diff options
Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/lib')
295 files changed, 0 insertions, 62677 deletions
diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/MCONFIG b/contrib/syslinux/syslinux-4.03/com32/lib/MCONFIG deleted file mode 100644 index 44278bd..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/MCONFIG +++ /dev/null @@ -1,80 +0,0 @@ -# -*- makefile -*- - -include $(topdir)/MCONFIG - -GCCOPT := $(call gcc_ok,-std=gnu99,) -GCCOPT += $(call gcc_ok,-m32,) -GCCOPT += $(call gcc_ok,-fno-stack-protector,) -GCCOPT += $(call gcc_ok,-fwrapv,) -GCCOPT += $(call gcc_ok,-freg-struct-return,) -GCCOPT += $(call gcc_ok,-fPIE,-fPIC) -GCCOPT += $(call gcc_ok,-fno-exceptions,) -GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,) -GCCOPT += $(call gcc_ok,-fno-strict-aliasing,) -GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0) -GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0) -GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) -GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) -GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,) - -INCLUDE = -I. -STRIP = strip --strip-all -R .comment -R .note - -# zlib and libpng configuration flags -LIBFLAGS = -DDYNAMIC_CRC_TABLE -DPNG_NO_CONSOLE_IO \ - -DPNG_NO_WRITE_SUPPORTED \ - -DPNG_NO_MNG_FEATURES \ - -DPNG_NO_READ_tIME -DPNG_NO_WRITE_tIME - -# We need some features in libpng which apparently aren't available in the -# fixed-point versions. It's OK, because we have to have a non-graphical -# fallback anyway, just use that on old machines... -# LIBFLAGS += -DPNG_NO_FLOATING_POINT_SUPPORTED - -REQFLAGS = $(GCCOPT) -g -mregparm=3 -DREGPARM=3 -D__COM32__ \ - -nostdinc -iwithprefix include -I. -I./sys -I../include -OPTFLAGS = -Os -march=i386 -falign-functions=0 -falign-jumps=0 \ - -falign-labels=0 -ffast-math -fomit-frame-pointer -WARNFLAGS = $(GCCWARN) -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Winline - -CFLAGS = $(OPTFLAGS) $(REQFLAGS) $(WARNFLAGS) $(LIBFLAGS) -LDFLAGS = -m elf32_i386 - -.SUFFIXES: .c .o .a .so .lo .i .S .s .ls .ss .lss - -% : %.c # Cancel default rule - -% : %.S - -.c.o: - $(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $< - -.c.i: - $(CC) $(MAKEDEPS) $(CFLAGS) -E -o $@ $< - -.c.s: - $(CC) $(MAKEDEPS) $(CFLAGS) -S -o $@ $< - -.S.o: - $(CC) $(MAKEDEPS) $(CFLAGS) -D__ASSEMBLY__ -c -o $@ $< - -.S.s: - $(CC) $(MAKEDEPS) $(CFLAGS) -D__ASSEMBLY__ -E -o $@ $< - -.S.lo: - $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -c -o $@ $< - -.S.ls: - $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -E -o $@ $< - -.s.o: - $(CC) $(MAKEDEPS) $(CFLAGS) -x assembler -c -o $@ $< - -.ls.lo: - $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -x assembler -c -o $@ $< - -.c.lo: - $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -c -o $@ $< - -.c.ls: - $(CC) $(MAKEDEPS) $(CFLAGS) $(SOFLAGS) -S -o $@ $< diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/Makefile b/contrib/syslinux/syslinux-4.03/com32/lib/Makefile deleted file mode 100644 index 2035df2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/Makefile +++ /dev/null @@ -1,187 +0,0 @@ -# -# ONLY INCLUDE MIT OR 2/3-BSD-LICENSED CODE IN THIS LIBRARY -# - -# Include configuration rules -NOGPL := 1 -topdir = ../.. -include MCONFIG - -LIBOBJS = \ - abort.o atexit.o atoi.o atol.o atoll.o calloc.o creat.o \ - ctypes.o errno.o fgetc.o fgets.o fopen.o fprintf.o fputc.o \ - fclose.o putchar.o setjmp.o \ - fputs.o fread2.o fread.o free.o fwrite2.o fwrite.o \ - getopt.o getopt_long.o \ - lrand48.o malloc.o stack.o memccpy.o memchr.o memcmp.o \ - memcpy.o mempcpy.o memmem.o memmove.o memset.o memswap.o \ - exit.o onexit.o \ - perror.o printf.o puts.o qsort.o realloc.o seed48.o snprintf.o \ - sprintf.o srand48.o sscanf.o stack.o strcasecmp.o strcat.o \ - strchr.o strcmp.o strcpy.o strdup.o strlen.o \ - strerror.o strnlen.o \ - strncasecmp.o strncat.o strncmp.o strncpy.o strndup.o \ - stpcpy.o stpncpy.o \ - strntoimax.o strntoumax.o strrchr.o strsep.o strspn.o strstr.o \ - strtoimax.o strtok.o strtol.o strtoll.o strtoul.o strtoull.o \ - strtoumax.o vfprintf.o vprintf.o vsnprintf.o vsprintf.o \ - asprintf.o vasprintf.o strlcpy.o strlcat.o \ - vsscanf.o zalloc.o \ - \ - lmalloc.o lstrdup.o \ - \ - dprintf.o vdprintf.o \ - \ - sys/readdir.o getcwd.o chdir.o fdopendir.o \ - \ - libgcc/__ashldi3.o libgcc/__udivdi3.o \ - libgcc/__negdi2.o libgcc/__ashrdi3.o libgcc/__lshrdi3.o \ - libgcc/__muldi3.o libgcc/__udivmoddi4.o libgcc/__umoddi3.o \ - libgcc/__divdi3.o libgcc/__moddi3.o \ - \ - sys/intcall.o sys/farcall.o sys/cfarcall.o sys/zeroregs.o \ - sys/entry.o sys/exit.o sys/argv.o sys/times.o sys/sleep.o \ - sys/fileinfo.o sys/opendev.o sys/read.o sys/write.o sys/ftell.o \ - sys/close.o sys/open.o sys/fileread.o sys/fileclose.o \ - sys/openmem.o \ - sys/isatty.o sys/fstat.o \ - \ - sys/zfile.o sys/zfopen.o \ - \ - sys/openconsole.o sys/line_input.o \ - sys/colortable.o sys/screensize.o \ - \ - sys/stdcon_read.o sys/stdcon_write.o sys/rawcon_read.o \ - sys/rawcon_write.o sys/err_read.o sys/err_write.o \ - sys/null_read.o sys/null_write.o sys/serial_write.o \ - \ - sys/xserial_write.o \ - \ - sys/ansi.o \ - \ - sys/libansi.o \ - \ - sys/gpxe.o \ - \ - sys/ansicon_write.o sys/ansiserial_write.o \ - \ - sys/vesacon_write.o sys/vesaserial_write.o \ - sys/vesa/initvesa.o sys/vesa/drawtxt.o sys/vesa/background.o \ - sys/vesa/alphatbl.o sys/vesa/screencpy.o sys/vesa/fmtpixel.o \ - sys/vesa/i915resolution.o \ - \ - pci/cfgtype.o pci/scan.o pci/bios.o \ - pci/readb.o pci/readw.o pci/readl.o \ - pci/writeb.o pci/writew.o pci/writel.o \ - \ - zlib/adler32.o zlib/compress.o zlib/crc32.o \ - zlib/uncompr.o zlib/deflate.o zlib/trees.o zlib/zutil.o \ - zlib/inflate.o zlib/infback.o zlib/inftrees.o zlib/inffast.o \ - \ - libpng/png.o libpng/pngset.o libpng/pngget.o libpng/pngrutil.o \ - libpng/pngtrans.o libpng/pngwutil.o libpng/pngread.o \ - libpng/pngrio.o libpng/pngwio.o libpng/pngwrite.o \ - libpng/pngrtran.o libpng/pngwtran.o libpng/pngmem.o \ - libpng/pngerror.o libpng/pngpread.o \ - \ - jpeg/tinyjpeg.o jpeg/jidctflt.o jpeg/decode1.o jpeg/decode3.o \ - jpeg/grey.o jpeg/yuv420p.o \ - jpeg/rgb24.o jpeg/bgr24.o \ - jpeg/rgba32.o jpeg/bgra32.o \ - \ - sys/x86_init_fpu.o math/pow.o math/strtod.o \ - \ - syslinux/idle.o syslinux/reboot.o \ - syslinux/features.o syslinux/config.o syslinux/serial.o \ - syslinux/ipappend.o syslinux/dsinfo.o syslinux/version.o \ - syslinux/keyboard.o \ - \ - syslinux/memscan.o \ - \ - syslinux/addlist.o syslinux/freelist.o syslinux/memmap.o \ - syslinux/movebits.o syslinux/shuffle.o syslinux/shuffle_pm.o \ - syslinux/shuffle_rm.o syslinux/zonelist.o \ - syslinux/dump_mmap.o syslinux/dump_movelist.o \ - \ - syslinux/run_default.o syslinux/run_command.o \ - syslinux/cleanup.o syslinux/localboot.o syslinux/runimage.o \ - \ - syslinux/loadfile.o syslinux/floadfile.o syslinux/zloadfile.o \ - \ - syslinux/load_linux.o syslinux/initramfs.o \ - syslinux/initramfs_file.o syslinux/initramfs_loadfile.o \ - syslinux/initramfs_archive.o \ - \ - syslinux/pxe_get_cached.o syslinux/pxe_get_nic.o \ - syslinux/pxe_dns.o \ - \ - syslinux/adv.o syslinux/advwrite.o syslinux/getadv.o \ - syslinux/setadv.o \ - \ - syslinux/video/fontquery.o syslinux/video/forcetext.o \ - syslinux/video/reportmode.o - -# These are the objects which are also imported into the core -LIBCOREOBJS = \ - memcpy.o mempcpy.o memset.o memcmp.o memmove.o \ - strlen.o stpcpy.o strcpy.o strcmp.o strlcpy.o strlcat.o \ - strchr.o strncmp.o strncpy.o \ - \ - snprintf.o sprintf.o vsnprintf.o \ - \ - dprintf.o vdprintf.o \ - \ - zalloc.o strdup.o \ - \ - sys/intcall.o sys/farcall.o sys/cfarcall.o sys/zeroregs.o \ - \ - libgcc/__ashldi3.o libgcc/__udivdi3.o \ - libgcc/__negdi2.o libgcc/__ashrdi3.o libgcc/__lshrdi3.o \ - libgcc/__muldi3.o libgcc/__udivmoddi4.o libgcc/__umoddi3.o \ - libgcc/__divdi3.o libgcc/__moddi3.o - -BINDIR = /usr/bin -LIBDIR = /usr/lib -DATADIR = /usr/share -AUXDIR = $(DATADIR)/syslinux -INCDIR = /usr/include -COM32DIR = $(AUXDIR)/com32 - -all: libcom32.a libcomcore.a - -libcom32.a : $(LIBOBJS) - rm -f $@ - $(AR) cq $@ $^ - $(RANLIB) $@ - -libcomcore.a : $(LIBCOREOBJS) - rm -f $@ - $(AR) cq $@ $^ - $(RANLIB) $@ - -tidy dist clean: - rm -f sys/vesa/alphatbl.c - find . \( -name \*.o -o -name \*.a -o -name .\*.d -o -name \*.tmp \) -print0 | \ - xargs -0r rm -f - -spotless: clean - rm -f *.a - rm -f *~ \#* */*~ */\#* - -install: all - mkdir -m 755 -p $(INSTALLROOT)$(COM32DIR) - install -m 644 libcom32.a com32.ld $(INSTALLROOT)$(COM32DIR) - -rm -rf $(INSTALLROOT)$(COM32DIR)/include - cp -r ../include $(INSTALLROOT)$(COM32DIR) - -# These files are performance critical, and doesn't compile well with -Os -sys/vesa/drawtxt.o: sys/vesa/drawtxt.c - $(CC) $(MAKEDEPS) $(CFLAGS) -O3 -c -o $@ $< - -sys/vesa/alphatbl.c: sys/vesa/alphatbl.pl - $(PERL) $< > $@ - -jpeg/jidctflt.o: jpeg/jidctflt.c - $(CC) $(MAKEDEPS) $(CFLAGS) -O3 -c -o $@ $< - --include .*.d */.*.d */*/.*.d diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/abort.c b/contrib/syslinux/syslinux-4.03/com32/lib/abort.c deleted file mode 100644 index b848be1..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/abort.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * abort.c - */ - -#include <stdlib.h> -#include <unistd.h> - -void abort(void) -{ - _exit(255); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/asprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/asprintf.c deleted file mode 100644 index ef5b4b2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/asprintf.c +++ /dev/null @@ -1,30 +0,0 @@ -/* - * asprintf.c - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdarg.h> - -int asprintf(char **bufp, const char *format, ...) -{ - va_list ap, ap1; - int rv; - int bytes; - char *p; - - va_start(ap, format); - va_copy(ap1, ap); - - bytes = vsnprintf(NULL, 0, format, ap1) + 1; - va_end(ap1); - - *bufp = p = malloc(bytes); - if (!p) - return -1; - - rv = vsnprintf(p, bytes, format, ap); - va_end(ap); - - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atexit.c b/contrib/syslinux/syslinux-4.03/com32/lib/atexit.c deleted file mode 100644 index 804790e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atexit.c +++ /dev/null @@ -1,10 +0,0 @@ -/* - * atexit.c - */ - -#include <stdlib.h> - -int atexit(void (*fctn) (void)) -{ - return on_exit((void (*)(int, void *))fctn, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atexit.h b/contrib/syslinux/syslinux-4.03/com32/lib/atexit.h deleted file mode 100644 index 917beb5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atexit.h +++ /dev/null @@ -1,16 +0,0 @@ -/* - * atexit.h - * - * atexit()/on_exit() internal definitions - */ - -#ifndef ATEXIT_H -#define ATEXIT_H - -struct atexit { - void (*fctn) (int, void *); - void *arg; /* on_exit() parameter */ - struct atexit *next; -}; - -#endif /* ATEXIT_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atoi.c b/contrib/syslinux/syslinux-4.03/com32/lib/atoi.c deleted file mode 100644 index a6ec0bf..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atoi.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE int -#define NAME atoi -#include "atox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atol.c b/contrib/syslinux/syslinux-4.03/com32/lib/atol.c deleted file mode 100644 index e65484e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atol.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE long -#define NAME atol -#include "atox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atoll.c b/contrib/syslinux/syslinux-4.03/com32/lib/atoll.c deleted file mode 100644 index 25df79e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atoll.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE long long -#define NAME atoll -#include "atox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/atox.c b/contrib/syslinux/syslinux-4.03/com32/lib/atox.c deleted file mode 100644 index e9917cd..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/atox.c +++ /dev/null @@ -1,14 +0,0 @@ -/* - * atox.c - * - * atoi(), atol(), atoll() - */ - -#include <inttypes.h> -#include <stdlib.h> -#include <stdio.h> - -TYPE NAME(const char *nptr) -{ - return (TYPE) strntoumax(nptr, (char **)NULL, 10, ~(size_t) 0); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/calloc.c b/contrib/syslinux/syslinux-4.03/com32/lib/calloc.c deleted file mode 100644 index 04b3c5e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/calloc.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * calloc.c - */ - -#include <stdlib.h> -#include <string.h> - -/* FIXME: This should look for multiplication overflow */ - -void *calloc(size_t nmemb, size_t size) -{ - return zalloc(size * nmemb); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/chdir.c b/contrib/syslinux/syslinux-4.03/com32/lib/chdir.c deleted file mode 100644 index 00670e3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/chdir.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * chdir.c - */ - -#include <dirent.h> -#include <stdio.h> -#include <errno.h> - -#include <com32.h> -#include <syslinux/pmapi.h> - -int chdir(const char *path) -{ - return __com32.cs_pm->chdir(path); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/com32.ld b/contrib/syslinux/syslinux-4.03/com32/lib/com32.ld deleted file mode 100644 index 37ee46c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/com32.ld +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Linker script for COM32 binaries using libcom32 - */ - -/* Script for -z combreloc: combine and sort reloc sections */ -OUTPUT_FORMAT("elf32-i386", "elf32-i386", - "elf32-i386") -OUTPUT_ARCH(i386) -EXTERN(_start) -ENTRY(_start) -SECTIONS -{ - /* Read-only sections, merged into text segment: */ - . = 0; - PROVIDE (__executable_start = .); - PROVIDE (_stext = .); - - .init : - { - KEEP (*(.init)) - } =0x90909090 - .text : - { - *(.text .stub .text.* .gnu.linkonce.t.*) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - } =0x90909090 - .fini : - { - KEEP (*(.fini)) - } =0x90909090 - PROVIDE (_etext = .); - - __rodata_start = .; - .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } - .rodata1 : { *(.rodata1) } - __rodata_end = .; - - /* Ensure the __preinit_array_start label is properly aligned. We - could instead move the label definition inside the section, but - the linker would then create the section even if it turns out to - be empty, which isn't pretty. */ - . = ALIGN(4); - .preinit_array : { - PROVIDE (__preinit_array_start = .); - *(.preinit_array) - PROVIDE (__preinit_array_end = .); - } - .init_array : { - PROVIDE (__init_array_start = .); - *(.init_array) - PROVIDE (__init_array_end = .); - } - .fini_array : { - PROVIDE (__fini_array_start = .); - *(.fini_array) - PROVIDE (__fini_array_end = .); - } - .ctors : { - PROVIDE (__ctors_start = .); - KEEP (*(SORT(.ctors.*))) - KEEP (*(.ctors)) - PROVIDE (__ctors_end = .); - } - .dtors : { - PROVIDE (__dtors_start = .); - KEEP (*(SORT(.dtors.*))) - KEEP (*(.dtors)) - PROVIDE (__dtors_end = .); - } - - .got : { - PROVIDE (__got_start = .); - KEEP (*(.got.plt)) - KEEP (*(.got)) - PROVIDE (__got_end = .); - } - - /* Adjust the address for the data segment. Avoid mixing code and - data within same 128-byte chunk. */ - . = ALIGN(128); - - .data : - { - _sdata = .; - KEEP(*(.data .data.* .gnu.linkonce.d.*)) - SORT(CONSTRUCTORS) - *(.data1) - . = ALIGN(4); - _edata = .; - } - - __bss_start = .; - .bss : - { - *(.dynbss) - *(.bss .bss.* .gnu.linkonce.b.*) - *(COMMON) - /* Align here to ensure that the .bss section occupies space up to - _end. Align after .bss to ensure correct alignment even if the - .bss section disappears because there are no input sections. */ - . = ALIGN(4); - } - . = ALIGN(4); - _end = .; - - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } - /* DWARF debug sections. - Symbols in the DWARF debugging sections are relative to the beginning - of the section so we begin them at 0. */ - /* DWARF 1 */ - .debug 0 : { *(.debug) } - .line 0 : { *(.line) } - /* GNU DWARF 1 extensions */ - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_sfnames 0 : { *(.debug_sfnames) } - /* DWARF 1.1 and DWARF 2 */ - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - /* DWARF 2 */ - .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } - .debug_abbrev 0 : { *(.debug_abbrev) } - .debug_line 0 : { *(.debug_line) } - .debug_frame 0 : { *(.debug_frame) } - .debug_str 0 : { *(.debug_str) } - .debug_loc 0 : { *(.debug_loc) } - .debug_macinfo 0 : { *(.debug_macinfo) } - /* SGI/MIPS DWARF 2 extensions */ - .debug_weaknames 0 : { *(.debug_weaknames) } - .debug_funcnames 0 : { *(.debug_funcnames) } - .debug_typenames 0 : { *(.debug_typenames) } - .debug_varnames 0 : { *(.debug_varnames) } - /DISCARD/ : { *(.note.GNU-stack) } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/creat.c b/contrib/syslinux/syslinux-4.03/com32/lib/creat.c deleted file mode 100644 index 3b4dc61..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/creat.c +++ /dev/null @@ -1,12 +0,0 @@ -/* - * creat.c - */ - -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - -int creat(const char *pathname, mode_t mode) -{ - return open(pathname, O_CREAT | O_WRONLY | O_TRUNC, mode); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/ctypes.c b/contrib/syslinux/syslinux-4.03/com32/lib/ctypes.c deleted file mode 100644 index 50125a5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/ctypes.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - * ctypes.c - * - * This is the array that defines <ctype.h> classes. - * This assumes ISO 8859-1. - */ - -#include <ctype.h> - -const unsigned char __ctypes[257] = { - 0, /* EOF */ - - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl | __ctype_space, /* BS */ - __ctype_cntrl | __ctype_space, /* TAB */ - __ctype_cntrl | __ctype_space, /* LF */ - __ctype_cntrl | __ctype_space, /* VT */ - __ctype_cntrl | __ctype_space, /* FF */ - __ctype_cntrl | __ctype_space, /* CR */ - __ctype_cntrl, /* control character */ - - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - - __ctype_print | __ctype_space, /* space */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_digit | __ctype_xdigit, /* digit */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper | __ctype_xdigit, /* A-F */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_upper, /* G-Z */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower | __ctype_xdigit, /* a-f */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_lower, /* g-z */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_cntrl, /* control character */ - - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - __ctype_cntrl, /* control character */ - - __ctype_print | __ctype_space, /* NBSP */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_punct, /* punctuation */ - - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_upper, /* upper accented */ - __ctype_print | __ctype_lower, /* lower accented */ - - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_punct, /* punctuation */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ - __ctype_print | __ctype_lower, /* lower accented */ -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/dprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/dprintf.c deleted file mode 100644 index 900c0a4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/dprintf.c +++ /dev/null @@ -1,19 +0,0 @@ -/* - * dprintf.c - */ - -#include <stdio.h> -#include <stdarg.h> - -#undef DEBUG -#define DEBUG 1 -#include <dprintf.h> - -void dprintf(const char *format, ...) -{ - va_list ap; - - va_start(ap, format); - vdprintf(format, ap); - va_end(ap); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/errno.c b/contrib/syslinux/syslinux-4.03/com32/lib/errno.c deleted file mode 100644 index f280e30..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/errno.c +++ /dev/null @@ -1,7 +0,0 @@ -/* - * errno.c - * - */ -#include <errno.h> - -int errno; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/exit.c b/contrib/syslinux/syslinux-4.03/com32/lib/exit.c deleted file mode 100644 index ccd6f1e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/exit.c +++ /dev/null @@ -1,41 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * exit.c - * - * The regular exit - */ - -#include <stdlib.h> - -extern __noreturn(*__exit_handler) (int); - -__noreturn exit(int rv) -{ - __exit_handler(rv); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fclose.c b/contrib/syslinux/syslinux-4.03/com32/lib/fclose.c deleted file mode 100644 index f59fcc0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fclose.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * fclose.c - */ - -#include <stdio.h> -#include <unistd.h> - -int fclose(FILE * __f) -{ - return close(fileno(__f)); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fdopendir.c b/contrib/syslinux/syslinux-4.03/com32/lib/fdopendir.c deleted file mode 100644 index 4fc3138..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fdopendir.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * fdopendir.c - */ - -#include <dirent.h> -#include <stdio.h> -#include <errno.h> - -DIR *fdopendir(int __fd) -{ - (void)__fd; - - errno = ENOSYS; - return NULL; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fgetc.c b/contrib/syslinux/syslinux-4.03/com32/lib/fgetc.c deleted file mode 100644 index b48e147..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fgetc.c +++ /dev/null @@ -1,19 +0,0 @@ -/* - * fgetc.c - * - * Extremely slow fgetc implementation, using _fread(). If people - * actually need character-oriented input to be fast, we may actually - * have to implement buffering. Sigh. - */ - -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <errno.h> - -int fgetc(FILE * f) -{ - unsigned char ch; - - return (_fread(&ch, 1, f) == 1) ? (int)ch : EOF; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fgets.c b/contrib/syslinux/syslinux-4.03/com32/lib/fgets.c deleted file mode 100644 index 7bc1519..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fgets.c +++ /dev/null @@ -1,31 +0,0 @@ -/* - * fgets.c - * - * This will be very slow due to the implementation of getc(), - * but we can't afford to drain characters we don't need from - * the input. - */ - -#include <stdio.h> - -char *fgets(char *s, int n, FILE * f) -{ - int ch; - char *p = s; - - while (n > 1) { - ch = getc(f); - if (ch == EOF) { - *p = '\0'; - return (p == s) ? NULL : s; - } - *p++ = ch; - if (ch == '\n') - break; - n--; - } - if (n) - *p = '\0'; - - return s; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fopen.c b/contrib/syslinux/syslinux-4.03/com32/lib/fopen.c deleted file mode 100644 index c7c122c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fopen.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * fopen.c - */ - -#include <stdio.h> -#include <unistd.h> -#include <fcntl.h> - -FILE *fopen(const char *file, const char *mode) -{ - int flags = O_RDONLY; - int plus = 0; - int fd; - - while (*mode) { - switch (*mode) { - case 'r': - flags = O_RDONLY; - break; - case 'w': - flags = O_WRONLY | O_CREAT | O_TRUNC; - break; - case 'a': - flags = O_WRONLY | O_CREAT | O_APPEND; - break; - case '+': - plus = 1; - break; - } - mode++; - } - - if (plus) { - flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; - } - - fd = open(file, flags, 0666); - - if (fd < 0) - return NULL; - else - return fdopen(fd, mode); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fopendev.c b/contrib/syslinux/syslinux-4.03/com32/lib/fopendev.c deleted file mode 100644 index cd2f00f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fopendev.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * fopendev.c - */ - -#include <stdio.h> -#include <unistd.h> -#include <fcntl.h> - -FILE *fopendev(const struct dev_info * dev, const char *mode) -{ - int flags = O_RDONLY; - int plus = 0; - int fd; - - while (*mode) { - switch (*mode) { - case 'r': - flags = O_RDONLY; - break; - case 'w': - flags = O_WRONLY | O_CREAT | O_TRUNC; - break; - case 'a': - flags = O_WRONLY | O_CREAT | O_APPEND; - break; - case '+': - plus = 1; - break; - } - mode++; - } - - if (plus) { - flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; - } - - fd = opendev(file, flags); - - if (fd < 0) - return NULL; - else - return fdopen(fd, mode); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/fprintf.c deleted file mode 100644 index 5eb8e07..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fprintf.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * fprintf.c - */ - -#include <stdio.h> -#include <stdarg.h> - -int fprintf(FILE * file, const char *format, ...) -{ - va_list ap; - int rv; - - va_start(ap, format); - rv = vfprintf(file, format, ap); - va_end(ap); - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fputc.c b/contrib/syslinux/syslinux-4.03/com32/lib/fputc.c deleted file mode 100644 index 7a1bf0b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fputc.c +++ /dev/null @@ -1,14 +0,0 @@ -/* - * fputc.c - * - * gcc "printf decompilation" expects this to exist... - */ - -#include <stdio.h> - -int fputc(int c, FILE * f) -{ - unsigned char ch = c; - - return _fwrite(&ch, 1, f) == 1 ? ch : EOF; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fputs.c b/contrib/syslinux/syslinux-4.03/com32/lib/fputs.c deleted file mode 100644 index 84f0c89..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fputs.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * fputs.c - * - * This isn't quite fputs() in the stdio sense, since we don't - * have stdio, but it takes a file descriptor argument instead - * of the FILE *. - */ - -#include <stdio.h> -#include <string.h> - -int fputs(const char *s, FILE * file) -{ - return _fwrite(s, strlen(s), file); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fread.c b/contrib/syslinux/syslinux-4.03/com32/lib/fread.c deleted file mode 100644 index 94e9cff..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fread.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * fread.c - */ - -#include <errno.h> -#include <unistd.h> -#include <stdio.h> - -size_t _fread(void *buf, size_t count, FILE * f) -{ - size_t bytes = 0; - ssize_t rv; - char *p = buf; - - while (count) { - rv = read(fileno(f), p, count); - if (rv == -1) { - if (errno == EINTR || errno == EAGAIN) - continue; - else - break; - } else if (rv == 0) { - break; - } - - p += rv; - bytes += rv; - count -= rv; - } - - return bytes; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fread2.c b/contrib/syslinux/syslinux-4.03/com32/lib/fread2.c deleted file mode 100644 index 0062040..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fread2.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * fread2.c - * - * The actual fread() function as a non-inline - */ - -#define __NO_FREAD_FWRITE_INLINES -#include <stdio.h> - -size_t fread(void *ptr, size_t size, size_t nmemb, FILE * f) -{ - return _fread(ptr, size * nmemb, f) / size; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/free.c b/contrib/syslinux/syslinux-4.03/com32/lib/free.c deleted file mode 100644 index be23865..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/free.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * free.c - * - * Very simple linked-list based malloc()/free(). - */ - -#include <stdlib.h> -#include "malloc.h" - -static struct free_arena_header *__free_block(struct free_arena_header *ah) -{ - struct free_arena_header *pah, *nah; - - pah = ah->a.prev; - nah = ah->a.next; - if (pah->a.type == ARENA_TYPE_FREE && - (char *)pah + pah->a.size == (char *)ah) { - /* Coalesce into the previous block */ - pah->a.size += ah->a.size; - pah->a.next = nah; - nah->a.prev = pah; - -#ifdef DEBUG_MALLOC - ah->a.type = ARENA_TYPE_DEAD; -#endif - - ah = pah; - pah = ah->a.prev; - } else { - /* Need to add this block to the free chain */ - ah->a.type = ARENA_TYPE_FREE; - - ah->next_free = __malloc_head.next_free; - ah->prev_free = &__malloc_head; - __malloc_head.next_free = ah; - ah->next_free->prev_free = ah; - } - - /* In either of the previous cases, we might be able to merge - with the subsequent block... */ - if (nah->a.type == ARENA_TYPE_FREE && - (char *)ah + ah->a.size == (char *)nah) { - ah->a.size += nah->a.size; - - /* Remove the old block from the chains */ - nah->next_free->prev_free = nah->prev_free; - nah->prev_free->next_free = nah->next_free; - ah->a.next = nah->a.next; - nah->a.next->a.prev = ah; - -#ifdef DEBUG_MALLOC - nah->a.type = ARENA_TYPE_DEAD; -#endif - } - - /* Return the block that contains the called block */ - return ah; -} - -/* - * This is used to insert a block which is not previously on the - * free list. Only the a.size field of the arena header is assumed - * to be valid. - */ -void __inject_free_block(struct free_arena_header *ah) -{ - struct free_arena_header *nah; - size_t a_end = (size_t) ah + ah->a.size; - size_t n_end; - - for (nah = __malloc_head.a.next; nah->a.type != ARENA_TYPE_HEAD; - nah = nah->a.next) { - n_end = (size_t) nah + nah->a.size; - - /* Is nah entirely beyond this block? */ - if ((size_t) nah >= a_end) - break; - - /* Is this block entirely beyond nah? */ - if ((size_t) ah >= n_end) - continue; - - /* Otherwise we have some sort of overlap - reject this block */ - return; - } - - /* Now, nah should point to the successor block */ - ah->a.next = nah; - ah->a.prev = nah->a.prev; - nah->a.prev = ah; - ah->a.prev->a.next = ah; - - __free_block(ah); -} - -void free(void *ptr) -{ - struct free_arena_header *ah; - - if (!ptr) - return; - - ah = (struct free_arena_header *) - ((struct arena_header *)ptr - 1); - -#ifdef DEBUG_MALLOC - assert(ah->a.type == ARENA_TYPE_USED); -#endif - - __free_block(ah); - - /* Here we could insert code to return memory to the system. */ -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fwrite.c b/contrib/syslinux/syslinux-4.03/com32/lib/fwrite.c deleted file mode 100644 index b5c1d5d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fwrite.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * fwrite.c - */ - -#include <errno.h> -#include <unistd.h> -#include <stdio.h> - -size_t _fwrite(const void *buf, size_t count, FILE * f) -{ - size_t bytes = 0; - ssize_t rv; - const char *p = buf; - - while (count) { - rv = write(fileno(f), p, count); - if (rv == -1) { - if (errno == EINTR || errno == EAGAIN) - continue; - else - break; - } else if (rv == 0) { - break; - } - - p += rv; - bytes += rv; - count -= rv; - } - - return bytes; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/fwrite2.c b/contrib/syslinux/syslinux-4.03/com32/lib/fwrite2.c deleted file mode 100644 index 4d706e1..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/fwrite2.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * fwrite2.c - * - * The actual fwrite() function as a non-inline - */ - -#define __NO_FREAD_FWRITE_INLINES -#include <stdio.h> - -size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE * f) -{ - return _fwrite(ptr, size * nmemb, f) / size; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/getcwd.c b/contrib/syslinux/syslinux-4.03/com32/lib/getcwd.c deleted file mode 100644 index 5ce62ec..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/getcwd.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * getcwd.c - */ - -#include <com32.h> -#include <syslinux/pmapi.h> - -char *getcwd(char *buf, size_t size) -{ - return __com32.cs_pm->getcwd(buf, size); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/getopt.c b/contrib/syslinux/syslinux-4.03/com32/lib/getopt.c deleted file mode 100644 index 806735d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/getopt.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * getopt.c - * - * Simple POSIX getopt(), no GNU extensions... - */ - -#include <stdint.h> -#include <unistd.h> -#include <string.h> - -char *optarg; -int optind, opterr, optopt; -static struct getopt_private_state { - const char *optptr; - const char *last_optstring; - char *const *last_argv; -} pvt; - -int getopt(int argc, char *const *argv, const char *optstring) -{ - const char *carg; - const char *osptr; - int opt; - - /* getopt() relies on a number of different global state - variables, which can make this really confusing if there is - more than one use of getopt() in the same program. This - attempts to detect that situation by detecting if the - "optstring" or "argv" argument have changed since last time - we were called; if so, reinitialize the query state. */ - - if (optstring != pvt.last_optstring || argv != pvt.last_argv || - optind < 1 || optind > argc) { - /* optind doesn't match the current query */ - pvt.last_optstring = optstring; - pvt.last_argv = argv; - optind = 1; - pvt.optptr = NULL; - } - - carg = argv[optind]; - - /* First, eliminate all non-option cases */ - - if (!carg || carg[0] != '-' || !carg[1]) { - return -1; - } - - if (carg[1] == '-' && !carg[2]) { - optind++; - return -1; - } - - if ((uintptr_t) (pvt.optptr - carg) > (uintptr_t) strlen(carg)) { - /* Someone frobbed optind, change to new opt. */ - pvt.optptr = carg + 1; - } - - opt = *pvt.optptr++; - - if (opt != ':' && (osptr = strchr(optstring, opt))) { - if (osptr[1] == ':') { - if (*pvt.optptr) { - /* Argument-taking option with attached - argument */ - optarg = (char *)pvt.optptr; - optind++; - } else { - /* Argument-taking option with non-attached - argument */ - if (argv[optind + 1]) { - optarg = (char *)argv[optind+1]; - optind += 2; - } else { - /* Missing argument */ - optind++; - return (optstring[0] == ':') - ? ':' : '?'; - } - } - return opt; - } else { - /* Non-argument-taking option */ - /* pvt.optptr will remember the exact position to - resume at */ - if (!*pvt.optptr) - optind++; - return opt; - } - } else { - /* Unknown option */ - optopt = opt; - if (!*pvt.optptr) - optind++; - return '?'; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/getopt_long.c b/contrib/syslinux/syslinux-4.03/com32/lib/getopt_long.c deleted file mode 100644 index e3d064b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/getopt_long.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * getopt.c - * - * getopt_long(), or at least a common subset thereof: - * - * - Option reordering is not supported - * - -W foo is not supported - * - First optstring character "-" not supported. - */ - -#include <stdint.h> -#include <unistd.h> -#include <string.h> -#include <getopt.h> - -char *optarg; -int optind, opterr, optopt; -static struct getopt_private_state { - const char *optptr; - const char *last_optstring; - char *const *last_argv; -} pvt; - -static inline const char *option_matches(const char *arg_str, - const char *opt_name) -{ - while (*arg_str != '\0' && *arg_str != '=') { - if (*arg_str++ != *opt_name++) - return NULL; - } - - if (*opt_name) - return NULL; - - return arg_str; -} - -int getopt_long(int argc, char *const *argv, const char *optstring, - const struct option *longopts, int *longindex) -{ - const char *carg; - const char *osptr; - int opt; - - /* getopt() relies on a number of different global state - variables, which can make this really confusing if there is - more than one use of getopt() in the same program. This - attempts to detect that situation by detecting if the - "optstring" or "argv" argument have changed since last time - we were called; if so, reinitialize the query state. */ - - if (optstring != pvt.last_optstring || argv != pvt.last_argv || - optind < 1 || optind > argc) { - /* optind doesn't match the current query */ - pvt.last_optstring = optstring; - pvt.last_argv = argv; - optind = 1; - pvt.optptr = NULL; - } - - carg = argv[optind]; - - /* First, eliminate all non-option cases */ - - if (!carg || carg[0] != '-' || !carg[1]) - return -1; - - if (carg[1] == '-') { - const struct option *lo; - const char *opt_end = NULL; - - optind++; - - /* Either it's a long option, or it's -- */ - if (!carg[2]) { - /* It's -- */ - return -1; - } - - for (lo = longopts; lo->name; lo++) { - if ((opt_end = option_matches(carg+2, lo->name))) - break; - } - if (!opt_end) - return '?'; - - if (longindex) - *longindex = lo-longopts; - - if (*opt_end == '=') { - if (lo->has_arg) - optarg = (char *)opt_end+1; - else - return '?'; - } else if (lo->has_arg == 1) { - if (!(optarg = argv[optind])) - return '?'; - optind++; - } - - if (lo->flag) { - *lo->flag = lo->val; - return 0; - } else { - return lo->val; - } - } - - if ((uintptr_t) (pvt.optptr - carg) > (uintptr_t) strlen(carg)) { - /* Someone frobbed optind, change to new opt. */ - pvt.optptr = carg + 1; - } - - opt = *pvt.optptr++; - - if (opt != ':' && (osptr = strchr(optstring, opt))) { - if (osptr[1] == ':') { - if (*pvt.optptr) { - /* Argument-taking option with attached - argument */ - optarg = (char *)pvt.optptr; - optind++; - } else { - /* Argument-taking option with non-attached - argument */ - if (argv[optind + 1]) { - optarg = (char *)argv[optind+1]; - optind += 2; - } else { - /* Missing argument */ - optind++; - return (optstring[0] == ':') - ? ':' : '?'; - } - } - return opt; - } else { - /* Non-argument-taking option */ - /* pvt.optptr will remember the exact position to - resume at */ - if (!*pvt.optptr) - optind++; - return opt; - } - } else { - /* Unknown option */ - optopt = opt; - if (!*pvt.optptr) - optind++; - return '?'; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/init.h b/contrib/syslinux/syslinux-4.03/com32/lib/init.h deleted file mode 100644 index 2d98342..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/init.h +++ /dev/null @@ -1,15 +0,0 @@ -/* - * init.h - * - * Magic to set up initializers - */ - -#ifndef _INIT_H -#define _INIT_H 1 - -#include <inttypes.h> - -#define COM32_INIT(x) static const void * const __COM32_INIT \ - __attribute__((section(".init_array"),unused)) = (const void * const)&x - -#endif /* _INIT_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/README b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/README deleted file mode 100644 index 6adeef4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/README +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgr24.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgr24.c deleted file mode 100644 index 855b855..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgr24.c +++ /dev/null @@ -1,373 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ -static unsigned char clamp(int i) -{ - if (i<0) - return 0; - else if (i>255) - return 255; - else - return i; -} - -/** - * YCrCb -> BGR24 (1x1) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_BGR24_1x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 8*3; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - - Y++; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/* - * YCrCb -> BGR24 (2x1) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_BGR24_2x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 16*3; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - - if (j > 1) { - y = Y[1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - } - - Y += 2; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/* - * YCrCb -> BGR24 (1x2) - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void YCrCB_to_BGR24_1x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 8*3; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0 ; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - - if (i > 1) { - y = Y[8] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - } - - Y++; - } - Y += 8; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/* - * YCrCb -> BGR24 (2x2) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void YCrCB_to_BGR24_2x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 16*3; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - - if (j > 1) { - y = Y[1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - } - - if (i > 1) { - y = Y[16+0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - - if (j > 1) { - y = Y[16+1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - } - } - - Y += 2; - } - Y += 16; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -static int initialize_bgr24(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width * 3; - if (!priv->components[0]) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3; - bytes_per_mcu[0] = 3*8; - - return !priv->components[0]; -} - -static const struct tinyjpeg_colorspace format_bgr24 = - { - { - YCrCB_to_BGR24_1x1, - YCrCB_to_BGR24_1x2, - YCrCB_to_BGR24_2x1, - YCrCB_to_BGR24_2x2, - }, - tinyjpeg_decode_mcu_3comp_table, - initialize_bgr24 - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_BGR24 = &format_bgr24; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgra32.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgra32.c deleted file mode 100644 index 9a1ab30..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/bgra32.c +++ /dev/null @@ -1,390 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ -static unsigned char clamp(int i) -{ - if (i<0) - return 0; - else if (i>255) - return 255; - else - return i; -} - -/** - * YCrCb -> BGRA32 (1x1) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_BGRA32_1x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 8*4; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - - Y++; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/* - * YCrCb -> BGRA32 (2x1) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_BGRA32_2x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 16*4; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j -= 2) { - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - - if (j > 1) { - y = Y[1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - } - - Y += 2; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/* - * YCrCb -> BGRA32 (1x2) - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void YCrCB_to_BGRA32_1x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 8*4; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - - if (i > 1) { - y = Y[8] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - a = 255; - *p2++ = a; - } - - Y++; - } - Y += 8; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/* - * YCrCb -> BGRA32 (2x2) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void YCrCB_to_BGRA32_2x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 16*4; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - - if (j > 1) { - y = Y[1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - a = 255; - *p++ = a; - } - - if (i > 1) { - y = Y[16+0] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - a = 255; - *p2++ = a; - - if (j > 1) { - y = Y[16+1] << SCALEBITS; - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - a = 255; - *p2++ = a; - } - } - - Y += 2; - } - Y += 16; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -static int initialize_bgra32(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width * 4; - if (!priv->components[0]) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3; - bytes_per_mcu[0] = 4*8; - - return !priv->components[0]; -} - -static const struct tinyjpeg_colorspace format_bgra32 = - { - { - YCrCB_to_BGRA32_1x1, - YCrCB_to_BGRA32_1x2, - YCrCB_to_BGRA32_2x1, - YCrCB_to_BGRA32_2x2, - }, - tinyjpeg_decode_mcu_3comp_table, - initialize_bgra32 - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_BGRA32 = &format_bgra32; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode1.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode1.c deleted file mode 100644 index 554f7f1..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode1.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/* - * Decode a 1x1 directly in 1 color - */ -static void decode_MCU_1x1_1plane(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 8); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - IDCT(&priv->component_infos[cCb], priv->Cb, 8); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); - IDCT(&priv->component_infos[cCr], priv->Cr, 8); -} - - -/* - * Decode a 2x1 - * .-------. - * | 1 | 2 | - * `-------' - */ -static void decode_MCU_2x1_1plane(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+8, 16); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); -} - - -/* - * Decode a 2x2 directly in GREY format (8bits) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void decode_MCU_2x2_1plane(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+8, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64*2, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64*2+8, 16); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); -} - -/* - * Decode a 1x2 mcu - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void decode_MCU_1x2_1plane(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 8); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64, 8); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); -} - -const decode_MCU_fct tinyjpeg_decode_mcu_1comp_table[4] = { - decode_MCU_1x1_1plane, - decode_MCU_1x2_1plane, - decode_MCU_2x1_1plane, - decode_MCU_2x2_1plane, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode3.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode3.c deleted file mode 100644 index 2f79ec9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/decode3.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/* - * Decode all the 3 components for 1x1 - */ -static void decode_MCU_1x1_3planes(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 8); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - IDCT(&priv->component_infos[cCb], priv->Cb, 8); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); - IDCT(&priv->component_infos[cCr], priv->Cr, 8); -} - -/* - * Decode a 2x1 - * .-------. - * | 1 | 2 | - * `-------' - */ -static void decode_MCU_2x1_3planes(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+8, 16); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - IDCT(&priv->component_infos[cCb], priv->Cb, 8); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); - IDCT(&priv->component_infos[cCr], priv->Cr, 8); -} - -/* - * Decode a 2x2 - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void decode_MCU_2x2_3planes(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+8, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64*2, 16); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64*2+8, 16); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - IDCT(&priv->component_infos[cCb], priv->Cb, 8); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); - IDCT(&priv->component_infos[cCr], priv->Cr, 8); -} - -/* - * Decode a 1x2 mcu - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void decode_MCU_1x2_3planes(struct jdec_private *priv) -{ - // Y - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y, 8); - tinyjpeg_process_Huffman_data_unit(priv, cY); - IDCT(&priv->component_infos[cY], priv->Y+64, 8); - - // Cb - tinyjpeg_process_Huffman_data_unit(priv, cCb); - IDCT(&priv->component_infos[cCb], priv->Cb, 8); - - // Cr - tinyjpeg_process_Huffman_data_unit(priv, cCr); - IDCT(&priv->component_infos[cCr], priv->Cr, 8); -} - -const decode_MCU_fct tinyjpeg_decode_mcu_3comp_table[4] = { - decode_MCU_1x1_3planes, - decode_MCU_1x2_3planes, - decode_MCU_2x1_3planes, - decode_MCU_2x2_3planes, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/grey.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/grey.c deleted file mode 100644 index 6710ede..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/grey.c +++ /dev/null @@ -1,117 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/** - * YCrCb -> Grey (1x1, 1x2) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_Grey_1xN(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *y; - unsigned char *p; - unsigned int i; - int offset_to_next_row; - - p = priv->plane[0]; - y = priv->Y; - offset_to_next_row = priv->bytes_per_row[0]; - - for (i = sy; i > 0; i--) { - memcpy(p, y, sx); - y += 8; - p += offset_to_next_row; - } -} - -/** - * YCrCb -> Grey (2x1, 2x2) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_Grey_2xN(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *y; - unsigned char *p; - unsigned int i; - int offset_to_next_row; - - p = priv->plane[0]; - y = priv->Y; - offset_to_next_row = priv->bytes_per_row[0]; - - for (i = sy; i > 0; i--) { - memcpy(p, y, sx); - y += 16; - p += offset_to_next_row; - } -} - -static int initialize_grey(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width; - if (!priv->components[0]) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3; - bytes_per_mcu[0] = 8; - - return !priv->components[0]; -} - -static const struct tinyjpeg_colorspace format_grey = - { - { - YCrCB_to_Grey_1xN, - YCrCB_to_Grey_1xN, - YCrCB_to_Grey_2xN, - YCrCB_to_Grey_2xN, - }, - tinyjpeg_decode_mcu_1comp_table, - initialize_grey - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_GREY = &format_grey; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/jidctflt.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/jidctflt.c deleted file mode 100644 index 6f0df77..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/jidctflt.c +++ /dev/null @@ -1,285 +0,0 @@ -/* - * jidctflt.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * - * The authors make NO WARRANTY or representation, either express or implied, - * with respect to this software, its quality, accuracy, merchantability, or - * fitness for a particular purpose. This software is provided "AS IS", and you, - * its user, assume the entire risk as to its quality and accuracy. - * - * This software is copyright (C) 1991-1998, Thomas G. Lane. - * All Rights Reserved except as specified below. - * - * Permission is hereby granted to use, copy, modify, and distribute this - * software (or portions thereof) for any purpose, without fee, subject to these - * conditions: - * (1) If any part of the source code for this software is distributed, then this - * README file must be included, with this copyright and no-warranty notice - * unaltered; and any additions, deletions, or changes to the original files - * must be clearly indicated in accompanying documentation. - * (2) If only executable code is distributed, then the accompanying - * documentation must state that "this software is based in part on the work of - * the Independent JPEG Group". - * (3) Permission for use of this software is granted only if the user accepts - * full responsibility for any undesirable consequences; the authors accept - * NO LIABILITY for damages of any kind. - * - * These conditions apply to any software derived from or based on the IJG code, - * not just to the unmodified library. If you use our work, you ought to - * acknowledge us. - * - * Permission is NOT granted for the use of any IJG author's name or company name - * in advertising or publicity relating to this software or products derived from - * it. This software may be referred to only as "the Independent JPEG Group's - * software". - * - * We specifically permit and encourage the use of this software as the basis of - * commercial products, provided that all warranty or liability claims are - * assumed by the product vendor. - * - * - * This file contains a floating-point implementation of the - * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine - * must also perform dequantization of the input coefficients. - * - * This implementation should be more accurate than either of the integer - * IDCT implementations. However, it may not give the same results on all - * machines because of differences in roundoff behavior. Speed will depend - * on the hardware's floating point capacity. - * - * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT - * on each row (or vice versa, but it's more convenient to emit a row at - * a time). Direct algorithms are also available, but they are much more - * complex and seem not to be any faster when reduced to code. - * - * This implementation is based on Arai, Agui, and Nakajima's algorithm for - * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in - * Japanese, but the algorithm is described in the Pennebaker & Mitchell - * JPEG textbook (see REFERENCES section in file README). The following code - * is based directly on figure 4-8 in P&M. - * While an 8-point DCT cannot be done in less than 11 multiplies, it is - * possible to arrange the computation so that many of the multiplies are - * simple scalings of the final outputs. These multiplies can then be - * folded into the multiplications or divisions by the JPEG quantization - * table entries. The AA&N method leaves only 5 multiplies and 29 adds - * to be done in the DCT itself. - * The primary disadvantage of this method is that with a fixed-point - * implementation, accuracy is lost due to imprecise representation of the - * scaled quantization values. However, that problem does not arise if - * we use floating point arithmetic. - */ - -#include <stdint.h> -#include "tinyjpeg-internal.h" - -#define FAST_FLOAT float -#define DCTSIZE 8 -#define DCTSIZE2 (DCTSIZE*DCTSIZE) - -#define DEQUANTIZE(coef,quantval) (((FAST_FLOAT) (coef)) * (quantval)) - -#if 1 && defined(__GNUC__) && (defined(__i686__) || defined(__x86_64__)) - -static inline unsigned char descale_and_clamp(int x, int shift) -{ - __asm__ ( - "add %3,%1\n" - "\tsar %2,%1\n" - "\tsub $-128,%1\n" - "\tcmovl %5,%1\n" /* Use the sub to compare to 0 */ - "\tcmpl %4,%1\n" - "\tcmovg %4,%1\n" - : "=r"(x) - : "0"(x), "Ir"(shift), "ir"(1UL<<(shift-1)), "r" (0xff), "r" (0) - ); - return x; -} - -#else -static inline unsigned char descale_and_clamp(int x, int shift) -{ - x += (1UL<<(shift-1)); - if (x<0) - x = (x >> shift) | ((~(0UL)) << (32-(shift))); - else - x >>= shift; - x += 128; - if (x>255) - return 255; - else if (x<0) - return 0; - else - return x; -} -#endif - -/* - * Perform dequantization and inverse DCT on one block of coefficients. - */ - -void -tinyjpeg_idct_float (struct component *compptr, uint8_t *output_buf, int stride) -{ - FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - FAST_FLOAT tmp10, tmp11, tmp12, tmp13; - FAST_FLOAT z5, z10, z11, z12, z13; - int16_t *inptr; - FAST_FLOAT *quantptr; - FAST_FLOAT *wsptr; - uint8_t *outptr; - int ctr; - FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */ - - /* Pass 1: process columns from input, store into work array. */ - - inptr = compptr->DCT; - quantptr = compptr->Q_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; ctr--) { - /* Due to quantization, we will usually find that many of the input - * coefficients are zero, especially the AC terms. We can exploit this - * by short-circuiting the IDCT calculation for any column in which all - * the AC terms are zero. In that case each output is equal to the - * DC coefficient (with scale factor as needed). - * With typical images and quantization tables, half or more of the - * column DCT calculations can be simplified this way. - */ - - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && - inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && - inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && - inptr[DCTSIZE*7] == 0) { - /* AC terms all zero */ - FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - wsptr[DCTSIZE*2] = dcval; - wsptr[DCTSIZE*3] = dcval; - wsptr[DCTSIZE*4] = dcval; - wsptr[DCTSIZE*5] = dcval; - wsptr[DCTSIZE*6] = dcval; - wsptr[DCTSIZE*7] = dcval; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - continue; - } - - /* Even part */ - - tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); - tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); - tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); - - tmp10 = tmp0 + tmp2; /* phase 3 */ - tmp11 = tmp0 - tmp2; - - tmp13 = tmp1 + tmp3; /* phases 5-3 */ - tmp12 = (tmp1 - tmp3) * ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */ - - tmp0 = tmp10 + tmp13; /* phase 2 */ - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - - z13 = tmp6 + tmp5; /* phase 6 */ - z10 = tmp6 - tmp5; - z11 = tmp4 + tmp7; - z12 = tmp4 - tmp7; - - tmp7 = z11 + z13; /* phase 5 */ - tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */ - - z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ - tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */ - tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; /* phase 2 */ - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - wsptr[DCTSIZE*0] = tmp0 + tmp7; - wsptr[DCTSIZE*7] = tmp0 - tmp7; - wsptr[DCTSIZE*1] = tmp1 + tmp6; - wsptr[DCTSIZE*6] = tmp1 - tmp6; - wsptr[DCTSIZE*2] = tmp2 + tmp5; - wsptr[DCTSIZE*5] = tmp2 - tmp5; - wsptr[DCTSIZE*4] = tmp3 + tmp4; - wsptr[DCTSIZE*3] = tmp3 - tmp4; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - } - - /* Pass 2: process rows from work array, store into output array. */ - /* Note that we must descale the results by a factor of 8 == 2**3. */ - - wsptr = workspace; - outptr = output_buf; - for (ctr = 0; ctr < DCTSIZE; ctr++) { - /* Rows of zeroes can be exploited in the same way as we did with columns. - * However, the column calculation has created many nonzero AC terms, so - * the simplification applies less often (typically 5% to 10% of the time). - * And testing floats for zero is relatively expensive, so we don't bother. - */ - - /* Even part */ - - tmp10 = wsptr[0] + wsptr[4]; - tmp11 = wsptr[0] - wsptr[4]; - - tmp13 = wsptr[2] + wsptr[6]; - tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13; - - tmp0 = tmp10 + tmp13; - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - z13 = wsptr[5] + wsptr[3]; - z10 = wsptr[5] - wsptr[3]; - z11 = wsptr[1] + wsptr[7]; - z12 = wsptr[1] - wsptr[7]; - - tmp7 = z11 + z13; - tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); - - z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ - tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */ - tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - /* Final output stage: scale down by a factor of 8 and range-limit */ - - outptr[0] = descale_and_clamp((int)(tmp0 + tmp7), 3); - outptr[7] = descale_and_clamp((int)(tmp0 - tmp7), 3); - outptr[1] = descale_and_clamp((int)(tmp1 + tmp6), 3); - outptr[6] = descale_and_clamp((int)(tmp1 - tmp6), 3); - outptr[2] = descale_and_clamp((int)(tmp2 + tmp5), 3); - outptr[5] = descale_and_clamp((int)(tmp2 - tmp5), 3); - outptr[4] = descale_and_clamp((int)(tmp3 + tmp4), 3); - outptr[3] = descale_and_clamp((int)(tmp3 - tmp4), 3); - - - wsptr += DCTSIZE; /* advance pointer to next row */ - outptr += stride; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgb24.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgb24.c deleted file mode 100644 index e1481f3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgb24.c +++ /dev/null @@ -1,372 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ -static unsigned char clamp(int i) -{ - if (i<0) - return 0; - else if (i>255) - return 255; - else - return i; -} - -/** - * YCrCb -> RGB24 (1x1) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_RGB24_1x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 8*3; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j++) { - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - - Y++; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/** - * YCrCb -> RGB24 (2x1) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_RGB24_2x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 16*3; - for (i = sy; i > 0; i--) { - - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - - if (j > 1) { - y = Y[1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - } - - Y += 2; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/** - * YCrCb -> RGB24 (1x2) - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void YCrCB_to_RGB24_1x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 8*3; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - - if (i > 1) { - y = Y[8] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - } - - Y++; - } - Y += 8; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/** - * YCrCb -> RGB24 (2x2) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void YCrCB_to_RGB24_2x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 16*3; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - - if (j > 1) { - y = Y[1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - } - - if (i > 1) { - y = Y[16+0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - - if (j > 1) { - y = Y[16+1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - } - } - - Y += 2; - } - Y += 16; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -static int initialize_rgb24(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width * 3; - if (priv->components[0] == NULL) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3; - bytes_per_mcu[0] = 3*8; - - return !priv->components[0]; -} - -static const struct tinyjpeg_colorspace format_rgb24 = - { - { - YCrCB_to_RGB24_1x1, - YCrCB_to_RGB24_1x2, - YCrCB_to_RGB24_2x1, - YCrCB_to_RGB24_2x2, - }, - tinyjpeg_decode_mcu_3comp_table, - initialize_rgb24 - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_RGB24 = &format_rgb24; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgba32.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgba32.c deleted file mode 100644 index d04f0f1..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/rgba32.c +++ /dev/null @@ -1,390 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ -static unsigned char clamp(int i) -{ - if (i<0) - return 0; - else if (i>255) - return 255; - else - return i; -} - -/** - * YCrCb -> RGBA32 (1x1) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_RGBA32_1x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 8*4; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - - Y++; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/** - * YCrCb -> RGBA32 (2x1) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_RGBA32_2x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = priv->bytes_per_row[0] - 16*4; - for (i = sy; i > 0; i--) { - for (j = sx; j > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - y = Y[0] << SCALEBITS; - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - - if (j > 1) { - y = Y[1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - } - - Y += 2; - } - - p += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - - -/** - * YCrCb -> RGBA32 (1x2) - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void YCrCB_to_RGBA32_1x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 8*4; - for (i = sy; i > 0; i -= 2) { - for (j = sx; j > 0; j--) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - - if (i > 1) { - y = Y[8] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - a = 255; - *p2++ = a; - } - - Y++; - } - Y += 8; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -/** - * YCrCb -> RGBA32 (2x2) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void YCrCB_to_RGBA32_2x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *Y, *Cb, *Cr; - unsigned char *p, *p2; - int i,j; - int offset_to_next_row; - -#define SCALEBITS 10 -#define ONE_HALF (1UL << (SCALEBITS-1)) -#define FIX(x) ((int)((x) * (1UL<<SCALEBITS) + 0.5)) - - p = priv->plane[0]; - p2 = priv->plane[0] + priv->bytes_per_row[0]; - Y = priv->Y; - Cb = priv->Cb; - Cr = priv->Cr; - offset_to_next_row = 2*priv->bytes_per_row[0] - 16*4; - for (i = sy; i > 0; i -= 2) { - for (j = sx; i > 0; j -= 2) { - - int y, cb, cr; - int add_r, add_g, add_b; - int r, g , b, a; - - cb = *Cb++ - 128; - cr = *Cr++ - 128; - add_r = FIX(1.40200) * cr + ONE_HALF; - add_g = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF; - add_b = FIX(1.77200) * cb + ONE_HALF; - - y = Y[0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - - if (j > 1) { - y = Y[1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p++ = clamp(b); - a = 255; - *p++ = a; - } - - if (i > 1) { - y = Y[16+0] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - a = 255; - *p2++ = a; - - if (j > 1) { - y = Y[16+1] << SCALEBITS; - r = (y + add_r) >> SCALEBITS; - *p2++ = clamp(r); - g = (y + add_g) >> SCALEBITS; - *p2++ = clamp(g); - b = (y + add_b) >> SCALEBITS; - *p2++ = clamp(b); - a = 255; - *p2++ = a; - } - } - - Y += 2; - } - Y += 16; - p += offset_to_next_row; - p2 += offset_to_next_row; - } - -#undef SCALEBITS -#undef ONE_HALF -#undef FIX - -} - -static int initialize_rgba32(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width * 4; - if (!priv->components[0]) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3; - bytes_per_mcu[0] = 4*8; - - return !priv->components[0]; -} - -static const struct tinyjpeg_colorspace format_rgba32 = - { - { - YCrCB_to_RGBA32_1x1, - YCrCB_to_RGBA32_1x2, - YCrCB_to_RGBA32_2x1, - YCrCB_to_RGBA32_2x2, - }, - tinyjpeg_decode_mcu_3comp_table, - initialize_rgba32 - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_RGBA32 = &format_rgba32; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg-internal.h b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg-internal.h deleted file mode 100644 index bb5c670..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg-internal.h +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Small jpeg decoder library (Internal header) - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - - -#ifndef __TINYJPEG_INTERNAL_H_ -#define __TINYJPEG_INTERNAL_H_ - -#include <setjmp.h> - -#define SANITY_CHECK 1 - -struct jdec_private; - -#define HUFFMAN_BITS_SIZE 256 -#define HUFFMAN_HASH_NBITS 9 -#define HUFFMAN_HASH_SIZE (1UL<<HUFFMAN_HASH_NBITS) -#define HUFFMAN_HASH_MASK (HUFFMAN_HASH_SIZE-1) - -#define HUFFMAN_TABLES 4 -#define COMPONENTS 3 -#define JPEG_MAX_WIDTH 4096 -#define JPEG_MAX_HEIGHT 4096 - -struct huffman_table -{ - /* Fast look up table, using HUFFMAN_HASH_NBITS bits we can have directly the symbol, - * if the symbol is <0, then we need to look into the tree table */ - short int lookup[HUFFMAN_HASH_SIZE]; - /* code size: give the number of bits of a symbol is encoded */ - unsigned char code_size[HUFFMAN_HASH_SIZE]; - /* some place to store value that is not encoded in the lookup table - * FIXME: Calculate if 256 value is enough to store all values - */ - uint16_t slowtable[16-HUFFMAN_HASH_NBITS][256]; -}; - -struct component -{ - unsigned int Hfactor; - unsigned int Vfactor; - float *Q_table; /* Pointer to the quantisation table to use */ - struct huffman_table *AC_table; - struct huffman_table *DC_table; - short int previous_DC; /* Previous DC coefficient */ - short int DCT[64]; /* DCT coef */ -#if SANITY_CHECK - unsigned int cid; -#endif -}; - - -typedef void (*decode_MCU_fct) (struct jdec_private *priv); -typedef void (*convert_colorspace_fct) (struct jdec_private *priv, int, int); - -struct jdec_private -{ - /* Public variables */ - uint8_t *components[COMPONENTS]; - unsigned int bytes_per_row[COMPONENTS]; - unsigned int width, height; /* Size of the image */ - unsigned int flags; - - /* Private variables */ - const unsigned char *stream_begin, *stream_end; - unsigned int stream_length; - - const unsigned char *stream; /* Pointer to the current stream */ - unsigned int reservoir, nbits_in_reservoir; - - struct component component_infos[COMPONENTS]; - float Q_tables[COMPONENTS][64]; /* quantization tables */ - struct huffman_table HTDC[HUFFMAN_TABLES]; /* DC huffman tables */ - struct huffman_table HTAC[HUFFMAN_TABLES]; /* AC huffman tables */ - int default_huffman_table_initialized; - int restart_interval; - int restarts_to_go; /* MCUs left in this restart interval */ - int last_rst_marker_seen; /* Rst marker is incremented each time */ - - /* Temp space used after the IDCT to store each components */ - uint8_t Y[64*4], Cr[64], Cb[64]; - - jmp_buf jump_state; - /* Internal Pointer use for colorspace conversion, do not modify it !!! */ - uint8_t *plane[COMPONENTS]; - -}; - -#define IDCT tinyjpeg_idct_float -void tinyjpeg_idct_float (struct component *compptr, uint8_t *output_buf, int stride); - -struct tinyjpeg_colorspace { - convert_colorspace_fct convert_colorspace[4]; - const decode_MCU_fct *decode_mcu_table; - int (*initialize)(struct jdec_private *, unsigned int *, unsigned int *); -}; - -void tinyjpeg_process_Huffman_data_unit(struct jdec_private *priv, int component); - -extern const decode_MCU_fct tinyjpeg_decode_mcu_3comp_table[4]; -extern const decode_MCU_fct tinyjpeg_decode_mcu_1comp_table[4]; - -enum std_markers { - DQT = 0xDB, /* Define Quantization Table */ - SOF = 0xC0, /* Start of Frame (size information) */ - DHT = 0xC4, /* Huffman Table */ - SOI = 0xD8, /* Start of Image */ - SOS = 0xDA, /* Start of Scan */ - RST = 0xD0, /* Reset Marker d0 -> .. */ - RST7 = 0xD7, /* Reset Marker .. -> d7 */ - EOI = 0xD9, /* End of Image */ - DRI = 0xDD, /* Define Restart Interval */ - APP0 = 0xE0, -}; - -#define cY 0 -#define cCb 1 -#define cCr 2 - -#define BLACK_Y 0 -#define BLACK_U 127 -#define BLACK_V 127 - -#define SANITY_CHECK 1 - -#if DEBUG -#define error(fmt, args...) do { \ - snprintf(error_string, sizeof(error_string), fmt, ## args); \ - return -1; \ -} while(0) - -#define trace(fmt, args...) do { \ - fprintf(stderr, fmt, ## args); \ - fflush(stderr); \ -} while(0) -#else -#define error(fmt, args...) do { return -1; } while(0) -#define trace(fmt, args...) do { } while (0) -#endif - -#ifndef __likely -# define __likely(x) (!!(x)) -#endif -#ifndef __unlikely -# define __unlikely(x) (!!(x)) -#endif - -#define min(x, y) ((x) < (y) ? (x) : (y)) -#define max(x, y) ((x) > (y) ? (x) : (y)) - -#if 0 -static char *print_bits(unsigned int value, char *bitstr) -{ - int i, j; - i=31; - while (i>0) - { - if (value & (1UL<<i)) - break; - i--; - } - j=0; - while (i>=0) - { - bitstr[j++] = (value & (1UL<<i))?'1':'0'; - i--; - } - bitstr[j] = 0; - return bitstr; -} - -static void print_next_16bytes(int offset, const unsigned char *stream) -{ - trace("%4.4x: %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n", - offset, - stream[0], stream[1], stream[2], stream[3], - stream[4], stream[5], stream[6], stream[7], - stream[8], stream[9], stream[10], stream[11], - stream[12], stream[13], stream[14], stream[15]); -} - -#endif - -#endif diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg.c deleted file mode 100644 index 3c6070f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/tinyjpeg.c +++ /dev/null @@ -1,1039 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> -#include <errno.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/* Global variable to return the last error found while deconding */ -static char error_string[256]; - -static const unsigned char zigzag[64] = -{ - 0, 1, 5, 6, 14, 15, 27, 28, - 2, 4, 7, 13, 16, 26, 29, 42, - 3, 8, 12, 17, 25, 30, 41, 43, - 9, 11, 18, 24, 31, 40, 44, 53, - 10, 19, 23, 32, 39, 45, 52, 54, - 20, 22, 33, 38, 46, 51, 55, 60, - 21, 34, 37, 47, 50, 56, 59, 61, - 35, 36, 48, 49, 57, 58, 62, 63 -}; - -/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ -/* IMPORTANT: these are only valid for 8-bit data precision! */ -static const unsigned char bits_dc_luminance[17] = -{ - 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 -}; -static const unsigned char val_dc_luminance[] = -{ - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 -}; - -static const unsigned char bits_dc_chrominance[17] = -{ - 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 -}; -static const unsigned char val_dc_chrominance[] = -{ - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 -}; - -static const unsigned char bits_ac_luminance[17] = -{ - 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d -}; -static const unsigned char val_ac_luminance[] = -{ - 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, - 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, - 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, - 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, - 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, - 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, - 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, - 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, - 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, - 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, - 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, - 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, - 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, - 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, - 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, - 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, - 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, - 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, - 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, - 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, - 0xf9, 0xfa -}; - -static const unsigned char bits_ac_chrominance[17] = -{ - 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 -}; - -static const unsigned char val_ac_chrominance[] = -{ - 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, - 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, - 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, - 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, - 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, - 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, - 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, - 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, - 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, - 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, - 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, - 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, - 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, - 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, - 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, - 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, - 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, - 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, - 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, - 0xf9, 0xfa -}; - - -/* - * 4 functions to manage the stream - * - * fill_nbits: put at least nbits in the reservoir of bits. - * But convert any 0xff,0x00 into 0xff - * get_nbits: read nbits from the stream, and put it in result, - * bits is removed from the stream and the reservoir is filled - * automaticaly. The result is signed according to the number of - * bits. - * look_nbits: read nbits from the stream without marking as read. - * skip_nbits: read nbits from the stream but do not return the result. - * - * stream: current pointer in the jpeg data (read bytes per bytes) - * nbits_in_reservoir: number of bits filled into the reservoir - * reservoir: register that contains bits information. Only nbits_in_reservoir - * is valid. - * nbits_in_reservoir - * <-- 17 bits --> - * Ex: 0000 0000 1010 0000 1111 0000 <== reservoir - * ^ - * bit 1 - * To get two bits from this example - * result = (reservoir >> 15) & 3 - * - */ -#define fill_nbits(reservoir,nbits_in_reservoir,stream,nbits_wanted) do { \ - while (nbits_in_reservoir<nbits_wanted) \ - { \ - unsigned char c; \ - if (stream >= priv->stream_end) \ - longjmp(priv->jump_state, -EIO); \ - c = *stream++; \ - reservoir <<= 8; \ - if (c == 0xff && *stream == 0x00) \ - stream++; \ - reservoir |= c; \ - nbits_in_reservoir+=8; \ - } \ -} while(0); - -/* Signed version !!!! */ -#define get_nbits(reservoir,nbits_in_reservoir,stream,nbits_wanted,result) do { \ - fill_nbits(reservoir,nbits_in_reservoir,stream,(nbits_wanted)); \ - result = ((reservoir)>>(nbits_in_reservoir-(nbits_wanted))); \ - nbits_in_reservoir -= (nbits_wanted); \ - reservoir &= ((1U<<nbits_in_reservoir)-1); \ - if ((unsigned int)result < (1UL<<((nbits_wanted)-1))) \ - result += (0xFFFFFFFFUL<<(nbits_wanted))+1; \ -} while(0); - -#define look_nbits(reservoir,nbits_in_reservoir,stream,nbits_wanted,result) do { \ - fill_nbits(reservoir,nbits_in_reservoir,stream,(nbits_wanted)); \ - result = ((reservoir)>>(nbits_in_reservoir-(nbits_wanted))); \ -} while(0); - -/* To speed up the decoding, we assume that the reservoir have enough bit - * slow version: - * #define skip_nbits(reservoir,nbits_in_reservoir,stream,nbits_wanted) do { \ - * fill_nbits(reservoir,nbits_in_reservoir,stream,(nbits_wanted)); \ - * nbits_in_reservoir -= (nbits_wanted); \ - * reservoir &= ((1U<<nbits_in_reservoir)-1); \ - * } while(0); - */ -#define skip_nbits(reservoir,nbits_in_reservoir,stream,nbits_wanted) do { \ - nbits_in_reservoir -= (nbits_wanted); \ - reservoir &= ((1U<<nbits_in_reservoir)-1); \ -} while(0); - - -#define be16_to_cpu(x) (((x)[0]<<8)|(x)[1]) - -static void resync(struct jdec_private *priv); - -/** - * Get the next (valid) huffman code in the stream. - * - * To speedup the procedure, we look HUFFMAN_HASH_NBITS bits and the code is - * lower than HUFFMAN_HASH_NBITS we have automaticaly the length of the code - * and the value by using two lookup table. - * Else if the value is not found, just search (linear) into an array for each - * bits is the code is present. - * - * If the code is not present for any reason, -1 is return. - */ -static int get_next_huffman_code(struct jdec_private *priv, struct huffman_table *huffman_table) -{ - int value, hcode; - unsigned int extra_nbits, nbits; - uint16_t *slowtable; - - look_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, HUFFMAN_HASH_NBITS, hcode); - value = huffman_table->lookup[hcode]; - if (__likely(value >= 0)) - { - unsigned int code_size = huffman_table->code_size[value]; - skip_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, code_size); - return value; - } - - /* Decode more bits each time ... */ - for (extra_nbits=0; extra_nbits<16-HUFFMAN_HASH_NBITS; extra_nbits++) - { - nbits = HUFFMAN_HASH_NBITS + 1 + extra_nbits; - - look_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, nbits, hcode); - slowtable = huffman_table->slowtable[extra_nbits]; - /* Search if the code is in this array */ - while (slowtable[0]) { - if (slowtable[0] == hcode) { - skip_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, nbits); - return slowtable[1]; - } - slowtable+=2; - } - } - return 0; -} - - - - -/** - * - * Decode a single block that contains the DCT coefficients. - * The table coefficients is already dezigzaged at the end of the operation. - * - */ -void tinyjpeg_process_Huffman_data_unit(struct jdec_private *priv, int component) -{ - unsigned char j; - unsigned int huff_code; - unsigned char size_val, count_0; - - struct component *c = &priv->component_infos[component]; - short int DCT[64]; - - - /* Initialize the DCT coef table */ - memset(DCT, 0, sizeof(DCT)); - - /* DC coefficient decoding */ - huff_code = get_next_huffman_code(priv, c->DC_table); - //trace("+ %x\n", huff_code); - if (huff_code) { - get_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, huff_code, DCT[0]); - DCT[0] += c->previous_DC; - c->previous_DC = DCT[0]; - } else { - DCT[0] = c->previous_DC; - } - - /* AC coefficient decoding */ - j = 1; - while (j<64) - { - huff_code = get_next_huffman_code(priv, c->AC_table); - //trace("- %x\n", huff_code); - - size_val = huff_code & 0xF; - count_0 = huff_code >> 4; - - if (size_val == 0) - { /* RLE */ - if (count_0 == 0) - break; /* EOB found, go out */ - else if (count_0 == 0xF) - j += 16; /* skip 16 zeros */ - } - else - { - j += count_0; /* skip count_0 zeroes */ - if (__unlikely(j >= 64)) - { - snprintf(error_string, sizeof(error_string), "Bad huffman data (buffer overflow)"); - break; - } - get_nbits(priv->reservoir, priv->nbits_in_reservoir, priv->stream, size_val, DCT[j]); - j++; - } - } - - for (j = 0; j < 64; j++) - c->DCT[j] = DCT[zigzag[j]]; -} - -/* - * Takes two array of bits, and build the huffman table for size, and code - * - * lookup will return the symbol if the code is less or equal than HUFFMAN_HASH_NBITS. - * code_size will be used to known how many bits this symbol is encoded. - * slowtable will be used when the first lookup didn't give the result. - */ -static void build_huffman_table(const unsigned char *bits, const unsigned char *vals, struct huffman_table *table) -{ - unsigned int i, j, code, code_size, val, nbits; - unsigned char huffsize[HUFFMAN_BITS_SIZE+1], *hz; - unsigned int huffcode[HUFFMAN_BITS_SIZE+1], *hc; - int next_free_entry; - - /* - * Build a temp array - * huffsize[X] => numbers of bits to write vals[X] - */ - hz = huffsize; - for (i=1; i<=16; i++) - { - for (j=1; j<=bits[i]; j++) - *hz++ = i; - } - *hz = 0; - - memset(table->lookup, 0xff, sizeof(table->lookup)); - for (i=0; i<(16-HUFFMAN_HASH_NBITS); i++) - table->slowtable[i][0] = 0; - - /* Build a temp array - * huffcode[X] => code used to write vals[X] - */ - code = 0; - hc = huffcode; - hz = huffsize; - nbits = *hz; - while (*hz) - { - while (*hz == nbits) - { - *hc++ = code++; - hz++; - } - code <<= 1; - nbits++; - } - - /* - * Build the lookup table, and the slowtable if needed. - */ - next_free_entry = -1; - for (i=0; huffsize[i]; i++) - { - val = vals[i]; - code = huffcode[i]; - code_size = huffsize[i]; - - trace("val=%2.2x code=%8.8x codesize=%2.2d\n", val, code, code_size); - - table->code_size[val] = code_size; - if (code_size <= HUFFMAN_HASH_NBITS) - { - /* - * Good: val can be put in the lookup table, so fill all value of this - * column with value val - */ - int repeat = 1UL<<(HUFFMAN_HASH_NBITS - code_size); - code <<= HUFFMAN_HASH_NBITS - code_size; - while ( repeat-- ) - table->lookup[code++] = val; - - } - else - { - /* Perhaps sorting the array will be an optimization */ - uint16_t *slowtable = table->slowtable[code_size-HUFFMAN_HASH_NBITS-1]; - while(slowtable[0]) - slowtable+=2; - slowtable[0] = code; - slowtable[1] = val; - slowtable[2] = 0; - /* TODO: NEED TO CHECK FOR AN OVERFLOW OF THE TABLE */ - } - - } -} - -static void build_default_huffman_tables(struct jdec_private *priv) -{ - if ( (priv->flags & TINYJPEG_FLAGS_MJPEG_TABLE) - && priv->default_huffman_table_initialized) - return; - - build_huffman_table(bits_dc_luminance, val_dc_luminance, &priv->HTDC[0]); - build_huffman_table(bits_ac_luminance, val_ac_luminance, &priv->HTAC[0]); - - build_huffman_table(bits_dc_chrominance, val_dc_chrominance, &priv->HTDC[1]); - build_huffman_table(bits_ac_chrominance, val_ac_chrominance, &priv->HTAC[1]); - - priv->default_huffman_table_initialized = 1; -} - - - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ - -static void print_SOF(const unsigned char *stream) -{ - int width, height, nr_components, precision; -#if DEBUG - const char *nr_components_to_string[] = { - "????", - "Grayscale", - "????", - "YCbCr", - "CYMK" - }; -#endif - - precision = stream[2]; - height = be16_to_cpu(stream+3); - width = be16_to_cpu(stream+5); - nr_components = stream[7]; - - trace("> SOF marker\n"); - trace("Size:%dx%d nr_components:%d (%s) precision:%d\n", - width, height, - nr_components, nr_components_to_string[nr_components], - precision); -} - -/******************************************************************************* - * - * JPEG/JFIF Parsing functions - * - * Note: only a small subset of the jpeg file format is supported. No markers, - * nor progressive stream is supported. - * - ******************************************************************************/ - -static void build_quantization_table(float *qtable, const unsigned char *ref_table) -{ - /* Taken from libjpeg. Copyright Independent JPEG Group's LLM idct. - * For float AA&N IDCT method, divisors are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - * We apply a further scale factor of 8. - * What's actually stored is 1/divisor so that the inner loop can - * use a multiplication rather than a division. - */ - int i, j; - static const double aanscalefactor[8] = { - 1.0, 1.387039845, 1.306562965, 1.175875602, - 1.0, 0.785694958, 0.541196100, 0.275899379 - }; - const unsigned char *zz = zigzag; - - for (i=0; i<8; i++) { - for (j=0; j<8; j++) { - *qtable++ = ref_table[*zz++] * aanscalefactor[i] * aanscalefactor[j]; - } - } - -} - -static int parse_DQT(struct jdec_private *priv, const unsigned char *stream) -{ - int qi; - float *table; - const unsigned char *dqt_block_end; - - trace("> DQT marker\n"); - dqt_block_end = stream + be16_to_cpu(stream); - stream += 2; /* Skip length */ - - while (stream < dqt_block_end) - { - qi = *stream++; -#if SANITY_CHECK - if (qi>>4) - error("16 bits quantization table is not supported\n"); - if (qi>4) - error("No more 4 quantization table is supported (got %d)\n", qi); -#endif - table = priv->Q_tables[qi]; - build_quantization_table(table, stream); - stream += 64; - } - trace("< DQT marker\n"); - return 0; -} - -static int parse_SOF(struct jdec_private *priv, const unsigned char *stream) -{ - int i, width, height, nr_components, cid, sampling_factor; - int Q_table; - struct component *c; - - trace("> SOF marker\n"); - print_SOF(stream); - - height = be16_to_cpu(stream+3); - width = be16_to_cpu(stream+5); - nr_components = stream[7]; -#if SANITY_CHECK - if (stream[2] != 8) - error("Precision other than 8 is not supported\n"); - if (width>JPEG_MAX_WIDTH || height>JPEG_MAX_HEIGHT) - error("Width and Height (%dx%d) seems suspicious\n", width, height); - if (nr_components != 3) - error("We only support YUV images\n"); -#endif - stream += 8; - for (i=0; i<nr_components; i++) { - cid = *stream++; - sampling_factor = *stream++; - Q_table = *stream++; - c = &priv->component_infos[i]; -#if SANITY_CHECK - c->cid = cid; - if (Q_table >= COMPONENTS) - error("Bad Quantization table index (got %d, max allowed %d)\n", Q_table, COMPONENTS-1); -#endif - c->Vfactor = sampling_factor&0xf; - c->Hfactor = sampling_factor>>4; - c->Q_table = priv->Q_tables[Q_table]; - trace("Component:%d factor:%dx%d Quantization table:%d\n", - cid, c->Hfactor, c->Hfactor, Q_table ); - - } - priv->width = width; - priv->height = height; - - trace("< SOF marker\n"); - - return 0; -} - -static int parse_SOS(struct jdec_private *priv, const unsigned char *stream) -{ - unsigned int i, cid, table; - unsigned int nr_components = stream[2]; - - trace("> SOS marker\n"); - -#if SANITY_CHECK - if (nr_components != 3) - error("We only support YCbCr image\n"); -#endif - - stream += 3; - for (i=0;i<nr_components;i++) { - cid = *stream++; - table = *stream++; -#if SANITY_CHECK - if ((table&0xf)>=4) - error("We do not support more than 2 AC Huffman table\n"); - if ((table>>4)>=4) - error("We do not support more than 2 DC Huffman table\n"); - if (cid != priv->component_infos[i].cid) - error("SOS cid order (%d:%d) isn't compatible with the SOF marker (%d:%d)\n", - i, cid, i, priv->component_infos[i].cid); - trace("ComponentId:%d tableAC:%d tableDC:%d\n", cid, table&0xf, table>>4); -#endif - priv->component_infos[i].AC_table = &priv->HTAC[table&0xf]; - priv->component_infos[i].DC_table = &priv->HTDC[table>>4]; - } - priv->stream = stream+3; - trace("< SOS marker\n"); - return 0; -} - -static int parse_DHT(struct jdec_private *priv, const unsigned char *stream) -{ - unsigned int count, i; - unsigned char huff_bits[17]; - int length, index; - - length = be16_to_cpu(stream) - 2; - stream += 2; /* Skip length */ - - trace("> DHT marker (length=%d)\n", length); - - while (length>0) { - index = *stream++; - - /* We need to calculate the number of bytes 'vals' will takes */ - huff_bits[0] = 0; - count = 0; - for (i=1; i<17; i++) { - huff_bits[i] = *stream++; - count += huff_bits[i]; - } -#if SANITY_CHECK - if (count >= HUFFMAN_BITS_SIZE) - error("No more than %d bytes is allowed to describe a huffman table", HUFFMAN_BITS_SIZE); - if ( (index &0xf) >= HUFFMAN_TABLES) - error("No more than %d Huffman tables is supported (got %d)\n", HUFFMAN_TABLES, index&0xf); - trace("Huffman table %s[%d] length=%d\n", (index&0xf0)?"AC":"DC", index&0xf, count); -#endif - - if (index & 0xf0 ) - build_huffman_table(huff_bits, stream, &priv->HTAC[index&0xf]); - else - build_huffman_table(huff_bits, stream, &priv->HTDC[index&0xf]); - - length -= 1; - length -= 16; - length -= count; - stream += count; - } - trace("< DHT marker\n"); - return 0; -} - -static int parse_DRI(struct jdec_private *priv, const unsigned char *stream) -{ - unsigned int length; - - trace("> DRI marker\n"); - - length = be16_to_cpu(stream); - -#if SANITY_CHECK - if (length != 4) - error("Length of DRI marker need to be 4\n"); -#endif - - priv->restart_interval = be16_to_cpu(stream+2); - -#if DEBUG - trace("Restart interval = %d\n", priv->restart_interval); -#endif - - trace("< DRI marker\n"); - - return 0; -} - - - -static void resync(struct jdec_private *priv) -{ - int i; - - /* Init DC coefficients */ - for (i=0; i<COMPONENTS; i++) - priv->component_infos[i].previous_DC = 0; - - priv->reservoir = 0; - priv->nbits_in_reservoir = 0; - if (priv->restart_interval > 0) - priv->restarts_to_go = priv->restart_interval; - else - priv->restarts_to_go = -1; -} - -static int find_next_rst_marker(struct jdec_private *priv) -{ - int rst_marker_found = 0; - int marker; - const unsigned char *stream = priv->stream; - - /* Parse marker */ - while (!rst_marker_found) - { - while (*stream++ != 0xff) - { - if (stream >= priv->stream_end) - error("EOF while search for a RST marker."); - } - /* Skip any padding ff byte (this is normal) */ - while (*stream == 0xff) - stream++; - - marker = *stream++; - if ((RST+priv->last_rst_marker_seen) == marker) - rst_marker_found = 1; - else if (marker >= RST && marker <= RST7) - error("Wrong Reset marker found, abording"); - else if (marker == EOI) - return 0; - } - trace("RST Marker %d found at offset %d\n", priv->last_rst_marker_seen, stream - priv->stream_begin); - - priv->stream = stream; - priv->last_rst_marker_seen++; - priv->last_rst_marker_seen &= 7; - - return 0; -} - -static int parse_JFIF(struct jdec_private *priv, const unsigned char *stream) -{ - int chuck_len; - int marker; - int sos_marker_found = 0; - int dht_marker_found = 0; - const unsigned char *next_chunck; - - /* Parse marker */ - while (!sos_marker_found) - { - if (*stream++ != 0xff) - goto bogus_jpeg_format; - /* Skip any padding ff byte (this is normal) */ - while (*stream == 0xff) - stream++; - - marker = *stream++; - chuck_len = be16_to_cpu(stream); - next_chunck = stream + chuck_len; - switch (marker) - { - case SOF: - if (parse_SOF(priv, stream) < 0) - return -1; - break; - case DQT: - if (parse_DQT(priv, stream) < 0) - return -1; - break; - case SOS: - if (parse_SOS(priv, stream) < 0) - return -1; - sos_marker_found = 1; - break; - case DHT: - if (parse_DHT(priv, stream) < 0) - return -1; - dht_marker_found = 1; - break; - case DRI: - if (parse_DRI(priv, stream) < 0) - return -1; - break; - default: - trace("> Unknown marker %2.2x\n", marker); - break; - } - - stream = next_chunck; - } - - if (!dht_marker_found) { - trace("No Huffman table loaded, using the default one\n"); - build_default_huffman_tables(priv); - } - -#ifdef SANITY_CHECK - if ( (priv->component_infos[cY].Hfactor < priv->component_infos[cCb].Hfactor) - || (priv->component_infos[cY].Hfactor < priv->component_infos[cCr].Hfactor)) - error("Horizontal sampling factor for Y should be greater than horitontal sampling factor for Cb or Cr\n"); - if ( (priv->component_infos[cY].Vfactor < priv->component_infos[cCb].Vfactor) - || (priv->component_infos[cY].Vfactor < priv->component_infos[cCr].Vfactor)) - error("Vertical sampling factor for Y should be greater than vertical sampling factor for Cb or Cr\n"); - if ( (priv->component_infos[cCb].Hfactor!=1) - || (priv->component_infos[cCr].Hfactor!=1) - || (priv->component_infos[cCb].Vfactor!=1) - || (priv->component_infos[cCr].Vfactor!=1)) - error("Sampling other than 1x1 for Cr and Cb is not supported"); -#endif - - return 0; -bogus_jpeg_format: - trace("Bogus jpeg format\n"); - return -1; -} - -/******************************************************************************* - * - * Functions exported of the library. - * - * Note: Some applications can access directly to internal pointer of the - * structure. It's is not recommended, but if you have many images to - * uncompress with the same parameters, some functions can be called to speedup - * the decoding. - * - ******************************************************************************/ - -/** - * Allocate a new tinyjpeg decoder object. - * - * Before calling any other functions, an object need to be called. - */ -struct jdec_private *tinyjpeg_init(void) -{ - struct jdec_private *priv; - - priv = (struct jdec_private *)calloc(1, sizeof(struct jdec_private)); - if (priv == NULL) - return NULL; - return priv; -} - -/** - * Free a tinyjpeg object. - * - * No others function can be called after this one. - */ -void tinyjpeg_free(struct jdec_private *priv) -{ - int i; - for (i=0; i<COMPONENTS; i++) { - if (priv->components[i]) - free(priv->components[i]); - priv->components[i] = NULL; - } - free(priv); -} - -/** - * Initialize the tinyjpeg object and prepare the decoding of the stream. - * - * Check if the jpeg can be decoded with this jpeg decoder. - * Fill some table used for preprocessing. - */ -int tinyjpeg_parse_header(struct jdec_private *priv, const unsigned char *buf, unsigned int size) -{ - int ret; - - /* Identify the file */ - if ((buf[0] != 0xFF) || (buf[1] != SOI)) - error("Not a JPG file ?\n"); - - priv->stream_begin = buf+2; - priv->stream_length = size-2; - priv->stream_end = priv->stream_begin + priv->stream_length; - - ret = parse_JFIF(priv, priv->stream_begin); - - return ret; -} - -/** - * Decode and convert the jpeg image into @pixfmt@ image - * - * Note: components will be automaticaly allocated if no memory is attached. - */ -int tinyjpeg_decode(struct jdec_private *priv, - const struct tinyjpeg_colorspace *pixfmt) -{ - int x, y, sx, sy; - int xshift_by_mcu, yshift_by_mcu; - int xstride_by_mcu, ystride_by_mcu; - unsigned int bytes_per_blocklines[3], bytes_per_mcu[3]; - decode_MCU_fct decode_MCU; - const decode_MCU_fct *decode_mcu_table; - convert_colorspace_fct convert_to_pixfmt; - uint8_t *pptr[3]; - - decode_mcu_table = pixfmt->decode_mcu_table; - - /* Fix: check return value */ - pixfmt->initialize(priv, bytes_per_blocklines, bytes_per_mcu); - - xshift_by_mcu = yshift_by_mcu = 3; - if ((priv->component_infos[cY].Hfactor | priv->component_infos[cY].Vfactor) == 1) { - decode_MCU = decode_mcu_table[0]; - convert_to_pixfmt = pixfmt->convert_colorspace[0]; - trace("Use decode 1x1 sampling\n"); - } else if (priv->component_infos[cY].Hfactor == 1) { - decode_MCU = decode_mcu_table[1]; - convert_to_pixfmt = pixfmt->convert_colorspace[1]; - yshift_by_mcu = 4; - trace("Use decode 1x2 sampling (not supported)\n"); - } else if (priv->component_infos[cY].Vfactor == 2) { - decode_MCU = decode_mcu_table[3]; - convert_to_pixfmt = pixfmt->convert_colorspace[3]; - xshift_by_mcu = 4; - yshift_by_mcu = 4; - trace("Use decode 2x2 sampling\n"); - } else { - decode_MCU = decode_mcu_table[2]; - convert_to_pixfmt = pixfmt->convert_colorspace[2]; - xshift_by_mcu = 4; - trace("Use decode 2x1 sampling\n"); - } - - resync(priv); - - /* Don't forget to that block can be either 8 or 16 lines */ - bytes_per_blocklines[0] <<= yshift_by_mcu-3; - bytes_per_blocklines[1] <<= yshift_by_mcu-3; - bytes_per_blocklines[2] <<= yshift_by_mcu-3; - - bytes_per_mcu[0] <<= xshift_by_mcu-3; - bytes_per_mcu[1] <<= xshift_by_mcu-3; - bytes_per_mcu[2] <<= xshift_by_mcu-3; - - xstride_by_mcu = 1 << xshift_by_mcu; - ystride_by_mcu = 1 << yshift_by_mcu; - - pptr[0] = priv->components[0]; - pptr[1] = priv->components[1]; - pptr[2] = priv->components[2]; - - trace("bpbl = %d, bpmcu = %d\n", - bytes_per_blocklines[0], bytes_per_mcu[0]); - - for (y = priv->height; y > 0; y -= ystride_by_mcu) - { - trace("Decoding row %d\n", priv->height-y); - priv->plane[0] = pptr[0]; pptr[0] += bytes_per_blocklines[0]; - priv->plane[1] = pptr[1]; pptr[1] += bytes_per_blocklines[1]; - priv->plane[2] = pptr[2]; pptr[2] += bytes_per_blocklines[2]; - - sy = min(y, ystride_by_mcu); - - for (x = priv->width; x > 0; x -= xstride_by_mcu) - { - sx = min(x, xstride_by_mcu); - trace("Block size: %dx%d\n", sx, sy); - - decode_MCU(priv); - convert_to_pixfmt(priv, sx, sy); - priv->plane[0] += bytes_per_mcu[0]; - priv->plane[1] += bytes_per_mcu[1]; - priv->plane[2] += bytes_per_mcu[2]; - if (priv->restarts_to_go>0) - { - priv->restarts_to_go--; - if (priv->restarts_to_go == 0) - { - priv->stream -= (priv->nbits_in_reservoir/8); - resync(priv); - if (find_next_rst_marker(priv) < 0) - return -1; - } - } - } - } - - trace("Input file size: %d\n", priv->stream_length+2); - trace("Input bytes actually read: %d\n", priv->stream - priv->stream_begin + 2); - - return 0; -} - -const char *tinyjpeg_get_errorstring(struct jdec_private *priv) -{ - /* FIXME: the error string must be store in the context */ - priv = priv; - return error_string; -} - -void tinyjpeg_get_size(struct jdec_private *priv, unsigned int *width, unsigned int *height) -{ - *width = priv->width; - *height = priv->height; -} - -int tinyjpeg_get_components(struct jdec_private *priv, unsigned char **components, unsigned int ncomponents) -{ - unsigned int i; - if (ncomponents > COMPONENTS) - ncomponents = COMPONENTS; - for (i=0; i<ncomponents; i++) - components[i] = priv->components[i]; - return 0; -} - -int tinyjpeg_set_components(struct jdec_private *priv, unsigned char * const *components, unsigned int ncomponents) -{ - unsigned int i; - if (ncomponents > COMPONENTS) - ncomponents = COMPONENTS; - for (i=0; i<ncomponents; i++) - priv->components[i] = components[i]; - return 0; -} - -int tinyjpeg_get_bytes_per_row(struct jdec_private *priv, - unsigned int *bytes, - unsigned int ncomponents) -{ - unsigned int i; - if (ncomponents > COMPONENTS) - ncomponents = COMPONENTS; - for (i=0; i<ncomponents; i++) - bytes[i] = priv->bytes_per_row[i]; - return 0; -} - -int tinyjpeg_set_bytes_per_row(struct jdec_private *priv, - const unsigned int *bytes, - unsigned int ncomponents) -{ - unsigned int i; - if (ncomponents > COMPONENTS) - ncomponents = COMPONENTS; - for (i=0; i<ncomponents; i++) - priv->bytes_per_row[i] = bytes[i]; - return 0; -} - -int tinyjpeg_set_flags(struct jdec_private *priv, int flags) -{ - int oldflags = priv->flags; - priv->flags = flags; - return oldflags; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/yuv420p.c b/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/yuv420p.c deleted file mode 100644 index c512089..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/jpeg/yuv420p.c +++ /dev/null @@ -1,288 +0,0 @@ -/* - * Small jpeg decoder library - * - * Copyright (c) 2006, Luc Saillard <luc@saillard.org> - * All rights reserved. - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * - Neither the name of the author nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - */ - -/* - * yuv420p.c - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdint.h> - -#include "tinyjpeg.h" -#include "tinyjpeg-internal.h" - -/******************************************************************************* - * - * Colorspace conversion routine - * - * - * Note: - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * - ******************************************************************************/ - -/** - * YCrCb -> YUV420P (1x1) - * .---. - * | 1 | - * `---' - */ -static void YCrCB_to_YUV420P_1x1(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *s, *y; - unsigned char *p; - int i,j; - - p = priv->plane[0]; - y = priv->Y; - for (i = sy; i > 0; i--) - { - memcpy(p, y, sx); - p += priv->bytes_per_row[0]; - y += 8; - } - - p = priv->plane[1]; - s = priv->Cb; - for (i = sy; i > 0; i--) - { - for (j = sx; j >= 0; j -= 2) { - *p++ = *s; - s += 2; - } - s += 8; /* Skip one line */ - p += priv->bytes_per_row[1] - 4; - } - - p = priv->plane[2]; - s = priv->Cr; - for (i=0; i<8; i+=2) - { - for (j = sx; j >= 0; j -= 2) { - *p++ = *s; - s += 2; - } - s += 8; /* Skip one line */ - p += priv->bytes_per_row[2] - 4; - } -} - -/** - * YCrCb -> YUV420P (2x1) - * .-------. - * | 1 | 2 | - * `-------' - */ -static void YCrCB_to_YUV420P_2x1(struct jdec_private *priv, int sx, int sy) -{ - unsigned char *p; - const unsigned char *s, *y1; - unsigned int i; - - p = priv->plane[0]; - y1 = priv->Y; - for (i = sy; i > 0; i--) - { - memcpy(p, y1, sx); - p += priv->bytes_per_row[0]; - y1 += 16; - } - - sx = (sx+1) >> 1; - - p = priv->plane[1]; - s = priv->Cb; - for (i = sy; i > 0; i -= 2) - { - memcpy(p, s, sx); - s += 16; /* Skip one line */ - p += priv->bytes_per_row[1]; - } - - p = priv->plane[2]; - s = priv->Cr; - for (i = sy; i > 0; i -= 2) - { - memcpy(p, s, sx); - s += 16; /* Skip one line */ - p += priv->bytes_per_row[2]; - } -} - - -/** - * YCrCb -> YUV420P (1x2) - * .---. - * | 1 | - * |---| - * | 2 | - * `---' - */ -static void YCrCB_to_YUV420P_1x2(struct jdec_private *priv, int sx, int sy) -{ - const unsigned char *s, *y; - unsigned char *p, *pr; - int i,j; - - p = priv->plane[0]; - y = priv->Y; - for (i = sy; i > 0; i++) - { - memcpy(p, y, sx); - p+=priv->bytes_per_row[0]; - y+=8; - } - - pr = priv->plane[1]; - s = priv->Cb; - for (i = sy; i > 0; i -= 2) - { - p = pr; - for (j = sx; j > 0; j -= 2) { - *p++ = *s; - s += 2; - } - pr += priv->bytes_per_row[1]; - } - - pr = priv->plane[2]; - s = priv->Cr; - for (i=0; i<8; i++) - { - p = pr; - for (j = sx; j > 0; j -= 2) { - *p++ = *s; - s += 2; - } - pr += priv->bytes_per_row[2] - 4; - } -} - -/** - * YCrCb -> YUV420P (2x2) - * .-------. - * | 1 | 2 | - * |---+---| - * | 3 | 4 | - * `-------' - */ -static void YCrCB_to_YUV420P_2x2(struct jdec_private *priv, int sx, int sy) -{ - unsigned char *p; - const unsigned char *s, *y1; - unsigned int i; - - p = priv->plane[0]; - y1 = priv->Y; - for (i = sy; i > 0; i--) - { - memcpy(p, y1, sx); - p += priv->bytes_per_row[0]; - y1 += 16; - } - - sx = (sx+1) >> 1; - - p = priv->plane[1]; - s = priv->Cb; - for (i = sy; i > 0; i -= 2) - { - memcpy(p, s, sx); - s += 8; - p += priv->bytes_per_row[1]; - } - - p = priv->plane[2]; - s = priv->Cr; - for (i = sy; i > 0; i -= 2) - { - memcpy(p, s, sx); - s += 8; - p += priv->bytes_per_row[2]; - } -} - -static int initialize_yuv420p(struct jdec_private *priv, - unsigned int *bytes_per_blocklines, - unsigned int *bytes_per_mcu) -{ - int half_height = (priv->height + 1) >> 2; - int half_width = (priv->width + 1) >> 2; - - if (!priv->bytes_per_row[0]) - priv->bytes_per_row[0] = priv->width; - if (!priv->components[0]) - priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]); - - if (!priv->bytes_per_row[1]) - priv->bytes_per_row[1] = half_width; - if (!priv->components[1]) - priv->components[1] = malloc(half_height * priv->bytes_per_row[1]); - - if (!priv->bytes_per_row[2]) - priv->bytes_per_row[2] = half_width; - if (!priv->components[2]) - priv->components[2] = malloc(half_height * priv->bytes_per_row[2]); - - bytes_per_mcu[0] = 8; - bytes_per_mcu[1] = 4; - bytes_per_mcu[2] = 4; - - bytes_per_blocklines[0] = priv->width << 3; - bytes_per_blocklines[1] = half_width << 2; - bytes_per_blocklines[2] = half_width << 2; - - /* Return nonzero on failure */ - return !priv->components[0] || !priv->components[1] || !priv->components[2]; -} - -static const struct tinyjpeg_colorspace format_yuv420p = - { - { - YCrCB_to_YUV420P_1x1, - YCrCB_to_YUV420P_1x2, - YCrCB_to_YUV420P_2x1, - YCrCB_to_YUV420P_2x2, - }, - tinyjpeg_decode_mcu_3comp_table, - initialize_yuv420p - }; - -const tinyjpeg_colorspace_t TINYJPEG_FMT_YUV420P = &format_yuv420p; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashldi3.S b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashldi3.S deleted file mode 100644 index f2cc11c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashldi3.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/i386/libgcc/__ashldi3.S - * - * 64-bit shl - */ - .text - .align 4 - .globl __ashldi3 - .type __ashldi3,@function -__ashldi3: -#ifndef REGPARM - movl 4(%esp),%eax - movl 8(%esp),%edx - movb 12(%esp),%cl -#endif - cmpb $32,%cl - jae 1f - - shldl %cl,%eax,%edx - shl %cl,%eax - ret - -1: - xorl %edx,%edx - shl %cl,%eax - xchgl %edx,%eax - ret - - .size __ashldi3,.-__ashldi3 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashrdi3.S b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashrdi3.S deleted file mode 100644 index 3f9c520..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__ashrdi3.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/i386/libgcc/__ashrdi3.S - * - * 64-bit sar - */ - .text - .align 4 - .globl __ashrdi3 - .type __ashrdi3,@function -__ashrdi3: -#ifndef REGPARM - movl 4(%esp),%eax - movl 8(%esp),%edx - movb 12(%esp),%cl -#endif - cmpb $32,%cl - jae 1f - - shrdl %cl,%edx,%eax - sarl %cl,%edx - ret - -1: - sarl %cl,%edx - movl %edx,%eax - cdq - ret - - .size __ashrdi3,.-__ashrdi3 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__divdi3.c b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__divdi3.c deleted file mode 100644 index 97c7795..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__divdi3.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/i386/libgcc/__divdi3.c - */ - -#include <stdint.h> -#include <stddef.h> - -extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t * rem); - -int64_t __divdi3(int64_t num, int64_t den) -{ - int minus = 0; - int64_t v; - - if (num < 0) { - num = -num; - minus = 1; - } - if (den < 0) { - den = -den; - minus ^= 1; - } - - v = __udivmoddi4(num, den, NULL); - if (minus) - v = -v; - - return v; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__lshrdi3.S b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__lshrdi3.S deleted file mode 100644 index eee3aac..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__lshrdi3.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/i386/libgcc/__lshrdi3.S - * - * 64-bit shr - */ - .text - .align 4 - .globl __lshrdi3 - .type __lshrdi3,@function -__lshrdi3: -#ifndef REGPARM - movl 4(%esp),%eax - movl 8(%esp),%edx - movb 12(%esp),%cl -#endif - cmpb $32,%cl - jae 1f - - shrdl %cl,%edx,%eax - shrl %cl,%edx - ret - -1: - shrl %cl,%edx - xorl %eax,%eax - xchgl %edx,%eax - ret - - .size __lshrdi3,.-__lshrdi3 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__moddi3.c b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__moddi3.c deleted file mode 100644 index 4fc5588..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__moddi3.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/i386/libgcc/__moddi3.c - */ - -#include <stdint.h> -#include <stddef.h> - -extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t * rem); - -int64_t __moddi3(int64_t num, int64_t den) -{ - int minus = 0; - int64_t v; - - if (num < 0) { - num = -num; - minus = 1; - } - if (den < 0) { - den = -den; - minus ^= 1; - } - - (void)__udivmoddi4(num, den, (uint64_t *)&v); - if (minus) - v = -v; - - return v; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__muldi3.S b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__muldi3.S deleted file mode 100644 index 648a88a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__muldi3.S +++ /dev/null @@ -1,34 +0,0 @@ -/* - * arch/i386/libgcc/__muldi3.S - * - * 64*64 = 64 bit unsigned multiplication - */ - - .text - .align 4 - .globl __muldi3 - .type __muldi3,@function -__muldi3: - push %esi -#ifndef REGPARM - movl 8(%esp),%eax - movl %eax,%esi - movl 16(%esp),%ecx - mull %ecx - imull 12(%esp),%ecx - imull 20(%esp),%esi - addl %ecx,%edx - addl %esi,%edx -#else - movl %eax,%esi - push %edx - mull %ecx - imull 8(%esp),%esi - addl %esi,%edx - pop %esi - imull %esi,%ecx - addl %ecx,%edx -#endif - pop %esi - ret - .size __muldi3,.-__muldi3 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__negdi2.S b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__negdi2.S deleted file mode 100644 index 37b0d2d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__negdi2.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * arch/i386/libgcc/__negdi2.S - * - * 64-bit negation - */ - - .text - .align 4 - .globl __negdi2 - .type __negdi2,@function -__negdi2: -#ifndef REGPARM - movl 4(%esp),%eax - movl 8(%esp),%edx -#endif - negl %edx - negl %eax - sbbl $0,%edx - ret - - .size __negdi2,.-__negdi2 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivdi3.c b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivdi3.c deleted file mode 100644 index db5b359..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivdi3.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * arch/i386/libgcc/__divdi3.c - */ - -#include <stdint.h> -#include <stddef.h> - -extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t * rem); - -uint64_t __udivdi3(uint64_t num, uint64_t den) -{ - return __udivmoddi4(num, den, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivmoddi4.c b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivmoddi4.c deleted file mode 100644 index dd60263..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__udivmoddi4.c +++ /dev/null @@ -1,32 +0,0 @@ -#include <klibc/diverr.h> -#include <stdint.h> - -uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t * rem_p) -{ - uint64_t quot = 0, qbit = 1; - - if (den == 0) { - __divide_error(); - return 0; /* If trap returns... */ - } - - /* Left-justify denominator and count shift */ - while ((int64_t) den >= 0) { - den <<= 1; - qbit <<= 1; - } - - while (qbit) { - if (den <= num) { - num -= den; - quot += qbit; - } - den >>= 1; - qbit >>= 1; - } - - if (rem_p) - *rem_p = num; - - return quot; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__umoddi3.c b/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__umoddi3.c deleted file mode 100644 index b897ee0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libgcc/__umoddi3.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * arch/i386/libgcc/__umoddi3.c - */ - -#include <stdint.h> -#include <stddef.h> - -extern uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t * rem); - -uint64_t __umoddi3(uint64_t num, uint64_t den) -{ - uint64_t v; - - (void)__udivmoddi4(num, den, &v); - return v; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/ANNOUNCE b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/ANNOUNCE deleted file mode 100644 index b0824ee..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/ANNOUNCE +++ /dev/null @@ -1,57 +0,0 @@ - -Libpng 1.2.44 - June 26, 2010 - -This is a public release of libpng, intended for use in production codes. - -Files available for download: - -Source files with LF line endings (for Unix/Linux) and with a -"configure" script - - libpng-1.2.44.tar.xz (LZMA-compressed, recommended) - libpng-1.2.44.tar.gz - libpng-1.2.44.tar.bz2 - -Source files with LF line endings (for Unix/Linux) without the -"configure" script - - libpng-1.2.44-no-config.tar.xz (LZMA-compressed, recommended) - libpng-1.2.44-no-config.tar.gz - libpng-1.2.44-no-config.tar.bz2 - -Source files with CRLF line endings (for Windows), without the -"configure" script - - lpng1244.zip - lpng1244.7z - lpng1244.tar.bz2 - -Project files - - libpng-1.2.44-project-netware.zip - libpng-1.2.44-project-wince.zip - -Other information: - - libpng-1.2.44-README.txt - libpng-1.2.44-KNOWNBUGS.txt - libpng-1.2.44-LICENSE.txt - libpng-1.2.44-Y2K-compliance.txt - libpng-1.2.44-[previous version]-diff.txt - -Changes since the last public release (1.2.43): - -version 1.2.44 [June 26, 2010] - - Rewrote png_process_IDAT_data to consistently treat extra data as warnings - and handle end conditions more cleanly. - Removed the now-redundant check for out-of-bounds new_row from example.c - - -Send comments/corrections/commendations to png-mng-implement at lists.sf.net - -(subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) or to glennrp at users.sourceforge.net - -Glenn R-P diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/CHANGES b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/CHANGES deleted file mode 100644 index 90a3e2b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/CHANGES +++ /dev/null @@ -1,2714 +0,0 @@ -/* -CHANGES - changes for libpng - -version 0.2 - added reader into png.h - fixed small problems in stub file - -version 0.3 - added pull reader - split up pngwrite.c to several files - added pnglib.txt - added example.c - cleaned up writer, adding a few new transformations - fixed some bugs in writer - interfaced with zlib 0.5 - added K&R support - added check for 64 KB blocks for 16 bit machines - -version 0.4 - cleaned up code and commented code - simplified time handling into png_time - created png_color_16 and png_color_8 to handle color needs - cleaned up color type defines - fixed various bugs - made various names more consistent - interfaced with zlib 0.71 - cleaned up zTXt reader and writer (using zlib's Reset functions) - split transformations into pngrtran.c and pngwtran.c - -version 0.5 - interfaced with zlib 0.8 - fixed many reading and writing bugs - saved using 3 spaces instead of tabs - -version 0.6 - added png_large_malloc() and png_large_free() - added png_size_t - cleaned up some compiler warnings - added png_start_read_image() - -version 0.7 - cleaned up lots of bugs - finished dithering and other stuff - added test program - changed name from pnglib to libpng - -version 0.71 [June, 1995] - changed pngtest.png for zlib 0.93 - fixed error in libpng.txt and example.c - -version 0.8 - cleaned up some bugs - added png_set_filler() - split up pngstub.c into pngmem.c, pngio.c, and pngerror.c - added #define's to remove unwanted code - moved png_info_init() to png.c - added old_size into png_realloc() - added functions to manually set filtering and compression info - changed compression parameters based on image type - optimized filter selection code - added version info - changed external functions passing floats to doubles (k&r problems?) - put all the configurable stuff in pngconf.h - enabled png_set_shift to work with paletted images on read - added png_read_update_info() - updates info structure with - transformations - -version 0.81 [August, 1995] - incorporated Tim Wegner's medium model code (thanks, Tim) - -version 0.82 [September, 1995] - [unspecified changes] - -version 0.85 [December, 1995] - added more medium model code (almost everything's a far) - added i/o, error, and memory callback functions - fixed some bugs (16 bit, 4 bit interlaced, etc.) - added first run progressive reader (barely tested) - -version 0.86 [January, 1996] - fixed bugs - improved documentation - -version 0.87 [January, 1996] - fixed medium model bugs - fixed other bugs introduced in 0.85 and 0.86 - added some minor documentation - -version 0.88 [January, 1996] - fixed progressive bugs - replaced tabs with spaces - cleaned up documentation - added callbacks for read/write and warning/error functions - -version 0.89 [July, 1996] - added new initialization API to make libpng work better with shared libs - we now have png_create_read_struct(), png_create_write_struct(), - png_create_info_struct(), png_destroy_read_struct(), and - png_destroy_write_struct() instead of the separate calls to - malloc and png_read_init(), png_info_init(), and png_write_init() - changed warning/error callback functions to fix bug - this means you - should use the new initialization API if you were using the old - png_set_message_fn() calls, and that the old API no longer exists - so that people are aware that they need to change their code - changed filter selection API to allow selection of multiple filters - since it didn't work in previous versions of libpng anyways - optimized filter selection code - fixed png_set_background() to allow using an arbitrary RGB color for - paletted images - fixed gamma and background correction for paletted images, so - png_correct_palette is not needed unless you are correcting an - external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED - in pngconf.h) - if nobody uses this, it may disappear in the future. - fixed bug with Borland 64K memory allocation (Alexander Lehmann) - fixed bug in interlace handling (Smarasderagd, I think) - added more error checking for writing and image to reduce invalid files - separated read and write functions so that they won't both be linked - into a binary when only reading or writing functionality is used - new pngtest image also has interlacing and zTXt - updated documentation to reflect new API - -version 0.90 [January, 1997] - made CRC errors/warnings on critical and ancillary chunks configurable - libpng will use the zlib CRC routines by (compile-time) default - changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner) - added external C++ wrapper statements to png.h (Gilles Dauphin) - allow PNG file to be read when some or all of file signature has already - been read from the beginning of the stream. ****This affects the size - of info_struct and invalidates all programs that use a shared libpng**** - fixed png_filler() declarations - fixed? background color conversions - fixed order of error function pointers to match documentation - current chunk name is now available in png_struct to reduce the number - of nearly identical error messages (will simplify multi-lingual - support when available) - try to get ready for unknown-chunk callback functions: - - previously read critical chunks are flagged, so the chunk handling - routines can determine if the chunk is in the right place - - all chunk handling routines have the same prototypes, so we will - be able to handle all chunks via a callback mechanism - try to fix Linux "setjmp" buffer size problems - removed png_large_malloc, png_large_free, and png_realloc functions. - -version 0.95 [March, 1997] - fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never - fixed bug in PNG file signature compares when start != 0 - changed parameter type of png_set_filler(...filler...) from png_byte - to png_uint_32 - added test for MACOS to ensure that both math.h and fp.h are not #included - added macros for libpng to be compiled as a Windows DLL (Andreas Kupries) - added "packswap" transformation, which changes the endianness of - packed-pixel bytes (Kevin Bracey) - added "strip_alpha" transformation, which removes the alpha channel of - input images without using it (not necessarily a good idea) - added "swap_alpha" transformation, which puts the alpha channel in front - of the color bytes instead of after - removed all implicit variable tests which assume NULL == 0 (I think) - changed several variables to "png_size_t" to show 16/32-bit limitations - added new pCAL chunk read/write support - added experimental filter selection weighting (Greg Roelofs) - removed old png_set_rgbx() and png_set_xrgb() functions that have been - obsolete for about 2 years now (use png_set_filler() instead) - added macros to read 16- and 32-bit ints directly from buffer, to be - used only on those systems that support it (namely PowerPC and 680x0) - With some testing, this may become the default for MACOS/PPC systems. - only calculate CRC on data if we are going to use it - added macros for zTXt compression type PNG_zTXt_COMPRESSION_??? - added macros for simple libpng debugging output selectable at compile time - removed PNG_READ_END_MODE in progressive reader (Smarasderagd) - more description of info_struct in libpng.txt and png.h - more instructions in example.c - more chunk types tested in pngtest.c - renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be - png_set_<chunk>. We now have corresponding png_get_<chunk> - functions in pngget.c to get information in info_ptr. This isolates - the application from the internal organization of png_info_struct - (good for shared library implementations). - -version 0.96 [May, 1997] - fixed serious bug with < 8bpp images introduced in 0.95 - fixed 256-color transparency bug (Greg Roelofs) - fixed up documentation (Greg Roelofs, Laszlo Nyul) - fixed "error" in pngconf.h for Linux setjmp() behaviour - fixed DOS medium model support (Tim Wegner) - fixed png_check_keyword() for case with error in static string text - added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul) - added typecasts to quiet compiler errors - added more debugging info - -version 0.97 [January, 1998] - removed PNG_USE_OWN_CRC capability - relocated png_set_crc_action from pngrutil.c to pngrtran.c - fixed typecasts of "new_key", etc. (Andreas Dilger) - added RFC 1152 [sic] date support - fixed bug in gamma handling of 4-bit grayscale - added 2-bit grayscale gamma handling (Glenn R-P) - added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P) - minor corrections in libpng.txt - added simple sRGB support (Glenn R-P) - easier conditional compiling, e.g. define PNG_READ/WRITE_NOT_FULLY_SUPPORTED; - all configurable options can be selected from command-line instead - of having to edit pngconf.h (Glenn R-P) - fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P) - added more conditions for png_do_background, to avoid changing - black pixels to background when a background is supplied and - no pixels are transparent - repaired PNG_NO_STDIO behaviour - tested NODIV support and made it default behaviour (Greg Roelofs) - added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler) - regularized version numbering scheme and bumped shared-library major - version number to 2 to avoid problems with libpng 0.89 apps (Greg Roelofs) - -version 0.98 [January, 1998] - cleaned up some typos in libpng.txt and in code documentation - fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler) - cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c - changed recommendation about file_gamma for PC images to .51 from .45, - in example.c and libpng.txt, added comments to distinguish between - screen_gamma, viewing_gamma, and display_gamma. - changed all references to RFC1152 to read RFC1123 and changed the - PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED - added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent) - changed srgb_intent from png_byte to int to avoid compiler bugs - -version 0.99 [January 30, 1998] - free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler) - fixed a longstanding "packswap" bug in pngtrans.c - fixed some inconsistencies in pngconf.h that prevented compiling with - PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined - fixed some typos and made other minor rearrangement of libpng.txt (Andreas) - changed recommendation about file_gamma for PC images to .50 from .51 in - example.c and libpng.txt, and changed file_gamma for sRGB images to .45 - added a number of functions to access information from the png structure - png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit) - added TARGET_MACOS similar to zlib-1.0.8 - define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined - added type casting to all png_malloc() function calls -version 0.99a [January 31, 1998] - Added type casts and parentheses to all returns that return a value.(Tim W.) -version 0.99b [February 4, 1998] - Added type cast png_uint_32 on malloc function calls where needed. - Changed type of num_hist from png_uint_32 to int (same as num_palette). - Added checks for rowbytes overflow, in case png_size_t is less than 32 bits. - Renamed makefile.elf to makefile.lnx. -version 0.99c [February 7, 1998] - More type casting. Removed erroneous overflow test in pngmem.c. - Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes. - Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5. -version 0.99d [February 11, 1998] - Renamed "far_to_near()" "png_far_to_near()" - Revised libpng.3 - Version 99c "buffered" operations didn't work as intended. Replaced them - with png_memcpy_check() and png_memset_check(). - Added many "if (png_ptr == NULL) return" to quell compiler warnings about - unused png_ptr, mostly in pngget.c and pngset.c. - Check for overlength tRNS chunk present when indexed-color PLTE is read. - Cleaned up spelling errors in libpng.3/libpng.txt - Corrected a problem with png_get_tRNS() which returned undefined trans array -version 0.99e [February 28, 1998] - Corrected png_get_tRNS() again. - Add parentheses for easier reading of pngget.c, fixed "||" should be "&&". - Touched up example.c to make more of it compileable, although the entire - file still can't be compiled (Willem van Schaik) - Fixed a bug in png_do_shift() (Bryan Tsai) - Added a space in png.h prototype for png_write_chunk_start() - Replaced pngtest.png with one created with zlib 1.1.1 - Changed pngtest to report PASS even when file size is different (Jean-loup G.) - Corrected some logic errors in png_do_invert_alpha() (Chris Patterson) -version 0.99f [March 5, 1998] - Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey) - Moved makefiles into a "scripts" directory, and added INSTALL instruction file - Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok) - Added pointers to "note on libpng versions" in makefile.lnx and README - Added row callback feature when reading and writing nonprogressive rows - and added a test of this feature in pngtest.c - Added user transform callbacks, with test of the feature in pngtest.c -version 0.99g [March 6, 1998, morning] - Minor changes to pngtest.c to suppress compiler warnings. - Removed "beta" language from documentation. -version 0.99h [March 6, 1998, evening] - Minor changes to previous minor changes to pngtest.c - Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED - and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro - Added user transform capability - -version 1.00 [March 7, 1998] - Changed several typedefs in pngrutil.c - Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik) - replaced "while(1)" with "for(;;)" - added PNGARG() to prototypes in pngtest.c and removed some prototypes - updated some of the makefiles (Tom Lane) - changed some typedefs (s_start, etc.) in pngrutil.c - fixed dimensions of "short_months" array in pngwrite.c - Replaced ansi2knr.c with the one from jpeg-v6 - -version 1.0.0 [March 8, 1998] - Changed name from 1.00 to 1.0.0 (Adam Costello) - Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert) -version 1.0.0a [March 9, 1998] - Fixed three bugs in pngrtran.c to make gamma+background handling consistent - (Greg Roelofs) - Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz - for major, minor, and bugfix releases. This is 10001. (Adam Costello, - Tom Lane) - Make months range from 1-12 in png_convert_to_rfc1123 -version 1.0.0b [March 13, 1998] - Quieted compiler complaints about two empty "for" loops in pngrutil.c - Minor changes to makefile.s2x - Removed #ifdef/#endif around a png_free() in pngread.c - -version 1.0.1 [March 14, 1998] - Changed makefile.s2x to reduce security risk of using a relative pathname - Fixed some typos in the documentation (Greg). - Fixed a problem with value of "channels" returned by png_read_update_info() -version 1.0.1a [April 21, 1998] - Optimized Paeth calculations by replacing abs() function calls with intrinsics - plus other loop optimizations. Improves avg decoding speed by about 20%. - Commented out i386istic "align" compiler flags in makefile.lnx. - Reduced the default warning level in some makefiles, to make them consistent. - Removed references to IJG and JPEG in the ansi2knr.c copyright statement. - Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation. - Added grayscale and 16-bit capability to png_do_read_filler(). - Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes - too large when writing an image with bit_depth < 8 (Bob Dellaca). - Corrected some bugs in the experimental weighted filtering heuristics. - Moved a misplaced pngrutil code block that truncates tRNS if it has more - than num_palette entries -- test was done before num_palette was defined. - Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins). - Changed compiler flags in makefile.wat for better optimization (Pawel Mrochen). -version 1.0.1b [May 2, 1998] - Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg). - Relocated the png_composite macros from pngrtran.c to png.h (Greg). - Added makefile.sco (contributed by Mike Hopkirk). - Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a. - Fixed a bug in pngrtran.c that would set channels=5 under some circumstances. - More work on the Paeth-filtering, achieving imperceptible speedup (A Kleinert). - More work on loop optimization which may help when compiled with C++ compilers. - Added warnings when people try to use transforms they've defined out. - Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran. - Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg) -version 1.0.1c [May 11, 1998] - Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for - filler bytes should have been 0xff instead of 0xf. - Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images. - Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED - out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h - Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED, - for consistency, in pngconf.h - Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier - to remove unwanted capabilities via the compile line - Made some corrections to grammar (which, it's) in documentation (Greg). - Corrected example.c, use of row_pointers in png_write_image(). -version 1.0.1d [May 24, 1998] - Corrected several statements that used side effects illegally in pngrutil.c - and pngtrans.c, that were introduced in version 1.0.1b - Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert) - More corrections to example.c, use of row_pointers in png_write_image() - and png_read_rows(). - Added pngdll.mak and pngdef.pas to scripts directory, contributed by - Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5 - Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.) - Changed several loops from count-down to count-up, for consistency. -version 1.0.1e [June 6, 1998] - Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and - added warnings when people try to set png_read_fn and png_write_fn in - the same structure. - Added a test such that png_do_gamma will be done when num_trans==0 - for truecolor images that have defined a background. This corrects an - error that was introduced in libpng-0.90 that can cause gamma processing - to be skipped. - Added tests in png.h to include "trans" and "trans_values" in structures - when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined. - Add png_free(png_ptr->time_buffer) in png_destroy_read_struct() - Moved png_convert_to_rfc_1123() from pngwrite.c to png.c - Added capability for user-provided malloc_fn() and free_fn() functions, - and revised pngtest.c to demonstrate their use, replacing the - PNGTEST_DEBUG_MEM feature. - Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner). - -version 1.0.2 [June 14, 1998] - Fixed two bugs in makefile.bor . -version 1.0.2a [December 30, 1998] - Replaced and extended code that was removed from png_set_filler() in 1.0.1a. - Fixed a bug in png_do_filler() that made it fail to write filler bytes in - the left-most pixel of each row (Kevin Bracey). - Changed "static pngcharp tIME_string" to "static char tIME_string[30]" - in pngtest.c (Duncan Simpson). - Fixed a bug in pngtest.c that caused pngtest to try to write a tIME chunk - even when no tIME chunk was present in the source file. - Fixed a problem in pngrutil.c: gray_to_rgb didn't always work with 16-bit. - Fixed a problem in png_read_push_finish_row(), which would not skip some - passes that it should skip, for images that are less than 3 pixels high. - Interchanged the order of calls to png_do_swap() and png_do_shift() - in pngwtran.c (John Cromer). - Added #ifdef PNG_DEBUG/#endif surrounding use of PNG_DEBUG in png.h . - Changed "bad adaptive filter type" from error to warning in pngrutil.c . - Fixed a documentation error about default filtering with 8-bit indexed-color. - Separated the PNG_NO_STDIO macro into PNG_NO_STDIO and PNG_NO_CONSOLE_IO - (L. Peter Deutsch). - Added png_set_rgb_to_gray() and png_get_rgb_to_gray_status() functions. - Added png_get_copyright() and png_get_header_version() functions. - Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c - Added information about debugging in libpng.txt and libpng.3 . - Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and makefile.sco. - Removed lines after Dynamic Dependencies" in makefile.aco . - Revised makefile.dec to make a shared library (Jeremie Petit). - Removed trailing blanks from all files. -version 1.0.2a [January 6, 1999] - Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h - Added "if" tests to silence complaints about unused png_ptr in png.h and png.c - Changed "check_if_png" function in example.c to return true (nonzero) if PNG. - Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig() - which is obsolete. - -version 1.0.3 [January 14, 1999] - Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice) - Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO. -version 1.0.3a [August 12, 1999] - Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning - if an attempt is made to read an interlaced image when it's not supported. - Added check if png_ptr->trans is defined before freeing it in pngread.c - Modified the Y2K statement to include versions back to version 0.71 - Fixed a bug in the check for valid IHDR bit_depth/color_types in pngrutil.c - Modified makefile.wat (added -zp8 flag, ".symbolic", changed some comments) - Replaced leading blanks with tab characters in makefile.hux - Changed "dworkin.wustl.edu" to "ccrc.wustl.edu" in various documents. - Changed (float)red and (float)green to (double)red, (double)green - in png_set_rgb_to_gray() to avoid "promotion" problems in AIX. - Fixed a bug in pngconf.h that omitted <stdio.h> when PNG_DEBUG==0 (K Bracey). - Reformatted libpng.3 and libpngpf.3 with proper fonts (script by J. vanZandt). - Updated documentation to refer to the PNG-1.2 specification. - Removed ansi2knr.c and left pointers to the latest source for ansi2knr.c - in makefile.knr, INSTALL, and README (L. Peter Deutsch) - Fixed bugs in calculation of the length of rowbytes when adding alpha - channels to 16-bit images, in pngrtran.c (Chris Nokleberg) - Added function png_set_user_transform_info() to store user_transform_ptr, - user_depth, and user_channels into the png_struct, and a function - png_get_user_transform_ptr() to retrieve the pointer (Chris Nokleberg) - Added function png_set_empty_plte_permitted() to make libpng useable - in MNG applications. - Corrected the typedef for png_free_ptr in png.h (Jesse Jones). - Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be - consistent with PNG-1.2, and allow variance of 500 before complaining. - Added assembler code contributed by Intel in file pngvcrd.c and modified - makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation, Gilles Vollant) - Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy. - Added some aliases for png_set_expand() in pngrtran.c, namely - png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS() - (Greg Roelofs, in "PNG: The Definitive Guide"). - Added makefile.beo for BEOS on X86, contributed by Sander Stok. -version 1.0.3b [August 26, 1999] - Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h - Changed leading blanks to tabs in all makefiles. - Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code. - Made alternate versions of png_set_expand() in pngrtran.c, namely - png_set_gray_1_2_4_to_8, png_set_palette_to_rgb, and png_set_tRNS_to_alpha - (Greg Roelofs, in "PNG: The Definitive Guide"). Deleted the 1.0.3a aliases. - Relocated start of 'extern "C"' block in png.h so it doesn't include pngconf.h - Revised calculation of num_blocks in pngmem.c to avoid a potentially - negative shift distance, whose results are undefined in the C language. - Added a check in pngset.c to prevent writing multiple tIME chunks. - Added a check in pngwrite.c to detect invalid small window_bits sizes. -version 1.0.3d [September 4, 1999] - Fixed type casting of igamma in pngrutil.c - Added new png_expand functions to scripts/pngdef.pas and pngos2.def - Added a demo read_user_transform_fn that examines the row filters in pngtest.c - -version 1.0.4 [September 24, 1999] - Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined - Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h - Made several minor corrections to pngtest.c - Renamed the makefiles with longer but more user friendly extensions. - Copied the PNG copyright and license to a separate LICENSE file. - Revised documentation, png.h, and example.c to remove reference to - "viewing_gamma" which no longer appears in the PNG specification. - Revised pngvcrd.c to use MMX code for interlacing only on the final pass. - Updated pngvcrd.c to use the faster C filter algorithms from libpng-1.0.1a - Split makefile.win32vc into two versions, makefile.vcawin32 (uses MMX - assembler code) and makefile.vcwin32 (doesn't). - Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING) - Added a copy of pngnow.png to the distribution. -version 1.0.4a [September 25, 1999] - Increase max_pixel_depth in pngrutil.c if a user transform needs it. - Changed several division operations to right-shifts in pngvcrd.c -version 1.0.4b [September 30, 1999] - Added parentheses in line 3732 of pngvcrd.c - Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1 -version 1.0.4c [October 1, 1999] - Added a "png_check_version" function in png.c and pngtest.c that will generate - a helpful compiler error if an old png.h is found in the search path. - Changed type of png_user_transform_depth|channels from int to png_byte. -version 1.0.4d [October 6, 1999] - Changed 0.45 to 0.45455 in png_set_sRGB() - Removed unused PLTE entries from pngnow.png - Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly. -version 1.0.4e [October 10, 1999] - Fixed sign error in pngvcrd.c (Greg Roelofs) - Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P) -version 1.0.4f [October 15, 1999] - Surrounded example.c code with #if 0 .. #endif to prevent people from - inadvertently trying to compile it. - Changed png_get_header_version() from a function to a macro in png.h - Added type casting mostly in pngrtran.c and pngwtran.c - Removed some pointless "ptr = NULL" in pngmem.c - Added a "contrib" directory containing the source code from Greg's book. - -version 1.0.5 [October 15, 1999] - Minor editing of the INSTALL and README files. -version 1.0.5a [October 23, 1999] - Added contrib/pngsuite and contrib/pngminus (Willem van Schaik) - Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans) - Further optimization and bugfix of pngvcrd.c - Revised pngset.c so that it does not allocate or free memory in the user's - text_ptr structure. Instead, it makes its own copy. - Created separate write_end_info_struct in pngtest.c for a more severe test. - Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak. -version 1.0.5b [November 23, 1999] - Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and - PNG_FLAG_WROTE_tIME from flags to mode. - Added png_write_info_before_PLTE() function. - Fixed some typecasting in contrib/gregbook/*.c - Updated scripts/makevms.com and added makevms.com to contrib/gregbook - and contrib/pngminus (Martin Zinser) -version 1.0.5c [November 26, 1999] - Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr. - Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to - accommodate making DLL's: Moved usr_png_ver from global variable to function - png_get_header_ver() in png.c. Moved png_sig to png_sig_bytes in png.c and - eliminated use of png_sig in pngwutil.c. Moved the various png_CHNK arrays - into pngtypes.h. Eliminated use of global png_pass arrays. Declared the - png_CHNK and png_pass arrays to be "const". Made the global arrays - available to applications (although none are used in libpng itself) when - PNG_NO_GLOBAL_ARRAYS is not defined or when PNG_GLOBAL_ARRAYS is defined. - Removed some extraneous "-I" from contrib/pngminus/makefile.std - Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2. - Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3 -version 1.0.5d [November 29, 1999] - Add type cast (png_const_charp) two places in png.c - Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays. - Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available - to applications a macro "PNG_USE_LOCAL_ARRAYS". - Remove all the new declarations with #ifdef/#endif when - PNG_USE_GLOBAL_ARRAYS is defined. - Added PNG_EXPORT_VAR macro to accommodate making DLL's. -version 1.0.5e [November 30, 1999] - Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text - structure; refactored the inflate/deflate support to make adding new chunks - with trailing compressed parts easier in the future, and added new functions - png_free_iCCP, png_free_pCAL, png_free_sPLT, png_free_text, png_get_iCCP, - png_get_spalettes, png_set_iCCP, png_set_spalettes (Eric S. Raymond). - NOTE: Applications that write text chunks MUST define png_text->lang - before calling png_set_text(). It must be set to NULL if you want to - write tEXt or zTXt chunks. If you want your application to be able to - run with older versions of libpng, use - - #ifdef PNG_iTXt_SUPPORTED - png_text[i].lang = NULL; - #endif - - Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned - offsets (Eric S. Raymond). - Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into - PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED - macros, leaving the separate macros also available. - Removed comments on #endifs at the end of many short, non-nested #if-blocks. -version 1.0.5f [December 6, 1999] - Changed makefile.solaris to issue a warning about potential problems when - the ucb "ld" is in the path ahead of the ccs "ld". - Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3. - Added sCAL chunk support (Eric S. Raymond). -version 1.0.5g [December 7, 1999] - Fixed "png_free_spallettes" typo in png.h - Added code to handle new chunks in pngpread.c - Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block - Added "translated_key" to png_text structure and png_write_iTXt(). - Added code in pngwrite.c to work around a newly discovered zlib bug. -version 1.0.5h [December 10, 1999] - NOTE: regarding the note for version 1.0.5e, the following must also - be included in your code: - png_text[i].translated_key = NULL; - Unknown chunk handling is now supported. - Option to eliminate all floating point support was added. Some new - fixed-point functions such as png_set_gAMA_fixed() were added. - Expanded tabs and removed trailing blanks in source files. -version 1.0.5i [December 13, 1999] - Added some type casts to silence compiler warnings. - Renamed "png_free_spalette" to "png_free_spalettes" for consistency. - Removed leading blanks from a #define in pngvcrd.c - Added some parameters to the new png_set_keep_unknown_chunks() function. - Added a test for up->location != 0 in the first instance of writing - unknown chunks in pngwrite.c - Changed "num" to "i" in png_free_spalettes() and png_free_unknowns() to - prevent recursion. - Added png_free_hIST() function. - Various patches to fix bugs in the sCAL and integer cHRM processing, - and to add some convenience macros for use with sCAL. -version 1.0.5j [December 21, 1999] - Changed "unit" parameter of png_write_sCAL from png_byte to int, to work - around buggy compilers. - Added new type "png_fixed_point" for integers that hold float*100000 values - Restored backward compatibility of tEXt/zTXt chunk processing: - Restored the first four members of png_text to the same order as v.1.0.5d. - Added members "lang_key" and "itxt_length" to png_text struct. Set - text_length=0 when "text" contains iTXt data. Use the "compression" - member to distinguish among tEXt/zTXt/iTXt types. Added - PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros. - The "Note" above, about backward incompatibility of libpng-1.0.5e, no - longer applies. - Fixed png_read|write_iTXt() to read|write parameters in the right order, - and to write the iTXt chunk after IDAT if it appears in the end_ptr. - Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs) - Reversed the order of trying to write floating-point and fixed-point gAMA. -version 1.0.5k [December 27, 1999] - Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))" - Added png_handle_as_unknown() function (Glenn) - Added png_free_chunk_list() function and chunk_list and num_chunk_list members - of png_ptr. - Eliminated erroneous warnings about multiple sPLT chunks and sPLT-after-PLTE. - Fixed a libpng-1.0.5h bug in pngrutil.c that was issuing erroneous warnings - about ignoring incorrect gAMA with sRGB (gAMA was in fact not ignored) - Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR). - Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is. - Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP(). -version 1.0.5l [January 1, 2000] - Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr() - for setting a callback function to handle unknown chunks and for - retrieving the associated user pointer (Glenn). -version 1.0.5m [January 7, 2000] - Added high-level functions png_read_png(), png_write_png(), png_free_pixels(). -version 1.0.5n [January 9, 2000] - Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its - own memory for info_ptr->palette. This makes it safe for the calling - application to free its copy of the palette any time after it calls - png_set_PLTE(). -version 1.0.5o [January 20, 2000] - Cosmetic changes only (removed some trailing blanks and TABs) -version 1.0.5p [January 31, 2000] - Renamed pngdll.mak to makefile.bd32 - Cosmetic changes in pngtest.c -version 1.0.5q [February 5, 2000] - Relocated the makefile.solaris warning about PATH problems. - Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg) - Revised makefile.gcmmx - Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros -version 1.0.5r [February 7, 2000] - Removed superfluous prototype for png_get_itxt from png.h - Fixed a bug in pngrtran.c that improperly expanded the background color. - Return *num_text=0 from png_get_text() when appropriate, and fix documentation - of png_get_text() in libpng.txt/libpng.3. -version 1.0.5s [February 18, 2000] - Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the - new error handler that's planned for the next libpng release, and changed - example.c, pngtest.c, and contrib programs to use this macro. - Revised some of the DLL-export macros in pngconf.h (Greg Roelofs) - Fixed a bug in png_read_png() that caused it to fail to expand some images - that it should have expanded. - Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions - in pngget.c - Changed the allocation of palette, history, and trans arrays back to - the version 1.0.5 method (linking instead of copying) which restores - backward compatibility with version 1.0.5. Added some remarks about - that in example.c. Added "free_me" member to info_ptr and png_ptr - and added png_free_data() function. - Updated makefile.linux and makefile.gccmmx to make directories conditionally. - Made cosmetic changes to pngasmrd.h - Added png_set_rows() and png_get_rows(), for use with png_read|write_png(). - Modified png_read_png() to allocate info_ptr->row_pointers only if it - hasn't already been allocated. -version 1.0.5t [March 4, 2000] - Changed png_jmp_env() migration aiding macro to png_jmpbuf(). - Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c - Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when - PNG_FLAG_HAVE_CHUNK_HEADER was moved into png_ptr->mode in version 1.0.5b - Files in contrib/gregbook were revised to use png_jmpbuf() and to select - a 24-bit visual if one is available, and to allow abbreviated options. - Files in contrib/pngminus were revised to use the png_jmpbuf() macro. - Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s -version 1.0.5u [March 5, 2000] - Simplified the code that detects old png.h in png.c and pngtest.c - Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp) - Increased precision of rgb_to_gray calculations from 8 to 15 bits and - added png_set_rgb_to_gray_fixed() function. - Added makefile.bc32 (32-bit Borland C++, C mode) -version 1.0.5v [March 11, 2000] - Added some parentheses to the png_jmpbuf macro definition. - Updated references to the zlib home page, which has moved to freesoftware.com. - Corrected bugs in documentation regarding png_read_row() and png_write_row(). - Updated documentation of png_rgb_to_gray calculations in libpng.3/libpng.txt. - Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3, - revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin) - -version 1.0.6 [March 20, 2000] - Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c - Added makefile.sggcc (SGI IRIX with gcc) -version 1.0.6d [April 7, 2000] - Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO - Added data_length parameter to png_decompress_chunk() function - Revised documentation to remove reference to abandoned png_free_chnk functions - Fixed an error in png_rgb_to_gray_fixed() - Revised example.c, usage of png_destroy_write_struct(). - Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file - Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c - Simplify png_sig_bytes() function to remove use of non-ISO-C strdup(). -version 1.0.6e [April 9, 2000] - Added png_data_freer() function. - In the code that checks for over-length tRNS chunks, added check of - info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann) - Minor revisions of libpng.txt/libpng.3. - Check for existing data and free it if the free_me flag is set, in png_set_*() - and png_handle_*(). - Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED - is defined. - Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c - and mentioned the purposes of the two macros in libpng.txt/libpng.3. -version 1.0.6f [April 14, 2000] - Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data. - Add checks in png_set_text() for NULL members of the input text structure. - Revised libpng.txt/libpng.3. - Removed superfluous prototype for png_set_itxt from png.h - Removed "else" from pngread.c, after png_error(), and changed "0" to "length". - Changed several png_errors about malformed ancillary chunks to png_warnings. -version 1.0.6g [April 24, 2000] - Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined. - Relocated paragraph about png_set_background() in libpng.3/libpng.txt - and other revisions (Matthias Benckmann) - Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and - png_ptr members to restore binary compatibility with libpng-1.0.5 - (breaks compatibility with libpng-1.0.6). -version 1.0.6h [April 24, 2000] - Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds - libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h) - This is a temporary change for test purposes. -version 1.0.6i [May 2, 2000] - Rearranged some members at the end of png_info and png_struct, to put - unknown_chunks_num and free_me within the original size of the png_structs - and free_me, png_read_user_fn, and png_free_fn within the original png_info, - because some old applications allocate the structs directly instead of - using png_create_*(). - Added documentation of user memory functions in libpng.txt/libpng.3 - Modified png_read_png so that it will use user_allocated row_pointers - if present, unless free_me directs that it be freed, and added description - of the use of png_set_rows() and png_get_rows() in libpng.txt/libpng.3. - Added PNG_LEGACY_SUPPORTED macro, and #ifdef out all new (since version - 1.00) members of png_struct and png_info, to regain binary compatibility - when you define this macro. Capabilities lost in this event - are user transforms (new in version 1.0.0),the user transform pointer - (new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT, - the high-level interface, and unknown chunks support (all new in 1.0.6). - This was necessary because of old applications that allocate the structs - directly as authors were instructed to do in libpng-0.88 and earlier, - instead of using png_create_*(). - Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which - can be used to detect codes that directly allocate the structs, and - code to check these modes in png_read_init() and png_write_init() and - generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED - was not defined. - Added makefile.intel and updated makefile.watcom (Pawel Mrochen) -version 1.0.6j [May 3, 2000] - Overloaded png_read_init() and png_write_init() with macros that convert - calls to png_read_init_2() or png_write_init_2() that check the version - and structure sizes. -version 1.0.7beta11 [May 7, 2000] - Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes - which are no longer used. - Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is - defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXT_SUPPORTED - is defined. - Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory - overrun when old applications fill the info_ptr->text structure directly. - Added PNGAPI macro, and added it to the definitions of all exported functions. - Relocated version macro definitions ahead of the includes of zlib.h and - pngconf.h in png.h. -version 1.0.7beta12 [May 12, 2000] - Revised pngset.c to avoid a problem with expanding the png_debug macro. - Deleted some extraneous defines from pngconf.h - Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined. - Use MSC _RPTn debugging instead of fprintf if _MSC_VER is defined. - Added png_access_version_number() function. - Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data(). - Expanded libpng.3/libpng.txt information about png_data_freer(). -version 1.0.7beta14 [May 17, 2000] (beta13 was not published) - Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as - warnings instead of errors, as pngrutil.c does. - Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png() - will actually write IDATs. - Made the default PNG_USE_LOCAL_ARRAYS depend on PNG_DLL instead of WIN32. - Make png_free_data() ignore its final parameter except when freeing data - that can have multiple instances (text, sPLT, unknowns). - Fixed a new bug in png_set_rows(). - Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5. - Added png_set_invalid() function. - Fixed incorrect illustrations of png_destroy_write_struct() in example.c. -version 1.0.7beta15 [May 30, 2000] - Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce - fewer error messages. - Rearranged checks for Z_OK to check the most likely path first in pngpread.c - and pngwutil.c. - Added checks in pngtest.c for png_create_*() returning NULL, and mentioned - in libpng.txt/libpng.3 the need for applications to check this. - Changed names of png_default_*() functions in pngtest to pngtest_*(). - Changed return type of png_get_x|y_offset_*() from png_uint_32 to png_int_32. - Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c - Set each pointer to NULL after freeing it in png_free_data(). - Worked around a problem in pngconf.h; AIX's strings.h defines an "index" - macro that conflicts with libpng's png_color_16.index. (Dimitri Papadapoulos) - Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux). -version 1.0.7beta16 [June 4, 2000] - Revised the workaround of AIX string.h "index" bug. - Added a check for overlength PLTE chunk in pngrutil.c. - Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer - indexing in pngrutil.c and pngwutil.c to accommodate a buggy compiler. - Added a warning in png_decompress_chunk() when it runs out of data, e.g. - when it tries to read an erroneous PhotoShop iCCP chunk. - Added PNG_USE_DLL macro. - Revised the copyright/disclaimer/license notice. - Added contrib/msvctest directory -version 1.0.7rc1 [June 9, 2000] - Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200) - Added contrib/visupng directory (Willem van Schaik) -version 1.0.7beta18 [June 23, 2000] - Revised PNGAPI definition, and pngvcrd.c to work with __GCC__ - and do not redefine PNGAPI if it is passed in via a compiler directive. - Revised visupng/PngFile.c to remove returns from within the Try block. - Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros. - Updated contrib/visupng/cexcept.h to version 1.0.0. - Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks. -version 1.0.7rc2 [June 28, 2000] - Updated license to include disclaimers required by UCITA. - Fixed "DJBPP" typo in pnggccrd.c introduced in beta18. - -version 1.0.7 [July 1, 2000] - Revised the definition of "trans_values" in libpng.3/libpng.txt -version 1.0.8beta1 [July 8, 2000] - Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks. - Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and - pngwutil.c. - Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h. - Removed unused "#include <assert.h>" from png.c - Added WindowsCE support. - Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment. -version 1.0.8beta2 [July 10, 2000] - Added project files to the wince directory and made further revisions - of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE. -version 1.0.8beta3 [July 11, 2000] - Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS() - for indexed-color input files to avoid potential double-freeing trans array - under some unusual conditions; problem was introduced in version 1.0.6f. - Further revisions to pngtest.c and files in the wince subdirectory. -version 1.0.8beta4 [July 14, 2000] - Added the files pngbar.png and pngbar.jpg to the distribution. - Added makefile.cygwin, and cygwin support in pngconf.h - Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory) -version 1.0.8rc1 [July 16, 2000] - Revised png_debug() macros and statements to eliminate compiler warnings. - -version 1.0.8 [July 24, 2000] - Added png_flush() in pngwrite.c, after png_write_IEND(). - Updated makefile.hpux to build a shared library. -version 1.0.9beta1 [November 10, 2000] - Fixed typo in scripts/makefile.hpux - Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser) - Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser) - Changed "cdrom.com" in documentation to "libpng.org" - Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg). - Changed type of "params" from voidp to png_voidp in png_read|write_png(). - Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h. - Revised the 3 instances of WRITEFILE in pngtest.c. - Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory. - Updated png.rc in dll/msvc project - Revised makefile.dec to define and use LIBPATH and INCPATH - Increased size of global png_libpng_ver[] array from 12 to 18 chars. - Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const. - Removed duplicate png_crc_finish() from png_handle_bKGD() function. - Added a warning when application calls png_read_update_info() multiple times. - Revised makefile.cygwin - Fixed bugs in iCCP support in pngrutil.c and pngwutil.c. - Replaced png_set_empty_plte_permitted() with png_permit_mng_features(). -version 1.0.9beta2 [November 19, 2000] - Renamed the "dll" subdirectory "projects". - Added borland project files to "projects" subdirectory. - Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate. - Add error message in png_set_compression_buffer_size() when malloc fails. -version 1.0.9beta3 [November 23, 2000] - Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project. - Removed the png_flush() in pngwrite.c that crashes some applications - that don't set png_output_flush_fn. - Added makefile.macosx and makefile.aix to scripts directory. -version 1.0.9beta4 [December 1, 2000] - Change png_chunk_warning to png_warning in png_check_keyword(). - Increased the first part of msg buffer from 16 to 18 in png_chunk_error(). -version 1.0.9beta5 [December 15, 2000] - Added support for filter method 64 (for PNG datastreams embedded in MNG). -version 1.0.9beta6 [December 18, 2000] - Revised png_set_filter() to accept filter method 64 when appropriate. - Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to - help prevent applications from using MNG features in PNG datastreams. - Added png_permit_mng_features() function. - Revised libpng.3/libpng.txt. Changed "filter type" to "filter method". -version 1.0.9rc1 [December 23, 2000] - Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c - Fixed error handling of unknown compression type in png_decompress_chunk(). - In pngconf.h, define __cdecl when _MSC_VER is defined. -version 1.0.9beta7 [December 28, 2000] - Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places. - Revised memory management in png_set_hIST and png_handle_hIST in a backward - compatible manner. PLTE and tRNS were revised similarly. - Revised the iCCP chunk reader to ignore trailing garbage. -version 1.0.9beta8 [January 12, 2001] - Moved pngasmrd.h into pngconf.h. - Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop. -version 1.0.9beta9 [January 15, 2001] - Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to - wince and msvc project module definition files. - Minor revision of makefile.cygwin. - Fixed bug with progressive reading of narrow interlaced images in pngpread.c -version 1.0.9beta10 [January 16, 2001] - Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined. - Fixed "png_mmx_supported" typo in project definition files. -version 1.0.9beta11 [January 19, 2001] - Updated makefile.sgi to make shared library. - Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED - by default, for the benefit of DLL forward compatibility. These will - be re-enabled in version 1.2.0. -version 1.0.9rc2 [January 22, 2001] - Revised cygwin support. - -version 1.0.9 [January 31, 2001] - Added check of cygwin's ALL_STATIC in pngconf.h - Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos. -version 1.0.10beta1 [March 14, 2001] - Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc. - Reformatted libpng.3 to eliminate bad line breaks. - Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c - Added prototype for png_mmx_support() near the top of pnggccrd.c - Moved some error checking from png_handle_IHDR to png_set_IHDR. - Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros. - Revised png_mmx_support() function in pnggccrd.c - Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c - Fixed memory leak in contrib/visupng/PngFile.c - Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version) - Added warnings when retrieving or setting gamma=0. - Increased the first part of msg buffer from 16 to 18 in png_chunk_warning(). -version 1.0.10rc1 [March 23, 2001] - Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy, - and png_strlen. - Revised png_mmx_supported() function in pnggccrd.c to return proper value. - Fixed bug in progressive reading (pngpread.c) with small images (height < 8). - -version 1.0.10 [March 30, 2001] - Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin - Added beos project files (Chris Herborth) -version 1.0.11beta1 [April 3, 2001] - Added type casts on several png_malloc() calls (Dimitri Papadapoulos). - Removed a no-longer needed AIX work-around from pngconf.h - Changed several "//" single-line comments to C-style in pnggccrd.c -version 1.0.11beta2 [April 11, 2001] - Removed PNGAPI from several functions whose prototypes did not have PNGAPI. - Updated scripts/pngos2.def -version 1.0.11beta3 [April 14, 2001] - Added checking the results of many instances of png_malloc() for NULL -version 1.0.11beta4 [April 20, 2001] - Undid the changes from version 1.0.11beta3. Added a check for NULL return - from user's malloc_fn(). - Removed some useless type casts of the NULL pointer. - Added makefile.netbsd - -version 1.0.11 [April 27, 2001] - Revised makefile.netbsd -version 1.0.12beta1 [May 14, 2001] - Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot) - Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h - Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings. - Eliminated the png_error about apps using png_read|write_init(). Instead, - libpng will reallocate the png_struct and info_struct if they are too small. - This retains future binary compatibility for old applications written for - libpng-0.88 and earlier. -version 1.2.0beta1 [May 6, 2001] - Bumped DLLNUM to 2. - Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED - by default. - Added runtime selection of MMX features. - Added png_set_strip_error_numbers function and related macros. -version 1.2.0beta2 [May 7, 2001] - Finished merging 1.2.0beta1 with version 1.0.11 - Added a check for attempts to read or write PLTE in grayscale PNG datastreams. -version 1.2.0beta3 [May 17, 2001] - Enabled user memory function by default. - Modified png_create_struct so it passes user mem_ptr to user memory allocator. - Increased png_mng_features flag from png_byte to png_uint_32. - Bumped shared-library (so-number) and dll-number to 3. -version 1.2.0beta4 [June 23, 2001] - Check for missing profile length field in iCCP chunk and free chunk_data - in case of truncated iCCP chunk. - Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc - Bumped dll-number from 2 to 3 in makefile.cygwin - Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly - if user attempts to run it on an 8-bit display. - Updated contrib/gregbook - Use png_malloc instead of png_zalloc to allocate palette in pngset.c - Updated makefile.ibmc - Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes - of png_write_oFFS width and height from png_uint_32 to png_int_32. - Updated example.c - Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c -version 1.2.0beta5 [August 8, 2001] - Revised contrib/gregbook - Revised makefile.gcmmx - Revised pnggccrd.c to conditionally compile some thread-unsafe code only - when PNG_THREAD_UNSAFE_OK is defined. - Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with - value exceeding 2^bit_depth-1 - Revised makefile.sgi and makefile.sggcc - Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c - Removed restriction that do_invert_mono only operate on 1-bit opaque files - -version 1.2.0 [September 1, 2001] - Changed a png_warning() to png_debug() in pnggccrd.c - Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC(). -version 1.2.1beta1 [October 19, 2001] - Revised makefile.std in contrib/pngminus - Include background_1 in png_struct regardless of gamma support. - Revised makefile.netbsd and makefile.macosx, added makefile.darwin. - Revised example.c to provide more details about using row_callback(). -version 1.2.1beta2 [October 25, 2001] - Added type cast to each NULL appearing in a function call, except for - WINCE functions. - Added makefile.so9. -version 1.2.1beta3 [October 27, 2001] - Removed type casts from all NULLs. - Simplified png_create_struct_2(). -version 1.2.1beta4 [November 7, 2001] - Revised png_create_info_struct() and png_creat_struct_2(). - Added error message if png_write_info() was omitted. - Type cast NULLs appearing in function calls when _NO_PROTO or - PNG_TYPECAST_NULL is defined. -version 1.2.1rc1 [November 24, 2001] - Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL - is defined. - Changed typecast of "size" argument to png_size_t in pngmem.c calls to - the user malloc_fn, to agree with the prototype in png.h - Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev) - Updated makefile.sgi to recognize LIBPATH and INCPATH. - Updated various makefiles so "make clean" does not remove previous major - version of the shared library. -version 1.2.1rc2 [December 4, 2001] - Always allocate 256-entry internal palette, hist, and trans arrays, to - avoid out-of-bounds memory reference caused by invalid PNG datastreams. - Added a check for prefix_length > data_length in iCCP chunk handler. - -version 1.2.1 [December 7, 2001] - None. -version 1.2.2beta1 [February 22, 2002] - Fixed a bug with reading the length of iCCP profiles (Larry Reeves). - Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate - libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h - Revised makefile.darwin to remove "-undefined suppress" option. - Added checks for gamma and chromaticity values over 21474.83, which exceed - the limit for PNG unsigned 32-bit integers when encoded. - Revised calls to png_create_read_struct() and png_create_write_struct() - for simpler debugging. - Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK) -version 1.2.2beta2 [February 23, 2002] - Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths. - Check for invalid image dimensions in png_get_IHDR. - Added missing "fi;" in the install target of the SGI makefiles. - Added install-static to all makefiles that make shared libraries. - Always do gamma compensation when image is partially transparent. -version 1.2.2beta3 [March 7, 2002] - Compute background.gray and background_1.gray even when color_type is RGB - in case image gets reduced to gray later. - Modified shared-library makefiles to install pkgconfig/libpngNN.pc. - Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown - Removed unused png_write_destroy_info prototype from png.h - Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case - Added install-shared target to all makefiles that make shared libraries. - Stopped a double free of palette, hist, and trans when not using free_me. - Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64. -version 1.2.2beta4 [March 8, 2002] - Compute background.gray and background_1.gray even when color_type is RGB - in case image gets reduced to gray later (Jason Summers). - Relocated a misplaced /bin/rm in the "install-shared" makefile targets - Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library. -version 1.2.2beta5 [March 26, 2002] - Added missing PNGAPI to several function definitions. - Check for invalid bit_depth or color_type in png_get_IHDR(), and - check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen). - Revised iTXt support to accept NULL for lang and lang_key. - Compute gamma for color components of background even when color_type is gray. - Changed "()" to "{}" in scripts/libpng.pc.in. - Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN - Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so -version 1.2.2beta6 [March 31, 2002] -version 1.0.13beta1 [March 31, 2002] - Prevent png_zalloc() from trying to memset memory that it failed to acquire. - Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate). - Ensure that the right function (user or default) is used to free the - png_struct after an error in png_create_read_struct_2(). -version 1.2.2rc1 [April 7, 2002] -version 1.0.13rc1 [April 7, 2002] - Save the ebx register in pnggccrd.c (Sami Farin) - Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner). - Updated makefiles to put headers in include/libpng and remove old include/*.h. - -version 1.2.2 [April 15, 2002] -version 1.0.13 [April 15, 2002] - Revised description of png_set_filter() in libpng.3/libpng.txt. - Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd -version 1.0.13patch01 [April 17, 2002] -version 1.2.2patch01 [April 17, 2002] - Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and makefile.sggcc - Fixed VER -> PNGVER typo in makefile.macosx and added install-static to install - Added install: target to makefile.32sunu and makefile.64sunu -version 1.0.13patch03 [April 18, 2002] -version 1.2.2patch03 [April 18, 2002] - Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng - subdirectory to libpngNN subdirectory without the full pathname. - Moved generation of libpng.pc from "install" to "all" in 15 makefiles. -version 1.2.3rc1 [April 28, 2002] - Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos). - Added $(DESTDIR) feature to 24 makefiles (Tim Mooney) - Fixed bug with $prefix, should be $(prefix) in makefile.hpux. - Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin - Added a link from libpngNN.pc to libpng.pc in 15 makefiles. - Added links from include/libpngNN/*.h to include/*.h in 24 makefiles. - Revised makefile.darwin to make relative links without full pathname. - Added setjmp() at the end of png_create_*_struct_2() in case user forgets - to put one in their application. - Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and - removed them from module definition files. -version 1.2.3rc2 [May 1, 2002] - Fixed bug in reporting number of channels in pngget.c and pngset.c, - that was introduced in version 1.2.2beta5. - Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(), - png_default_flush(), and png_push_fill_buffer() and included them in - module definition files. - Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles. -version 1.2.3rc3 [May 1, 2002] - Revised prototype for png_default_flush() - Remove old libpng.pc and libpngNN.pc before installing new ones. -version 1.2.3rc4 [May 2, 2002] - Typos in *.def files (png_default_read|write -> png_default_read|write_data) - In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc - Added libpng-config and libpngNN-config and modified makefiles to install them. - Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles - Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp -version 1.2.3rc5 [May 11, 2002] - Changed "error" and "message" in prototypes to "error_message" and - "warning_message" to avoid namespace conflict. - Revised 15 makefiles to build libpng-config from libpng-config-*.in - Once more restored png_zalloc and png_zfree to regular nonexported form. - Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer - to nonexported form, but with PNGAPI, and removed them from module def files. -version 1.2.3rc6 [May 14, 2002] - Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c - Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp. - Removed leftover libpng-config "sed" script from four makefiles. - Revised libpng-config creating script in 16 makefiles. - -version 1.2.3 [May 22, 2002] - Revised libpng-config target in makefile.cygwin. - Removed description of png_set_mem_fn() from documentation. - Revised makefile.freebsd. - Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR). - Revised projects/msvc/README.txt - Changed -lpng to -lpngNN in LDFLAGS in several makefiles. -version 1.2.4beta1 [May 24, 2002] - Added libpng.pc and libpng-config to "all:" target in 16 makefiles. - Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH) - Added missing "\" before closing double quote in makefile.gcmmx. - Plugged various memory leaks; added png_malloc_warn() and png_set_text_2() - functions. -version 1.2.4beta2 [June 25, 2002] - Plugged memory leak of png_ptr->current_text (Matt Holgate). - Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison) - Added -soname to the loader flags in makefile.dec, makefile.sgi, and - makefile.sggcc. - Added "test-installed" target to makefile.linux, makefile.gcmmx, - makefile.sgi, and makefile.sggcc. -version 1.2.4beta3 [June 28, 2002] - Plugged memory leak of row_buf in pngtest.c when there is a png_error(). - Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data. - Added "test-installed" target to makefile.32sunu, makefile.64sunu, - makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, - makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9. -version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002] - Added "test-installed" target to makefile.cygwin and makefile.sco. - Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro. - -version 1.2.4 and 1.0.14 [July 8, 2002] - Changed png_warning() to png_error() when width is too large to process. -version 1.2.4patch01 [July 20, 2002] - Revised makefile.cygwin to use DLL number 12 instead of 13. -version 1.2.5beta1 [August 6, 2002] - Added code to contrib/gregbook/readpng2.c to ignore unused chunks. - Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11) - Removed some stray *.o files from contrib/gregbook. - Changed png_error() to png_warning() about "Too much data" in pngpread.c - and about "Extra compressed data" in pngrutil.c. - Prevent png_ptr->pass from exceeding 7 in png_push_finish_row(). - Updated makefile.hpgcc - Updated png.c and pnggccrd.c handling of return from png_mmx_support() -version 1.2.5beta2 [August 15, 2002] - Only issue png_warning() about "Too much data" in pngpread.c when avail_in - is nonzero. - Updated makefiles to install a separate libpng.so.3 with its own rpath. -version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002] - Revised makefiles to not remove previous minor versions of shared libraries. -version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002] - Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared - library loader directive. - Added missing "$OBJSDLL" line to makefile.gcmmx. - Added missing "; fi" to makefile.32sunu. -version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002] - Revised libpng-config script. - -version 1.2.5 and 1.0.15 [October 3, 2002] - Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux, - and makefile.aix. - Relocated two misplaced PNGAPI lines in pngtest.c -version 1.2.6beta1 [October 22, 2002] - Commented out warning about uninitialized mmx_support in pnggccrd.c. - Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h. - Relocated two more misplaced PNGAPI lines in pngtest.c - Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams, - introduced in version 1.0.2. - Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu. -version 1.2.6beta2 [November 1, 2002] - Added libpng-config "--ldopts" output. - Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)" - in makefiles. -version 1.2.6beta3 [July 18, 2004] - Reverted makefile changes from version 1.2.6beta2 and some of the changes - from version 1.2.6beta1; these will be postponed until version 1.2.7. - Version 1.2.6 is going to be a simple bugfix release. - Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile. - Fixed potential overrun in pngerror.c by using strncpy instead of memcpy. - Added "#!/bin/sh" at the top of configure, for recognition of the - 'x' flag under Cygwin (Cosmin). - Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin). - Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin). - Fixed the special memory handler for Borland C under DOS, in pngmem.c - (Cosmin). - Removed some spurious assignments in pngrutil.c (Cosmin). - Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings - on 16-bit platforms (Cosmin). - Enclosed shift op expressions in parentheses, to silence warnings (Cosmin). - Used proper type png_fixed_point, to avoid problems on 16-bit platforms, - in png_handle_sRGB() (Cosmin). - Added compression_type to png_struct, and optimized the window size - inside the deflate stream (Cosmin). - Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin). - Fixed handling of unknown chunks that come after IDAT (Cosmin). - Allowed png_error() and png_warning() to work even if png_ptr == NULL - (Cosmin). - Replaced row_info->rowbytes with row_bytes in png_write_find_filter() - (Cosmin). - Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre). - Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded - values in png.c (Simon-Pierre, Cosmin). - Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre). - Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc - (Simon-Pierre). - Moved the definition of PNG_HEADER_VERSION_STRING near the definitions - of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin). - Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin). - Updated scripts/makefile.vc(a)win32 (Cosmin). - Updated the MSVC project (Simon-Pierre, Cosmin). - Updated the Borland C++ Builder project (Cosmin). - Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin). - Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin). - Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin). - Added extra guard around inclusion of Turbo C memory headers, in pngconf.h - (Cosmin). - Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to - projects/cbuilder5/ (Cosmin). - Moved projects/visualc6/png32ms.def to scripts/pngw32.def, - and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin). - Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin). - Changed line endings to DOS style in cbuilder5 and visualc6 files, even - in the tar.* distributions (Cosmin). - Updated contrib/visupng/VisualPng.dsp (Cosmin). - Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin). - Added a separate distribution with "configure" and supporting files (Junichi). -version 1.2.6beta4 [July 28, 2004] - Added user ability to change png_size_t via a PNG_SIZE_T macro. - Added png_sizeof() and png_convert_size() functions. - Added PNG_SIZE_MAX (maximum value of a png_size_t variable. - Added check in png_malloc_default() for (size_t)size != (png_uint_32)size - which would indicate an overflow. - Changed sPLT failure action from png_error to png_warning and abandon chunk. - Changed sCAL and iCCP failures from png_error to png_warning and abandon. - Added png_get_uint_31(png_ptr, buf) function. - Added PNG_UINT_32_MAX macro. - Renamed PNG_MAX_UINT to PNG_UINT_31_MAX. - Made png_zalloc() issue a png_warning and return NULL on potential - overflow. - Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x - Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4. - Revised Borland portion of png_malloc() to return NULL or issue - png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK. - Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove - sequential read support. - Added some "#if PNG_WRITE_SUPPORTED" blocks. - Removed some redundancy with #ifdef/#endif in png_malloc_default(). - Use png_malloc instead of png_zalloc to allocate the pallete. -version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004] - Fixed buffer overflow vulnerability in png_handle_tRNS() - Fixed integer arithmetic overflow vulnerability in png_read_png(). - Fixed some harmless bugs in png_handle_sBIT, etc, that would cause - duplicate chunk types to go undetected. - Fixed some timestamps in the -config version - Rearranged order of processing of color types in png_handle_tRNS(). - Added ROWBYTES macro to calculate rowbytes without integer overflow. - Updated makefile.darwin and removed makefile.macosx from scripts directory. - Imposed default one million column, one-million row limits on the image - dimensions, and added png_set_user_limits() function to override them. - Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro. - Fixed wrong cast of returns from png_get_user_width|height_max(). - Changed some "keep the compiler happy" from empty statements to returns, - Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution -version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004] - Revised makefile.darwin and makefile.solaris. Removed makefile.macosx. - Revised pngtest's png_debug_malloc() to use png_malloc() instead of - png_malloc_default() which is not supposed to be exported. - Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in - pngpread.c. Bug was introduced in 1.2.6rc1. - Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1. - Fixed old bug in RGB to Gray transformation. - Fixed problem with 64-bit compilers by casting arguments to abs() - to png_int_32. - Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9). - Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin) - Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles. - Added code to update the row_info->colortype in png_do_read_filler() (MSB). -version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004] - Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid - trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro. - Revised documentation of png_set_keep_unknown_chunks(). - Check handle_as_unknown status in pngpread.c, as in pngread.c previously. - Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h - Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c -version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004] - Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of - "pinfo" was out of place). -version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004] - Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED - section of png.h where they were inadvertently placed in version rc3. - -version 1.2.6 and 1.0.16 [August 15, 2004] - Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1. -version 1.2.7beta1 [August 26, 2004] - Removed unused pngasmrd.h file. - Removed references to uu.net for archived files. Added references to - PNG Spec (second edition) and the PNG ISO/IEC Standard. - Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR. - Fixed bug with "optimized window size" in the IDAT datastream, that - causes libpng to write PNG files with incorrect zlib header bytes. -version 1.2.7beta2 [August 28, 2004] - Fixed bug with sCAL chunk and big-endian machines (David Munro). - Undid new code added in 1.2.6rc2 to update the color_type in - png_set_filler(). - Added png_set_add_alpha() that updates color type. -version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004] - Revised png_set_strip_filler() to not remove alpha if color_type has alpha. - -version 1.2.7 and 1.0.17 [September 12, 2004] - Added makefile.hp64 - Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin -version 1.2.8beta1 [November 1, 2004] - Fixed bug in png_text_compress() that would fail to complete a large block. - Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during - strip alpha operation in png_do_strip_filler(). - Added PNG_1_2_X definition in pngconf.h - Comment out with #ifdef/#endif png_info_init in png.c and png_read_init - in pngread.c (as of 1.3.0) -version 1.2.8beta2 [November 2, 2004] - Reduce color_type to a nonalpha type after strip alpha operation in - png_do_strip_filler(). -version 1.2.8beta3 [November 3, 2004] - Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM -version 1.2.8beta4 [November 12, 2004] - Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin). - Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin). - Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection - of data type in deflate (Cosmin). - Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of - PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. -version 1.2.8beta5 [November 20, 2004] - Use png_ptr->flags instead of png_ptr->transformations to pass - PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI - compatibility. - Revised handling of SPECIALBUILD, PRIVATEBUILD, - PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. -version 1.2.8rc1 [November 24, 2004] - Moved handling of BUILD macros from pngconf.h to png.h - Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently - omitted from beta5. - Revised scripts/pngw32.rc - Despammed mailing addresses by masking "@" with "at". - Inadvertently installed a supposedly faster test version of pngrutil.c -version 1.2.8rc2 [November 26, 2004] - Added two missing "\" in png.h - Change tests in pngread.c and pngpread.c to - if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) - png_do_read_transformations(png_ptr); -version 1.2.8rc3 [November 28, 2004] - Reverted pngrutil.c to version libpng-1.2.8beta5. - Added scripts/makefile.elf with supporting code in pngconf.h for symbol - versioning (John Bowler). -version 1.2.8rc4 [November 29, 2004] - Added projects/visualc7 (Simon-pierre). -version 1.2.8rc5 [November 29, 2004] - Fixed new typo in scripts/pngw32.rc - -version 1.2.8 [December 3, 2004] - Removed projects/visualc7, added projects/visualc71. - -version 1.2.9beta1 [February 21, 2006] - - Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints - Revised man page and libpng.txt to make it clear that one should not call - png_read_end or png_write_end after png_read_png or png_write_png. - Updated references to png-mng-implement mailing list. - Fixed an incorrect typecast in pngrutil.c - Added PNG_NO_READ_SUPPORTED conditional for making a write-only library. - Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional. - Optimized alpha-inversion loops in pngwtran.c - Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c - Make sure num_trans is <= 256 before copying data in png_set_tRNS(). - Make sure num_palette is <= 256 before copying data in png_set_PLTE(). - Interchanged order of write_swap_alpha and write_invert_alpha transforms. - Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin). - Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin). - Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin). - Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16, - png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin). - Added type cast (png_byte) in png_write_sCAL() (Cosmin). - Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin). - Default iTXt support was inadvertently enabled. - -version 1.2.9beta2 [February 21, 2006] - - Check for png_rgb_to_gray and png_gray_to_rgb read transformations before - checking for png_read_dither in pngrtran.c - Revised checking of chromaticity limits to accommodate extended RGB - colorspace (John Denker). - Changed line endings in some of the project files to CRLF, even in the - "Unix" tar distributions (Cosmin). - Made png_get_int_32 and png_save_int_32 always available (Cosmin). - Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def - with the newly exported functions. - Eliminated distributions without the "configure" script. - Updated INSTALL instructions. - -version 1.2.9beta3 [February 24, 2006] - - Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp - Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler) - Removed reference to pngasmrd.h from Makefile.am - Renamed CHANGES to ChangeLog. - Renamed LICENSE to COPYING. - Renamed ANNOUNCE to NEWS. - Created AUTHORS file. - -version 1.2.9beta4 [March 3, 2006] - - Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac - Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING. - Removed newline from the end of some error and warning messages. - Removed test for sqrt() from configure.ac and configure. - Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix). - Disabled default iTXt support that was inadvertently enabled in - libpng-1.2.9beta1. - Added "OS2" to list of systems that don't need underscores, in pnggccrd.c - Removed libpng version and date from *.c files. - -version 1.2.9beta5 [March 4, 2006] - Removed trailing blanks from source files. - Put version and date of latest change in each source file, and changed - copyright year accordingly. - More cleanup of configure.ac, Makefile.ac, and associated scripts. - Restored scripts/makefile.elf which was inadvertently deleted. - -version 1.2.9beta6 [March 6, 2006] - Fixed typo (RELEASE) in configuration files. - -version 1.2.9beta7 [March 7, 2006] - Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am - Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s() - in png.h. - Updated makefile.elf as suggested by debian. - Made cosmetic changes to some makefiles, adding LN_SF and other macros. - Made some makefiles accept "exec_prefix". - -version 1.2.9beta8 [March 9, 2006] - Fixed some "#if defined (..." which should be "#if defined(..." - Bug introduced in libpng-1.2.8. - Fixed inconsistency in definition of png_default_read_data() - Restored blank that was lost from makefile.sggcc "clean" target in beta7. - Revised calculation of "current" and "major" for irix in ltmain.sh - Changed "mkdir" to "MKDIR_P" in some makefiles. - Separated PNG_EXPAND and PNG_EXPAND_tRNS. - Added png_set_expand_gray_1_2_4_to_8() and deprecated - png_set_gray_1_2_4_to_8() which also expands tRNS to alpha. - -version 1.2.9beta9 [March 10, 2006] - Include "config.h" in pngconf.h when available. - Added some checks for NULL png_ptr or NULL info_ptr (timeless) - -version 1.2.9beta10 [March 20, 2006] - Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin) - Made pnggccrd.c PIC-compliant (Christian Aichinger). - Added makefile.mingw (Wolfgang Glas). - Revised pngconf.h MMX checking. - -version 1.2.9beta11 [March 22, 2006] - Fixed out-of-order declaration in pngwrite.c that was introduced in beta9 - Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros. - -version 1.2.9rc1 [March 31, 2006] - Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin). - Removed nonsensical assertion check from pngtest.c (Cosmin). - -version 1.2.9 [April 14, 2006] - Revised makefile.beos and added "none" selector in ltmain.sh - -version 1.2.10beta1 [April 15, 2006] - Renamed "config.h" to "png_conf.h" and revised Makefile.am to add - -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h - to include png_conf.h only when PNG_BUILDING_LIBPNG is defined. - -version 1.2.10beta2 [April 15, 2006] - Manually updated Makefile.in and configure. Changed png_conf.h.in - back to config.h. - -version 1.2.10beta3 [April 15, 2006] - Change png_conf.h back to config.h in pngconf.h. - -version 1.2.10beta4 [April 16, 2006] - Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*. - -version 1.2.10beta5 [April 16, 2006] - Added a configure check for compiling assembler code in pnggccrd.c - -version 1.2.10beta6 [April 17, 2006] - Revised the configure check for pnggccrd.c - Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@ - Added @LIBPNG_DEFINES@ to arguments when building libpng.sym - -version 1.2.10beta7 [April 18, 2006] - Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles. - -version 1.2.10rc1 [April 19, 2006] - Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD - Fixed "LN_FS" typo in makefile.sco and makefile.solaris. - -version 1.2.10rc2 [April 20, 2006] - Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE - in configure.ac and configure - Made the configure warning about versioned symbols less arrogant. - -version 1.2.10rc3 [April 21, 2006] - Added a note in libpng.txt that png_set_sig_bytes(8) can be used when - writing an embedded PNG without the 8-byte signature. - Revised makefiles and configure to avoid making links to libpng.so.* - -version 1.2.10 [April 23, 2006] - Reverted configure to "rc2" state. - -version 1.2.11beta1 [May 31, 2006] - scripts/libpng.pc.in contained "configure" style version info and would - not work with makefiles. - The shared-library makefiles were linking to libpng.so.0 instead of - libpng.so.3 compatibility as the library. - -version 1.2.11beta2 [June 2, 2006] - Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid - buffer overflow. - Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb) - -version 1.2.11beta3 [June 5, 2006] - Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin). - Removed the accidental leftover Makefile.in~ (Cosmin). - Avoided potential buffer overflow and optimized buffer in - png_write_sCAL(), png_write_sCAL_s() (Cosmin). - Removed the include directories and libraries from CFLAGS and LDFLAGS - in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin). - -version 1.2.11beta4 [June 6, 2006] - Allow zero-length IDAT chunks after the entire zlib datastream, but not - after another intervening chunk type. - -version 1.0.19rc1, 1.2.11rc1 [June 13, 2006] - Deleted extraneous square brackets from [config.h] in configure.ac - -version 1.0.19rc2, 1.2.11rc2 [June 14, 2006] - Added prototypes for PNG_INCH_CONVERSIONS functions to png.h - Revised INSTALL and autogen.sh - Fixed typo in several makefiles (-W1 should be -Wl) - Added typedef for png_int_32 and png_uint_32 on 64-bit systems. - -version 1.0.19rc3, 1.2.11rc3 [June 15, 2006] - Removed the new typedefs for 64-bit systems (delay until version 1.4.0) - Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid - reading out of bounds. - -version 1.0.19rc4, 1.2.11rc4 [June 15, 2006] - Really removed the new typedefs for 64-bit systems. - -version 1.0.19rc5, 1.2.11rc5 [June 22, 2006] - Removed png_sig_bytes entry from scripts/pngw32.def - -version 1.0.19, 1.2.11 [June 26, 2006] - None. - -version 1.0.20, 1.2.12 [June 27, 2006] - Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid - buffer overflow. - -version 1.2.13beta1 [October 2, 2006] - Removed AC_FUNC_MALLOC from configure.ac - Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h - Change "logical" to "bitwise" throughout documentation. - Detect and fix attempt to write wrong iCCP profile length. - -version 1.0.21, 1.2.13 [November 14, 2006] - Fix potential buffer overflow in sPLT chunk handler. - Fix Makefile.am to not try to link to noexistent files. - Check all exported functions for NULL png_ptr. - -version 1.2.14beta1 [November 17, 2006] - Relocated three misplaced tests for NULL png_ptr. - Built Makefile.in with automake-1.9.6 instead of 1.9.2. - Build configure with autoconf-2.60 instead of 2.59 - -version 1.2.14beta2 [November 17, 2006] - Added some typecasts in png_zalloc(). - -version 1.2.14rc1 [November 20, 2006] - Changed "strtod" to "png_strtod" in pngrutil.c - -version 1.0.22, 1.2.14 [November 27, 2006] - Added missing "$(srcdir)" in Makefile.am and Makefile.in - -version 1.2.15beta1 [December 3, 2006] - Generated configure with autoconf-2.61 instead of 2.60 - Revised configure.ac to update libpng.pc and libpng-config. - -version 1.2.15beta2 [December 3, 2006] - Always export MMX asm functions, just stubs if not building pnggccrd.c - -version 1.2.15beta3 [December 4, 2006] - Add "png_bytep" typecast to profile while calculating length in pngwutil.c - -version 1.2.15beta4 [December 7, 2006] - Added scripts/CMakeLists.txt - Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta - -version 1.2.15beta5 [December 7, 2006] - Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c - Revised scripts/CMakeLists.txt - -version 1.2.15beta6 [December 13, 2006] - Revised scripts/CMakeLists.txt and configure.ac - -version 1.2.15rc1 [December 18, 2006] - Revised scripts/CMakeLists.txt - -version 1.2.15rc2 [December 21, 2006] - Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers. - Added scripts/makefile.nommx - -version 1.2.15rc3 [December 25, 2006] - Fixed shared library numbering error that was introduced in 1.2.15beta6. - -version 1.2.15rc4 [December 27, 2006] - Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set. - -version 1.2.15rc5 [December 31, 2006] - Revised handling of rgb_to_gray. - -version 1.0.23, 1.2.15 [January 5, 2007] - Added some (unsigned long) typecasts in pngtest.c to avoid printing errors. - -version 1.2.16beta1 [January 6, 2007] - Fix bugs in makefile.nommx - -version 1.2.16beta2 [January 16, 2007] - Revised scripts/CMakeLists.txt - -version 1.0.24, 1.2.16 [January 31, 2007] - No changes. - -version 1.2.17beta1 [March 6, 2007] - Revised scripts/CMakeLists.txt to install both shared and static libraries. - Deleted a redundant line from pngset.c. - -version 1.2.17beta2 [April 26, 2007] - Relocated misplaced test for png_ptr == NULL in pngpread.c - Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN - flags. - Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_* - Added pngerror() when write_IHDR fails in deflateInit2(). - Added "const" to some array declarations. - Mention examples of libpng usage in the libpng*.txt and libpng.3 documents. - -version 1.2.17rc1 [May 4, 2007] - No changes. - -version 1.2.17rc2 [May 8, 2007] - Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications - calling set_unknown_chunk_location() need them. - Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in - png_set_expand_gray_1_2_4_to_8(). - Added png_ptr->unknown_chunk to hold working unknown chunk data, so it - can be free'ed in case of error. Revised unknown chunk handling in - pngrutil.c and pngpread.c to use this structure. - -version 1.2.17rc3 [May 8, 2007] - Revised symbol-handling in configure script. - -version 1.2.17rc4 [May 10, 2007] - Revised unknown chunk handling to avoid storing unknown critical chunks. - -version 1.0.25 [May 15, 2007] -version 1.2.17 [May 15, 2007] - Added "png_ptr->num_trans=0" before error return in png_handle_tRNS, - to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664) - -version 1.0.26 [May 15, 2007] -version 1.2.18 [May 15, 2007] - Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script - -version 1.2.19beta1 [May 18, 2007] - Changed "const static" to "static PNG_CONST" everywhere, mostly undoing - change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST" - Changed some handling of unused parameters, to avoid compiler warnings. - "if (unused == NULL) return;" becomes "unused = unused". - -version 1.2.19beta2 [May 18, 2007] - Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier) - -version 1.2.19beta3 [May 19, 2007] - Add some "png_byte" typecasts in png_check_keyword() and write new_key - instead of key in zTXt chunk (Kevin Ryde). - -version 1.2.19beta4 [May 21, 2007] - Add png_snprintf() function and use it in place of sprint() for improved - defense against buffer overflows. - -version 1.2.19beta5 [May 21, 2007] - Fixed png_handle_tRNS() to only use the valid bits of tRNS value. - Changed handling of more unused parameters, to avoid compiler warnings. - Removed some PNG_CONST in pngwutil.c to avoid compiler warnings. - -version 1.2.19beta6 [May 22, 2007] - Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c - Added a special "_MSC_VER" case that defines png_snprintf to _snprintf - -version 1.2.19beta7 [May 22, 2007] - Squelched png_squelch_warnings() in pnggccrd.c and added - an #ifdef PNG_MMX_CODE_SUPPORTED/#endif block around the declarations - that caused the warnings that png_squelch_warnings was squelching. - -version 1.2.19beta8 [May 22, 2007] - Removed __MMX__ from test in pngconf.h. - -version 1.2.19beta9 [May 23, 2007] - Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro. - Revised png_squelch_warnings() so it might work. - Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86. - -version 1.2.19beta10 [May 24, 2007] - Resquelched png_squelch_warnings(), use "__attribute__((used))" instead. - -version 1.2.19beta11 [May 28, 2007] - Return 0 from png_get_sPLT() and png_get_unknown_chunks() if png_ptr is NULL; - changed three remaining instances of png_strcpy() to png_strncpy() (David - Hill). - Make test for NULL row_buf at the beginning of png_do_read_transformations - unconditional. - -version 1.2.19beta12 [May 28, 2007] - Revised pnggccrd.c. - -version 1.2.19beta13 [June 14, 2007] - Prefer PNG_USE_PNGVCRD when _MSC_VER is defined in pngconf.h - -version 1.2.19beta14 [June 16, 2007] - Fix bug with handling of 16-bit transparency, introduced in 1.2.19beta2 - -version 1.2.19beta15 [June 17, 2007] - Revised pnggccrd.c. - -version 1.2.19beta16 [June 18, 2007] - Revised pnggccrd.c again. - Updated contrib/gregbook. - Changed '#include "pnggccrd.c"' to 'include "$srcdir/pnggccrd.c"' - in configure.ac - -version 1.2.19beta17 [June 19, 2007] - Revised many of the makefiles, to set -DPNG_NO_MMX_CODE where needed - and to not use -O3 unless -DPNG_NO_MMX_CODE is also set. - -version 1.2.19beta18 [June 23, 2007] - Replaced some C++ style comments with C style comments in pnggccrd.c. - Copied optimized C code from pnggccrd.c to pngrutil.c, removed dependency - on pnggccrd.o from many makefiles. - Added sl and dylib to list of extensions be installed by Makefile.am - -version 1.2.19beta19 [June 28, 2007] - Fixed testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN in pngrtran.c - More cleanup of pnggccrd.c and pngvcrd.c - -version 1.2.19beta20 [June 29, 2007] - Rebuilt Makefile.in and configure using libtool-1.5.24. - Fixed typo in pnggccrd.c - -version 1.2.19beta21 [June 30, 2007] - More revision of pnggccrd.c - Added "test" target to Makefile.in and Makefile.am - -version 1.2.19beta22 [July 3, 2007] - Added info about pngrutil/pnggccrd/pngvcrd to png_get_header_version() - Fix type definition of dummy_value_a, b in pnggccrd.c - -version 1.2.19beta23 [July 10, 2007] - Revert change to type definition of dummy_value_a, b in pnggccrd.c - Make sure __PIC__ is defined in pnggccrd.c when PIC is defined. - Require gcc-4.1 or better to use PNG_HAVE_MMX_FILTER_ROW on x86_64 platforms - -version 1.2.19beta24 [July 14, 2007] - Added PNG_NO_READ_FILTER, PNG_NO_WRITE_FILTER, PNG_NO_WARNING macros. - Added contrib/pngminim to demonstrate building minimal encoder and decoder - -version 1.2.19beta25 [July 15, 2007] - Removed the new PNG_NO_READ_FILTER macro since it would make the library - unable to read valid PNG files, and filtering is at the heart of the - PNG format. - -version 1.2.19beta26 [July 16, 2007] - Changed "png_free(str)" to "png_free(png_ptr,str)" in pngrutil.c WinCE - code (Yves Piguet). This bug was introduced in libpng-1.2.14. - Updated scripts/CMakeLists.txt - Relocated a misplaced #endif in pnggccrd.c - -version 1.2.19beta27 [July 17, 2007] - Fixed incorrect stride and number of bytes copied (was 4 instead of - 6 bytes) in the cleanup loop of pnggccrd.c and pngvcrd.c for handling - the end of 48-bit interlaced rows (Glenn R-P). - -version 1.2.19beta28 [July 19, 2007] - Removed requirement for gcc-4.1 or better to use PNG_HAVE_MMX_FILTER_ROW - on x86_64 platforms - Added png_warning() in pngrutil.c for short iCCP, iTXt, sPLT, or zTXT chunks. - Revised pngtest.c so warnings are displayed regardless of PNG_NO_STDIO. - -version 1.2.19beta29 [July 20, 2007] - Fix typo in pnggccrd.c (%%eax should be %%ax in secondloop48) - -version 1.2.19beta30 [July 26, 2007] - Revised pnggccrd.c - -version 1.2.19beta31 [July 27, 2007] - Fix typos in pnggccrd.c - -version 1.0.27rc1 and 1.2.19rc1 [July 31, 2007] - Disable PNG_MMX_CODE_SUPPORTED when PNG_ASSEMBLER_CODE_SUPPORTED is off. - Enable PNG_MMX_READ_FILTER_* by default, except when gcc-3.x is being - used (they were inadvertently disabled in libpng-1.2.19beta23). - Fix some debugging statements in pnggccrd.c and pngrutil.c - Added information about disabling the MMX code in libpng documentation. - -version 1.0.27rc2 and 1.2.19rc2 [August 4, 2007] - Removed some "#if 0" blocks. - Made a global struct local in pngvcrd.c to make it thread safe. - Issue a png_error() if application attempts to transform a row tht - has not been initialized. - -version 1.0.27rc3 and 1.2.19rc3 [August 9, 2007] - Slightly revised pngvcrd.c - -version 1.0.27rc4 and 1.2.19rc4 [August 9, 2007] - Revised pnggccrd.c debugging change of rc1, which was broken. - Revised scripts/CMakeLists.txt - Change default to PNG_NO_GLOBAL_ARRAYS for MSVC. - Turn off PNG_FLAG_ROW_INIT flag when setting transforms that expand pixels. - -version 1.0.27rc5 and 1.2.19rc5 [August 10, 2007] - Fix typo (missing '"') in pnggccrd.c - Revise handling of png_strtod in recent versions of WINCE - -version 1.0.27rc6 and 1.2.19rc6 [August 15, 2007] - Fix typo (missing ',') in contrib/gregbook/readpng2.c - Undid row initialization error exit added to rc2 and rc4. - -version 1.0.27 and 1.2.19 [August 18, 2007] - Conditionally restored row initialization error exit. - -version 1.2.20beta01 [August 19, 2007] - Fixed problem with compiling pnggccrd.c on Intel-Apple platforms. - Changed png_malloc() to png_malloc_warn() in png_set_sPLT(). - Added PNG_NO_ERROR_TEXT feature, with demo in contrib/pngminim - Removed define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */ - because it caused some trouble. - -version 1.2.20beta02 [August 20, 2007] - Avoid compiling pnggccrd.c on Intel-Apple platforms. - -version 1.2.20beta03 [August 20, 2007] - Added "/D PNG_NO_MMX_CODE" to the non-mmx builds of projects/visualc6 - and visualc71. - -version 1.2.20beta04 [August 21, 2007] - Revised pngvcrd.c for improved efficiency (Steve Snyder). - -version 1.2.20rc1 [August 23, 2007] - Revised pngconf.h to set PNG_NO_MMX_CODE for gcc-3.x compilers. - -version 1.2.20rc2 [August 27, 2007] - Revised scripts/CMakeLists.txt - Revised #ifdefs to ensure one and only one of pnggccrd.c, pngvcrd.c, - or part of pngrutil.c is selected. - -version 1.2.20rc3 [August 30, 2007] - Remove a little more code in pngwutil.c when PNG_NO_WRITE_FILTER is selected. - Added /D _CRT_SECURE_NO_WARNINGS to visual6c and visualc71 projects. - Compile png_mmx_support() in png.c even when PNG_NO_MMX_CODE is defined. - Restored a "superfluous" #ifdef that was removed from 1.2.20rc2 pnggccrd.c, - breaking the png_mmx_support() function. - -version 1.2.20rc4 [September 1, 2007] - Removed Intel contributions (MMX, Optimized C). - -version 1.2.20rc5 [September 2, 2007] - Restored configure and Makefile.in to rc3 and put a snippet of code in - pnggccrd.c, to ensure configure makes the same PNG_NO_MMX_CODE selection - -version 1.2.20rc6 [September 2, 2007] - Fixed bugs in scripts/CMakeLists.txt - Removed pngvcrd.c references from msvc projects. - -version 1.0.28 and 1.2.20 [September 8, 2007] - Removed "(NO READ SUPPORT)" from png_get_header_version() string. - -version 1.2.21beta1 [September 14, 2007] - Fixed various mistakes reported by George Cook and Jeff Phillips: - logical vs bitwise NOT in pngrtran.c, bug introduced in 1.2.19rc2 - 16-bit cheap transparency expansion, bug introduced in 1.2.19beta2 - errors with sizeof(unknown_chunk.name), bugs introduced in 1.2.19beta11 - <= compare with unsigned var in pngset.c, should be ==. - -version 1.2.21beta2 [September 18, 2007] - Removed some extraneous typecasts. - -version 1.2.21rc1 [September 25, 2007] - Fixed potential out-of-bounds reads in png_handle_pCAL() and - png_handle_ztXt() ("flayer" results reported by Tavis Ormandy). - -version 1.2.21rc2 [September 26, 2007] - Fixed potential out-of-bounds reads in png_handle_sCAL(), - png_handle_iTXt(), and png_push_read_tEXt(). - Remove some PNG_CONST declarations from pngwutil.c to avoid compiler warnings - Revised makefiles to update paths in libpng.pc properly. - -version 1.2.21rc3 [September 27, 2007] - Revised makefiles to update "Libs" in libpng.pc properly. - -version 1.0.29 and 1.2.21rc3 [October 4, 2007] - No changes. - -version 1.2.22beta1 [October 4, 2007] - Again, fixed logical vs bitwise NOT in pngrtran.c, bug introduced - in 1.2.19rc2 - -version 1.2.22beta2 [October 5, 2007] - Fixed string length error in pngset.c (caused crashes while decoding iCCP) - Add terminating NULL after each instance of png_strncpy(). - -version 1.2.22beta3 [October 6, 2007] - Fix two off-by-one terminating NULL after png_strncpy(). - -version 1.2.22beta4 [October 7, 2007] - Changed some 0 to '\0'. - -version 1.0.30rc1 and 1.2.22rc1 [October 8, 2007] - No changes. - -version 1.0.30 and 1.2.22 [October 13, 2007] - No changes. - -version 1.2.23beta01 [October 15, 2007] - Reduced number of invocations of png_strlen() in pngset.c. - Changed [azAZ09_] to [_abcde...89] in Makefile.am for better localization. - -version 1.2.23beta02 [October 16, 2007] - Eliminated png_strncpy() and png_strcpy() (Pierre Poissinger) - Changed $AN to $(AN) in Makefile.am. - -version 1.2.23beta03 [October 16, 2007] - Fixed off-by-one error in pngset.c - Restore statement to set last character of buffer to \0 in pngerror.c - -version 1.2.23beta04 [October 23, 2007] - Reject attempt to set all-zero cHRM values. - -version 1.2.23beta05 [October 26, 2007] - Add missing quotes in projects/visualc6, lost in version 1.2.20rc3 - -version 1.2.23rc01 [November 2, 2007] - No changes. - -version 1.2.23 [November 6, 2007] - No changes. - -version 1.2.24beta01 [November 19, 2007] - Moved misplaced test for malloc failure in png_set_sPLT(). This bug was - introduced in libpng-1.2.20beta01. - Ifdef out avg_row etc from png.h and pngwrite.c when PNG_NO_WRITE_FILTER - Do not use png_ptr->free_fn and png_ptr->mem_fn in png_destroy_read_struct() - when png_ptr is NULL (Marshall Clow). - Updated handling of symbol prefixes in Makefile.am and configure.ac (Mike - Frysinger). - -version 1.2.24beta02 [November 30, 2007] - Removed a useless test and fixed incorrect test in png_set_cHRM_fixed() - (David Hill). - -version 1.2.24rc01 [December 7, 2007] - No changes. - -version 1.2.24 [December 14, 2007] - Make sure not to redefine _BSD_SOURCE in pngconf.h - Revised gather.sh and makefile.std in contrib/pngminim to avoid compiling - unused files. - -version 1.2.25beta01 [January 7, 2008] - Fixed bug with unknown chunk handling, introduced in version 1.2.17rc2 - -version 1.2.25beta02 [January 10, 2008] - Prevent gamma from being applied twice. - -version 1.2.25rc01 [January 17, 2008] - No changes. - -version 1.2.25beta03 [January 22, 2008] - Fixed some continue-after-malloc-failure errors in pngset.c (David Hill) - Check for info_ptr == NULL in png_read_info() and png_process_data(). - Check for possible use of NULL user_png_ver[] in png_create_read_struct(). - Change "if (swidth == NULL)" to "if (sheight == NULL)" in png_handle_sCAL - (bug introduced in libpng-1.2.4/1.0.13). - Return from png_destroy_read_struct() if png_ptr_ptr is NULL. - Fix overflow of "msg" in png_decompress_chunk(). - -version 1.2.25beta04 [January 26, 2008] - Work around Coverity bug report by slightly refactoring - png_read_push_finish_row() - -version 1.2.25beta05 [January 31, 2008] - Added libpng-1.2.25beta05.tar.lzma to distribution. Get the lzma codec - from <http://tukaani.org/lzma>. - Added lp1225b05.7z to distribution. Get the 7-zip decoder from - from <http://www.7-zip.org>. - Fixed some broken links in the README file. - -version 1.2.25beta06 [February 6, 2008] - Refactored png_read_push_finish_row() again, trying to satisfy Coverity. - Fixed potential NULL dereference of png_ptr in png_destroy_write_struct(); - clarified potential NULL dereference of png_ptr in png_destroy_read_struct(); - fixed potential NULL dereference of info_ptr in png_handle_bKGD(); - fixed potential NULL dereference of user_png_ver[] in - png_create_write_struct_2(). (Coverity) - -version 1.2.25rc02 [February 10, 2008] - Reset png_ptr->pass in png_read_push_finish_row() before break. - Changed "pass" from png_byte to int. - -version 1.2.25 and 1.0.31 [February 18, 2008] - No changes. - -version 1.2.26beta01 [February 21, 2008] - Added missing "(" in pngmem.c. Bug introduced in libpng-1.2.2/1.0.13 - -version 1.2.26beta02 [March 12, 2008] - Refined error message returned from deflateInit2 in pngwutil.c - Check IHDR length in png_push_read_chunk() before saving it. - -version 1.2.26beta03 [March 16, 2008] - Revised contrib/gregbook to handle premature end-of-file and file - read errors correctly. - -version 1.2.26beta04 [March 18, 2008] - Free png_ptr->big_row_buf and png_ptr->prev_row before allocating - new copies in png_read_start_row(). Bug introduced in libpng-1.2.22. - -version 1.2.26beta05 [March 19, 2008] - Removed extra png_free() added in libpng-1.2.26beta04. - -version 1.2.26beta06 [March 19, 2008] - Avoid reallocating big_row_buf and prev_row when the size does not increase. - -version 1.2.26rc01 [March 26, 2008] - Ifdef out some code that is unused when interlacing is not supported. - -versions 1.0.32 and 1.2.26 [April 2, 2008] - No changes. - -version 1.2.27beta01 [April 12, 2008] - Fixed bug (introduced in libpng-1.0.5h) with handling zero-length - unknown chunks. - Added more information about png_set_keep_unknown_chunks() to the - documentation. - Reject tRNS chunk with out-of-range samples instead of masking off - the invalid high bits as done in since libpng-1.2.19beta5. - -version 1.2.27beta02 [April 13, 2008] - Revised documentation about unknown chunk and user chunk handling. - Keep tRNS chunk with out-of-range samples and issue a png_warning(). - -version 1.2.27beta03 [April 14, 2008] - Added check for NULL ptr in TURBOC version of png_free_default(). - Removed several unnecessary checks for NULL before calling png_free(). - Revised png_set_tRNS() so that calling it twice removes and invalidates - the previous call. - Revised pngtest to check for out-of-range tRNS samples. - -version 1.2.27beta04 [April 18, 2008] - Added AC_LIBTOOL_WIN32_DLL to configure.ac - Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.62 - -version 1.2.27beta05 [April 19, 2008] - Added MAINTAINERCLEANFILES variable to Makefile.am - -version 1.2.27beta06 [April 21, 2008] - Avoid changing color_type from GRAY to RGB by - png_set_expand_gray_1_2_4_to_8(). - -version 1.2.27rc01 [April 23, 2008] - Fix broken URL for rfc2083 in png.5 and libpng-*.txt - -version 1.0.33 and 1.2.27 [April 30, 2008] - No changes. - -version 1.0.34 and 1.2.28 [April 30, 2008] - Rebuilt Makefile.in, aclocal.m4, and configure with autoconf-2.61 - due to backward incompatibilities. - Removed a stray object file from contrib/gregbook - -version 1.2.29beta01 [May 1, 2008] - Removed some stray *.diff and *.orig files - -version 1.2.29beta02 [May 1, 2008] - Reverted Makefile.in, aclocal.m4, and configure to the libpng-1.2.26 - versions. - -version 1.2.29beta03 [May 2, 2008] - Added --force to autogen libtoolize options and --force-missing to - automake options. - Changed $(ECHO) to echo in Makefile.am and Makefile.in - Updated all configure files to autoconf-2.62 - Comment out pnggcrd.c code with #ifdef/#endif if using MSC_VER - -version 1.2.29rc01 [May 4, 2008] - No changes. - -version 1.0.35 and 1.2.29 [May 8, 2008] - No changes. - -version 1.0.37 [May 9, 2008] - Updated Makefile.in and configure (omitted version 1.0.36). - -version 1.2.30beta01 [May 29, 2008] - Updated libpng.pc-configure.in and libpng-config.in per debian bug reports. - -version 1.2.30beta02 [June 25, 2008] - Restored png_flush(png_ptr) at the end of png_write_end(), that was - removed from libpng-1.0.9beta03. - -version 1.2.30beta03 [July 6, 2008] - Merged some cosmetic whitespace changes from libpng-1.4.0beta19. - Inline call of png_get_uint_32() in png_get_uint_31(), as in 1.4.0beta19. - Added demo of decoding vpAg and sTER chunks to pngtest.c, from 1.4.0beta19. - Changed PNGMAJ from 0 to 12 in makefile.darwin, which does not like 0. - Added new private function png_read_chunk_header() from 1.4.0beta19. - Merge reading of chunk length and chunk type into a single 8-byte read. - Merge writing of chunk length and chunk type into a single 8-byte write. - -version 1.2.30beta04 [July 10, 2008] - Merged more cosmetic whitespace changes from libpng-1.4.0beta19. - -version 1.0.38rc01, 1.2.30rc01 [July 18, 2008] - No changes. - -version 1.0.38rc02, 1.2.30rc02 [July 21, 2008] - Moved local array "chunkdata" from pngrutil.c to the png_struct, so - it will be freed by png_read_destroy() in case of a read error (Kurt - Christensen). - -version 1.0.38rc03, 1.2.30rc03 [July 21, 2008] - Changed "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking. - -version 1.0.38rc04, 1.2.30rc04 [July 22, 2008] - Changed "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in - png_decompress_chunk(). - -version 1.0.38rc05, 1.2.30rc05 [July 25, 2008] - Changed all remaining "chunkdata" to "png_ptr->chunkdata" in - png_decompress_chunk() and remove chunkdata from parameter list. - Put a call to png_check_chunk_name() in png_read_chunk_header(). - Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte. - Removed two calls to png_check_chunk_name() occuring later in the process. - -version 1.0.38rc06, 1.2.30rc06 [July 29, 2008] - Added a call to png_check_chunk_name() in pngpread.c - Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte. - -version 1.0.38r07, 1.2.30r07 [August 2, 2008] - Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta) - Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings. - Added code in pngset.c to quiet compiler warnings. - Updated contrib/visupng/cexcept.h to version 2.0.1 - Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c - -version 1.0.38r08, 1.2.30r08 [August 2, 2008] - Enclose "volatile" declarations in #ifdef PNG_SETJMP_SUPPORTED (Cosmin). - -version 1.0.38, 1.2.30 [August 14, 2008] - No changes. - -version 1.2.31rc01 [August 19, 2008] - Removed extra crc check at the end of png_handle_cHRM(). Bug introduced - in libpng-1.2.30beta03 (Heiko Nitzsche). - -version 1.2.31rc02 [August 19, 2008] - Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call. - -version 1.2.31rc03 [August 19, 2008] - Added PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED block, off by default, around - new png_flush(). - -version 1.0.39, 1.2.31 [August 21, 2008] - No changes. - -version 1.2.32beta01 [September 6, 2008] - Shortened tIME_string to 29 bytes in pngtest.c (bug introduced in - libpng-1.2.22). - Fixed off-by-one error introduced in png_push_read_zTXt() function in - libpng-1.2.30beta04/pngpread.c (Harald van Dijk) - These bugs have been given the vulnerability id CVE-2008-3964. - -version 1.0.40, 1.2.32 [September 18, 2008] - No changes. - -version 1.2.33beta01 [October 6, 2008] - Revised makefile.darwin to fix shared library numbering. - Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8() - in example.c (debian bug report) - -version 1.2.33rc01 [October 15, 2008] - No changes. - -version 1.0.41rc01, version 1.2.33rc02 [October 23, 2008] - Changed remaining "key" to "png_ptr->chunkdata" in png_handle_tEXt() - to avoid memory leak after memory failure while reading tEXt chunk.` - -version 1.2.33 [October 31, 2008] - No changes. - -version 1.2.34beta01 [November 27, 2008] - Revised png_warning() to write its message on standard output by default - when warning_fn is NULL. This was the behavior prior to libpng-1.2.9beta9. - Fixed string vs pointer-to-string error in png_check_keyword(). - Added png_check_cHRM_fixed() in png.c and moved checking from pngget.c, - pngrutil.c, and pngwrite.c, and eliminated floating point cHRM checking. - Added check for zero-area RGB cHRM triangle in png_check_cHRM_fixed(). - In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant - check for all-zero coordinates that is detected by the triangle check. - Revised png_warning() to write its message on standard output by default - when warning_fn is NULL. - -version 1.2.34beta02 [November 28, 2008] - Corrected off-by-one error in bKGD validity check in png_write_bKGD() - and in png_handle_bKGD(). - -version 1.2.34beta03 [December 1, 2008] - Revised bKGD validity check to use >= x instead of > x + 1 - Merged with png_debug from libpng-1.4.0 to remove newlines. - -version 1.2.34beta04 [December 2, 2008] - More merging with png_debug from libpng-1.4.0 to remove newlines. - -version 1.2.34beta05 [December 5, 2008] - Removed redundant check for key==NULL before calling png_check_keyword() - to ensure that new_key gets initialized and removed extra warning - (Arvan Pritchard). - -version 1.2.34beta06 [December 9, 2008] - In png_write_png(), respect the placement of the filler bytes in an earlier - call to png_set_filler() (Jim Barry). - -version 1.2.34beta07 [December 9, 2008] - Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and - PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated - PNG_TRANSFORM_STRIP_FILLER (Jim Barry). - -version 1.0.42rc01, 1.2.34rc01 [December 11, 2008] - No changes. - -version 1.0.42, 1.2.34 [December 18, 2008] - No changes. - -version 1.2.35beta01 [February 4, 2009] - Zero out some arrays of pointers after png_malloc(). (Tavis Ormandy) - -version 1.2.35beta02 [February 4, 2009] - Zero out more arrays of pointers after png_malloc(). - -version 1.2.35beta03 [February 5, 2009] - Use png_memset() instead of a loop to intialize pointers. We realize - this will not work on platforms where the NULL pointer is not all zeroes. - -version 1.2.35rc01 [February 11, 2009] - No changes. - -version 1.2.35rc02 [February 12, 2009] - Fix typo in new png_memset call in pngset.c (png_color should be png_charp) - -version 1.0.43 and 1.2.35 [February 14, 2009] - No changes. - -version 1.2.36beta01 [February 28, 2009] - Revised comments in png_set_read_fn() and png_set_write_fn(). - Revised order of #ifdef's and indentation in png_debug definitions of png.h - bug introduced in libpng-1.2.34. - -version 1.2.36beta02 [March 21, 2009] - Use png_memset() after png_malloc() of big_row_buf when reading an - interlaced file, to avoid a possible UMR. - Undid recent revision of PNG_NO_STDIO version of png_write_flush(). Users - having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined. - Revised libpng*.txt documentation about use of png_write_flush(). - Removed fflush() from pngtest.c. - Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h - -version 1.2.36beta03 [March 27, 2009] - Relocated misplaced PNG_1_0_X define in png.h that caused the prototype - for png_set_strip_error_numbers() to be omitted from PNG_NO_ASSEMBLER_CODE - builds. This bug was introduced in libpng-1.2.15beta4. - Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt - -version 1.2.36beta04 [April 5, 2009] - Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles) - -version 1.2.36beta05 [April 24, 2009] - Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow - application code writers to bypass the check for multiple inclusion - of setjmp.h when they know that it is safe to ignore the situation. - Made some cosmetic changes to whitespace in pngtest output. - Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress - "shadowed declaration" warning from gcc-4.3.3. - Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration" - warning about a global "gamma" variable in math.h on some platforms. - -version 1.2.36rc01 [April 30, 2009] - No changes. - -version 1.0.44 and 1.2.36 [May 7, 2009] - No changes. - -version 1.2.37beta01 [May 14, 2009] - Fixed inconsistency in pngrutil.c, introduced in libpng-1.2.36. The - memset() was using "png_ptr->rowbytes" instead of "row_bytes", which - the corresponding png_malloc() uses (Joe Drew). - Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri) - Updated some of the makefiles in the scripts directory (merged with - those in libpng-1.4.0beta57). - -version 1.2.37beta02 [May 19, 2009] - Fixed typo in libpng documentation (FILTER_AVE should be FILTER_AVG) - Relocated misplaced #endif in pngwrite.c, sCAL chunk handler. - Conditionally compile png_read_finish_row() which is not used by - progressive readers. - Added contrib/pngminim/preader to demonstrate building minimal progressive - decoder, based on contrib/gregbook with embedded libpng and zlib. - -version 1.2.37beta03 [May 20, 2009] - In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there - is only one makefile in those directories, and revised the README files - accordingly. - Reformated sources in libpng style (3-space indentation, comment format) - -version 1.2.37rc01 [May 27, 2009] - No changes. - -versions 1.2.37 and 1.0.45 [June 4, 2009] - Reformatted several remaining "else statement;" and "if () statement;" into - two lines. - Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h - and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h - Added sections about the git repository and our coding style to the - documentation (merged from libpng-1.4.0beta62) - Added a section to the libpng documentation about using png_get_io_ptr() - in configure scripts to detect the presence of libpng. - -version 1.2.38beta01 [June 17, 2009] - Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR() - multiple times and to specify the sample order in the tRNS chunk, - because the ISO PNG specification has a typo in the tRNS table. - Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to - PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism - available for ignoring known chunks even when not saving unknown chunks. - Adopted preference for consistent use of "#ifdef" and "#ifndef" versus - "#if defined()" and "if !defined()" where possible. - Added PNG_NO_HANDLE_AS_UNKNOWN in the PNG_LEGACY_SUPPORTED block of - pngconf.h, and moved the various unknown chunk macro definitions - outside of the PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks. - -version 1.0.46 [June 18, 2009] - Removed some editing cruft from scripts/libpng.pc.in and some makefiles. - -version 1.2.38rc01 [June 24, 2009] - No changes. - -version 1.2.38rc02 [June 29, 2009] - Added a reference to the libpng license in each source file. - -version 1.2.38rc03 [July 11, 2009] - Revised references to the libpng license in pngconf.h and contrib/visupng - source files. - Rebuilt configure scripts with autoconf-2.63. - -version 1.0.47 and 1.2.38 [July 16, 2009] - No changes. - -version 1.2.39beta01 [July 25, 2009] - Added a prototype for png_64bit_product() in png.c - -version 1.2.39beta02 [July 27, 2009] - Avoid a possible NULL dereference in debug build, in png_set_text_2(). - (bug introduced in libpng-0.95, discovered by Evan Rouault) - -version 1.2.39beta03 [July 29, 2009] - Relocated new png_64_bit_product() prototype into png.h - Expanded the information about prototypes in the libpng style section of - the documentation. - Rebuilt configure scripts with autoconf-2.64. - -version 1.2.39beta04 [August 1, 2009] - Replaced *.tar.lzma with *.txz in distribution. Get the xz codec - from <http://tukaani.org/xz>. - -version 1.2.39beta05 [August 1, 2009] - Reject attempt to write iCCP chunk with negative embedded profile length - (JD Chen) - -version 1.2.39c01 [August 6, 2009] - No changes. - -version 1.2.39 and 1.0.48 [August 13, 2009] - No changes. - -version 1.2.40beta01 [August 20, 2009] - Removed an extra png_debug() recently added to png_write_find_filter(). - Fixed incorrect #ifdef in pngset.c regarding unknown chunk support. - -version 1.2.40rc01 [September 2, 2009] - Various bugfixes and improvements to CMakeLists.txt (Philip Lowman) - -version 1.2.40 and 1.0.49 [September 2, 2009] - No changes. - -version 1.0.50 [September 10, 2009] - Removed some editing cruft from pngset.c and pngwutil.c. - -version 1.2.41beta01 [September 25, 2009] - Moved redundant IHDR checking into new png_check_IHDR() in png.c - and report all errors found in the IHDR data. - Eliminated useless call to png_check_cHRM() from pngset.c - Expanded TAB characters in pngrtran.c - -version 1.2.41beta02 [September 30, 2009] - Revised png_check_IHDR(). - -version 1.2.41beta03 [October 1, 2009] - Revised png_check_IHDR() again, to check info_ptr members instead of - the contents of the returned parameters. - -version 1.2.41beta04 [October 7, 2009] - Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias). - Ported some cosmetic changes from libpng-1.4.0beta86. - Eliminated a shadowed declaration of "pp" in png_handle_sPLT(). - -version 1.2.41beta05 [October 17, 2009] - Revised pngconf.h to make it easier to enable iTXt support. From libpng - version 1.2.9 through 1.2.40, defining PNG_iTXt_SUPPORTED did not work - as expected. - Ported some cosmetic changes from libpng-1.4.0beta87, changing - many "#if defined(x)" to "#ifdef x". - -version 1.2.41beta06 [October 18, 2009] - Restored PNG_USE_LOCAL_ARRAYS code in pngread.c that was inadvertently - deleted in libpng-1.2.41beta05. - Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h - as in libpng-1.4.0beta78 and later. - -version 1.2.41beta07 [October 21, 2009] - Ported some cosmetic changes from libpng-1.4.0rc01, changing - many "#if defined(x)" to "#ifdef x" in png.h and pngconf.h. - -version 1.2.41beta08 [October 30, 2009] - Ported from libpng-1.4.0rc01: png_calloc(), png_get_io_chunk_name(), - png_get_io_state(), png_set_user_cache_max(), png_get_user_cache_max(), - png_set_premultiply_alpha, and png_do_read_premultiply_alpha(). - Relocated png_do_chop() ahead of building gamma tables in pngrtran.c - This avoids building 16-bit gamma tables unnecessarily. - -version 1.2.41beta09 [November 1, 2009] - Removed a harmless extra png_set_invert_alpha() from pngwrite.c - More bugfixes and improvements to CMakeLists.txt (Philip Lowman) - Moved CMakeLists.txt from scripts into the main libpng directory. - Apply png_user_chunk_cache_max within png_decompress_chunk(). - Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate. - -version 1.2.41beta10 [November 1, 2009] - Enabled iTXt support by default. To ensure binary compatibility with - previous versions, the "lang" and "lang_key" members will be assumed - to be omitted from previous versions unless the current libpng - version was built with PNG_iTXt_SUPPORTED (which is otherwise no - longer necessary to gain iTXt support), as a signal that the user has - been building previous versions with PNG_iTXt_SUPPORTED as well. - -version 1.2.41beta11 [November 2, 2009] - Store user's user_png_ver in new png_ptr->user_png_ver element. - Revised iTXt support. To ensure binary compatibility with - previous versions, the "lang" and "lang_key" members will be assumed - to be omitted from versions prior to 1.2.41beta11 whenever there is a - library mismatch. - -version 1.2.41beta12 [November 2, 2009] - Free png_ptr->user_png_ver when destroying png_ptr. - -version 1.2.41beta13 [November 3, 2009] - Updated scripts/pngw32.def and projects/wince/png32ce.def - Copied projects/wince/png32ce.def to the scripts directory. - Added scripts/makefile.wce - Patched ltmain.sh for wince support. - Added PNG_CONVERT_tIME_SUPPORTED macro. - -version 1.2.41beta14 [November 8, 2009] - versions 1.2.41beta05 through 1.2.41beta13 were abandoned. - The 1.0.x/1.2.x series will only receive security updates from now on. - Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED - Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED - Reverted iTXt compatibility stuff from 1.2.41beta05, 1.2.41beta11, and - 1.2.41beta12. - Reverted IOSTATE feature, user_cache_max, and premultiply_alpha features - from 1.2.41beta08. - Retained png_calloc() from 1.2.41beta08 but as a non-exported function, - and removed reference to png_calloc from scripts/*.def - -version 1.2.41beta15 [November 8, 2009] - Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and - PNG_ALLOCATED macros to detect deprecated direct access to the - png_struct or info_struct members and other deprecated usage in - applications (John Bowler). - Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS, - to prevent warnings about direct access to png structs by libpng - functions while building libpng. They need to be tested, especially - those using compilers other than gcc. - Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG". - -version 1.2.41beta16 [November 9, 2009] - Removed three direct references to read_info_ptr members in pngtest.c - that were detected by the new PNG_DEPSTRUCT macro. - Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined. - -version 1.2.41beta17 [November 10, 2009] - Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions. - Marked deprecated function prototypes with PNG_DEPRECATED. - Marked memory allocation function prototypes with PNG_ALLOCATED. - Changed png_check_sig() to !png_sig_cmp() in contrib programs. - Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c - Added "-DPNG_CONFIGURE_LIBPNG" to the contrib/pngminum makefiles. - -version 1.2.41beta18 [November 11, 2009] - Renamed scripts/makefile.wce to scripts/makefile.cegcc - Marked nonexported functions with PNG_PRIVATE macro. - -version 1.2.41rc01 and 1.0.51rc01 [November 18, 2009] - Revised scripts/*.def to reflect functions actually exported by libpng. - Updated the copyright year in scripts/pngw32.rc from 2004 to 2009. - Moved descriptions of makefiles and other scripts out of INSTALL into - scripts/README.txt - -version 1.2.41rc02 [November 22, 2009] - Rebuilt the configure scripts with autoconf-2.65 - -version 1.2.41rc03 [November 25, 2009] - Disabled the new pedantic warnings about deprecated function use - and deprecated structure access unless the user defines - PNG_PEDANTIC_WARNINGS. - Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files. - Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects. - -version 1.2.41 and 1.0.51 [December 3, 2009] - Updated the list of files and made some cosmetic changes in README. - -version 1.2.42beta01 [December 4, 2009] - Removed "#define PNG_NO_ERROR_NUMBERS" that was inadvertently added - to pngconf.h in version 1.2.41. - Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco - to put png.h and pngconf.h in $prefix/include, like the other scripts, - instead of in $prefix/include/libpng. Also revised makefile.sco - to put them in $prefix/include/libpng12 instead of in - $prefix/include/libpng/libpng12. - Removed leftover "-DPNG_CONFIGURE_LIBPNG" from scripts/makefile.darwin - -version 1.2.42beta02 [December 11, 2009] - Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile - Relocated png_do_chop() to its original position in pngrtran.c. The - change in version 1.2.41beta08 caused transparency to be handled wrong - in some 16-bit datastreams (Yusaku Sugai). - -version 1.2.42rc01 [December 17, 2009] - No changes. - -version 1.2.42rc02 [December 22, 2009] - Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt - (revising changes made in 1.2.41beta17 and 1.2.41rc01) - -version 1.2.42rc03 [December 25, 2009] - Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED - in pngset.c to be consistent with other changes in version 1.2.38. - -version 1.2.42rc04 [January 1, 2010] - Marked png_memcpy_check() and png_memset_check() PNG_DEPRECATED. - Updated copyright year. - -version 1.2.42rc05 [January 2, 2010] - Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr - in pngtest.c - -version 1.2.42 and 1.0.52 [January 3, 2010] - No changes. - -version 1.2.43beta01 [January 27, 2010] - Updated CMakeLists.txt for consistent indentation and to avoid an - unclosed if-statement warning (Philip Lowman). - Removed "#ifdef PNG_1_0_X / #endif" surrounding - PNG_READ_16_TO_8_SUPPORTED and PNG_READ_GRAY_TO_RGB_SUPPORTED - in pngconf.h. These were added in libpng-1.2.41beta08 and libpng-1.0.51, - which introduced a binary incompatibility with libpng-1.0.50. - Backported new png_decompress_chunk() algorithm from libpng-1.4.1. - -version 1.2.43beta02 [February 1, 2010] - Backported two-pass png_decompress_chunk() algorithm from libpng-1.4.1. - -version 1.2.43beta03 [February 6, 2010] - Backported fast png_push_save_buffer() algorithm from libpng-1.4.1. - Backported some cosmetic changes from libpng-1.4.1. - -version 1.2.43beta04 [February 8, 2010] - Reverted recent changes to png_push_save-buffer(). - Removed PNGAPI declaration of png_calloc() and png_write_sig() in - 1ibpng-1.2.X, introduced by mistake in libpng-1.2.41. - Return allocated "old_buffer" in png_push_save_buffer() before png_error() - to avoid a potential memory leak. - -version 1.2.43beta05 [February 8, 2010] - Ported rewritten png_decompress_chunk() by John Bowler from libpng-1.4.1. - -version 1.0.53rc01 and 1.2.43rc01 [February 18, 2010] - No changes. - -version 1.0.53rc02 and 1.2.43rc02 [February 19, 2010] - Define _ALL_SOURCE in configure.ac, makefile.aix, and CMakeLists.txt - when using AIX compiler. - -version 1.0.53 and 1.2.43 [February 25, 2010] - Removed unused gzio.c from contrib/pngminim gather and makefile scripts - -version 1.2.44beta01 [June 18, 2010] - In pngpread.c: png_push_have_row() add check for new_row > height - Removed the now-redundant check for out-of-bounds new_row from example.c - -version 1.2.44beta02 [June 19, 2010] - In pngpread.c: png_push_process_row() add check for too many rows. - Removed the now-redundant check for new_row > height in png_push_have_row(). - -version 1.2.44beta03 [June 20, 2010] - Rewrote png_process_IDAT_data() to consistently treat extra data as warnings - and handle end conditions more cleanly. - Removed the new (beta02) check in png_push_process_row(). - -version 1.2.44rc01 [June 21, 2010] - Revised some comments in png_process_IDAT_data(). - -version 1.2.44rc02 [June 22, 2010] - Stop memory leak when reading a malformed sCAL chunk. - -version 1.2.44rc03 [June 23, 2010] - Revised pngpread.c patch of beta05 to avoid an endless loop. - -version 1.2.44 [June 26, 2010] - Updated some of the "last changed" dates. - -Send comments/corrections/commendations to png-mng-implement at lists.sf.net -(subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) -or to glennrp at users.sourceforge.net - -Glenn R-P -*/ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/KNOWNBUG b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/KNOWNBUG deleted file mode 100644 index 59f7261..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/KNOWNBUG +++ /dev/null @@ -1,29 +0,0 @@ - -Known bugs in libpng version 1.2.44 - -1. December 4, 2009: The PNG_NO_ERROR_NUMBERS macro was inadvertently - defined in libpng-1.2.41/pngconf.h, which may cause a problem with - building a binary-compatible library. - - STATUS: This will be fixed in libpng-1.2.42. In the meantime, simply - delete the definition from line : - -2. February 23, 2006: The custom makefiles don't build libpng with -lz. - - STATUS: This is a subject of debate. The change will probably be made - as a part of a major overhaul of the makefiles in libpng version 1.4.0. - -3. February 24, 2006: The Makefile generated by the "configure" script - fails to install symbolic links - libpng12.so => libpng12.so.0.1.2.9betaN - that are generated by the custom makefiles. - -4. September 4, 2007: There is a report that pngtest crashes on MacOS 10. - - STATUS: workarounds are - 1) Compile without optimization (crashes are observed with - -arch i386 and -O2 or -O3, using gcc-4.0.1). - 2) Compile pngtest.c with PNG_DEBUG defined (the bug goes away if - you try to look at it). - 3) Ignore the crash. The library itself seems to be OK. - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/LICENSE b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/LICENSE deleted file mode 100644 index e5561c2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/LICENSE +++ /dev/null @@ -1,111 +0,0 @@ - -This copy of the libpng notices is provided for your convenience. In case of -any discrepancy between this copy and the notices in the file png.h that is -included in the libpng distribution, the latter shall prevail. - -COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: - -If you modify libpng you may insert additional notices immediately following -this sentence. - -This code is released under the libpng license. - -libpng versions 1.2.6, August 15, 2004, through 1.2.44, June 26, 2010, are -Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are -distributed according to the same disclaimer and license as libpng-1.2.5 -with the following individual added to the list of Contributing Authors - - Cosmin Truta - -libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are -Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are -distributed according to the same disclaimer and license as libpng-1.0.6 -with the following individuals added to the list of Contributing Authors - - Simon-Pierre Cadieux - Eric S. Raymond - Gilles Vollant - -and with the following additions to the disclaimer: - - There is no warranty against interference with your enjoyment of the - library or against infringement. There is no warranty that our - efforts or the library will fulfill any of your particular purposes - or needs. This library is provided with all faults, and the entire - risk of satisfactory quality, performance, accuracy, and effort is with - the user. - -libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are -Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are -distributed according to the same disclaimer and license as libpng-0.96, -with the following individuals added to the list of Contributing Authors: - - Tom Lane - Glenn Randers-Pehrson - Willem van Schaik - -libpng versions 0.89, June 1996, through 0.96, May 1997, are -Copyright (c) 1996, 1997 Andreas Dilger -Distributed according to the same disclaimer and license as libpng-0.88, -with the following individuals added to the list of Contributing Authors: - - John Bowler - Kevin Bracey - Sam Bushell - Magnus Holmgren - Greg Roelofs - Tom Tanner - -libpng versions 0.5, May 1995, through 0.88, January 1996, are -Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. - -For the purposes of this copyright and license, "Contributing Authors" -is defined as the following set of individuals: - - Andreas Dilger - Dave Martindale - Guy Eric Schalnat - Paul Schmidt - Tim Wegner - -The PNG Reference Library is supplied "AS IS". The Contributing Authors -and Group 42, Inc. disclaim all warranties, expressed or implied, -including, without limitation, the warranties of merchantability and of -fitness for any purpose. The Contributing Authors and Group 42, Inc. -assume no liability for direct, indirect, incidental, special, exemplary, -or consequential damages, which may result from the use of the PNG -Reference Library, even if advised of the possibility of such damage. - -Permission is hereby granted to use, copy, modify, and distribute this -source code, or portions hereof, for any purpose, without fee, subject -to the following restrictions: - -1. The origin of this source code must not be misrepresented. - -2. Altered versions must be plainly marked as such and must not - be misrepresented as being the original source. - -3. This Copyright notice may not be removed or altered from any - source or altered source distribution. - -The Contributing Authors and Group 42, Inc. specifically permit, without -fee, and encourage the use of this source code as a component to -supporting the PNG file format in commercial products. If you use this -source code in a product, acknowledgment is not required but would be -appreciated. - - -A "png_get_copyright" function is available, for convenient use in "about" -boxes and the like: - - printf("%s",png_get_copyright(NULL)); - -Also, the PNG logo (in PNG format, of course) is supplied in the -files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). - -Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a -certification mark of the Open Source Initiative. - -Glenn Randers-Pehrson -glennrp at users.sourceforge.net -June 26, 2010 diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/README b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/README deleted file mode 100644 index ff7ac1f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/README +++ /dev/null @@ -1,275 +0,0 @@ -README for libpng version 1.2.44 - June 26, 2010 (shared library 12.0) -See the note about version numbers near the top of png.h - -See INSTALL for instructions on how to install libpng. - -Libpng comes in several distribution formats. Get libpng-*.tar.gz, -libpng-*.tar.xz, or libpng-*.tar.bz2 if you want UNIX-style line -endings in the text files, or lpng*.7z or lpng*.zip if you want DOS-style -line endings. You can get UNIX-style line endings from the *.zip file -by using "unzip -a" but there seems to be no simple way to recover -UNIX-style line endings from the *.7z file. The *.tar.xz file is -recommended for *NIX users instead. - -Version 0.89 was the first official release of libpng. Don't let the -fact that it's the first release fool you. The libpng library has been in -extensive use and testing since mid-1995. By late 1997 it had -finally gotten to the stage where there hadn't been significant -changes to the API in some time, and people have a bad feeling about -libraries with versions < 1.0. Version 1.0.0 was released in -March 1998. - -**** -Note that some of the changes to the png_info structure render this -version of the library binary incompatible with libpng-0.89 or -earlier versions if you are using a shared library. The type of the -"filler" parameter for png_set_filler() has changed from png_byte to -png_uint_32, which will affect shared-library applications that use -this function. - -To avoid problems with changes to the internals of png_info_struct, -new APIs have been made available in 0.95 to avoid direct application -access to info_ptr. These functions are the png_set_<chunk> and -png_get_<chunk> functions. These functions should be used when -accessing/storing the info_struct data, rather than manipulating it -directly, to avoid such problems in the future. - -It is important to note that the APIs do not make current programs -that access the info struct directly incompatible with the new -library. However, it is strongly suggested that new programs use -the new APIs (as shown in example.c and pngtest.c), and older programs -be converted to the new format, to facilitate upgrades in the future. -**** - -Additions since 0.90 include the ability to compile libpng as a -Windows DLL, and new APIs for accessing data in the info struct. -Experimental functions include the ability to set weighting and cost -factors for row filter selection, direct reads of integers from buffers -on big-endian processors that support misaligned data access, faster -methods of doing alpha composition, and more accurate 16->8 bit color -conversion. - -The additions since 0.89 include the ability to read from a PNG stream -which has had some (or all) of the signature bytes read by the calling -application. This also allows the reading of embedded PNG streams that -do not have the PNG file signature. As well, it is now possible to set -the library action on the detection of chunk CRC errors. It is possible -to set different actions based on whether the CRC error occurred in a -critical or an ancillary chunk. - -The changes made to the library, and bugs fixed are based on discussions -on the png-mng-implement mailing list and not on material submitted -privately to Guy, Andreas, or Glenn. They will forward any good -suggestions to the list. - -For a detailed description on using libpng, read libpng.txt. For -examples of libpng in a program, see example.c and pngtest.c. For usage -information and restrictions (what little they are) on libpng, see -png.h. For a description on using zlib (the compression library used by -libpng) and zlib's restrictions, see zlib.h - -I have included a general makefile, as well as several machine and -compiler specific ones, but you may have to modify one for your own needs. - -You should use zlib 1.0.4 or later to run this, but it MAY work with -versions as old as zlib 0.95. Even so, there are bugs in older zlib -versions which can cause the output of invalid compression streams for -some images. You will definitely need zlib 1.0.4 or later if you are -taking advantage of the MS-DOS "far" structure allocation for the small -and medium memory models. You should also note that zlib is a -compression library that is useful for more things than just PNG files. -You can use zlib as a drop-in replacement for fread() and fwrite() if -you are so inclined. - -zlib should be available at the same place that libpng is, or at -ftp://ftp.simplesystems.org/pub/png/src/ - -You may also want a copy of the PNG specification. It is available -as an RFC, a W3C Recommendation, and an ISO/IEC Standard. You can find -these at http://www.libpng.org/pub/png/pngdocs.html - -This code is currently being archived at libpng.sf.net in the -[DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT) -at GO GRAPHSUP. If you can't find it in any of those places, -e-mail me, and I'll help you find it. - -If you have any code changes, requests, problems, etc., please e-mail -them to me. Also, I'd appreciate any make files or project files, -and any modifications you needed to make to get libpng to compile, -along with a #define variable to tell what compiler/system you are on. -If you needed to add transformations to libpng, or wish libpng would -provide the image in a different way, drop me a note (and code, if -possible), so I can consider supporting the transformation. -Finally, if you get any warning messages when compiling libpng -(note: not zlib), and they are easy to fix, I'd appreciate the -fix. Please mention "libpng" somewhere in the subject line. Thanks. - -This release was created and will be supported by myself (of course -based in a large way on Guy's and Andreas' earlier work), and the PNG -development group. - -Send comments/corrections/commendations to png-mng-implement at lists.sf.net -(subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) or to glennrp at users.sourceforge.net - -You can't reach Guy, the original libpng author, at the addresses -given in previous versions of this document. He and Andreas will -read mail addressed to the png-mng-implement list, however. - -Please do not send general questions about PNG. Send them to -the (png-mng-misc at lists.sourceforge.net, subscription required, visit -https://lists.sourceforge.net/lists/listinfo/png-mng-misc to -subscribe). On the other hand, please do not send libpng questions to -that address, send them to me or to the png-mng-implement list. I'll -get them in the end anyway. If you have a question about something -in the PNG specification that is related to using libpng, send it -to me. Send me any questions that start with "I was using libpng, -and ...". If in doubt, send questions to me. I'll bounce them -to others, if necessary. - -Please do not send suggestions on how to change PNG. We have -been discussing PNG for twelve years now, and it is official and -finished. If you have suggestions for libpng, however, I'll -gladly listen. Even if your suggestion is not used immediately, -it may be used later. - -Files in this distribution: - - ANNOUNCE => Announcement of this version, with recent changes - CHANGES => Description of changes between libpng versions - KNOWNBUG => List of known bugs and deficiencies - LICENSE => License to use and redistribute libpng - README => This file - TODO => Things not implemented in the current library - Y2KINFO => Statement of Y2K compliance - example.c => Example code for using libpng functions - libpng-*-*-diff.txt => Diff from previous release - libpng.3 => manual page for libpng (includes libpng.txt) - libpng.txt => Description of libpng and its functions - libpngpf.3 => manual page for libpng's private functions - png.5 => manual page for the PNG format - png.c => Basic interface functions common to library - png.h => Library function and interface declarations - pngconf.h => System specific library configuration - pngerror.c => Error/warning message I/O functions - pngget.c => Functions for retrieving info from struct - pngmem.c => Memory handling functions - pngbar.png => PNG logo, 88x31 - pngnow.png => PNG logo, 98x31 - pngpread.c => Progressive reading functions - pngread.c => Read data/helper high-level functions - pngrio.c => Lowest-level data read I/O functions - pngrtran.c => Read data transformation functions - pngrutil.c => Read data utility functions - pngset.c => Functions for storing data into the info_struct - pngtest.c => Library test program - pngtest.png => Library test sample image - pngtrans.c => Common data transformation functions - pngwio.c => Lowest-level write I/O functions - pngwrite.c => High-level write functions - pngwtran.c => Write data transformations - pngwutil.c => Write utility functions - contrib => Contributions - gregbook => source code for PNG reading and writing, from - Greg Roelofs' "PNG: The Definitive Guide", - O'Reilly, 1999 - msvctest => Builds and runs pngtest using a MSVC workspace - pngminim => Simple pnm2pngm and png2pnmm programs - pngminus => Simple pnm2png and png2pnm programs - pngsuite => Test images - visupng => Contains a MSVC workspace for VisualPng - projects => Contains project files and workspaces for - building a DLL - beos => Contains a Beos workspace for building libpng - c5builder => Contains a Borland workspace for building - libpng and zlib - netware.txt => Contains instructions for downloading a set - of project files for building libpng and - zlib on Netware. - visualc6 => Contains a Microsoft Visual C++ (MSVC) - workspace for building libpng and zlib - wince.txt => Contains instructions for downloading a - Microsoft Visual C++ (Windows CD Toolkit) - workspace for building libpng and zlib on - WindowsCE - xcode => Contains xcode project files - scripts => Directory containing scripts for building libpng: - descrip.mms => VMS makefile for MMS or MMK - makefile.std => Generic UNIX makefile (cc, creates static - libpng.a) - makefile.elf => Linux/ELF gcc makefile symbol versioning, - creates libpng12.so.0.1.2.44) - makefile.linux => Linux/ELF makefile (gcc, creates - libpng12.so.0.1.2.44) - makefile.gcmmx => Linux/ELF makefile (gcc, creates - libpng12.so.0.1.2.44, previously - used assembler code tuned for Intel MMX - platform) - makefile.gcc => Generic makefile (gcc, creates static - libpng.a) - makefile.knr => Archaic UNIX Makefile that converts files - with ansi2knr (Requires ansi2knr.c from - ftp://ftp.cs.wisc.edu/ghost) - makefile.aix => AIX makefile - makefile.cygwin => Cygwin/gcc makefile - makefile.darwin => Darwin makefile - makefile.dec => DEC Alpha UNIX makefile - makefile.freebsd => FreeBSD makefile - makefile.hpgcc => HPUX makefile using gcc - makefile.hpux => HPUX (10.20 and 11.00) makefile - makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64 bit - makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 - (static) - makefile.intel => Intel C/C++ version 4.0 and later - libpng.icc => Project file, IBM VisualAge/C++ 4.0 or later - makefile.netbsd => NetBSD/cc makefile, makes libpng.so. - makefile.ne12bsd => NetBSD/cc makefile, makes libpng12.so - makefile.openbsd => OpenBSD makefile - makefile.sgi => Silicon Graphics IRIX (cc, creates static lib) - makefile.sggcc => Silicon Graphics - (gcc, creates libpng12.so.0.1.2.44) - makefile.sunos => Sun makefile - makefile.solaris => Solaris 2.X makefile - (gcc, creates libpng12.so.0.1.2.44) - makefile.so9 => Solaris 9 makefile - (gcc, creates libpng12.so.0.1.2.44) - makefile.32sunu => Sun Ultra 32-bit makefile - makefile.64sunu => Sun Ultra 64-bit makefile - makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc - makefile.mips => MIPS makefile - makefile.acorn => Acorn makefile - makefile.amiga => Amiga makefile - smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC - compiler (Requires SCOPTIONS, copied from - scripts/SCOPTIONS.ppc) - makefile.atari => Atari makefile - makefile.beos => BEOS makefile for X86 - makefile.bor => Borland makefile (uses bcc) - makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode) - makefile.tc3 => Turbo C 3.0 makefile - makefile.dj2 => DJGPP 2 makefile - makefile.msc => Microsoft C makefile - makefile.vcawin32=> makefile for Microsoft Visual C++ 5.0 and - later (previously used assembler code tuned - for Intel MMX platform) - makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and - later (does not use assembler code) - makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def) - pngos2.def => OS/2 module definition file used by makefile.os2 - makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model - makevms.com => VMS build script - SCOPTIONS.ppc => Used with smakefile.ppc - -Good luck, and happy coding. - --Glenn Randers-Pehrson (current maintainer, since 1998) - Internet: glennrp at users.sourceforge.net - --Andreas Eric Dilger (former maintainer, 1996-1997) - Internet: adilger at enel.ucalgary.ca - Web: http://members.shaw.ca/adilger/ - --Guy Eric Schalnat (original author and former maintainer, 1995-1996) - (formerly of Group 42, Inc) - Internet: gschal at infinet.com diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/TODO b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/TODO deleted file mode 100644 index face765..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/TODO +++ /dev/null @@ -1,25 +0,0 @@ -TODO - list of things to do for libpng: - -Final bug fixes. -Improve API by hiding the png_struct and png_info structs. -Finish work on the no-floating-point version (including gamma compensation) -Better C++ wrapper/full C++ implementation? -Fix problem with C++ and EXTERN "C". -cHRM transformation. -Improve setjmp/longjmp usage or remove it in favor of returning error codes. -Add "grayscale->palette" transformation and "palette->grayscale" detection. -Improved dithering. -Multi-lingual error and warning message support. -Complete sRGB transformation (presently it simply uses gamma=0.45455). -Man pages for function calls. -Better documentation. -Better filter selection - (counting huffman bits/precompression? filter inertia? filter costs?). -Histogram creation. -Text conversion between different code pages (Latin-1 -> Mac and DOS). -Should we always malloc 2^bit_depth PLTE/tRNS/hIST entries for safety? -Build gamma tables using fixed point (and do away with floating point entirely). -Use greater precision when changing to linear gamma for compositing against - background and doing rgb-to-gray transformation. -Investigate pre-incremented loop counters and other loop constructions. -Add interpolated method of handling interlacing. diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/Y2KINFO b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/Y2KINFO deleted file mode 100644 index 1cf3a0a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/Y2KINFO +++ /dev/null @@ -1,55 +0,0 @@ - Y2K compliance in libpng: - ========================= - - June 26, 2010 - - Since the PNG Development group is an ad-hoc body, we can't make - an official declaration. - - This is your unofficial assurance that libpng from version 0.71 and - upward through 1.2.44 are Y2K compliant. It is my belief that earlier - versions were also Y2K compliant. - - Libpng only has three year fields. One is a 2-byte unsigned integer - that will hold years up to 65535. The other two hold the date in text - format, and will hold years up to 9999. - - The integer is - "png_uint_16 year" in png_time_struct. - - The strings are - "png_charp time_buffer" in png_struct and - "near_time_buffer", which is a local character string in png.c. - - There are seven time-related functions: - - png_convert_to_rfc_1123() in png.c - (formerly png_convert_to_rfc_1152() in error) - png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c - png_convert_from_time_t() in pngwrite.c - png_get_tIME() in pngget.c - png_handle_tIME() in pngrutil.c, called in pngread.c - png_set_tIME() in pngset.c - png_write_tIME() in pngwutil.c, called in pngwrite.c - - All appear to handle dates properly in a Y2K environment. The - png_convert_from_time_t() function calls gmtime() to convert from system - clock time, which returns (year - 1900), which we properly convert to - the full 4-digit year. There is a possibility that applications using - libpng are not passing 4-digit years into the png_convert_to_rfc_1123() - function, or that they are incorrectly passing only a 2-digit year - instead of "year - 1900" into the png_convert_from_struct_tm() function, - but this is not under our control. The libpng documentation has always - stated that it works with 4-digit years, and the APIs have been - documented as such. - - The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned - integer to hold the year, and can hold years as large as 65535. - - zlib, upon which libpng depends, is also Y2K compliant. It contains - no date-related code. - - - Glenn Randers-Pehrson - libpng maintainer - PNG Development Group diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/example.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/example.c deleted file mode 100644 index 49b8724..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/example.c +++ /dev/null @@ -1,832 +0,0 @@ - -#if 0 /* in case someone actually tries to compile this */ - -/* example.c - an example of using libpng - * Last changed in libpng 1.2.37 [June 4, 2009] - * This file has been placed in the public domain by the authors. - * Maintained 1998-2010 Glenn Randers-Pehrson - * Maintained 1996, 1997 Andreas Dilger) - * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - */ - -/* This is an example of how to use libpng to read and write PNG files. - * The file libpng.txt is much more verbose then this. If you have not - * read it, do so first. This was designed to be a starting point of an - * implementation. This is not officially part of libpng, is hereby placed - * in the public domain, and therefore does not require a copyright notice. - * - * This file does not currently compile, because it is missing certain - * parts, like allocating memory to hold an image. You will have to - * supply these parts to get it to compile. For an example of a minimal - * working PNG reader/writer, see pngtest.c, included in this distribution; - * see also the programs in the contrib directory. - */ - -#include "png.h" - - /* The png_jmpbuf() macro, used in error handling, became available in - * libpng version 1.0.6. If you want to be able to run your code with older - * versions of libpng, you must define the macro yourself (but only if it - * is not already defined by libpng!). - */ - -#ifndef png_jmpbuf -# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) -#endif - -/* Check to see if a file is a PNG file using png_sig_cmp(). png_sig_cmp() - * returns zero if the image is a PNG and nonzero if it isn't a PNG. - * - * The function check_if_png() shown here, but not used, returns nonzero (true) - * if the file can be opened and is a PNG, 0 (false) otherwise. - * - * If this call is successful, and you are going to keep the file open, - * you should call png_set_sig_bytes(png_ptr, PNG_BYTES_TO_CHECK); once - * you have created the png_ptr, so that libpng knows your application - * has read that many bytes from the start of the file. Make sure you - * don't call png_set_sig_bytes() with more than 8 bytes read or give it - * an incorrect number of bytes read, or you will either have read too - * many bytes (your fault), or you are telling libpng to read the wrong - * number of magic bytes (also your fault). - * - * Many applications already read the first 2 or 4 bytes from the start - * of the image to determine the file type, so it would be easiest just - * to pass the bytes to png_sig_cmp() or even skip that if you know - * you have a PNG file, and call png_set_sig_bytes(). - */ -#define PNG_BYTES_TO_CHECK 4 -int check_if_png(char *file_name, FILE **fp) -{ - char buf[PNG_BYTES_TO_CHECK]; - - /* Open the prospective PNG file. */ - if ((*fp = fopen(file_name, "rb")) == NULL) - return 0; - - /* Read in some of the signature bytes */ - if (fread(buf, 1, PNG_BYTES_TO_CHECK, *fp) != PNG_BYTES_TO_CHECK) - return 0; - - /* Compare the first PNG_BYTES_TO_CHECK bytes of the signature. - Return nonzero (true) if they match */ - - return(!png_sig_cmp(buf, (png_size_t)0, PNG_BYTES_TO_CHECK)); -} - -/* Read a PNG file. You may want to return an error code if the read - * fails (depending upon the failure). There are two "prototypes" given - * here - one where we are given the filename, and we need to open the - * file, and the other where we are given an open file (possibly with - * some or all of the magic bytes read - see comments above). - */ -#ifdef open_file /* prototype 1 */ -void read_png(char *file_name) /* We need to open the file */ -{ - png_structp png_ptr; - png_infop info_ptr; - unsigned int sig_read = 0; - png_uint_32 width, height; - int bit_depth, color_type, interlace_type; - FILE *fp; - - if ((fp = fopen(file_name, "rb")) == NULL) - return (ERROR); - -#else no_open_file /* prototype 2 */ -void read_png(FILE *fp, unsigned int sig_read) /* File is already open */ -{ - png_structp png_ptr; - png_infop info_ptr; - png_uint_32 width, height; - int bit_depth, color_type, interlace_type; -#endif no_open_file /* Only use one prototype! */ - - /* Create and initialize the png_struct with the desired error handler - * functions. If you want to use the default stderr and longjump method, - * you can supply NULL for the last three parameters. We also supply the - * the compiler header file version, so that we know if the application - * was compiled with a compatible version of the library. REQUIRED - */ - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, - png_voidp user_error_ptr, user_error_fn, user_warning_fn); - - if (png_ptr == NULL) - { - fclose(fp); - return (ERROR); - } - - /* Allocate/initialize the memory for image information. REQUIRED. */ - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - { - fclose(fp); - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - return (ERROR); - } - - /* Set error handling if you are using the setjmp/longjmp method (this is - * the normal method of doing things with libpng). REQUIRED unless you - * set up your own error handlers in the png_create_read_struct() earlier. - */ - - if (setjmp(png_jmpbuf(png_ptr))) - { - /* Free all of the memory associated with the png_ptr and info_ptr */ - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - fclose(fp); - /* If we get here, we had a problem reading the file */ - return (ERROR); - } - - /* One of the following I/O initialization methods is REQUIRED */ -#ifdef streams /* PNG file I/O method 1 */ - /* Set up the input control if you are using standard C streams */ - png_init_io(png_ptr, fp); - -#else no_streams /* PNG file I/O method 2 */ - /* If you are using replacement read functions, instead of calling - * png_init_io() here you would call: - */ - png_set_read_fn(png_ptr, (void *)user_io_ptr, user_read_fn); - /* where user_io_ptr is a structure you want available to the callbacks */ -#endif no_streams /* Use only one I/O method! */ - - /* If we have already read some of the signature */ - png_set_sig_bytes(png_ptr, sig_read); - -#ifdef hilevel - /* - * If you have enough memory to read in the entire image at once, - * and you need to specify only transforms that can be controlled - * with one of the PNG_TRANSFORM_* bits (this presently excludes - * dithering, filling, setting background, and doing gamma - * adjustment), then you can read the entire image (including - * pixels) into the info structure with this call: - */ - png_read_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL); - -#else - /* OK, you're doing it the hard way, with the lower-level functions */ - - /* The call to png_read_info() gives us all of the information from the - * PNG file before the first IDAT (image data chunk). REQUIRED - */ - png_read_info(png_ptr, info_ptr); - - png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, - &interlace_type, int_p_NULL, int_p_NULL); - - /* Set up the data transformations you want. Note that these are all - * optional. Only call them if you want/need them. Many of the - * transformations only work on specific types of images, and many - * are mutually exclusive. - */ - - /* Tell libpng to strip 16 bit/color files down to 8 bits/color */ - png_set_strip_16(png_ptr); - - /* Strip alpha bytes from the input data without combining with the - * background (not recommended). - */ - png_set_strip_alpha(png_ptr); - - /* Extract multiple pixels with bit depths of 1, 2, and 4 from a single - * byte into separate bytes (useful for paletted and grayscale images). - */ - png_set_packing(png_ptr); - - /* Change the order of packed pixels to least significant bit first - * (not useful if you are using png_set_packing). */ - png_set_packswap(png_ptr); - - /* Expand paletted colors into true RGB triplets */ - if (color_type == PNG_COLOR_TYPE_PALETTE) - png_set_palette_to_rgb(png_ptr); - - /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */ - if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) - png_set_expand_gray_1_2_4_to_8(png_ptr); - - /* Expand paletted or RGB images with transparency to full alpha channels - * so the data will be available as RGBA quartets. - */ - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) - png_set_tRNS_to_alpha(png_ptr); - - /* Set the background color to draw transparent and alpha images over. - * It is possible to set the red, green, and blue components directly - * for paletted images instead of supplying a palette index. Note that - * even if the PNG file supplies a background, you are not required to - * use it - you should use the (solid) application background if it has one. - */ - - png_color_16 my_background, *image_background; - - if (png_get_bKGD(png_ptr, info_ptr, &image_background)) - png_set_background(png_ptr, image_background, - PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); - else - png_set_background(png_ptr, &my_background, - PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); - - /* Some suggestions as to how to get a screen gamma value - * - * Note that screen gamma is the display_exponent, which includes - * the CRT_exponent and any correction for viewing conditions - */ - if (/* We have a user-defined screen gamma value */) - { - screen_gamma = user-defined screen_gamma; - } - /* This is one way that applications share the same screen gamma value */ - else if ((gamma_str = getenv("SCREEN_GAMMA")) != NULL) - { - screen_gamma = atof(gamma_str); - } - /* If we don't have another value */ - else - { - screen_gamma = 2.2; /* A good guess for a PC monitor in a dimly - lit room */ - screen_gamma = 1.7 or 1.0; /* A good guess for Mac systems */ - } - - /* Tell libpng to handle the gamma conversion for you. The final call - * is a good guess for PC generated images, but it should be configurable - * by the user at run time by the user. It is strongly suggested that - * your application support gamma correction. - */ - - int intent; - - if (png_get_sRGB(png_ptr, info_ptr, &intent)) - png_set_gamma(png_ptr, screen_gamma, 0.45455); - else - { - double image_gamma; - if (png_get_gAMA(png_ptr, info_ptr, &image_gamma)) - png_set_gamma(png_ptr, screen_gamma, image_gamma); - else - png_set_gamma(png_ptr, screen_gamma, 0.45455); - } - - /* Dither RGB files down to 8 bit palette or reduce palettes - * to the number of colors available on your screen. - */ - if (color_type & PNG_COLOR_MASK_COLOR) - { - int num_palette; - png_colorp palette; - - /* This reduces the image to the application supplied palette */ - if (/* We have our own palette */) - { - /* An array of colors to which the image should be dithered */ - png_color std_color_cube[MAX_SCREEN_COLORS]; - - png_set_dither(png_ptr, std_color_cube, MAX_SCREEN_COLORS, - MAX_SCREEN_COLORS, png_uint_16p_NULL, 0); - } - /* This reduces the image to the palette supplied in the file */ - else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)) - { - png_uint_16p histogram = NULL; - - png_get_hIST(png_ptr, info_ptr, &histogram); - - png_set_dither(png_ptr, palette, num_palette, - max_screen_colors, histogram, 0); - } - } - - /* Invert monochrome files to have 0 as white and 1 as black */ - png_set_invert_mono(png_ptr); - - /* If you want to shift the pixel values from the range [0,255] or - * [0,65535] to the original [0,7] or [0,31], or whatever range the - * colors were originally in: - */ - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT)) - { - png_color_8p sig_bit_p; - - png_get_sBIT(png_ptr, info_ptr, &sig_bit_p); - png_set_shift(png_ptr, sig_bit_p); - } - - /* Flip the RGB pixels to BGR (or RGBA to BGRA) */ - if (color_type & PNG_COLOR_MASK_COLOR) - png_set_bgr(png_ptr); - - /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ - png_set_swap_alpha(png_ptr); - - /* Swap bytes of 16 bit files to least significant byte first */ - png_set_swap(png_ptr); - - /* Add filler (or alpha) byte (before/after each RGB triplet) */ - png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER); - - /* Turn on interlace handling. REQUIRED if you are not using - * png_read_image(). To see how to handle interlacing passes, - * see the png_read_row() method below: - */ - number_passes = png_set_interlace_handling(png_ptr); - - /* Optional call to gamma correct and add the background to the palette - * and update info structure. REQUIRED if you are expecting libpng to - * update the palette for you (ie you selected such a transform above). - */ - png_read_update_info(png_ptr, info_ptr); - - /* Allocate the memory to hold the image using the fields of info_ptr. */ - - /* The easiest way to read the image: */ - png_bytep row_pointers[height]; - - /* Clear the pointer array */ - for (row = 0; row < height; row++) - row_pointers[row] = NULL; - - for (row = 0; row < height; row++) - row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr, - info_ptr)); - - /* Now it's time to read the image. One of these methods is REQUIRED */ -#ifdef entire /* Read the entire image in one go */ - png_read_image(png_ptr, row_pointers); - -#else no_entire /* Read the image one or more scanlines at a time */ - /* The other way to read images - deal with interlacing: */ - - for (pass = 0; pass < number_passes; pass++) - { -#ifdef single /* Read the image a single row at a time */ - for (y = 0; y < height; y++) - { - png_read_rows(png_ptr, &row_pointers[y], png_bytepp_NULL, 1); - } - -#else no_single /* Read the image several rows at a time */ - for (y = 0; y < height; y += number_of_rows) - { -#ifdef sparkle /* Read the image using the "sparkle" effect. */ - png_read_rows(png_ptr, &row_pointers[y], png_bytepp_NULL, - number_of_rows); -#else no_sparkle /* Read the image using the "rectangle" effect */ - png_read_rows(png_ptr, png_bytepp_NULL, &row_pointers[y], - number_of_rows); -#endif no_sparkle /* Use only one of these two methods */ - } - - /* If you want to display the image after every pass, do so here */ -#endif no_single /* Use only one of these two methods */ - } -#endif no_entire /* Use only one of these two methods */ - - /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ - png_read_end(png_ptr, info_ptr); -#endif hilevel - - /* At this point you have read the entire image */ - - /* Clean up after the read, and free any memory allocated - REQUIRED */ - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - - /* Close the file */ - fclose(fp); - - /* That's it */ - return (OK); -} - -/* Progressively read a file */ - -int -initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr) -{ - /* Create and initialize the png_struct with the desired error handler - * functions. If you want to use the default stderr and longjump method, - * you can supply NULL for the last three parameters. We also check that - * the library version is compatible in case we are using dynamically - * linked libraries. - */ - *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, - png_voidp user_error_ptr, user_error_fn, user_warning_fn); - - if (*png_ptr == NULL) - { - *info_ptr = NULL; - return (ERROR); - } - - *info_ptr = png_create_info_struct(png_ptr); - - if (*info_ptr == NULL) - { - png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL); - return (ERROR); - } - - if (setjmp(png_jmpbuf((*png_ptr)))) - { - png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL); - return (ERROR); - } - - /* This one's new. You will need to provide all three - * function callbacks, even if you aren't using them all. - * If you aren't using all functions, you can specify NULL - * parameters. Even when all three functions are NULL, - * you need to call png_set_progressive_read_fn(). - * These functions shouldn't be dependent on global or - * static variables if you are decoding several images - * simultaneously. You should store stream specific data - * in a separate struct, given as the second parameter, - * and retrieve the pointer from inside the callbacks using - * the function png_get_progressive_ptr(png_ptr). - */ - png_set_progressive_read_fn(*png_ptr, (void *)stream_data, - info_callback, row_callback, end_callback); - - return (OK); -} - -int -process_data(png_structp *png_ptr, png_infop *info_ptr, - png_bytep buffer, png_uint_32 length) -{ - if (setjmp(png_jmpbuf((*png_ptr)))) - { - /* Free the png_ptr and info_ptr memory on error */ - png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL); - return (ERROR); - } - - /* This one's new also. Simply give it chunks of data as - * they arrive from the data stream (in order, of course). - * On segmented machines, don't give it any more than 64K. - * The library seems to run fine with sizes of 4K, although - * you can give it much less if necessary (I assume you can - * give it chunks of 1 byte, but I haven't tried with less - * than 256 bytes yet). When this function returns, you may - * want to display any rows that were generated in the row - * callback, if you aren't already displaying them there. - */ - png_process_data(*png_ptr, *info_ptr, buffer, length); - return (OK); -} - -info_callback(png_structp png_ptr, png_infop info) -{ - /* Do any setup here, including setting any of the transformations - * mentioned in the Reading PNG files section. For now, you _must_ - * call either png_start_read_image() or png_read_update_info() - * after all the transformations are set (even if you don't set - * any). You may start getting rows before png_process_data() - * returns, so this is your last chance to prepare for that. - */ -} - -row_callback(png_structp png_ptr, png_bytep new_row, - png_uint_32 row_num, int pass) -{ - /* - * This function is called for every row in the image. If the - * image is interlaced, and you turned on the interlace handler, - * this function will be called for every row in every pass. - * - * In this function you will receive a pointer to new row data from - * libpng called new_row that is to replace a corresponding row (of - * the same data format) in a buffer allocated by your application. - * - * The new row data pointer "new_row" may be NULL, indicating there is - * no new data to be replaced (in cases of interlace loading). - * - * If new_row is not NULL then you need to call - * png_progressive_combine_row() to replace the corresponding row as - * shown below: - */ - - /* Get pointer to corresponding row in our - * PNG read buffer. - */ - png_bytep old_row = ((png_bytep *)our_data)[row_num]; - - /* If both rows are allocated then copy the new row - * data to the corresponding row data. - */ - if ((old_row != NULL) && (new_row != NULL)) - png_progressive_combine_row(png_ptr, old_row, new_row); - - /* - * The rows and passes are called in order, so you don't really - * need the row_num and pass, but I'm supplying them because it - * may make your life easier. - * - * For the non-NULL rows of interlaced images, you must call - * png_progressive_combine_row() passing in the new row and the - * old row, as demonstrated above. You can call this function for - * NULL rows (it will just return) and for non-interlaced images - * (it just does the png_memcpy for you) if it will make the code - * easier. Thus, you can just do this for all cases: - */ - - png_progressive_combine_row(png_ptr, old_row, new_row); - - /* where old_row is what was displayed for previous rows. Note - * that the first pass (pass == 0 really) will completely cover - * the old row, so the rows do not have to be initialized. After - * the first pass (and only for interlaced images), you will have - * to pass the current row as new_row, and the function will combine - * the old row and the new row. - */ -} - -end_callback(png_structp png_ptr, png_infop info) -{ - /* This function is called when the whole image has been read, - * including any chunks after the image (up to and including - * the IEND). You will usually have the same info chunk as you - * had in the header, although some data may have been added - * to the comments and time fields. - * - * Most people won't do much here, perhaps setting a flag that - * marks the image as finished. - */ -} - -/* Write a png file */ -void write_png(char *file_name /* , ... other image information ... */) -{ - FILE *fp; - png_structp png_ptr; - png_infop info_ptr; - png_colorp palette; - - /* Open the file */ - fp = fopen(file_name, "wb"); - if (fp == NULL) - return (ERROR); - - /* Create and initialize the png_struct with the desired error handler - * functions. If you want to use the default stderr and longjump method, - * you can supply NULL for the last three parameters. We also check that - * the library version is compatible with the one used at compile time, - * in case we are using dynamically linked libraries. REQUIRED. - */ - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, - png_voidp user_error_ptr, user_error_fn, user_warning_fn); - - if (png_ptr == NULL) - { - fclose(fp); - return (ERROR); - } - - /* Allocate/initialize the image information data. REQUIRED */ - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) - { - fclose(fp); - png_destroy_write_struct(&png_ptr, png_infopp_NULL); - return (ERROR); - } - - /* Set error handling. REQUIRED if you aren't supplying your own - * error handling functions in the png_create_write_struct() call. - */ - if (setjmp(png_jmpbuf(png_ptr))) - { - /* If we get here, we had a problem writing the file */ - fclose(fp); - png_destroy_write_struct(&png_ptr, &info_ptr); - return (ERROR); - } - - /* One of the following I/O initialization functions is REQUIRED */ - -#ifdef streams /* I/O initialization method 1 */ - /* Set up the output control if you are using standard C streams */ - png_init_io(png_ptr, fp); - -#else no_streams /* I/O initialization method 2 */ - /* If you are using replacement write functions, instead of calling - * png_init_io() here you would call - */ - png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn, - user_IO_flush_function); - /* where user_io_ptr is a structure you want available to the callbacks */ -#endif no_streams /* Only use one initialization method */ - -#ifdef hilevel - /* This is the easy way. Use it if you already have all the - * image info living in the structure. You could "|" many - * PNG_TRANSFORM flags into the png_transforms integer here. - */ - png_write_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL); - -#else - /* This is the hard way */ - - /* Set the image information here. Width and height are up to 2^31, - * bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on - * the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY, - * PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB, - * or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or - * PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST - * currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED - */ - png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???, - PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - /* Set the palette if there is one. REQUIRED for indexed-color images */ - palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH - * png_sizeof(png_color)); - /* ... Set palette colors ... */ - png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH); - /* You must not free palette here, because png_set_PLTE only makes a link to - * the palette that you malloced. Wait until you are about to destroy - * the png structure. - */ - - /* Optional significant bit (sBIT) chunk */ - png_color_8 sig_bit; - /* If we are dealing with a grayscale image then */ - sig_bit.gray = true_bit_depth; - /* Otherwise, if we are dealing with a color image then */ - sig_bit.red = true_red_bit_depth; - sig_bit.green = true_green_bit_depth; - sig_bit.blue = true_blue_bit_depth; - /* If the image has an alpha channel then */ - sig_bit.alpha = true_alpha_bit_depth; - png_set_sBIT(png_ptr, info_ptr, &sig_bit); - - - /* Optional gamma chunk is strongly suggested if you have any guess - * as to the correct gamma of the image. - */ - png_set_gAMA(png_ptr, info_ptr, gamma); - - /* Optionally write comments into the image */ - text_ptr[0].key = "Title"; - text_ptr[0].text = "Mona Lisa"; - text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE; - text_ptr[1].key = "Author"; - text_ptr[1].text = "Leonardo DaVinci"; - text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE; - text_ptr[2].key = "Description"; - text_ptr[2].text = "<long text>"; - text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt; -#ifdef PNG_iTXt_SUPPORTED - text_ptr[0].lang = NULL; - text_ptr[1].lang = NULL; - text_ptr[2].lang = NULL; -#endif - png_set_text(png_ptr, info_ptr, text_ptr, 3); - - /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */ - - /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored - * on read and, if your application chooses to write them, they must - * be written in accordance with the sRGB profile - */ - - /* Write the file header information. REQUIRED */ - png_write_info(png_ptr, info_ptr); - - /* If you want, you can write the info in two steps, in case you need to - * write your private chunk ahead of PLTE: - * - * png_write_info_before_PLTE(write_ptr, write_info_ptr); - * write_my_chunk(); - * png_write_info(png_ptr, info_ptr); - * - * However, given the level of known- and unknown-chunk support in 1.2.0 - * and up, this should no longer be necessary. - */ - - /* Once we write out the header, the compression type on the text - * chunks gets changed to PNG_TEXT_COMPRESSION_NONE_WR or - * PNG_TEXT_COMPRESSION_zTXt_WR, so it doesn't get written out again - * at the end. - */ - - /* Set up the transformations you want. Note that these are - * all optional. Only call them if you want them. - */ - - /* Invert monochrome pixels */ - png_set_invert_mono(png_ptr); - - /* Shift the pixels up to a legal bit depth and fill in - * as appropriate to correctly scale the image. - */ - png_set_shift(png_ptr, &sig_bit); - - /* Pack pixels into bytes */ - png_set_packing(png_ptr); - - /* Swap location of alpha bytes from ARGB to RGBA */ - png_set_swap_alpha(png_ptr); - - /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into - * RGB (4 channels -> 3 channels). The second parameter is not used. - */ - png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); - - /* Flip BGR pixels to RGB */ - png_set_bgr(png_ptr); - - /* Swap bytes of 16-bit files to most significant byte first */ - png_set_swap(png_ptr); - - /* Swap bits of 1, 2, 4 bit packed pixel formats */ - png_set_packswap(png_ptr); - - /* Turn on interlace handling if you are not using png_write_image() */ - if (interlacing) - number_passes = png_set_interlace_handling(png_ptr); - else - number_passes = 1; - - /* The easiest way to write the image (you may have a different memory - * layout, however, so choose what fits your needs best). You need to - * use the first method if you aren't handling interlacing yourself. - */ - png_uint_32 k, height, width; - png_byte image[height][width*bytes_per_pixel]; - png_bytep row_pointers[height]; - - if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep)) - png_error (png_ptr, "Image is too tall to process in memory"); - - for (k = 0; k < height; k++) - row_pointers[k] = image + k*width*bytes_per_pixel; - - /* One of the following output methods is REQUIRED */ - -#ifdef entire /* Write out the entire image data in one call */ - png_write_image(png_ptr, row_pointers); - - /* The other way to write the image - deal with interlacing */ - -#else no_entire /* Write out the image data by one or more scanlines */ - - /* The number of passes is either 1 for non-interlaced images, - * or 7 for interlaced images. - */ - for (pass = 0; pass < number_passes; pass++) - { - /* Write a few rows at a time. */ - png_write_rows(png_ptr, &row_pointers[first_row], number_of_rows); - - /* If you are only writing one row at a time, this works */ - for (y = 0; y < height; y++) - png_write_rows(png_ptr, &row_pointers[y], 1); - } -#endif no_entire /* Use only one output method */ - - /* You can write optional chunks like tEXt, zTXt, and tIME at the end - * as well. Shouldn't be necessary in 1.2.0 and up as all the public - * chunks are supported and you can use png_set_unknown_chunks() to - * register unknown chunks into the info structure to be written out. - */ - - /* It is REQUIRED to call this to finish writing the rest of the file */ - png_write_end(png_ptr, info_ptr); -#endif hilevel - - /* If you png_malloced a palette, free it here (don't free info_ptr->palette, - * as recommended in versions 1.0.5m and earlier of this example; if - * libpng mallocs info_ptr->palette, libpng will free it). If you - * allocated it with malloc() instead of png_malloc(), use free() instead - * of png_free(). - */ - png_free(png_ptr, palette); - palette = NULL; - - /* Similarly, if you png_malloced any data that you passed in with - * png_set_something(), such as a hist or trans array, free it here, - * when you can be sure that libpng is through with it. - */ - png_free(png_ptr, trans); - trans = NULL; - /* Whenever you use png_free() it is a good idea to set the pointer to - * NULL in case your application inadvertently tries to png_free() it - * again. When png_free() sees a NULL it returns without action, thus - * avoiding the double-free security problem. - */ - - /* Clean up after the write, and free any memory allocated */ - png_destroy_write_struct(&png_ptr, &info_ptr); - - /* Close the file */ - fclose(fp); - - /* That's it */ - return (OK); -} - -#endif /* if 0 */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpng.3 b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpng.3 deleted file mode 100644 index 93139a7..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpng.3 +++ /dev/null @@ -1,4490 +0,0 @@ -.TH LIBPNG 3 "June 26, 2010" -.SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.44 -.SH SYNOPSIS -\fI\fB - -\fB#include <png.h>\fP - -\fI\fB - -\fBpng_uint_32 png_access_version_number \fI(void\fP\fB);\fP - -\fI\fB - -\fBint png_check_sig (png_bytep \fP\fIsig\fP\fB, int \fInum\fP\fB);\fP - -\fI\fB - -\fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP - -\fI\fB - -\fBvoid png_chunk_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP - -\fI\fB - -\fBvoid png_convert_from_struct_tm (png_timep \fP\fIptime\fP\fB, struct tm FAR * \fIttime\fP\fB);\fP - -\fI\fB - -\fBvoid png_convert_from_time_t (png_timep \fP\fIptime\fP\fB, time_t \fIttime\fP\fB);\fP - -\fI\fB - -\fBpng_charp png_convert_to_rfc1123 (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fIptime\fP\fB);\fP - -\fI\fB - -\fBpng_infop png_create_info_struct (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_structp png_create_read_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP - -\fI\fB - -\fBpng_structp png_create_read_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP - -\fI\fB - -\fBpng_structp png_create_write_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP - -\fI\fB - -\fBpng_structp png_create_write_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP - -\fI\fB - -\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP - -\fI\fB - -\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP - -\fI\fB - -\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP - -\fI\fB - -\fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_destroy_read_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fP\fIinfo_ptr_ptr\fP\fB, png_infopp \fIend_info_ptr_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_destroy_write_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP - -\fI\fB - -\fBvoid png_free (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_free_chunk_list (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_free_default(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_free_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fInum\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fI*background\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_channels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*white_x\fP\fB, double \fP\fI*white_y\fP\fB, double \fP\fI*red_x\fP\fB, double \fP\fI*red_y\fP\fB, double \fP\fI*green_x\fP\fB, double \fP\fI*green_y\fP\fB, double \fP\fI*blue_x\fP\fB, double \fI*blue_y\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*white_x\fP\fB, png_uint_32 \fP\fI*white_y\fP\fB, png_uint_32 \fP\fI*red_x\fP\fB, png_uint_32 \fP\fI*red_y\fP\fB, png_uint_32 \fP\fI*green_x\fP\fB, png_uint_32 \fP\fI*green_y\fP\fB, png_uint_32 \fP\fI*blue_x\fP\fB, png_uint_32 \fI*blue_y\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_color_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_compression_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_copyright (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_error_ptr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_filter_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fI*file_gamma\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fI*int_file_gamma\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_header_ver (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_header_version (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_charpp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*width\fP\fB, png_uint_32 \fP\fI*height\fP\fB, int \fP\fI*bit_depth\fP\fB, int \fP\fI*color_type\fP\fB, int \fP\fI*interlace_type\fP\fB, int \fP\fI*compression_type\fP\fB, int \fI*filter_type\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_image_height (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_image_width (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fB#if \fI!defined(PNG_1_0_X) - -\fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP - -\fI\fB#endif - -\fI\fB - -\fBpng_byte png_get_interlace_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_libpng_ver (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_mem_ptr(png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fI*purpose\fP\fB, png_int_32 \fP\fI*X0\fP\fB, png_int_32 \fP\fI*X1\fP\fB, int \fP\fI*type\fP\fB, int \fP\fI*nparams\fP\fB, png_charp \fP\fI*units\fP\fB, png_charpp \fI*params\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP - -\fI\fB - -\fBfloat png_get_pixel_aspect_ratio (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_progressive_ptr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fI*palette\fP\fB, int \fI*num_palette\fP\fB);\fP - -\fI\fB - -\fBpng_byte png_get_rgb_to_gray_status (png_structp \fIpng_ptr) - -\fBpng_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_bytepp png_get_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fI*sig_bit\fP\fB);\fP - -\fI\fB - -\fBpng_bytep png_get_signature (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fI*splt_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fI*intent\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fI*text_ptr\fP\fB, int \fI*num_text\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fI*mod_time\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fI*trans\fP\fB, int \fP\fI*num_trans\fP\fB, png_color_16p \fI*trans_values\fP\fB);\fP - -\fI\fB - -\fB#if \fI!defined(PNG_1_0_X) - -\fBpng_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_uint_31 (png_bytep \fIbuf\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_uint_32 (png_bytep \fIbuf\fP\fB);\fP - -\fI\fB#endif - -\fI\fB - -\fBpng_uint_32 png_get_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkpp \fIunknowns\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_user_chunk_ptr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_user_height_max( png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_user_width_max (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP - -\fI\fB - -\fBpng_int_32 png_get_x_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_int_32 png_get_x_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_x_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_int_32 png_get_y_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_int_32 png_get_y_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_y_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_get_compression_buffer_size (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBint png_handle_as_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP - -\fI\fB - -\fBvoid png_init_io (png_structp \fP\fIpng_ptr\fP\fB, FILE \fI*fp\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_info_init (png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_info_init_2 (png_infopp \fP\fIptr_ptr\fP\fB, png_size_t \fIpng_info_struct_size\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_malloc_default(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP - -\fI\fB - -\fBvoidp png_memcpy (png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_size_t \fIsize\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_memcpy_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_uint_32 \fIsize\fP\fB);\fP - -\fI\fB - -\fBvoidp png_memset (png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_size_t \fIsize\fP\fB);\fP - -\fI\fB - -\fBpng_voidp png_memset_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_uint_32 \fIsize\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_permit_empty_plte (png_structp \fP\fIpng_ptr\fP\fB, int \fIempty_plte_permitted\fP\fB);\fP - -\fI\fB - -\fBvoid png_process_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_size\fP\fB);\fP - -\fI\fB - -\fBvoid png_progressive_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIold_row\fP\fB, png_bytep \fInew_row\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_read_init (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_read_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fIdisplay_row\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_bytepp \fP\fIdisplay_row\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP - -\fI\fB - -\fBvoid png_read_update_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fB#if \fI!defined(PNG_1_0_X) - -\fBpng_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP - -\fI\fB - -\fBvoid png_save_uint_16 (png_bytep \fP\fIbuf\fP\fB, unsigned int \fIi\fP\fB);\fP - -\fI\fB - -\fBvoid png_save_uint_32 (png_bytep \fP\fIbuf\fP\fB, png_uint_32 \fIi\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP - -\fI\fB#endif - -\fI\fB - -\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_bgr (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fIbackground\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_method (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_crc_action (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcrit_action\fP\fB, int \fIancil_action\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_dither (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_dither\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_error_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarning_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_expand (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_expand_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_filler (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_filter (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImethod\fP\fB, int \fIfilters\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_filter_heuristics (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_doublep \fP\fIfilter_weights\fP\fB, png_doublep \fIfilter_costs\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_flush (png_structp \fP\fIpng_ptr\fP\fB, int \fInrows\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_gamma (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIscreen_gamma\fP\fB, double \fIdefault_file_gamma\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIfile_gamma\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_gray_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP - -\fI\fB - -\fBint png_set_interlace_handling (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_invalid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fImask\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_invert_alpha (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_invert_mono (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_keep_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIkeep\fP\fB, png_bytep \fP\fIchunk_list\fP\fB, int \fInum_chunks\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_mem_fn(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_packing (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_packswap (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_palette_to_rgb(png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIres_x\fP\fB, png_uint_32 \fP\fIres_y\fP\fB, int \fIunit_type\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_progressive_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIprogressive_ptr\fP\fB, png_progressive_info_ptr \fP\fIinfo_fn\fP\fB, png_progressive_row_ptr \fP\fIrow_fn\fP\fB, png_progressive_end_ptr \fIend_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fIread_data_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_read_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_read_status_ptr \fIread_row_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_read_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIread_user_transform_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_rgb_to_gray (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIerror_action\fP\fB, double \fP\fIred\fP\fB, double \fIgreen\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_rgb_to_gray_fixed (png_structp \fP\fIpng_ptr\fP\fB, int error_action png_fixed_point \fP\fIred\fP\fB, png_fixed_point \fIgreen\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytepp \fIrow_pointers\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fIsig_bit\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_shift (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fItrue_bits\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sig_bytes (png_structp \fP\fIpng_ptr\fP\fB, int \fInum_bytes\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fP\fIsplt_ptr\fP\fB, int \fInum_spalettes\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_strip_16 (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_strip_alpha (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_swap_alpha (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fP\fInum_trans\fP\fB, png_color_16p \fItrans_values\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_tRNS_to_alpha(png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBpng_uint_32 png_set_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkp \fP\fIunknowns\fP\fB, int \fP\fInum\fP\fB, int \fIlocation\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_unknown_chunk_location(png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIchunk\fP\fB, int \fIlocation\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_read_user_chunk_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_chunk_ptr\fP\fB, png_user_chunk_ptr \fIread_user_chunk_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_write_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fP\fIwrite_data_fn\fP\fB, png_flush_ptr \fIoutput_flush_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_write_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_write_status_ptr \fIwrite_row_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_write_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIwrite_user_transform_fn\fP\fB);\fP - -\fI\fB - -\fBvoid png_set_compression_buffer_size(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP - -\fI\fB - -\fBint png_sig_cmp (png_bytep \fP\fIsig\fP\fB, png_size_t \fP\fIstart\fP\fB, png_size_t \fInum_to_check\fP\fB);\fP - -\fI\fB - -\fBvoid png_start_read_image (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_chunk_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_chunk_end (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_chunk_start (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_flush (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_write_init (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fBDEPRECATED: void png_write_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_info_before_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fBvoid png_write_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP - -\fI\fB - -\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP - -\fI\fB - -\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP - -\fI\fB - -.SH DESCRIPTION -The -.I libpng -library supports encoding, decoding, and various manipulations of -the Portable Network Graphics (PNG) format image files. It uses the -.IR zlib(3) -compression library. -Following is a copy of the libpng.txt file that accompanies libpng. -.SH LIBPNG.TXT -libpng.txt - A description on how to use and modify libpng - - libpng version 1.2.44 - June 26, 2010 - Updated and distributed by Glenn Randers-Pehrson - <glennrp at users.sourceforge.net> - Copyright (c) 1998-2009 Glenn Randers-Pehrson - - This document is released under the libpng license. - For conditions of distribution and use, see the disclaimer - and license in png.h - - Based on: - - libpng versions 0.97, January 1998, through 1.2.44 - June 26, 2010 - Updated and distributed by Glenn Randers-Pehrson - Copyright (c) 1998-2009 Glenn Randers-Pehrson - - libpng 1.0 beta 6 version 0.96 May 28, 1997 - Updated and distributed by Andreas Dilger - Copyright (c) 1996, 1997 Andreas Dilger - - libpng 1.0 beta 2 - version 0.88 January 26, 1996 - For conditions of distribution and use, see copyright - notice in png.h. Copyright (c) 1995, 1996 Guy Eric - Schalnat, Group 42, Inc. - - Updated/rewritten per request in the libpng FAQ - Copyright (c) 1995, 1996 Frank J. T. Wojcik - December 18, 1995 & January 20, 1996 - -.SH I. Introduction - -This file describes how to use and modify the PNG reference library -(known as libpng) for your own use. There are five sections to this -file: introduction, structures, reading, writing, and modification and -configuration notes for various special platforms. In addition to this -file, example.c is a good starting point for using the library, as -it is heavily commented and should include everything most people -will need. We assume that libpng is already installed; see the -INSTALL file for instructions on how to install libpng. - -For examples of libpng usage, see the files "example.c", "pngtest.c", -and the files in the "contrib" directory, all of which are included in -the libpng distribution. - -Libpng was written as a companion to the PNG specification, as a way -of reducing the amount of time and effort it takes to support the PNG -file format in application programs. - -The PNG specification (second edition), November 2003, is available as -a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at -<http://www.w3.org/TR/2003/REC-PNG-20031110/ -The W3C and ISO documents have identical technical content. - -The PNG-1.2 specification is available at -<http://www.libpng.org/pub/png/documents/>. It is technically equivalent -to the PNG specification (second edition) but has some additional material. - -The PNG-1.0 specification is available -as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a -W3C Recommendation <http://www.w3.org/TR/REC.png.html>. - -Some additional chunks are described in the special-purpose public chunks -documents at <http://www.libpng.org/pub/png/documents/>. - -Other information -about PNG, and the latest version of libpng, can be found at the PNG home -page, <http://www.libpng.org/pub/png/>. - -Most users will not have to modify the library significantly; advanced -users may want to modify it more. All attempts were made to make it as -complete as possible, while keeping the code easy to understand. -Currently, this library only supports C. Support for other languages -is being considered. - -Libpng has been designed to handle multiple sessions at one time, -to be easily modifiable, to be portable to the vast majority of -machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy -to use. The ultimate goal of libpng is to promote the acceptance of -the PNG file format in whatever way possible. While there is still -work to be done (see the TODO file), libpng should cover the -majority of the needs of its users. - -Libpng uses zlib for its compression and decompression of PNG files. -Further information about zlib, and the latest version of zlib, can -be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>. -The zlib compression utility is a general purpose utility that is -useful for more than PNG files, and can be used without libpng. -See the documentation delivered with zlib for more details. -You can usually find the source files for the zlib utility wherever you -find the libpng source files. - -Libpng is thread safe, provided the threads are using different -instances of the structures. Each thread should have its own -png_struct and png_info instances, and thus its own image. -Libpng does not protect itself against two threads using the -same instance of a structure. - -.SH II. Structures - -There are two main structures that are important to libpng, png_struct -and png_info. The first, png_struct, is an internal structure that -will not, for the most part, be used by a user except as the first -variable passed to every libpng function call. - -The png_info structure is designed to provide information about the -PNG file. At one time, the fields of png_info were intended to be -directly accessible to the user. However, this tended to cause problems -with applications using dynamically loaded libraries, and as a result -a set of interface functions for png_info (the png_get_*() and png_set_*() -functions) was developed. The fields of png_info are still available for -older applications, but it is suggested that applications use the new -interfaces if at all possible. - -Applications that do make direct access to the members of png_struct (except -for png_ptr->jmpbuf) must be recompiled whenever the library is updated, -and applications that make direct access to the members of png_info must -be recompiled if they were compiled or loaded with libpng version 1.0.6, -in which the members were in a different order. In version 1.0.7, the -members of the png_info structure reverted to the old order, as they were -in versions 0.97c through 1.0.5. Starting with version 2.0.0, both -structures are going to be hidden, and the contents of the structures will -only be accessible through the png_get/png_set functions. - -The png.h header file is an invaluable reference for programming with libpng. -And while I'm on the topic, make sure you include the libpng header file: - -#include <png.h> - -.SH III. Reading - -We'll now walk you through the possible functions to call when reading -in a PNG file sequentially, briefly explaining the syntax and purpose -of each one. See example.c and png.h for more detail. While -progressive reading is covered in the next section, you will still -need some of the functions discussed in this section to read a PNG -file. - -.SS Setup - -You will want to do the I/O initialization(*) before you get into libpng, -so if it doesn't work, you don't have much to undo. Of course, you -will also want to insure that you are, in fact, dealing with a PNG -file. Libpng provides a simple check to see if a file is a PNG file. -To use it, pass in the first 1 to 8 bytes of the file to the function -png_sig_cmp(), and it will return 0 (false) if the bytes match the -corresponding bytes of the PNG signature, or nonzero (true) otherwise. -Of course, the more bytes you pass in, the greater the accuracy of the -prediction. - -If you are intending to keep the file pointer open for use in libpng, -you must ensure you don't read more than 8 bytes from the beginning -of the file, and you also have to make a call to png_set_sig_bytes_read() -with the number of bytes you read from the beginning. Libpng will -then only check the bytes (if any) that your program didn't read. - -(*): If you are not using the standard I/O functions, you will need -to replace them with custom functions. See the discussion under -Customizing libpng. - - - FILE *fp = fopen(file_name, "rb"); - if (!fp) - { - return (ERROR); - } - fread(header, 1, number, fp); - is_png = !png_sig_cmp(header, 0, number); - if (!is_png) - { - return (NOT_PNG); - } - - -Next, png_struct and png_info need to be allocated and initialized. In -order to ensure that the size of these structures is correct even with a -dynamically linked libpng, there are functions to initialize and -allocate the structures. We also pass the library version, optional -pointers to error handling functions, and a pointer to a data struct for -use by the error functions, if necessary (the pointer and functions can -be NULL if the default error handlers are to be used). See the section -on Changes to Libpng below regarding the old initialization functions. -The structure allocation functions quietly return NULL if they fail to -create the structure, so your application should check for that. - - png_structp png_ptr = png_create_read_struct - (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr, - user_error_fn, user_warning_fn); - if (!png_ptr) - return (ERROR); - - png_infop info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) - { - png_destroy_read_struct(&png_ptr, - (png_infopp)NULL, (png_infopp)NULL); - return (ERROR); - } - - png_infop end_info = png_create_info_struct(png_ptr); - if (!end_info) - { - png_destroy_read_struct(&png_ptr, &info_ptr, - (png_infopp)NULL); - return (ERROR); - } - -If you want to use your own memory allocation routines, -define PNG_USER_MEM_SUPPORTED and use -png_create_read_struct_2() instead of png_create_read_struct(): - - png_structp png_ptr = png_create_read_struct_2 - (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr, - user_error_fn, user_warning_fn, (png_voidp) - user_mem_ptr, user_malloc_fn, user_free_fn); - -The error handling routines passed to png_create_read_struct() -and the memory alloc/free routines passed to png_create_struct_2() -are only necessary if you are not using the libpng supplied error -handling and memory alloc/free functions. - -When libpng encounters an error, it expects to longjmp back -to your routine. Therefore, you will need to call setjmp and pass -your png_jmpbuf(png_ptr). If you read the file from different -routines, you will need to update the jmpbuf field every time you enter -a new routine that will call a png_*() function. - -See your documentation of setjmp/longjmp for your compiler for more -information on setjmp/longjmp. See the discussion on libpng error -handling in the Customizing Libpng section below for more information -on the libpng error handling. If an error occurs, and libpng longjmp's -back to your setjmp, you will want to call png_destroy_read_struct() to -free any memory. - - if (setjmp(png_jmpbuf(png_ptr))) - { - png_destroy_read_struct(&png_ptr, &info_ptr, - &end_info); - fclose(fp); - return (ERROR); - } - -If you would rather avoid the complexity of setjmp/longjmp issues, -you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case -errors will result in a call to PNG_ABORT() which defaults to abort(). - -Now you need to set up the input code. The default for libpng is to -use the C function fread(). If you use this, you will need to pass a -valid FILE * in the function png_init_io(). Be sure that the file is -opened in binary mode. If you wish to handle reading data in another -way, you need not call the png_init_io() function, but you must then -implement the libpng I/O methods discussed in the Customizing Libpng -section below. - - png_init_io(png_ptr, fp); - -If you had previously opened the file and read any of the signature from -the beginning in order to see if this was a PNG file, you need to let -libpng know that there are some bytes missing from the start of the file. - - png_set_sig_bytes(png_ptr, number); - -.SS Setting up callback code - -You can set up a callback function to handle any unknown chunks in the -input stream. You must supply the function - - read_chunk_callback(png_ptr ptr, - png_unknown_chunkp chunk); - { - /* The unknown chunk structure contains your - chunk data, along with similar data for any other - unknown chunks: */ - - png_byte name[5]; - png_byte *data; - png_size_t size; - - /* Note that libpng has already taken care of - the CRC handling */ - - /* put your code here. Search for your chunk in the - unknown chunk structure, process it, and return one - of the following: */ - - return (-n); /* chunk had an error */ - return (0); /* did not recognize */ - return (n); /* success */ - } - -(You can give your function another name that you like instead of -"read_chunk_callback") - -To inform libpng about your function, use - - png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr, - read_chunk_callback); - -This names not only the callback function, but also a user pointer that -you can retrieve with - - png_get_user_chunk_ptr(png_ptr); - -If you call the png_set_read_user_chunk_fn() function, then all unknown -chunks will be saved when read, in case your callback function will need -one or more of them. This behavior can be changed with the -png_set_keep_unknown_chunks() function, described below. - -At this point, you can set up a callback function that will be -called after each row has been read, which you can use to control -a progress meter or the like. It's demonstrated in pngtest.c. -You must supply a function - - void read_row_callback(png_ptr ptr, png_uint_32 row, - int pass); - { - /* put your code here */ - } - -(You can give it another name that you like instead of "read_row_callback") - -To inform libpng about your function, use - - png_set_read_status_fn(png_ptr, read_row_callback); - -.SS Unknown-chunk handling - -Now you get to set the way the library processes unknown chunks in the -input PNG stream. Both known and unknown chunks will be read. Normal -behavior is that known chunks will be parsed into information in -various info_ptr members while unknown chunks will be discarded. This -behavior can be wasteful if your application will never use some known -chunk types. To change this, you can call: - - png_set_keep_unknown_chunks(png_ptr, keep, - chunk_list, num_chunks); - keep - 0: default unknown chunk handling - 1: ignore; do not keep - 2: keep only if safe-to-copy - 3: keep even if unsafe-to-copy - You can use these definitions: - PNG_HANDLE_CHUNK_AS_DEFAULT 0 - PNG_HANDLE_CHUNK_NEVER 1 - PNG_HANDLE_CHUNK_IF_SAFE 2 - PNG_HANDLE_CHUNK_ALWAYS 3 - chunk_list - list of chunks affected (a byte string, - five bytes per chunk, NULL or '\0' if - num_chunks is 0) - num_chunks - number of chunks affected; if 0, all - unknown chunks are affected. If nonzero, - only the chunks in the list are affected - -Unknown chunks declared in this way will be saved as raw data onto a -list of png_unknown_chunk structures. If a chunk that is normally -known to libpng is named in the list, it will be handled as unknown, -according to the "keep" directive. If a chunk is named in successive -instances of png_set_keep_unknown_chunks(), the final instance will -take precedence. The IHDR and IEND chunks should not be named in -chunk_list; if they are, libpng will process them normally anyway. - -Here is an example of the usage of png_set_keep_unknown_chunks(), -where the private "vpAg" chunk will later be processed by a user chunk -callback function: - - png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'}; - - #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - png_byte unused_chunks[]= - { - 104, 73, 83, 84, (png_byte) '\0', /* hIST */ - 105, 84, 88, 116, (png_byte) '\0', /* iTXt */ - 112, 67, 65, 76, (png_byte) '\0', /* pCAL */ - 115, 67, 65, 76, (png_byte) '\0', /* sCAL */ - 115, 80, 76, 84, (png_byte) '\0', /* sPLT */ - 116, 73, 77, 69, (png_byte) '\0', /* tIME */ - }; - #endif - - ... - - #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) - /* ignore all unknown chunks: */ - png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0); - /* except for vpAg: */ - png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1); - /* also ignore unused known chunks: */ - png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks, - (int)sizeof(unused_chunks)/5); - #endif - -.SS User limits - -The PNG specification allows the width and height of an image to be as -large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns. -Since very few applications really need to process such large images, -we have imposed an arbitrary 1-million limit on rows and columns. -Larger images will be rejected immediately with a png_error() call. If -you wish to override this limit, you can use - - png_set_user_limits(png_ptr, width_max, height_max); - -to set your own limits, or use width_max = height_max = 0x7fffffffL -to allow all valid dimensions (libpng may reject some very large images -anyway because of potential buffer overflow conditions). - -You should put this statement after you create the PNG structure and -before calling png_read_info(), png_read_png(), or png_process_data(). -If you need to retrieve the limits that are being applied, use - - width_max = png_get_user_width_max(png_ptr); - height_max = png_get_user_height_max(png_ptr); - -The PNG specification sets no limit on the number of ancillary chunks -allowed in a PNG datastream. You can impose a limit on the total number -of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with - - png_set_chunk_cache_max(png_ptr, user_chunk_cache_max); - -where 0x7fffffffL means unlimited. You can retrieve this limit with - - chunk_cache_max = png_get_chunk_cache_max(png_ptr); - -This limit also applies to the number of buffers that can be allocated -by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks. - -.SS The high-level read interface - -At this point there are two ways to proceed; through the high-level -read interface, or through a sequence of low-level read operations. -You can use the high-level interface if (a) you are willing to read -the entire image into memory, and (b) the input transformations -you want to do are limited to the following set: - - PNG_TRANSFORM_IDENTITY No transformation - PNG_TRANSFORM_STRIP_16 Strip 16-bit samples to - 8 bits - PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel - PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit - samples to bytes - PNG_TRANSFORM_PACKSWAP Change order of packed - pixels to LSB first - PNG_TRANSFORM_EXPAND Perform set_expand() - PNG_TRANSFORM_INVERT_MONO Invert monochrome images - PNG_TRANSFORM_SHIFT Normalize pixels to the - sBIT depth - PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA - to BGRA - PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA - to AG - PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity - to transparency - PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples - PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples - to RGB (or GA to RGBA) - -(This excludes setting a background color, doing gamma transformation, -dithering, and setting filler.) If this is the case, simply do this: - - png_read_png(png_ptr, info_ptr, png_transforms, NULL) - -where png_transforms is an integer containing the bitwise OR of some -set of transformation flags. This call is equivalent to png_read_info(), -followed the set of transformations indicated by the transform mask, -then png_read_image(), and finally png_read_end(). - -(The final parameter of this call is not yet used. Someday it might point -to transformation parameters required by some future input transform.) - -You must use png_transforms and not call any png_set_transform() functions -when you use png_read_png(). - -After you have called png_read_png(), you can retrieve the image data -with - - row_pointers = png_get_rows(png_ptr, info_ptr); - -where row_pointers is an array of pointers to the pixel data for each row: - - png_bytep row_pointers[height]; - -If you know your image size and pixel size ahead of time, you can allocate -row_pointers prior to calling png_read_png() with - - if (height > PNG_UINT_32_MAX/png_sizeof(png_byte)) - png_error (png_ptr, - "Image is too tall to process in memory"); - if (width > PNG_UINT_32_MAX/pixel_size) - png_error (png_ptr, - "Image is too wide to process in memory"); - row_pointers = png_malloc(png_ptr, - height*png_sizeof(png_bytep)); - for (int i=0; i<height, i++) - row_pointers[i]=NULL; /* security precaution */ - for (int i=0; i<height, i++) - row_pointers[i]=png_malloc(png_ptr, - width*pixel_size); - png_set_rows(png_ptr, info_ptr, &row_pointers); - -Alternatively you could allocate your image in one big block and define -row_pointers[i] to point into the proper places in your block. - -If you use png_set_rows(), the application is responsible for freeing -row_pointers (and row_pointers[i], if they were separately allocated). - -If you don't allocate row_pointers ahead of time, png_read_png() will -do it, and it'll be free'ed when you call png_destroy_*(). - -.SS The low-level read interface - -If you are going the low-level route, you are now ready to read all -the file information up to the actual image data. You do this with a -call to png_read_info(). - - png_read_info(png_ptr, info_ptr); - -This will process all chunks up to but not including the image data. - -.SS Querying the info structure - -Functions are used to get the information from the info_ptr once it -has been read. Note that these fields may not be completely filled -in until png_read_end() has read the chunk data following the image. - - png_get_IHDR(png_ptr, info_ptr, &width, &height, - &bit_depth, &color_type, &interlace_type, - &compression_type, &filter_method); - - width - holds the width of the image - in pixels (up to 2^31). - height - holds the height of the image - in pixels (up to 2^31). - bit_depth - holds the bit depth of one of the - image channels. (valid values are - 1, 2, 4, 8, 16 and depend also on - the color_type. See also - significant bits (sBIT) below). - color_type - describes which color/alpha channels - are present. - PNG_COLOR_TYPE_GRAY - (bit depths 1, 2, 4, 8, 16) - PNG_COLOR_TYPE_GRAY_ALPHA - (bit depths 8, 16) - PNG_COLOR_TYPE_PALETTE - (bit depths 1, 2, 4, 8) - PNG_COLOR_TYPE_RGB - (bit_depths 8, 16) - PNG_COLOR_TYPE_RGB_ALPHA - (bit_depths 8, 16) - - PNG_COLOR_MASK_PALETTE - PNG_COLOR_MASK_COLOR - PNG_COLOR_MASK_ALPHA - - filter_method - (must be PNG_FILTER_TYPE_BASE - for PNG 1.0, and can also be - PNG_INTRAPIXEL_DIFFERENCING if - the PNG datastream is embedded in - a MNG-1.0 datastream) - compression_type - (must be PNG_COMPRESSION_TYPE_BASE - for PNG 1.0) - interlace_type - (PNG_INTERLACE_NONE or - PNG_INTERLACE_ADAM7) - - Any or all of interlace_type, compression_type, or - filter_method can be NULL if you are - not interested in their values. - - Note that png_get_IHDR() returns 32-bit data into - the application's width and height variables. - This is an unsafe situation if these are 16-bit - variables. In such situations, the - png_get_image_width() and png_get_image_height() - functions described below are safer. - - width = png_get_image_width(png_ptr, - info_ptr); - height = png_get_image_height(png_ptr, - info_ptr); - bit_depth = png_get_bit_depth(png_ptr, - info_ptr); - color_type = png_get_color_type(png_ptr, - info_ptr); - filter_method = png_get_filter_type(png_ptr, - info_ptr); - compression_type = png_get_compression_type(png_ptr, - info_ptr); - interlace_type = png_get_interlace_type(png_ptr, - info_ptr); - - channels = png_get_channels(png_ptr, info_ptr); - channels - number of channels of info for the - color type (valid values are 1 (GRAY, - PALETTE), 2 (GRAY_ALPHA), 3 (RGB), - 4 (RGB_ALPHA or RGB + filler byte)) - rowbytes = png_get_rowbytes(png_ptr, info_ptr); - rowbytes - number of bytes needed to hold a row - - signature = png_get_signature(png_ptr, info_ptr); - signature - holds the signature read from the - file (if any). The data is kept in - the same offset it would be if the - whole signature were read (i.e. if an - application had already read in 4 - bytes of signature before starting - libpng, the remaining 4 bytes would - be in signature[4] through signature[7] - (see png_set_sig_bytes())). - -These are also important, but their validity depends on whether the chunk -has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and -png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the -data has been read, or zero if it is missing. The parameters to the -png_get_<chunk> are set directly if they are simple data types, or a -pointer into the info_ptr is returned for any complex types. - - png_get_PLTE(png_ptr, info_ptr, &palette, - &num_palette); - palette - the palette for the file - (array of png_color) - num_palette - number of entries in the palette - - png_get_gAMA(png_ptr, info_ptr, &gamma); - gamma - the gamma the file is written - at (PNG_INFO_gAMA) - - png_get_sRGB(png_ptr, info_ptr, &srgb_intent); - srgb_intent - the rendering intent (PNG_INFO_sRGB) - The presence of the sRGB chunk - means that the pixel data is in the - sRGB color space. This chunk also - implies specific values of gAMA and - cHRM. - - png_get_iCCP(png_ptr, info_ptr, &name, - &compression_type, &profile, &proflen); - name - The profile name. - compression - The compression type; always - PNG_COMPRESSION_TYPE_BASE for PNG 1.0. - You may give NULL to this argument to - ignore it. - profile - International Color Consortium color - profile data. May contain NULs. - proflen - length of profile data in bytes. - - png_get_sBIT(png_ptr, info_ptr, &sig_bit); - sig_bit - the number of significant bits for - (PNG_INFO_sBIT) each of the gray, - red, green, and blue channels, - whichever are appropriate for the - given color type (png_color_16) - - png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, - &trans_values); - trans - array of transparent - entries for palette (PNG_INFO_tRNS) - trans_values - graylevel or color sample values of - the single transparent color for - non-paletted images (PNG_INFO_tRNS) - num_trans - number of transparent entries - (PNG_INFO_tRNS) - - png_get_hIST(png_ptr, info_ptr, &hist); - (PNG_INFO_hIST) - hist - histogram of palette (array of - png_uint_16) - - png_get_tIME(png_ptr, info_ptr, &mod_time); - mod_time - time image was last modified - (PNG_VALID_tIME) - - png_get_bKGD(png_ptr, info_ptr, &background); - background - background color (PNG_VALID_bKGD) - valid 16-bit red, green and blue - values, regardless of color_type - - num_comments = png_get_text(png_ptr, info_ptr, - &text_ptr, &num_text); - num_comments - number of comments - text_ptr - array of png_text holding image - comments - text_ptr[i].compression - type of compression used - on "text" PNG_TEXT_COMPRESSION_NONE - PNG_TEXT_COMPRESSION_zTXt - PNG_ITXT_COMPRESSION_NONE - PNG_ITXT_COMPRESSION_zTXt - text_ptr[i].key - keyword for comment. Must contain - 1-79 characters. - text_ptr[i].text - text comments for current - keyword. Can be empty. - text_ptr[i].text_length - length of text string, - after decompression, 0 for iTXt - text_ptr[i].itxt_length - length of itxt string, - after decompression, 0 for tEXt/zTXt - text_ptr[i].lang - language of comment (empty - string for unknown). - text_ptr[i].lang_key - keyword in UTF-8 - (empty string for unknown). - Note that the itxt_length, lang, and lang_key - members of the text_ptr structure only exist - when the library is built with iTXt chunk support. - - num_text - number of comments (same as - num_comments; you can put NULL here - to avoid the duplication) - Note while png_set_text() will accept text, language, - and translated keywords that can be NULL pointers, the - structure returned by png_get_text will always contain - regular zero-terminated C strings. They might be - empty strings but they will never be NULL pointers. - - num_spalettes = png_get_sPLT(png_ptr, info_ptr, - &palette_ptr); - palette_ptr - array of palette structures holding - contents of one or more sPLT chunks - read. - num_spalettes - number of sPLT chunks read. - - png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y, - &unit_type); - offset_x - positive offset from the left edge - of the screen - offset_y - positive offset from the top edge - of the screen - unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER - - png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y, - &unit_type); - res_x - pixels/unit physical resolution in - x direction - res_y - pixels/unit physical resolution in - x direction - unit_type - PNG_RESOLUTION_UNKNOWN, - PNG_RESOLUTION_METER - - png_get_sCAL(png_ptr, info_ptr, &unit, &width, - &height) - unit - physical scale units (an integer) - width - width of a pixel in physical scale units - height - height of a pixel in physical scale units - (width and height are doubles) - - png_get_sCAL_s(png_ptr, info_ptr, &unit, &width, - &height) - unit - physical scale units (an integer) - width - width of a pixel in physical scale units - height - height of a pixel in physical scale units - (width and height are strings like "2.54") - - num_unknown_chunks = png_get_unknown_chunks(png_ptr, - info_ptr, &unknowns) - unknowns - array of png_unknown_chunk - structures holding unknown chunks - unknowns[i].name - name of unknown chunk - unknowns[i].data - data of unknown chunk - unknowns[i].size - size of unknown chunk's data - unknowns[i].location - position of chunk in file - - The value of "i" corresponds to the order in which the - chunks were read from the PNG file or inserted with the - png_set_unknown_chunks() function. - -The data from the pHYs chunk can be retrieved in several convenient -forms: - - res_x = png_get_x_pixels_per_meter(png_ptr, - info_ptr) - res_y = png_get_y_pixels_per_meter(png_ptr, - info_ptr) - res_x_and_y = png_get_pixels_per_meter(png_ptr, - info_ptr) - res_x = png_get_x_pixels_per_inch(png_ptr, - info_ptr) - res_y = png_get_y_pixels_per_inch(png_ptr, - info_ptr) - res_x_and_y = png_get_pixels_per_inch(png_ptr, - info_ptr) - aspect_ratio = png_get_pixel_aspect_ratio(png_ptr, - info_ptr) - - (Each of these returns 0 [signifying "unknown"] if - the data is not present or if res_x is 0; - res_x_and_y is 0 if res_x != res_y) - -The data from the oFFs chunk can be retrieved in several convenient -forms: - - x_offset = png_get_x_offset_microns(png_ptr, info_ptr); - y_offset = png_get_y_offset_microns(png_ptr, info_ptr); - x_offset = png_get_x_offset_inches(png_ptr, info_ptr); - y_offset = png_get_y_offset_inches(png_ptr, info_ptr); - - (Each of these returns 0 [signifying "unknown" if both - x and y are 0] if the data is not present or if the - chunk is present but the unit is the pixel) - -For more information, see the png_info definition in png.h and the -PNG specification for chunk contents. Be careful with trusting -rowbytes, as some of the transformations could increase the space -needed to hold a row (expand, filler, gray_to_rgb, etc.). -See png_read_update_info(), below. - -A quick word about text_ptr and num_text. PNG stores comments in -keyword/text pairs, one pair per chunk, with no limit on the number -of text chunks, and a 2^31 byte limit on their size. While there are -suggested keywords, there is no requirement to restrict the use to these -strings. It is strongly suggested that keywords and text be sensible -to humans (that's the point), so don't use abbreviations. Non-printing -symbols are not allowed. See the PNG specification for more details. -There is also no requirement to have text after the keyword. - -Keywords should be limited to 79 Latin-1 characters without leading or -trailing spaces, but non-consecutive spaces are allowed within the -keyword. It is possible to have the same keyword any number of times. -The text_ptr is an array of png_text structures, each holding a -pointer to a language string, a pointer to a keyword and a pointer to -a text string. The text string, language code, and translated -keyword may be empty or NULL pointers. The keyword/text -pairs are put into the array in the order that they are received. -However, some or all of the text chunks may be after the image, so, to -make sure you have read all the text chunks, don't mess with these -until after you read the stuff after the image. This will be -mentioned again below in the discussion that goes with png_read_end(). - -.SS Input transformations - -After you've read the header information, you can set up the library -to handle any special transformations of the image data. The various -ways to transform the data will be described in the order that they -should occur. This is important, as some of these change the color -type and/or bit depth of the data, and some others only work on -certain color types and bit depths. Even though each transformation -checks to see if it has data that it can do something with, you should -make sure to only enable a transformation if it will be valid for the -data. For example, don't swap red and blue on grayscale data. - -The colors used for the background and transparency values should be -supplied in the same format/depth as the current image data. They -are stored in the same format/depth as the image data in a bKGD or tRNS -chunk, so this is what libpng expects for this data. The colors are -transformed to keep in sync with the image data when an application -calls the png_read_update_info() routine (see below). - -Data will be decoded into the supplied row buffers packed into bytes -unless the library has been told to transform it into another format. -For example, 4 bit/pixel paletted or grayscale data will be returned -2 pixels/byte with the leftmost pixel in the high-order bits of the -byte, unless png_set_packing() is called. 8-bit RGB data will be stored -in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha() -is called to insert filler bytes, either before or after each RGB triplet. -16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant -byte of the color value first, unless png_set_strip_16() is called to -transform it to regular RGB RGB triplets, or png_set_filler() or -png_set_add alpha() is called to insert filler bytes, either before or -after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can -be modified with -png_set_filler(), png_set_add_alpha(), or png_set_strip_16(). - -The following code transforms grayscale images of less than 8 to 8 bits, -changes paletted images to RGB, and adds a full alpha channel if there is -transparency information in a tRNS chunk. This is most useful on -grayscale images with bit depths of 2 or 4 or if there is a multiple-image -viewing application that wishes to treat all images in the same way. - - if (color_type == PNG_COLOR_TYPE_PALETTE) - png_set_palette_to_rgb(png_ptr); - - if (color_type == PNG_COLOR_TYPE_GRAY && - bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr); - - if (png_get_valid(png_ptr, info_ptr, - PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr); - -These three functions are actually aliases for png_set_expand(), added -in libpng version 1.0.4, with the function names expanded to improve code -readability. In some future version they may actually do different -things. - -As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was -added. It expands the sample depth without changing tRNS to alpha. - -As of libpng version 1.2.44, not all possible expansions are supported. - -In the following table, the 01 means grayscale with depth<8, 31 means -indexed with depth<8, other numerals represent the color type, "T" means -the tRNS chunk is present, A means an alpha channel is present, and O -means tRNS or alpha is present but all pixels in the image are opaque. - - FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O - TO - 01 - - 31 - - 0 1 - - 0T - - 0O - - 2 GX - - 2T - - 2O - - 3 1 - - 3T - - 3O - - 4A T - - 4O - - 6A GX TX TX - - 6O GX TX - - -Within the matrix, - "-" means the transformation is not supported. - "X" means the transformation is obtained by png_set_expand(). - "1" means the transformation is obtained by - png_set_expand_gray_1_2_4_to_8 - "G" means the transformation is obtained by - png_set_gray_to_rgb(). - "P" means the transformation is obtained by - png_set_expand_palette_to_rgb(). - "T" means the transformation is obtained by - png_set_tRNS_to_alpha(). - -PNG can have files with 16 bits per channel. If you only can handle -8 bits per channel, this will strip the pixels down to 8 bit. - - if (bit_depth == 16) - png_set_strip_16(png_ptr); - -If, for some reason, you don't need the alpha channel on an image, -and you want to remove it rather than combining it with the background -(but the image author certainly had in mind that you *would* combine -it with the background, so that's what you should probably do): - - if (color_type & PNG_COLOR_MASK_ALPHA) - png_set_strip_alpha(png_ptr); - -In PNG files, the alpha channel in an image -is the level of opacity. If you need the alpha channel in an image to -be the level of transparency instead of opacity, you can invert the -alpha channel (or the tRNS chunk data) after it's read, so that 0 is -fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit -images) is fully transparent, with - - png_set_invert_alpha(png_ptr); - -The PNG format only supports pixels with postmultiplied alpha. -If you want to replace the pixels, after reading them, with pixels -that have premultiplied color samples, you can do this with - - png_set_premultiply_alpha(png_ptr); - -If you do this, any input with a tRNS chunk will be expanded to -have an alpha channel. - -PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as -they can, resulting in, for example, 8 pixels per byte for 1 bit -files. This code expands to 1 pixel per byte without changing the -values of the pixels: - - if (bit_depth < 8) - png_set_packing(png_ptr); - -PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels -stored in a PNG image have been "scaled" or "shifted" up to the next -higher possible bit depth (e.g. from 5 bits/sample in the range [0,31] -to 8 bits/sample in the range [0, 255]). However, it is also possible -to convert the PNG pixel data back to the original bit depth of the -image. This call reduces the pixels back down to the original bit depth: - - png_color_8p sig_bit; - - if (png_get_sBIT(png_ptr, info_ptr, &sig_bit)) - png_set_shift(png_ptr, sig_bit); - -PNG files store 3-color pixels in red, green, blue order. This code -changes the storage of the pixels to blue, green, red: - - if (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) - png_set_bgr(png_ptr); - -PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them -into 4 or 8 bytes for windowing systems that need them in this format: - - if (color_type == PNG_COLOR_TYPE_RGB) - png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE); - -where "filler" is the 8 or 16-bit number to fill with, and the location is -either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether -you want the filler before the RGB or after. This transformation -does not affect images that already have full alpha channels. To add an -opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which -will generate RGBA pixels. - -Note that png_set_filler() does not change the color type. If you want -to do that, you can add a true alpha channel with - - if (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_GRAY) - png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER); - -where "filler" contains the alpha value to assign to each pixel. -This function was added in libpng-1.2.7. - -If you are reading an image with an alpha channel, and you need the -data as ARGB instead of the normal PNG format RGBA: - - if (color_type == PNG_COLOR_TYPE_RGB_ALPHA) - png_set_swap_alpha(png_ptr); - -For some uses, you may want a grayscale image to be represented as -RGB. This code will do that conversion: - - if (color_type == PNG_COLOR_TYPE_GRAY || - color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - png_set_gray_to_rgb(png_ptr); - -Conversely, you can convert an RGB or RGBA image to grayscale or grayscale -with alpha. - - if (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) - png_set_rgb_to_gray_fixed(png_ptr, error_action, - int red_weight, int green_weight); - - error_action = 1: silently do the conversion - error_action = 2: issue a warning if the original - image has any pixel where - red != green or red != blue - error_action = 3: issue an error and abort the - conversion if the original - image has any pixel where - red != green or red != blue - - red_weight: weight of red component times 100000 - green_weight: weight of green component times 100000 - If either weight is negative, default - weights (21268, 71514) are used. - -If you have set error_action = 1 or 2, you can -later check whether the image really was gray, after processing -the image rows, with the png_get_rgb_to_gray_status(png_ptr) function. -It will return a png_byte that is zero if the image was gray or -1 if there were any non-gray pixels. bKGD and sBIT data -will be silently converted to grayscale, using the green channel -data, regardless of the error_action setting. - -With red_weight+green_weight<=100000, -the normalized graylevel is computed: - - int rw = red_weight * 65536; - int gw = green_weight * 65536; - int bw = 65536 - (rw + gw); - gray = (rw*red + gw*green + bw*blue)/65536; - -The default values approximate those recommended in the Charles -Poynton's Color FAQ, <http://www.inforamp.net/~poynton/> -Copyright (c) 1998-01-04 Charles Poynton <poynton at inforamp.net> - - Y = 0.212671 * R + 0.715160 * G + 0.072169 * B - -Libpng approximates this with - - Y = 0.21268 * R + 0.7151 * G + 0.07217 * B - -which can be expressed with integers as - - Y = (6969 * R + 23434 * G + 2365 * B)/32768 - -The calculation is done in a linear colorspace, if the image gamma -is known. - -If you have a grayscale and you are using png_set_expand_depth(), -png_set_expand(), or png_set_gray_to_rgb to change to truecolor or to -a higher bit-depth, you must either supply the background color as a gray -value at the original file bit-depth (need_expand = 1) or else supply the -background color as an RGB triplet at the final, expanded bit depth -(need_expand = 0). Similarly, if you are reading a paletted image, you -must either supply the background color as a palette index (need_expand = 1) -or as an RGB triplet that may or may not be in the palette (need_expand = 0). - - png_color_16 my_background; - png_color_16p image_background; - - if (png_get_bKGD(png_ptr, info_ptr, &image_background)) - png_set_background(png_ptr, image_background, - PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); - else - png_set_background(png_ptr, &my_background, - PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); - -The png_set_background() function tells libpng to composite images -with alpha or simple transparency against the supplied background -color. If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid), -you may use this color, or supply another color more suitable for -the current display (e.g., the background color from a web page). You -need to tell libpng whether the color is in the gamma space of the -display (PNG_BACKGROUND_GAMMA_SCREEN for colors you supply), the file -(PNG_BACKGROUND_GAMMA_FILE for colors from the bKGD chunk), or one -that is neither of these gammas (PNG_BACKGROUND_GAMMA_UNIQUE - I don't -know why anyone would use this, but it's here). - -To properly display PNG images on any kind of system, the application needs -to know what the display gamma is. Ideally, the user will know this, and -the application will allow them to set it. One method of allowing the user -to set the display gamma separately for each system is to check for a -SCREEN_GAMMA or DISPLAY_GAMMA environment variable, which will hopefully be -correctly set. - -Note that display_gamma is the overall gamma correction required to produce -pleasing results, which depends on the lighting conditions in the surrounding -environment. In a dim or brightly lit room, no compensation other than -the physical gamma exponent of the monitor is needed, while in a dark room -a slightly smaller exponent is better. - - double gamma, screen_gamma; - - if (/* We have a user-defined screen - gamma value */) - { - screen_gamma = user_defined_screen_gamma; - } - /* One way that applications can share the same - screen gamma value */ - else if ((gamma_str = getenv("SCREEN_GAMMA")) - != NULL) - { - screen_gamma = (double)atof(gamma_str); - } - /* If we don't have another value */ - else - { - screen_gamma = 2.2; /* A good guess for a - PC monitor in a bright office or a dim room */ - screen_gamma = 2.0; /* A good guess for a - PC monitor in a dark room */ - screen_gamma = 1.7 or 1.0; /* A good - guess for Mac systems */ - } - -The png_set_gamma() function handles gamma transformations of the data. -Pass both the file gamma and the current screen_gamma. If the file does -not have a gamma value, you can pass one anyway if you have an idea what -it is (usually 0.45455 is a good guess for GIF images on PCs). Note -that file gammas are inverted from screen gammas. See the discussions -on gamma in the PNG specification for an excellent description of what -gamma is, and why all applications should support it. It is strongly -recommended that PNG viewers support gamma correction. - - if (png_get_gAMA(png_ptr, info_ptr, &gamma)) - png_set_gamma(png_ptr, screen_gamma, gamma); - else - png_set_gamma(png_ptr, screen_gamma, 0.45455); - -If you need to reduce an RGB file to a paletted file, or if a paletted -file has more entries then will fit on your screen, png_set_dither() -will do that. Note that this is a simple match dither that merely -finds the closest color available. This should work fairly well with -optimized palettes, and fairly badly with linear color cubes. If you -pass a palette that is larger then maximum_colors, the file will -reduce the number of colors in the palette so it will fit into -maximum_colors. If there is a histogram, it will use it to make -more intelligent choices when reducing the palette. If there is no -histogram, it may not do as good a job. - - if (color_type & PNG_COLOR_MASK_COLOR) - { - if (png_get_valid(png_ptr, info_ptr, - PNG_INFO_PLTE)) - { - png_uint_16p histogram = NULL; - - png_get_hIST(png_ptr, info_ptr, - &histogram); - png_set_dither(png_ptr, palette, num_palette, - max_screen_colors, histogram, 1); - } - else - { - png_color std_color_cube[MAX_SCREEN_COLORS] = - { ... colors ... }; - - png_set_dither(png_ptr, std_color_cube, - MAX_SCREEN_COLORS, MAX_SCREEN_COLORS, - NULL,0); - } - } - -PNG files describe monochrome as black being zero and white being one. -The following code will reverse this (make black be one and white be -zero): - - if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY) - png_set_invert_mono(png_ptr); - -This function can also be used to invert grayscale and gray-alpha images: - - if (color_type == PNG_COLOR_TYPE_GRAY || - color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - png_set_invert_mono(png_ptr); - -PNG files store 16 bit pixels in network byte order (big-endian, -ie. most significant bits first). This code changes the storage to the -other way (little-endian, i.e. least significant bits first, the -way PCs store them): - - if (bit_depth == 16) - png_set_swap(png_ptr); - -If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you -need to change the order the pixels are packed into bytes, you can use: - - if (bit_depth < 8) - png_set_packswap(png_ptr); - -Finally, you can write your own transformation function if none of -the existing ones meets your needs. This is done by setting a callback -with - - png_set_read_user_transform_fn(png_ptr, - read_transform_fn); - -You must supply the function - - void read_transform_fn(png_ptr ptr, row_info_ptr - row_info, png_bytep data) - -See pngtest.c for a working example. Your function will be called -after all of the other transformations have been processed. - -You can also set up a pointer to a user structure for use by your -callback function, and you can inform libpng that your transform -function will change the number of channels or bit depth with the -function - - png_set_user_transform_info(png_ptr, user_ptr, - user_depth, user_channels); - -The user's application, not libpng, is responsible for allocating and -freeing any memory required for the user structure. - -You can retrieve the pointer via the function -png_get_user_transform_ptr(). For example: - - voidp read_user_transform_ptr = - png_get_user_transform_ptr(png_ptr); - -The last thing to handle is interlacing; this is covered in detail below, -but you must call the function here if you want libpng to handle expansion -of the interlaced image. - - number_of_passes = png_set_interlace_handling(png_ptr); - -After setting the transformations, libpng can update your png_info -structure to reflect any transformations you've requested with this -call. This is most useful to update the info structure's rowbytes -field so you can use it to allocate your image memory. This function -will also update your palette with the correct screen_gamma and -background if these have been given with the calls above. - - png_read_update_info(png_ptr, info_ptr); - -After you call png_read_update_info(), you can allocate any -memory you need to hold the image. The row data is simply -raw byte data for all forms of images. As the actual allocation -varies among applications, no example will be given. If you -are allocating one large chunk, you will need to build an -array of pointers to each row, as it will be needed for some -of the functions below. - -.SS Reading image data - -After you've allocated memory, you can read the image data. -The simplest way to do this is in one function call. If you are -allocating enough memory to hold the whole image, you can just -call png_read_image() and libpng will read in all the image data -and put it in the memory area supplied. You will need to pass in -an array of pointers to each row. - -This function automatically handles interlacing, so you don't need -to call png_set_interlace_handling() or call this function multiple -times, or any of that other stuff necessary with png_read_rows(). - - png_read_image(png_ptr, row_pointers); - -where row_pointers is: - - png_bytep row_pointers[height]; - -You can point to void or char or whatever you use for pixels. - -If you don't want to read in the whole image at once, you can -use png_read_rows() instead. If there is no interlacing (check -interlace_type == PNG_INTERLACE_NONE), this is simple: - - png_read_rows(png_ptr, row_pointers, NULL, - number_of_rows); - -where row_pointers is the same as in the png_read_image() call. - -If you are doing this just one row at a time, you can do this with -a single row_pointer instead of an array of row_pointers: - - png_bytep row_pointer = row; - png_read_row(png_ptr, row_pointer, NULL); - -If the file is interlaced (interlace_type != 0 in the IHDR chunk), things -get somewhat harder. The only current (PNG Specification version 1.2) -interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7) -is a somewhat complicated 2D interlace scheme, known as Adam7, that -breaks down an image into seven smaller images of varying size, based -on an 8x8 grid. - -libpng can fill out those images or it can give them to you "as is". -If you want them filled out, there are two ways to do that. The one -mentioned in the PNG specification is to expand each pixel to cover -those pixels that have not been read yet (the "rectangle" method). -This results in a blocky image for the first pass, which gradually -smooths out as more pixels are read. The other method is the "sparkle" -method, where pixels are drawn only in their final locations, with the -rest of the image remaining whatever colors they were initialized to -before the start of the read. The first method usually looks better, -but tends to be slower, as there are more pixels to put in the rows. - -If you don't want libpng to handle the interlacing details, just call -png_read_rows() seven times to read in all seven images. Each of the -images is a valid image by itself, or they can all be combined on an -8x8 grid to form a single image (although if you intend to combine them -you would be far better off using the libpng interlace handling). - -The first pass will return an image 1/8 as wide as the entire image -(every 8th column starting in column 0) and 1/8 as high as the original -(every 8th row starting in row 0), the second will be 1/8 as wide -(starting in column 4) and 1/8 as high (also starting in row 0). The -third pass will be 1/4 as wide (every 4th pixel starting in column 0) and -1/8 as high (every 8th row starting in row 4), and the fourth pass will -be 1/4 as wide and 1/4 as high (every 4th column starting in column 2, -and every 4th row starting in row 0). The fifth pass will return an -image 1/2 as wide, and 1/4 as high (starting at column 0 and row 2), -while the sixth pass will be 1/2 as wide and 1/2 as high as the original -(starting in column 1 and row 0). The seventh and final pass will be as -wide as the original, and 1/2 as high, containing all of the odd -numbered scanlines. Phew! - -If you want libpng to expand the images, call this before calling -png_start_read_image() or png_read_update_info(): - - if (interlace_type == PNG_INTERLACE_ADAM7) - number_of_passes - = png_set_interlace_handling(png_ptr); - -This will return the number of passes needed. Currently, this -is seven, but may change if another interlace type is added. -This function can be called even if the file is not interlaced, -where it will return one pass. - -If you are not going to display the image after each pass, but are -going to wait until the entire image is read in, use the sparkle -effect. This effect is faster and the end result of either method -is exactly the same. If you are planning on displaying the image -after each pass, the "rectangle" effect is generally considered the -better looking one. - -If you only want the "sparkle" effect, just call png_read_rows() as -normal, with the third parameter NULL. Make sure you make pass over -the image number_of_passes times, and you don't change the data in the -rows between calls. You can change the locations of the data, just -not the data. Each pass only writes the pixels appropriate for that -pass, and assumes the data from previous passes is still valid. - - png_read_rows(png_ptr, row_pointers, NULL, - number_of_rows); - -If you only want the first effect (the rectangles), do the same as -before except pass the row buffer in the third parameter, and leave -the second parameter NULL. - - png_read_rows(png_ptr, NULL, row_pointers, - number_of_rows); - -.SS Finishing a sequential read - -After you are finished reading the image through the -low-level interface, you can finish reading the file. If you are -interested in comments or time, which may be stored either before or -after the image data, you should pass the separate png_info struct if -you want to keep the comments from before and after the image -separate. If you are not interested, you can pass NULL. - - png_read_end(png_ptr, end_info); - -When you are done, you can free all memory allocated by libpng like this: - - png_destroy_read_struct(&png_ptr, &info_ptr, - &end_info); - -It is also possible to individually free the info_ptr members that -point to libpng-allocated storage with the following function: - - png_free_data(png_ptr, info_ptr, mask, seq) - mask - identifies data to be freed, a mask - containing the bitwise OR of one or - more of - PNG_FREE_PLTE, PNG_FREE_TRNS, - PNG_FREE_HIST, PNG_FREE_ICCP, - PNG_FREE_PCAL, PNG_FREE_ROWS, - PNG_FREE_SCAL, PNG_FREE_SPLT, - PNG_FREE_TEXT, PNG_FREE_UNKN, - or simply PNG_FREE_ALL - seq - sequence number of item to be freed - (-1 for all items) - -This function may be safely called when the relevant storage has -already been freed, or has not yet been allocated, or was allocated -by the user and not by libpng, and will in those cases do nothing. -The "seq" parameter is ignored if only one item of the selected data -type, such as PLTE, is allowed. If "seq" is not -1, and multiple items -are allowed for the data type identified in the mask, such as text or -sPLT, only the n'th item in the structure is freed, where n is "seq". - -The default behavior is only to free data that was allocated internally -by libpng. This can be changed, so that libpng will not free the data, -or so that it will free data that was allocated by the user with png_malloc() -or png_zalloc() and passed in via a png_set_*() function, with - - png_data_freer(png_ptr, info_ptr, freer, mask) - mask - which data elements are affected - same choices as in png_free_data() - freer - one of - PNG_DESTROY_WILL_FREE_DATA - PNG_SET_WILL_FREE_DATA - PNG_USER_WILL_FREE_DATA - -This function only affects data that has already been allocated. -You can call this function after reading the PNG data but before calling -any png_set_*() functions, to control whether the user or the png_set_*() -function is responsible for freeing any existing data that might be present, -and again after the png_set_*() functions to control whether the user -or png_destroy_*() is supposed to free the data. When the user assumes -responsibility for libpng-allocated data, the application must use -png_free() to free it, and when the user transfers responsibility to libpng -for data that the user has allocated, the user must have used png_malloc() -or png_zalloc() to allocate it. - -If you allocated your row_pointers in a single block, as suggested above in -the description of the high level read interface, you must not transfer -responsibility for freeing it to the png_set_rows or png_read_destroy function, -because they would also try to free the individual row_pointers[i]. - -If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword -separately, do not transfer responsibility for freeing text_ptr to libpng, -because when libpng fills a png_text structure it combines these members with -the key member, and png_free_data() will free only text_ptr.key. Similarly, -if you transfer responsibility for free'ing text_ptr from libpng to your -application, your application must not separately free those members. - -The png_free_data() function will turn off the "valid" flag for anything -it frees. If you need to turn the flag off for a chunk that was freed by -your application instead of by libpng, you can use - - png_set_invalid(png_ptr, info_ptr, mask); - mask - identifies the chunks to be made invalid, - containing the bitwise OR of one or - more of - PNG_INFO_gAMA, PNG_INFO_sBIT, - PNG_INFO_cHRM, PNG_INFO_PLTE, - PNG_INFO_tRNS, PNG_INFO_bKGD, - PNG_INFO_hIST, PNG_INFO_pHYs, - PNG_INFO_oFFs, PNG_INFO_tIME, - PNG_INFO_pCAL, PNG_INFO_sRGB, - PNG_INFO_iCCP, PNG_INFO_sPLT, - PNG_INFO_sCAL, PNG_INFO_IDAT - -For a more compact example of reading a PNG image, see the file example.c. - -.SS Reading PNG files progressively - -The progressive reader is slightly different then the non-progressive -reader. Instead of calling png_read_info(), png_read_rows(), and -png_read_end(), you make one call to png_process_data(), which calls -callbacks when it has the info, a row, or the end of the image. You -set up these callbacks with png_set_progressive_read_fn(). You don't -have to worry about the input/output functions of libpng, as you are -giving the library the data directly in png_process_data(). I will -assume that you have read the section on reading PNG files above, -so I will only highlight the differences (although I will show -all of the code). - -png_structp png_ptr; -png_infop info_ptr; - - /* An example code fragment of how you would - initialize the progressive reader in your - application. */ - int - initialize_png_reader() - { - png_ptr = png_create_read_struct - (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr, - user_error_fn, user_warning_fn); - if (!png_ptr) - return (ERROR); - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) - { - png_destroy_read_struct(&png_ptr, (png_infopp)NULL, - (png_infopp)NULL); - return (ERROR); - } - - if (setjmp(png_jmpbuf(png_ptr))) - { - png_destroy_read_struct(&png_ptr, &info_ptr, - (png_infopp)NULL); - return (ERROR); - } - - /* This one's new. You can provide functions - to be called when the header info is valid, - when each row is completed, and when the image - is finished. If you aren't using all functions, - you can specify NULL parameters. Even when all - three functions are NULL, you need to call - png_set_progressive_read_fn(). You can use - any struct as the user_ptr (cast to a void pointer - for the function call), and retrieve the pointer - from inside the callbacks using the function - - png_get_progressive_ptr(png_ptr); - - which will return a void pointer, which you have - to cast appropriately. - */ - png_set_progressive_read_fn(png_ptr, (void *)user_ptr, - info_callback, row_callback, end_callback); - - return 0; - } - - /* A code fragment that you call as you receive blocks - of data */ - int - process_data(png_bytep buffer, png_uint_32 length) - { - if (setjmp(png_jmpbuf(png_ptr))) - { - png_destroy_read_struct(&png_ptr, &info_ptr, - (png_infopp)NULL); - return (ERROR); - } - - /* This one's new also. Simply give it a chunk - of data from the file stream (in order, of - course). On machines with segmented memory - models machines, don't give it any more than - 64K. The library seems to run fine with sizes - of 4K. Although you can give it much less if - necessary (I assume you can give it chunks of - 1 byte, I haven't tried less then 256 bytes - yet). When this function returns, you may - want to display any rows that were generated - in the row callback if you don't already do - so there. - */ - png_process_data(png_ptr, info_ptr, buffer, length); - return 0; - } - - /* This function is called (as set by - png_set_progressive_read_fn() above) when enough data - has been supplied so all of the header has been - read. - */ - void - info_callback(png_structp png_ptr, png_infop info) - { - /* Do any setup here, including setting any of - the transformations mentioned in the Reading - PNG files section. For now, you _must_ call - either png_start_read_image() or - png_read_update_info() after all the - transformations are set (even if you don't set - any). You may start getting rows before - png_process_data() returns, so this is your - last chance to prepare for that. - */ - } - - /* This function is called when each row of image - data is complete */ - void - row_callback(png_structp png_ptr, png_bytep new_row, - png_uint_32 row_num, int pass) - { - /* If the image is interlaced, and you turned - on the interlace handler, this function will - be called for every row in every pass. Some - of these rows will not be changed from the - previous pass. When the row is not changed, - the new_row variable will be NULL. The rows - and passes are called in order, so you don't - really need the row_num and pass, but I'm - supplying them because it may make your life - easier. - - For the non-NULL rows of interlaced images, - you must call png_progressive_combine_row() - passing in the row and the old row. You can - call this function for NULL rows (it will just - return) and for non-interlaced images (it just - does the memcpy for you) if it will make the - code easier. Thus, you can just do this for - all cases: - */ - - png_progressive_combine_row(png_ptr, old_row, - new_row); - - /* where old_row is what was displayed for - previously for the row. Note that the first - pass (pass == 0, really) will completely cover - the old row, so the rows do not have to be - initialized. After the first pass (and only - for interlaced images), you will have to pass - the current row, and the function will combine - the old row and the new row. - */ - } - - void - end_callback(png_structp png_ptr, png_infop info) - { - /* This function is called after the whole image - has been read, including any chunks after the - image (up to and including the IEND). You - will usually have the same info chunk as you - had in the header, although some data may have - been added to the comments and time fields. - - Most people won't do much here, perhaps setting - a flag that marks the image as finished. - */ - } - - - -.SH IV. Writing - -Much of this is very similar to reading. However, everything of -importance is repeated here, so you won't have to constantly look -back up in the reading section to understand writing. - -.SS Setup - -You will want to do the I/O initialization before you get into libpng, -so if it doesn't work, you don't have anything to undo. If you are not -using the standard I/O functions, you will need to replace them with -custom writing functions. See the discussion under Customizing libpng. - - FILE *fp = fopen(file_name, "wb"); - if (!fp) - { - return (ERROR); - } - -Next, png_struct and png_info need to be allocated and initialized. -As these can be both relatively large, you may not want to store these -on the stack, unless you have stack space to spare. Of course, you -will want to check if they return NULL. If you are also reading, -you won't want to name your read structure and your write structure -both "png_ptr"; you can call them anything you like, such as -"read_ptr" and "write_ptr". Look at pngtest.c, for example. - - png_structp png_ptr = png_create_write_struct - (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr, - user_error_fn, user_warning_fn); - if (!png_ptr) - return (ERROR); - - png_infop info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) - { - png_destroy_write_struct(&png_ptr, - (png_infopp)NULL); - return (ERROR); - } - -If you want to use your own memory allocation routines, -define PNG_USER_MEM_SUPPORTED and use -png_create_write_struct_2() instead of png_create_write_struct(): - - png_structp png_ptr = png_create_write_struct_2 - (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr, - user_error_fn, user_warning_fn, (png_voidp) - user_mem_ptr, user_malloc_fn, user_free_fn); - -After you have these structures, you will need to set up the -error handling. When libpng encounters an error, it expects to -longjmp() back to your routine. Therefore, you will need to call -setjmp() and pass the png_jmpbuf(png_ptr). If you -write the file from different routines, you will need to update -the png_jmpbuf(png_ptr) every time you enter a new routine that will -call a png_*() function. See your documentation of setjmp/longjmp -for your compiler for more information on setjmp/longjmp. See -the discussion on libpng error handling in the Customizing Libpng -section below for more information on the libpng error handling. - - if (setjmp(png_jmpbuf(png_ptr))) - { - png_destroy_write_struct(&png_ptr, &info_ptr); - fclose(fp); - return (ERROR); - } - ... - return; - -If you would rather avoid the complexity of setjmp/longjmp issues, -you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case -errors will result in a call to PNG_ABORT() which defaults to abort(). - -Now you need to set up the output code. The default for libpng is to -use the C function fwrite(). If you use this, you will need to pass a -valid FILE * in the function png_init_io(). Be sure that the file is -opened in binary mode. Again, if you wish to handle writing data in -another way, see the discussion on libpng I/O handling in the Customizing -Libpng section below. - - png_init_io(png_ptr, fp); - -If you are embedding your PNG into a datastream such as MNG, and don't -want libpng to write the 8-byte signature, or if you have already -written the signature in your application, use - - png_set_sig_bytes(png_ptr, 8); - -to inform libpng that it should not write a signature. - -.SS Write callbacks - -At this point, you can set up a callback function that will be -called after each row has been written, which you can use to control -a progress meter or the like. It's demonstrated in pngtest.c. -You must supply a function - - void write_row_callback(png_ptr, png_uint_32 row, - int pass); - { - /* put your code here */ - } - -(You can give it another name that you like instead of "write_row_callback") - -To inform libpng about your function, use - - png_set_write_status_fn(png_ptr, write_row_callback); - -You now have the option of modifying how the compression library will -run. The following functions are mainly for testing, but may be useful -in some cases, like if you need to write PNG files extremely fast and -are willing to give up some compression, or if you want to get the -maximum possible compression at the expense of slower writing. If you -have no special needs in this area, let the library do what it wants by -not calling this function at all, as it has been tuned to deliver a good -speed/compression ratio. The second parameter to png_set_filter() is -the filter method, for which the only valid values are 0 (as of the -July 1999 PNG specification, version 1.2) or 64 (if you are writing -a PNG datastream that is to be embedded in a MNG datastream). The third -parameter is a flag that indicates which filter type(s) are to be tested -for each scanline. See the PNG specification for details on the specific -filter types. - - - /* turn on or off filtering, and/or choose - specific filters. You can use either a single - PNG_FILTER_VALUE_NAME or the bitwise OR of one - or more PNG_FILTER_NAME masks. */ - png_set_filter(png_ptr, 0, - PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE | - PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB | - PNG_FILTER_UP | PNG_FILTER_VALUE_UP | - PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG | - PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH| - PNG_ALL_FILTERS); - -If an application -wants to start and stop using particular filters during compression, -it should start out with all of the filters (to ensure that the previous -row of pixels will be stored in case it's needed later), and then add -and remove them after the start of compression. - -If you are writing a PNG datastream that is to be embedded in a MNG -datastream, the second parameter can be either 0 or 64. - -The png_set_compression_*() functions interface to the zlib compression -library, and should mostly be ignored unless you really know what you are -doing. The only generally useful call is png_set_compression_level() -which changes how much time zlib spends on trying to compress the image -data. See the Compression Library (zlib.h and algorithm.txt, distributed -with zlib) for details on the compression levels. - - /* set the zlib compression level */ - png_set_compression_level(png_ptr, - Z_BEST_COMPRESSION); - - /* set other zlib parameters */ - png_set_compression_mem_level(png_ptr, 8); - png_set_compression_strategy(png_ptr, - Z_DEFAULT_STRATEGY); - png_set_compression_window_bits(png_ptr, 15); - png_set_compression_method(png_ptr, 8); - png_set_compression_buffer_size(png_ptr, 8192) - -extern PNG_EXPORT(void,png_set_zbuf_size) - -.SS Setting the contents of info for output - -You now need to fill in the png_info structure with all the data you -wish to write before the actual image. Note that the only thing you -are allowed to write after the image is the text chunks and the time -chunk (as of PNG Specification 1.2, anyway). See png_write_end() and -the latest PNG specification for more information on that. If you -wish to write them before the image, fill them in now, and flag that -data as being valid. If you want to wait until after the data, don't -fill them until png_write_end(). For all the fields in png_info and -their data types, see png.h. For explanations of what the fields -contain, see the PNG specification. - -Some of the more important parts of the png_info are: - - png_set_IHDR(png_ptr, info_ptr, width, height, - bit_depth, color_type, interlace_type, - compression_type, filter_method) - width - holds the width of the image - in pixels (up to 2^31). - height - holds the height of the image - in pixels (up to 2^31). - bit_depth - holds the bit depth of one of the - image channels. - (valid values are 1, 2, 4, 8, 16 - and depend also on the - color_type. See also significant - bits (sBIT) below). - color_type - describes which color/alpha - channels are present. - PNG_COLOR_TYPE_GRAY - (bit depths 1, 2, 4, 8, 16) - PNG_COLOR_TYPE_GRAY_ALPHA - (bit depths 8, 16) - PNG_COLOR_TYPE_PALETTE - (bit depths 1, 2, 4, 8) - PNG_COLOR_TYPE_RGB - (bit_depths 8, 16) - PNG_COLOR_TYPE_RGB_ALPHA - (bit_depths 8, 16) - - PNG_COLOR_MASK_PALETTE - PNG_COLOR_MASK_COLOR - PNG_COLOR_MASK_ALPHA - - interlace_type - PNG_INTERLACE_NONE or - PNG_INTERLACE_ADAM7 - compression_type - (must be - PNG_COMPRESSION_TYPE_DEFAULT) - filter_method - (must be PNG_FILTER_TYPE_DEFAULT - or, if you are writing a PNG to - be embedded in a MNG datastream, - can also be - PNG_INTRAPIXEL_DIFFERENCING) - -If you call png_set_IHDR(), the call must appear before any of the -other png_set_*() functions, because they might require access to some of -the IHDR settings. The remaining png_set_*() functions can be called -in any order. - -If you wish, you can reset the compression_type, interlace_type, or -filter_method later by calling png_set_IHDR() again; if you do this, the -width, height, bit_depth, and color_type must be the same in each call. - - png_set_PLTE(png_ptr, info_ptr, palette, - num_palette); - palette - the palette for the file - (array of png_color) - num_palette - number of entries in the palette - - png_set_gAMA(png_ptr, info_ptr, gamma); - gamma - the gamma the image was created - at (PNG_INFO_gAMA) - - png_set_sRGB(png_ptr, info_ptr, srgb_intent); - srgb_intent - the rendering intent - (PNG_INFO_sRGB) The presence of - the sRGB chunk means that the pixel - data is in the sRGB color space. - This chunk also implies specific - values of gAMA and cHRM. Rendering - intent is the CSS-1 property that - has been defined by the International - Color Consortium - (http://www.color.org). - It can be one of - PNG_sRGB_INTENT_SATURATION, - PNG_sRGB_INTENT_PERCEPTUAL, - PNG_sRGB_INTENT_ABSOLUTE, or - PNG_sRGB_INTENT_RELATIVE. - - - png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr, - srgb_intent); - srgb_intent - the rendering intent - (PNG_INFO_sRGB) The presence of the - sRGB chunk means that the pixel - data is in the sRGB color space. - This function also causes gAMA and - cHRM chunks with the specific values - that are consistent with sRGB to be - written. - - png_set_iCCP(png_ptr, info_ptr, name, compression_type, - profile, proflen); - name - The profile name. - compression - The compression type; always - PNG_COMPRESSION_TYPE_BASE for PNG 1.0. - You may give NULL to this argument to - ignore it. - profile - International Color Consortium color - profile data. May contain NULs. - proflen - length of profile data in bytes. - - png_set_sBIT(png_ptr, info_ptr, sig_bit); - sig_bit - the number of significant bits for - (PNG_INFO_sBIT) each of the gray, red, - green, and blue channels, whichever are - appropriate for the given color type - (png_color_16) - - png_set_tRNS(png_ptr, info_ptr, trans, num_trans, - trans_values); - trans - array of transparent - entries for palette (PNG_INFO_tRNS) - trans_values - graylevel or color sample values - (in order red, green, blue) of the - single transparent color for - non-paletted images (PNG_INFO_tRNS) - num_trans - number of transparent entries - (PNG_INFO_tRNS) - - png_set_hIST(png_ptr, info_ptr, hist); - (PNG_INFO_hIST) - hist - histogram of palette (array of - png_uint_16) - - png_set_tIME(png_ptr, info_ptr, mod_time); - mod_time - time image was last modified - (PNG_VALID_tIME) - - png_set_bKGD(png_ptr, info_ptr, background); - background - background color (PNG_VALID_bKGD) - - png_set_text(png_ptr, info_ptr, text_ptr, num_text); - text_ptr - array of png_text holding image - comments - text_ptr[i].compression - type of compression used - on "text" PNG_TEXT_COMPRESSION_NONE - PNG_TEXT_COMPRESSION_zTXt - PNG_ITXT_COMPRESSION_NONE - PNG_ITXT_COMPRESSION_zTXt - text_ptr[i].key - keyword for comment. Must contain - 1-79 characters. - text_ptr[i].text - text comments for current - keyword. Can be NULL or empty. - text_ptr[i].text_length - length of text string, - after decompression, 0 for iTXt - text_ptr[i].itxt_length - length of itxt string, - after decompression, 0 for tEXt/zTXt - text_ptr[i].lang - language of comment (NULL or - empty for unknown). - text_ptr[i].translated_keyword - keyword in UTF-8 (NULL - or empty for unknown). - Note that the itxt_length, lang, and lang_key - members of the text_ptr structure only exist - when the library is built with iTXt chunk support. - - num_text - number of comments - - png_set_sPLT(png_ptr, info_ptr, &palette_ptr, - num_spalettes); - palette_ptr - array of png_sPLT_struct structures - to be added to the list of palettes - in the info structure. - num_spalettes - number of palette structures to be - added. - - png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, - unit_type); - offset_x - positive offset from the left - edge of the screen - offset_y - positive offset from the top - edge of the screen - unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER - - png_set_pHYs(png_ptr, info_ptr, res_x, res_y, - unit_type); - res_x - pixels/unit physical resolution - in x direction - res_y - pixels/unit physical resolution - in y direction - unit_type - PNG_RESOLUTION_UNKNOWN, - PNG_RESOLUTION_METER - - png_set_sCAL(png_ptr, info_ptr, unit, width, height) - unit - physical scale units (an integer) - width - width of a pixel in physical scale units - height - height of a pixel in physical scale units - (width and height are doubles) - - png_set_sCAL_s(png_ptr, info_ptr, unit, width, height) - unit - physical scale units (an integer) - width - width of a pixel in physical scale units - height - height of a pixel in physical scale units - (width and height are strings like "2.54") - - png_set_unknown_chunks(png_ptr, info_ptr, &unknowns, - num_unknowns) - unknowns - array of png_unknown_chunk - structures holding unknown chunks - unknowns[i].name - name of unknown chunk - unknowns[i].data - data of unknown chunk - unknowns[i].size - size of unknown chunk's data - unknowns[i].location - position to write chunk in file - 0: do not write chunk - PNG_HAVE_IHDR: before PLTE - PNG_HAVE_PLTE: before IDAT - PNG_AFTER_IDAT: after IDAT - -The "location" member is set automatically according to -what part of the output file has already been written. -You can change its value after calling png_set_unknown_chunks() -as demonstrated in pngtest.c. Within each of the "locations", -the chunks are sequenced according to their position in the -structure (that is, the value of "i", which is the order in which -the chunk was either read from the input file or defined with -png_set_unknown_chunks). - -A quick word about text and num_text. text is an array of png_text -structures. num_text is the number of valid structures in the array. -Each png_text structure holds a language code, a keyword, a text value, -and a compression type. - -The compression types have the same valid numbers as the compression -types of the image data. Currently, the only valid number is zero. -However, you can store text either compressed or uncompressed, unlike -images, which always have to be compressed. So if you don't want the -text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE. -Because tEXt and zTXt chunks don't have a language field, if you -specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt -any language code or translated keyword will not be written out. - -Until text gets around 1000 bytes, it is not worth compressing it. -After the text has been written out to the file, the compression type -is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR, -so that it isn't written out again at the end (in case you are calling -png_write_end() with the same struct. - -The keywords that are given in the PNG Specification are: - - Title Short (one line) title or - caption for image - Author Name of image's creator - Description Description of image (possibly long) - Copyright Copyright notice - Creation Time Time of original image creation - (usually RFC 1123 format, see below) - Software Software used to create the image - Disclaimer Legal disclaimer - Warning Warning of nature of content - Source Device used to create the image - Comment Miscellaneous comment; conversion - from other image format - -The keyword-text pairs work like this. Keywords should be short -simple descriptions of what the comment is about. Some typical -keywords are found in the PNG specification, as is some recommendations -on keywords. You can repeat keywords in a file. You can even write -some text before the image and some after. For example, you may want -to put a description of the image before the image, but leave the -disclaimer until after, so viewers working over modem connections -don't have to wait for the disclaimer to go over the modem before -they start seeing the image. Finally, keywords should be full -words, not abbreviations. Keywords and text are in the ISO 8859-1 -(Latin-1) character set (a superset of regular ASCII) and can not -contain NUL characters, and should not contain control or other -unprintable characters. To make the comments widely readable, stick -with basic ASCII, and avoid machine specific character set extensions -like the IBM-PC character set. The keyword must be present, but -you can leave off the text string on non-compressed pairs. -Compressed pairs must have a text string, as only the text string -is compressed anyway, so the compression would be meaningless. - -PNG supports modification time via the png_time structure. Two -conversion routines are provided, png_convert_from_time_t() for -time_t and png_convert_from_struct_tm() for struct tm. The -time_t routine uses gmtime(). You don't have to use either of -these, but if you wish to fill in the png_time structure directly, -you should provide the time in universal time (GMT) if possible -instead of your local time. Note that the year number is the full -year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and -that months start with 1. - -If you want to store the time of the original image creation, you should -use a plain tEXt chunk with the "Creation Time" keyword. This is -necessary because the "creation time" of a PNG image is somewhat vague, -depending on whether you mean the PNG file, the time the image was -created in a non-PNG format, a still photo from which the image was -scanned, or possibly the subject matter itself. In order to facilitate -machine-readable dates, it is recommended that the "Creation Time" -tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"), -although this isn't a requirement. Unlike the tIME chunk, the -"Creation Time" tEXt chunk is not expected to be automatically changed -by the software. To facilitate the use of RFC 1123 dates, a function -png_convert_to_rfc1123(png_timep) is provided to convert from PNG -time to an RFC 1123 format string. - -.SS Writing unknown chunks - -You can use the png_set_unknown_chunks function to queue up chunks -for writing. You give it a chunk name, raw data, and a size; that's -all there is to it. The chunks will be written by the next following -png_write_info_before_PLTE, png_write_info, or png_write_end function. -Any chunks previously read into the info structure's unknown-chunk -list will also be written out in a sequence that satisfies the PNG -specification's ordering rules. - -.SS The high-level write interface - -At this point there are two ways to proceed; through the high-level -write interface, or through a sequence of low-level write operations. -You can use the high-level interface if your image data is present -in the info structure. All defined output -transformations are permitted, enabled by the following masks. - - PNG_TRANSFORM_IDENTITY No transformation - PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples - PNG_TRANSFORM_PACKSWAP Change order of packed - pixels to LSB first - PNG_TRANSFORM_INVERT_MONO Invert monochrome images - PNG_TRANSFORM_SHIFT Normalize pixels to the - sBIT depth - PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA - to BGRA - PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA - to AG - PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity - to transparency - PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples - PNG_TRANSFORM_STRIP_FILLER Strip out filler - bytes (deprecated). - PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading - filler bytes - PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing - filler bytes - -If you have valid image data in the info structure (you can use -png_set_rows() to put image data in the info structure), simply do this: - - png_write_png(png_ptr, info_ptr, png_transforms, NULL) - -where png_transforms is an integer containing the bitwise OR of some set of -transformation flags. This call is equivalent to png_write_info(), -followed the set of transformations indicated by the transform mask, -then png_write_image(), and finally png_write_end(). - -(The final parameter of this call is not yet used. Someday it might point -to transformation parameters required by some future output transform.) - -You must use png_transforms and not call any png_set_transform() functions -when you use png_write_png(). - -.SS The low-level write interface - -If you are going the low-level route instead, you are now ready to -write all the file information up to the actual image data. You do -this with a call to png_write_info(). - - png_write_info(png_ptr, info_ptr); - -Note that there is one transformation you may need to do before -png_write_info(). In PNG files, the alpha channel in an image is the -level of opacity. If your data is supplied as a level of transparency, -you can invert the alpha channel before you write it, so that 0 is -fully transparent and 255 (in 8-bit or paletted images) or 65535 -(in 16-bit images) is fully opaque, with - - png_set_invert_alpha(png_ptr); - -This must appear before png_write_info() instead of later with the -other transformations because in the case of paletted images the tRNS -chunk data has to be inverted before the tRNS chunk is written. If -your image is not a paletted image, the tRNS data (which in such cases -represents a single color to be rendered as transparent) won't need to -be changed, and you can safely do this transformation after your -png_write_info() call. - -If you need to write a private chunk that you want to appear before -the PLTE chunk when PLTE is present, you can write the PNG info in -two steps, and insert code to write your own chunk between them: - - png_write_info_before_PLTE(png_ptr, info_ptr); - png_set_unknown_chunks(png_ptr, info_ptr, ...); - png_write_info(png_ptr, info_ptr); - -After you've written the file information, you can set up the library -to handle any special transformations of the image data. The various -ways to transform the data will be described in the order that they -should occur. This is important, as some of these change the color -type and/or bit depth of the data, and some others only work on -certain color types and bit depths. Even though each transformation -checks to see if it has data that it can do something with, you should -make sure to only enable a transformation if it will be valid for the -data. For example, don't swap red and blue on grayscale data. - -PNG files store RGB pixels packed into 3 or 6 bytes. This code tells -the library to strip input data that has 4 or 8 bytes per pixel down -to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2 -bytes per pixel). - - png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); - -where the 0 is unused, and the location is either PNG_FILLER_BEFORE or -PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel -is stored XRGB or RGBX. - -PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as -they can, resulting in, for example, 8 pixels per byte for 1 bit files. -If the data is supplied at 1 pixel per byte, use this code, which will -correctly pack the pixels into a single byte: - - png_set_packing(png_ptr); - -PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your -data is of another bit depth, you can write an sBIT chunk into the -file so that decoders can recover the original data if desired. - - /* Set the true bit depth of the image data */ - if (color_type & PNG_COLOR_MASK_COLOR) - { - sig_bit.red = true_bit_depth; - sig_bit.green = true_bit_depth; - sig_bit.blue = true_bit_depth; - } - else - { - sig_bit.gray = true_bit_depth; - } - if (color_type & PNG_COLOR_MASK_ALPHA) - { - sig_bit.alpha = true_bit_depth; - } - - png_set_sBIT(png_ptr, info_ptr, &sig_bit); - -If the data is stored in the row buffer in a bit depth other than -one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG), -this will scale the values to appear to be the correct bit depth as -is required by PNG. - - png_set_shift(png_ptr, &sig_bit); - -PNG files store 16 bit pixels in network byte order (big-endian, -ie. most significant bits first). This code would be used if they are -supplied the other way (little-endian, i.e. least significant bits -first, the way PCs store them): - - if (bit_depth > 8) - png_set_swap(png_ptr); - -If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you -need to change the order the pixels are packed into bytes, you can use: - - if (bit_depth < 8) - png_set_packswap(png_ptr); - -PNG files store 3 color pixels in red, green, blue order. This code -would be used if they are supplied as blue, green, red: - - png_set_bgr(png_ptr); - -PNG files describe monochrome as black being zero and white being -one. This code would be used if the pixels are supplied with this reversed -(black being one and white being zero): - - png_set_invert_mono(png_ptr); - -Finally, you can write your own transformation function if none of -the existing ones meets your needs. This is done by setting a callback -with - - png_set_write_user_transform_fn(png_ptr, - write_transform_fn); - -You must supply the function - - void write_transform_fn(png_ptr ptr, row_info_ptr - row_info, png_bytep data) - -See pngtest.c for a working example. Your function will be called -before any of the other transformations are processed. - -You can also set up a pointer to a user structure for use by your -callback function. - - png_set_user_transform_info(png_ptr, user_ptr, 0, 0); - -The user_channels and user_depth parameters of this function are ignored -when writing; you can set them to zero as shown. - -You can retrieve the pointer via the function png_get_user_transform_ptr(). -For example: - - voidp write_user_transform_ptr = - png_get_user_transform_ptr(png_ptr); - -It is possible to have libpng flush any pending output, either manually, -or automatically after a certain number of lines have been written. To -flush the output stream a single time call: - - png_write_flush(png_ptr); - -and to have libpng flush the output stream periodically after a certain -number of scanlines have been written, call: - - png_set_flush(png_ptr, nrows); - -Note that the distance between rows is from the last time png_write_flush() -was called, or the first row of the image if it has never been called. -So if you write 50 lines, and then png_set_flush 25, it will flush the -output on the next scanline, and every 25 lines thereafter, unless -png_write_flush() is called before 25 more lines have been written. -If nrows is too small (less than about 10 lines for a 640 pixel wide -RGB image) the image compression may decrease noticeably (although this -may be acceptable for real-time applications). Infrequent flushing will -only degrade the compression performance by a few percent over images -that do not use flushing. - -.SS Writing the image data - -That's it for the transformations. Now you can write the image data. -The simplest way to do this is in one function call. If you have the -whole image in memory, you can just call png_write_image() and libpng -will write the image. You will need to pass in an array of pointers to -each row. This function automatically handles interlacing, so you don't -need to call png_set_interlace_handling() or call this function multiple -times, or any of that other stuff necessary with png_write_rows(). - - png_write_image(png_ptr, row_pointers); - -where row_pointers is: - - png_byte *row_pointers[height]; - -You can point to void or char or whatever you use for pixels. - -If you don't want to write the whole image at once, you can -use png_write_rows() instead. If the file is not interlaced, -this is simple: - - png_write_rows(png_ptr, row_pointers, - number_of_rows); - -row_pointers is the same as in the png_write_image() call. - -If you are just writing one row at a time, you can do this with -a single row_pointer instead of an array of row_pointers: - - png_bytep row_pointer = row; - - png_write_row(png_ptr, row_pointer); - -When the file is interlaced, things can get a good deal more complicated. -The only currently (as of the PNG Specification version 1.2, dated July -1999) defined interlacing scheme for PNG files is the "Adam7" interlace -scheme, that breaks down an image into seven smaller images of varying -size. libpng will build these images for you, or you can do them -yourself. If you want to build them yourself, see the PNG specification -for details of which pixels to write when. - -If you don't want libpng to handle the interlacing details, just -use png_set_interlace_handling() and call png_write_rows() the -correct number of times to write all seven sub-images. - -If you want libpng to build the sub-images, call this before you start -writing any rows: - - number_of_passes = - png_set_interlace_handling(png_ptr); - -This will return the number of passes needed. Currently, this is seven, -but may change if another interlace type is added. - -Then write the complete image number_of_passes times. - - png_write_rows(png_ptr, row_pointers, - number_of_rows); - -As some of these rows are not used, and thus return immediately, you may -want to read about interlacing in the PNG specification, and only update -the rows that are actually used. - -.SS Finishing a sequential write - -After you are finished writing the image, you should finish writing -the file. If you are interested in writing comments or time, you should -pass an appropriately filled png_info pointer. If you are not interested, -you can pass NULL. - - png_write_end(png_ptr, info_ptr); - -When you are done, you can free all memory used by libpng like this: - - png_destroy_write_struct(&png_ptr, &info_ptr); - -It is also possible to individually free the info_ptr members that -point to libpng-allocated storage with the following function: - - png_free_data(png_ptr, info_ptr, mask, seq) - mask - identifies data to be freed, a mask - containing the bitwise OR of one or - more of - PNG_FREE_PLTE, PNG_FREE_TRNS, - PNG_FREE_HIST, PNG_FREE_ICCP, - PNG_FREE_PCAL, PNG_FREE_ROWS, - PNG_FREE_SCAL, PNG_FREE_SPLT, - PNG_FREE_TEXT, PNG_FREE_UNKN, - or simply PNG_FREE_ALL - seq - sequence number of item to be freed - (-1 for all items) - -This function may be safely called when the relevant storage has -already been freed, or has not yet been allocated, or was allocated -by the user and not by libpng, and will in those cases do nothing. -The "seq" parameter is ignored if only one item of the selected data -type, such as PLTE, is allowed. If "seq" is not -1, and multiple items -are allowed for the data type identified in the mask, such as text or -sPLT, only the n'th item in the structure is freed, where n is "seq". - -If you allocated data such as a palette that you passed in to libpng -with png_set_*, you must not free it until just before the call to -png_destroy_write_struct(). - -The default behavior is only to free data that was allocated internally -by libpng. This can be changed, so that libpng will not free the data, -or so that it will free data that was allocated by the user with png_malloc() -or png_zalloc() and passed in via a png_set_*() function, with - - png_data_freer(png_ptr, info_ptr, freer, mask) - mask - which data elements are affected - same choices as in png_free_data() - freer - one of - PNG_DESTROY_WILL_FREE_DATA - PNG_SET_WILL_FREE_DATA - PNG_USER_WILL_FREE_DATA - -For example, to transfer responsibility for some data from a read structure -to a write structure, you could use - - png_data_freer(read_ptr, read_info_ptr, - PNG_USER_WILL_FREE_DATA, - PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST) - png_data_freer(write_ptr, write_info_ptr, - PNG_DESTROY_WILL_FREE_DATA, - PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST) - -thereby briefly reassigning responsibility for freeing to the user but -immediately afterwards reassigning it once more to the write_destroy -function. Having done this, it would then be safe to destroy the read -structure and continue to use the PLTE, tRNS, and hIST data in the write -structure. - -This function only affects data that has already been allocated. -You can call this function before calling after the png_set_*() functions -to control whether the user or png_destroy_*() is supposed to free the data. -When the user assumes responsibility for libpng-allocated data, the -application must use -png_free() to free it, and when the user transfers responsibility to libpng -for data that the user has allocated, the user must have used png_malloc() -or png_zalloc() to allocate it. - -If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword -separately, do not transfer responsibility for freeing text_ptr to libpng, -because when libpng fills a png_text structure it combines these members with -the key member, and png_free_data() will free only text_ptr.key. Similarly, -if you transfer responsibility for free'ing text_ptr from libpng to your -application, your application must not separately free those members. -For a more compact example of writing a PNG image, see the file example.c. - -.SH V. Modifying/Customizing libpng: - -There are two issues here. The first is changing how libpng does -standard things like memory allocation, input/output, and error handling. -The second deals with more complicated things like adding new chunks, -adding new transformations, and generally changing how libpng works. -Both of those are compile-time issues; that is, they are generally -determined at the time the code is written, and there is rarely a need -to provide the user with a means of changing them. - -Memory allocation, input/output, and error handling - -All of the memory allocation, input/output, and error handling in libpng -goes through callbacks that are user-settable. The default routines are -in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change -these functions, call the appropriate png_set_*_fn() function. - -Memory allocation is done through the functions png_malloc(), png_calloc(), -and png_free(). These currently just call the standard C functions. -png_calloc() calls png_malloc() and then png_memset() to clear the newly -allocated memory to zero. If your pointers can't access more then 64K -at a time, you will want to set MAXSEG_64K in zlib.h. Since it is -unlikely that the method of handling memory allocation on a platform -will change between applications, these functions must be modified in -the library at compile time. If you prefer to use a different method -of allocating and freeing data, you can use png_create_read_struct_2() or -png_create_write_struct_2() to register your own functions as described -above. These functions also provide a void pointer that can be retrieved -via - - mem_ptr=png_get_mem_ptr(png_ptr); - -Your replacement memory functions must have prototypes as follows: - - png_voidp malloc_fn(png_structp png_ptr, - png_size_t size); - void free_fn(png_structp png_ptr, png_voidp ptr); - -Your malloc_fn() must return NULL in case of failure. The png_malloc() -function will normally call png_error() if it receives a NULL from the -system memory allocator or from your replacement malloc_fn(). - -Your free_fn() will never be called with a NULL ptr, since libpng's -png_free() checks for NULL before calling free_fn(). - -Input/Output in libpng is done through png_read() and png_write(), -which currently just call fread() and fwrite(). The FILE * is stored in -png_struct and is initialized via png_init_io(). If you wish to change -the method of I/O, the library supplies callbacks that you can set -through the function png_set_read_fn() and png_set_write_fn() at run -time, instead of calling the png_init_io() function. These functions -also provide a void pointer that can be retrieved via the function -png_get_io_ptr(). For example: - - png_set_read_fn(png_structp read_ptr, - voidp read_io_ptr, png_rw_ptr read_data_fn) - - png_set_write_fn(png_structp write_ptr, - voidp write_io_ptr, png_rw_ptr write_data_fn, - png_flush_ptr output_flush_fn); - - voidp read_io_ptr = png_get_io_ptr(read_ptr); - voidp write_io_ptr = png_get_io_ptr(write_ptr); - -The replacement I/O functions must have prototypes as follows: - - void user_read_data(png_structp png_ptr, - png_bytep data, png_size_t length); - void user_write_data(png_structp png_ptr, - png_bytep data, png_size_t length); - void user_flush_data(png_structp png_ptr); - -The user_read_data() function is responsible for detecting and -handling end-of-data errors. - -Supplying NULL for the read, write, or flush functions sets them back -to using the default C stream functions, which expect the io_ptr to -point to a standard *FILE structure. It is probably a mistake -to use NULL for one of write_data_fn and output_flush_fn but not both -of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined. -It is an error to read from a write stream, and vice versa. - -Error handling in libpng is done through png_error() and png_warning(). -Errors handled through png_error() are fatal, meaning that png_error() -should never return to its caller. Currently, this is handled via -setjmp() and longjmp() (unless you have compiled libpng with -PNG_SETJMP_NOT_SUPPORTED, in which case it is handled via PNG_ABORT()), -but you could change this to do things like exit() if you should wish. - -On non-fatal errors, png_warning() is called -to print a warning message, and then control returns to the calling code. -By default png_error() and png_warning() print a message on stderr via -fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined -(because you don't want the messages) or PNG_NO_STDIO defined (because -fprintf() isn't available). If you wish to change the behavior of the error -functions, you will need to set up your own message callbacks. These -functions are normally supplied at the time that the png_struct is created. -It is also possible to redirect errors and warnings to your own replacement -functions after png_create_*_struct() has been called by calling: - - png_set_error_fn(png_structp png_ptr, - png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warning_fn); - - png_voidp error_ptr = png_get_error_ptr(png_ptr); - -If NULL is supplied for either error_fn or warning_fn, then the libpng -default function will be used, calling fprintf() and/or longjmp() if a -problem is encountered. The replacement error functions should have -parameters as follows: - - void user_error_fn(png_structp png_ptr, - png_const_charp error_msg); - void user_warning_fn(png_structp png_ptr, - png_const_charp warning_msg); - -The motivation behind using setjmp() and longjmp() is the C++ throw and -catch exception handling methods. This makes the code much easier to write, -as there is no need to check every return code of every function call. -However, there are some uncertainties about the status of local variables -after a longjmp, so the user may want to be careful about doing anything -after setjmp returns non-zero besides returning itself. Consult your -compiler documentation for more details. For an alternative approach, you -may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net). - -.SS Custom chunks - -If you need to read or write custom chunks, you may need to get deeper -into the libpng code. The library now has mechanisms for storing -and writing chunks of unknown type; you can even declare callbacks -for custom chunks. However, this may not be good enough if the -library code itself needs to know about interactions between your -chunk and existing `intrinsic' chunks. - -If you need to write a new intrinsic chunk, first read the PNG -specification. Acquire a first level of understanding of how it works. -Pay particular attention to the sections that describe chunk names, -and look at how other chunks were designed, so you can do things -similarly. Second, check out the sections of libpng that read and -write chunks. Try to find a chunk that is similar to yours and use -it as a template. More details can be found in the comments inside -the code. It is best to handle unknown chunks in a generic method, -via callback functions, instead of by modifying libpng functions. - -If you wish to write your own transformation for the data, look through -the part of the code that does the transformations, and check out some of -the simpler ones to get an idea of how they work. Try to find a similar -transformation to the one you want to add and copy off of it. More details -can be found in the comments inside the code itself. - -.SS Configuring for 16 bit platforms - -You will want to look into zconf.h to tell zlib (and thus libpng) that -it cannot allocate more then 64K at a time. Even if you can, the memory -won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K. - -.SS Configuring for DOS - -For DOS users who only have access to the lower 640K, you will -have to limit zlib's memory usage via a png_set_compression_mem_level() -call. See zlib.h or zconf.h in the zlib library for more information. - -.SS Configuring for Medium Model - -Libpng's support for medium model has been tested on most of the popular -compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets -defined, and FAR gets defined to far in pngconf.h, and you should be -all set. Everything in the library (except for zlib's structure) is -expecting far data. You must use the typedefs with the p or pp on -the end for pointers (or at least look at them and be careful). Make -note that the rows of data are defined as png_bytepp, which is an -unsigned char far * far *. - -.SS Configuring for gui/windowing platforms: - -You will need to write new error and warning functions that use the GUI -interface, as described previously, and set them to be the error and -warning functions at the time that png_create_*_struct() is called, -in order to have them available during the structure initialization. -They can be changed later via png_set_error_fn(). On some compilers, -you may also have to change the memory allocators (png_malloc, etc.). - -.SS Configuring for compiler xxx: - -All includes for libpng are in pngconf.h. If you need to add, change -or delete an include, this is the place to do it. -The includes that are not needed outside libpng are protected by the -PNG_INTERNAL definition, which is only defined for those routines inside -libpng itself. The files in libpng proper only include png.h, which -includes pngconf.h. - -.SS Configuring zlib: - -There are special functions to configure the compression. Perhaps the -most useful one changes the compression level, which currently uses -input compression values in the range 0 - 9. The library normally -uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests -have shown that for a large majority of images, compression values in -the range 3-6 compress nearly as well as higher levels, and do so much -faster. For online applications it may be desirable to have maximum speed -(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also -specify no compression (Z_NO_COMPRESSION = 0), but this would create -files larger than just storing the raw bitmap. You can specify the -compression level by calling: - - png_set_compression_level(png_ptr, level); - -Another useful one is to reduce the memory level used by the library. -The memory level defaults to 8, but it can be lowered if you are -short on memory (running DOS, for example, where you only have 640K). -Note that the memory level does have an effect on compression; among -other things, lower levels will result in sections of incompressible -data being emitted in smaller stored blocks, with a correspondingly -larger relative overhead of up to 15% in the worst case. - - png_set_compression_mem_level(png_ptr, level); - -The other functions are for configuring zlib. They are not recommended -for normal use and may result in writing an invalid PNG file. See -zlib.h for more information on what these mean. - - png_set_compression_strategy(png_ptr, - strategy); - png_set_compression_window_bits(png_ptr, - window_bits); - png_set_compression_method(png_ptr, method); - png_set_compression_buffer_size(png_ptr, size); - -.SS Controlling row filtering - -If you want to control whether libpng uses filtering or not, which -filters are used, and how it goes about picking row filters, you -can call one of these functions. The selection and configuration -of row filters can have a significant impact on the size and -encoding speed and a somewhat lesser impact on the decoding speed -of an image. Filtering is enabled by default for RGB and grayscale -images (with and without alpha), but not for paletted images nor -for any images with bit depths less than 8 bits/pixel. - -The 'method' parameter sets the main filtering method, which is -currently only '0' in the PNG 1.2 specification. The 'filters' -parameter sets which filter(s), if any, should be used for each -scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS -to turn filtering on and off, respectively. - -Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB, -PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise -ORed together with '|' to specify one or more filters to use. -These filters are described in more detail in the PNG specification. -If you intend to change the filter type during the course of writing -the image, you should start with flags set for all of the filters -you intend to use so that libpng can initialize its internal -structures appropriately for all of the filter types. (Note that this -means the first row must always be adaptively filtered, because libpng -currently does not allocate the filter buffers until png_write_row() -is called for the first time.) - - filters = PNG_FILTER_NONE | PNG_FILTER_SUB - PNG_FILTER_UP | PNG_FILTER_AVG | - PNG_FILTER_PAETH | PNG_ALL_FILTERS; - - png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, - filters); - The second parameter can also be - PNG_INTRAPIXEL_DIFFERENCING if you are - writing a PNG to be embedded in a MNG - datastream. This parameter must be the - same as the value of filter_method used - in png_set_IHDR(). - -It is also possible to influence how libpng chooses from among the -available filters. This is done in one or both of two ways - by -telling it how important it is to keep the same filter for successive -rows, and by telling it the relative computational costs of the filters. - - double weights[3] = {1.5, 1.3, 1.1}, - costs[PNG_FILTER_VALUE_LAST] = - {1.0, 1.3, 1.3, 1.5, 1.7}; - - png_set_filter_heuristics(png_ptr, - PNG_FILTER_HEURISTIC_WEIGHTED, 3, - weights, costs); - -The weights are multiplying factors that indicate to libpng that the -row filter should be the same for successive rows unless another row filter -is that many times better than the previous filter. In the above example, -if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a -"sum of absolute differences" 1.5 x 1.3 times higher than other filters -and still be chosen, while the NONE filter could have a sum 1.1 times -higher than other filters and still be chosen. Unspecified weights are -taken to be 1.0, and the specified weights should probably be declining -like those above in order to emphasize recent filters over older filters. - -The filter costs specify for each filter type a relative decoding cost -to be considered when selecting row filters. This means that filters -with higher costs are less likely to be chosen over filters with lower -costs, unless their "sum of absolute differences" is that much smaller. -The costs do not necessarily reflect the exact computational speeds of -the various filters, since this would unduly influence the final image -size. - -Note that the numbers above were invented purely for this example and -are given only to help explain the function usage. Little testing has -been done to find optimum values for either the costs or the weights. - -.SS Removing unwanted object code - -There are a bunch of #define's in pngconf.h that control what parts of -libpng are compiled. All the defines end in _SUPPORTED. If you are -never going to use a capability, you can change the #define to #undef -before recompiling libpng and save yourself code and data space, or -you can turn off individual capabilities with defines that begin with -PNG_NO_. - -You can also turn all of the transforms and ancillary chunk capabilities -off en masse with compiler directives that define -PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS, -or all four, -along with directives to turn on any of the capabilities that you do -want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra -transformations but still leave the library fully capable of reading -and writing PNG files with all known public chunks. Use of the -PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library -that is incapable of reading or writing ancillary chunks. If you are -not using the progressive reading capability, you can turn that off -with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING -capability, which you'll still have). - -All the reading and writing specific code are in separate files, so the -linker should only grab the files it needs. However, if you want to -make sure, or if you are building a stand alone library, all the -reading files start with pngr and all the writing files start with -pngw. The files that don't match either (like png.c, pngtrans.c, etc.) -are used for both reading and writing, and always need to be included. -The progressive reader is in pngpread.c - -If you are creating or distributing a dynamically linked library (a .so -or DLL file), you should not remove or disable any parts of the library, -as this will cause applications linked with different versions of the -library to fail if they call functions not available in your library. -The size of the library itself should not be an issue, because only -those sections that are actually used will be loaded into memory. - -.SS Requesting debug printout - -The macro definition PNG_DEBUG can be used to request debugging -printout. Set it to an integer value in the range 0 to 3. Higher -numbers result in increasing amounts of debugging information. The -information is printed to the "stderr" file, unless another file -name is specified in the PNG_DEBUG_FILE macro definition. - -When PNG_DEBUG > 0, the following functions (macros) become available: - - png_debug(level, message) - png_debug1(level, message, p1) - png_debug2(level, message, p1, p2) - -in which "level" is compared to PNG_DEBUG to decide whether to print -the message, "message" is the formatted string to be printed, -and p1 and p2 are parameters that are to be embedded in the string -according to printf-style formatting directives. For example, - - png_debug1(2, "foo=%d\n", foo); - -is expanded to - - if(PNG_DEBUG > 2) - fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo); - -When PNG_DEBUG is defined but is zero, the macros aren't defined, but you -can still use PNG_DEBUG to control your own debugging: - - #ifdef PNG_DEBUG - fprintf(stderr, ... - #endif - -When PNG_DEBUG = 1, the macros are defined, but only png_debug statements -having level = 0 will be printed. There aren't any such statements in -this version of libpng, but if you insert some they will be printed. - -.SH VI. MNG support - -The MNG specification (available at http://www.libpng.org/pub/mng) allows -certain extensions to PNG for PNG images that are embedded in MNG datastreams. -Libpng can support some of these extensions. To enable them, use the -png_permit_mng_features() function: - - feature_set = png_permit_mng_features(png_ptr, mask) - mask is a png_uint_32 containing the bitwise OR of the - features you want to enable. These include - PNG_FLAG_MNG_EMPTY_PLTE - PNG_FLAG_MNG_FILTER_64 - PNG_ALL_MNG_FEATURES - feature_set is a png_uint_32 that is the bitwise AND of - your mask with the set of MNG features that is - supported by the version of libpng that you are using. - -It is an error to use this function when reading or writing a standalone -PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped -in a MNG datastream. As a minimum, it must have the MNG 8-byte signature -and the MHDR and MEND chunks. Libpng does not provide support for these -or any other MNG chunks; your application must provide its own support for -them. You may wish to consider using libmng (available at -http://www.libmng.com) instead. - -.SH VII. Changes to Libpng from version 0.88 - -It should be noted that versions of libpng later than 0.96 are not -distributed by the original libpng author, Guy Schalnat, nor by -Andreas Dilger, who had taken over from Guy during 1996 and 1997, and -distributed versions 0.89 through 0.96, but rather by another member -of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are -still alive and well, but they have moved on to other things. - -The old libpng functions png_read_init(), png_write_init(), -png_info_init(), png_read_destroy(), and png_write_destroy() have been -moved to PNG_INTERNAL in version 0.95 to discourage their use. These -functions will be removed from libpng version 2.0.0. - -The preferred method of creating and initializing the libpng structures is -via the png_create_read_struct(), png_create_write_struct(), and -png_create_info_struct() because they isolate the size of the structures -from the application, allow version error checking, and also allow the -use of custom error handling routines during the initialization, which -the old functions do not. The functions png_read_destroy() and -png_write_destroy() do not actually free the memory that libpng -allocated for these structs, but just reset the data structures, so they -can be used instead of png_destroy_read_struct() and -png_destroy_write_struct() if you feel there is too much system overhead -allocating and freeing the png_struct for each image read. - -Setting the error callbacks via png_set_message_fn() before -png_read_init() as was suggested in libpng-0.88 is no longer supported -because this caused applications that do not use custom error functions -to fail if the png_ptr was not initialized to zero. It is still possible -to set the error callbacks AFTER png_read_init(), or to change them with -png_set_error_fn(), which is essentially the same function, but with a new -name to force compilation errors with applications that try to use the old -method. - -Starting with version 1.0.7, you can find out which version of the library -you are using at run-time: - - png_uint_32 libpng_vn = png_access_version_number(); - -The number libpng_vn is constructed from the major version, minor -version with leading zero, and release number with leading zero, -(e.g., libpng_vn for version 1.0.7 is 10007). - -You can also check which version of png.h you used when compiling your -application: - - png_uint_32 application_vn = PNG_LIBPNG_VER; - -.SH VIII. Changes to Libpng from version 1.0.x to 1.2.x - -Support for user memory management was enabled by default. To -accomplish this, the functions png_create_read_struct_2(), -png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(), -png_malloc_default(), and png_free_default() were added. - -Support for the iTXt chunk has been enabled by default as of -version 1.2.41. - -Support for certain MNG features was enabled. - -Support for numbered error messages was added. However, we never got -around to actually numbering the error messages. The function -png_set_strip_error_numbers() was added (Note: the prototype for this -function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE -builds of libpng-1.2.15. It was restored in libpng-1.2.36). - -The png_malloc_warn() function was added at libpng-1.2.3. This issues -a png_warning and returns NULL instead of aborting when it fails to -acquire the requested memory allocation. - -Support for setting user limits on image width and height was enabled -by default. The functions png_set_user_limits(), png_get_user_width_max(), -and png_get_user_height_max() were added at libpng-1.2.6. - -The png_set_add_alpha() function was added at libpng-1.2.7. - -The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9. -Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the -tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is -deprecated. - -A number of macro definitions in support of runtime selection of -assembler code features (especially Intel MMX code support) were -added at libpng-1.2.0: - - PNG_ASM_FLAG_MMX_SUPPORT_COMPILED - PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU - PNG_ASM_FLAG_MMX_READ_COMBINE_ROW - PNG_ASM_FLAG_MMX_READ_INTERLACE - PNG_ASM_FLAG_MMX_READ_FILTER_SUB - PNG_ASM_FLAG_MMX_READ_FILTER_UP - PNG_ASM_FLAG_MMX_READ_FILTER_AVG - PNG_ASM_FLAG_MMX_READ_FILTER_PAETH - PNG_ASM_FLAGS_INITIALIZED - PNG_MMX_READ_FLAGS - PNG_MMX_FLAGS - PNG_MMX_WRITE_FLAGS - PNG_MMX_FLAGS - -We added the following functions in support of runtime -selection of assembler code features: - - png_get_mmx_flagmask() - png_set_mmx_thresholds() - png_get_asm_flags() - png_get_mmx_bitdepth_threshold() - png_get_mmx_rowbytes_threshold() - png_set_asm_flags() - -We replaced all of these functions with simple stubs in libpng-1.2.20, -when the Intel assembler code was removed due to a licensing issue. - -These macros are deprecated: - - PNG_READ_TRANSFORMS_NOT_SUPPORTED - PNG_PROGRESSIVE_READ_NOT_SUPPORTED - PNG_NO_SEQUENTIAL_READ_SUPPORTED - PNG_WRITE_TRANSFORMS_NOT_SUPPORTED - PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED - PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED - -They have been replaced, respectively, by: - - PNG_NO_READ_TRANSFORMS - PNG_NO_PROGRESSIVE_READ - PNG_NO_SEQUENTIAL_READ - PNG_NO_WRITE_TRANSFORMS - PNG_NO_READ_ANCILLARY_CHUNKS - PNG_NO_WRITE_ANCILLARY_CHUNKS - -PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been -deprecated since libpng-1.0.16 and libpng-1.2.6. - -The function - png_check_sig(sig, num) -was replaced with - !png_sig_cmp(sig, 0, num) -It has been deprecated since libpng-0.90. - -The function - png_set_gray_1_2_4_to_8() -which also expands tRNS to alpha was replaced with - png_set_expand_gray_1_2_4_to_8() -which does not. It has been deprecated since libpng-1.0.18 and 1.2.9. - -.SH IX. (Omitted) - - -.SH X. Detecting libpng - -The png_get_io_ptr() function has been present since libpng-0.88, has never -changed, and is unaffected by conditional compilation macros. It is the -best choice for use in configure scripts for detecting the presence of any -libpng version since 0.88. In an autoconf "configure.in" you could use - - AC_CHECK_LIB(png, png_get_io_ptr, ... - -.SH XI. Source code repository - -Since about February 2009, version 1.2.34, libpng has been under "git" source -control. The git repository was built from old libpng-x.y.z.tar.gz files -going back to version 0.70. You can access the git repository (read only) -at - - git://libpng.git.sourceforge.net/gitroot/libpng - -or you can browse it via "gitweb" at - - http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng - -Patches can be sent to glennrp at users.sourceforge.net or to -png-mng-implement at lists.sourceforge.net or you can upload them to -the libpng bug tracker at - - http://libpng.sourceforge.net - -.SH XII. Coding style - -Our coding style is similar to the "Allman" style, with curly -braces on separate lines: - - if (condition) - { - action; - } - - else if (another condition) - { - another action; - } - -The braces can be omitted from simple one-line actions: - - if (condition) - return (0); - -We use 3-space indentation, except for continued statements which -are usually indented the same as the first line of the statement -plus four more spaces. - -For macro definitions we use 2-space indentation, always leaving the "#" -in the first column. - - #ifndef PNG_NO_FEATURE - # ifndef PNG_FEATURE_SUPPORTED - # define PNG_FEATURE_SUPPORTED - # endif - #endif - -Comments appear with the leading "/*" at the same indentation as -the statement that follows the comment: - - /* Single-line comment */ - statement; - - /* Multiple-line - * comment - */ - statement; - -Very short comments can be placed at the end of the statement -to which they pertain: - - statement; /* comment */ - -We don't use C++ style ("//") comments. We have, however, -used them in the past in some now-abandoned MMX assembler -code. - -Functions and their curly braces are not indented, and -exported functions are marked with PNGAPI: - - /* This is a public function that is visible to - * application programers. It does thus-and-so. - */ - void PNGAPI - png_exported_function(png_ptr, png_info, foo) - { - body; - } - -The prototypes for all exported functions appear in png.h, -above the comment that says - - /* Maintainer: Put new public prototypes here ... */ - -We mark all non-exported functions with "/* PRIVATE */"": - - void /* PRIVATE */ - png_non_exported_function(png_ptr, png_info, foo) - { - body; - } - -The prototypes for non-exported functions (except for those in -pngtest) appear in -the PNG_INTERNAL section of png.h -above the comment that says - - /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ - -The names of all exported functions and variables begin -with "png_", and all publicly visible C preprocessor -macros begin with "PNG_". - -We put a space after each comma and after each semicolon -in "for" statments, and we put spaces before and after each -C binary operator and after "for" or "while". We don't -put a space between a typecast and the expression being -cast, nor do we put one between a function name and the -left parenthesis that follows it: - - for (i = 2; i > 0; --i) - y[i] = a(x) + (int)b; - -We prefer #ifdef and #ifndef to #if defined() and if !defined() -when there is only one macro being tested. - -We do not use the TAB character for indentation in the C sources. - -Lines do not exceed 80 characters. - -Other rules can be inferred by inspecting the libpng source. - -.SH XIII. Y2K Compliance in libpng - -June 26, 2010 - -Since the PNG Development group is an ad-hoc body, we can't make -an official declaration. - -This is your unofficial assurance that libpng from version 0.71 and -upward through 1.2.44 are Y2K compliant. It is my belief that earlier -versions were also Y2K compliant. - -Libpng only has three year fields. One is a 2-byte unsigned integer that -will hold years up to 65535. The other two hold the date in text -format, and will hold years up to 9999. - -The integer is - "png_uint_16 year" in png_time_struct. - -The strings are - "png_charp time_buffer" in png_struct and - "near_time_buffer", which is a local character string in png.c. - -There are seven time-related functions: - - png_convert_to_rfc_1123() in png.c - (formerly png_convert_to_rfc_1152() in error) - png_convert_from_struct_tm() in pngwrite.c, called - in pngwrite.c - png_convert_from_time_t() in pngwrite.c - png_get_tIME() in pngget.c - png_handle_tIME() in pngrutil.c, called in pngread.c - png_set_tIME() in pngset.c - png_write_tIME() in pngwutil.c, called in pngwrite.c - -All appear to handle dates properly in a Y2K environment. The -png_convert_from_time_t() function calls gmtime() to convert from system -clock time, which returns (year - 1900), which we properly convert to -the full 4-digit year. There is a possibility that applications using -libpng are not passing 4-digit years into the png_convert_to_rfc_1123() -function, or that they are incorrectly passing only a 2-digit year -instead of "year - 1900" into the png_convert_from_struct_tm() function, -but this is not under our control. The libpng documentation has always -stated that it works with 4-digit years, and the APIs have been -documented as such. - -The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned -integer to hold the year, and can hold years as large as 65535. - -zlib, upon which libpng depends, is also Y2K compliant. It contains -no date-related code. - - - Glenn Randers-Pehrson - libpng maintainer - PNG Development Group - -.SH NOTE - -Note about libpng version numbers: - -Due to various miscommunications, unforeseen code incompatibilities -and occasional factors outside the authors' control, version numbering -on the library has not always been consistent and straightforward. -The following table summarizes matters since version 0.89c, which was -the first widely used release: - - source png.h png.h shared-lib - version string int version - ------- ------ ----- ---------- - 0.89c ("beta 3") 0.89 89 1.0.89 - 0.90 ("beta 4") 0.90 90 0.90 - 0.95 ("beta 5") 0.95 95 0.95 - 0.96 ("beta 6") 0.96 96 0.96 - 0.97b ("beta 7") 1.00.97 97 1.0.1 - 0.97c 0.97 97 2.0.97 - 0.98 0.98 98 2.0.98 - 0.99 0.99 98 2.0.99 - 0.99a-m 0.99 99 2.0.99 - 1.00 1.00 100 2.1.0 - 1.0.0 1.0.0 100 2.1.0 - 1.0.0 (from here on, the 100 2.1.0 - 1.0.1 png.h string is 10001 2.1.0 - 1.0.1a-e identical to the 10002 from here on, the - 1.0.2 source version) 10002 shared library is 2.V - 1.0.2a-b 10003 where V is the source - 1.0.1 10001 code version except as - 1.0.1a-e 10002 2.1.0.1a-e noted. - 1.0.2 10002 2.1.0.2 - 1.0.2a-b 10003 2.1.0.2a-b - 1.0.3 10003 2.1.0.3 - 1.0.3a-d 10004 2.1.0.3a-d - 1.0.4 10004 2.1.0.4 - 1.0.4a-f 10005 2.1.0.4a-f - 1.0.5 (+ 2 patches) 10005 2.1.0.5 - 1.0.5a-d 10006 2.1.0.5a-d - 1.0.5e-r 10100 2.1.0.5e-r - 1.0.5s-v 10006 2.1.0.5s-v - 1.0.6 (+ 3 patches) 10006 2.1.0.6 - 1.0.6d-g 10007 2.1.0.6d-g - 1.0.6h 10007 10.6h - 1.0.6i 10007 10.6i - 1.0.6j 10007 2.1.0.6j - 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 - 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 - 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 - 1.0.7 1 10007 2.1.0.7 - 1.0.8beta1-4 1 10008 2.1.0.8beta1-4 - 1.0.8rc1 1 10008 2.1.0.8rc1 - 1.0.8 1 10008 2.1.0.8 - 1.0.9beta1-6 1 10009 2.1.0.9beta1-6 - 1.0.9rc1 1 10009 2.1.0.9rc1 - 1.0.9beta7-10 1 10009 2.1.0.9beta7-10 - 1.0.9rc2 1 10009 2.1.0.9rc2 - 1.0.9 1 10009 2.1.0.9 - 1.0.10beta1 1 10010 2.1.0.10beta1 - 1.0.10rc1 1 10010 2.1.0.10rc1 - 1.0.10 1 10010 2.1.0.10 - 1.0.11beta1-3 1 10011 2.1.0.11beta1-3 - 1.0.11rc1 1 10011 2.1.0.11rc1 - 1.0.11 1 10011 2.1.0.11 - 1.0.12beta1-2 2 10012 2.1.0.12beta1-2 - 1.0.12rc1 2 10012 2.1.0.12rc1 - 1.0.12 2 10012 2.1.0.12 - 1.1.0a-f - 10100 2.1.1.0a-f abandoned - 1.2.0beta1-2 2 10200 2.1.2.0beta1-2 - 1.2.0beta3-5 3 10200 3.1.2.0beta3-5 - 1.2.0rc1 3 10200 3.1.2.0rc1 - 1.2.0 3 10200 3.1.2.0 - 1.2.1beta-4 3 10201 3.1.2.1beta1-4 - 1.2.1rc1-2 3 10201 3.1.2.1rc1-2 - 1.2.1 3 10201 3.1.2.1 - 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6 - 1.0.13beta1 10 10013 10.so.0.1.0.13beta1 - 1.0.13rc1 10 10013 10.so.0.1.0.13rc1 - 1.2.2rc1 12 10202 12.so.0.1.2.2rc1 - 1.0.13 10 10013 10.so.0.1.0.13 - 1.2.2 12 10202 12.so.0.1.2.2 - 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6 - 1.2.3 12 10203 12.so.0.1.2.3 - 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3 - 1.2.4rc1 13 10204 12.so.0.1.2.4rc1 - 1.0.14 10 10014 10.so.0.1.0.14 - 1.2.4 13 10204 12.so.0.1.2.4 - 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2 - 1.0.15rc1 10 10015 10.so.0.1.0.15rc1 - 1.0.15 10 10015 10.so.0.1.0.15 - 1.2.5 13 10205 12.so.0.1.2.5 - 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4 - 1.2.6rc1-5 13 10206 12.so.0.1.2.6rc1-5 - 1.0.16 10 10016 10.so.0.1.0.16 - 1.2.6 13 10206 12.so.0.1.2.6 - 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2 - 1.0.17rc1 10 10017 10.so.0.1.0.17rc1 - 1.2.7rc1 13 10207 12.so.0.1.2.7rc1 - 1.0.17 10 10017 10.so.0.1.0.17 - 1.2.7 13 10207 12.so.0.1.2.7 - 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5 - 1.0.18rc1-5 10 10018 10.so.0.1.0.18rc1-5 - 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5 - 1.0.18 10 10018 10.so.0.1.0.18 - 1.2.8 13 10208 12.so.0.1.2.8 - 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3 - 1.2.9beta4-11 13 10209 12.so.0.9[.0] - 1.2.9rc1 13 10209 12.so.0.9[.0] - 1.2.9 13 10209 12.so.0.9[.0] - 1.2.10beta1-8 13 10210 12.so.0.10[.0] - 1.2.10rc1-3 13 10210 12.so.0.10[.0] - 1.2.10 13 10210 12.so.0.10[.0] - 1.2.11beta1-4 13 10211 12.so.0.11[.0] - 1.0.19rc1-5 10 10019 10.so.0.19[.0] - 1.2.11rc1-5 13 10211 12.so.0.11[.0] - 1.0.19 10 10019 10.so.0.19[.0] - 1.2.11 13 10211 12.so.0.11[.0] - 1.0.20 10 10020 10.so.0.20[.0] - 1.2.12 13 10212 12.so.0.12[.0] - 1.2.13beta1 13 10213 12.so.0.13[.0] - 1.0.21 10 10021 10.so.0.21[.0] - 1.2.13 13 10213 12.so.0.13[.0] - 1.2.14beta1-2 13 10214 12.so.0.14[.0] - 1.0.22rc1 10 10022 10.so.0.22[.0] - 1.2.14rc1 13 10214 12.so.0.14[.0] - 1.2.15beta1-6 13 10215 12.so.0.15[.0] - 1.0.23rc1-5 10 10023 10.so.0.23[.0] - 1.2.15rc1-5 13 10215 12.so.0.15[.0] - 1.0.23 10 10023 10.so.0.23[.0] - 1.2.15 13 10215 12.so.0.15[.0] - 1.2.16beta1-2 13 10216 12.so.0.16[.0] - 1.2.16rc1 13 10216 12.so.0.16[.0] - 1.0.24 10 10024 10.so.0.24[.0] - 1.2.16 13 10216 12.so.0.16[.0] - 1.2.17beta1-2 13 10217 12.so.0.17[.0] - 1.0.25rc1 10 10025 10.so.0.25[.0] - 1.2.17rc1-3 13 10217 12.so.0.17[.0] - 1.0.25 10 10025 10.so.0.25[.0] - 1.2.17 13 10217 12.so.0.17[.0] - 1.0.26 10 10026 10.so.0.26[.0] - 1.2.18 13 10218 12.so.0.18[.0] - 1.2.19beta1-31 13 10219 12.so.0.19[.0] - 1.0.27rc1-6 10 10027 10.so.0.27[.0] - 1.2.19rc1-6 13 10219 12.so.0.19[.0] - 1.0.27 10 10027 10.so.0.27[.0] - 1.2.19 13 10219 12.so.0.19[.0] - 1.2.20beta01-04 13 10220 12.so.0.20[.0] - 1.0.28rc1-6 10 10028 10.so.0.28[.0] - 1.2.20rc1-6 13 10220 12.so.0.20[.0] - 1.0.28 10 10028 10.so.0.28[.0] - 1.2.20 13 10220 12.so.0.20[.0] - 1.2.21beta1-2 13 10221 12.so.0.21[.0] - 1.2.21rc1-3 13 10221 12.so.0.21[.0] - 1.0.29 10 10029 10.so.0.29[.0] - 1.2.21 13 10221 12.so.0.21[.0] - 1.2.22beta1-4 13 10222 12.so.0.22[.0] - 1.0.30rc1 13 10030 10.so.0.30[.0] - 1.2.22rc1 13 10222 12.so.0.22[.0] - 1.0.30 10 10030 10.so.0.30[.0] - 1.2.22 13 10222 12.so.0.22[.0] - 1.2.23beta01-05 13 10223 12.so.0.23[.0] - 1.2.23rc01 13 10223 12.so.0.23[.0] - 1.2.23 13 10223 12.so.0.23[.0] - 1.2.24beta01-02 13 10224 12.so.0.24[.0] - 1.2.24rc01 13 10224 12.so.0.24[.0] - 1.2.24 13 10224 12.so.0.24[.0] - 1.2.25beta01-06 13 10225 12.so.0.25[.0] - 1.2.25rc01-02 13 10225 12.so.0.25[.0] - 1.0.31 10 10031 10.so.0.31[.0] - 1.2.25 13 10225 12.so.0.25[.0] - 1.2.26beta01-06 13 10226 12.so.0.26[.0] - 1.2.26rc01 13 10226 12.so.0.26[.0] - 1.2.26 13 10226 12.so.0.26[.0] - 1.0.32 10 10032 10.so.0.32[.0] - 1.2.27beta01-06 13 10227 12.so.0.27[.0] - 1.2.27rc01 13 10227 12.so.0.27[.0] - 1.0.33 10 10033 10.so.0.33[.0] - 1.2.27 13 10227 12.so.0.27[.0] - 1.0.34 10 10034 10.so.0.34[.0] - 1.2.28 13 10228 12.so.0.28[.0] - 1.2.29beta01-03 13 10229 12.so.0.29[.0] - 1.2.29rc01 13 10229 12.so.0.29[.0] - 1.0.35 10 10035 10.so.0.35[.0] - 1.2.29 13 10229 12.so.0.29[.0] - 1.0.37 10 10037 10.so.0.37[.0] - 1.2.30beta01-04 13 10230 12.so.0.30[.0] - 1.0.38rc01-08 10 10038 10.so.0.38[.0] - 1.2.30rc01-08 13 10230 12.so.0.30[.0] - 1.0.38 10 10038 10.so.0.38[.0] - 1.2.30 13 10230 12.so.0.30[.0] - 1.0.39rc01-03 10 10039 10.so.0.39[.0] - 1.2.31rc01-03 13 10231 12.so.0.31[.0] - 1.0.39 10 10039 10.so.0.39[.0] - 1.2.31 13 10231 12.so.0.31[.0] - 1.2.32beta01-02 13 10232 12.so.0.32[.0] - 1.0.40rc01 10 10040 10.so.0.40[.0] - 1.2.32rc01 13 10232 12.so.0.32[.0] - 1.0.40 10 10040 10.so.0.40[.0] - 1.2.32 13 10232 12.so.0.32[.0] - 1.2.33beta01-02 13 10233 12.so.0.33[.0] - 1.2.33rc01-02 13 10233 12.so.0.33[.0] - 1.0.41rc01 10 10041 10.so.0.41[.0] - 1.2.33 13 10233 12.so.0.33[.0] - 1.0.41 10 10041 10.so.0.41[.0] - 1.2.34beta01-07 13 10234 12.so.0.34[.0] - 1.0.42rc01 10 10042 10.so.0.42[.0] - 1.2.34rc01 13 10234 12.so.0.34[.0] - 1.0.42 10 10042 10.so.0.42[.0] - 1.2.34 13 10234 12.so.0.34[.0] - 1.2.35beta01-03 13 10235 12.so.0.35[.0] - 1.0.43rc01-02 10 10043 10.so.0.43[.0] - 1.2.35rc01-02 13 10235 12.so.0.35[.0] - 1.0.43 10 10043 10.so.0.43[.0] - 1.2.35 13 10235 12.so.0.35[.0] - 1.2.36beta01-05 13 10236 12.so.0.36[.0] - 1.2.36rc01 13 10236 12.so.0.36[.0] - 1.0.44 10 10044 10.so.0.44[.0] - 1.2.36 13 10236 12.so.0.36[.0] - 1.2.37beta01-03 13 10237 12.so.0.37[.0] - 1.2.37rc01 13 10237 12.so.0.37[.0] - 1.2.37 13 10237 12.so.0.37[.0] - 1.2.45 10 10045 12.so.0.45[.0] - 1.0.46 10 10046 10.so.0.46[.0] - 1.2.38beta01 13 10238 12.so.0.38[.0] - 1.2.38rc01-03 13 10238 12.so.0.38[.0] - 1.0.47 10 10047 10.so.0.47[.0] - 1.2.38 13 10238 12.so.0.38[.0] - 1.2.39beta01-05 13 10239 12.so.0.39[.0] - 1.2.39rc01 13 10239 12.so.0.39[.0] - 1.0.48 10 10048 10.so.0.48[.0] - 1.2.39 13 10239 12.so.0.39[.0] - 1.2.40beta01 13 10240 12.so.0.40[.0] - 1.2.40rc01 13 10240 12.so.0.40[.0] - 1.0.49 10 10049 10.so.0.49[.0] - 1.2.40 13 10240 12.so.0.40[.0] - 1.0.50 10 10050 10.so.0.50[.0] - 1.2.41beta01-18 13 10241 12.so.0.41[.0] - 1.0.51rc01 10 10051 10.so.0.51[.0] - 1.2.41rc01-03 13 10241 12.so.0.41[.0] - 1.0.51 10 10051 10.so.0.51[.0] - 1.2.41 13 10241 12.so.0.41[.0] - 1.2.42beta01-02 13 10242 12.so.0.42[.0] - 1.2.42rc01-05 13 10242 12.so.0.42[.0] - 1.0.52 10 10052 10.so.0.52[.0] - 1.2.42 13 10242 12.so.0.42[.0] - 1.2.43beta01-05 13 10243 12.so.0.43[.0] - 1.0.53rc01-02 10 10053 10.so.0.53[.0] - 1.2.43rc01-02 13 10243 12.so.0.43[.0] - 1.0.53 10 10053 10.so.0.53[.0] - 1.2.43 13 10243 12.so.0.43[.0] - 1.2.44beta01-03 13 10244 12.so.0.44[.0] - 1.2.44rc01-03 13 10244 12.so.0.44[.0] - 1.2.44 13 10244 12.so.0.44[.0] - -Henceforth the source version will match the shared-library minor -and patch numbers; the shared-library major version number will be -used for changes in backward compatibility, as it is intended. The -PNG_PNGLIB_VER macro, which is not used within libpng but is available -for applications, is an unsigned integer of the form xyyzz corresponding -to the source version x.y.z (leading zeros in y and z). Beta versions -were given the previous public release number plus a letter, until -version 1.0.6j; from then on they were given the upcoming public -release number plus "betaNN" or "rcN". - -.SH "SEE ALSO" -.IR libpngpf(3) ", " png(5) -.LP -.IR libpng : -.IP -http://libpng.sourceforge.net (follow the [DOWNLOAD] link) -http://www.libpng.org/pub/png - -.LP -.IR zlib : -.IP -(generally) at the same location as -.I libpng -or at -.br -ftp://ftp.info-zip.org/pub/infozip/zlib - -.LP -.IR PNG specification: RFC 2083 -.IP -(generally) at the same location as -.I libpng -or at -.br -ftp://ftp.rfc-editor.org:/in-notes/rfc2083.txt -.br -or (as a W3C Recommendation) at -.br -http://www.w3.org/TR/REC-png.html - -.LP -In the case of any inconsistency between the PNG specification -and this library, the specification takes precedence. - -.SH AUTHORS -This man page: Glenn Randers-Pehrson -<glennrp at users.sourceforge.net> - -The contributing authors would like to thank all those who helped -with testing, bug fixes, and patience. This wouldn't have been -possible without all of you. - -Thanks to Frank J. T. Wojcik for helping with the documentation. - -Libpng version 1.2.44 - June 26, 2010: -Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. -Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net). - -Supported by the PNG development group -.br -png-mng-implement at lists.sf.net -(subscription required; visit -png-mng-implement at lists.sourceforge.net (subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe). - -.SH COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: - -(This copy of the libpng notices is provided for your convenience. In case of -any discrepancy between this copy and the notices in the file png.h that is -included in the libpng distribution, the latter shall prevail.) - -If you modify libpng you may insert additional notices immediately following -this sentence. - -This code is released under the libpng license. - -libpng versions 1.2.6, August 15, 2004, through 1.2.44, June 26, 2010, are -Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are -distributed according to the same disclaimer and license as libpng-1.2.5 -with the following individual added to the list of Contributing Authors - - Cosmin Truta - -libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are -Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are -distributed according to the same disclaimer and license as libpng-1.0.6 -with the following individuals added to the list of Contributing Authors - - Simon-Pierre Cadieux - Eric S. Raymond - Gilles Vollant - -and with the following additions to the disclaimer: - - There is no warranty against interference with your - enjoyment of the library or against infringement. - There is no warranty that our efforts or the library - will fulfill any of your particular purposes or needs. - This library is provided with all faults, and the entire - risk of satisfactory quality, performance, accuracy, and - effort is with the user. - -libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are -Copyright (c) 1998, 1999 Glenn Randers-Pehrson -Distributed according to the same disclaimer and license as libpng-0.96, -with the following individuals added to the list of Contributing Authors: - - Tom Lane - Glenn Randers-Pehrson - Willem van Schaik - -libpng versions 0.89, June 1996, through 0.96, May 1997, are -Copyright (c) 1996, 1997 Andreas Dilger -Distributed according to the same disclaimer and license as libpng-0.88, -with the following individuals added to the list of Contributing Authors: - - John Bowler - Kevin Bracey - Sam Bushell - Magnus Holmgren - Greg Roelofs - Tom Tanner - -libpng versions 0.5, May 1995, through 0.88, January 1996, are -Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. - -For the purposes of this copyright and license, "Contributing Authors" -is defined as the following set of individuals: - - Andreas Dilger - Dave Martindale - Guy Eric Schalnat - Paul Schmidt - Tim Wegner - -The PNG Reference Library is supplied "AS IS". The Contributing Authors -and Group 42, Inc. disclaim all warranties, expressed or implied, -including, without limitation, the warranties of merchantability and of -fitness for any purpose. The Contributing Authors and Group 42, Inc. -assume no liability for direct, indirect, incidental, special, exemplary, -or consequential damages, which may result from the use of the PNG -Reference Library, even if advised of the possibility of such damage. - -Permission is hereby granted to use, copy, modify, and distribute this -source code, or portions hereof, for any purpose, without fee, subject -to the following restrictions: - -1. The origin of this source code must not be misrepresented. - -2. Altered versions must be plainly marked as such and - must not be misrepresented as being the original source. - -3. This Copyright notice may not be removed or altered from - any source or altered source distribution. - -The Contributing Authors and Group 42, Inc. specifically permit, without -fee, and encourage the use of this source code as a component to -supporting the PNG file format in commercial products. If you use this -source code in a product, acknowledgment is not required but would be -appreciated. - - -A "png_get_copyright" function is available, for convenient use in "about" -boxes and the like: - - printf("%s",png_get_copyright(NULL)); - -Also, the PNG logo (in PNG format, of course) is supplied in the -files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). - -Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a -certification mark of the Open Source Initiative. - -Glenn Randers-Pehrson -glennrp at users.sourceforge.net -June 26, 2010 - -.\" end of man page - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpngpf.3 b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpngpf.3 deleted file mode 100644 index c2da624..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/libpngpf.3 +++ /dev/null @@ -1,806 +0,0 @@ -.TH LIBPNGPF 3 "June 26, 2010" -.SH NAME -libpng \- Portable Network Graphics (PNG) Reference Library 1.2.44 -(private functions) -.SH SYNOPSIS -\fB#include <png.h>\fP - -\fI\fB - -\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product, - -\fBunsigned long \fI*lo_product\fP\fB);\fP - -\fI\fB - -\fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBpng_uint_32 png_read_chunk_header (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP - -\fI\fB - -\fI\fB - -\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP - -\fI\fB - -\fI\fB - -.SH DESCRIPTION -The functions listed above are used privately by libpng -and are not recommended for use by applications. They are -not "exported" to applications using shared libraries. They -are listed alphabetically here as an aid to libpng maintainers. -See png.h for more information on these functions. - -.SH SEE ALSO -.IR libpng(3) ", " png(5) -.SH AUTHOR -Glenn Randers-Pehrson diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.5 b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.5 deleted file mode 100644 index 645c80c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.5 +++ /dev/null @@ -1,74 +0,0 @@ -.TH PNG 5 "June 26, 2010" -.SH NAME -png \- Portable Network Graphics (PNG) format -.SH DESCRIPTION -PNG (Portable Network Graphics) is an extensible file format for the -lossless, portable, well-compressed storage of raster images. PNG provides -a patent-free replacement for GIF and can also replace many -common uses of TIFF. Indexed-color, grayscale, and truecolor images are -supported, plus an optional alpha channel. Sample depths range from -1 to 16 bits. -.br - -PNG is designed to work well in online viewing applications, such as the -World Wide Web, so it is fully streamable with a progressive display -option. PNG is robust, providing both full file integrity checking and -fast, simple detection of common transmission errors. Also, PNG can store -gamma and chromaticity data for improved color matching on heterogeneous -platforms. - -.SH "SEE ALSO" -.IR libpng(3) ", " zlib(3) ", " deflate(5) ", and " zlib(5) -.LP -PNG specification (second edition), November 2003: -.IP -.br - <http://www.w3.org/TR/2003/REC-PNG-20031110/ -PNG 1.2 specification, July 1999: -.IP -.br -http://www.libpng.org/pub/png -.LP -PNG 1.0 specification, October 1996: -.IP -.br -RFC 2083 -.IP -.br -ftp://ftp.rfc-editor.org:/in-notes/rfc2083.txt -.br -or (as a W3C Recommendation) at -.br -http://www.w3.org/TR/REC-png.html -.SH AUTHORS -This man page: Glenn Randers-Pehrson -.LP -Portable Network Graphics (PNG) Specification (Second Edition) -Information technology - Computer graphics and image processing - -Portable Network Graphics (PNG): Functional specification. -ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others. -.LP -Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999): -Glenn Randers-Pehrson and others (png-list). -.LP -Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996): -Thomas Boutell and others (png-list). -.LP - - -.SH COPYRIGHT NOTICE -.LP -This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h -for conditions of use and distribution. -.LP -The PNG Specification (Second Edition) is -Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved. -.LP -The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson. -See the specification for conditions of use and distribution. -.LP -The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of -Technology. See the specification for conditions of use and distribution. -.LP -.\" end of man page - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.c deleted file mode 100644 index 7ad9538..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/png.c +++ /dev/null @@ -1,1100 +0,0 @@ - -/* png.c - location for general purpose libpng functions - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#define PNG_INTERNAL -#define PNG_NO_EXTERN -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" - -/* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_44 Your_png_h_is_not_version_1_2_44; - -/* Version information for C files. This had better match the version - * string defined in png.h. - */ - -#ifdef PNG_USE_GLOBAL_ARRAYS -/* png_libpng_ver was changed to a function in version 1.0.5c */ -PNG_CONST char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING; - -#ifdef PNG_READ_SUPPORTED - -/* png_sig was changed to a function in version 1.0.5c */ -/* Place to hold the signature string for a PNG file. */ -PNG_CONST png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; -#endif /* PNG_READ_SUPPORTED */ - -/* Invoke global declarations for constant strings for known chunk types */ -PNG_IHDR; -PNG_IDAT; -PNG_IEND; -PNG_PLTE; -PNG_bKGD; -PNG_cHRM; -PNG_gAMA; -PNG_hIST; -PNG_iCCP; -PNG_iTXt; -PNG_oFFs; -PNG_pCAL; -PNG_sCAL; -PNG_pHYs; -PNG_sBIT; -PNG_sPLT; -PNG_sRGB; -PNG_tEXt; -PNG_tIME; -PNG_tRNS; -PNG_zTXt; - -#ifdef PNG_READ_SUPPORTED -/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - -/* Start of interlace block */ -PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; - -/* Offset to next interlace block */ -PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; - -/* Start of interlace block in the y direction */ -PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; - -/* Offset to next interlace block in the y direction */ -PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; - -/* Height of interlace block. This is not currently used - if you need - * it, uncomment it here and in png.h -PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1}; -*/ - -/* Mask to determine which pixels are valid in a pass */ -PNG_CONST int FARDATA png_pass_mask[] = - {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}; - -/* Mask to determine which pixels to overwrite while displaying */ -PNG_CONST int FARDATA png_pass_dsp_mask[] - = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}; - -#endif /* PNG_READ_SUPPORTED */ -#endif /* PNG_USE_GLOBAL_ARRAYS */ - -/* Tells libpng that we have already handled the first "num_bytes" bytes - * of the PNG file signature. If the PNG data is embedded into another - * stream we can set num_bytes = 8 so that libpng will not attempt to read - * or write any of the magic bytes before it starts on the IHDR. - */ - -#ifdef PNG_READ_SUPPORTED -void PNGAPI -png_set_sig_bytes(png_structp png_ptr, int num_bytes) -{ - png_debug(1, "in png_set_sig_bytes"); - - if (png_ptr == NULL) - return; - - if (num_bytes > 8) - png_error(png_ptr, "Too many bytes for PNG signature."); - - png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes); -} - -/* Checks whether the supplied bytes match the PNG signature. We allow - * checking less than the full 8-byte signature so that those apps that - * already read the first few bytes of a file to determine the file type - * can simply check the remaining bytes for extra assurance. Returns - * an integer less than, equal to, or greater than zero if sig is found, - * respectively, to be less than, to match, or be greater than the correct - * PNG signature (this is the same behaviour as strcmp, memcmp, etc). - */ -int PNGAPI -png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check) -{ - png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - if (num_to_check > 8) - num_to_check = 8; - else if (num_to_check < 1) - return (-1); - - if (start > 7) - return (-1); - - if (start + num_to_check > 8) - num_to_check = 8 - start; - - return ((int)(png_memcmp(&sig[start], &png_signature[start], num_to_check))); -} - -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -/* (Obsolete) function to check signature bytes. It does not allow one - * to check a partial signature. This function might be removed in the - * future - use png_sig_cmp(). Returns true (nonzero) if the file is PNG. - */ -int PNGAPI -png_check_sig(png_bytep sig, int num) -{ - return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num)); -} -#endif -#endif /* PNG_READ_SUPPORTED */ - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -/* Function to allocate memory for zlib and clear it to 0. */ -#ifdef PNG_1_0_X -voidpf PNGAPI -#else -voidpf /* PRIVATE */ -#endif -png_zalloc(voidpf png_ptr, uInt items, uInt size) -{ - png_voidp ptr; - png_structp p=(png_structp)png_ptr; - png_uint_32 save_flags=p->flags; - png_uint_32 num_bytes; - - if (png_ptr == NULL) - return (NULL); - if (items > PNG_UINT_32_MAX/size) - { - png_warning (p, "Potential overflow in png_zalloc()"); - return (NULL); - } - num_bytes = (png_uint_32)items * size; - - p->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK; - ptr = (png_voidp)png_malloc((png_structp)png_ptr, num_bytes); - p->flags=save_flags; - -#if defined(PNG_1_0_X) && !defined(PNG_NO_ZALLOC_ZERO) - if (ptr == NULL) - return ((voidpf)ptr); - - if (num_bytes > (png_uint_32)0x8000L) - { - png_memset(ptr, 0, (png_size_t)0x8000L); - png_memset((png_bytep)ptr + (png_size_t)0x8000L, 0, - (png_size_t)(num_bytes - (png_uint_32)0x8000L)); - } - else - { - png_memset(ptr, 0, (png_size_t)num_bytes); - } -#endif - return ((voidpf)ptr); -} - -/* Function to free memory for zlib */ -#ifdef PNG_1_0_X -void PNGAPI -#else -void /* PRIVATE */ -#endif -png_zfree(voidpf png_ptr, voidpf ptr) -{ - png_free((png_structp)png_ptr, (png_voidp)ptr); -} - -/* Reset the CRC variable to 32 bits of 1's. Care must be taken - * in case CRC is > 32 bits to leave the top bits 0. - */ -void /* PRIVATE */ -png_reset_crc(png_structp png_ptr) -{ - png_ptr->crc = crc32(0, Z_NULL, 0); -} - -/* Calculate the CRC over a section of data. We can only pass as - * much data to this routine as the largest single buffer size. We - * also check that this data will actually be used before going to the - * trouble of calculating it. - */ -void /* PRIVATE */ -png_calculate_crc(png_structp png_ptr, png_bytep ptr, png_size_t length) -{ - int need_crc = 1; - - if (png_ptr->chunk_name[0] & 0x20) /* ancillary */ - { - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == - (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN)) - need_crc = 0; - } - else /* critical */ - { - if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) - need_crc = 0; - } - - if (need_crc) - png_ptr->crc = crc32(png_ptr->crc, ptr, (uInt)length); -} - -/* Allocate the memory for an info_struct for the application. We don't - * really need the png_ptr, but it could potentially be useful in the - * future. This should be used in favour of malloc(png_sizeof(png_info)) - * and png_info_init() so that applications that want to use a shared - * libpng don't have to be recompiled if png_info changes size. - */ -png_infop PNGAPI -png_create_info_struct(png_structp png_ptr) -{ - png_infop info_ptr; - - png_debug(1, "in png_create_info_struct"); - - if (png_ptr == NULL) - return (NULL); - -#ifdef PNG_USER_MEM_SUPPORTED - info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO, - png_ptr->malloc_fn, png_ptr->mem_ptr); -#else - info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); -#endif - if (info_ptr != NULL) - png_info_init_3(&info_ptr, png_sizeof(png_info)); - - return (info_ptr); -} - -/* This function frees the memory associated with a single info struct. - * Normally, one would use either png_destroy_read_struct() or - * png_destroy_write_struct() to free an info struct, but this may be - * useful for some applications. - */ -void PNGAPI -png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr) -{ - png_infop info_ptr = NULL; - - png_debug(1, "in png_destroy_info_struct"); - - if (png_ptr == NULL) - return; - - if (info_ptr_ptr != NULL) - info_ptr = *info_ptr_ptr; - - if (info_ptr != NULL) - { - png_info_destroy(png_ptr, info_ptr); - -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn, - png_ptr->mem_ptr); -#else - png_destroy_struct((png_voidp)info_ptr); -#endif - *info_ptr_ptr = NULL; - } -} - -/* Initialize the info structure. This is now an internal function (0.89) - * and applications using it are urged to use png_create_info_struct() - * instead. - */ -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -#undef png_info_init -void PNGAPI -png_info_init(png_infop info_ptr) -{ - /* We only come here via pre-1.0.12-compiled applications */ - png_info_init_3(&info_ptr, 0); -} -#endif - -void PNGAPI -png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size) -{ - png_infop info_ptr = *ptr_ptr; - - png_debug(1, "in png_info_init_3"); - - if (info_ptr == NULL) - return; - - if (png_sizeof(png_info) > png_info_struct_size) - { - png_destroy_struct(info_ptr); - info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO); - *ptr_ptr = info_ptr; - } - - /* Set everything to 0 */ - png_memset(info_ptr, 0, png_sizeof(png_info)); -} - -#ifdef PNG_FREE_ME_SUPPORTED -void PNGAPI -png_data_freer(png_structp png_ptr, png_infop info_ptr, - int freer, png_uint_32 mask) -{ - png_debug(1, "in png_data_freer"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (freer == PNG_DESTROY_WILL_FREE_DATA) - info_ptr->free_me |= mask; - else if (freer == PNG_USER_WILL_FREE_DATA) - info_ptr->free_me &= ~mask; - else - png_warning(png_ptr, - "Unknown freer parameter in png_data_freer."); -} -#endif - -void PNGAPI -png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, - int num) -{ - png_debug(1, "in png_free_data"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - -#ifdef PNG_TEXT_SUPPORTED - /* Free text item num or (if num == -1) all text items */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_TEXT) & info_ptr->free_me) -#else - if (mask & PNG_FREE_TEXT) -#endif - { - if (num != -1) - { - if (info_ptr->text && info_ptr->text[num].key) - { - png_free(png_ptr, info_ptr->text[num].key); - info_ptr->text[num].key = NULL; - } - } - else - { - int i; - for (i = 0; i < info_ptr->num_text; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i); - png_free(png_ptr, info_ptr->text); - info_ptr->text = NULL; - info_ptr->num_text=0; - } - } -#endif - -#ifdef PNG_tRNS_SUPPORTED - /* Free any tRNS entry */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_TRNS) & info_ptr->free_me) -#else - if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS)) -#endif - { - png_free(png_ptr, info_ptr->trans); - info_ptr->trans = NULL; - info_ptr->valid &= ~PNG_INFO_tRNS; -#ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_TRNS; -#endif - } -#endif - -#ifdef PNG_sCAL_SUPPORTED - /* Free any sCAL entry */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_SCAL) & info_ptr->free_me) -#else - if (mask & PNG_FREE_SCAL) -#endif - { -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, info_ptr->scal_s_width); - png_free(png_ptr, info_ptr->scal_s_height); - info_ptr->scal_s_width = NULL; - info_ptr->scal_s_height = NULL; -#endif - info_ptr->valid &= ~PNG_INFO_sCAL; - } -#endif - -#ifdef PNG_pCAL_SUPPORTED - /* Free any pCAL entry */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_PCAL) & info_ptr->free_me) -#else - if (mask & PNG_FREE_PCAL) -#endif - { - png_free(png_ptr, info_ptr->pcal_purpose); - png_free(png_ptr, info_ptr->pcal_units); - info_ptr->pcal_purpose = NULL; - info_ptr->pcal_units = NULL; - if (info_ptr->pcal_params != NULL) - { - int i; - for (i = 0; i < (int)info_ptr->pcal_nparams; i++) - { - png_free(png_ptr, info_ptr->pcal_params[i]); - info_ptr->pcal_params[i] = NULL; - } - png_free(png_ptr, info_ptr->pcal_params); - info_ptr->pcal_params = NULL; - } - info_ptr->valid &= ~PNG_INFO_pCAL; - } -#endif - -#ifdef PNG_iCCP_SUPPORTED - /* Free any iCCP entry */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_ICCP) & info_ptr->free_me) -#else - if (mask & PNG_FREE_ICCP) -#endif - { - png_free(png_ptr, info_ptr->iccp_name); - png_free(png_ptr, info_ptr->iccp_profile); - info_ptr->iccp_name = NULL; - info_ptr->iccp_profile = NULL; - info_ptr->valid &= ~PNG_INFO_iCCP; - } -#endif - -#ifdef PNG_sPLT_SUPPORTED - /* Free a given sPLT entry, or (if num == -1) all sPLT entries */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_SPLT) & info_ptr->free_me) -#else - if (mask & PNG_FREE_SPLT) -#endif - { - if (num != -1) - { - if (info_ptr->splt_palettes) - { - png_free(png_ptr, info_ptr->splt_palettes[num].name); - png_free(png_ptr, info_ptr->splt_palettes[num].entries); - info_ptr->splt_palettes[num].name = NULL; - info_ptr->splt_palettes[num].entries = NULL; - } - } - else - { - if (info_ptr->splt_palettes_num) - { - int i; - for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i); - - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes = NULL; - info_ptr->splt_palettes_num = 0; - } - info_ptr->valid &= ~PNG_INFO_sPLT; - } - } -#endif - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED - if (png_ptr->unknown_chunk.data) - { - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - } - -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_UNKN) & info_ptr->free_me) -#else - if (mask & PNG_FREE_UNKN) -#endif - { - if (num != -1) - { - if (info_ptr->unknown_chunks) - { - png_free(png_ptr, info_ptr->unknown_chunks[num].data); - info_ptr->unknown_chunks[num].data = NULL; - } - } - else - { - int i; - - if (info_ptr->unknown_chunks_num) - { - for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++) - png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i); - - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks = NULL; - info_ptr->unknown_chunks_num = 0; - } - } - } -#endif - -#ifdef PNG_hIST_SUPPORTED - /* Free any hIST entry */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_HIST) & info_ptr->free_me) -#else - if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST)) -#endif - { - png_free(png_ptr, info_ptr->hist); - info_ptr->hist = NULL; - info_ptr->valid &= ~PNG_INFO_hIST; -#ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_HIST; -#endif - } -#endif - - /* Free any PLTE entry that was internally allocated */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_PLTE) & info_ptr->free_me) -#else - if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE)) -#endif - { - png_zfree(png_ptr, info_ptr->palette); - info_ptr->palette = NULL; - info_ptr->valid &= ~PNG_INFO_PLTE; -#ifndef PNG_FREE_ME_SUPPORTED - png_ptr->flags &= ~PNG_FLAG_FREE_PLTE; -#endif - info_ptr->num_palette = 0; - } - -#ifdef PNG_INFO_IMAGE_SUPPORTED - /* Free any image bits attached to the info structure */ -#ifdef PNG_FREE_ME_SUPPORTED - if ((mask & PNG_FREE_ROWS) & info_ptr->free_me) -#else - if (mask & PNG_FREE_ROWS) -#endif - { - if (info_ptr->row_pointers) - { - int row; - for (row = 0; row < (int)info_ptr->height; row++) - { - png_free(png_ptr, info_ptr->row_pointers[row]); - info_ptr->row_pointers[row] = NULL; - } - png_free(png_ptr, info_ptr->row_pointers); - info_ptr->row_pointers = NULL; - } - info_ptr->valid &= ~PNG_INFO_IDAT; - } -#endif - -#ifdef PNG_FREE_ME_SUPPORTED - if (num == -1) - info_ptr->free_me &= ~mask; - else - info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL); -#endif -} - -/* This is an internal routine to free any memory that the info struct is - * pointing to before re-using it or freeing the struct itself. Recall - * that png_free() checks for NULL pointers for us. - */ -void /* PRIVATE */ -png_info_destroy(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_info_destroy"); - - png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1); - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - if (png_ptr->num_chunk_list) - { - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list = NULL; - png_ptr->num_chunk_list = 0; - } -#endif - - png_info_init_3(&info_ptr, png_sizeof(png_info)); -} -#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ - -/* This function returns a pointer to the io_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy() or png_read_destroy() are called. - */ -png_voidp PNGAPI -png_get_io_ptr(png_structp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - return (png_ptr->io_ptr); -} - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -#ifdef PNG_STDIO_SUPPORTED -/* Initialize the default input/output functions for the PNG file. If you - * use your own read or write routines, you can call either png_set_read_fn() - * or png_set_write_fn() instead of png_init_io(). If you have defined - * PNG_NO_STDIO, you must use a function of your own because "FILE *" isn't - * necessarily available. - */ -void PNGAPI -png_init_io(png_structp png_ptr, png_FILE_p fp) -{ - png_debug(1, "in png_init_io"); - - if (png_ptr == NULL) - return; - - png_ptr->io_ptr = (png_voidp)fp; -} -#endif - -#ifdef PNG_TIME_RFC1123_SUPPORTED -/* Convert the supplied time into an RFC 1123 string suitable for use in - * a "Creation Time" or other text-based time string. - */ -png_charp PNGAPI -png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime) -{ - static PNG_CONST char short_months[12][4] = - {"Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - - if (png_ptr == NULL) - return (NULL); - if (png_ptr->time_buffer == NULL) - { - png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29* - png_sizeof(char))); - } - -#ifdef _WIN32_WCE - { - wchar_t time_buf[29]; - wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"), - ptime->day % 32, short_months[(ptime->month - 1) % 12], - ptime->year, ptime->hour % 24, ptime->minute % 60, - ptime->second % 61); - WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, - 29, NULL, NULL); - } -#else -#ifdef USE_FAR_KEYWORD - { - char near_time_buf[29]; - png_snprintf6(near_time_buf, 29, "%d %s %d %02d:%02d:%02d +0000", - ptime->day % 32, short_months[(ptime->month - 1) % 12], - ptime->year, ptime->hour % 24, ptime->minute % 60, - ptime->second % 61); - png_memcpy(png_ptr->time_buffer, near_time_buf, - 29*png_sizeof(char)); - } -#else - png_snprintf6(png_ptr->time_buffer, 29, "%d %s %d %02d:%02d:%02d +0000", - ptime->day % 32, short_months[(ptime->month - 1) % 12], - ptime->year, ptime->hour % 24, ptime->minute % 60, - ptime->second % 61); -#endif -#endif /* _WIN32_WCE */ - return ((png_charp)png_ptr->time_buffer); -} -#endif /* PNG_TIME_RFC1123_SUPPORTED */ - -#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ - -png_charp PNGAPI -png_get_copyright(png_structp png_ptr) -{ - png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ -#ifdef PNG_STRING_COPYRIGHT - return PNG_STRING_COPYRIGHT -#else -#ifdef __STDC__ - return ((png_charp) PNG_STRING_NEWLINE \ - "libpng version 1.2.44 - June 26, 2010" PNG_STRING_NEWLINE \ - "Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \ - "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ - "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ - PNG_STRING_NEWLINE); -#else - return ((png_charp) "libpng version 1.2.44 - June 26, 2010\ - Copyright (c) 1998-2010 Glenn Randers-Pehrson\ - Copyright (c) 1996-1997 Andreas Dilger\ - Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."); -#endif -#endif -} - -/* The following return the library version as a short string in the - * format 1.0.0 through 99.99.99zz. To get the version of *.h files - * used with your application, print out PNG_LIBPNG_VER_STRING, which - * is defined in png.h. - * Note: now there is no difference between png_get_libpng_ver() and - * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard, - * it is guaranteed that png.c uses the correct version of png.h. - */ -png_charp PNGAPI -png_get_libpng_ver(png_structp png_ptr) -{ - /* Version of *.c files used when building libpng */ - png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ - return ((png_charp) PNG_LIBPNG_VER_STRING); -} - -png_charp PNGAPI -png_get_header_ver(png_structp png_ptr) -{ - /* Version of *.h files used when building libpng */ - png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ - return ((png_charp) PNG_LIBPNG_VER_STRING); -} - -png_charp PNGAPI -png_get_header_version(png_structp png_ptr) -{ - /* Returns longer string containing both version and date */ - png_ptr = png_ptr; /* Silence compiler warning about unused png_ptr */ -#ifdef __STDC__ - return ((png_charp) PNG_HEADER_VERSION_STRING -#ifndef PNG_READ_SUPPORTED - " (NO READ SUPPORT)" -#endif - PNG_STRING_NEWLINE); -#else - return ((png_charp) PNG_HEADER_VERSION_STRING); -#endif -} - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -int PNGAPI -png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name) -{ - /* Check chunk_name and return "keep" value if it's on the list, else 0 */ - int i; - png_bytep p; - if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0) - return 0; - p = png_ptr->chunk_list + png_ptr->num_chunk_list*5 - 5; - for (i = png_ptr->num_chunk_list; i; i--, p -= 5) - if (!png_memcmp(chunk_name, p, 4)) - return ((int)*(p + 4)); - return 0; -} -#endif - -/* This function, added to libpng-1.0.6g, is untested. */ -int PNGAPI -png_reset_zstream(png_structp png_ptr) -{ - if (png_ptr == NULL) - return Z_STREAM_ERROR; - return (inflateReset(&png_ptr->zstream)); -} -#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ - -/* This function was added to libpng-1.0.7 */ -png_uint_32 PNGAPI -png_access_version_number(void) -{ - /* Version of *.c files used when building libpng */ - return((png_uint_32) PNG_LIBPNG_VER); -} - - -#if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) -#ifndef PNG_1_0_X -/* This function was added to libpng 1.2.0 */ -int PNGAPI -png_mmx_support(void) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - return -1; -} -#endif /* PNG_1_0_X */ -#endif /* PNG_READ_SUPPORTED && PNG_ASSEMBLER_CODE_SUPPORTED */ - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -#ifdef PNG_SIZE_T -/* Added at libpng version 1.2.6 */ - PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size)); -png_size_t PNGAPI -png_convert_size(size_t size) -{ - if (size > (png_size_t)-1) - PNG_ABORT(); /* We haven't got access to png_ptr, so no png_error() */ - return ((png_size_t)size); -} -#endif /* PNG_SIZE_T */ - -/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */ -#ifdef PNG_cHRM_SUPPORTED -#ifdef PNG_CHECK_cHRM_SUPPORTED - -/* - * Multiply two 32-bit numbers, V1 and V2, using 32-bit - * arithmetic, to produce a 64 bit result in the HI/LO words. - * - * A B - * x C D - * ------ - * AD || BD - * AC || CB || 0 - * - * where A and B are the high and low 16-bit words of V1, - * C and D are the 16-bit words of V2, AD is the product of - * A and D, and X || Y is (X << 16) + Y. -*/ - -void /* PRIVATE */ -png_64bit_product (long v1, long v2, unsigned long *hi_product, - unsigned long *lo_product) -{ - int a, b, c, d; - long lo, hi, x, y; - - a = (v1 >> 16) & 0xffff; - b = v1 & 0xffff; - c = (v2 >> 16) & 0xffff; - d = v2 & 0xffff; - - lo = b * d; /* BD */ - x = a * d + c * b; /* AD + CB */ - y = ((lo >> 16) & 0xffff) + x; - - lo = (lo & 0xffff) | ((y & 0xffff) << 16); - hi = (y >> 16) & 0xffff; - - hi += a * c; /* AC */ - - *hi_product = (unsigned long)hi; - *lo_product = (unsigned long)lo; -} - -int /* PRIVATE */ -png_check_cHRM_fixed(png_structp png_ptr, - png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, - png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, - png_fixed_point blue_x, png_fixed_point blue_y) -{ - int ret = 1; - unsigned long xy_hi,xy_lo,yx_hi,yx_lo; - - png_debug(1, "in function png_check_cHRM_fixed"); - - if (png_ptr == NULL) - return 0; - - if (white_x < 0 || white_y <= 0 || - red_x < 0 || red_y < 0 || - green_x < 0 || green_y < 0 || - blue_x < 0 || blue_y < 0) - { - png_warning(png_ptr, - "Ignoring attempt to set negative chromaticity value"); - ret = 0; - } - if (white_x > (png_fixed_point) PNG_UINT_31_MAX || - white_y > (png_fixed_point) PNG_UINT_31_MAX || - red_x > (png_fixed_point) PNG_UINT_31_MAX || - red_y > (png_fixed_point) PNG_UINT_31_MAX || - green_x > (png_fixed_point) PNG_UINT_31_MAX || - green_y > (png_fixed_point) PNG_UINT_31_MAX || - blue_x > (png_fixed_point) PNG_UINT_31_MAX || - blue_y > (png_fixed_point) PNG_UINT_31_MAX ) - { - png_warning(png_ptr, - "Ignoring attempt to set chromaticity value exceeding 21474.83"); - ret = 0; - } - if (white_x > 100000L - white_y) - { - png_warning(png_ptr, "Invalid cHRM white point"); - ret = 0; - } - if (red_x > 100000L - red_y) - { - png_warning(png_ptr, "Invalid cHRM red point"); - ret = 0; - } - if (green_x > 100000L - green_y) - { - png_warning(png_ptr, "Invalid cHRM green point"); - ret = 0; - } - if (blue_x > 100000L - blue_y) - { - png_warning(png_ptr, "Invalid cHRM blue point"); - ret = 0; - } - - png_64bit_product(green_x - red_x, blue_y - red_y, &xy_hi, &xy_lo); - png_64bit_product(green_y - red_y, blue_x - red_x, &yx_hi, &yx_lo); - - if (xy_hi == yx_hi && xy_lo == yx_lo) - { - png_warning(png_ptr, - "Ignoring attempt to set cHRM RGB triangle with zero area"); - ret = 0; - } - - return ret; -} -#endif /* PNG_CHECK_cHRM_SUPPORTED */ -#endif /* PNG_cHRM_SUPPORTED */ - -void /* PRIVATE */ -png_check_IHDR(png_structp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type) -{ - int error = 0; - - /* Check for width and height valid values */ - if (width == 0) - { - png_warning(png_ptr, "Image width is zero in IHDR"); - error = 1; - } - - if (height == 0) - { - png_warning(png_ptr, "Image height is zero in IHDR"); - error = 1; - } - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX) -#else - if (width > PNG_USER_WIDTH_MAX) -#endif - { - png_warning(png_ptr, "Image width exceeds user limit in IHDR"); - error = 1; - } - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX) -#else - if (height > PNG_USER_HEIGHT_MAX) -#endif - { - png_warning(png_ptr, "Image height exceeds user limit in IHDR"); - error = 1; - } - - if (width > PNG_UINT_31_MAX) - { - png_warning(png_ptr, "Invalid image width in IHDR"); - error = 1; - } - - if ( height > PNG_UINT_31_MAX) - { - png_warning(png_ptr, "Invalid image height in IHDR"); - error = 1; - } - - if ( width > (PNG_UINT_32_MAX - >> 3) /* 8-byte RGBA pixels */ - - 64 /* bigrowbuf hack */ - - 1 /* filter byte */ - - 7*8 /* rounding of width to multiple of 8 pixels */ - - 8) /* extra max_pixel_depth pad */ - png_warning(png_ptr, "Width is too large for libpng to process pixels"); - - /* Check other values */ - if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && - bit_depth != 8 && bit_depth != 16) - { - png_warning(png_ptr, "Invalid bit depth in IHDR"); - error = 1; - } - - if (color_type < 0 || color_type == 1 || - color_type == 5 || color_type > 6) - { - png_warning(png_ptr, "Invalid color type in IHDR"); - error = 1; - } - - if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || - ((color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_GRAY_ALPHA || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) - { - png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR"); - error = 1; - } - - if (interlace_type >= PNG_INTERLACE_LAST) - { - png_warning(png_ptr, "Unknown interlace method in IHDR"); - error = 1; - } - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - { - png_warning(png_ptr, "Unknown compression method in IHDR"); - error = 1; - } - -#ifdef PNG_MNG_FEATURES_SUPPORTED - /* Accept filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not read a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) && - png_ptr->mng_features_permitted) - png_warning(png_ptr, "MNG features are not allowed in a PNG datastream"); - - if (filter_type != PNG_FILTER_TYPE_BASE) - { - if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && - ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) && - (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA))) - { - png_warning(png_ptr, "Unknown filter method in IHDR"); - error = 1; - } - - if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) - { - png_warning(png_ptr, "Invalid filter method in IHDR"); - error = 1; - } - } - -#else - if (filter_type != PNG_FILTER_TYPE_BASE) - { - png_warning(png_ptr, "Unknown filter method in IHDR"); - error = 1; - } -#endif - - if (error == 1) - png_error(png_ptr, "Invalid IHDR data"); -} -#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngerror.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngerror.c deleted file mode 100644 index 7bc98fb..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngerror.c +++ /dev/null @@ -1,386 +0,0 @@ - -/* pngerror.c - stub functions for i/o and memory allocation - * - * Last changed in libpng 1.2.41 [December 3, 2009] - * Copyright (c) 1998-2009 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all error handling. Users who - * need special error handling are expected to write replacement functions - * and use png_set_error_fn() to use those functions. See the instructions - * at each function. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -static void /* PRIVATE */ -png_default_error PNGARG((png_structp png_ptr, - png_const_charp error_message)) PNG_NORETURN; -#ifdef PNG_WARNINGS_SUPPORTED -static void /* PRIVATE */ -png_default_warning PNGARG((png_structp png_ptr, - png_const_charp warning_message)); -#endif /* PNG_WARNINGS_SUPPORTED */ - -/* This function is called whenever there is a fatal error. This function - * should not be changed. If there is a need to handle errors differently, - * you should supply a replacement error function and use png_set_error_fn() - * to replace the error function at run-time. - */ -#ifdef PNG_ERROR_TEXT_SUPPORTED -void PNGAPI -png_error(png_structp png_ptr, png_const_charp error_message) -{ -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - char msg[16]; - if (png_ptr != NULL) - { - if (png_ptr->flags& - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) - { - if (*error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - for (offset = 1; offset<15; offset++) - if (error_message[offset] == ' ') - break; - if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) - { - int i; - for (i = 0; i < offset - 1; i++) - msg[i] = error_message[i + 1]; - msg[i - 1] = '\0'; - error_message = msg; - } - else - error_message += offset; - } - else - { - if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT) - { - msg[0] = '0'; - msg[1] = '\0'; - error_message = msg; - } - } - } - } -#endif - if (png_ptr != NULL && png_ptr->error_fn != NULL) - (*(png_ptr->error_fn))(png_ptr, error_message); - - /* If the custom handler doesn't exist, or if it returns, - use the default handler, which will not return. */ - png_default_error(png_ptr, error_message); -} -#else -void PNGAPI -png_err(png_structp png_ptr) -{ - if (png_ptr != NULL && png_ptr->error_fn != NULL) - (*(png_ptr->error_fn))(png_ptr, '\0'); - - /* If the custom handler doesn't exist, or if it returns, - use the default handler, which will not return. */ - png_default_error(png_ptr, '\0'); -} -#endif /* PNG_ERROR_TEXT_SUPPORTED */ - -#ifdef PNG_WARNINGS_SUPPORTED -/* This function is called whenever there is a non-fatal error. This function - * should not be changed. If there is a need to handle warnings differently, - * you should supply a replacement warning function and use - * png_set_error_fn() to replace the warning function at run-time. - */ -void PNGAPI -png_warning(png_structp png_ptr, png_const_charp warning_message) -{ - int offset = 0; - if (png_ptr != NULL) - { -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - if (png_ptr->flags& - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) -#endif - { - if (*warning_message == PNG_LITERAL_SHARP) - { - for (offset = 1; offset < 15; offset++) - if (warning_message[offset] == ' ') - break; - } - } - } - if (png_ptr != NULL && png_ptr->warning_fn != NULL) - (*(png_ptr->warning_fn))(png_ptr, warning_message + offset); - else - png_default_warning(png_ptr, warning_message + offset); -} -#endif /* PNG_WARNINGS_SUPPORTED */ - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_benign_error(png_structp png_ptr, png_const_charp error_message) -{ - if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) - png_warning(png_ptr, error_message); - else - png_error(png_ptr, error_message); -} -#endif - -/* These utilities are used internally to build an error message that relates - * to the current chunk. The chunk name comes from png_ptr->chunk_name, - * this is used to prefix the message. The message is limited in length - * to 63 bytes, the name characters are output as hex digits wrapped in [] - * if the character is invalid. - */ -#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) -static PNG_CONST char png_digit[16] = { - '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - 'A', 'B', 'C', 'D', 'E', 'F' -}; - -#define PNG_MAX_ERROR_TEXT 64 -#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED) -static void /* PRIVATE */ -png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp - error_message) -{ - int iout = 0, iin = 0; - - while (iin < 4) - { - int c = png_ptr->chunk_name[iin++]; - if (isnonalpha(c)) - { - buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET; - buffer[iout++] = png_digit[(c & 0xf0) >> 4]; - buffer[iout++] = png_digit[c & 0x0f]; - buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET; - } - else - { - buffer[iout++] = (png_byte)c; - } - } - - if (error_message == NULL) - buffer[iout] = '\0'; - else - { - buffer[iout++] = ':'; - buffer[iout++] = ' '; - png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT); - buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0'; - } -} - -#ifdef PNG_READ_SUPPORTED -void PNGAPI -png_chunk_error(png_structp png_ptr, png_const_charp error_message) -{ - char msg[18+PNG_MAX_ERROR_TEXT]; - if (png_ptr == NULL) - png_error(png_ptr, error_message); - else - { - png_format_buffer(png_ptr, msg, error_message); - png_error(png_ptr, msg); - } -} -#endif /* PNG_READ_SUPPORTED */ -#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */ - -#ifdef PNG_WARNINGS_SUPPORTED -void PNGAPI -png_chunk_warning(png_structp png_ptr, png_const_charp warning_message) -{ - char msg[18+PNG_MAX_ERROR_TEXT]; - if (png_ptr == NULL) - png_warning(png_ptr, warning_message); - else - { - png_format_buffer(png_ptr, msg, warning_message); - png_warning(png_ptr, msg); - } -} -#endif /* PNG_WARNINGS_SUPPORTED */ - -#ifdef PNG_READ_SUPPORTED -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message) -{ - if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) - png_chunk_warning(png_ptr, error_message); - else - png_chunk_error(png_ptr, error_message); -} -#endif -#endif /* PNG_READ_SUPPORTED */ - -/* This is the default error handling function. Note that replacements for - * this function MUST NOT RETURN, or the program will likely crash. This - * function is used by default, or if the program supplies NULL for the - * error function pointer in png_set_error_fn(). - */ -static void /* PRIVATE */ -png_default_error(png_structp png_ptr, png_const_charp error_message) -{ -#ifdef PNG_CONSOLE_IO_SUPPORTED -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - if (*error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - char error_number[16]; - for (offset = 0; offset<15; offset++) - { - error_number[offset] = error_message[offset + 1]; - if (error_message[offset] == ' ') - break; - } - if ((offset > 1) && (offset < 15)) - { - error_number[offset - 1] = '\0'; - fprintf(stderr, "libpng error no. %s: %s", - error_number, error_message + offset + 1); - fprintf(stderr, PNG_STRING_NEWLINE); - } - else - { - fprintf(stderr, "libpng error: %s, offset=%d", - error_message, offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -#endif - { - fprintf(stderr, "libpng error: %s", error_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } -#endif - -#ifdef PNG_SETJMP_SUPPORTED - if (png_ptr) - { -# ifdef USE_FAR_KEYWORD - { - jmp_buf jmpbuf; - png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf)); - longjmp(jmpbuf,1); - } -# else - longjmp(png_ptr->jmpbuf, 1); -# endif - } -#endif - /* Here if not setjmp support or if png_ptr is null. */ - PNG_ABORT(); -#ifndef PNG_CONSOLE_IO_SUPPORTED - error_message = error_message; /* Make compiler happy */ -#endif -} - -#ifdef PNG_WARNINGS_SUPPORTED -/* This function is called when there is a warning, but the library thinks - * it can continue anyway. Replacement functions don't have to do anything - * here if you don't want them to. In the default configuration, png_ptr is - * not used, but it is passed in case it may be useful. - */ -static void /* PRIVATE */ -png_default_warning(png_structp png_ptr, png_const_charp warning_message) -{ -#ifdef PNG_CONSOLE_IO_SUPPORTED -# ifdef PNG_ERROR_NUMBERS_SUPPORTED - if (*warning_message == PNG_LITERAL_SHARP) - { - int offset; - char warning_number[16]; - for (offset = 0; offset < 15; offset++) - { - warning_number[offset] = warning_message[offset + 1]; - if (warning_message[offset] == ' ') - break; - } - if ((offset > 1) && (offset < 15)) - { - warning_number[offset + 1] = '\0'; - fprintf(stderr, "libpng warning no. %s: %s", - warning_number, warning_message + offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - else - { - fprintf(stderr, "libpng warning: %s", - warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -# endif - { - fprintf(stderr, "libpng warning: %s", warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } -#else - warning_message = warning_message; /* Make compiler happy */ -#endif - png_ptr = png_ptr; /* Make compiler happy */ -} -#endif /* PNG_WARNINGS_SUPPORTED */ - -/* This function is called when the application wants to use another method - * of handling errors and warnings. Note that the error function MUST NOT - * return to the calling routine or serious problems will occur. The return - * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1) - */ -void PNGAPI -png_set_error_fn(png_structp png_ptr, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warning_fn) -{ - if (png_ptr == NULL) - return; - png_ptr->error_ptr = error_ptr; - png_ptr->error_fn = error_fn; - png_ptr->warning_fn = warning_fn; -} - - -/* This function returns a pointer to the error_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy and png_read_destroy are called. - */ -png_voidp PNGAPI -png_get_error_ptr(png_structp png_ptr) -{ - if (png_ptr == NULL) - return NULL; - return ((png_voidp)png_ptr->error_ptr); -} - - -#ifdef PNG_ERROR_NUMBERS_SUPPORTED -void PNGAPI -png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode) -{ - if (png_ptr != NULL) - { - png_ptr->flags &= - ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode); - } -} -#endif -#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pnggccrd.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pnggccrd.c deleted file mode 100644 index 78b8a7e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pnggccrd.c +++ /dev/null @@ -1,103 +0,0 @@ -/* pnggccrd.c was removed from libpng-1.2.20. */ - -/* This code snippet is for use by configure's compilation test. */ - -#if (!defined _MSC_VER) && \ - defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \ - defined(PNG_MMX_CODE_SUPPORTED) - -int PNGAPI png_dummy_mmx_support(void); - -static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested - -int PNGAPI -png_dummy_mmx_support(void) __attribute__((noinline)); - -int PNGAPI -png_dummy_mmx_support(void) -{ - int result; -#ifdef PNG_MMX_CODE_SUPPORTED // superfluous, but what the heck - __asm__ __volatile__ ( -#ifdef __x86_64__ - "pushq %%rbx \n\t" // rbx gets clobbered by CPUID instruction - "pushq %%rcx \n\t" // so does rcx... - "pushq %%rdx \n\t" // ...and rdx (but rcx & rdx safe on Linux) - "pushfq \n\t" // save Eflag to stack - "popq %%rax \n\t" // get Eflag from stack into rax - "movq %%rax, %%rcx \n\t" // make another copy of Eflag in rcx - "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21) - "pushq %%rax \n\t" // save modified Eflag back to stack - "popfq \n\t" // restore modified value to Eflag reg - "pushfq \n\t" // save Eflag to stack - "popq %%rax \n\t" // get Eflag from stack - "pushq %%rcx \n\t" // save original Eflag to stack - "popfq \n\t" // restore original Eflag -#else - "pushl %%ebx \n\t" // ebx gets clobbered by CPUID instruction - "pushl %%ecx \n\t" // so does ecx... - "pushl %%edx \n\t" // ...and edx (but ecx & edx safe on Linux) - "pushfl \n\t" // save Eflag to stack - "popl %%eax \n\t" // get Eflag from stack into eax - "movl %%eax, %%ecx \n\t" // make another copy of Eflag in ecx - "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21) - "pushl %%eax \n\t" // save modified Eflag back to stack - "popfl \n\t" // restore modified value to Eflag reg - "pushfl \n\t" // save Eflag to stack - "popl %%eax \n\t" // get Eflag from stack - "pushl %%ecx \n\t" // save original Eflag to stack - "popfl \n\t" // restore original Eflag -#endif - "xorl %%ecx, %%eax \n\t" // compare new Eflag with original Eflag - "jz 0f \n\t" // if same, CPUID instr. is not supported - - "xorl %%eax, %%eax \n\t" // set eax to zero -// ".byte 0x0f, 0xa2 \n\t" // CPUID instruction (two-byte opcode) - "cpuid \n\t" // get the CPU identification info - "cmpl $1, %%eax \n\t" // make sure eax return non-zero value - "jl 0f \n\t" // if eax is zero, MMX is not supported - - "xorl %%eax, %%eax \n\t" // set eax to zero and... - "incl %%eax \n\t" // ...increment eax to 1. This pair is - // faster than the instruction "mov eax, 1" - "cpuid \n\t" // get the CPU identification info again - "andl $0x800000, %%edx \n\t" // mask out all bits but MMX bit (23) - "cmpl $0, %%edx \n\t" // 0 = MMX not supported - "jz 0f \n\t" // non-zero = yes, MMX IS supported - - "movl $1, %%eax \n\t" // set return value to 1 - "jmp 1f \n\t" // DONE: have MMX support - - "0: \n\t" // .NOT_SUPPORTED: target label for jump instructions - "movl $0, %%eax \n\t" // set return value to 0 - "1: \n\t" // .RETURN: target label for jump instructions -#ifdef __x86_64__ - "popq %%rdx \n\t" // restore rdx - "popq %%rcx \n\t" // restore rcx - "popq %%rbx \n\t" // restore rbx -#else - "popl %%edx \n\t" // restore edx - "popl %%ecx \n\t" // restore ecx - "popl %%ebx \n\t" // restore ebx -#endif - -// "ret \n\t" // DONE: no MMX support - // (fall through to standard C "ret") - - : "=a" (result) // output list - - : // any variables used on input (none) - - // no clobber list -// , "%ebx", "%ecx", "%edx" // GRR: we handle these manually -// , "memory" // if write to a variable gcc thought was in a reg -// , "cc" // "condition codes" (flag bits) - ); - _mmx_supported = result; -#else - _mmx_supported = 0; -#endif /* PNG_MMX_CODE_SUPPORTED */ - - return _mmx_supported; -} -#endif diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngget.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngget.c deleted file mode 100644 index d397329..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngget.c +++ /dev/null @@ -1,944 +0,0 @@ - -/* pngget.c - retrieval of values from info struct - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -png_uint_32 PNGAPI -png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->valid & flag); - - else - return(0); -} - -png_uint_32 PNGAPI -png_get_rowbytes(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->rowbytes); - - else - return(0); -} - -#ifdef PNG_INFO_IMAGE_SUPPORTED -png_bytepp PNGAPI -png_get_rows(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->row_pointers); - - else - return(0); -} -#endif - -#ifdef PNG_EASY_ACCESS_SUPPORTED -/* Easy access to info, added in libpng-0.99 */ -png_uint_32 PNGAPI -png_get_image_width(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->width; - - return (0); -} - -png_uint_32 PNGAPI -png_get_image_height(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->height; - - return (0); -} - -png_byte PNGAPI -png_get_bit_depth(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->bit_depth; - - return (0); -} - -png_byte PNGAPI -png_get_color_type(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->color_type; - - return (0); -} - -png_byte PNGAPI -png_get_filter_type(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->filter_type; - - return (0); -} - -png_byte PNGAPI -png_get_interlace_type(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->interlace_type; - - return (0); -} - -png_byte PNGAPI -png_get_compression_type(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->compression_type; - - return (0); -} - -png_uint_32 PNGAPI -png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) -#ifdef PNG_pHYs_SUPPORTED - if (info_ptr->valid & PNG_INFO_pHYs) - { - png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter"); - - if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER) - return (0); - - else - return (info_ptr->x_pixels_per_unit); - } -#else - return (0); -#endif - return (0); -} - -png_uint_32 PNGAPI -png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) -#ifdef PNG_pHYs_SUPPORTED - if (info_ptr->valid & PNG_INFO_pHYs) - { - png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter"); - - if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER) - return (0); - - else - return (info_ptr->y_pixels_per_unit); - } -#else - return (0); -#endif - return (0); -} - -png_uint_32 PNGAPI -png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) -#ifdef PNG_pHYs_SUPPORTED - if (info_ptr->valid & PNG_INFO_pHYs) - { - png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter"); - - if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER || - info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit) - return (0); - - else - return (info_ptr->x_pixels_per_unit); - } -#else - return (0); -#endif - return (0); -} - -#ifdef PNG_FLOATING_POINT_SUPPORTED -float PNGAPI -png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr) - { - if (png_ptr != NULL && info_ptr != NULL) -#ifdef PNG_pHYs_SUPPORTED - - if (info_ptr->valid & PNG_INFO_pHYs) - { - png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio"); - - if (info_ptr->x_pixels_per_unit == 0) - return ((float)0.0); - - else - return ((float)((float)info_ptr->y_pixels_per_unit - /(float)info_ptr->x_pixels_per_unit)); - } -#else - return (0.0); -#endif - return ((float)0.0); -} -#endif - -png_int_32 PNGAPI -png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) -#ifdef PNG_oFFs_SUPPORTED - - if (info_ptr->valid & PNG_INFO_oFFs) - { - png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); - - if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER) - return (0); - - else - return (info_ptr->x_offset); - } -#else - return (0); -#endif - return (0); -} - -png_int_32 PNGAPI -png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - -#ifdef PNG_oFFs_SUPPORTED - if (info_ptr->valid & PNG_INFO_oFFs) - { - png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); - - if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER) - return (0); - - else - return (info_ptr->y_offset); - } -#else - return (0); -#endif - return (0); -} - -png_int_32 PNGAPI -png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - -#ifdef PNG_oFFs_SUPPORTED - if (info_ptr->valid & PNG_INFO_oFFs) - { - png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); - - if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL) - return (0); - - else - return (info_ptr->x_offset); - } -#else - return (0); -#endif - return (0); -} - -png_int_32 PNGAPI -png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - -#ifdef PNG_oFFs_SUPPORTED - if (info_ptr->valid & PNG_INFO_oFFs) - { - png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); - - if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL) - return (0); - - else - return (info_ptr->y_offset); - } -#else - return (0); -#endif - return (0); -} - -#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED) -png_uint_32 PNGAPI -png_get_pixels_per_inch(png_structp png_ptr, png_infop info_ptr) -{ - return ((png_uint_32)((float)png_get_pixels_per_meter(png_ptr, info_ptr) - *.0254 +.5)); -} - -png_uint_32 PNGAPI -png_get_x_pixels_per_inch(png_structp png_ptr, png_infop info_ptr) -{ - return ((png_uint_32)((float)png_get_x_pixels_per_meter(png_ptr, info_ptr) - *.0254 +.5)); -} - -png_uint_32 PNGAPI -png_get_y_pixels_per_inch(png_structp png_ptr, png_infop info_ptr) -{ - return ((png_uint_32)((float)png_get_y_pixels_per_meter(png_ptr, info_ptr) - *.0254 +.5)); -} - -float PNGAPI -png_get_x_offset_inches(png_structp png_ptr, png_infop info_ptr) -{ - return ((float)png_get_x_offset_microns(png_ptr, info_ptr) - *.00003937); -} - -float PNGAPI -png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr) -{ - return ((float)png_get_y_offset_microns(png_ptr, info_ptr) - *.00003937); -} - -#ifdef PNG_pHYs_SUPPORTED -png_uint_32 PNGAPI -png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr, - png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) -{ - png_uint_32 retval = 0; - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) - { - png_debug1(1, "in %s retrieval function", "pHYs"); - - if (res_x != NULL) - { - *res_x = info_ptr->x_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - if (res_y != NULL) - { - *res_y = info_ptr->y_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - if (unit_type != NULL) - { - *unit_type = (int)info_ptr->phys_unit_type; - retval |= PNG_INFO_pHYs; - if (*unit_type == 1) - { - if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50); - if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50); - } - } - } - return (retval); -} -#endif /* PNG_pHYs_SUPPORTED */ -#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */ - -/* png_get_channels really belongs in here, too, but it's been around longer */ - -#endif /* PNG_EASY_ACCESS_SUPPORTED */ - -png_byte PNGAPI -png_get_channels(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->channels); - else - return (0); -} - -png_bytep PNGAPI -png_get_signature(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->signature); - else - return (NULL); -} - -#ifdef PNG_bKGD_SUPPORTED -png_uint_32 PNGAPI -png_get_bKGD(png_structp png_ptr, png_infop info_ptr, - png_color_16p *background) -{ - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) - && background != NULL) - { - png_debug1(1, "in %s retrieval function", "bKGD"); - - *background = &(info_ptr->background); - return (PNG_INFO_bKGD); - } - return (0); -} -#endif - -#ifdef PNG_cHRM_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_cHRM(png_structp png_ptr, png_infop info_ptr, - double *white_x, double *white_y, double *red_x, double *red_y, - double *green_x, double *green_y, double *blue_x, double *blue_y) -{ - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) - { - png_debug1(1, "in %s retrieval function", "cHRM"); - - if (white_x != NULL) - *white_x = (double)info_ptr->x_white; - if (white_y != NULL) - *white_y = (double)info_ptr->y_white; - if (red_x != NULL) - *red_x = (double)info_ptr->x_red; - if (red_y != NULL) - *red_y = (double)info_ptr->y_red; - if (green_x != NULL) - *green_x = (double)info_ptr->x_green; - if (green_y != NULL) - *green_y = (double)info_ptr->y_green; - if (blue_x != NULL) - *blue_x = (double)info_ptr->x_blue; - if (blue_y != NULL) - *blue_y = (double)info_ptr->y_blue; - return (PNG_INFO_cHRM); - } - return (0); -} -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, - png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x, - png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y, - png_fixed_point *blue_x, png_fixed_point *blue_y) -{ - png_debug1(1, "in %s retrieval function", "cHRM"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) - { - if (white_x != NULL) - *white_x = info_ptr->int_x_white; - if (white_y != NULL) - *white_y = info_ptr->int_y_white; - if (red_x != NULL) - *red_x = info_ptr->int_x_red; - if (red_y != NULL) - *red_y = info_ptr->int_y_red; - if (green_x != NULL) - *green_x = info_ptr->int_x_green; - if (green_y != NULL) - *green_y = info_ptr->int_y_green; - if (blue_x != NULL) - *blue_x = info_ptr->int_x_blue; - if (blue_y != NULL) - *blue_y = info_ptr->int_y_blue; - return (PNG_INFO_cHRM); - } - return (0); -} -#endif -#endif - -#ifdef PNG_gAMA_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma) -{ - png_debug1(1, "in %s retrieval function", "gAMA"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) - && file_gamma != NULL) - { - *file_gamma = (double)info_ptr->gamma; - return (PNG_INFO_gAMA); - } - return (0); -} -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, - png_fixed_point *int_file_gamma) -{ - png_debug1(1, "in %s retrieval function", "gAMA"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) - && int_file_gamma != NULL) - { - *int_file_gamma = info_ptr->int_gamma; - return (PNG_INFO_gAMA); - } - return (0); -} -#endif -#endif - -#ifdef PNG_sRGB_SUPPORTED -png_uint_32 PNGAPI -png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent) -{ - png_debug1(1, "in %s retrieval function", "sRGB"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB) - && file_srgb_intent != NULL) - { - *file_srgb_intent = (int)info_ptr->srgb_intent; - return (PNG_INFO_sRGB); - } - return (0); -} -#endif - -#ifdef PNG_iCCP_SUPPORTED -png_uint_32 PNGAPI -png_get_iCCP(png_structp png_ptr, png_infop info_ptr, - png_charpp name, int *compression_type, - png_charpp profile, png_uint_32 *proflen) -{ - png_debug1(1, "in %s retrieval function", "iCCP"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP) - && name != NULL && profile != NULL && proflen != NULL) - { - *name = info_ptr->iccp_name; - *profile = info_ptr->iccp_profile; - /* Compression_type is a dummy so the API won't have to change - * if we introduce multiple compression types later. - */ - *proflen = (int)info_ptr->iccp_proflen; - *compression_type = (int)info_ptr->iccp_compression; - return (PNG_INFO_iCCP); - } - return (0); -} -#endif - -#ifdef PNG_sPLT_SUPPORTED -png_uint_32 PNGAPI -png_get_sPLT(png_structp png_ptr, png_infop info_ptr, - png_sPLT_tpp spalettes) -{ - if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL) - { - *spalettes = info_ptr->splt_palettes; - return ((png_uint_32)info_ptr->splt_palettes_num); - } - return (0); -} -#endif - -#ifdef PNG_hIST_SUPPORTED -png_uint_32 PNGAPI -png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist) -{ - png_debug1(1, "in %s retrieval function", "hIST"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) - && hist != NULL) - { - *hist = info_ptr->hist; - return (PNG_INFO_hIST); - } - return (0); -} -#endif - -png_uint_32 PNGAPI -png_get_IHDR(png_structp png_ptr, png_infop info_ptr, - png_uint_32 *width, png_uint_32 *height, int *bit_depth, - int *color_type, int *interlace_type, int *compression_type, - int *filter_type) - -{ - png_debug1(1, "in %s retrieval function", "IHDR"); - - if (png_ptr == NULL || info_ptr == NULL || width == NULL || - height == NULL || bit_depth == NULL || color_type == NULL) - return (0); - - *width = info_ptr->width; - *height = info_ptr->height; - *bit_depth = info_ptr->bit_depth; - *color_type = info_ptr->color_type; - - if (compression_type != NULL) - *compression_type = info_ptr->compression_type; - - if (filter_type != NULL) - *filter_type = info_ptr->filter_type; - - if (interlace_type != NULL) - *interlace_type = info_ptr->interlace_type; - - /* This is redundant if we can be sure that the info_ptr values were all - * assigned in png_set_IHDR(). We do the check anyhow in case an - * application has ignored our advice not to mess with the members - * of info_ptr directly. - */ - png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, - info_ptr->compression_type, info_ptr->filter_type); - - return (1); -} - -#ifdef PNG_oFFs_SUPPORTED -png_uint_32 PNGAPI -png_get_oFFs(png_structp png_ptr, png_infop info_ptr, - png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type) -{ - png_debug1(1, "in %s retrieval function", "oFFs"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs) - && offset_x != NULL && offset_y != NULL && unit_type != NULL) - { - *offset_x = info_ptr->x_offset; - *offset_y = info_ptr->y_offset; - *unit_type = (int)info_ptr->offset_unit_type; - return (PNG_INFO_oFFs); - } - return (0); -} -#endif - -#ifdef PNG_pCAL_SUPPORTED -png_uint_32 PNGAPI -png_get_pCAL(png_structp png_ptr, png_infop info_ptr, - png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, - png_charp *units, png_charpp *params) -{ - png_debug1(1, "in %s retrieval function", "pCAL"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL) - && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL && - nparams != NULL && units != NULL && params != NULL) - { - *purpose = info_ptr->pcal_purpose; - *X0 = info_ptr->pcal_X0; - *X1 = info_ptr->pcal_X1; - *type = (int)info_ptr->pcal_type; - *nparams = (int)info_ptr->pcal_nparams; - *units = info_ptr->pcal_units; - *params = info_ptr->pcal_params; - return (PNG_INFO_pCAL); - } - return (0); -} -#endif - -#ifdef PNG_sCAL_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_sCAL(png_structp png_ptr, png_infop info_ptr, - int *unit, double *width, double *height) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL)) - { - *unit = info_ptr->scal_unit; - *width = info_ptr->scal_pixel_width; - *height = info_ptr->scal_pixel_height; - return (PNG_INFO_sCAL); - } - return(0); -} -#else -#ifdef PNG_FIXED_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr, - int *unit, png_charpp width, png_charpp height) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL)) - { - *unit = info_ptr->scal_unit; - *width = info_ptr->scal_s_width; - *height = info_ptr->scal_s_height; - return (PNG_INFO_sCAL); - } - return(0); -} -#endif -#endif -#endif - -#ifdef PNG_pHYs_SUPPORTED -png_uint_32 PNGAPI -png_get_pHYs(png_structp png_ptr, png_infop info_ptr, - png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) -{ - png_uint_32 retval = 0; - - png_debug1(1, "in %s retrieval function", "pHYs"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs)) - { - if (res_x != NULL) - { - *res_x = info_ptr->x_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (res_y != NULL) - { - *res_y = info_ptr->y_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (unit_type != NULL) - { - *unit_type = (int)info_ptr->phys_unit_type; - retval |= PNG_INFO_pHYs; - } - } - return (retval); -} -#endif - -png_uint_32 PNGAPI -png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette, - int *num_palette) -{ - png_debug1(1, "in %s retrieval function", "PLTE"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE) - && palette != NULL) - { - *palette = info_ptr->palette; - *num_palette = info_ptr->num_palette; - png_debug1(3, "num_palette = %d", *num_palette); - return (PNG_INFO_PLTE); - } - return (0); -} - -#ifdef PNG_sBIT_SUPPORTED -png_uint_32 PNGAPI -png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit) -{ - png_debug1(1, "in %s retrieval function", "sBIT"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT) - && sig_bit != NULL) - { - *sig_bit = &(info_ptr->sig_bit); - return (PNG_INFO_sBIT); - } - return (0); -} -#endif - -#ifdef PNG_TEXT_SUPPORTED -png_uint_32 PNGAPI -png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, - int *num_text) -{ - if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0) - { - png_debug1(1, "in %s retrieval function", - (png_ptr->chunk_name[0] == '\0' ? "text" - : (png_const_charp)png_ptr->chunk_name)); - - if (text_ptr != NULL) - *text_ptr = info_ptr->text; - - if (num_text != NULL) - *num_text = info_ptr->num_text; - - return ((png_uint_32)info_ptr->num_text); - } - if (num_text != NULL) - *num_text = 0; - return(0); -} -#endif - -#ifdef PNG_tIME_SUPPORTED -png_uint_32 PNGAPI -png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time) -{ - png_debug1(1, "in %s retrieval function", "tIME"); - - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME) - && mod_time != NULL) - { - *mod_time = &(info_ptr->mod_time); - return (PNG_INFO_tIME); - } - return (0); -} -#endif - -#ifdef PNG_tRNS_SUPPORTED -png_uint_32 PNGAPI -png_get_tRNS(png_structp png_ptr, png_infop info_ptr, - png_bytep *trans, int *num_trans, png_color_16p *trans_values) -{ - png_uint_32 retval = 0; - if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS)) - { - png_debug1(1, "in %s retrieval function", "tRNS"); - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (trans != NULL) - { - *trans = info_ptr->trans; - retval |= PNG_INFO_tRNS; - } - - if (trans_values != NULL) - *trans_values = &(info_ptr->trans_values); - } - else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */ - { - if (trans_values != NULL) - { - *trans_values = &(info_ptr->trans_values); - retval |= PNG_INFO_tRNS; - } - - if (trans != NULL) - *trans = NULL; - } - if (num_trans != NULL) - { - *num_trans = info_ptr->num_trans; - retval |= PNG_INFO_tRNS; - } - } - return (retval); -} -#endif - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED -png_uint_32 PNGAPI -png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr, - png_unknown_chunkpp unknowns) -{ - if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL) - { - *unknowns = info_ptr->unknown_chunks; - return ((png_uint_32)info_ptr->unknown_chunks_num); - } - return (0); -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -png_byte PNGAPI -png_get_rgb_to_gray_status (png_structp png_ptr) -{ - return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0); -} -#endif - -#ifdef PNG_USER_CHUNKS_SUPPORTED -png_voidp PNGAPI -png_get_user_chunk_ptr(png_structp png_ptr) -{ - return (png_ptr? png_ptr->user_chunk_ptr : NULL); -} -#endif - -png_uint_32 PNGAPI -png_get_compression_buffer_size(png_structp png_ptr) -{ - return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L); -} - -#ifdef PNG_ASSEMBLER_CODE_SUPPORTED -#ifndef PNG_1_0_X -/* This function was added to libpng 1.2.0 and should exist by default */ -png_uint_32 PNGAPI -png_get_asm_flags (png_structp png_ptr) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0L: 0L); -} - -/* This function was added to libpng 1.2.0 and should exist by default */ -png_uint_32 PNGAPI -png_get_asm_flagmask (int flag_select) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - flag_select=flag_select; - return 0L; -} - - /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */ -/* This function was added to libpng 1.2.0 */ -png_uint_32 PNGAPI -png_get_mmx_flagmask (int flag_select, int *compilerID) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - flag_select=flag_select; - *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */ - return 0L; -} - -/* This function was added to libpng 1.2.0 */ -png_byte PNGAPI -png_get_mmx_bitdepth_threshold (png_structp png_ptr) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0: 0); -} - -/* This function was added to libpng 1.2.0 */ -png_uint_32 PNGAPI -png_get_mmx_rowbytes_threshold (png_structp png_ptr) -{ - /* Obsolete, to be removed from libpng-1.4.0 */ - return (png_ptr? 0L: 0L); -} -#endif /* ?PNG_1_0_X */ -#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* These functions were added to libpng 1.2.6 but not enabled -* by default. They will be enabled in libpng-1.4.0 */ -png_uint_32 PNGAPI -png_get_user_width_max (png_structp png_ptr) -{ - return (png_ptr? png_ptr->user_width_max : 0); -} -png_uint_32 PNGAPI -png_get_user_height_max (png_structp png_ptr) -{ - return (png_ptr? png_ptr->user_height_max : 0); -} -#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ - -#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngmem.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngmem.c deleted file mode 100644 index 91f2765..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngmem.c +++ /dev/null @@ -1,641 +0,0 @@ - -/* pngmem.c - stub functions for memory allocation - * - * Last changed in libpng 1.2.41 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all memory allocation. Users who - * need special memory handling are expected to supply replacement - * functions for png_malloc() and png_free(), and to use - * png_create_read_struct_2() and png_create_write_struct_2() to - * identify the replacement functions. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -/* Borland DOS special memory handler */ -#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) -/* If you change this, be sure to change the one in png.h also */ - -/* Allocate memory for a png_struct. The malloc and memset can be replaced - by a single call to calloc() if this is thought to improve performance. */ -png_voidp /* PRIVATE */ -png_create_struct(int type) -{ -#ifdef PNG_USER_MEM_SUPPORTED - return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL)); -} - -/* Alternate version of png_create_struct, for use with user-defined malloc. */ -png_voidp /* PRIVATE */ -png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ - png_size_t size; - png_voidp struct_ptr; - - if (type == PNG_STRUCT_INFO) - size = png_sizeof(png_info); - else if (type == PNG_STRUCT_PNG) - size = png_sizeof(png_struct); - else - return (png_get_copyright(NULL)); - -#ifdef PNG_USER_MEM_SUPPORTED - if (malloc_fn != NULL) - { - png_struct dummy_struct; - png_structp png_ptr = &dummy_struct; - png_ptr->mem_ptr=mem_ptr; - struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size); - } - else -#endif /* PNG_USER_MEM_SUPPORTED */ - struct_ptr = (png_voidp)farmalloc(size); - if (struct_ptr != NULL) - png_memset(struct_ptr, 0, size); - return (struct_ptr); -} - -/* Free memory allocated by a png_create_struct() call */ -void /* PRIVATE */ -png_destroy_struct(png_voidp struct_ptr) -{ -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL); -} - -/* Free memory allocated by a png_create_struct() call */ -void /* PRIVATE */ -png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn, - png_voidp mem_ptr) -{ -#endif - if (struct_ptr != NULL) - { -#ifdef PNG_USER_MEM_SUPPORTED - if (free_fn != NULL) - { - png_struct dummy_struct; - png_structp png_ptr = &dummy_struct; - png_ptr->mem_ptr=mem_ptr; - (*(free_fn))(png_ptr, struct_ptr); - return; - } -#endif /* PNG_USER_MEM_SUPPORTED */ - farfree (struct_ptr); - } -} - -/* Allocate memory. For reasonable files, size should never exceed - * 64K. However, zlib may allocate more then 64K if you don't tell - * it not to. See zconf.h and png.h for more information. zlib does - * need to allocate exactly 64K, so whatever you call here must - * have the ability to do that. - * - * Borland seems to have a problem in DOS mode for exactly 64K. - * It gives you a segment with an offset of 8 (perhaps to store its - * memory stuff). zlib doesn't like this at all, so we have to - * detect and deal with it. This code should not be needed in - * Windows or OS/2 modes, and only in 16 bit mode. This code has - * been updated by Alexander Lehmann for version 0.89 to waste less - * memory. - * - * Note that we can't use png_size_t for the "size" declaration, - * since on some systems a png_size_t is a 16-bit quantity, and as a - * result, we would be truncating potentially larger memory requests - * (which should cause a fatal error) and introducing major problems. - */ -png_voidp /* PRIVATE */ -png_calloc(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; - - ret = (png_malloc(png_ptr, size)); - if (ret != NULL) - png_memset(ret,0,(png_size_t)size); - return (ret); -} - -png_voidp PNGAPI -png_malloc(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; - - if (png_ptr == NULL || size == 0) - return (NULL); - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr->malloc_fn != NULL) - ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); - else - ret = (png_malloc_default(png_ptr, size)); - if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out of memory!"); - return (ret); -} - -png_voidp PNGAPI -png_malloc_default(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; -#endif /* PNG_USER_MEM_SUPPORTED */ - - if (png_ptr == NULL || size == 0) - return (NULL); - -#ifdef PNG_MAX_MALLOC_64K - if (size > (png_uint_32)65536L) - { - png_warning(png_ptr, "Cannot Allocate > 64K"); - ret = NULL; - } - else -#endif - - if (size != (size_t)size) - ret = NULL; - else if (size == (png_uint_32)65536L) - { - if (png_ptr->offset_table == NULL) - { - /* Try to see if we need to do any of this fancy stuff */ - ret = farmalloc(size); - if (ret == NULL || ((png_size_t)ret & 0xffff)) - { - int num_blocks; - png_uint_32 total_size; - png_bytep table; - int i; - png_byte huge * hptr; - - if (ret != NULL) - { - farfree(ret); - ret = NULL; - } - - if (png_ptr->zlib_window_bits > 14) - num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14)); - else - num_blocks = 1; - if (png_ptr->zlib_mem_level >= 7) - num_blocks += (int)(1 << (png_ptr->zlib_mem_level - 7)); - else - num_blocks++; - - total_size = ((png_uint_32)65536L) * (png_uint_32)num_blocks+16; - - table = farmalloc(total_size); - - if (table == NULL) - { -#ifndef PNG_USER_MEM_SUPPORTED - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out Of Memory."); /* Note "O", "M" */ - else - png_warning(png_ptr, "Out Of Memory."); -#endif - return (NULL); - } - - if ((png_size_t)table & 0xfff0) - { -#ifndef PNG_USER_MEM_SUPPORTED - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, - "Farmalloc didn't return normalized pointer"); - else - png_warning(png_ptr, - "Farmalloc didn't return normalized pointer"); -#endif - return (NULL); - } - - png_ptr->offset_table = table; - png_ptr->offset_table_ptr = farmalloc(num_blocks * - png_sizeof(png_bytep)); - - if (png_ptr->offset_table_ptr == NULL) - { -#ifndef PNG_USER_MEM_SUPPORTED - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out Of memory."); /* Note "O", "m" */ - else - png_warning(png_ptr, "Out Of memory."); -#endif - return (NULL); - } - - hptr = (png_byte huge *)table; - if ((png_size_t)hptr & 0xf) - { - hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L); - hptr = hptr + 16L; /* "hptr += 16L" fails on Turbo C++ 3.0 */ - } - for (i = 0; i < num_blocks; i++) - { - png_ptr->offset_table_ptr[i] = (png_bytep)hptr; - hptr = hptr + (png_uint_32)65536L; /* "+=" fails on TC++3.0 */ - } - - png_ptr->offset_table_number = num_blocks; - png_ptr->offset_table_count = 0; - png_ptr->offset_table_count_free = 0; - } - } - - if (png_ptr->offset_table_count >= png_ptr->offset_table_number) - { -#ifndef PNG_USER_MEM_SUPPORTED - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out of Memory."); /* Note "o" and "M" */ - else - png_warning(png_ptr, "Out of Memory."); -#endif - return (NULL); - } - - ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++]; - } - else - ret = farmalloc(size); - -#ifndef PNG_USER_MEM_SUPPORTED - if (ret == NULL) - { - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */ - else - png_warning(png_ptr, "Out of memory."); /* Note "o" and "m" */ - } -#endif - - return (ret); -} - -/* Free a pointer allocated by png_malloc(). In the default - * configuration, png_ptr is not used, but is passed in case it - * is needed. If ptr is NULL, return without taking any action. - */ -void PNGAPI -png_free(png_structp png_ptr, png_voidp ptr) -{ - if (png_ptr == NULL || ptr == NULL) - return; - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr->free_fn != NULL) - { - (*(png_ptr->free_fn))(png_ptr, ptr); - return; - } - else - png_free_default(png_ptr, ptr); -} - -void PNGAPI -png_free_default(png_structp png_ptr, png_voidp ptr) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ - - if (png_ptr == NULL || ptr == NULL) - return; - - if (png_ptr->offset_table != NULL) - { - int i; - - for (i = 0; i < png_ptr->offset_table_count; i++) - { - if (ptr == png_ptr->offset_table_ptr[i]) - { - ptr = NULL; - png_ptr->offset_table_count_free++; - break; - } - } - if (png_ptr->offset_table_count_free == png_ptr->offset_table_count) - { - farfree(png_ptr->offset_table); - farfree(png_ptr->offset_table_ptr); - png_ptr->offset_table = NULL; - png_ptr->offset_table_ptr = NULL; - } - } - - if (ptr != NULL) - { - farfree(ptr); - } -} - -#else /* Not the Borland DOS special memory handler */ - -/* Allocate memory for a png_struct or a png_info. The malloc and - memset can be replaced by a single call to calloc() if this is thought - to improve performance noticably. */ -png_voidp /* PRIVATE */ -png_create_struct(int type) -{ -#ifdef PNG_USER_MEM_SUPPORTED - return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL)); -} - -/* Allocate memory for a png_struct or a png_info. The malloc and - memset can be replaced by a single call to calloc() if this is thought - to improve performance noticably. */ -png_voidp /* PRIVATE */ -png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ - png_size_t size; - png_voidp struct_ptr; - - if (type == PNG_STRUCT_INFO) - size = png_sizeof(png_info); - else if (type == PNG_STRUCT_PNG) - size = png_sizeof(png_struct); - else - return (NULL); - -#ifdef PNG_USER_MEM_SUPPORTED - if (malloc_fn != NULL) - { - png_struct dummy_struct; - png_structp png_ptr = &dummy_struct; - png_ptr->mem_ptr=mem_ptr; - struct_ptr = (*(malloc_fn))(png_ptr, size); - if (struct_ptr != NULL) - png_memset(struct_ptr, 0, size); - return (struct_ptr); - } -#endif /* PNG_USER_MEM_SUPPORTED */ - -#if defined(__TURBOC__) && !defined(__FLAT__) - struct_ptr = (png_voidp)farmalloc(size); -#else -# if defined(_MSC_VER) && defined(MAXSEG_64K) - struct_ptr = (png_voidp)halloc(size, 1); -# else - struct_ptr = (png_voidp)malloc(size); -# endif -#endif - if (struct_ptr != NULL) - png_memset(struct_ptr, 0, size); - - return (struct_ptr); -} - - -/* Free memory allocated by a png_create_struct() call */ -void /* PRIVATE */ -png_destroy_struct(png_voidp struct_ptr) -{ -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL); -} - -/* Free memory allocated by a png_create_struct() call */ -void /* PRIVATE */ -png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn, - png_voidp mem_ptr) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ - if (struct_ptr != NULL) - { -#ifdef PNG_USER_MEM_SUPPORTED - if (free_fn != NULL) - { - png_struct dummy_struct; - png_structp png_ptr = &dummy_struct; - png_ptr->mem_ptr=mem_ptr; - (*(free_fn))(png_ptr, struct_ptr); - return; - } -#endif /* PNG_USER_MEM_SUPPORTED */ -#if defined(__TURBOC__) && !defined(__FLAT__) - farfree(struct_ptr); -#else -# if defined(_MSC_VER) && defined(MAXSEG_64K) - hfree(struct_ptr); -# else - free(struct_ptr); -# endif -#endif - } -} - -/* Allocate memory. For reasonable files, size should never exceed - * 64K. However, zlib may allocate more then 64K if you don't tell - * it not to. See zconf.h and png.h for more information. zlib does - * need to allocate exactly 64K, so whatever you call here must - * have the ability to do that. - */ - -png_voidp PNGAPI -png_calloc(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; - - ret = (png_malloc(png_ptr, size)); - if (ret != NULL) - png_memset(ret,0,(png_size_t)size); - return (ret); -} - -png_voidp PNGAPI -png_malloc(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr == NULL || size == 0) - return (NULL); - - if (png_ptr->malloc_fn != NULL) - ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size)); - else - ret = (png_malloc_default(png_ptr, size)); - if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out of Memory!"); - return (ret); -} - -png_voidp PNGAPI -png_malloc_default(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ret; -#endif /* PNG_USER_MEM_SUPPORTED */ - - if (png_ptr == NULL || size == 0) - return (NULL); - -#ifdef PNG_MAX_MALLOC_64K - if (size > (png_uint_32)65536L) - { -#ifndef PNG_USER_MEM_SUPPORTED - if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Cannot Allocate > 64K"); - else -#endif - return NULL; - } -#endif - - /* Check for overflow */ -#if defined(__TURBOC__) && !defined(__FLAT__) - if (size != (unsigned long)size) - ret = NULL; - else - ret = farmalloc(size); -#else -# if defined(_MSC_VER) && defined(MAXSEG_64K) - if (size != (unsigned long)size) - ret = NULL; - else - ret = halloc(size, 1); -# else - if (size != (size_t)size) - ret = NULL; - else - ret = malloc((size_t)size); -# endif -#endif - -#ifndef PNG_USER_MEM_SUPPORTED - if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0) - png_error(png_ptr, "Out of Memory"); -#endif - - return (ret); -} - -/* Free a pointer allocated by png_malloc(). If ptr is NULL, return - * without taking any action. - */ -void PNGAPI -png_free(png_structp png_ptr, png_voidp ptr) -{ - if (png_ptr == NULL || ptr == NULL) - return; - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr->free_fn != NULL) - { - (*(png_ptr->free_fn))(png_ptr, ptr); - return; - } - else - png_free_default(png_ptr, ptr); -} -void PNGAPI -png_free_default(png_structp png_ptr, png_voidp ptr) -{ - if (png_ptr == NULL || ptr == NULL) - return; - -#endif /* PNG_USER_MEM_SUPPORTED */ - -#if defined(__TURBOC__) && !defined(__FLAT__) - farfree(ptr); -#else -# if defined(_MSC_VER) && defined(MAXSEG_64K) - hfree(ptr); -# else - free(ptr); -# endif -#endif -} - -#endif /* Not Borland DOS special memory handler */ - -#ifdef PNG_1_0_X -# define png_malloc_warn png_malloc -#else -/* This function was added at libpng version 1.2.3. The png_malloc_warn() - * function will set up png_malloc() to issue a png_warning and return NULL - * instead of issuing a png_error, if it fails to allocate the requested - * memory. - */ -png_voidp PNGAPI -png_malloc_warn(png_structp png_ptr, png_uint_32 size) -{ - png_voidp ptr; - png_uint_32 save_flags; - if (png_ptr == NULL) - return (NULL); - - save_flags = png_ptr->flags; - png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK; - ptr = (png_voidp)png_malloc((png_structp)png_ptr, size); - png_ptr->flags=save_flags; - return(ptr); -} -#endif - -png_voidp PNGAPI -png_memcpy_check (png_structp png_ptr, png_voidp s1, png_voidp s2, - png_uint_32 length) -{ - png_size_t size; - - size = (png_size_t)length; - if ((png_uint_32)size != length) - png_error(png_ptr, "Overflow in png_memcpy_check."); - - return(png_memcpy (s1, s2, size)); -} - -png_voidp PNGAPI -png_memset_check (png_structp png_ptr, png_voidp s1, int value, - png_uint_32 length) -{ - png_size_t size; - - size = (png_size_t)length; - if ((png_uint_32)size != length) - png_error(png_ptr, "Overflow in png_memset_check."); - - return (png_memset (s1, value, size)); - -} - -#ifdef PNG_USER_MEM_SUPPORTED -/* This function is called when the application wants to use another method - * of allocating and freeing memory. - */ -void PNGAPI -png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr - malloc_fn, png_free_ptr free_fn) -{ - if (png_ptr != NULL) - { - png_ptr->mem_ptr = mem_ptr; - png_ptr->malloc_fn = malloc_fn; - png_ptr->free_fn = free_fn; - } -} - -/* This function returns a pointer to the mem_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy and png_read_destroy are called. - */ -png_voidp PNGAPI -png_get_mem_ptr(png_structp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - return ((png_voidp)png_ptr->mem_ptr); -} -#endif /* PNG_USER_MEM_SUPPORTED */ -#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngpread.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngpread.c deleted file mode 100644 index d066944..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngpread.c +++ /dev/null @@ -1,1774 +0,0 @@ - -/* pngpread.c - read a png file in push mode - * - * Last changed in libpng 1.2.44 [June 26, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED - -/* Push model modes */ -#define PNG_READ_SIG_MODE 0 -#define PNG_READ_CHUNK_MODE 1 -#define PNG_READ_IDAT_MODE 2 -#define PNG_SKIP_MODE 3 -#define PNG_READ_tEXt_MODE 4 -#define PNG_READ_zTXt_MODE 5 -#define PNG_READ_DONE_MODE 6 -#define PNG_READ_iTXt_MODE 7 -#define PNG_ERROR_MODE 8 - -void PNGAPI -png_process_data(png_structp png_ptr, png_infop info_ptr, - png_bytep buffer, png_size_t buffer_size) -{ - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_push_restore_buffer(png_ptr, buffer, buffer_size); - - while (png_ptr->buffer_size) - { - png_process_some_data(png_ptr, info_ptr); - } -} - -/* What we do with the incoming data depends on what we were previously - * doing before we ran out of data... - */ -void /* PRIVATE */ -png_process_some_data(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr == NULL) - return; - - switch (png_ptr->process_mode) - { - case PNG_READ_SIG_MODE: - { - png_push_read_sig(png_ptr, info_ptr); - break; - } - - case PNG_READ_CHUNK_MODE: - { - png_push_read_chunk(png_ptr, info_ptr); - break; - } - - case PNG_READ_IDAT_MODE: - { - png_push_read_IDAT(png_ptr); - break; - } - -#ifdef PNG_READ_tEXt_SUPPORTED - case PNG_READ_tEXt_MODE: - { - png_push_read_tEXt(png_ptr, info_ptr); - break; - } - -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - case PNG_READ_zTXt_MODE: - { - png_push_read_zTXt(png_ptr, info_ptr); - break; - } - -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - case PNG_READ_iTXt_MODE: - { - png_push_read_iTXt(png_ptr, info_ptr); - break; - } - -#endif - case PNG_SKIP_MODE: - { - png_push_crc_finish(png_ptr); - break; - } - - default: - { - png_ptr->buffer_size = 0; - break; - } - } -} - -/* Read any remaining signature bytes from the stream and compare them with - * the correct PNG signature. It is possible that this routine is called - * with bytes already read from the signature, either because they have been - * checked by the calling application, or because of multiple calls to this - * routine. - */ -void /* PRIVATE */ -png_push_read_sig(png_structp png_ptr, png_infop info_ptr) -{ - png_size_t num_checked = png_ptr->sig_bytes, - num_to_check = 8 - num_checked; - - if (png_ptr->buffer_size < num_to_check) - { - num_to_check = png_ptr->buffer_size; - } - - png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]), - num_to_check); - png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check); - - if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check)) - { - if (num_checked < 4 && - png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4)) - png_error(png_ptr, "Not a PNG file"); - else - png_error(png_ptr, "PNG file corrupted by ASCII conversion"); - } - else - { - if (png_ptr->sig_bytes >= 8) - { - png_ptr->process_mode = PNG_READ_CHUNK_MODE; - } - } -} - -void /* PRIVATE */ -png_push_read_chunk(png_structp png_ptr, png_infop info_ptr) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IHDR; - PNG_CONST PNG_IDAT; - PNG_CONST PNG_IEND; - PNG_CONST PNG_PLTE; -#ifdef PNG_READ_bKGD_SUPPORTED - PNG_CONST PNG_bKGD; -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - PNG_CONST PNG_cHRM; -#endif -#ifdef PNG_READ_gAMA_SUPPORTED - PNG_CONST PNG_gAMA; -#endif -#ifdef PNG_READ_hIST_SUPPORTED - PNG_CONST PNG_hIST; -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - PNG_CONST PNG_iCCP; -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - PNG_CONST PNG_iTXt; -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - PNG_CONST PNG_oFFs; -#endif -#ifdef PNG_READ_pCAL_SUPPORTED - PNG_CONST PNG_pCAL; -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - PNG_CONST PNG_pHYs; -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - PNG_CONST PNG_sBIT; -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - PNG_CONST PNG_sCAL; -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - PNG_CONST PNG_sRGB; -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - PNG_CONST PNG_sPLT; -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - PNG_CONST PNG_tEXt; -#endif -#ifdef PNG_READ_tIME_SUPPORTED - PNG_CONST PNG_tIME; -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - PNG_CONST PNG_tRNS; -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - PNG_CONST PNG_zTXt; -#endif -#endif /* PNG_USE_LOCAL_ARRAYS */ - - /* First we make sure we have enough data for the 4 byte chunk name - * and the 4 byte chunk length before proceeding with decoding the - * chunk data. To fully decode each of these chunks, we also make - * sure we have enough data in the buffer for the 4 byte CRC at the - * end of every chunk (except IDAT, which is handled separately). - */ - if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER)) - { - png_byte chunk_length[4]; - - if (png_ptr->buffer_size < 8) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_fill_buffer(png_ptr, chunk_length, 4); - png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length); - png_reset_crc(png_ptr); - png_crc_read(png_ptr, png_ptr->chunk_name, 4); - png_check_chunk_name(png_ptr, png_ptr->chunk_name); - png_ptr->mode |= PNG_HAVE_CHUNK_HEADER; - } - - if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - if (png_ptr->mode & PNG_AFTER_IDAT) - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; - - if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4)) - { - if (png_ptr->push_length != 13) - png_error(png_ptr, "Invalid IHDR length"); - - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length); - } - - else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length); - - png_ptr->process_mode = PNG_READ_DONE_MODE; - png_push_have_end(png_ptr, info_ptr); - } - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - png_ptr->mode |= PNG_HAVE_IDAT; - - png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length); - - if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4)) - png_ptr->mode |= PNG_HAVE_PLTE; - - else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - { - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before IDAT"); - - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - png_error(png_ptr, "Missing PLTE before IDAT"); - } - } - -#endif - else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length); - } - - else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - { - /* If we reach an IDAT chunk, this means we have read all of the - * header chunks, and we can start reading the image (or if this - * is called after the image has been read - we have an error). - */ - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before IDAT"); - - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - png_error(png_ptr, "Missing PLTE before IDAT"); - - if (png_ptr->mode & PNG_HAVE_IDAT) - { - if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT)) - if (png_ptr->push_length == 0) - return; - - if (png_ptr->mode & PNG_AFTER_IDAT) - png_error(png_ptr, "Too many IDAT's found"); - } - - png_ptr->idat_size = png_ptr->push_length; - png_ptr->mode |= PNG_HAVE_IDAT; - png_ptr->process_mode = PNG_READ_IDAT_MODE; - png_push_have_info(png_ptr, info_ptr); - png_ptr->zstream.avail_out = - (uInt) PNG_ROWBYTES(png_ptr->pixel_depth, - png_ptr->iwidth) + 1; - png_ptr->zstream.next_out = png_ptr->row_buf; - return; - } - -#ifdef PNG_READ_gAMA_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_bKGD_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_hIST_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length); - } -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tIME_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4)) - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif - else - { - if (png_ptr->push_length + 4 > png_ptr->buffer_size) - { - png_push_save_buffer(png_ptr); - return; - } - png_push_handle_unknown(png_ptr, info_ptr, png_ptr->push_length); - } - - png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER; -} - -void /* PRIVATE */ -png_push_crc_skip(png_structp png_ptr, png_uint_32 skip) -{ - png_ptr->process_mode = PNG_SKIP_MODE; - png_ptr->skip_length = skip; -} - -void /* PRIVATE */ -png_push_crc_finish(png_structp png_ptr) -{ - if (png_ptr->skip_length && png_ptr->save_buffer_size) - { - png_size_t save_size; - - if (png_ptr->skip_length < (png_uint_32)png_ptr->save_buffer_size) - save_size = (png_size_t)png_ptr->skip_length; - else - save_size = png_ptr->save_buffer_size; - - png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size); - - png_ptr->skip_length -= save_size; - png_ptr->buffer_size -= save_size; - png_ptr->save_buffer_size -= save_size; - png_ptr->save_buffer_ptr += save_size; - } - if (png_ptr->skip_length && png_ptr->current_buffer_size) - { - png_size_t save_size; - - if (png_ptr->skip_length < (png_uint_32)png_ptr->current_buffer_size) - save_size = (png_size_t)png_ptr->skip_length; - else - save_size = png_ptr->current_buffer_size; - - png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size); - - png_ptr->skip_length -= save_size; - png_ptr->buffer_size -= save_size; - png_ptr->current_buffer_size -= save_size; - png_ptr->current_buffer_ptr += save_size; - } - if (!png_ptr->skip_length) - { - if (png_ptr->buffer_size < 4) - { - png_push_save_buffer(png_ptr); - return; - } - - png_crc_finish(png_ptr, 0); - png_ptr->process_mode = PNG_READ_CHUNK_MODE; - } -} - -void PNGAPI -png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length) -{ - png_bytep ptr; - - if (png_ptr == NULL) - return; - - ptr = buffer; - if (png_ptr->save_buffer_size) - { - png_size_t save_size; - - if (length < png_ptr->save_buffer_size) - save_size = length; - else - save_size = png_ptr->save_buffer_size; - - png_memcpy(ptr, png_ptr->save_buffer_ptr, save_size); - length -= save_size; - ptr += save_size; - png_ptr->buffer_size -= save_size; - png_ptr->save_buffer_size -= save_size; - png_ptr->save_buffer_ptr += save_size; - } - if (length && png_ptr->current_buffer_size) - { - png_size_t save_size; - - if (length < png_ptr->current_buffer_size) - save_size = length; - - else - save_size = png_ptr->current_buffer_size; - - png_memcpy(ptr, png_ptr->current_buffer_ptr, save_size); - png_ptr->buffer_size -= save_size; - png_ptr->current_buffer_size -= save_size; - png_ptr->current_buffer_ptr += save_size; - } -} - -void /* PRIVATE */ -png_push_save_buffer(png_structp png_ptr) -{ - if (png_ptr->save_buffer_size) - { - if (png_ptr->save_buffer_ptr != png_ptr->save_buffer) - { - png_size_t i, istop; - png_bytep sp; - png_bytep dp; - - istop = png_ptr->save_buffer_size; - for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer; - i < istop; i++, sp++, dp++) - { - *dp = *sp; - } - } - } - if (png_ptr->save_buffer_size + png_ptr->current_buffer_size > - png_ptr->save_buffer_max) - { - png_size_t new_max; - png_bytep old_buffer; - - if (png_ptr->save_buffer_size > PNG_SIZE_MAX - - (png_ptr->current_buffer_size + 256)) - { - png_error(png_ptr, "Potential overflow of save_buffer"); - } - - new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256; - old_buffer = png_ptr->save_buffer; - png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr, - (png_uint_32)new_max); - if (png_ptr->save_buffer == NULL) - { - png_free(png_ptr, old_buffer); - png_error(png_ptr, "Insufficient memory for save_buffer"); - } - png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size); - png_free(png_ptr, old_buffer); - png_ptr->save_buffer_max = new_max; - } - if (png_ptr->current_buffer_size) - { - png_memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size, - png_ptr->current_buffer_ptr, png_ptr->current_buffer_size); - png_ptr->save_buffer_size += png_ptr->current_buffer_size; - png_ptr->current_buffer_size = 0; - } - png_ptr->save_buffer_ptr = png_ptr->save_buffer; - png_ptr->buffer_size = 0; -} - -void /* PRIVATE */ -png_push_restore_buffer(png_structp png_ptr, png_bytep buffer, - png_size_t buffer_length) -{ - png_ptr->current_buffer = buffer; - png_ptr->current_buffer_size = buffer_length; - png_ptr->buffer_size = buffer_length + png_ptr->save_buffer_size; - png_ptr->current_buffer_ptr = png_ptr->current_buffer; -} - -void /* PRIVATE */ -png_push_read_IDAT(png_structp png_ptr) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IDAT; -#endif - if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER)) - { - png_byte chunk_length[4]; - - if (png_ptr->buffer_size < 8) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_fill_buffer(png_ptr, chunk_length, 4); - png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length); - png_reset_crc(png_ptr); - png_crc_read(png_ptr, png_ptr->chunk_name, 4); - png_ptr->mode |= PNG_HAVE_CHUNK_HEADER; - - if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - { - png_ptr->process_mode = PNG_READ_CHUNK_MODE; - if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED)) - png_error(png_ptr, "Not enough compressed data"); - return; - } - - png_ptr->idat_size = png_ptr->push_length; - } - if (png_ptr->idat_size && png_ptr->save_buffer_size) - { - png_size_t save_size; - - if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size) - { - save_size = (png_size_t)png_ptr->idat_size; - - /* Check for overflow */ - if ((png_uint_32)save_size != png_ptr->idat_size) - png_error(png_ptr, "save_size overflowed in pngpread"); - } - else - save_size = png_ptr->save_buffer_size; - - png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size); - - png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size); - - png_ptr->idat_size -= save_size; - png_ptr->buffer_size -= save_size; - png_ptr->save_buffer_size -= save_size; - png_ptr->save_buffer_ptr += save_size; - } - if (png_ptr->idat_size && png_ptr->current_buffer_size) - { - png_size_t save_size; - - if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size) - { - save_size = (png_size_t)png_ptr->idat_size; - - /* Check for overflow */ - if ((png_uint_32)save_size != png_ptr->idat_size) - png_error(png_ptr, "save_size overflowed in pngpread"); - } - else - save_size = png_ptr->current_buffer_size; - - png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size); - - png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size); - - png_ptr->idat_size -= save_size; - png_ptr->buffer_size -= save_size; - png_ptr->current_buffer_size -= save_size; - png_ptr->current_buffer_ptr += save_size; - } - if (!png_ptr->idat_size) - { - if (png_ptr->buffer_size < 4) - { - png_push_save_buffer(png_ptr); - return; - } - - png_crc_finish(png_ptr, 0); - png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER; - png_ptr->mode |= PNG_AFTER_IDAT; - } -} - -void /* PRIVATE */ -png_process_IDAT_data(png_structp png_ptr, png_bytep buffer, - png_size_t buffer_length) -{ - /* The caller checks for a non-zero buffer length. */ - if (!(buffer_length > 0) || buffer == NULL) - png_error(png_ptr, "No IDAT data (internal error)"); - - /* This routine must process all the data it has been given - * before returning, calling the row callback as required to - * handle the uncompressed results. - */ - png_ptr->zstream.next_in = buffer; - png_ptr->zstream.avail_in = (uInt)buffer_length; - - /* Keep going until the decompressed data is all processed - * or the stream marked as finished. - */ - while (png_ptr->zstream.avail_in > 0 && - !(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED)) - { - int ret; - - /* We have data for zlib, but we must check that zlib - * has somewhere to put the results. It doesn't matter - * if we don't expect any results -- it may be the input - * data is just the LZ end code. - */ - if (!(png_ptr->zstream.avail_out > 0)) - { - png_ptr->zstream.avail_out = - (uInt) PNG_ROWBYTES(png_ptr->pixel_depth, - png_ptr->iwidth) + 1; - png_ptr->zstream.next_out = png_ptr->row_buf; - } - - /* Using Z_SYNC_FLUSH here means that an unterminated - * LZ stream can still be handled (a stream with a missing - * end code), otherwise (Z_NO_FLUSH) a future zlib - * implementation might defer output and, therefore, - * change the current behavior. (See comments in inflate.c - * for why this doesn't happen at present with zlib 1.2.5.) - */ - ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH); - - /* Check for any failure before proceeding. */ - if (ret != Z_OK && ret != Z_STREAM_END) - { - /* Terminate the decompression. */ - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - - /* This may be a truncated stream (missing or - * damaged end code). Treat that as a warning. - */ - if (png_ptr->row_number >= png_ptr->num_rows || - png_ptr->pass > 6) - png_warning(png_ptr, "Truncated compressed data in IDAT"); - else - png_error(png_ptr, "Decompression error in IDAT"); - - /* Skip the check on unprocessed input */ - return; - } - - /* Did inflate output any data? */ - if (png_ptr->zstream.next_out != png_ptr->row_buf) - { - /* Is this unexpected data after the last row? - * If it is, artificially terminate the LZ output - * here. - */ - if (png_ptr->row_number >= png_ptr->num_rows || - png_ptr->pass > 6) - { - /* Extra data. */ - png_warning(png_ptr, "Extra compressed data in IDAT"); - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - /* Do no more processing; skip the unprocessed - * input check below. - */ - return; - } - - /* Do we have a complete row? */ - if (png_ptr->zstream.avail_out == 0) - png_push_process_row(png_ptr); - } - - /* And check for the end of the stream. */ - if (ret == Z_STREAM_END) - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - } - - /* All the data should have been processed, if anything - * is left at this point we have bytes of IDAT data - * after the zlib end code. - */ - if (png_ptr->zstream.avail_in > 0) - png_warning(png_ptr, "Extra compression data"); -} - -void /* PRIVATE */ -png_push_process_row(png_structp png_ptr) -{ - png_ptr->row_info.color_type = png_ptr->color_type; - png_ptr->row_info.width = png_ptr->iwidth; - png_ptr->row_info.channels = png_ptr->channels; - png_ptr->row_info.bit_depth = png_ptr->bit_depth; - png_ptr->row_info.pixel_depth = png_ptr->pixel_depth; - - png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth, - png_ptr->row_info.width); - - png_read_filter_row(png_ptr, &(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->prev_row + 1, - (int)(png_ptr->row_buf[0])); - - png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf, - png_ptr->rowbytes + 1); - - if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) - png_do_read_transformations(png_ptr); - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Blow up interlaced rows to full size */ - if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) - { - if (png_ptr->pass < 6) -/* old interface (pre-1.0.9): - png_do_read_interlace(&(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations); - */ - png_do_read_interlace(png_ptr); - - switch (png_ptr->pass) - { - case 0: - { - int i; - for (i = 0; i < 8 && png_ptr->pass == 0; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */ - } - - if (png_ptr->pass == 2) /* Pass 1 might be empty */ - { - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - - if (png_ptr->pass == 4 && png_ptr->height <= 4) - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - - if (png_ptr->pass == 6 && png_ptr->height <= 4) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - - case 1: - { - int i; - for (i = 0; i < 8 && png_ptr->pass == 1; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 2) /* Skip top 4 generated rows */ - { - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 2: - { - int i; - - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 4) /* Pass 3 might be empty */ - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 3: - { - int i; - - for (i = 0; i < 4 && png_ptr->pass == 3; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 4) /* Skip top two generated rows */ - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 4: - { - int i; - - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 6) /* Pass 5 might be empty */ - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - - case 5: - { - int i; - - for (i = 0; i < 2 && png_ptr->pass == 5; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 6) /* Skip top generated row */ - { - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - case 6: - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - - if (png_ptr->pass != 6) - break; - - png_push_have_row(png_ptr, png_bytep_NULL); - png_read_push_finish_row(png_ptr); - } - } - } - else -#endif - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } -} - -void /* PRIVATE */ -png_read_push_finish_row(png_structp png_ptr) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; - - /* Height of interlace block. This is not currently used - if you need - * it, uncomment it here and in png.h - PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1}; - */ -#endif - - png_ptr->row_number++; - if (png_ptr->row_number < png_ptr->num_rows) - return; - -#ifdef PNG_READ_INTERLACING_SUPPORTED - if (png_ptr->interlaced) - { - png_ptr->row_number = 0; - png_memset_check(png_ptr, png_ptr->prev_row, 0, - png_ptr->rowbytes + 1); - do - { - png_ptr->pass++; - if ((png_ptr->pass == 1 && png_ptr->width < 5) || - (png_ptr->pass == 3 && png_ptr->width < 3) || - (png_ptr->pass == 5 && png_ptr->width < 2)) - png_ptr->pass++; - - if (png_ptr->pass > 7) - png_ptr->pass--; - - if (png_ptr->pass >= 7) - break; - - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - - if (png_ptr->transformations & PNG_INTERLACE) - break; - - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - - } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0); - } -#endif /* PNG_READ_INTERLACING_SUPPORTED */ -} - -#ifdef PNG_READ_tEXt_SUPPORTED -void /* PRIVATE */ -png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 - length) -{ - if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) - { - png_error(png_ptr, "Out of place tEXt"); - info_ptr = info_ptr; /* To quiet some compiler warnings */ - } - -#ifdef PNG_MAX_MALLOC_64K - png_ptr->skip_length = 0; /* This may not be necessary */ - - if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */ - { - png_warning(png_ptr, "tEXt chunk too large to fit in memory"); - png_ptr->skip_length = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - - png_ptr->current_text = (png_charp)png_malloc(png_ptr, - (png_uint_32)(length + 1)); - png_ptr->current_text[length] = '\0'; - png_ptr->current_text_ptr = png_ptr->current_text; - png_ptr->current_text_size = (png_size_t)length; - png_ptr->current_text_left = (png_size_t)length; - png_ptr->process_mode = PNG_READ_tEXt_MODE; -} - -void /* PRIVATE */ -png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr->buffer_size && png_ptr->current_text_left) - { - png_size_t text_size; - - if (png_ptr->buffer_size < png_ptr->current_text_left) - text_size = png_ptr->buffer_size; - - else - text_size = png_ptr->current_text_left; - - png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); - png_ptr->current_text_left -= text_size; - png_ptr->current_text_ptr += text_size; - } - if (!(png_ptr->current_text_left)) - { - png_textp text_ptr; - png_charp text; - png_charp key; - int ret; - - if (png_ptr->buffer_size < 4) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_crc_finish(png_ptr); - -#ifdef PNG_MAX_MALLOC_64K - if (png_ptr->skip_length) - return; -#endif - - key = png_ptr->current_text; - - for (text = key; *text; text++) - /* Empty loop */ ; - - if (text < key + png_ptr->current_text_size) - text++; - - text_ptr = (png_textp)png_malloc(png_ptr, - (png_uint_32)png_sizeof(png_text)); - text_ptr->compression = PNG_TEXT_COMPRESSION_NONE; - text_ptr->key = key; -#ifdef PNG_iTXt_SUPPORTED - text_ptr->lang = NULL; - text_ptr->lang_key = NULL; -#endif - text_ptr->text = text; - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_free(png_ptr, key); - png_free(png_ptr, text_ptr); - png_ptr->current_text = NULL; - - if (ret) - png_warning(png_ptr, "Insufficient memory to store text chunk."); - } -} -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED -void /* PRIVATE */ -png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 - length) -{ - if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) - { - png_error(png_ptr, "Out of place zTXt"); - info_ptr = info_ptr; /* To quiet some compiler warnings */ - } - -#ifdef PNG_MAX_MALLOC_64K - /* We can't handle zTXt chunks > 64K, since we don't have enough space - * to be able to store the uncompressed data. Actually, the threshold - * is probably around 32K, but it isn't as definite as 64K is. - */ - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "zTXt chunk too large to fit in memory"); - png_push_crc_skip(png_ptr, length); - return; - } -#endif - - png_ptr->current_text = (png_charp)png_malloc(png_ptr, - (png_uint_32)(length + 1)); - png_ptr->current_text[length] = '\0'; - png_ptr->current_text_ptr = png_ptr->current_text; - png_ptr->current_text_size = (png_size_t)length; - png_ptr->current_text_left = (png_size_t)length; - png_ptr->process_mode = PNG_READ_zTXt_MODE; -} - -void /* PRIVATE */ -png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr->buffer_size && png_ptr->current_text_left) - { - png_size_t text_size; - - if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left) - text_size = png_ptr->buffer_size; - - else - text_size = png_ptr->current_text_left; - - png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); - png_ptr->current_text_left -= text_size; - png_ptr->current_text_ptr += text_size; - } - if (!(png_ptr->current_text_left)) - { - png_textp text_ptr; - png_charp text; - png_charp key; - int ret; - png_size_t text_size, key_size; - - if (png_ptr->buffer_size < 4) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_crc_finish(png_ptr); - - key = png_ptr->current_text; - - for (text = key; *text; text++) - /* Empty loop */ ; - - /* zTXt can't have zero text */ - if (text >= key + png_ptr->current_text_size) - { - png_ptr->current_text = NULL; - png_free(png_ptr, key); - return; - } - - text++; - - if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */ - { - png_ptr->current_text = NULL; - png_free(png_ptr, key); - return; - } - - text++; - - png_ptr->zstream.next_in = (png_bytep )text; - png_ptr->zstream.avail_in = (uInt)(png_ptr->current_text_size - - (text - key)); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - - key_size = text - key; - text_size = 0; - text = NULL; - ret = Z_STREAM_END; - - while (png_ptr->zstream.avail_in) - { - ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH); - if (ret != Z_OK && ret != Z_STREAM_END) - { - inflateReset(&png_ptr->zstream); - png_ptr->zstream.avail_in = 0; - png_ptr->current_text = NULL; - png_free(png_ptr, key); - png_free(png_ptr, text); - return; - } - if (!(png_ptr->zstream.avail_out) || ret == Z_STREAM_END) - { - if (text == NULL) - { - text = (png_charp)png_malloc(png_ptr, - (png_uint_32)(png_ptr->zbuf_size - - png_ptr->zstream.avail_out + key_size + 1)); - - png_memcpy(text + key_size, png_ptr->zbuf, - png_ptr->zbuf_size - png_ptr->zstream.avail_out); - - png_memcpy(text, key, key_size); - - text_size = key_size + png_ptr->zbuf_size - - png_ptr->zstream.avail_out; - - *(text + text_size) = '\0'; - } - else - { - png_charp tmp; - - tmp = text; - text = (png_charp)png_malloc(png_ptr, text_size + - (png_uint_32)(png_ptr->zbuf_size - - png_ptr->zstream.avail_out + 1)); - - png_memcpy(text, tmp, text_size); - png_free(png_ptr, tmp); - - png_memcpy(text + text_size, png_ptr->zbuf, - png_ptr->zbuf_size - png_ptr->zstream.avail_out); - - text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out; - *(text + text_size) = '\0'; - } - if (ret != Z_STREAM_END) - { - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - } - } - else - { - break; - } - - if (ret == Z_STREAM_END) - break; - } - - inflateReset(&png_ptr->zstream); - png_ptr->zstream.avail_in = 0; - - if (ret != Z_STREAM_END) - { - png_ptr->current_text = NULL; - png_free(png_ptr, key); - png_free(png_ptr, text); - return; - } - - png_ptr->current_text = NULL; - png_free(png_ptr, key); - key = text; - text += key_size; - - text_ptr = (png_textp)png_malloc(png_ptr, - (png_uint_32)png_sizeof(png_text)); - text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt; - text_ptr->key = key; -#ifdef PNG_iTXt_SUPPORTED - text_ptr->lang = NULL; - text_ptr->lang_key = NULL; -#endif - text_ptr->text = text; - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_free(png_ptr, key); - png_free(png_ptr, text_ptr); - - if (ret) - png_warning(png_ptr, "Insufficient memory to store text chunk."); - } -} -#endif - -#ifdef PNG_READ_iTXt_SUPPORTED -void /* PRIVATE */ -png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 - length) -{ - if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND)) - { - png_error(png_ptr, "Out of place iTXt"); - info_ptr = info_ptr; /* To quiet some compiler warnings */ - } - -#ifdef PNG_MAX_MALLOC_64K - png_ptr->skip_length = 0; /* This may not be necessary */ - - if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */ - { - png_warning(png_ptr, "iTXt chunk too large to fit in memory"); - png_ptr->skip_length = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - - png_ptr->current_text = (png_charp)png_malloc(png_ptr, - (png_uint_32)(length + 1)); - png_ptr->current_text[length] = '\0'; - png_ptr->current_text_ptr = png_ptr->current_text; - png_ptr->current_text_size = (png_size_t)length; - png_ptr->current_text_left = (png_size_t)length; - png_ptr->process_mode = PNG_READ_iTXt_MODE; -} - -void /* PRIVATE */ -png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr) -{ - - if (png_ptr->buffer_size && png_ptr->current_text_left) - { - png_size_t text_size; - - if (png_ptr->buffer_size < png_ptr->current_text_left) - text_size = png_ptr->buffer_size; - - else - text_size = png_ptr->current_text_left; - - png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size); - png_ptr->current_text_left -= text_size; - png_ptr->current_text_ptr += text_size; - } - if (!(png_ptr->current_text_left)) - { - png_textp text_ptr; - png_charp key; - int comp_flag; - png_charp lang; - png_charp lang_key; - png_charp text; - int ret; - - if (png_ptr->buffer_size < 4) - { - png_push_save_buffer(png_ptr); - return; - } - - png_push_crc_finish(png_ptr); - -#ifdef PNG_MAX_MALLOC_64K - if (png_ptr->skip_length) - return; -#endif - - key = png_ptr->current_text; - - for (lang = key; *lang; lang++) - /* Empty loop */ ; - - if (lang < key + png_ptr->current_text_size - 3) - lang++; - - comp_flag = *lang++; - lang++; /* Skip comp_type, always zero */ - - for (lang_key = lang; *lang_key; lang_key++) - /* Empty loop */ ; - - lang_key++; /* Skip NUL separator */ - - text=lang_key; - - if (lang_key < key + png_ptr->current_text_size - 1) - { - for (; *text; text++) - /* Empty loop */ ; - } - - if (text < key + png_ptr->current_text_size) - text++; - - text_ptr = (png_textp)png_malloc(png_ptr, - (png_uint_32)png_sizeof(png_text)); - - text_ptr->compression = comp_flag + 2; - text_ptr->key = key; - text_ptr->lang = lang; - text_ptr->lang_key = lang_key; - text_ptr->text = text; - text_ptr->text_length = 0; - text_ptr->itxt_length = png_strlen(text); - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_ptr->current_text = NULL; - - png_free(png_ptr, text_ptr); - if (ret) - png_warning(png_ptr, "Insufficient memory to store iTXt chunk."); - } -} -#endif - -/* This function is called when we haven't found a handler for this - * chunk. If there isn't a problem with the chunk itself (ie a bad chunk - * name or a critical chunk), the chunk is (currently) silently ignored. - */ -void /* PRIVATE */ -png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 - length) -{ - png_uint_32 skip = 0; - - if (!(png_ptr->chunk_name[0] & 0x20)) - { -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != - PNG_HANDLE_CHUNK_ALWAYS -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - && png_ptr->read_user_chunk_fn == NULL -#endif - ) -#endif - png_chunk_error(png_ptr, "unknown critical chunk"); - - info_ptr = info_ptr; /* To quiet some compiler warnings */ - } - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) - { -#ifdef PNG_MAX_MALLOC_64K - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "unknown chunk too large to fit in memory"); - skip = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - png_memcpy((png_charp)png_ptr->unknown_chunk.name, - (png_charp)png_ptr->chunk_name, - png_sizeof(png_ptr->unknown_chunk.name)); - png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name) - 1] - = '\0'; - - png_ptr->unknown_chunk.size = (png_size_t)length; - - if (length == 0) - png_ptr->unknown_chunk.data = NULL; - - else - { - png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, - (png_uint_32)length); - png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); - } - -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - if (png_ptr->read_user_chunk_fn != NULL) - { - /* Callback to user unknown chunk handler */ - int ret; - ret = (*(png_ptr->read_user_chunk_fn)) - (png_ptr, &png_ptr->unknown_chunk); - - if (ret < 0) - png_chunk_error(png_ptr, "error in user chunk"); - - if (ret == 0) - { - if (!(png_ptr->chunk_name[0] & 0x20)) - if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != - PNG_HANDLE_CHUNK_ALWAYS) - png_chunk_error(png_ptr, "unknown critical chunk"); - png_set_unknown_chunks(png_ptr, info_ptr, - &png_ptr->unknown_chunk, 1); - } - } - - else -#endif - png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - } - - else -#endif - skip=length; - png_push_crc_skip(png_ptr, skip); -} - -void /* PRIVATE */ -png_push_have_info(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr->info_fn != NULL) - (*(png_ptr->info_fn))(png_ptr, info_ptr); -} - -void /* PRIVATE */ -png_push_have_end(png_structp png_ptr, png_infop info_ptr) -{ - if (png_ptr->end_fn != NULL) - (*(png_ptr->end_fn))(png_ptr, info_ptr); -} - -void /* PRIVATE */ -png_push_have_row(png_structp png_ptr, png_bytep row) -{ - if (png_ptr->row_fn != NULL) - (*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number, - (int)png_ptr->pass); -} - -void PNGAPI -png_progressive_combine_row (png_structp png_ptr, - png_bytep old_row, png_bytep new_row) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST int FARDATA png_pass_dsp_mask[7] = - {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}; -#endif - - if (png_ptr == NULL) - return; - - if (new_row != NULL) /* new_row must == png_ptr->row_buf here. */ - png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]); -} - -void PNGAPI -png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr, - png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, - png_progressive_end_ptr end_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->info_fn = info_fn; - png_ptr->row_fn = row_fn; - png_ptr->end_fn = end_fn; - - png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer); -} - -png_voidp PNGAPI -png_get_progressive_ptr(png_structp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - - return png_ptr->io_ptr; -} -#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngread.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngread.c deleted file mode 100644 index 6207624..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngread.c +++ /dev/null @@ -1,1528 +0,0 @@ - -/* pngread.c - read a PNG file - * - * Last changed in libpng 1.2.44 [June 26, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains routines that an application calls directly to - * read a PNG file or stream. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_READ_SUPPORTED - - -/* Create a PNG structure for reading, and allocate any memory needed. */ -png_structp PNGAPI -png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn) -{ - -#ifdef PNG_USER_MEM_SUPPORTED - return (png_create_read_struct_2(user_png_ver, error_ptr, error_fn, - warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL)); -} - -/* Alternate create PNG structure for reading, and allocate any memory - * needed. - */ -png_structp PNGAPI -png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ - -#ifdef PNG_SETJMP_SUPPORTED - volatile -#endif - png_structp png_ptr; - -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - jmp_buf jmpbuf; -#endif -#endif - - int i; - - png_debug(1, "in png_create_read_struct"); - -#ifdef PNG_USER_MEM_SUPPORTED - png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG, - (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr); -#else - png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG); -#endif - if (png_ptr == NULL) - return (NULL); - - /* Added at libpng-1.2.6 */ -#ifdef PNG_USER_LIMITS_SUPPORTED - png_ptr->user_width_max = PNG_USER_WIDTH_MAX; - png_ptr->user_height_max = PNG_USER_HEIGHT_MAX; -# ifdef PNG_USER_CHUNK_CACHE_MAX - /* Added at libpng-1.2.43 and 1.4.0 */ - png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX; -# endif -# ifdef PNG_SET_USER_CHUNK_MALLOC_MAX - /* Added at libpng-1.2.43 and 1.4.1 */ - png_ptr->user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX; -# endif -#endif - -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) -#else - if (setjmp(png_ptr->jmpbuf)) -#endif - { - png_free(png_ptr, png_ptr->zbuf); - png_ptr->zbuf = NULL; -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)png_ptr, - (png_free_ptr)free_fn, (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)png_ptr); -#endif - return (NULL); - } -#ifdef USE_FAR_KEYWORD - png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf)); -#endif -#endif /* PNG_SETJMP_SUPPORTED */ - -#ifdef PNG_USER_MEM_SUPPORTED - png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn); -#endif - - png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn); - - if (user_png_ver) - { - i = 0; - do - { - if (user_png_ver[i] != png_libpng_ver[i]) - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - } while (png_libpng_ver[i++]); - } - else - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - - - if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH) - { - /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so - * we must recompile any applications that use any older library version. - * For versions after libpng 1.0, we will be compatible, so we need - * only check the first digit. - */ - if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] || - (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) || - (user_png_ver[0] == '0' && user_png_ver[2] < '9')) - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char msg[80]; - if (user_png_ver) - { - png_snprintf(msg, 80, - "Application was compiled with png.h from libpng-%.20s", - user_png_ver); - png_warning(png_ptr, msg); - } - png_snprintf(msg, 80, - "Application is running with png.c from libpng-%.20s", - png_libpng_ver); - png_warning(png_ptr, msg); -#endif -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "Incompatible libpng version in application and library"); - } - } - - /* Initialize zbuf - compression buffer */ - png_ptr->zbuf_size = PNG_ZBUF_SIZE; - png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); - png_ptr->zstream.zalloc = png_zalloc; - png_ptr->zstream.zfree = png_zfree; - png_ptr->zstream.opaque = (voidpf)png_ptr; - - switch (inflateInit(&png_ptr->zstream)) - { - case Z_OK: /* Do nothing */ break; - case Z_MEM_ERROR: - case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); - break; - case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); - break; - default: png_error(png_ptr, "Unknown zlib error"); - } - - - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - - png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL); - -#ifdef PNG_SETJMP_SUPPORTED -/* Applications that neglect to set up their own setjmp() and then - encounter a png_error() will longjmp here. Since the jmpbuf is - then meaningless we abort instead of returning. */ -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) - PNG_ABORT(); - png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf)); -#else - if (setjmp(png_ptr->jmpbuf)) - PNG_ABORT(); -#endif -#endif /* PNG_SETJMP_SUPPORTED */ - - return (png_ptr); -} - -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -/* Initialize PNG structure for reading, and allocate any memory needed. - * This interface is deprecated in favour of the png_create_read_struct(), - * and it will disappear as of libpng-1.3.0. - */ -#undef png_read_init -void PNGAPI -png_read_init(png_structp png_ptr) -{ - /* We only come here via pre-1.0.7-compiled applications */ - png_read_init_2(png_ptr, "1.0.6 or earlier", 0, 0); -} - -void PNGAPI -png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver, - png_size_t png_struct_size, png_size_t png_info_size) -{ - /* We only come here via pre-1.0.12-compiled applications */ - if (png_ptr == NULL) - return; -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - if (png_sizeof(png_struct) > png_struct_size || - png_sizeof(png_info) > png_info_size) - { - char msg[80]; - png_ptr->warning_fn = NULL; - if (user_png_ver) - { - png_snprintf(msg, 80, - "Application was compiled with png.h from libpng-%.20s", - user_png_ver); - png_warning(png_ptr, msg); - } - png_snprintf(msg, 80, - "Application is running with png.c from libpng-%.20s", - png_libpng_ver); - png_warning(png_ptr, msg); - } -#endif - if (png_sizeof(png_struct) > png_struct_size) - { - png_ptr->error_fn = NULL; -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "The png struct allocated by the application for reading is" - " too small."); - } - if (png_sizeof(png_info) > png_info_size) - { - png_ptr->error_fn = NULL; -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "The info struct allocated by application for reading is" - " too small."); - } - png_read_init_3(&png_ptr, user_png_ver, png_struct_size); -} -#endif /* PNG_1_0_X || PNG_1_2_X */ - -void PNGAPI -png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, - png_size_t png_struct_size) -{ -#ifdef PNG_SETJMP_SUPPORTED - jmp_buf tmp_jmp; /* to save current jump buffer */ -#endif - - int i = 0; - - png_structp png_ptr=*ptr_ptr; - - if (png_ptr == NULL) - return; - - do - { - if (user_png_ver[i] != png_libpng_ver[i]) - { -#ifdef PNG_LEGACY_SUPPORTED - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; -#else - png_ptr->warning_fn = NULL; - png_warning(png_ptr, - "Application uses deprecated png_read_init() and should be" - " recompiled."); - break; -#endif - } - } while (png_libpng_ver[i++]); - - png_debug(1, "in png_read_init_3"); - -#ifdef PNG_SETJMP_SUPPORTED - /* Save jump buffer and error functions */ - png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); -#endif - - if (png_sizeof(png_struct) > png_struct_size) - { - png_destroy_struct(png_ptr); - *ptr_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG); - png_ptr = *ptr_ptr; - } - - /* Reset all variables to 0 */ - png_memset(png_ptr, 0, png_sizeof(png_struct)); - -#ifdef PNG_SETJMP_SUPPORTED - /* Restore jump buffer */ - png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); -#endif - - /* Added at libpng-1.2.6 */ -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - png_ptr->user_width_max = PNG_USER_WIDTH_MAX; - png_ptr->user_height_max = PNG_USER_HEIGHT_MAX; -#endif - - /* Initialize zbuf - compression buffer */ - png_ptr->zbuf_size = PNG_ZBUF_SIZE; - png_ptr->zstream.zalloc = png_zalloc; - png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); - png_ptr->zstream.zalloc = png_zalloc; - png_ptr->zstream.zfree = png_zfree; - png_ptr->zstream.opaque = (voidpf)png_ptr; - - switch (inflateInit(&png_ptr->zstream)) - { - case Z_OK: /* Do nothing */ break; - case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); break; - case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); - break; - default: png_error(png_ptr, "Unknown zlib error"); - } - - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - - png_set_read_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL); -} - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the information before the actual image data. This has been - * changed in v0.90 to allow reading a file that already has the magic - * bytes read from the stream. You can tell libpng how many bytes have - * been read from the beginning of the stream (up to the maximum of 8) - * via png_set_sig_bytes(), and we will only check the remaining bytes - * here. The application can then have access to the signature bytes we - * read if it is determined that this isn't a valid PNG file. - */ -void PNGAPI -png_read_info(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_read_info"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* If we haven't checked all of the PNG signature bytes, do so now. */ - if (png_ptr->sig_bytes < 8) - { - png_size_t num_checked = png_ptr->sig_bytes, - num_to_check = 8 - num_checked; - - png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check); - png_ptr->sig_bytes = 8; - - if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check)) - { - if (num_checked < 4 && - png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4)) - png_error(png_ptr, "Not a PNG file"); - else - png_error(png_ptr, "PNG file corrupted by ASCII conversion"); - } - if (num_checked < 3) - png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; - } - - for (;;) - { -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IHDR; - PNG_CONST PNG_IDAT; - PNG_CONST PNG_IEND; - PNG_CONST PNG_PLTE; -#ifdef PNG_READ_bKGD_SUPPORTED - PNG_CONST PNG_bKGD; -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - PNG_CONST PNG_cHRM; -#endif -#ifdef PNG_READ_gAMA_SUPPORTED - PNG_CONST PNG_gAMA; -#endif -#ifdef PNG_READ_hIST_SUPPORTED - PNG_CONST PNG_hIST; -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - PNG_CONST PNG_iCCP; -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - PNG_CONST PNG_iTXt; -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - PNG_CONST PNG_oFFs; -#endif -#ifdef PNG_READ_pCAL_SUPPORTED - PNG_CONST PNG_pCAL; -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - PNG_CONST PNG_pHYs; -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - PNG_CONST PNG_sBIT; -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - PNG_CONST PNG_sCAL; -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - PNG_CONST PNG_sPLT; -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - PNG_CONST PNG_sRGB; -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - PNG_CONST PNG_tEXt; -#endif -#ifdef PNG_READ_tIME_SUPPORTED - PNG_CONST PNG_tIME; -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - PNG_CONST PNG_tRNS; -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - PNG_CONST PNG_zTXt; -#endif -#endif /* PNG_USE_LOCAL_ARRAYS */ - png_uint_32 length = png_read_chunk_header(png_ptr); - PNG_CONST png_bytep chunk_name = png_ptr->chunk_name; - - /* This should be a binary subdivision search or a hash for - * matching the chunk name rather than a linear search. - */ - if (!png_memcmp(chunk_name, png_IDAT, 4)) - if (png_ptr->mode & PNG_AFTER_IDAT) - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; - - if (!png_memcmp(chunk_name, png_IHDR, 4)) - png_handle_IHDR(png_ptr, info_ptr, length); - else if (!png_memcmp(chunk_name, png_IEND, 4)) - png_handle_IEND(png_ptr, info_ptr, length); -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if (png_handle_as_unknown(png_ptr, chunk_name)) - { - if (!png_memcmp(chunk_name, png_IDAT, 4)) - png_ptr->mode |= PNG_HAVE_IDAT; - png_handle_unknown(png_ptr, info_ptr, length); - if (!png_memcmp(chunk_name, png_PLTE, 4)) - png_ptr->mode |= PNG_HAVE_PLTE; - else if (!png_memcmp(chunk_name, png_IDAT, 4)) - { - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before IDAT"); - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - png_error(png_ptr, "Missing PLTE before IDAT"); - break; - } - } -#endif - else if (!png_memcmp(chunk_name, png_PLTE, 4)) - png_handle_PLTE(png_ptr, info_ptr, length); - else if (!png_memcmp(chunk_name, png_IDAT, 4)) - { - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before IDAT"); - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - png_error(png_ptr, "Missing PLTE before IDAT"); - - png_ptr->idat_size = length; - png_ptr->mode |= PNG_HAVE_IDAT; - break; - } -#ifdef PNG_READ_bKGD_SUPPORTED - else if (!png_memcmp(chunk_name, png_bKGD, 4)) - png_handle_bKGD(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - else if (!png_memcmp(chunk_name, png_cHRM, 4)) - png_handle_cHRM(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_gAMA_SUPPORTED - else if (!png_memcmp(chunk_name, png_gAMA, 4)) - png_handle_gAMA(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_hIST_SUPPORTED - else if (!png_memcmp(chunk_name, png_hIST, 4)) - png_handle_hIST(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - else if (!png_memcmp(chunk_name, png_oFFs, 4)) - png_handle_oFFs(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_pCAL_SUPPORTED - else if (!png_memcmp(chunk_name, png_pCAL, 4)) - png_handle_pCAL(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - else if (!png_memcmp(chunk_name, png_sCAL, 4)) - png_handle_sCAL(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - else if (!png_memcmp(chunk_name, png_pHYs, 4)) - png_handle_pHYs(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - else if (!png_memcmp(chunk_name, png_sBIT, 4)) - png_handle_sBIT(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - else if (!png_memcmp(chunk_name, png_sRGB, 4)) - png_handle_sRGB(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - else if (!png_memcmp(chunk_name, png_iCCP, 4)) - png_handle_iCCP(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - else if (!png_memcmp(chunk_name, png_sPLT, 4)) - png_handle_sPLT(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_tEXt, 4)) - png_handle_tEXt(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tIME_SUPPORTED - else if (!png_memcmp(chunk_name, png_tIME, 4)) - png_handle_tIME(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - else if (!png_memcmp(chunk_name, png_tRNS, 4)) - png_handle_tRNS(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_zTXt, 4)) - png_handle_zTXt(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_iTXt, 4)) - png_handle_iTXt(png_ptr, info_ptr, length); -#endif - else - png_handle_unknown(png_ptr, info_ptr, length); - } -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -/* Optional call to update the users info_ptr structure */ -void PNGAPI -png_read_update_info(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_read_update_info"); - - if (png_ptr == NULL) - return; - if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) - png_read_start_row(png_ptr); - else - png_warning(png_ptr, - "Ignoring extra png_read_update_info() call; row buffer not reallocated"); - - png_read_transform_info(png_ptr, info_ptr); -} - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Initialize palette, background, etc, after transformations - * are set, but before any reading takes place. This allows - * the user to obtain a gamma-corrected palette, for example. - * If the user doesn't call this, we will do it ourselves. - */ -void PNGAPI -png_start_read_image(png_structp png_ptr) -{ - png_debug(1, "in png_start_read_image"); - - if (png_ptr == NULL) - return; - if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) - png_read_start_row(png_ptr); -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -void PNGAPI -png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) -{ - PNG_CONST PNG_IDAT; - PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, - 0xff}; - PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}; - int ret; - - if (png_ptr == NULL) - return; - - png_debug2(1, "in png_read_row (row %lu, pass %d)", - png_ptr->row_number, png_ptr->pass); - - if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) - png_read_start_row(png_ptr); - if (png_ptr->row_number == 0 && png_ptr->pass == 0) - { - /* Check for transforms that have been set but were defined out */ -#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED) - if (png_ptr->transformations & PNG_INVERT_MONO) - png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED) - if (png_ptr->transformations & PNG_FILLER) - png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \ - !defined(PNG_READ_PACKSWAP_SUPPORTED) - if (png_ptr->transformations & PNG_PACKSWAP) - png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED) - if (png_ptr->transformations & PNG_PACK) - png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) - if (png_ptr->transformations & PNG_SHIFT) - png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED) - if (png_ptr->transformations & PNG_BGR) - png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined."); -#endif -#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED) - if (png_ptr->transformations & PNG_SWAP_BYTES) - png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined."); -#endif - } - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* If interlaced and we do not need a new row, combine row and return */ - if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) - { - switch (png_ptr->pass) - { - case 0: - if (png_ptr->row_number & 0x07) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 1: - if ((png_ptr->row_number & 0x07) || png_ptr->width < 5) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 2: - if ((png_ptr->row_number & 0x07) != 4) - { - if (dsp_row != NULL && (png_ptr->row_number & 4)) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 3: - if ((png_ptr->row_number & 3) || png_ptr->width < 3) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 4: - if ((png_ptr->row_number & 3) != 2) - { - if (dsp_row != NULL && (png_ptr->row_number & 2)) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 5: - if ((png_ptr->row_number & 1) || png_ptr->width < 2) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - png_read_finish_row(png_ptr); - return; - } - break; - case 6: - if (!(png_ptr->row_number & 1)) - { - png_read_finish_row(png_ptr); - return; - } - break; - } - } -#endif - - if (!(png_ptr->mode & PNG_HAVE_IDAT)) - png_error(png_ptr, "Invalid attempt to read row data"); - - png_ptr->zstream.next_out = png_ptr->row_buf; - png_ptr->zstream.avail_out = - (uInt)(PNG_ROWBYTES(png_ptr->pixel_depth, - png_ptr->iwidth) + 1); - do - { - if (!(png_ptr->zstream.avail_in)) - { - while (!png_ptr->idat_size) - { - png_crc_finish(png_ptr, 0); - - png_ptr->idat_size = png_read_chunk_header(png_ptr); - if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - png_error(png_ptr, "Not enough image data"); - } - png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_in = png_ptr->zbuf; - if (png_ptr->zbuf_size > png_ptr->idat_size) - png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size; - png_crc_read(png_ptr, png_ptr->zbuf, - (png_size_t)png_ptr->zstream.avail_in); - png_ptr->idat_size -= png_ptr->zstream.avail_in; - } - ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH); - if (ret == Z_STREAM_END) - { - if (png_ptr->zstream.avail_out || png_ptr->zstream.avail_in || - png_ptr->idat_size) - png_error(png_ptr, "Extra compressed data"); - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - break; - } - if (ret != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg : - "Decompression error"); - - } while (png_ptr->zstream.avail_out); - - png_ptr->row_info.color_type = png_ptr->color_type; - png_ptr->row_info.width = png_ptr->iwidth; - png_ptr->row_info.channels = png_ptr->channels; - png_ptr->row_info.bit_depth = png_ptr->bit_depth; - png_ptr->row_info.pixel_depth = png_ptr->pixel_depth; - png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth, - png_ptr->row_info.width); - - if (png_ptr->row_buf[0]) - png_read_filter_row(png_ptr, &(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->prev_row + 1, - (int)(png_ptr->row_buf[0])); - - png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf, - png_ptr->rowbytes + 1); - -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) - { - /* Intrapixel differencing */ - png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1); - } -#endif - - - if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) - png_do_read_transformations(png_ptr); - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Blow up interlaced rows to full size */ - if (png_ptr->interlaced && - (png_ptr->transformations & PNG_INTERLACE)) - { - if (png_ptr->pass < 6) - /* Old interface (pre-1.0.9): - * png_do_read_interlace(&(png_ptr->row_info), - * png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations); - */ - png_do_read_interlace(png_ptr); - - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); - if (row != NULL) - png_combine_row(png_ptr, row, - png_pass_mask[png_ptr->pass]); - } - else -#endif - { - if (row != NULL) - png_combine_row(png_ptr, row, 0xff); - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 0xff); - } - png_read_finish_row(png_ptr); - - if (png_ptr->read_row_fn != NULL) - (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass); -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read one or more rows of image data. If the image is interlaced, - * and png_set_interlace_handling() has been called, the rows need to - * contain the contents of the rows from the previous pass. If the - * image has alpha or transparency, and png_handle_alpha()[*] has been - * called, the rows contents must be initialized to the contents of the - * screen. - * - * "row" holds the actual image, and pixels are placed in it - * as they arrive. If the image is displayed after each pass, it will - * appear to "sparkle" in. "display_row" can be used to display a - * "chunky" progressive image, with finer detail added as it becomes - * available. If you do not want this "chunky" display, you may pass - * NULL for display_row. If you do not want the sparkle display, and - * you have not called png_handle_alpha(), you may pass NULL for rows. - * If you have called png_handle_alpha(), and the image has either an - * alpha channel or a transparency chunk, you must provide a buffer for - * rows. In this case, you do not have to provide a display_row buffer - * also, but you may. If the image is not interlaced, or if you have - * not called png_set_interlace_handling(), the display_row buffer will - * be ignored, so pass NULL to it. - * - * [*] png_handle_alpha() does not exist yet, as of this version of libpng - */ - -void PNGAPI -png_read_rows(png_structp png_ptr, png_bytepp row, - png_bytepp display_row, png_uint_32 num_rows) -{ - png_uint_32 i; - png_bytepp rp; - png_bytepp dp; - - png_debug(1, "in png_read_rows"); - - if (png_ptr == NULL) - return; - rp = row; - dp = display_row; - if (rp != NULL && dp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep rptr = *rp++; - png_bytep dptr = *dp++; - - png_read_row(png_ptr, rptr, dptr); - } - else if (rp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep rptr = *rp; - png_read_row(png_ptr, rptr, png_bytep_NULL); - rp++; - } - else if (dp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep dptr = *dp; - png_read_row(png_ptr, png_bytep_NULL, dptr); - dp++; - } -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the entire image. If the image has an alpha channel or a tRNS - * chunk, and you have called png_handle_alpha()[*], you will need to - * initialize the image to the current image that PNG will be overlaying. - * We set the num_rows again here, in case it was incorrectly set in - * png_read_start_row() by a call to png_read_update_info() or - * png_start_read_image() if png_set_interlace_handling() wasn't called - * prior to either of these functions like it should have been. You can - * only call this function once. If you desire to have an image for - * each pass of a interlaced image, use png_read_rows() instead. - * - * [*] png_handle_alpha() does not exist yet, as of this version of libpng - */ -void PNGAPI -png_read_image(png_structp png_ptr, png_bytepp image) -{ - png_uint_32 i, image_height; - int pass, j; - png_bytepp rp; - - png_debug(1, "in png_read_image"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_READ_INTERLACING_SUPPORTED - pass = png_set_interlace_handling(png_ptr); -#else - if (png_ptr->interlaced) - png_error(png_ptr, - "Cannot read interlaced image -- interlace handler disabled."); - pass = 1; -#endif - - - image_height=png_ptr->height; - png_ptr->num_rows = image_height; /* Make sure this is set correctly */ - - for (j = 0; j < pass; j++) - { - rp = image; - for (i = 0; i < image_height; i++) - { - png_read_row(png_ptr, *rp, png_bytep_NULL); - rp++; - } - } -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the end of the PNG file. Will not read past the end of the - * file, will verify the end is accurate, and will read any comments - * or time information at the end of the file, if info is not NULL. - */ -void PNGAPI -png_read_end(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_read_end"); - - if (png_ptr == NULL) - return; - png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */ - - do - { -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IHDR; - PNG_CONST PNG_IDAT; - PNG_CONST PNG_IEND; - PNG_CONST PNG_PLTE; -#ifdef PNG_READ_bKGD_SUPPORTED - PNG_CONST PNG_bKGD; -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - PNG_CONST PNG_cHRM; -#endif -#ifdef PNG_READ_gAMA_SUPPORTED - PNG_CONST PNG_gAMA; -#endif -#ifdef PNG_READ_hIST_SUPPORTED - PNG_CONST PNG_hIST; -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - PNG_CONST PNG_iCCP; -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - PNG_CONST PNG_iTXt; -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - PNG_CONST PNG_oFFs; -#endif -#ifdef PNG_READ_pCAL_SUPPORTED - PNG_CONST PNG_pCAL; -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - PNG_CONST PNG_pHYs; -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - PNG_CONST PNG_sBIT; -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - PNG_CONST PNG_sCAL; -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - PNG_CONST PNG_sPLT; -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - PNG_CONST PNG_sRGB; -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - PNG_CONST PNG_tEXt; -#endif -#ifdef PNG_READ_tIME_SUPPORTED - PNG_CONST PNG_tIME; -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - PNG_CONST PNG_tRNS; -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - PNG_CONST PNG_zTXt; -#endif -#endif /* PNG_USE_LOCAL_ARRAYS */ - png_uint_32 length = png_read_chunk_header(png_ptr); - PNG_CONST png_bytep chunk_name = png_ptr->chunk_name; - - if (!png_memcmp(chunk_name, png_IHDR, 4)) - png_handle_IHDR(png_ptr, info_ptr, length); - else if (!png_memcmp(chunk_name, png_IEND, 4)) - png_handle_IEND(png_ptr, info_ptr, length); -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if (png_handle_as_unknown(png_ptr, chunk_name)) - { - if (!png_memcmp(chunk_name, png_IDAT, 4)) - { - if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT)) - png_error(png_ptr, "Too many IDAT's found"); - } - png_handle_unknown(png_ptr, info_ptr, length); - if (!png_memcmp(chunk_name, png_PLTE, 4)) - png_ptr->mode |= PNG_HAVE_PLTE; - } -#endif - else if (!png_memcmp(chunk_name, png_IDAT, 4)) - { - /* Zero length IDATs are legal after the last IDAT has been - * read, but not after other chunks have been read. - */ - if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT)) - png_error(png_ptr, "Too many IDAT's found"); - png_crc_finish(png_ptr, length); - } - else if (!png_memcmp(chunk_name, png_PLTE, 4)) - png_handle_PLTE(png_ptr, info_ptr, length); -#ifdef PNG_READ_bKGD_SUPPORTED - else if (!png_memcmp(chunk_name, png_bKGD, 4)) - png_handle_bKGD(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - else if (!png_memcmp(chunk_name, png_cHRM, 4)) - png_handle_cHRM(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_gAMA_SUPPORTED - else if (!png_memcmp(chunk_name, png_gAMA, 4)) - png_handle_gAMA(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_hIST_SUPPORTED - else if (!png_memcmp(chunk_name, png_hIST, 4)) - png_handle_hIST(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - else if (!png_memcmp(chunk_name, png_oFFs, 4)) - png_handle_oFFs(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_pCAL_SUPPORTED - else if (!png_memcmp(chunk_name, png_pCAL, 4)) - png_handle_pCAL(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - else if (!png_memcmp(chunk_name, png_sCAL, 4)) - png_handle_sCAL(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - else if (!png_memcmp(chunk_name, png_pHYs, 4)) - png_handle_pHYs(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - else if (!png_memcmp(chunk_name, png_sBIT, 4)) - png_handle_sBIT(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - else if (!png_memcmp(chunk_name, png_sRGB, 4)) - png_handle_sRGB(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - else if (!png_memcmp(chunk_name, png_iCCP, 4)) - png_handle_iCCP(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - else if (!png_memcmp(chunk_name, png_sPLT, 4)) - png_handle_sPLT(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_tEXt, 4)) - png_handle_tEXt(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tIME_SUPPORTED - else if (!png_memcmp(chunk_name, png_tIME, 4)) - png_handle_tIME(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - else if (!png_memcmp(chunk_name, png_tRNS, 4)) - png_handle_tRNS(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_zTXt, 4)) - png_handle_zTXt(png_ptr, info_ptr, length); -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - else if (!png_memcmp(chunk_name, png_iTXt, 4)) - png_handle_iTXt(png_ptr, info_ptr, length); -#endif - else - png_handle_unknown(png_ptr, info_ptr, length); - } while (!(png_ptr->mode & PNG_HAVE_IEND)); -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -/* Free all memory used by the read */ -void PNGAPI -png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, - png_infopp end_info_ptr_ptr) -{ - png_structp png_ptr = NULL; - png_infop info_ptr = NULL, end_info_ptr = NULL; -#ifdef PNG_USER_MEM_SUPPORTED - png_free_ptr free_fn = NULL; - png_voidp mem_ptr = NULL; -#endif - - png_debug(1, "in png_destroy_read_struct"); - - if (png_ptr_ptr != NULL) - png_ptr = *png_ptr_ptr; - if (png_ptr == NULL) - return; - -#ifdef PNG_USER_MEM_SUPPORTED - free_fn = png_ptr->free_fn; - mem_ptr = png_ptr->mem_ptr; -#endif - - if (info_ptr_ptr != NULL) - info_ptr = *info_ptr_ptr; - - if (end_info_ptr_ptr != NULL) - end_info_ptr = *end_info_ptr_ptr; - - png_read_destroy(png_ptr, info_ptr, end_info_ptr); - - if (info_ptr != NULL) - { -#ifdef PNG_TEXT_SUPPORTED - png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, -1); -#endif - -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)info_ptr); -#endif - *info_ptr_ptr = NULL; - } - - if (end_info_ptr != NULL) - { -#ifdef PNG_READ_TEXT_SUPPORTED - png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1); -#endif -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)end_info_ptr); -#endif - *end_info_ptr_ptr = NULL; - } - - if (png_ptr != NULL) - { -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)png_ptr); -#endif - *png_ptr_ptr = NULL; - } -} - -/* Free all memory used by the read (old method) */ -void /* PRIVATE */ -png_read_destroy(png_structp png_ptr, png_infop info_ptr, - png_infop end_info_ptr) -{ -#ifdef PNG_SETJMP_SUPPORTED - jmp_buf tmp_jmp; -#endif - png_error_ptr error_fn; - png_error_ptr warning_fn; - png_voidp error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - png_free_ptr free_fn; -#endif - - png_debug(1, "in png_read_destroy"); - - if (info_ptr != NULL) - png_info_destroy(png_ptr, info_ptr); - - if (end_info_ptr != NULL) - png_info_destroy(png_ptr, end_info_ptr); - - png_free(png_ptr, png_ptr->zbuf); - png_free(png_ptr, png_ptr->big_row_buf); - png_free(png_ptr, png_ptr->prev_row); - png_free(png_ptr, png_ptr->chunkdata); -#ifdef PNG_READ_DITHER_SUPPORTED - png_free(png_ptr, png_ptr->palette_lookup); - png_free(png_ptr, png_ptr->dither_index); -#endif -#ifdef PNG_READ_GAMMA_SUPPORTED - png_free(png_ptr, png_ptr->gamma_table); -#endif -#ifdef PNG_READ_BACKGROUND_SUPPORTED - png_free(png_ptr, png_ptr->gamma_from_1); - png_free(png_ptr, png_ptr->gamma_to_1); -#endif -#ifdef PNG_FREE_ME_SUPPORTED - if (png_ptr->free_me & PNG_FREE_PLTE) - png_zfree(png_ptr, png_ptr->palette); - png_ptr->free_me &= ~PNG_FREE_PLTE; -#else - if (png_ptr->flags & PNG_FLAG_FREE_PLTE) - png_zfree(png_ptr, png_ptr->palette); - png_ptr->flags &= ~PNG_FLAG_FREE_PLTE; -#endif -#if defined(PNG_tRNS_SUPPORTED) || \ - defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) -#ifdef PNG_FREE_ME_SUPPORTED - if (png_ptr->free_me & PNG_FREE_TRNS) - png_free(png_ptr, png_ptr->trans); - png_ptr->free_me &= ~PNG_FREE_TRNS; -#else - if (png_ptr->flags & PNG_FLAG_FREE_TRNS) - png_free(png_ptr, png_ptr->trans); - png_ptr->flags &= ~PNG_FLAG_FREE_TRNS; -#endif -#endif -#ifdef PNG_READ_hIST_SUPPORTED -#ifdef PNG_FREE_ME_SUPPORTED - if (png_ptr->free_me & PNG_FREE_HIST) - png_free(png_ptr, png_ptr->hist); - png_ptr->free_me &= ~PNG_FREE_HIST; -#else - if (png_ptr->flags & PNG_FLAG_FREE_HIST) - png_free(png_ptr, png_ptr->hist); - png_ptr->flags &= ~PNG_FLAG_FREE_HIST; -#endif -#endif -#ifdef PNG_READ_GAMMA_SUPPORTED - if (png_ptr->gamma_16_table != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_table[i]); - } - png_free(png_ptr, png_ptr->gamma_16_table); - } -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if (png_ptr->gamma_16_from_1 != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_from_1[i]); - } - png_free(png_ptr, png_ptr->gamma_16_from_1); - } - if (png_ptr->gamma_16_to_1 != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_to_1[i]); - } - png_free(png_ptr, png_ptr->gamma_16_to_1); - } -#endif -#endif -#ifdef PNG_TIME_RFC1123_SUPPORTED - png_free(png_ptr, png_ptr->time_buffer); -#endif - - inflateEnd(&png_ptr->zstream); -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED - png_free(png_ptr, png_ptr->save_buffer); -#endif - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED -#ifdef PNG_TEXT_SUPPORTED - png_free(png_ptr, png_ptr->current_text); -#endif /* PNG_TEXT_SUPPORTED */ -#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ - - /* Save the important info out of the png_struct, in case it is - * being used again. - */ -#ifdef PNG_SETJMP_SUPPORTED - png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); -#endif - - error_fn = png_ptr->error_fn; - warning_fn = png_ptr->warning_fn; - error_ptr = png_ptr->error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - free_fn = png_ptr->free_fn; -#endif - - png_memset(png_ptr, 0, png_sizeof(png_struct)); - - png_ptr->error_fn = error_fn; - png_ptr->warning_fn = warning_fn; - png_ptr->error_ptr = error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - png_ptr->free_fn = free_fn; -#endif - -#ifdef PNG_SETJMP_SUPPORTED - png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); -#endif - -} - -void PNGAPI -png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn) -{ - if (png_ptr == NULL) - return; - png_ptr->read_row_fn = read_row_fn; -} - - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_read_png(png_structp png_ptr, png_infop info_ptr, - int transforms, - voidp params) -{ - int row; - - if (png_ptr == NULL) - return; -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel from opacity to transparency - */ - if (transforms & PNG_TRANSFORM_INVERT_ALPHA) - png_set_invert_alpha(png_ptr); -#endif - - /* png_read_info() gives us all of the information from the - * PNG file before the first IDAT (image data chunk). - */ - png_read_info(png_ptr, info_ptr); - if (info_ptr->height > PNG_UINT_32_MAX/png_sizeof(png_bytep)) - png_error(png_ptr, "Image is too high to process with png_read_png()"); - - /* -------------- image transformations start here ------------------- */ - -#ifdef PNG_READ_16_TO_8_SUPPORTED - /* Tell libpng to strip 16 bit/color files down to 8 bits per color. - */ - if (transforms & PNG_TRANSFORM_STRIP_16) - png_set_strip_16(png_ptr); -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - /* Strip alpha bytes from the input data without combining with - * the background (not recommended). - */ - if (transforms & PNG_TRANSFORM_STRIP_ALPHA) - png_set_strip_alpha(png_ptr); -#endif - -#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED) - /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single - * byte into separate bytes (useful for paletted and grayscale images). - */ - if (transforms & PNG_TRANSFORM_PACKING) - png_set_packing(png_ptr); -#endif - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - /* Change the order of packed pixels to least significant bit first - * (not useful if you are using png_set_packing). - */ - if (transforms & PNG_TRANSFORM_PACKSWAP) - png_set_packswap(png_ptr); -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED - /* Expand paletted colors into true RGB triplets - * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel - * Expand paletted or RGB images with transparency to full alpha - * channels so the data will be available as RGBA quartets. - */ - if (transforms & PNG_TRANSFORM_EXPAND) - if ((png_ptr->bit_depth < 8) || - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) || - (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))) - png_set_expand(png_ptr); -#endif - - /* We don't handle background color or gamma transformation or dithering. - */ - -#ifdef PNG_READ_INVERT_SUPPORTED - /* Invert monochrome files to have 0 as white and 1 as black - */ - if (transforms & PNG_TRANSFORM_INVERT_MONO) - png_set_invert_mono(png_ptr); -#endif - -#ifdef PNG_READ_SHIFT_SUPPORTED - /* If you want to shift the pixel values from the range [0,255] or - * [0,65535] to the original [0,7] or [0,31], or whatever range the - * colors were originally in: - */ - if ((transforms & PNG_TRANSFORM_SHIFT) - && png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT)) - { - png_color_8p sig_bit; - - png_get_sBIT(png_ptr, info_ptr, &sig_bit); - png_set_shift(png_ptr, sig_bit); - } -#endif - -#ifdef PNG_READ_BGR_SUPPORTED - /* Flip the RGB pixels to BGR (or RGBA to BGRA) - */ - if (transforms & PNG_TRANSFORM_BGR) - png_set_bgr(png_ptr); -#endif - -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED - /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) - */ - if (transforms & PNG_TRANSFORM_SWAP_ALPHA) - png_set_swap_alpha(png_ptr); -#endif - -#ifdef PNG_READ_SWAP_SUPPORTED - /* Swap bytes of 16 bit files to least significant byte first - */ - if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) - png_set_swap(png_ptr); -#endif - -/* Added at libpng-1.2.41 */ -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel from opacity to transparency - */ - if (transforms & PNG_TRANSFORM_INVERT_ALPHA) - png_set_invert_alpha(png_ptr); -#endif - -/* Added at libpng-1.2.41 */ -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* Expand grayscale image to RGB - */ - if (transforms & PNG_TRANSFORM_GRAY_TO_RGB) - png_set_gray_to_rgb(png_ptr); -#endif - - /* We don't handle adding filler bytes */ - - /* Optional call to gamma correct and add the background to the palette - * and update info structure. REQUIRED if you are expecting libpng to - * update the palette for you (i.e., you selected such a transform above). - */ - png_read_update_info(png_ptr, info_ptr); - - /* -------------- image transformations end here ------------------- */ - -#ifdef PNG_FREE_ME_SUPPORTED - png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); -#endif - if (info_ptr->row_pointers == NULL) - { - info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr, - info_ptr->height * png_sizeof(png_bytep)); - png_memset(info_ptr->row_pointers, 0, info_ptr->height - * png_sizeof(png_bytep)); - -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_ROWS; -#endif - - for (row = 0; row < (int)info_ptr->height; row++) - info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr, - png_get_rowbytes(png_ptr, info_ptr)); - } - - png_read_image(png_ptr, info_ptr->row_pointers); - info_ptr->valid |= PNG_INFO_IDAT; - - /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ - png_read_end(png_ptr, info_ptr); - - transforms = transforms; /* Quiet compiler warnings */ - params = params; - -} -#endif /* PNG_INFO_IMAGE_SUPPORTED */ -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ -#endif /* PNG_READ_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrio.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrio.c deleted file mode 100644 index 6978682..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrio.c +++ /dev/null @@ -1,180 +0,0 @@ - -/* pngrio.c - functions for data input - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all input. Users who need - * special handling are expected to write a function that has the same - * arguments as this and performs a similar function, but that possibly - * has a different input method. Note that you shouldn't change this - * function, but rather write a replacement function and then make - * libpng use it at run time with png_set_read_fn(...). - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_READ_SUPPORTED - -/* Read the data from whatever input you are using. The default routine - * reads from a file pointer. Note that this routine sometimes gets called - * with very small lengths, so you should implement some kind of simple - * buffering if you are using unbuffered reads. This should never be asked - * to read more then 64K on a 16 bit machine. - */ -void /* PRIVATE */ -png_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_debug1(4, "reading %d bytes", (int)length); - - if (png_ptr->read_data_fn != NULL) - (*(png_ptr->read_data_fn))(png_ptr, data, length); - else - png_error(png_ptr, "Call to NULL read function"); -} - -#ifdef PNG_STDIO_SUPPORTED -/* This is the function that does the actual reading of data. If you are - * not reading from a standard C stream, you should create a replacement - * read_data function and use it at run time with png_set_read_fn(), rather - * than changing the library. - */ -#ifndef USE_FAR_KEYWORD -void PNGAPI -png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check; - - if (png_ptr == NULL) - return; - /* fread() returns 0 on error, so it is OK to store this in a png_size_t - * instead of an int, which is what fread() actually returns. - */ -#ifdef _WIN32_WCE - if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) ) - check = 0; -#else - check = (png_size_t)fread(data, (png_size_t)1, length, - (png_FILE_p)png_ptr->io_ptr); -#endif - - if (check != length) - png_error(png_ptr, "Read Error"); -} -#else -/* This is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -static void PNGAPI -png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - int check; - png_byte *n_data; - png_FILE_p io_ptr; - - if (png_ptr == NULL) - return; - /* Check if data really is near. If so, use usual code. */ - n_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); - if ((png_bytep)n_data == data) - { -#ifdef _WIN32_WCE - if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, - NULL) ) - check = 0; -#else - check = fread(n_data, 1, length, io_ptr); -#endif - } - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t read, remaining, err; - check = 0; - remaining = length; - do - { - read = MIN(NEAR_BUF_SIZE, remaining); -#ifdef _WIN32_WCE - if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) ) - err = 0; -#else - err = fread(buf, (png_size_t)1, read, io_ptr); -#endif - png_memcpy(data, buf, read); /* copy far buffer to near buffer */ - if (err != read) - break; - else - check += err; - data += read; - remaining -= read; - } - while (remaining != 0); - } - if ((png_uint_32)check != (png_uint_32)length) - png_error(png_ptr, "read Error"); -} -#endif -#endif - -/* This function allows the application to supply a new input function - * for libpng if standard C streams aren't being used. - * - * This function takes as its arguments: - * png_ptr - pointer to a png input data structure - * io_ptr - pointer to user supplied structure containing info about - * the input functions. May be NULL. - * read_data_fn - pointer to a new input function that takes as its - * arguments a pointer to a png_struct, a pointer to - * a location where input data can be stored, and a 32-bit - * unsigned int that is the number of bytes to be read. - * To exit and output any fatal error messages the new write - * function should call png_error(png_ptr, "Error msg"). - * May be NULL, in which case libpng's default function will - * be used. - */ -void PNGAPI -png_set_read_fn(png_structp png_ptr, png_voidp io_ptr, - png_rw_ptr read_data_fn) -{ - if (png_ptr == NULL) - return; - png_ptr->io_ptr = io_ptr; - -#ifdef PNG_STDIO_SUPPORTED - if (read_data_fn != NULL) - png_ptr->read_data_fn = read_data_fn; - else - png_ptr->read_data_fn = png_default_read_data; -#else - png_ptr->read_data_fn = read_data_fn; -#endif - - /* It is an error to write to a read device */ - if (png_ptr->write_data_fn != NULL) - { - png_ptr->write_data_fn = NULL; - png_warning(png_ptr, - "It's an error to set both read_data_fn and write_data_fn in the "); - png_warning(png_ptr, - "same structure. Resetting write_data_fn to NULL."); - } - -#ifdef PNG_WRITE_FLUSH_SUPPORTED - png_ptr->output_flush_fn = NULL; -#endif -} -#endif /* PNG_READ_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrtran.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrtran.c deleted file mode 100644 index af1aa8e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrtran.c +++ /dev/null @@ -1,4457 +0,0 @@ - -/* pngrtran.c - transforms the data in a row for PNG readers - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains functions optionally called by an application - * in order to tell libpng how to handle data when reading a PNG. - * Transformations that are used in both reading and writing are - * in pngtrans.c. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_READ_SUPPORTED - -/* Set the action on getting a CRC error for an ancillary or critical chunk. */ -void PNGAPI -png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action) -{ - png_debug(1, "in png_set_crc_action"); - - if (png_ptr == NULL) - return; - - /* Tell libpng how we react to CRC errors in critical chunks */ - switch (crit_action) - { - case PNG_CRC_NO_CHANGE: /* Leave setting as is */ - break; - - case PNG_CRC_WARN_USE: /* Warn/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE; - break; - - case PNG_CRC_QUIET_USE: /* Quiet/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE | - PNG_FLAG_CRC_CRITICAL_IGNORE; - break; - - case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */ - png_warning(png_ptr, - "Can't discard critical data on CRC error."); - case PNG_CRC_ERROR_QUIT: /* Error/quit */ - - case PNG_CRC_DEFAULT: - default: - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - break; - } - - /* Tell libpng how we react to CRC errors in ancillary chunks */ - switch (ancil_action) - { - case PNG_CRC_NO_CHANGE: /* Leave setting as is */ - break; - - case PNG_CRC_WARN_USE: /* Warn/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE; - break; - - case PNG_CRC_QUIET_USE: /* Quiet/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE | - PNG_FLAG_CRC_ANCILLARY_NOWARN; - break; - - case PNG_CRC_ERROR_QUIT: /* Error/quit */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN; - break; - - case PNG_CRC_WARN_DISCARD: /* Warn/discard data */ - - case PNG_CRC_DEFAULT: - default: - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - break; - } -} - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \ - defined(PNG_FLOATING_POINT_SUPPORTED) -/* Handle alpha and tRNS via a background color */ -void PNGAPI -png_set_background(png_structp png_ptr, - png_color_16p background_color, int background_gamma_code, - int need_expand, double background_gamma) -{ - png_debug(1, "in png_set_background"); - - if (png_ptr == NULL) - return; - if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN) - { - png_warning(png_ptr, "Application must supply a known background gamma"); - return; - } - - png_ptr->transformations |= PNG_BACKGROUND; - png_memcpy(&(png_ptr->background), background_color, - png_sizeof(png_color_16)); - png_ptr->background_gamma = (float)background_gamma; - png_ptr->background_gamma_type = (png_byte)(background_gamma_code); - png_ptr->transformations |= (need_expand ? PNG_BACKGROUND_EXPAND : 0); -} -#endif - -#ifdef PNG_READ_16_TO_8_SUPPORTED -/* Strip 16 bit depth files to 8 bit depth */ -void PNGAPI -png_set_strip_16(png_structp png_ptr) -{ - png_debug(1, "in png_set_strip_16"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_16_TO_8; -} -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED -void PNGAPI -png_set_strip_alpha(png_structp png_ptr) -{ - png_debug(1, "in png_set_strip_alpha"); - - if (png_ptr == NULL) - return; - png_ptr->flags |= PNG_FLAG_STRIP_ALPHA; -} -#endif - -#ifdef PNG_READ_DITHER_SUPPORTED -/* Dither file to 8 bit. Supply a palette, the current number - * of elements in the palette, the maximum number of elements - * allowed, and a histogram if possible. If the current number - * of colors is greater then the maximum number, the palette will be - * modified to fit in the maximum number. "full_dither" indicates - * whether we need a dithering cube set up for RGB images, or if we - * simply are reducing the number of colors in a paletted image. - */ - -typedef struct png_dsort_struct -{ - struct png_dsort_struct FAR * next; - png_byte left; - png_byte right; -} png_dsort; -typedef png_dsort FAR * png_dsortp; -typedef png_dsort FAR * FAR * png_dsortpp; - -void PNGAPI -png_set_dither(png_structp png_ptr, png_colorp palette, - int num_palette, int maximum_colors, png_uint_16p histogram, - int full_dither) -{ - png_debug(1, "in png_set_dither"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_DITHER; - - if (!full_dither) - { - int i; - - png_ptr->dither_index = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(num_palette * png_sizeof(png_byte))); - for (i = 0; i < num_palette; i++) - png_ptr->dither_index[i] = (png_byte)i; - } - - if (num_palette > maximum_colors) - { - if (histogram != NULL) - { - /* This is easy enough, just throw out the least used colors. - * Perhaps not the best solution, but good enough. - */ - - int i; - - /* Initialize an array to sort colors */ - png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(num_palette * png_sizeof(png_byte))); - - /* Initialize the dither_sort array */ - for (i = 0; i < num_palette; i++) - png_ptr->dither_sort[i] = (png_byte)i; - - /* Find the least used palette entries by starting a - * bubble sort, and running it until we have sorted - * out enough colors. Note that we don't care about - * sorting all the colors, just finding which are - * least used. - */ - - for (i = num_palette - 1; i >= maximum_colors; i--) - { - int done; /* To stop early if the list is pre-sorted */ - int j; - - done = 1; - for (j = 0; j < i; j++) - { - if (histogram[png_ptr->dither_sort[j]] - < histogram[png_ptr->dither_sort[j + 1]]) - { - png_byte t; - - t = png_ptr->dither_sort[j]; - png_ptr->dither_sort[j] = png_ptr->dither_sort[j + 1]; - png_ptr->dither_sort[j + 1] = t; - done = 0; - } - } - if (done) - break; - } - - /* Swap the palette around, and set up a table, if necessary */ - if (full_dither) - { - int j = num_palette; - - /* Put all the useful colors within the max, but don't - * move the others. - */ - for (i = 0; i < maximum_colors; i++) - { - if ((int)png_ptr->dither_sort[i] >= maximum_colors) - { - do - j--; - while ((int)png_ptr->dither_sort[j] >= maximum_colors); - palette[i] = palette[j]; - } - } - } - else - { - int j = num_palette; - - /* Move all the used colors inside the max limit, and - * develop a translation table. - */ - for (i = 0; i < maximum_colors; i++) - { - /* Only move the colors we need to */ - if ((int)png_ptr->dither_sort[i] >= maximum_colors) - { - png_color tmp_color; - - do - j--; - while ((int)png_ptr->dither_sort[j] >= maximum_colors); - - tmp_color = palette[j]; - palette[j] = palette[i]; - palette[i] = tmp_color; - /* Indicate where the color went */ - png_ptr->dither_index[j] = (png_byte)i; - png_ptr->dither_index[i] = (png_byte)j; - } - } - - /* Find closest color for those colors we are not using */ - for (i = 0; i < num_palette; i++) - { - if ((int)png_ptr->dither_index[i] >= maximum_colors) - { - int min_d, k, min_k, d_index; - - /* Find the closest color to one we threw out */ - d_index = png_ptr->dither_index[i]; - min_d = PNG_COLOR_DIST(palette[d_index], palette[0]); - for (k = 1, min_k = 0; k < maximum_colors; k++) - { - int d; - - d = PNG_COLOR_DIST(palette[d_index], palette[k]); - - if (d < min_d) - { - min_d = d; - min_k = k; - } - } - /* Point to closest color */ - png_ptr->dither_index[i] = (png_byte)min_k; - } - } - } - png_free(png_ptr, png_ptr->dither_sort); - png_ptr->dither_sort = NULL; - } - else - { - /* This is much harder to do simply (and quickly). Perhaps - * we need to go through a median cut routine, but those - * don't always behave themselves with only a few colors - * as input. So we will just find the closest two colors, - * and throw out one of them (chosen somewhat randomly). - * [We don't understand this at all, so if someone wants to - * work on improving it, be our guest - AED, GRP] - */ - int i; - int max_d; - int num_new_palette; - png_dsortp t; - png_dsortpp hash; - - t = NULL; - - /* Initialize palette index arrays */ - png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(num_palette * png_sizeof(png_byte))); - png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(num_palette * png_sizeof(png_byte))); - - /* Initialize the sort array */ - for (i = 0; i < num_palette; i++) - { - png_ptr->index_to_palette[i] = (png_byte)i; - png_ptr->palette_to_index[i] = (png_byte)i; - } - - hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 * - png_sizeof(png_dsortp))); - - num_new_palette = num_palette; - - /* Initial wild guess at how far apart the farthest pixel - * pair we will be eliminating will be. Larger - * numbers mean more areas will be allocated, Smaller - * numbers run the risk of not saving enough data, and - * having to do this all over again. - * - * I have not done extensive checking on this number. - */ - max_d = 96; - - while (num_new_palette > maximum_colors) - { - for (i = 0; i < num_new_palette - 1; i++) - { - int j; - - for (j = i + 1; j < num_new_palette; j++) - { - int d; - - d = PNG_COLOR_DIST(palette[i], palette[j]); - - if (d <= max_d) - { - - t = (png_dsortp)png_malloc_warn(png_ptr, - (png_uint_32)(png_sizeof(png_dsort))); - if (t == NULL) - break; - t->next = hash[d]; - t->left = (png_byte)i; - t->right = (png_byte)j; - hash[d] = t; - } - } - if (t == NULL) - break; - } - - if (t != NULL) - for (i = 0; i <= max_d; i++) - { - if (hash[i] != NULL) - { - png_dsortp p; - - for (p = hash[i]; p; p = p->next) - { - if ((int)png_ptr->index_to_palette[p->left] - < num_new_palette && - (int)png_ptr->index_to_palette[p->right] - < num_new_palette) - { - int j, next_j; - - if (num_new_palette & 0x01) - { - j = p->left; - next_j = p->right; - } - else - { - j = p->right; - next_j = p->left; - } - - num_new_palette--; - palette[png_ptr->index_to_palette[j]] - = palette[num_new_palette]; - if (!full_dither) - { - int k; - - for (k = 0; k < num_palette; k++) - { - if (png_ptr->dither_index[k] == - png_ptr->index_to_palette[j]) - png_ptr->dither_index[k] = - png_ptr->index_to_palette[next_j]; - if ((int)png_ptr->dither_index[k] == - num_new_palette) - png_ptr->dither_index[k] = - png_ptr->index_to_palette[j]; - } - } - - png_ptr->index_to_palette[png_ptr->palette_to_index - [num_new_palette]] = png_ptr->index_to_palette[j]; - png_ptr->palette_to_index[png_ptr->index_to_palette[j]] - = png_ptr->palette_to_index[num_new_palette]; - - png_ptr->index_to_palette[j] = - (png_byte)num_new_palette; - png_ptr->palette_to_index[num_new_palette] = - (png_byte)j; - } - if (num_new_palette <= maximum_colors) - break; - } - if (num_new_palette <= maximum_colors) - break; - } - } - - for (i = 0; i < 769; i++) - { - if (hash[i] != NULL) - { - png_dsortp p = hash[i]; - while (p) - { - t = p->next; - png_free(png_ptr, p); - p = t; - } - } - hash[i] = 0; - } - max_d += 96; - } - png_free(png_ptr, hash); - png_free(png_ptr, png_ptr->palette_to_index); - png_free(png_ptr, png_ptr->index_to_palette); - png_ptr->palette_to_index = NULL; - png_ptr->index_to_palette = NULL; - } - num_palette = maximum_colors; - } - if (png_ptr->palette == NULL) - { - png_ptr->palette = palette; - } - png_ptr->num_palette = (png_uint_16)num_palette; - - if (full_dither) - { - int i; - png_bytep distance; - int total_bits = PNG_DITHER_RED_BITS + PNG_DITHER_GREEN_BITS + - PNG_DITHER_BLUE_BITS; - int num_red = (1 << PNG_DITHER_RED_BITS); - int num_green = (1 << PNG_DITHER_GREEN_BITS); - int num_blue = (1 << PNG_DITHER_BLUE_BITS); - png_size_t num_entries = ((png_size_t)1 << total_bits); - - png_ptr->palette_lookup = (png_bytep )png_calloc(png_ptr, - (png_uint_32)(num_entries * png_sizeof(png_byte))); - - distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries * - png_sizeof(png_byte))); - png_memset(distance, 0xff, num_entries * png_sizeof(png_byte)); - - for (i = 0; i < num_palette; i++) - { - int ir, ig, ib; - int r = (palette[i].red >> (8 - PNG_DITHER_RED_BITS)); - int g = (palette[i].green >> (8 - PNG_DITHER_GREEN_BITS)); - int b = (palette[i].blue >> (8 - PNG_DITHER_BLUE_BITS)); - - for (ir = 0; ir < num_red; ir++) - { - /* int dr = abs(ir - r); */ - int dr = ((ir > r) ? ir - r : r - ir); - int index_r = (ir << (PNG_DITHER_BLUE_BITS + - PNG_DITHER_GREEN_BITS)); - - for (ig = 0; ig < num_green; ig++) - { - /* int dg = abs(ig - g); */ - int dg = ((ig > g) ? ig - g : g - ig); - int dt = dr + dg; - int dm = ((dr > dg) ? dr : dg); - int index_g = index_r | (ig << PNG_DITHER_BLUE_BITS); - - for (ib = 0; ib < num_blue; ib++) - { - int d_index = index_g | ib; - /* int db = abs(ib - b); */ - int db = ((ib > b) ? ib - b : b - ib); - int dmax = ((dm > db) ? dm : db); - int d = dmax + dt + db; - - if (d < (int)distance[d_index]) - { - distance[d_index] = (png_byte)d; - png_ptr->palette_lookup[d_index] = (png_byte)i; - } - } - } - } - } - - png_free(png_ptr, distance); - } -} -#endif - -#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED) -/* Transform the image from the file_gamma to the screen_gamma. We - * only do transformations on images where the file_gamma and screen_gamma - * are not close reciprocals, otherwise it slows things down slightly, and - * also needlessly introduces small errors. - * - * We will turn off gamma transformation later if no semitransparent entries - * are present in the tRNS array for palette images. We can't do it here - * because we don't necessarily have the tRNS chunk yet. - */ -void PNGAPI -png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma) -{ - png_debug(1, "in png_set_gamma"); - - if (png_ptr == NULL) - return; - - if ((fabs(scrn_gamma * file_gamma - 1.0) > PNG_GAMMA_THRESHOLD) || - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) || - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) - png_ptr->transformations |= PNG_GAMMA; - png_ptr->gamma = (float)file_gamma; - png_ptr->screen_gamma = (float)scrn_gamma; -} -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED -/* Expand paletted images to RGB, expand grayscale images of - * less than 8-bit depth to 8-bit depth, and expand tRNS chunks - * to alpha channels. - */ -void PNGAPI -png_set_expand(png_structp png_ptr) -{ - png_debug(1, "in png_set_expand"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); - png_ptr->flags &= ~PNG_FLAG_ROW_INIT; -} - -/* GRR 19990627: the following three functions currently are identical - * to png_set_expand(). However, it is entirely reasonable that someone - * might wish to expand an indexed image to RGB but *not* expand a single, - * fully transparent palette entry to a full alpha channel--perhaps instead - * convert tRNS to the grayscale/RGB format (16-bit RGB value), or replace - * the transparent color with a particular RGB value, or drop tRNS entirely. - * IOW, a future version of the library may make the transformations flag - * a bit more fine-grained, with separate bits for each of these three - * functions. - * - * More to the point, these functions make it obvious what libpng will be - * doing, whereas "expand" can (and does) mean any number of things. - * - * GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified - * to expand only the sample depth but not to expand the tRNS to alpha - * and its name was changed to png_set_expand_gray_1_2_4_to_8(). - */ - -/* Expand paletted images to RGB. */ -void PNGAPI -png_set_palette_to_rgb(png_structp png_ptr) -{ - png_debug(1, "in png_set_palette_to_rgb"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); - png_ptr->flags &= ~PNG_FLAG_ROW_INIT; -} - -#ifndef PNG_1_0_X -/* Expand grayscale images of less than 8-bit depth to 8 bits. */ -void PNGAPI -png_set_expand_gray_1_2_4_to_8(png_structp png_ptr) -{ - png_debug(1, "in png_set_expand_gray_1_2_4_to_8"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_EXPAND; - png_ptr->flags &= ~PNG_FLAG_ROW_INIT; -} -#endif - -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -/* Expand grayscale images of less than 8-bit depth to 8 bits. */ -/* Deprecated as of libpng-1.2.9 */ -void PNGAPI -png_set_gray_1_2_4_to_8(png_structp png_ptr) -{ - png_debug(1, "in png_set_gray_1_2_4_to_8"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); -} -#endif - - -/* Expand tRNS chunks to alpha channels. */ -void PNGAPI -png_set_tRNS_to_alpha(png_structp png_ptr) -{ - png_debug(1, "in png_set_tRNS_to_alpha"); - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); - png_ptr->flags &= ~PNG_FLAG_ROW_INIT; -} -#endif /* defined(PNG_READ_EXPAND_SUPPORTED) */ - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -void PNGAPI -png_set_gray_to_rgb(png_structp png_ptr) -{ - png_debug(1, "in png_set_gray_to_rgb"); - - png_ptr->transformations |= PNG_GRAY_TO_RGB; - png_ptr->flags &= ~PNG_FLAG_ROW_INIT; -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -/* Convert a RGB image to a grayscale of the same width. This allows us, - * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image. - */ - -void PNGAPI -png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red, - double green) -{ - int red_fixed = (int)((float)red*100000.0 + 0.5); - int green_fixed = (int)((float)green*100000.0 + 0.5); - if (png_ptr == NULL) - return; - png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed); -} -#endif - -void PNGAPI -png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action, - png_fixed_point red, png_fixed_point green) -{ - png_debug(1, "in png_set_rgb_to_gray"); - - if (png_ptr == NULL) - return; - - switch(error_action) - { - case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY; - break; - - case 2: png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN; - break; - - case 3: png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR; - } - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) -#ifdef PNG_READ_EXPAND_SUPPORTED - png_ptr->transformations |= PNG_EXPAND; -#else - { - png_warning(png_ptr, - "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED."); - png_ptr->transformations &= ~PNG_RGB_TO_GRAY; - } -#endif - { - png_uint_16 red_int, green_int; - if (red < 0 || green < 0) - { - red_int = 6968; /* .212671 * 32768 + .5 */ - green_int = 23434; /* .715160 * 32768 + .5 */ - } - else if (red + green < 100000L) - { - red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L); - green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L); - } - else - { - png_warning(png_ptr, "ignoring out of range rgb_to_gray coefficients"); - red_int = 6968; - green_int = 23434; - } - png_ptr->rgb_to_gray_red_coeff = red_int; - png_ptr->rgb_to_gray_green_coeff = green_int; - png_ptr->rgb_to_gray_blue_coeff = - (png_uint_16)(32768 - red_int - green_int); - } -} -#endif - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_LEGACY_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -void PNGAPI -png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr - read_user_transform_fn) -{ - png_debug(1, "in png_set_read_user_transform_fn"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - png_ptr->transformations |= PNG_USER_TRANSFORM; - png_ptr->read_user_transform_fn = read_user_transform_fn; -#endif -#ifdef PNG_LEGACY_SUPPORTED - if (read_user_transform_fn) - png_warning(png_ptr, - "This version of libpng does not support user transforms"); -#endif -} -#endif - -/* Initialize everything needed for the read. This includes modifying - * the palette. - */ -void /* PRIVATE */ -png_init_read_transformations(png_structp png_ptr) -{ - png_debug(1, "in png_init_read_transformations"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (png_ptr != NULL) -#endif - { -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_SHIFT_SUPPORTED) || \ - defined(PNG_READ_GAMMA_SUPPORTED) - int color_type = png_ptr->color_type; -#endif - -#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED) - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* Detect gray background and attempt to enable optimization - * for gray --> RGB case - * - * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or - * RGB_ALPHA (in which case need_expand is superfluous anyway), the - * background color might actually be gray yet not be flagged as such. - * This is not a problem for the current code, which uses - * PNG_BACKGROUND_IS_GRAY only to decide when to do the - * png_do_gray_to_rgb() transformation. - */ - if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) && - !(color_type & PNG_COLOR_MASK_COLOR)) - { - png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; - } else if ((png_ptr->transformations & PNG_BACKGROUND) && - !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) && - (png_ptr->transformations & PNG_GRAY_TO_RGB) && - png_ptr->background.red == png_ptr->background.green && - png_ptr->background.red == png_ptr->background.blue) - { - png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; - png_ptr->background.gray = png_ptr->background.red; - } -#endif - - if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) && - (png_ptr->transformations & PNG_EXPAND)) - { - if (!(color_type & PNG_COLOR_MASK_COLOR)) /* i.e., GRAY or GRAY_ALPHA */ - { - /* Expand background and tRNS chunks */ - switch (png_ptr->bit_depth) - { - case 1: - png_ptr->background.gray *= (png_uint_16)0xff; - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - if (!(png_ptr->transformations & PNG_EXPAND_tRNS)) - { - png_ptr->trans_values.gray *= (png_uint_16)0xff; - png_ptr->trans_values.red = png_ptr->trans_values.green - = png_ptr->trans_values.blue = png_ptr->trans_values.gray; - } - break; - - case 2: - png_ptr->background.gray *= (png_uint_16)0x55; - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - if (!(png_ptr->transformations & PNG_EXPAND_tRNS)) - { - png_ptr->trans_values.gray *= (png_uint_16)0x55; - png_ptr->trans_values.red = png_ptr->trans_values.green - = png_ptr->trans_values.blue = png_ptr->trans_values.gray; - } - break; - - case 4: - png_ptr->background.gray *= (png_uint_16)0x11; - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - if (!(png_ptr->transformations & PNG_EXPAND_tRNS)) - { - png_ptr->trans_values.gray *= (png_uint_16)0x11; - png_ptr->trans_values.red = png_ptr->trans_values.green - = png_ptr->trans_values.blue = png_ptr->trans_values.gray; - } - break; - - case 8: - - case 16: - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - break; - } - } - else if (color_type == PNG_COLOR_TYPE_PALETTE) - { - png_ptr->background.red = - png_ptr->palette[png_ptr->background.index].red; - png_ptr->background.green = - png_ptr->palette[png_ptr->background.index].green; - png_ptr->background.blue = - png_ptr->palette[png_ptr->background.index].blue; - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - if (png_ptr->transformations & PNG_INVERT_ALPHA) - { -#ifdef PNG_READ_EXPAND_SUPPORTED - if (!(png_ptr->transformations & PNG_EXPAND_tRNS)) -#endif - { - /* Invert the alpha channel (in tRNS) unless the pixels are - * going to be expanded, in which case leave it for later - */ - int i, istop; - istop=(int)png_ptr->num_trans; - for (i=0; i<istop; i++) - png_ptr->trans[i] = (png_byte)(255 - png_ptr->trans[i]); - } - } -#endif - - } - } -#endif - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED) - png_ptr->background_1 = png_ptr->background; -#endif -#if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED) - - if ((color_type == PNG_COLOR_TYPE_PALETTE && png_ptr->num_trans != 0) - && (fabs(png_ptr->screen_gamma * png_ptr->gamma - 1.0) - < PNG_GAMMA_THRESHOLD)) - { - int i, k; - k=0; - for (i=0; i<png_ptr->num_trans; i++) - { - if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff) - k=1; /* Partial transparency is present */ - } - if (k == 0) - png_ptr->transformations &= ~PNG_GAMMA; - } - - if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) && - png_ptr->gamma != 0.0) - { - png_build_gamma_table(png_ptr); - -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if (png_ptr->transformations & PNG_BACKGROUND) - { - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - /* Could skip if no transparency */ - png_color back, back_1; - png_colorp palette = png_ptr->palette; - int num_palette = png_ptr->num_palette; - int i; - if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE) - { - back.red = png_ptr->gamma_table[png_ptr->background.red]; - back.green = png_ptr->gamma_table[png_ptr->background.green]; - back.blue = png_ptr->gamma_table[png_ptr->background.blue]; - - back_1.red = png_ptr->gamma_to_1[png_ptr->background.red]; - back_1.green = png_ptr->gamma_to_1[png_ptr->background.green]; - back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue]; - } - else - { - double g, gs; - - switch (png_ptr->background_gamma_type) - { - case PNG_BACKGROUND_GAMMA_SCREEN: - g = (png_ptr->screen_gamma); - gs = 1.0; - break; - - case PNG_BACKGROUND_GAMMA_FILE: - g = 1.0 / (png_ptr->gamma); - gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); - break; - - case PNG_BACKGROUND_GAMMA_UNIQUE: - g = 1.0 / (png_ptr->background_gamma); - gs = 1.0 / (png_ptr->background_gamma * - png_ptr->screen_gamma); - break; - default: - g = 1.0; /* back_1 */ - gs = 1.0; /* back */ - } - - if ( fabs(gs - 1.0) < PNG_GAMMA_THRESHOLD) - { - back.red = (png_byte)png_ptr->background.red; - back.green = (png_byte)png_ptr->background.green; - back.blue = (png_byte)png_ptr->background.blue; - } - else - { - back.red = (png_byte)(pow( - (double)png_ptr->background.red/255, gs) * 255.0 + .5); - back.green = (png_byte)(pow( - (double)png_ptr->background.green/255, gs) * 255.0 - + .5); - back.blue = (png_byte)(pow( - (double)png_ptr->background.blue/255, gs) * 255.0 + .5); - } - - back_1.red = (png_byte)(pow( - (double)png_ptr->background.red/255, g) * 255.0 + .5); - back_1.green = (png_byte)(pow( - (double)png_ptr->background.green/255, g) * 255.0 + .5); - back_1.blue = (png_byte)(pow( - (double)png_ptr->background.blue/255, g) * 255.0 + .5); - } - for (i = 0; i < num_palette; i++) - { - if (i < (int)png_ptr->num_trans && png_ptr->trans[i] != 0xff) - { - if (png_ptr->trans[i] == 0) - { - palette[i] = back; - } - else /* if (png_ptr->trans[i] != 0xff) */ - { - png_byte v, w; - - v = png_ptr->gamma_to_1[palette[i].red]; - png_composite(w, v, png_ptr->trans[i], back_1.red); - palette[i].red = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].green]; - png_composite(w, v, png_ptr->trans[i], back_1.green); - palette[i].green = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].blue]; - png_composite(w, v, png_ptr->trans[i], back_1.blue); - palette[i].blue = png_ptr->gamma_from_1[w]; - } - } - else - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - } - /* Prevent the transformations being done again, and make sure - * that the now spurious alpha channel is stripped - the code - * has just reduced background composition and gamma correction - * to a simple alpha channel strip. - */ - png_ptr->transformations &= ~PNG_BACKGROUND; - png_ptr->transformations &= ~PNG_GAMMA; - png_ptr->transformations |= PNG_STRIP_ALPHA; - } - /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */ - else - /* color_type != PNG_COLOR_TYPE_PALETTE */ - { - double m = (double)(((png_uint_32)1 << png_ptr->bit_depth) - 1); - double g = 1.0; - double gs = 1.0; - - switch (png_ptr->background_gamma_type) - { - case PNG_BACKGROUND_GAMMA_SCREEN: - g = (png_ptr->screen_gamma); - gs = 1.0; - break; - - case PNG_BACKGROUND_GAMMA_FILE: - g = 1.0 / (png_ptr->gamma); - gs = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); - break; - - case PNG_BACKGROUND_GAMMA_UNIQUE: - g = 1.0 / (png_ptr->background_gamma); - gs = 1.0 / (png_ptr->background_gamma * - png_ptr->screen_gamma); - break; - } - - png_ptr->background_1.gray = (png_uint_16)(pow( - (double)png_ptr->background.gray / m, g) * m + .5); - png_ptr->background.gray = (png_uint_16)(pow( - (double)png_ptr->background.gray / m, gs) * m + .5); - - if ((png_ptr->background.red != png_ptr->background.green) || - (png_ptr->background.red != png_ptr->background.blue) || - (png_ptr->background.red != png_ptr->background.gray)) - { - /* RGB or RGBA with color background */ - png_ptr->background_1.red = (png_uint_16)(pow( - (double)png_ptr->background.red / m, g) * m + .5); - png_ptr->background_1.green = (png_uint_16)(pow( - (double)png_ptr->background.green / m, g) * m + .5); - png_ptr->background_1.blue = (png_uint_16)(pow( - (double)png_ptr->background.blue / m, g) * m + .5); - png_ptr->background.red = (png_uint_16)(pow( - (double)png_ptr->background.red / m, gs) * m + .5); - png_ptr->background.green = (png_uint_16)(pow( - (double)png_ptr->background.green / m, gs) * m + .5); - png_ptr->background.blue = (png_uint_16)(pow( - (double)png_ptr->background.blue / m, gs) * m + .5); - } - else - { - /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */ - png_ptr->background_1.red = png_ptr->background_1.green - = png_ptr->background_1.blue = png_ptr->background_1.gray; - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - } - } - } - else - /* Transformation does not include PNG_BACKGROUND */ -#endif /* PNG_READ_BACKGROUND_SUPPORTED */ - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - png_colorp palette = png_ptr->palette; - int num_palette = png_ptr->num_palette; - int i; - - for (i = 0; i < num_palette; i++) - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - - /* Done the gamma correction. */ - png_ptr->transformations &= ~PNG_GAMMA; - } - } -#ifdef PNG_READ_BACKGROUND_SUPPORTED - else -#endif -#endif /* PNG_READ_GAMMA_SUPPORTED && PNG_FLOATING_POINT_SUPPORTED */ -#ifdef PNG_READ_BACKGROUND_SUPPORTED - /* No GAMMA transformation */ - if ((png_ptr->transformations & PNG_BACKGROUND) && - (color_type == PNG_COLOR_TYPE_PALETTE)) - { - int i; - int istop = (int)png_ptr->num_trans; - png_color back; - png_colorp palette = png_ptr->palette; - - back.red = (png_byte)png_ptr->background.red; - back.green = (png_byte)png_ptr->background.green; - back.blue = (png_byte)png_ptr->background.blue; - - for (i = 0; i < istop; i++) - { - if (png_ptr->trans[i] == 0) - { - palette[i] = back; - } - else if (png_ptr->trans[i] != 0xff) - { - /* The png_composite() macro is defined in png.h */ - png_composite(palette[i].red, palette[i].red, - png_ptr->trans[i], back.red); - png_composite(palette[i].green, palette[i].green, - png_ptr->trans[i], back.green); - png_composite(palette[i].blue, palette[i].blue, - png_ptr->trans[i], back.blue); - } - } - - /* Handled alpha, still need to strip the channel. */ - png_ptr->transformations &= ~PNG_BACKGROUND; - png_ptr->transformations |= PNG_STRIP_ALPHA; - } -#endif /* PNG_READ_BACKGROUND_SUPPORTED */ - -#ifdef PNG_READ_SHIFT_SUPPORTED - if ((png_ptr->transformations & PNG_SHIFT) && - (color_type == PNG_COLOR_TYPE_PALETTE)) - { - png_uint_16 i; - png_uint_16 istop = png_ptr->num_palette; - int sr = 8 - png_ptr->sig_bit.red; - int sg = 8 - png_ptr->sig_bit.green; - int sb = 8 - png_ptr->sig_bit.blue; - - if (sr < 0 || sr > 8) - sr = 0; - if (sg < 0 || sg > 8) - sg = 0; - if (sb < 0 || sb > 8) - sb = 0; - for (i = 0; i < istop; i++) - { - png_ptr->palette[i].red >>= sr; - png_ptr->palette[i].green >>= sg; - png_ptr->palette[i].blue >>= sb; - } - } -#endif /* PNG_READ_SHIFT_SUPPORTED */ - } -#if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \ - && !defined(PNG_READ_BACKGROUND_SUPPORTED) - if (png_ptr) - return; -#endif -} - -/* Modify the info structure to reflect the transformations. The - * info should be updated so a PNG file could be written with it, - * assuming the transformations result in valid PNG data. - */ -void /* PRIVATE */ -png_read_transform_info(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_read_transform_info"); - -#ifdef PNG_READ_EXPAND_SUPPORTED - if (png_ptr->transformations & PNG_EXPAND) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (png_ptr->num_trans && - (png_ptr->transformations & PNG_EXPAND_tRNS)) - info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA; - else - info_ptr->color_type = PNG_COLOR_TYPE_RGB; - info_ptr->bit_depth = 8; - info_ptr->num_trans = 0; - } - else - { - if (png_ptr->num_trans) - { - if (png_ptr->transformations & PNG_EXPAND_tRNS) - info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; - } - if (info_ptr->bit_depth < 8) - info_ptr->bit_depth = 8; - info_ptr->num_trans = 0; - } - } -#endif - -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if (png_ptr->transformations & PNG_BACKGROUND) - { - info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA; - info_ptr->num_trans = 0; - info_ptr->background = png_ptr->background; - } -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED - if (png_ptr->transformations & PNG_GAMMA) - { -#ifdef PNG_FLOATING_POINT_SUPPORTED - info_ptr->gamma = png_ptr->gamma; -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_gamma = png_ptr->int_gamma; -#endif - } -#endif - -#ifdef PNG_READ_16_TO_8_SUPPORTED - if ((png_ptr->transformations & PNG_16_TO_8) && (info_ptr->bit_depth == 16)) - info_ptr->bit_depth = 8; -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - if (png_ptr->transformations & PNG_GRAY_TO_RGB) - info_ptr->color_type |= PNG_COLOR_MASK_COLOR; -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - if (png_ptr->transformations & PNG_RGB_TO_GRAY) - info_ptr->color_type &= ~PNG_COLOR_MASK_COLOR; -#endif - -#ifdef PNG_READ_DITHER_SUPPORTED - if (png_ptr->transformations & PNG_DITHER) - { - if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) && - png_ptr->palette_lookup && info_ptr->bit_depth == 8) - { - info_ptr->color_type = PNG_COLOR_TYPE_PALETTE; - } - } -#endif - -#ifdef PNG_READ_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8)) - info_ptr->bit_depth = 8; -#endif - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - info_ptr->channels = 1; - else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) - info_ptr->channels = 3; - else - info_ptr->channels = 1; - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA) - info_ptr->color_type &= ~PNG_COLOR_MASK_ALPHA; -#endif - - if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) - info_ptr->channels++; - -#ifdef PNG_READ_FILLER_SUPPORTED - /* STRIP_ALPHA and FILLER allowed: MASK_ALPHA bit stripped above */ - if ((png_ptr->transformations & PNG_FILLER) && - ((info_ptr->color_type == PNG_COLOR_TYPE_RGB) || - (info_ptr->color_type == PNG_COLOR_TYPE_GRAY))) - { - info_ptr->channels++; - /* If adding a true alpha channel not just filler */ -#ifndef PNG_1_0_X - if (png_ptr->transformations & PNG_ADD_ALPHA) - info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; -#endif - } -#endif - -#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \ -defined(PNG_READ_USER_TRANSFORM_SUPPORTED) - if (png_ptr->transformations & PNG_USER_TRANSFORM) - { - if (info_ptr->bit_depth < png_ptr->user_transform_depth) - info_ptr->bit_depth = png_ptr->user_transform_depth; - if (info_ptr->channels < png_ptr->user_transform_channels) - info_ptr->channels = png_ptr->user_transform_channels; - } -#endif - - info_ptr->pixel_depth = (png_byte)(info_ptr->channels * - info_ptr->bit_depth); - - info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width); - -#ifndef PNG_READ_EXPAND_SUPPORTED - if (png_ptr) - return; -#endif -} - -/* Transform the row. The order of transformations is significant, - * and is very touchy. If you add a transformation, take care to - * decide how it fits in with the other transformations here. - */ -void /* PRIVATE */ -png_do_read_transformations(png_structp png_ptr) -{ - png_debug(1, "in png_do_read_transformations"); - - if (png_ptr->row_buf == NULL) - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char msg[50]; - - png_snprintf2(msg, 50, - "NULL row buffer for row %ld, pass %d", (long)png_ptr->row_number, - png_ptr->pass); - png_error(png_ptr, msg); -#else - png_error(png_ptr, "NULL row buffer"); -#endif - } -#ifdef PNG_WARN_UNINITIALIZED_ROW - if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) - /* Application has failed to call either png_read_start_image() - * or png_read_update_info() after setting transforms that expand - * pixels. This check added to libpng-1.2.19 - */ -#if (PNG_WARN_UNINITIALIZED_ROW==1) - png_error(png_ptr, "Uninitialized row"); -#else - png_warning(png_ptr, "Uninitialized row"); -#endif -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED - if (png_ptr->transformations & PNG_EXPAND) - { - if (png_ptr->row_info.color_type == PNG_COLOR_TYPE_PALETTE) - { - png_do_expand_palette(&(png_ptr->row_info), png_ptr->row_buf + 1, - png_ptr->palette, png_ptr->trans, png_ptr->num_trans); - } - else - { - if (png_ptr->num_trans && - (png_ptr->transformations & PNG_EXPAND_tRNS)) - png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1, - &(png_ptr->trans_values)); - else - png_do_expand(&(png_ptr->row_info), png_ptr->row_buf + 1, - NULL); - } - } -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if (png_ptr->flags & PNG_FLAG_STRIP_ALPHA) - png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1, - PNG_FLAG_FILLER_AFTER | (png_ptr->flags & PNG_FLAG_STRIP_ALPHA)); -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - if (png_ptr->transformations & PNG_RGB_TO_GRAY) - { - int rgb_error = - png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info), - png_ptr->row_buf + 1); - if (rgb_error) - { - png_ptr->rgb_to_gray_status=1; - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == - PNG_RGB_TO_GRAY_WARN) - png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel"); - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == - PNG_RGB_TO_GRAY_ERR) - png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel"); - } - } -#endif - -/* From Andreas Dilger e-mail to png-implement, 26 March 1998: - * - * In most cases, the "simple transparency" should be done prior to doing - * gray-to-RGB, or you will have to test 3x as many bytes to check if a - * pixel is transparent. You would also need to make sure that the - * transparency information is upgraded to RGB. - * - * To summarize, the current flow is: - * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite - * with background "in place" if transparent, - * convert to RGB if necessary - * - Gray + alpha -> composite with gray background and remove alpha bytes, - * convert to RGB if necessary - * - * To support RGB backgrounds for gray images we need: - * - Gray + simple transparency -> convert to RGB + simple transparency, - * compare 3 or 6 bytes and composite with - * background "in place" if transparent - * (3x compare/pixel compared to doing - * composite with gray bkgrnd) - * - Gray + alpha -> convert to RGB + alpha, composite with background and - * remove alpha bytes (3x float - * operations/pixel compared with composite - * on gray background) - * - * Greg's change will do this. The reason it wasn't done before is for - * performance, as this increases the per-pixel operations. If we would check - * in advance if the background was gray or RGB, and position the gray-to-RGB - * transform appropriately, then it would save a lot of work/time. - */ - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* If gray -> RGB, do so now only if background is non-gray; else do later - * for performance reasons - */ - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) && - !(png_ptr->mode & PNG_BACKGROUND_IS_GRAY)) - png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if ((png_ptr->transformations & PNG_BACKGROUND) && - ((png_ptr->num_trans != 0 ) || - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) - png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1, - &(png_ptr->trans_values), &(png_ptr->background) -#ifdef PNG_READ_GAMMA_SUPPORTED - , &(png_ptr->background_1), - png_ptr->gamma_table, png_ptr->gamma_from_1, - png_ptr->gamma_to_1, png_ptr->gamma_16_table, - png_ptr->gamma_16_from_1, png_ptr->gamma_16_to_1, - png_ptr->gamma_shift -#endif -); -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED - if ((png_ptr->transformations & PNG_GAMMA) && -#ifdef PNG_READ_BACKGROUND_SUPPORTED - !((png_ptr->transformations & PNG_BACKGROUND) && - ((png_ptr->num_trans != 0) || - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) && -#endif - (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)) - png_do_gamma(&(png_ptr->row_info), png_ptr->row_buf + 1, - png_ptr->gamma_table, png_ptr->gamma_16_table, - png_ptr->gamma_shift); -#endif - -#ifdef PNG_READ_16_TO_8_SUPPORTED - if (png_ptr->transformations & PNG_16_TO_8) - png_do_chop(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_DITHER_SUPPORTED - if (png_ptr->transformations & PNG_DITHER) - { - png_do_dither((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1, - png_ptr->palette_lookup, png_ptr->dither_index); - if (png_ptr->row_info.rowbytes == (png_uint_32)0) - png_error(png_ptr, "png_do_dither returned rowbytes=0"); - } -#endif - -#ifdef PNG_READ_INVERT_SUPPORTED - if (png_ptr->transformations & PNG_INVERT_MONO) - png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_SHIFT_SUPPORTED - if (png_ptr->transformations & PNG_SHIFT) - png_do_unshift(&(png_ptr->row_info), png_ptr->row_buf + 1, - &(png_ptr->shift)); -#endif - -#ifdef PNG_READ_PACK_SUPPORTED - if (png_ptr->transformations & PNG_PACK) - png_do_unpack(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_BGR_SUPPORTED - if (png_ptr->transformations & PNG_BGR) - png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (png_ptr->transformations & PNG_PACKSWAP) - png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* If gray -> RGB, do so now only if we did not do so above */ - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) && - (png_ptr->mode & PNG_BACKGROUND_IS_GRAY)) - png_do_gray_to_rgb(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED - if (png_ptr->transformations & PNG_FILLER) - png_do_read_filler(&(png_ptr->row_info), png_ptr->row_buf + 1, - (png_uint_32)png_ptr->filler, png_ptr->flags); -#endif - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - if (png_ptr->transformations & PNG_INVERT_ALPHA) - png_do_read_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED - if (png_ptr->transformations & PNG_SWAP_ALPHA) - png_do_read_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_SWAP_SUPPORTED - if (png_ptr->transformations & PNG_SWAP_BYTES) - png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - if (png_ptr->transformations & PNG_USER_TRANSFORM) - { - if (png_ptr->read_user_transform_fn != NULL) - (*(png_ptr->read_user_transform_fn)) /* User read transform function */ - (png_ptr, /* png_ptr */ - &(png_ptr->row_info), /* row_info: */ - /* png_uint_32 width; width of row */ - /* png_uint_32 rowbytes; number of bytes in row */ - /* png_byte color_type; color type of pixels */ - /* png_byte bit_depth; bit depth of samples */ - /* png_byte channels; number of channels (1-4) */ - /* png_byte pixel_depth; bits per pixel (depth*channels) */ - png_ptr->row_buf + 1); /* start of pixel data for row */ -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED - if (png_ptr->user_transform_depth) - png_ptr->row_info.bit_depth = png_ptr->user_transform_depth; - if (png_ptr->user_transform_channels) - png_ptr->row_info.channels = png_ptr->user_transform_channels; -#endif - png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth * - png_ptr->row_info.channels); - png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth, - png_ptr->row_info.width); - } -#endif - -} - -#ifdef PNG_READ_PACK_SUPPORTED -/* Unpack pixels of 1, 2, or 4 bits per pixel into 1 byte per pixel, - * without changing the actual values. Thus, if you had a row with - * a bit depth of 1, you would end up with bytes that only contained - * the numbers 0 or 1. If you would rather they contain 0 and 255, use - * png_do_shift() after this. - */ -void /* PRIVATE */ -png_do_unpack(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_unpack"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL && row_info->bit_depth < 8) -#else - if (row_info->bit_depth < 8) -#endif - { - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - switch (row_info->bit_depth) - { - case 1: - { - png_bytep sp = row + (png_size_t)((row_width - 1) >> 3); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = 7 - (int)((row_width + 7) & 0x07); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x01); - if (shift == 7) - { - shift = 0; - sp--; - } - else - shift++; - - dp--; - } - break; - } - - case 2: - { - - png_bytep sp = row + (png_size_t)((row_width - 1) >> 2); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = (int)((3 - ((row_width + 3) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x03); - if (shift == 6) - { - shift = 0; - sp--; - } - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - png_bytep sp = row + (png_size_t)((row_width - 1) >> 1); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = (int)((1 - ((row_width + 1) & 0x01)) << 2); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x0f); - if (shift == 4) - { - shift = 0; - sp--; - } - else - shift = 4; - - dp--; - } - break; - } - } - row_info->bit_depth = 8; - row_info->pixel_depth = (png_byte)(8 * row_info->channels); - row_info->rowbytes = row_width * row_info->channels; - } -} -#endif - -#ifdef PNG_READ_SHIFT_SUPPORTED -/* Reverse the effects of png_do_shift. This routine merely shifts the - * pixels back to their significant bits values. Thus, if you have - * a row of bit depth 8, but only 5 are significant, this will shift - * the values back to 0 through 31. - */ -void /* PRIVATE */ -png_do_unshift(png_row_infop row_info, png_bytep row, png_color_8p sig_bits) -{ - png_debug(1, "in png_do_unshift"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && sig_bits != NULL && -#endif - row_info->color_type != PNG_COLOR_TYPE_PALETTE) - { - int shift[4]; - int channels = 0; - int c; - png_uint_16 value = 0; - png_uint_32 row_width = row_info->width; - - if (row_info->color_type & PNG_COLOR_MASK_COLOR) - { - shift[channels++] = row_info->bit_depth - sig_bits->red; - shift[channels++] = row_info->bit_depth - sig_bits->green; - shift[channels++] = row_info->bit_depth - sig_bits->blue; - } - else - { - shift[channels++] = row_info->bit_depth - sig_bits->gray; - } - if (row_info->color_type & PNG_COLOR_MASK_ALPHA) - { - shift[channels++] = row_info->bit_depth - sig_bits->alpha; - } - - for (c = 0; c < channels; c++) - { - if (shift[c] <= 0) - shift[c] = 0; - else - value = 1; - } - - if (!value) - return; - - switch (row_info->bit_depth) - { - case 2: - { - png_bytep bp; - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - - for (bp = row, i = 0; i < istop; i++) - { - *bp >>= 1; - *bp++ &= 0x55; - } - break; - } - - case 4: - { - png_bytep bp = row; - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - png_byte mask = (png_byte)((((int)0xf0 >> shift[0]) & (int)0xf0) | - (png_byte)((int)0xf >> shift[0])); - - for (i = 0; i < istop; i++) - { - *bp >>= shift[0]; - *bp++ &= mask; - } - break; - } - - case 8: - { - png_bytep bp = row; - png_uint_32 i; - png_uint_32 istop = row_width * channels; - - for (i = 0; i < istop; i++) - { - *bp++ >>= shift[i%channels]; - } - break; - } - - case 16: - { - png_bytep bp = row; - png_uint_32 i; - png_uint_32 istop = channels * row_width; - - for (i = 0; i < istop; i++) - { - value = (png_uint_16)((*bp << 8) + *(bp + 1)); - value >>= shift[i%channels]; - *bp++ = (png_byte)(value >> 8); - *bp++ = (png_byte)(value & 0xff); - } - break; - } - } - } -} -#endif - -#ifdef PNG_READ_16_TO_8_SUPPORTED -/* Chop rows of bit depth 16 down to 8 */ -void /* PRIVATE */ -png_do_chop(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_chop"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL && row_info->bit_depth == 16) -#else - if (row_info->bit_depth == 16) -#endif - { - png_bytep sp = row; - png_bytep dp = row; - png_uint_32 i; - png_uint_32 istop = row_info->width * row_info->channels; - - for (i = 0; i<istop; i++, sp += 2, dp++) - { -#ifdef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED - /* This does a more accurate scaling of the 16-bit color - * value, rather than a simple low-byte truncation. - * - * What the ideal calculation should be: - * *dp = (((((png_uint_32)(*sp) << 8) | - * (png_uint_32)(*(sp + 1))) * 255 + 127) - * / (png_uint_32)65535L; - * - * GRR: no, I think this is what it really should be: - * *dp = (((((png_uint_32)(*sp) << 8) | - * (png_uint_32)(*(sp + 1))) + 128L) - * / (png_uint_32)257L; - * - * GRR: here's the exact calculation with shifts: - * temp = (((png_uint_32)(*sp) << 8) | - * (png_uint_32)(*(sp + 1))) + 128L; - * *dp = (temp - (temp >> 8)) >> 8; - * - * Approximate calculation with shift/add instead of multiply/divide: - * *dp = ((((png_uint_32)(*sp) << 8) | - * (png_uint_32)((int)(*(sp + 1)) - *sp)) + 128) >> 8; - * - * What we actually do to avoid extra shifting and conversion: - */ - - *dp = *sp + ((((int)(*(sp + 1)) - *sp) > 128) ? 1 : 0); -#else - /* Simply discard the low order byte */ - *dp = *sp; -#endif - } - row_info->bit_depth = 8; - row_info->pixel_depth = (png_byte)(8 * row_info->channels); - row_info->rowbytes = row_info->width * row_info->channels; - } -} -#endif - -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED -void /* PRIVATE */ -png_do_read_swap_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_read_swap_alpha"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - png_uint_32 row_width = row_info->width; - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - /* This converts from RGBA to ARGB */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save; - } - } - /* This converts from RRGGBBAA to AARRGGBB */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save[2]; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save[0] = *(--sp); - save[1] = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save[0]; - *(--dp) = save[1]; - } - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - /* This converts from GA to AG */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save; - } - } - /* This converts from GGAA to AAGG */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save[2]; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save[0] = *(--sp); - save[1] = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save[0]; - *(--dp) = save[1]; - } - } - } - } -} -#endif - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED -void /* PRIVATE */ -png_do_read_invert_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_read_invert_alpha"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - png_uint_32 row_width = row_info->width; - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - /* This inverts the alpha channel in RGBA */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - -/* This does nothing: - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - We can replace it with: -*/ - sp-=3; - dp=sp; - } - } - /* This inverts the alpha channel in RRGGBBAA */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = (png_byte)(255 - *(--sp)); - -/* This does nothing: - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - We can replace it with: -*/ - sp-=6; - dp=sp; - } - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - /* This inverts the alpha channel in GA */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = *(--sp); - } - } - /* This inverts the alpha channel in GGAA */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = (png_byte)(255 - *(--sp)); -/* - *(--dp) = *(--sp); - *(--dp) = *(--sp); -*/ - sp-=2; - dp=sp; - } - } - } - } -} -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED -/* Add filler channel if we have RGB color */ -void /* PRIVATE */ -png_do_read_filler(png_row_infop row_info, png_bytep row, - png_uint_32 filler, png_uint_32 flags) -{ - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - png_byte hi_filler = (png_byte)((filler>>8) & 0xff); - png_byte lo_filler = (png_byte)(filler & 0xff); - - png_debug(1, "in png_do_read_filler"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - if (row_info->bit_depth == 8) - { - /* This changes the data from G to GX */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - png_bytep sp = row + (png_size_t)row_width; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - row_info->channels = 2; - row_info->pixel_depth = 16; - row_info->rowbytes = row_width * 2; - } - /* This changes the data from G to XG */ - else - { - png_bytep sp = row + (png_size_t)row_width; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = lo_filler; - } - row_info->channels = 2; - row_info->pixel_depth = 16; - row_info->rowbytes = row_width * 2; - } - } - else if (row_info->bit_depth == 16) - { - /* This changes the data from GG to GGXX */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - png_bytep sp = row + (png_size_t)row_width * 2; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 1; i < row_width; i++) - { - *(--dp) = hi_filler; - *(--dp) = lo_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = hi_filler; - *(--dp) = lo_filler; - row_info->channels = 2; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - /* This changes the data from GG to XXGG */ - else - { - png_bytep sp = row + (png_size_t)row_width * 2; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = hi_filler; - *(--dp) = lo_filler; - } - row_info->channels = 2; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - } - } /* COLOR_TYPE == GRAY */ - else if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - if (row_info->bit_depth == 8) - { - /* This changes the data from RGB to RGBX */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - png_bytep sp = row + (png_size_t)row_width * 3; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - row_info->channels = 4; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - /* This changes the data from RGB to XRGB */ - else - { - png_bytep sp = row + (png_size_t)row_width * 3; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = lo_filler; - } - row_info->channels = 4; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - } - else if (row_info->bit_depth == 16) - { - /* This changes the data from RRGGBB to RRGGBBXX */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - png_bytep sp = row + (png_size_t)row_width * 6; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 1; i < row_width; i++) - { - *(--dp) = hi_filler; - *(--dp) = lo_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = hi_filler; - *(--dp) = lo_filler; - row_info->channels = 4; - row_info->pixel_depth = 64; - row_info->rowbytes = row_width * 8; - } - /* This changes the data from RRGGBB to XXRRGGBB */ - else - { - png_bytep sp = row + (png_size_t)row_width * 6; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = hi_filler; - *(--dp) = lo_filler; - } - row_info->channels = 4; - row_info->pixel_depth = 64; - row_info->rowbytes = row_width * 8; - } - } - } /* COLOR_TYPE == RGB */ -} -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -/* Expand grayscale files to RGB, with or without alpha */ -void /* PRIVATE */ -png_do_gray_to_rgb(png_row_infop row_info, png_bytep row) -{ - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - png_debug(1, "in png_do_gray_to_rgb"); - - if (row_info->bit_depth >= 8 && -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - !(row_info->color_type & PNG_COLOR_MASK_COLOR)) - { - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - if (row_info->bit_depth == 8) - { - png_bytep sp = row + (png_size_t)row_width - 1; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(dp--) = *sp; - *(dp--) = *sp; - *(dp--) = *(sp--); - } - } - else - { - png_bytep sp = row + (png_size_t)row_width * 2 - 1; - png_bytep dp = sp + (png_size_t)row_width * 4; - for (i = 0; i < row_width; i++) - { - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *(sp--); - *(dp--) = *(sp--); - } - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (row_info->bit_depth == 8) - { - png_bytep sp = row + (png_size_t)row_width * 2 - 1; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(dp--) = *(sp--); - *(dp--) = *sp; - *(dp--) = *sp; - *(dp--) = *(sp--); - } - } - else - { - png_bytep sp = row + (png_size_t)row_width * 4 - 1; - png_bytep dp = sp + (png_size_t)row_width * 4; - for (i = 0; i < row_width; i++) - { - *(dp--) = *(sp--); - *(dp--) = *(sp--); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *(sp--); - *(dp--) = *(sp--); - } - } - } - row_info->channels += (png_byte)2; - row_info->color_type |= PNG_COLOR_MASK_COLOR; - row_info->pixel_depth = (png_byte)(row_info->channels * - row_info->bit_depth); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -/* Reduce RGB files to grayscale, with or without alpha - * using the equation given in Poynton's ColorFAQ at - * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008) - * New link: - * <http://www.poynton.com/notes/colour_and_gamma/> - * Charles Poynton poynton at poynton.com - * - * Y = 0.212671 * R + 0.715160 * G + 0.072169 * B - * - * We approximate this with - * - * Y = 0.21268 * R + 0.7151 * G + 0.07217 * B - * - * which can be expressed with integers as - * - * Y = (6969 * R + 23434 * G + 2365 * B)/32768 - * - * The calculation is to be done in a linear colorspace. - * - * Other integer coefficents can be used via png_set_rgb_to_gray(). - */ -int /* PRIVATE */ -png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row) - -{ - png_uint_32 i; - - png_uint_32 row_width = row_info->width; - int rgb_error = 0; - - png_debug(1, "in png_do_rgb_to_gray"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - (row_info->color_type & PNG_COLOR_MASK_COLOR)) - { - png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff; - png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff; - png_uint_32 bc = png_ptr->rgb_to_gray_blue_coeff; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - if (row_info->bit_depth == 8) - { -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - - for (i = 0; i < row_width; i++) - { - png_byte red = png_ptr->gamma_to_1[*(sp++)]; - png_byte green = png_ptr->gamma_to_1[*(sp++)]; - png_byte blue = png_ptr->gamma_to_1[*(sp++)]; - if (red != green || red != blue) - { - rgb_error |= 1; - *(dp++) = png_ptr->gamma_from_1[ - (rc*red + gc*green + bc*blue)>>15]; - } - else - *(dp++) = *(sp - 1); - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_byte red = *(sp++); - png_byte green = *(sp++); - png_byte blue = *(sp++); - if (red != green || red != blue) - { - rgb_error |= 1; - *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15); - } - else - *(dp++) = *(sp - 1); - } - } - } - - else /* RGB bit_depth == 16 */ - { -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - if (png_ptr->gamma_16_to_1 != NULL && - png_ptr->gamma_16_from_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, w; - - red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - - if (red == green && red == blue) - w = red; - else - { - png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >> - png_ptr->gamma_shift][red>>8]; - png_uint_16 green_1 = - png_ptr->gamma_16_to_1[(green&0xff) >> - png_ptr->gamma_shift][green>>8]; - png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >> - png_ptr->gamma_shift][blue>>8]; - png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1 - + bc*blue_1)>>15); - w = png_ptr->gamma_16_from_1[(gray16&0xff) >> - png_ptr->gamma_shift][gray16 >> 8]; - rgb_error |= 1; - } - - *(dp++) = (png_byte)((w>>8) & 0xff); - *(dp++) = (png_byte)(w & 0xff); - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, gray16; - - red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - - if (red != green || red != blue) - rgb_error |= 1; - gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15); - *(dp++) = (png_byte)((gray16>>8) & 0xff); - *(dp++) = (png_byte)(gray16 & 0xff); - } - } - } - } - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - if (row_info->bit_depth == 8) - { -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_byte red = png_ptr->gamma_to_1[*(sp++)]; - png_byte green = png_ptr->gamma_to_1[*(sp++)]; - png_byte blue = png_ptr->gamma_to_1[*(sp++)]; - if (red != green || red != blue) - rgb_error |= 1; - *(dp++) = png_ptr->gamma_from_1 - [(rc*red + gc*green + bc*blue)>>15]; - *(dp++) = *(sp++); /* alpha */ - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_byte red = *(sp++); - png_byte green = *(sp++); - png_byte blue = *(sp++); - if (red != green || red != blue) - rgb_error |= 1; - *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15); - *(dp++) = *(sp++); /* alpha */ - } - } - } - else /* RGBA bit_depth == 16 */ - { -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - if (png_ptr->gamma_16_to_1 != NULL && - png_ptr->gamma_16_from_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, w; - - red = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2; - - if (red == green && red == blue) - w = red; - else - { - png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff) >> - png_ptr->gamma_shift][red>>8]; - png_uint_16 green_1 = - png_ptr->gamma_16_to_1[(green&0xff) >> - png_ptr->gamma_shift][green>>8]; - png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff) >> - png_ptr->gamma_shift][blue>>8]; - png_uint_16 gray16 = (png_uint_16)((rc * red_1 - + gc * green_1 + bc * blue_1)>>15); - w = png_ptr->gamma_16_from_1[(gray16&0xff) >> - png_ptr->gamma_shift][gray16 >> 8]; - rgb_error |= 1; - } - - *(dp++) = (png_byte)((w>>8) & 0xff); - *(dp++) = (png_byte)(w & 0xff); - *(dp++) = *(sp++); /* alpha */ - *(dp++) = *(sp++); - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, gray16; - red = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2; - green = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2; - blue = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2; - if (red != green || red != blue) - rgb_error |= 1; - gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15); - *(dp++) = (png_byte)((gray16>>8) & 0xff); - *(dp++) = (png_byte)(gray16 & 0xff); - *(dp++) = *(sp++); /* alpha */ - *(dp++) = *(sp++); - } - } - } - } - row_info->channels -= (png_byte)2; - row_info->color_type &= ~PNG_COLOR_MASK_COLOR; - row_info->pixel_depth = (png_byte)(row_info->channels * - row_info->bit_depth); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - return rgb_error; -} -#endif - -/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth - * large of png_color. This lets grayscale images be treated as - * paletted. Most useful for gamma correction and simplification - * of code. - */ -void PNGAPI -png_build_grayscale_palette(int bit_depth, png_colorp palette) -{ - int num_palette; - int color_inc; - int i; - int v; - - png_debug(1, "in png_do_build_grayscale_palette"); - - if (palette == NULL) - return; - - switch (bit_depth) - { - case 1: - num_palette = 2; - color_inc = 0xff; - break; - - case 2: - num_palette = 4; - color_inc = 0x55; - break; - - case 4: - num_palette = 16; - color_inc = 0x11; - break; - - case 8: - num_palette = 256; - color_inc = 1; - break; - - default: - num_palette = 0; - color_inc = 0; - break; - } - - for (i = 0, v = 0; i < num_palette; i++, v += color_inc) - { - palette[i].red = (png_byte)v; - palette[i].green = (png_byte)v; - palette[i].blue = (png_byte)v; - } -} - -/* This function is currently unused. Do we really need it? */ -#if defined(PNG_READ_DITHER_SUPPORTED) && \ - defined(PNG_CORRECT_PALETTE_SUPPORTED) -void /* PRIVATE */ -png_correct_palette(png_structp png_ptr, png_colorp palette, - int num_palette) -{ - png_debug(1, "in png_correct_palette"); - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \ - defined(PNG_READ_GAMMA_SUPPORTED) && \ - defined(PNG_FLOATING_POINT_SUPPORTED) - if (png_ptr->transformations & (PNG_GAMMA | PNG_BACKGROUND)) - { - png_color back, back_1; - - if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE) - { - back.red = png_ptr->gamma_table[png_ptr->background.red]; - back.green = png_ptr->gamma_table[png_ptr->background.green]; - back.blue = png_ptr->gamma_table[png_ptr->background.blue]; - - back_1.red = png_ptr->gamma_to_1[png_ptr->background.red]; - back_1.green = png_ptr->gamma_to_1[png_ptr->background.green]; - back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue]; - } - else - { - double g; - - g = 1.0 / (png_ptr->background_gamma * png_ptr->screen_gamma); - - if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_SCREEN - || fabs(g - 1.0) < PNG_GAMMA_THRESHOLD) - { - back.red = png_ptr->background.red; - back.green = png_ptr->background.green; - back.blue = png_ptr->background.blue; - } - else - { - back.red = - (png_byte)(pow((double)png_ptr->background.red/255, g) * - 255.0 + 0.5); - back.green = - (png_byte)(pow((double)png_ptr->background.green/255, g) * - 255.0 + 0.5); - back.blue = - (png_byte)(pow((double)png_ptr->background.blue/255, g) * - 255.0 + 0.5); - } - - g = 1.0 / png_ptr->background_gamma; - - back_1.red = - (png_byte)(pow((double)png_ptr->background.red/255, g) * - 255.0 + 0.5); - back_1.green = - (png_byte)(pow((double)png_ptr->background.green/255, g) * - 255.0 + 0.5); - back_1.blue = - (png_byte)(pow((double)png_ptr->background.blue/255, g) * - 255.0 + 0.5); - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_uint_32 i; - - for (i = 0; i < (png_uint_32)num_palette; i++) - { - if (i < png_ptr->num_trans && png_ptr->trans[i] == 0) - { - palette[i] = back; - } - else if (i < png_ptr->num_trans && png_ptr->trans[i] != 0xff) - { - png_byte v, w; - - v = png_ptr->gamma_to_1[png_ptr->palette[i].red]; - png_composite(w, v, png_ptr->trans[i], back_1.red); - palette[i].red = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[png_ptr->palette[i].green]; - png_composite(w, v, png_ptr->trans[i], back_1.green); - palette[i].green = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[png_ptr->palette[i].blue]; - png_composite(w, v, png_ptr->trans[i], back_1.blue); - palette[i].blue = png_ptr->gamma_from_1[w]; - } - else - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - } - } - else - { - int i; - - for (i = 0; i < num_palette; i++) - { - if (palette[i].red == (png_byte)png_ptr->trans_values.gray) - { - palette[i] = back; - } - else - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - } - } - } - else -#endif -#ifdef PNG_READ_GAMMA_SUPPORTED - if (png_ptr->transformations & PNG_GAMMA) - { - int i; - - for (i = 0; i < num_palette; i++) - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - } -#ifdef PNG_READ_BACKGROUND_SUPPORTED - else -#endif -#endif -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if (png_ptr->transformations & PNG_BACKGROUND) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_color back; - - back.red = (png_byte)png_ptr->background.red; - back.green = (png_byte)png_ptr->background.green; - back.blue = (png_byte)png_ptr->background.blue; - - for (i = 0; i < (int)png_ptr->num_trans; i++) - { - if (png_ptr->trans[i] == 0) - { - palette[i].red = back.red; - palette[i].green = back.green; - palette[i].blue = back.blue; - } - else if (png_ptr->trans[i] != 0xff) - { - png_composite(palette[i].red, png_ptr->palette[i].red, - png_ptr->trans[i], back.red); - png_composite(palette[i].green, png_ptr->palette[i].green, - png_ptr->trans[i], back.green); - png_composite(palette[i].blue, png_ptr->palette[i].blue, - png_ptr->trans[i], back.blue); - } - } - } - else /* Assume grayscale palette (what else could it be?) */ - { - int i; - - for (i = 0; i < num_palette; i++) - { - if (i == (png_byte)png_ptr->trans_values.gray) - { - palette[i].red = (png_byte)png_ptr->background.red; - palette[i].green = (png_byte)png_ptr->background.green; - palette[i].blue = (png_byte)png_ptr->background.blue; - } - } - } - } -#endif -} -#endif - -#ifdef PNG_READ_BACKGROUND_SUPPORTED -/* Replace any alpha or transparency with the supplied background color. - * "background" is already in the screen gamma, while "background_1" is - * at a gamma of 1.0. Paletted files have already been taken care of. - */ -void /* PRIVATE */ -png_do_background(png_row_infop row_info, png_bytep row, - png_color_16p trans_values, png_color_16p background -#ifdef PNG_READ_GAMMA_SUPPORTED - , png_color_16p background_1, - png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, - png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, - png_uint_16pp gamma_16_to_1, int gamma_shift -#endif - ) -{ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - int shift; - - png_debug(1, "in png_do_background"); - - if (background != NULL && -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - (!(row_info->color_type & PNG_COLOR_MASK_ALPHA) || - (row_info->color_type != PNG_COLOR_TYPE_PALETTE && trans_values))) - { - switch (row_info->color_type) - { - case PNG_COLOR_TYPE_GRAY: - { - switch (row_info->bit_depth) - { - case 1: - { - sp = row; - shift = 7; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x01) - == trans_values->gray) - { - *sp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff); - *sp |= (png_byte)(background->gray << shift); - } - if (!shift) - { - shift = 7; - sp++; - } - else - shift--; - } - break; - } - - case 2: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - shift = 6; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x03) - == trans_values->gray) - { - *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff); - *sp |= (png_byte)(background->gray << shift); - } - else - { - png_byte p = (png_byte)((*sp >> shift) & 0x03); - png_byte g = (png_byte)((gamma_table [p | (p << 2) | - (p << 4) | (p << 6)] >> 6) & 0x03); - *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff); - *sp |= (png_byte)(g << shift); - } - if (!shift) - { - shift = 6; - sp++; - } - else - shift -= 2; - } - } - else -#endif - { - sp = row; - shift = 6; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x03) - == trans_values->gray) - { - *sp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff); - *sp |= (png_byte)(background->gray << shift); - } - if (!shift) - { - shift = 6; - sp++; - } - else - shift -= 2; - } - } - break; - } - - case 4: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - shift = 4; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x0f) - == trans_values->gray) - { - *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff); - *sp |= (png_byte)(background->gray << shift); - } - else - { - png_byte p = (png_byte)((*sp >> shift) & 0x0f); - png_byte g = (png_byte)((gamma_table[p | - (p << 4)] >> 4) & 0x0f); - *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff); - *sp |= (png_byte)(g << shift); - } - if (!shift) - { - shift = 4; - sp++; - } - else - shift -= 4; - } - } - else -#endif - { - sp = row; - shift = 4; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x0f) - == trans_values->gray) - { - *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff); - *sp |= (png_byte)(background->gray << shift); - } - if (!shift) - { - shift = 4; - sp++; - } - else - shift -= 4; - } - } - break; - } - - case 8: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp++) - { - if (*sp == trans_values->gray) - { - *sp = (png_byte)background->gray; - } - else - { - *sp = gamma_table[*sp]; - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp++) - { - if (*sp == trans_values->gray) - { - *sp = (png_byte)background->gray; - } - } - } - break; - } - - case 16: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_uint_16 v; - - v = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - if (v == trans_values->gray) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((background->gray >> 8) & 0xff); - *(sp + 1) = (png_byte)(background->gray & 0xff); - } - else - { - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_uint_16 v; - - v = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - if (v == trans_values->gray) - { - *sp = (png_byte)((background->gray >> 8) & 0xff); - *(sp + 1) = (png_byte)(background->gray & 0xff); - } - } - } - break; - } - } - break; - } - - case PNG_COLOR_TYPE_RGB: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 3) - { - if (*sp == trans_values->red && - *(sp + 1) == trans_values->green && - *(sp + 2) == trans_values->blue) - { - *sp = (png_byte)background->red; - *(sp + 1) = (png_byte)background->green; - *(sp + 2) = (png_byte)background->blue; - } - else - { - *sp = gamma_table[*sp]; - *(sp + 1) = gamma_table[*(sp + 1)]; - *(sp + 2) = gamma_table[*(sp + 2)]; - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 3) - { - if (*sp == trans_values->red && - *(sp + 1) == trans_values->green && - *(sp + 2) == trans_values->blue) - { - *sp = (png_byte)background->red; - *(sp + 1) = (png_byte)background->green; - *(sp + 2) = (png_byte)background->blue; - } - } - } - } - else /* if (row_info->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 6) - { - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3)); - png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5)); - if (r == trans_values->red && g == trans_values->green && - b == trans_values->blue) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((background->red >> 8) & 0xff); - *(sp + 1) = (png_byte)(background->red & 0xff); - *(sp + 2) = (png_byte)((background->green >> 8) & 0xff); - *(sp + 3) = (png_byte)(background->green & 0xff); - *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff); - *(sp + 5) = (png_byte)(background->blue & 0xff); - } - else - { - png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)]; - *(sp + 2) = (png_byte)((v >> 8) & 0xff); - *(sp + 3) = (png_byte)(v & 0xff); - v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)]; - *(sp + 4) = (png_byte)((v >> 8) & 0xff); - *(sp + 5) = (png_byte)(v & 0xff); - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 6) - { - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp+1)); - png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3)); - png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5)); - - if (r == trans_values->red && g == trans_values->green && - b == trans_values->blue) - { - *sp = (png_byte)((background->red >> 8) & 0xff); - *(sp + 1) = (png_byte)(background->red & 0xff); - *(sp + 2) = (png_byte)((background->green >> 8) & 0xff); - *(sp + 3) = (png_byte)(background->green & 0xff); - *(sp + 4) = (png_byte)((background->blue >> 8) & 0xff); - *(sp + 5) = (png_byte)(background->blue & 0xff); - } - } - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY_ALPHA: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_to_1 != NULL && gamma_from_1 != NULL && - gamma_table != NULL) - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 2, dp++) - { - png_uint_16 a = *(sp + 1); - - if (a == 0xff) - { - *dp = gamma_table[*sp]; - } - else if (a == 0) - { - /* Background is already in screen gamma */ - *dp = (png_byte)background->gray; - } - else - { - png_byte v, w; - - v = gamma_to_1[*sp]; - png_composite(w, v, a, background_1->gray); - *dp = gamma_from_1[w]; - } - } - } - else -#endif - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 2, dp++) - { - png_byte a = *(sp + 1); - - if (a == 0xff) - { - *dp = *sp; - } -#ifdef PNG_READ_GAMMA_SUPPORTED - else if (a == 0) - { - *dp = (png_byte)background->gray; - } - else - { - png_composite(*dp, *sp, a, background_1->gray); - } -#else - *dp = (png_byte)background->gray; -#endif - } - } - } - else /* if (png_ptr->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL && gamma_16_from_1 != NULL && - gamma_16_to_1 != NULL) - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 4, dp += 2) - { - png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3)); - - if (a == (png_uint_16)0xffff) - { - png_uint_16 v; - - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *dp = (png_byte)((v >> 8) & 0xff); - *(dp + 1) = (png_byte)(v & 0xff); - } -#ifdef PNG_READ_GAMMA_SUPPORTED - else if (a == 0) -#else - else -#endif - { - /* Background is already in screen gamma */ - *dp = (png_byte)((background->gray >> 8) & 0xff); - *(dp + 1) = (png_byte)(background->gray & 0xff); - } -#ifdef PNG_READ_GAMMA_SUPPORTED - else - { - png_uint_16 g, v, w; - - g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp]; - png_composite_16(v, g, a, background_1->gray); - w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8]; - *dp = (png_byte)((w >> 8) & 0xff); - *(dp + 1) = (png_byte)(w & 0xff); - } -#endif - } - } - else -#endif - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 4, dp += 2) - { - png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3)); - if (a == (png_uint_16)0xffff) - { - png_memcpy(dp, sp, 2); - } -#ifdef PNG_READ_GAMMA_SUPPORTED - else if (a == 0) -#else - else -#endif - { - *dp = (png_byte)((background->gray >> 8) & 0xff); - *(dp + 1) = (png_byte)(background->gray & 0xff); - } -#ifdef PNG_READ_GAMMA_SUPPORTED - else - { - png_uint_16 g, v; - - g = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - png_composite_16(v, g, a, background_1->gray); - *dp = (png_byte)((v >> 8) & 0xff); - *(dp + 1) = (png_byte)(v & 0xff); - } -#endif - } - } - } - break; - } - - case PNG_COLOR_TYPE_RGB_ALPHA: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_to_1 != NULL && gamma_from_1 != NULL && - gamma_table != NULL) - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 4, dp += 3) - { - png_byte a = *(sp + 3); - - if (a == 0xff) - { - *dp = gamma_table[*sp]; - *(dp + 1) = gamma_table[*(sp + 1)]; - *(dp + 2) = gamma_table[*(sp + 2)]; - } - else if (a == 0) - { - /* Background is already in screen gamma */ - *dp = (png_byte)background->red; - *(dp + 1) = (png_byte)background->green; - *(dp + 2) = (png_byte)background->blue; - } - else - { - png_byte v, w; - - v = gamma_to_1[*sp]; - png_composite(w, v, a, background_1->red); - *dp = gamma_from_1[w]; - v = gamma_to_1[*(sp + 1)]; - png_composite(w, v, a, background_1->green); - *(dp + 1) = gamma_from_1[w]; - v = gamma_to_1[*(sp + 2)]; - png_composite(w, v, a, background_1->blue); - *(dp + 2) = gamma_from_1[w]; - } - } - } - else -#endif - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 4, dp += 3) - { - png_byte a = *(sp + 3); - - if (a == 0xff) - { - *dp = *sp; - *(dp + 1) = *(sp + 1); - *(dp + 2) = *(sp + 2); - } - else if (a == 0) - { - *dp = (png_byte)background->red; - *(dp + 1) = (png_byte)background->green; - *(dp + 2) = (png_byte)background->blue; - } - else - { - png_composite(*dp, *sp, a, background->red); - png_composite(*(dp + 1), *(sp + 1), a, - background->green); - png_composite(*(dp + 2), *(sp + 2), a, - background->blue); - } - } - } - } - else /* if (row_info->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL && gamma_16_from_1 != NULL && - gamma_16_to_1 != NULL) - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 8, dp += 6) - { - png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6)) - << 8) + (png_uint_16)(*(sp + 7))); - if (a == (png_uint_16)0xffff) - { - png_uint_16 v; - - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *dp = (png_byte)((v >> 8) & 0xff); - *(dp + 1) = (png_byte)(v & 0xff); - v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)]; - *(dp + 2) = (png_byte)((v >> 8) & 0xff); - *(dp + 3) = (png_byte)(v & 0xff); - v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)]; - *(dp + 4) = (png_byte)((v >> 8) & 0xff); - *(dp + 5) = (png_byte)(v & 0xff); - } - else if (a == 0) - { - /* Background is already in screen gamma */ - *dp = (png_byte)((background->red >> 8) & 0xff); - *(dp + 1) = (png_byte)(background->red & 0xff); - *(dp + 2) = (png_byte)((background->green >> 8) & 0xff); - *(dp + 3) = (png_byte)(background->green & 0xff); - *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff); - *(dp + 5) = (png_byte)(background->blue & 0xff); - } - else - { - png_uint_16 v, w, x; - - v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp]; - png_composite_16(w, v, a, background_1->red); - x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8]; - *dp = (png_byte)((x >> 8) & 0xff); - *(dp + 1) = (png_byte)(x & 0xff); - v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)]; - png_composite_16(w, v, a, background_1->green); - x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8]; - *(dp + 2) = (png_byte)((x >> 8) & 0xff); - *(dp + 3) = (png_byte)(x & 0xff); - v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)]; - png_composite_16(w, v, a, background_1->blue); - x = gamma_16_from_1[(w & 0xff) >> gamma_shift][w >> 8]; - *(dp + 4) = (png_byte)((x >> 8) & 0xff); - *(dp + 5) = (png_byte)(x & 0xff); - } - } - } - else -#endif - { - sp = row; - dp = row; - for (i = 0; i < row_width; i++, sp += 8, dp += 6) - { - png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6)) - << 8) + (png_uint_16)(*(sp + 7))); - if (a == (png_uint_16)0xffff) - { - png_memcpy(dp, sp, 6); - } - else if (a == 0) - { - *dp = (png_byte)((background->red >> 8) & 0xff); - *(dp + 1) = (png_byte)(background->red & 0xff); - *(dp + 2) = (png_byte)((background->green >> 8) & 0xff); - *(dp + 3) = (png_byte)(background->green & 0xff); - *(dp + 4) = (png_byte)((background->blue >> 8) & 0xff); - *(dp + 5) = (png_byte)(background->blue & 0xff); - } - else - { - png_uint_16 v; - - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8) - + *(sp + 5)); - - png_composite_16(v, r, a, background->red); - *dp = (png_byte)((v >> 8) & 0xff); - *(dp + 1) = (png_byte)(v & 0xff); - png_composite_16(v, g, a, background->green); - *(dp + 2) = (png_byte)((v >> 8) & 0xff); - *(dp + 3) = (png_byte)(v & 0xff); - png_composite_16(v, b, a, background->blue); - *(dp + 4) = (png_byte)((v >> 8) & 0xff); - *(dp + 5) = (png_byte)(v & 0xff); - } - } - } - } - break; - } - } - - if (row_info->color_type & PNG_COLOR_MASK_ALPHA) - { - row_info->color_type &= ~PNG_COLOR_MASK_ALPHA; - row_info->channels--; - row_info->pixel_depth = (png_byte)(row_info->channels * - row_info->bit_depth); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - } -} -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED -/* Gamma correct the image, avoiding the alpha channel. Make sure - * you do this after you deal with the transparency issue on grayscale - * or RGB images. If your bit depth is 8, use gamma_table, if it - * is 16, use gamma_16_table and gamma_shift. Build these with - * build_gamma_table(). - */ -void /* PRIVATE */ -png_do_gamma(png_row_infop row_info, png_bytep row, - png_bytep gamma_table, png_uint_16pp gamma_16_table, - int gamma_shift) -{ - png_bytep sp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_gamma"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - ((row_info->bit_depth <= 8 && gamma_table != NULL) || - (row_info->bit_depth == 16 && gamma_16_table != NULL))) - { - switch (row_info->color_type) - { - case PNG_COLOR_TYPE_RGB: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - } - } - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - } - } - break; - } - - case PNG_COLOR_TYPE_RGB_ALPHA: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - sp++; - } - } - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 4; - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY_ALPHA: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp += 2; - } - } - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 4; - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY: - { - if (row_info->bit_depth == 2) - { - sp = row; - for (i = 0; i < row_width; i += 4) - { - int a = *sp & 0xc0; - int b = *sp & 0x30; - int c = *sp & 0x0c; - int d = *sp & 0x03; - - *sp = (png_byte)( - ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)| - ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)| - ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)| - ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) )); - sp++; - } - } - - if (row_info->bit_depth == 4) - { - sp = row; - for (i = 0; i < row_width; i += 2) - { - int msb = *sp & 0xf0; - int lsb = *sp & 0x0f; - - *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0) - | (((int)gamma_table[(lsb << 4) | lsb]) >> 4)); - sp++; - } - } - - else if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - } - } - - else if (row_info->bit_depth == 16) - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - } - } - break; - } - } - } -} -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED -/* Expands a palette row to an RGB or RGBA row depending - * upon whether you supply trans and num_trans. - */ -void /* PRIVATE */ -png_do_expand_palette(png_row_infop row_info, png_bytep row, - png_colorp palette, png_bytep trans, int num_trans) -{ - int shift, value; - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_expand_palette"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - row_info->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (row_info->bit_depth < 8) - { - switch (row_info->bit_depth) - { - case 1: - { - sp = row + (png_size_t)((row_width - 1) >> 3); - dp = row + (png_size_t)row_width - 1; - shift = 7 - (int)((row_width + 7) & 0x07); - for (i = 0; i < row_width; i++) - { - if ((*sp >> shift) & 0x01) - *dp = 1; - else - *dp = 0; - if (shift == 7) - { - shift = 0; - sp--; - } - else - shift++; - - dp--; - } - break; - } - - case 2: - { - sp = row + (png_size_t)((row_width - 1) >> 2); - dp = row + (png_size_t)row_width - 1; - shift = (int)((3 - ((row_width + 3) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x03; - *dp = (png_byte)value; - if (shift == 6) - { - shift = 0; - sp--; - } - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - sp = row + (png_size_t)((row_width - 1) >> 1); - dp = row + (png_size_t)row_width - 1; - shift = (int)((row_width & 0x01) << 2); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x0f; - *dp = (png_byte)value; - if (shift == 4) - { - shift = 0; - sp--; - } - else - shift += 4; - - dp--; - } - break; - } - } - row_info->bit_depth = 8; - row_info->pixel_depth = 8; - row_info->rowbytes = row_width; - } - switch (row_info->bit_depth) - { - case 8: - { - if (trans != NULL) - { - sp = row + (png_size_t)row_width - 1; - dp = row + (png_size_t)(row_width << 2) - 1; - - for (i = 0; i < row_width; i++) - { - if ((int)(*sp) >= num_trans) - *dp-- = 0xff; - else - *dp-- = trans[*sp]; - *dp-- = palette[*sp].blue; - *dp-- = palette[*sp].green; - *dp-- = palette[*sp].red; - sp--; - } - row_info->bit_depth = 8; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - row_info->color_type = 6; - row_info->channels = 4; - } - else - { - sp = row + (png_size_t)row_width - 1; - dp = row + (png_size_t)(row_width * 3) - 1; - - for (i = 0; i < row_width; i++) - { - *dp-- = palette[*sp].blue; - *dp-- = palette[*sp].green; - *dp-- = palette[*sp].red; - sp--; - } - - row_info->bit_depth = 8; - row_info->pixel_depth = 24; - row_info->rowbytes = row_width * 3; - row_info->color_type = 2; - row_info->channels = 3; - } - break; - } - } - } -} - -/* If the bit depth < 8, it is expanded to 8. Also, if the already - * expanded transparency value is supplied, an alpha channel is built. - */ -void /* PRIVATE */ -png_do_expand(png_row_infop row_info, png_bytep row, - png_color_16p trans_value) -{ - int shift, value; - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_expand"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - png_uint_16 gray = (png_uint_16)(trans_value ? trans_value->gray : 0); - - if (row_info->bit_depth < 8) - { - switch (row_info->bit_depth) - { - case 1: - { - gray = (png_uint_16)((gray&0x01)*0xff); - sp = row + (png_size_t)((row_width - 1) >> 3); - dp = row + (png_size_t)row_width - 1; - shift = 7 - (int)((row_width + 7) & 0x07); - for (i = 0; i < row_width; i++) - { - if ((*sp >> shift) & 0x01) - *dp = 0xff; - else - *dp = 0; - if (shift == 7) - { - shift = 0; - sp--; - } - else - shift++; - - dp--; - } - break; - } - - case 2: - { - gray = (png_uint_16)((gray&0x03)*0x55); - sp = row + (png_size_t)((row_width - 1) >> 2); - dp = row + (png_size_t)row_width - 1; - shift = (int)((3 - ((row_width + 3) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x03; - *dp = (png_byte)(value | (value << 2) | (value << 4) | - (value << 6)); - if (shift == 6) - { - shift = 0; - sp--; - } - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - gray = (png_uint_16)((gray&0x0f)*0x11); - sp = row + (png_size_t)((row_width - 1) >> 1); - dp = row + (png_size_t)row_width - 1; - shift = (int)((1 - ((row_width + 1) & 0x01)) << 2); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x0f; - *dp = (png_byte)(value | (value << 4)); - if (shift == 4) - { - shift = 0; - sp--; - } - else - shift = 4; - - dp--; - } - break; - } - } - - row_info->bit_depth = 8; - row_info->pixel_depth = 8; - row_info->rowbytes = row_width; - } - - if (trans_value != NULL) - { - if (row_info->bit_depth == 8) - { - gray = gray & 0xff; - sp = row + (png_size_t)row_width - 1; - dp = row + (png_size_t)(row_width << 1) - 1; - for (i = 0; i < row_width; i++) - { - if (*sp == gray) - *dp-- = 0; - else - *dp-- = 0xff; - *dp-- = *sp--; - } - } - - else if (row_info->bit_depth == 16) - { - png_byte gray_high = (gray >> 8) & 0xff; - png_byte gray_low = gray & 0xff; - sp = row + row_info->rowbytes - 1; - dp = row + (row_info->rowbytes << 1) - 1; - for (i = 0; i < row_width; i++) - { - if (*(sp - 1) == gray_high && *(sp) == gray_low) - { - *dp-- = 0; - *dp-- = 0; - } - else - { - *dp-- = 0xff; - *dp-- = 0xff; - } - *dp-- = *sp--; - *dp-- = *sp--; - } - } - - row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA; - row_info->channels = 2; - row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_width); - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_value) - { - if (row_info->bit_depth == 8) - { - png_byte red = trans_value->red & 0xff; - png_byte green = trans_value->green & 0xff; - png_byte blue = trans_value->blue & 0xff; - sp = row + (png_size_t)row_info->rowbytes - 1; - dp = row + (png_size_t)(row_width << 2) - 1; - for (i = 0; i < row_width; i++) - { - if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue) - *dp-- = 0; - else - *dp-- = 0xff; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - } - } - else if (row_info->bit_depth == 16) - { - png_byte red_high = (trans_value->red >> 8) & 0xff; - png_byte green_high = (trans_value->green >> 8) & 0xff; - png_byte blue_high = (trans_value->blue >> 8) & 0xff; - png_byte red_low = trans_value->red & 0xff; - png_byte green_low = trans_value->green & 0xff; - png_byte blue_low = trans_value->blue & 0xff; - sp = row + row_info->rowbytes - 1; - dp = row + (png_size_t)(row_width << 3) - 1; - for (i = 0; i < row_width; i++) - { - if (*(sp - 5) == red_high && - *(sp - 4) == red_low && - *(sp - 3) == green_high && - *(sp - 2) == green_low && - *(sp - 1) == blue_high && - *(sp ) == blue_low) - { - *dp-- = 0; - *dp-- = 0; - } - else - { - *dp-- = 0xff; - *dp-- = 0xff; - } - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - } - } - row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA; - row_info->channels = 4; - row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - } -} -#endif - -#ifdef PNG_READ_DITHER_SUPPORTED -void /* PRIVATE */ -png_do_dither(png_row_infop row_info, png_bytep row, - png_bytep palette_lookup, png_bytep dither_lookup) -{ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_dither"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB && - palette_lookup && row_info->bit_depth == 8) - { - int r, g, b, p; - sp = row; - dp = row; - for (i = 0; i < row_width; i++) - { - r = *sp++; - g = *sp++; - b = *sp++; - - /* This looks real messy, but the compiler will reduce - * it down to a reasonable formula. For example, with - * 5 bits per color, we get: - * p = (((r >> 3) & 0x1f) << 10) | - * (((g >> 3) & 0x1f) << 5) | - * ((b >> 3) & 0x1f); - */ - p = (((r >> (8 - PNG_DITHER_RED_BITS)) & - ((1 << PNG_DITHER_RED_BITS) - 1)) << - (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) | - (((g >> (8 - PNG_DITHER_GREEN_BITS)) & - ((1 << PNG_DITHER_GREEN_BITS) - 1)) << - (PNG_DITHER_BLUE_BITS)) | - ((b >> (8 - PNG_DITHER_BLUE_BITS)) & - ((1 << PNG_DITHER_BLUE_BITS) - 1)); - - *dp++ = palette_lookup[p]; - } - row_info->color_type = PNG_COLOR_TYPE_PALETTE; - row_info->channels = 1; - row_info->pixel_depth = row_info->bit_depth; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && - palette_lookup != NULL && row_info->bit_depth == 8) - { - int r, g, b, p; - sp = row; - dp = row; - for (i = 0; i < row_width; i++) - { - r = *sp++; - g = *sp++; - b = *sp++; - sp++; - - p = (((r >> (8 - PNG_DITHER_RED_BITS)) & - ((1 << PNG_DITHER_RED_BITS) - 1)) << - (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) | - (((g >> (8 - PNG_DITHER_GREEN_BITS)) & - ((1 << PNG_DITHER_GREEN_BITS) - 1)) << - (PNG_DITHER_BLUE_BITS)) | - ((b >> (8 - PNG_DITHER_BLUE_BITS)) & - ((1 << PNG_DITHER_BLUE_BITS) - 1)); - - *dp++ = palette_lookup[p]; - } - row_info->color_type = PNG_COLOR_TYPE_PALETTE; - row_info->channels = 1; - row_info->pixel_depth = row_info->bit_depth; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE && - dither_lookup && row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++, sp++) - { - *sp = dither_lookup[*sp]; - } - } - } -} -#endif - -#ifdef PNG_FLOATING_POINT_SUPPORTED -#ifdef PNG_READ_GAMMA_SUPPORTED -static PNG_CONST int png_gamma_shift[] = - {0x10, 0x21, 0x42, 0x84, 0x110, 0x248, 0x550, 0xff0, 0x00}; - -/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit - * tables, we don't make a full table if we are reducing to 8-bit in - * the future. Note also how the gamma_16 tables are segmented so that - * we don't need to allocate > 64K chunks for a full 16-bit table. - * - * See the PNG extensions document for an integer algorithm for creating - * the gamma tables. Maybe we will implement that here someday. - * - * We should only reach this point if - * - * the file_gamma is known (i.e., the gAMA or sRGB chunk is present, - * or the application has provided a file_gamma) - * - * AND - * { - * the screen_gamma is known - * OR - * - * RGB_to_gray transformation is being performed - * } - * - * AND - * { - * the screen_gamma is different from the reciprocal of the - * file_gamma by more than the specified threshold - * - * OR - * - * a background color has been specified and the file_gamma - * and screen_gamma are not 1.0, within the specified threshold. - * } - */ - -void /* PRIVATE */ -png_build_gamma_table(png_structp png_ptr) -{ - png_debug(1, "in png_build_gamma_table"); - - if (png_ptr->bit_depth <= 8) - { - int i; - double g; - - if (png_ptr->screen_gamma > .000001) - g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); - - else - g = 1.0; - - png_ptr->gamma_table = (png_bytep)png_malloc(png_ptr, - (png_uint_32)256); - - for (i = 0; i < 256; i++) - { - png_ptr->gamma_table[i] = (png_byte)(pow((double)i / 255.0, - g) * 255.0 + .5); - } - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - if (png_ptr->transformations & ((PNG_BACKGROUND) | PNG_RGB_TO_GRAY)) - { - - g = 1.0 / (png_ptr->gamma); - - png_ptr->gamma_to_1 = (png_bytep)png_malloc(png_ptr, - (png_uint_32)256); - - for (i = 0; i < 256; i++) - { - png_ptr->gamma_to_1[i] = (png_byte)(pow((double)i / 255.0, - g) * 255.0 + .5); - } - - - png_ptr->gamma_from_1 = (png_bytep)png_malloc(png_ptr, - (png_uint_32)256); - - if (png_ptr->screen_gamma > 0.000001) - g = 1.0 / png_ptr->screen_gamma; - - else - g = png_ptr->gamma; /* Probably doing rgb_to_gray */ - - for (i = 0; i < 256; i++) - { - png_ptr->gamma_from_1[i] = (png_byte)(pow((double)i / 255.0, - g) * 255.0 + .5); - - } - } -#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */ - } - else - { - double g; - int i, j, shift, num; - int sig_bit; - png_uint_32 ig; - - if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) - { - sig_bit = (int)png_ptr->sig_bit.red; - - if ((int)png_ptr->sig_bit.green > sig_bit) - sig_bit = png_ptr->sig_bit.green; - - if ((int)png_ptr->sig_bit.blue > sig_bit) - sig_bit = png_ptr->sig_bit.blue; - } - else - { - sig_bit = (int)png_ptr->sig_bit.gray; - } - - if (sig_bit > 0) - shift = 16 - sig_bit; - - else - shift = 0; - - if (png_ptr->transformations & PNG_16_TO_8) - { - if (shift < (16 - PNG_MAX_GAMMA_8)) - shift = (16 - PNG_MAX_GAMMA_8); - } - - if (shift > 8) - shift = 8; - - if (shift < 0) - shift = 0; - - png_ptr->gamma_shift = (png_byte)shift; - - num = (1 << (8 - shift)); - - if (png_ptr->screen_gamma > .000001) - g = 1.0 / (png_ptr->gamma * png_ptr->screen_gamma); - else - g = 1.0; - - png_ptr->gamma_16_table = (png_uint_16pp)png_calloc(png_ptr, - (png_uint_32)(num * png_sizeof(png_uint_16p))); - - if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND)) - { - double fin, fout; - png_uint_32 last, max; - - for (i = 0; i < num; i++) - { - png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(256 * png_sizeof(png_uint_16))); - } - - g = 1.0 / g; - last = 0; - for (i = 0; i < 256; i++) - { - fout = ((double)i + 0.5) / 256.0; - fin = pow(fout, g); - max = (png_uint_32)(fin * (double)((png_uint_32)num << 8)); - while (last <= max) - { - png_ptr->gamma_16_table[(int)(last & (0xff >> shift))] - [(int)(last >> (8 - shift))] = (png_uint_16)( - (png_uint_16)i | ((png_uint_16)i << 8)); - last++; - } - } - while (last < ((png_uint_32)num << 8)) - { - png_ptr->gamma_16_table[(int)(last & (0xff >> shift))] - [(int)(last >> (8 - shift))] = (png_uint_16)65535L; - last++; - } - } - else - { - for (i = 0; i < num; i++) - { - png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(256 * png_sizeof(png_uint_16))); - - ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4); - - for (j = 0; j < 256; j++) - { - png_ptr->gamma_16_table[i][j] = - (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) / - 65535.0, g) * 65535.0 + .5); - } - } - } - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - if (png_ptr->transformations & (PNG_BACKGROUND | PNG_RGB_TO_GRAY)) - { - - g = 1.0 / (png_ptr->gamma); - - png_ptr->gamma_16_to_1 = (png_uint_16pp)png_calloc(png_ptr, - (png_uint_32)(num * png_sizeof(png_uint_16p ))); - - for (i = 0; i < num; i++) - { - png_ptr->gamma_16_to_1[i] = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(256 * png_sizeof(png_uint_16))); - - ig = (((png_uint_32)i * - (png_uint_32)png_gamma_shift[shift]) >> 4); - for (j = 0; j < 256; j++) - { - png_ptr->gamma_16_to_1[i][j] = - (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) / - 65535.0, g) * 65535.0 + .5); - } - } - - if (png_ptr->screen_gamma > 0.000001) - g = 1.0 / png_ptr->screen_gamma; - - else - g = png_ptr->gamma; /* Probably doing rgb_to_gray */ - - png_ptr->gamma_16_from_1 = (png_uint_16pp)png_calloc(png_ptr, - (png_uint_32)(num * png_sizeof(png_uint_16p))); - - for (i = 0; i < num; i++) - { - png_ptr->gamma_16_from_1[i] = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(256 * png_sizeof(png_uint_16))); - - ig = (((png_uint_32)i * - (png_uint_32)png_gamma_shift[shift]) >> 4); - - for (j = 0; j < 256; j++) - { - png_ptr->gamma_16_from_1[i][j] = - (png_uint_16)(pow((double)(ig + ((png_uint_32)j << 8)) / - 65535.0, g) * 65535.0 + .5); - } - } - } -#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_RGB_TO_GRAY_SUPPORTED */ - } -} -#endif -/* To do: install integer version of png_build_gamma_table here */ -#endif - -#ifdef PNG_MNG_FEATURES_SUPPORTED -/* Undoes intrapixel differencing */ -void /* PRIVATE */ -png_do_read_intrapixel(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_read_intrapixel"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - (row_info->color_type & PNG_COLOR_MASK_COLOR)) - { - int bytes_per_pixel; - png_uint_32 row_width = row_info->width; - if (row_info->bit_depth == 8) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 3; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 4; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - *(rp) = (png_byte)((256 + *rp + *(rp+1))&0xff); - *(rp+2) = (png_byte)((256 + *(rp+2) + *(rp+1))&0xff); - } - } - else if (row_info->bit_depth == 16) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 6; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 8; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1); - png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3); - png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5); - png_uint_32 red = (png_uint_32)((s0 + s1 + 65536L) & 0xffffL); - png_uint_32 blue = (png_uint_32)((s2 + s1 + 65536L) & 0xffffL); - *(rp ) = (png_byte)((red >> 8) & 0xff); - *(rp+1) = (png_byte)(red & 0xff); - *(rp+4) = (png_byte)((blue >> 8) & 0xff); - *(rp+5) = (png_byte)(blue & 0xff); - } - } - } -} -#endif /* PNG_MNG_FEATURES_SUPPORTED */ -#endif /* PNG_READ_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrutil.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrutil.c deleted file mode 100644 index 1e2db31..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngrutil.c +++ /dev/null @@ -1,3382 +0,0 @@ - -/* pngrutil.c - utilities to read a PNG file - * - * Last changed in libpng 1.2.44 [June 26, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains routines that are only called from within - * libpng itself during the course of reading an image. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_READ_SUPPORTED - -#if defined(_WIN32_WCE) && (_WIN32_WCE<0x500) -# define WIN32_WCE_OLD -#endif - -#ifdef PNG_FLOATING_POINT_SUPPORTED -# ifdef WIN32_WCE_OLD -/* The strtod() function is not supported on WindowsCE */ -__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, - char **endptr) -{ - double result = 0; - int len; - wchar_t *str, *end; - - len = MultiByteToWideChar(CP_ACP, 0, nptr, -1, NULL, 0); - str = (wchar_t *)png_malloc(png_ptr, len * png_sizeof(wchar_t)); - if ( NULL != str ) - { - MultiByteToWideChar(CP_ACP, 0, nptr, -1, str, len); - result = wcstod(str, &end); - len = WideCharToMultiByte(CP_ACP, 0, end, -1, NULL, 0, NULL, NULL); - *endptr = (char *)nptr + (png_strlen(nptr) - len + 1); - png_free(png_ptr, str); - } - return result; -} -# else -# define png_strtod(p,a,b) strtod(a,b) -# endif -#endif - -png_uint_32 PNGAPI -png_get_uint_31(png_structp png_ptr, png_bytep buf) -{ -#ifdef PNG_READ_BIG_ENDIAN_SUPPORTED - png_uint_32 i = png_get_uint_32(buf); -#else - /* Avoid an extra function call by inlining the result. */ - png_uint_32 i = ((png_uint_32)(*buf) << 24) + - ((png_uint_32)(*(buf + 1)) << 16) + - ((png_uint_32)(*(buf + 2)) << 8) + - (png_uint_32)(*(buf + 3)); -#endif - if (i > PNG_UINT_31_MAX) - png_error(png_ptr, "PNG unsigned integer out of range."); - return (i); -} -#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED -/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */ -png_uint_32 PNGAPI -png_get_uint_32(png_bytep buf) -{ - png_uint_32 i = ((png_uint_32)(*buf) << 24) + - ((png_uint_32)(*(buf + 1)) << 16) + - ((png_uint_32)(*(buf + 2)) << 8) + - (png_uint_32)(*(buf + 3)); - - return (i); -} - -/* Grab a signed 32-bit integer from a buffer in big-endian format. The - * data is stored in the PNG file in two's complement format, and it is - * assumed that the machine format for signed integers is the same. - */ -png_int_32 PNGAPI -png_get_int_32(png_bytep buf) -{ - png_int_32 i = ((png_int_32)(*buf) << 24) + - ((png_int_32)(*(buf + 1)) << 16) + - ((png_int_32)(*(buf + 2)) << 8) + - (png_int_32)(*(buf + 3)); - - return (i); -} - -/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */ -png_uint_16 PNGAPI -png_get_uint_16(png_bytep buf) -{ - png_uint_16 i = (png_uint_16)(((png_uint_16)(*buf) << 8) + - (png_uint_16)(*(buf + 1))); - - return (i); -} -#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */ - -/* Read the chunk header (length + type name). - * Put the type name into png_ptr->chunk_name, and return the length. - */ -png_uint_32 /* PRIVATE */ -png_read_chunk_header(png_structp png_ptr) -{ - png_byte buf[8]; - png_uint_32 length; - - /* Read the length and the chunk name */ - png_read_data(png_ptr, buf, 8); - length = png_get_uint_31(png_ptr, buf); - - /* Put the chunk name into png_ptr->chunk_name */ - png_memcpy(png_ptr->chunk_name, buf + 4, 4); - - png_debug2(0, "Reading %s chunk, length = %lu", - png_ptr->chunk_name, length); - - /* Reset the crc and run it over the chunk name */ - png_reset_crc(png_ptr); - png_calculate_crc(png_ptr, png_ptr->chunk_name, 4); - - /* Check to see if chunk name is valid */ - png_check_chunk_name(png_ptr, png_ptr->chunk_name); - - return length; -} - -/* Read data, and (optionally) run it through the CRC. */ -void /* PRIVATE */ -png_crc_read(png_structp png_ptr, png_bytep buf, png_size_t length) -{ - if (png_ptr == NULL) - return; - png_read_data(png_ptr, buf, length); - png_calculate_crc(png_ptr, buf, length); -} - -/* Optionally skip data and then check the CRC. Depending on whether we - * are reading a ancillary or critical chunk, and how the program has set - * things up, we may calculate the CRC on the data and print a message. - * Returns '1' if there was a CRC error, '0' otherwise. - */ -int /* PRIVATE */ -png_crc_finish(png_structp png_ptr, png_uint_32 skip) -{ - png_size_t i; - png_size_t istop = png_ptr->zbuf_size; - - for (i = (png_size_t)skip; i > istop; i -= istop) - { - png_crc_read(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); - } - if (i) - { - png_crc_read(png_ptr, png_ptr->zbuf, i); - } - - if (png_crc_error(png_ptr)) - { - if (((png_ptr->chunk_name[0] & 0x20) && /* Ancillary */ - !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) || - (!(png_ptr->chunk_name[0] & 0x20) && /* Critical */ - (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE))) - { - png_chunk_warning(png_ptr, "CRC error"); - } - else - { - png_chunk_error(png_ptr, "CRC error"); - } - return (1); - } - - return (0); -} - -/* Compare the CRC stored in the PNG file with that calculated by libpng from - * the data it has read thus far. - */ -int /* PRIVATE */ -png_crc_error(png_structp png_ptr) -{ - png_byte crc_bytes[4]; - png_uint_32 crc; - int need_crc = 1; - - if (png_ptr->chunk_name[0] & 0x20) /* ancillary */ - { - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == - (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN)) - need_crc = 0; - } - else /* critical */ - { - if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) - need_crc = 0; - } - - png_read_data(png_ptr, crc_bytes, 4); - - if (need_crc) - { - crc = png_get_uint_32(crc_bytes); - return ((int)(crc != png_ptr->crc)); - } - else - return (0); -} - -#if defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) || \ - defined(PNG_READ_iCCP_SUPPORTED) -static png_size_t -png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size, - png_bytep output, png_size_t output_size) -{ - png_size_t count = 0; - - png_ptr->zstream.next_in = (png_bytep)data; /* const_cast: VALID */ - png_ptr->zstream.avail_in = size; - - while (1) - { - int ret, avail; - - /* Reset the output buffer each time round - we empty it - * after every inflate call. - */ - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = png_ptr->zbuf_size; - - ret = inflate(&png_ptr->zstream, Z_NO_FLUSH); - avail = png_ptr->zbuf_size - png_ptr->zstream.avail_out; - - /* First copy/count any new output - but only if we didn't - * get an error code. - */ - if ((ret == Z_OK || ret == Z_STREAM_END) && avail > 0) - { - if (output != 0 && output_size > count) - { - int copy = output_size - count; - if (avail < copy) copy = avail; - png_memcpy(output + count, png_ptr->zbuf, copy); - } - count += avail; - } - - if (ret == Z_OK) - continue; - - /* Termination conditions - always reset the zstream, it - * must be left in inflateInit state. - */ - png_ptr->zstream.avail_in = 0; - inflateReset(&png_ptr->zstream); - - if (ret == Z_STREAM_END) - return count; /* NOTE: may be zero. */ - - /* Now handle the error codes - the API always returns 0 - * and the error message is dumped into the uncompressed - * buffer if available. - */ - { - PNG_CONST char *msg; - if (png_ptr->zstream.msg != 0) - msg = png_ptr->zstream.msg; - else - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char umsg[52]; - - switch (ret) - { - case Z_BUF_ERROR: - msg = "Buffer error in compressed datastream in %s chunk"; - break; - case Z_DATA_ERROR: - msg = "Data error in compressed datastream in %s chunk"; - break; - default: - msg = "Incomplete compressed datastream in %s chunk"; - break; - } - - png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name); - msg = umsg; -#else - msg = "Damaged compressed datastream in chunk other than IDAT"; -#endif - } - - png_warning(png_ptr, msg); - } - - /* 0 means an error - notice that this code simple ignores - * zero length compressed chunks as a result. - */ - return 0; - } -} - -/* - * Decompress trailing data in a chunk. The assumption is that chunkdata - * points at an allocated area holding the contents of a chunk with a - * trailing compressed part. What we get back is an allocated area - * holding the original prefix part and an uncompressed version of the - * trailing part (the malloc area passed in is freed). - */ -void /* PRIVATE */ -png_decompress_chunk(png_structp png_ptr, int comp_type, - png_size_t chunklength, - png_size_t prefix_size, png_size_t *newlength) -{ - /* The caller should guarantee this */ - if (prefix_size > chunklength) - { - /* The recovery is to delete the chunk. */ - png_warning(png_ptr, "invalid chunklength"); - prefix_size = 0; /* To delete everything */ - } - - else if (comp_type == PNG_COMPRESSION_TYPE_BASE) - { - png_size_t expanded_size = png_inflate(png_ptr, - (png_bytep)(png_ptr->chunkdata + prefix_size), - chunklength - prefix_size, - 0/*output*/, 0/*output size*/); - - /* Now check the limits on this chunk - if the limit fails the - * compressed data will be removed, the prefix will remain. - */ -#ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED - if (png_ptr->user_chunk_malloc_max && - (prefix_size + expanded_size >= png_ptr->user_chunk_malloc_max - 1)) -#else -# ifdef PNG_USER_CHUNK_MALLOC_MAX - if ((PNG_USER_CHUNK_MALLOC_MAX > 0) && - prefix_size + expanded_size >= PNG_USER_CHUNK_MALLOC_MAX - 1) -# endif -#endif - png_warning(png_ptr, "Exceeded size limit while expanding chunk"); - - /* If the size is zero either there was an error and a message - * has already been output (warning) or the size really is zero - * and we have nothing to do - the code will exit through the - * error case below. - */ -#if defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED) || \ - defined(PNG_USER_CHUNK_MALLOC_MAX) - else -#endif - if (expanded_size > 0) - { - /* Success (maybe) - really uncompress the chunk. */ - png_size_t new_size = 0; - png_charp text = png_malloc_warn(png_ptr, - prefix_size + expanded_size + 1); - - if (text != NULL) - { - png_memcpy(text, png_ptr->chunkdata, prefix_size); - new_size = png_inflate(png_ptr, - (png_bytep)(png_ptr->chunkdata + prefix_size), - chunklength - prefix_size, - (png_bytep)(text + prefix_size), expanded_size); - text[prefix_size + expanded_size] = 0; /* just in case */ - - if (new_size == expanded_size) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = text; - *newlength = prefix_size + expanded_size; - return; /* The success return! */ - } - - png_warning(png_ptr, "png_inflate logic error"); - png_free(png_ptr, text); - } - else - png_warning(png_ptr, "Not enough memory to decompress chunk."); - } - } - - else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */ - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char umsg[50]; - - png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d", - comp_type); - png_warning(png_ptr, umsg); -#else - png_warning(png_ptr, "Unknown zTXt compression type"); -#endif - - /* The recovery is to simply drop the data. */ - } - - /* Generic error return - leave the prefix, delete the compressed - * data, reallocate the chunkdata to remove the potentially large - * amount of compressed data. - */ - { - png_charp text = png_malloc_warn(png_ptr, prefix_size + 1); - if (text != NULL) - { - if (prefix_size > 0) - png_memcpy(text, png_ptr->chunkdata, prefix_size); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = text; - - /* This is an extra zero in the 'uncompressed' part. */ - *(png_ptr->chunkdata + prefix_size) = 0x00; - } - /* Ignore a malloc error here - it is safe. */ - } - - *newlength = prefix_size; -} -#endif - -/* Read and check the IDHR chunk */ -void /* PRIVATE */ -png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte buf[13]; - png_uint_32 width, height; - int bit_depth, color_type, compression_type, filter_type; - int interlace_type; - - png_debug(1, "in png_handle_IHDR"); - - if (png_ptr->mode & PNG_HAVE_IHDR) - png_error(png_ptr, "Out of place IHDR"); - - /* Check the length */ - if (length != 13) - png_error(png_ptr, "Invalid IHDR chunk"); - - png_ptr->mode |= PNG_HAVE_IHDR; - - png_crc_read(png_ptr, buf, 13); - png_crc_finish(png_ptr, 0); - - width = png_get_uint_31(png_ptr, buf); - height = png_get_uint_31(png_ptr, buf + 4); - bit_depth = buf[8]; - color_type = buf[9]; - compression_type = buf[10]; - filter_type = buf[11]; - interlace_type = buf[12]; - - /* Set internal variables */ - png_ptr->width = width; - png_ptr->height = height; - png_ptr->bit_depth = (png_byte)bit_depth; - png_ptr->interlaced = (png_byte)interlace_type; - png_ptr->color_type = (png_byte)color_type; -#ifdef PNG_MNG_FEATURES_SUPPORTED - png_ptr->filter_type = (png_byte)filter_type; -#endif - png_ptr->compression_type = (png_byte)compression_type; - - /* Find number of channels */ - switch (png_ptr->color_type) - { - case PNG_COLOR_TYPE_GRAY: - case PNG_COLOR_TYPE_PALETTE: - png_ptr->channels = 1; - break; - - case PNG_COLOR_TYPE_RGB: - png_ptr->channels = 3; - break; - - case PNG_COLOR_TYPE_GRAY_ALPHA: - png_ptr->channels = 2; - break; - - case PNG_COLOR_TYPE_RGB_ALPHA: - png_ptr->channels = 4; - break; - } - - /* Set up other useful info */ - png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * - png_ptr->channels); - png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); - png_debug1(3, "bit_depth = %d", png_ptr->bit_depth); - png_debug1(3, "channels = %d", png_ptr->channels); - png_debug1(3, "rowbytes = %lu", png_ptr->rowbytes); - png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, - color_type, interlace_type, compression_type, filter_type); -} - -/* Read and check the palette */ -void /* PRIVATE */ -png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_color palette[PNG_MAX_PALETTE_LENGTH]; - int num, i; -#ifdef PNG_POINTER_INDEXING_SUPPORTED - png_colorp pal_ptr; -#endif - - png_debug(1, "in png_handle_PLTE"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before PLTE"); - - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid PLTE after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - - else if (png_ptr->mode & PNG_HAVE_PLTE) - png_error(png_ptr, "Duplicate PLTE chunk"); - - png_ptr->mode |= PNG_HAVE_PLTE; - - if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR)) - { - png_warning(png_ptr, - "Ignoring PLTE chunk in grayscale PNG"); - png_crc_finish(png_ptr, length); - return; - } -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) - { - png_crc_finish(png_ptr, length); - return; - } -#endif - - if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3) - { - if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) - { - png_warning(png_ptr, "Invalid palette chunk"); - png_crc_finish(png_ptr, length); - return; - } - - else - { - png_error(png_ptr, "Invalid palette chunk"); - } - } - - num = (int)length / 3; - -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++) - { - png_byte buf[3]; - - png_crc_read(png_ptr, buf, 3); - pal_ptr->red = buf[0]; - pal_ptr->green = buf[1]; - pal_ptr->blue = buf[2]; - } -#else - for (i = 0; i < num; i++) - { - png_byte buf[3]; - - png_crc_read(png_ptr, buf, 3); - /* Don't depend upon png_color being any order */ - palette[i].red = buf[0]; - palette[i].green = buf[1]; - palette[i].blue = buf[2]; - } -#endif - - /* If we actually NEED the PLTE chunk (ie for a paletted image), we do - * whatever the normal CRC configuration tells us. However, if we - * have an RGB image, the PLTE can be considered ancillary, so - * we will act as though it is. - */ -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) -#endif - { - png_crc_finish(png_ptr, 0); - } -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */ - { - /* If we don't want to use the data from an ancillary chunk, - we have two options: an error abort, or a warning and we - ignore the data in this chunk (which should be OK, since - it's considered ancillary for a RGB or RGBA image). */ - if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE)) - { - if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) - { - png_chunk_error(png_ptr, "CRC error"); - } - else - { - png_chunk_warning(png_ptr, "CRC error"); - return; - } - } - /* Otherwise, we (optionally) emit a warning and use the chunk. */ - else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)) - { - png_chunk_warning(png_ptr, "CRC error"); - } - } -#endif - - png_set_PLTE(png_ptr, info_ptr, palette, num); - -#ifdef PNG_READ_tRNS_SUPPORTED - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS)) - { - if (png_ptr->num_trans > (png_uint_16)num) - { - png_warning(png_ptr, "Truncating incorrect tRNS chunk length"); - png_ptr->num_trans = (png_uint_16)num; - } - if (info_ptr->num_trans > (png_uint_16)num) - { - png_warning(png_ptr, "Truncating incorrect info tRNS chunk length"); - info_ptr->num_trans = (png_uint_16)num; - } - } - } -#endif - -} - -void /* PRIVATE */ -png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_debug(1, "in png_handle_IEND"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT)) - { - png_error(png_ptr, "No image in file"); - } - - png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); - - if (length != 0) - { - png_warning(png_ptr, "Incorrect IEND chunk length"); - } - png_crc_finish(png_ptr, length); - - info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ -} - -#ifdef PNG_READ_gAMA_SUPPORTED -void /* PRIVATE */ -png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_fixed_point igamma; -#ifdef PNG_FLOATING_POINT_SUPPORTED - float file_gamma; -#endif - png_byte buf[4]; - - png_debug(1, "in png_handle_gAMA"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before gAMA"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid gAMA after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->mode & PNG_HAVE_PLTE) - /* Should be an error, but we can cope with it */ - png_warning(png_ptr, "Out of place gAMA chunk"); - - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA) -#ifdef PNG_READ_sRGB_SUPPORTED - && !(info_ptr->valid & PNG_INFO_sRGB) -#endif - ) - { - png_warning(png_ptr, "Duplicate gAMA chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (length != 4) - { - png_warning(png_ptr, "Incorrect gAMA chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 4); - if (png_crc_finish(png_ptr, 0)) - return; - - igamma = (png_fixed_point)png_get_uint_32(buf); - /* Check for zero gamma */ - if (igamma == 0) - { - png_warning(png_ptr, - "Ignoring gAMA chunk with gamma=0"); - return; - } - -#ifdef PNG_READ_sRGB_SUPPORTED - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)) - if (PNG_OUT_OF_RANGE(igamma, 45500L, 500)) - { - png_warning(png_ptr, - "Ignoring incorrect gAMA value when sRGB is also present"); -#ifdef PNG_CONSOLE_IO_SUPPORTED - fprintf(stderr, "gamma = (%d/100000)", (int)igamma); -#endif - return; - } -#endif /* PNG_READ_sRGB_SUPPORTED */ - -#ifdef PNG_FLOATING_POINT_SUPPORTED - file_gamma = (float)igamma / (float)100000.0; -# ifdef PNG_READ_GAMMA_SUPPORTED - png_ptr->gamma = file_gamma; -# endif - png_set_gAMA(png_ptr, info_ptr, file_gamma); -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - png_set_gAMA_fixed(png_ptr, info_ptr, igamma); -#endif -} -#endif - -#ifdef PNG_READ_sBIT_SUPPORTED -void /* PRIVATE */ -png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_size_t truelen; - png_byte buf[4]; - - png_debug(1, "in png_handle_sBIT"); - - buf[0] = buf[1] = buf[2] = buf[3] = 0; - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before sBIT"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid sBIT after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->mode & PNG_HAVE_PLTE) - { - /* Should be an error, but we can cope with it */ - png_warning(png_ptr, "Out of place sBIT chunk"); - } - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)) - { - png_warning(png_ptr, "Duplicate sBIT chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - truelen = 3; - else - truelen = (png_size_t)png_ptr->channels; - - if (length != truelen || length > 4) - { - png_warning(png_ptr, "Incorrect sBIT chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, truelen); - if (png_crc_finish(png_ptr, 0)) - return; - - if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) - { - png_ptr->sig_bit.red = buf[0]; - png_ptr->sig_bit.green = buf[1]; - png_ptr->sig_bit.blue = buf[2]; - png_ptr->sig_bit.alpha = buf[3]; - } - else - { - png_ptr->sig_bit.gray = buf[0]; - png_ptr->sig_bit.red = buf[0]; - png_ptr->sig_bit.green = buf[0]; - png_ptr->sig_bit.blue = buf[0]; - png_ptr->sig_bit.alpha = buf[1]; - } - png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit)); -} -#endif - -#ifdef PNG_READ_cHRM_SUPPORTED -void /* PRIVATE */ -png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte buf[32]; -#ifdef PNG_FLOATING_POINT_SUPPORTED - float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; -#endif - png_fixed_point int_x_white, int_y_white, int_x_red, int_y_red, int_x_green, - int_y_green, int_x_blue, int_y_blue; - - png_uint_32 uint_x, uint_y; - - png_debug(1, "in png_handle_cHRM"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before cHRM"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid cHRM after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->mode & PNG_HAVE_PLTE) - /* Should be an error, but we can cope with it */ - png_warning(png_ptr, "Missing PLTE before cHRM"); - - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM) -#ifdef PNG_READ_sRGB_SUPPORTED - && !(info_ptr->valid & PNG_INFO_sRGB) -#endif - ) - { - png_warning(png_ptr, "Duplicate cHRM chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (length != 32) - { - png_warning(png_ptr, "Incorrect cHRM chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 32); - if (png_crc_finish(png_ptr, 0)) - return; - - uint_x = png_get_uint_32(buf); - uint_y = png_get_uint_32(buf + 4); - int_x_white = (png_fixed_point)uint_x; - int_y_white = (png_fixed_point)uint_y; - - uint_x = png_get_uint_32(buf + 8); - uint_y = png_get_uint_32(buf + 12); - int_x_red = (png_fixed_point)uint_x; - int_y_red = (png_fixed_point)uint_y; - - uint_x = png_get_uint_32(buf + 16); - uint_y = png_get_uint_32(buf + 20); - int_x_green = (png_fixed_point)uint_x; - int_y_green = (png_fixed_point)uint_y; - - uint_x = png_get_uint_32(buf + 24); - uint_y = png_get_uint_32(buf + 28); - int_x_blue = (png_fixed_point)uint_x; - int_y_blue = (png_fixed_point)uint_y; - -#ifdef PNG_FLOATING_POINT_SUPPORTED - white_x = (float)int_x_white / (float)100000.0; - white_y = (float)int_y_white / (float)100000.0; - red_x = (float)int_x_red / (float)100000.0; - red_y = (float)int_y_red / (float)100000.0; - green_x = (float)int_x_green / (float)100000.0; - green_y = (float)int_y_green / (float)100000.0; - blue_x = (float)int_x_blue / (float)100000.0; - blue_y = (float)int_y_blue / (float)100000.0; -#endif - -#ifdef PNG_READ_sRGB_SUPPORTED - if ((info_ptr != NULL) && (info_ptr->valid & PNG_INFO_sRGB)) - { - if (PNG_OUT_OF_RANGE(int_x_white, 31270, 1000) || - PNG_OUT_OF_RANGE(int_y_white, 32900, 1000) || - PNG_OUT_OF_RANGE(int_x_red, 64000L, 1000) || - PNG_OUT_OF_RANGE(int_y_red, 33000, 1000) || - PNG_OUT_OF_RANGE(int_x_green, 30000, 1000) || - PNG_OUT_OF_RANGE(int_y_green, 60000L, 1000) || - PNG_OUT_OF_RANGE(int_x_blue, 15000, 1000) || - PNG_OUT_OF_RANGE(int_y_blue, 6000, 1000)) - { - png_warning(png_ptr, - "Ignoring incorrect cHRM value when sRGB is also present"); -#ifdef PNG_CONSOLE_IO_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED - fprintf(stderr, "wx=%f, wy=%f, rx=%f, ry=%f\n", - white_x, white_y, red_x, red_y); - fprintf(stderr, "gx=%f, gy=%f, bx=%f, by=%f\n", - green_x, green_y, blue_x, blue_y); -#else - fprintf(stderr, "wx=%ld, wy=%ld, rx=%ld, ry=%ld\n", - (long)int_x_white, (long)int_y_white, - (long)int_x_red, (long)int_y_red); - fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n", - (long)int_x_green, (long)int_y_green, - (long)int_x_blue, (long)int_y_blue); -#endif -#endif /* PNG_CONSOLE_IO_SUPPORTED */ - } - return; - } -#endif /* PNG_READ_sRGB_SUPPORTED */ - -#ifdef PNG_FLOATING_POINT_SUPPORTED - png_set_cHRM(png_ptr, info_ptr, - white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y); -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - png_set_cHRM_fixed(png_ptr, info_ptr, - int_x_white, int_y_white, int_x_red, int_y_red, int_x_green, - int_y_green, int_x_blue, int_y_blue); -#endif -} -#endif - -#ifdef PNG_READ_sRGB_SUPPORTED -void /* PRIVATE */ -png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - int intent; - png_byte buf[1]; - - png_debug(1, "in png_handle_sRGB"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before sRGB"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid sRGB after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->mode & PNG_HAVE_PLTE) - /* Should be an error, but we can cope with it */ - png_warning(png_ptr, "Out of place sRGB chunk"); - - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)) - { - png_warning(png_ptr, "Duplicate sRGB chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (length != 1) - { - png_warning(png_ptr, "Incorrect sRGB chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 1); - if (png_crc_finish(png_ptr, 0)) - return; - - intent = buf[0]; - /* Check for bad intent */ - if (intent >= PNG_sRGB_INTENT_LAST) - { - png_warning(png_ptr, "Unknown sRGB intent"); - return; - } - -#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED) - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)) - { - png_fixed_point igamma; -#ifdef PNG_FIXED_POINT_SUPPORTED - igamma=info_ptr->int_gamma; -#else -# ifdef PNG_FLOATING_POINT_SUPPORTED - igamma=(png_fixed_point)(info_ptr->gamma * 100000.); -# endif -#endif - if (PNG_OUT_OF_RANGE(igamma, 45500L, 500)) - { - png_warning(png_ptr, - "Ignoring incorrect gAMA value when sRGB is also present"); -#ifdef PNG_CONSOLE_IO_SUPPORTED -# ifdef PNG_FIXED_POINT_SUPPORTED - fprintf(stderr, "incorrect gamma=(%d/100000)\n", - (int)png_ptr->int_gamma); -# else -# ifdef PNG_FLOATING_POINT_SUPPORTED - fprintf(stderr, "incorrect gamma=%f\n", png_ptr->gamma); -# endif -# endif -#endif - } - } -#endif /* PNG_READ_gAMA_SUPPORTED */ - -#ifdef PNG_READ_cHRM_SUPPORTED -#ifdef PNG_FIXED_POINT_SUPPORTED - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)) - if (PNG_OUT_OF_RANGE(info_ptr->int_x_white, 31270, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_y_white, 32900, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_x_red, 64000L, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_y_red, 33000, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_x_green, 30000, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_y_green, 60000L, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_x_blue, 15000, 1000) || - PNG_OUT_OF_RANGE(info_ptr->int_y_blue, 6000, 1000)) - { - png_warning(png_ptr, - "Ignoring incorrect cHRM value when sRGB is also present"); - } -#endif /* PNG_FIXED_POINT_SUPPORTED */ -#endif /* PNG_READ_cHRM_SUPPORTED */ - - png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr, intent); -} -#endif /* PNG_READ_sRGB_SUPPORTED */ - -#ifdef PNG_READ_iCCP_SUPPORTED -void /* PRIVATE */ -png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -/* Note: this does not properly handle chunks that are > 64K under DOS */ -{ - png_byte compression_type; - png_bytep pC; - png_charp profile; - png_uint_32 skip = 0; - png_uint_32 profile_size, profile_length; - png_size_t slength, prefix_length, data_length; - - png_debug(1, "in png_handle_iCCP"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before iCCP"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid iCCP after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->mode & PNG_HAVE_PLTE) - /* Should be an error, but we can cope with it */ - png_warning(png_ptr, "Out of place iCCP chunk"); - - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)) - { - png_warning(png_ptr, "Duplicate iCCP chunk"); - png_crc_finish(png_ptr, length); - return; - } - -#ifdef PNG_MAX_MALLOC_64K - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "iCCP chunk too large to fit in memory"); - skip = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1); - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - - if (png_crc_finish(png_ptr, skip)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; - - for (profile = png_ptr->chunkdata; *profile; profile++) - /* Empty loop to find end of name */ ; - - ++profile; - - /* There should be at least one zero (the compression type byte) - * following the separator, and we should be on it - */ - if ( profile >= png_ptr->chunkdata + slength - 1) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "Malformed iCCP chunk"); - return; - } - - /* Compression_type should always be zero */ - compression_type = *profile++; - if (compression_type) - { - png_warning(png_ptr, "Ignoring nonzero compression type in iCCP chunk"); - compression_type = 0x00; /* Reset it to zero (libpng-1.0.6 through 1.0.8 - wrote nonzero) */ - } - - prefix_length = profile - png_ptr->chunkdata; - png_decompress_chunk(png_ptr, compression_type, - slength, prefix_length, &data_length); - - profile_length = data_length - prefix_length; - - if ( prefix_length > data_length || profile_length < 4) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "Profile size field missing from iCCP chunk"); - return; - } - - /* Check the profile_size recorded in the first 32 bits of the ICC profile */ - pC = (png_bytep)(png_ptr->chunkdata + prefix_length); - profile_size = ((*(pC ))<<24) | - ((*(pC + 1))<<16) | - ((*(pC + 2))<< 8) | - ((*(pC + 3)) ); - - if (profile_size < profile_length) - profile_length = profile_size; - - if (profile_size > profile_length) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "Ignoring truncated iCCP profile."); - return; - } - - png_set_iCCP(png_ptr, info_ptr, png_ptr->chunkdata, - compression_type, png_ptr->chunkdata + prefix_length, profile_length); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; -} -#endif /* PNG_READ_iCCP_SUPPORTED */ - -#ifdef PNG_READ_sPLT_SUPPORTED -void /* PRIVATE */ -png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -/* Note: this does not properly handle chunks that are > 64K under DOS */ -{ - png_bytep entry_start; - png_sPLT_t new_palette; -#ifdef PNG_POINTER_INDEXING_SUPPORTED - png_sPLT_entryp pp; -#endif - int data_length, entry_size, i; - png_uint_32 skip = 0; - png_size_t slength; - - png_debug(1, "in png_handle_sPLT"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for sPLT"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before sPLT"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid sPLT after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - -#ifdef PNG_MAX_MALLOC_64K - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "sPLT chunk too large to fit in memory"); - skip = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = (png_charp)png_malloc(png_ptr, length + 1); - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - - if (png_crc_finish(png_ptr, skip)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; - - for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start; - entry_start++) - /* Empty loop to find end of name */ ; - ++entry_start; - - /* A sample depth should follow the separator, and we should be on it */ - if (entry_start > (png_bytep)png_ptr->chunkdata + slength - 2) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "malformed sPLT chunk"); - return; - } - - new_palette.depth = *entry_start++; - entry_size = (new_palette.depth == 8 ? 6 : 10); - data_length = (slength - (entry_start - (png_bytep)png_ptr->chunkdata)); - - /* Integrity-check the data length */ - if (data_length % entry_size) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "sPLT chunk has bad length"); - return; - } - - new_palette.nentries = (png_int_32) ( data_length / entry_size); - if ((png_uint_32) new_palette.nentries > - (png_uint_32) (PNG_SIZE_MAX / png_sizeof(png_sPLT_entry))) - { - png_warning(png_ptr, "sPLT chunk too long"); - return; - } - new_palette.entries = (png_sPLT_entryp)png_malloc_warn( - png_ptr, new_palette.nentries * png_sizeof(png_sPLT_entry)); - if (new_palette.entries == NULL) - { - png_warning(png_ptr, "sPLT chunk requires too much memory"); - return; - } - -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (i = 0; i < new_palette.nentries; i++) - { - pp = new_palette.entries + i; - - if (new_palette.depth == 8) - { - pp->red = *entry_start++; - pp->green = *entry_start++; - pp->blue = *entry_start++; - pp->alpha = *entry_start++; - } - else - { - pp->red = png_get_uint_16(entry_start); entry_start += 2; - pp->green = png_get_uint_16(entry_start); entry_start += 2; - pp->blue = png_get_uint_16(entry_start); entry_start += 2; - pp->alpha = png_get_uint_16(entry_start); entry_start += 2; - } - pp->frequency = png_get_uint_16(entry_start); entry_start += 2; - } -#else - pp = new_palette.entries; - for (i = 0; i < new_palette.nentries; i++) - { - - if (new_palette.depth == 8) - { - pp[i].red = *entry_start++; - pp[i].green = *entry_start++; - pp[i].blue = *entry_start++; - pp[i].alpha = *entry_start++; - } - else - { - pp[i].red = png_get_uint_16(entry_start); entry_start += 2; - pp[i].green = png_get_uint_16(entry_start); entry_start += 2; - pp[i].blue = png_get_uint_16(entry_start); entry_start += 2; - pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2; - } - pp->frequency = png_get_uint_16(entry_start); entry_start += 2; - } -#endif - - /* Discard all chunk data except the name and stash that */ - new_palette.name = png_ptr->chunkdata; - - png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_free(png_ptr, new_palette.entries); -} -#endif /* PNG_READ_sPLT_SUPPORTED */ - -#ifdef PNG_READ_tRNS_SUPPORTED -void /* PRIVATE */ -png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte readbuf[PNG_MAX_PALETTE_LENGTH]; - - png_debug(1, "in png_handle_tRNS"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before tRNS"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid tRNS after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS)) - { - png_warning(png_ptr, "Duplicate tRNS chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - png_byte buf[2]; - - if (length != 2) - { - png_warning(png_ptr, "Incorrect tRNS chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 2); - png_ptr->num_trans = 1; - png_ptr->trans_values.gray = png_get_uint_16(buf); - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - png_byte buf[6]; - - if (length != 6) - { - png_warning(png_ptr, "Incorrect tRNS chunk length"); - png_crc_finish(png_ptr, length); - return; - } - png_crc_read(png_ptr, buf, (png_size_t)length); - png_ptr->num_trans = 1; - png_ptr->trans_values.red = png_get_uint_16(buf); - png_ptr->trans_values.green = png_get_uint_16(buf + 2); - png_ptr->trans_values.blue = png_get_uint_16(buf + 4); - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (!(png_ptr->mode & PNG_HAVE_PLTE)) - { - /* Should be an error, but we can cope with it. */ - png_warning(png_ptr, "Missing PLTE before tRNS"); - } - if (length > (png_uint_32)png_ptr->num_palette || - length > PNG_MAX_PALETTE_LENGTH) - { - png_warning(png_ptr, "Incorrect tRNS chunk length"); - png_crc_finish(png_ptr, length); - return; - } - if (length == 0) - { - png_warning(png_ptr, "Zero length tRNS chunk"); - png_crc_finish(png_ptr, length); - return; - } - png_crc_read(png_ptr, readbuf, (png_size_t)length); - png_ptr->num_trans = (png_uint_16)length; - } - else - { - png_warning(png_ptr, "tRNS chunk not allowed with alpha channel"); - png_crc_finish(png_ptr, length); - return; - } - - if (png_crc_finish(png_ptr, 0)) - { - png_ptr->num_trans = 0; - return; - } - - png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans, - &(png_ptr->trans_values)); -} -#endif - -#ifdef PNG_READ_bKGD_SUPPORTED -void /* PRIVATE */ -png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_size_t truelen; - png_byte buf[6]; - - png_debug(1, "in png_handle_bKGD"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before bKGD"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid bKGD after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) - { - png_warning(png_ptr, "Missing PLTE before bKGD"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)) - { - png_warning(png_ptr, "Duplicate bKGD chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - truelen = 1; - else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR) - truelen = 6; - else - truelen = 2; - - if (length != truelen) - { - png_warning(png_ptr, "Incorrect bKGD chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, truelen); - if (png_crc_finish(png_ptr, 0)) - return; - - /* We convert the index value into RGB components so that we can allow - * arbitrary RGB values for background when we have transparency, and - * so it is easy to determine the RGB values of the background color - * from the info_ptr struct. */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_ptr->background.index = buf[0]; - if (info_ptr && info_ptr->num_palette) - { - if (buf[0] >= info_ptr->num_palette) - { - png_warning(png_ptr, "Incorrect bKGD chunk index value"); - return; - } - png_ptr->background.red = - (png_uint_16)png_ptr->palette[buf[0]].red; - png_ptr->background.green = - (png_uint_16)png_ptr->palette[buf[0]].green; - png_ptr->background.blue = - (png_uint_16)png_ptr->palette[buf[0]].blue; - } - } - else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */ - { - png_ptr->background.red = - png_ptr->background.green = - png_ptr->background.blue = - png_ptr->background.gray = png_get_uint_16(buf); - } - else - { - png_ptr->background.red = png_get_uint_16(buf); - png_ptr->background.green = png_get_uint_16(buf + 2); - png_ptr->background.blue = png_get_uint_16(buf + 4); - } - - png_set_bKGD(png_ptr, info_ptr, &(png_ptr->background)); -} -#endif - -#ifdef PNG_READ_hIST_SUPPORTED -void /* PRIVATE */ -png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - unsigned int num, i; - png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH]; - - png_debug(1, "in png_handle_hIST"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before hIST"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid hIST after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (!(png_ptr->mode & PNG_HAVE_PLTE)) - { - png_warning(png_ptr, "Missing PLTE before hIST"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)) - { - png_warning(png_ptr, "Duplicate hIST chunk"); - png_crc_finish(png_ptr, length); - return; - } - - num = length / 2 ; - if (num != (unsigned int) png_ptr->num_palette || num > - (unsigned int) PNG_MAX_PALETTE_LENGTH) - { - png_warning(png_ptr, "Incorrect hIST chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - for (i = 0; i < num; i++) - { - png_byte buf[2]; - - png_crc_read(png_ptr, buf, 2); - readbuf[i] = png_get_uint_16(buf); - } - - if (png_crc_finish(png_ptr, 0)) - return; - - png_set_hIST(png_ptr, info_ptr, readbuf); -} -#endif - -#ifdef PNG_READ_pHYs_SUPPORTED -void /* PRIVATE */ -png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte buf[9]; - png_uint_32 res_x, res_y; - int unit_type; - - png_debug(1, "in png_handle_pHYs"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before pHYs"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid pHYs after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)) - { - png_warning(png_ptr, "Duplicate pHYs chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (length != 9) - { - png_warning(png_ptr, "Incorrect pHYs chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 9); - if (png_crc_finish(png_ptr, 0)) - return; - - res_x = png_get_uint_32(buf); - res_y = png_get_uint_32(buf + 4); - unit_type = buf[8]; - png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type); -} -#endif - -#ifdef PNG_READ_oFFs_SUPPORTED -void /* PRIVATE */ -png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte buf[9]; - png_int_32 offset_x, offset_y; - int unit_type; - - png_debug(1, "in png_handle_oFFs"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before oFFs"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid oFFs after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)) - { - png_warning(png_ptr, "Duplicate oFFs chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (length != 9) - { - png_warning(png_ptr, "Incorrect oFFs chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 9); - if (png_crc_finish(png_ptr, 0)) - return; - - offset_x = png_get_int_32(buf); - offset_y = png_get_int_32(buf + 4); - unit_type = buf[8]; - png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type); -} -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED -/* Read the pCAL chunk (described in the PNG Extensions document) */ -void /* PRIVATE */ -png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_int_32 X0, X1; - png_byte type, nparams; - png_charp buf, units, endptr; - png_charpp params; - png_size_t slength; - int i; - - png_debug(1, "in png_handle_pCAL"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before pCAL"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid pCAL after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)) - { - png_warning(png_ptr, "Duplicate pCAL chunk"); - png_crc_finish(png_ptr, length); - return; - } - - png_debug1(2, "Allocating and reading pCAL chunk data (%lu bytes)", - length + 1); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1); - if (png_ptr->chunkdata == NULL) - { - png_warning(png_ptr, "No memory for pCAL purpose."); - return; - } - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - - if (png_crc_finish(png_ptr, 0)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */ - - png_debug(3, "Finding end of pCAL purpose string"); - for (buf = png_ptr->chunkdata; *buf; buf++) - /* Empty loop */ ; - - endptr = png_ptr->chunkdata + slength; - - /* We need to have at least 12 bytes after the purpose string - in order to get the parameter information. */ - if (endptr <= buf + 12) - { - png_warning(png_ptr, "Invalid pCAL data"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_debug(3, "Reading pCAL X0, X1, type, nparams, and units"); - X0 = png_get_int_32((png_bytep)buf+1); - X1 = png_get_int_32((png_bytep)buf+5); - type = buf[9]; - nparams = buf[10]; - units = buf + 11; - - png_debug(3, "Checking pCAL equation type and number of parameters"); - /* Check that we have the right number of parameters for known - equation types. */ - if ((type == PNG_EQUATION_LINEAR && nparams != 2) || - (type == PNG_EQUATION_BASE_E && nparams != 3) || - (type == PNG_EQUATION_ARBITRARY && nparams != 3) || - (type == PNG_EQUATION_HYPERBOLIC && nparams != 4)) - { - png_warning(png_ptr, "Invalid pCAL parameters for equation type"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - else if (type >= PNG_EQUATION_LAST) - { - png_warning(png_ptr, "Unrecognized equation type for pCAL chunk"); - } - - for (buf = units; *buf; buf++) - /* Empty loop to move past the units string. */ ; - - png_debug(3, "Allocating pCAL parameters array"); - params = (png_charpp)png_malloc_warn(png_ptr, - (png_uint_32)(nparams * png_sizeof(png_charp))) ; - if (params == NULL) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_warning(png_ptr, "No memory for pCAL params."); - return; - } - - /* Get pointers to the start of each parameter string. */ - for (i = 0; i < (int)nparams; i++) - { - buf++; /* Skip the null string terminator from previous parameter. */ - - png_debug1(3, "Reading pCAL parameter %d", i); - for (params[i] = buf; buf <= endptr && *buf != 0x00; buf++) - /* Empty loop to move past each parameter string */ ; - - /* Make sure we haven't run out of data yet */ - if (buf > endptr) - { - png_warning(png_ptr, "Invalid pCAL data"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_free(png_ptr, params); - return; - } - } - - png_set_pCAL(png_ptr, info_ptr, png_ptr->chunkdata, X0, X1, type, nparams, - units, params); - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_free(png_ptr, params); -} -#endif - -#ifdef PNG_READ_sCAL_SUPPORTED -/* Read the sCAL chunk */ -void /* PRIVATE */ -png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_charp ep; -#ifdef PNG_FLOATING_POINT_SUPPORTED - double width, height; - png_charp vp; -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - png_charp swidth, sheight; -#endif -#endif - png_size_t slength; - - png_debug(1, "in png_handle_sCAL"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before sCAL"); - else if (png_ptr->mode & PNG_HAVE_IDAT) - { - png_warning(png_ptr, "Invalid sCAL after IDAT"); - png_crc_finish(png_ptr, length); - return; - } - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL)) - { - png_warning(png_ptr, "Duplicate sCAL chunk"); - png_crc_finish(png_ptr, length); - return; - } - - png_debug1(2, "Allocating and reading sCAL chunk data (%lu bytes)", - length + 1); - png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1); - if (png_ptr->chunkdata == NULL) - { - png_warning(png_ptr, "Out of memory while processing sCAL chunk"); - png_crc_finish(png_ptr, length); - return; - } - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - - if (png_crc_finish(png_ptr, 0)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; /* Null terminate the last string */ - - ep = png_ptr->chunkdata + 1; /* Skip unit byte */ - -#ifdef PNG_FLOATING_POINT_SUPPORTED - width = png_strtod(png_ptr, ep, &vp); - if (*vp) - { - png_warning(png_ptr, "malformed width string in sCAL chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - swidth = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1); - if (swidth == NULL) - { - png_warning(png_ptr, "Out of memory while processing sCAL chunk width"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - png_memcpy(swidth, ep, (png_size_t)png_strlen(ep)); -#endif -#endif - - for (ep = png_ptr->chunkdata; *ep; ep++) - /* Empty loop */ ; - ep++; - - if (png_ptr->chunkdata + slength < ep) - { - png_warning(png_ptr, "Truncated sCAL chunk"); -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, swidth); -#endif - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - -#ifdef PNG_FLOATING_POINT_SUPPORTED - height = png_strtod(png_ptr, ep, &vp); - if (*vp) - { - png_warning(png_ptr, "malformed height string in sCAL chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, swidth); -#endif - return; - } -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - sheight = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1); - if (sheight == NULL) - { - png_warning(png_ptr, "Out of memory while processing sCAL chunk height"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, swidth); -#endif - return; - } - png_memcpy(sheight, ep, (png_size_t)png_strlen(ep)); -#endif -#endif - - if (png_ptr->chunkdata + slength < ep -#ifdef PNG_FLOATING_POINT_SUPPORTED - || width <= 0. || height <= 0. -#endif - ) - { - png_warning(png_ptr, "Invalid sCAL data"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, swidth); - png_free(png_ptr, sheight); -#endif - return; - } - - -#ifdef PNG_FLOATING_POINT_SUPPORTED - png_set_sCAL(png_ptr, info_ptr, png_ptr->chunkdata[0], width, height); -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - png_set_sCAL_s(png_ptr, info_ptr, png_ptr->chunkdata[0], swidth, sheight); -#endif -#endif - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; -#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED) - png_free(png_ptr, swidth); - png_free(png_ptr, sheight); -#endif -} -#endif - -#ifdef PNG_READ_tIME_SUPPORTED -void /* PRIVATE */ -png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_byte buf[7]; - png_time mod_time; - - png_debug(1, "in png_handle_tIME"); - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Out of place tIME chunk"); - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)) - { - png_warning(png_ptr, "Duplicate tIME chunk"); - png_crc_finish(png_ptr, length); - return; - } - - if (png_ptr->mode & PNG_HAVE_IDAT) - png_ptr->mode |= PNG_AFTER_IDAT; - - if (length != 7) - { - png_warning(png_ptr, "Incorrect tIME chunk length"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buf, 7); - if (png_crc_finish(png_ptr, 0)) - return; - - mod_time.second = buf[6]; - mod_time.minute = buf[5]; - mod_time.hour = buf[4]; - mod_time.day = buf[3]; - mod_time.month = buf[2]; - mod_time.year = png_get_uint_16(buf); - - png_set_tIME(png_ptr, info_ptr, &mod_time); -} -#endif - -#ifdef PNG_READ_tEXt_SUPPORTED -/* Note: this does not properly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_textp text_ptr; - png_charp key; - png_charp text; - png_uint_32 skip = 0; - png_size_t slength; - int ret; - - png_debug(1, "in png_handle_tEXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for tEXt"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before tEXt"); - - if (png_ptr->mode & PNG_HAVE_IDAT) - png_ptr->mode |= PNG_AFTER_IDAT; - -#ifdef PNG_MAX_MALLOC_64K - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "tEXt chunk too large to fit in memory"); - skip = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - - png_free(png_ptr, png_ptr->chunkdata); - - png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1); - if (png_ptr->chunkdata == NULL) - { - png_warning(png_ptr, "No memory to process text chunk."); - return; - } - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - - if (png_crc_finish(png_ptr, skip)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - key = png_ptr->chunkdata; - - key[slength] = 0x00; - - for (text = key; *text; text++) - /* Empty loop to find end of key */ ; - - if (text != key + slength) - text++; - - text_ptr = (png_textp)png_malloc_warn(png_ptr, - (png_uint_32)png_sizeof(png_text)); - if (text_ptr == NULL) - { - png_warning(png_ptr, "Not enough memory to process text chunk."); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - text_ptr->compression = PNG_TEXT_COMPRESSION_NONE; - text_ptr->key = key; -#ifdef PNG_iTXt_SUPPORTED - text_ptr->lang = NULL; - text_ptr->lang_key = NULL; - text_ptr->itxt_length = 0; -#endif - text_ptr->text = text; - text_ptr->text_length = png_strlen(text); - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - png_free(png_ptr, text_ptr); - if (ret) - png_warning(png_ptr, "Insufficient memory to process text chunk."); -} -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED -/* Note: this does not correctly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_textp text_ptr; - png_charp text; - int comp_type; - int ret; - png_size_t slength, prefix_len, data_len; - - png_debug(1, "in png_handle_zTXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for zTXt"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before zTXt"); - - if (png_ptr->mode & PNG_HAVE_IDAT) - png_ptr->mode |= PNG_AFTER_IDAT; - -#ifdef PNG_MAX_MALLOC_64K - /* We will no doubt have problems with chunks even half this size, but - there is no hard and fast rule to tell us where to stop. */ - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "zTXt chunk too large to fit in memory"); - png_crc_finish(png_ptr, length); - return; - } -#endif - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1); - if (png_ptr->chunkdata == NULL) - { - png_warning(png_ptr, "Out of memory processing zTXt chunk."); - return; - } - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - if (png_crc_finish(png_ptr, 0)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; - - for (text = png_ptr->chunkdata; *text; text++) - /* Empty loop */ ; - - /* zTXt must have some text after the chunkdataword */ - if (text >= png_ptr->chunkdata + slength - 2) - { - png_warning(png_ptr, "Truncated zTXt chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - else - { - comp_type = *(++text); - if (comp_type != PNG_TEXT_COMPRESSION_zTXt) - { - png_warning(png_ptr, "Unknown compression type in zTXt chunk"); - comp_type = PNG_TEXT_COMPRESSION_zTXt; - } - text++; /* Skip the compression_method byte */ - } - prefix_len = text - png_ptr->chunkdata; - - png_decompress_chunk(png_ptr, comp_type, - (png_size_t)length, prefix_len, &data_len); - - text_ptr = (png_textp)png_malloc_warn(png_ptr, - (png_uint_32)png_sizeof(png_text)); - if (text_ptr == NULL) - { - png_warning(png_ptr, "Not enough memory to process zTXt chunk."); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - text_ptr->compression = comp_type; - text_ptr->key = png_ptr->chunkdata; -#ifdef PNG_iTXt_SUPPORTED - text_ptr->lang = NULL; - text_ptr->lang_key = NULL; - text_ptr->itxt_length = 0; -#endif - text_ptr->text = png_ptr->chunkdata + prefix_len; - text_ptr->text_length = data_len; - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_free(png_ptr, text_ptr); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - if (ret) - png_error(png_ptr, "Insufficient memory to store zTXt chunk."); -} -#endif - -#ifdef PNG_READ_iTXt_SUPPORTED -/* Note: this does not correctly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_textp text_ptr; - png_charp key, lang, text, lang_key; - int comp_flag; - int comp_type = 0; - int ret; - png_size_t slength, prefix_len, data_len; - - png_debug(1, "in png_handle_iTXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for iTXt"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if (!(png_ptr->mode & PNG_HAVE_IHDR)) - png_error(png_ptr, "Missing IHDR before iTXt"); - - if (png_ptr->mode & PNG_HAVE_IDAT) - png_ptr->mode |= PNG_AFTER_IDAT; - -#ifdef PNG_MAX_MALLOC_64K - /* We will no doubt have problems with chunks even half this size, but - there is no hard and fast rule to tell us where to stop. */ - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "iTXt chunk too large to fit in memory"); - png_crc_finish(png_ptr, length); - return; - } -#endif - - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1); - if (png_ptr->chunkdata == NULL) - { - png_warning(png_ptr, "No memory to process iTXt chunk."); - return; - } - slength = (png_size_t)length; - png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength); - if (png_crc_finish(png_ptr, 0)) - { - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - png_ptr->chunkdata[slength] = 0x00; - - for (lang = png_ptr->chunkdata; *lang; lang++) - /* Empty loop */ ; - lang++; /* Skip NUL separator */ - - /* iTXt must have a language tag (possibly empty), two compression bytes, - * translated keyword (possibly empty), and possibly some text after the - * keyword - */ - - if (lang >= png_ptr->chunkdata + slength - 3) - { - png_warning(png_ptr, "Truncated iTXt chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - else - { - comp_flag = *lang++; - comp_type = *lang++; - } - - for (lang_key = lang; *lang_key; lang_key++) - /* Empty loop */ ; - lang_key++; /* Skip NUL separator */ - - if (lang_key >= png_ptr->chunkdata + slength) - { - png_warning(png_ptr, "Truncated iTXt chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - for (text = lang_key; *text; text++) - /* Empty loop */ ; - text++; /* Skip NUL separator */ - if (text >= png_ptr->chunkdata + slength) - { - png_warning(png_ptr, "Malformed iTXt chunk"); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - - prefix_len = text - png_ptr->chunkdata; - - key=png_ptr->chunkdata; - if (comp_flag) - png_decompress_chunk(png_ptr, comp_type, - (size_t)length, prefix_len, &data_len); - else - data_len = png_strlen(png_ptr->chunkdata + prefix_len); - text_ptr = (png_textp)png_malloc_warn(png_ptr, - (png_uint_32)png_sizeof(png_text)); - if (text_ptr == NULL) - { - png_warning(png_ptr, "Not enough memory to process iTXt chunk."); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - return; - } - text_ptr->compression = (int)comp_flag + 1; - text_ptr->lang_key = png_ptr->chunkdata + (lang_key - key); - text_ptr->lang = png_ptr->chunkdata + (lang - key); - text_ptr->itxt_length = data_len; - text_ptr->text_length = 0; - text_ptr->key = png_ptr->chunkdata; - text_ptr->text = png_ptr->chunkdata + prefix_len; - - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1); - - png_free(png_ptr, text_ptr); - png_free(png_ptr, png_ptr->chunkdata); - png_ptr->chunkdata = NULL; - if (ret) - png_error(png_ptr, "Insufficient memory to store iTXt chunk."); -} -#endif - -/* This function is called when we haven't found a handler for a - chunk. If there isn't a problem with the chunk itself (ie bad - chunk name, CRC, or a critical chunk), the chunk is silently ignored - -- unless the PNG_FLAG_UNKNOWN_CHUNKS_SUPPORTED flag is on in which - case it will be saved away to be written out later. */ -void /* PRIVATE */ -png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) -{ - png_uint_32 skip = 0; - - png_debug(1, "in png_handle_unknown"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for unknown chunk"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if (png_ptr->mode & PNG_HAVE_IDAT) - { -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IDAT; -#endif - if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) /* Not an IDAT */ - png_ptr->mode |= PNG_AFTER_IDAT; - } - - if (!(png_ptr->chunk_name[0] & 0x20)) - { -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != - PNG_HANDLE_CHUNK_ALWAYS -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - && png_ptr->read_user_chunk_fn == NULL -#endif - ) -#endif - png_chunk_error(png_ptr, "unknown critical chunk"); - } - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS) -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - || (png_ptr->read_user_chunk_fn != NULL) -#endif - ) - { -#ifdef PNG_MAX_MALLOC_64K - if (length > (png_uint_32)65535L) - { - png_warning(png_ptr, "unknown chunk too large to fit in memory"); - skip = length - (png_uint_32)65535L; - length = (png_uint_32)65535L; - } -#endif - png_memcpy((png_charp)png_ptr->unknown_chunk.name, - (png_charp)png_ptr->chunk_name, - png_sizeof(png_ptr->unknown_chunk.name)); - png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] - = '\0'; - png_ptr->unknown_chunk.size = (png_size_t)length; - if (length == 0) - png_ptr->unknown_chunk.data = NULL; - else - { - png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length); - png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); - } -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - if (png_ptr->read_user_chunk_fn != NULL) - { - /* Callback to user unknown chunk handler */ - int ret; - ret = (*(png_ptr->read_user_chunk_fn)) - (png_ptr, &png_ptr->unknown_chunk); - if (ret < 0) - png_chunk_error(png_ptr, "error in user chunk"); - if (ret == 0) - { - if (!(png_ptr->chunk_name[0] & 0x20)) -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) != - PNG_HANDLE_CHUNK_ALWAYS) -#endif - png_chunk_error(png_ptr, "unknown critical chunk"); - png_set_unknown_chunks(png_ptr, info_ptr, - &png_ptr->unknown_chunk, 1); - } - } - else -#endif - png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - } - else -#endif - skip = length; - - png_crc_finish(png_ptr, skip); - -#ifndef PNG_READ_USER_CHUNKS_SUPPORTED - info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */ -#endif -} - -/* This function is called to verify that a chunk name is valid. - This function can't have the "critical chunk check" incorporated - into it, since in the future we will need to be able to call user - functions to handle unknown critical chunks after we check that - the chunk name itself is valid. */ - -#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) - -void /* PRIVATE */ -png_check_chunk_name(png_structp png_ptr, png_bytep chunk_name) -{ - png_debug(1, "in png_check_chunk_name"); - if (isnonalpha(chunk_name[0]) || isnonalpha(chunk_name[1]) || - isnonalpha(chunk_name[2]) || isnonalpha(chunk_name[3])) - { - png_chunk_error(png_ptr, "invalid chunk type"); - } -} - -/* Combines the row recently read in with the existing pixels in the - row. This routine takes care of alpha and transparency if requested. - This routine also handles the two methods of progressive display - of interlaced images, depending on the mask value. - The mask value describes which pixels are to be combined with - the row. The pattern always repeats every 8 pixels, so just 8 - bits are needed. A one indicates the pixel is to be combined, - a zero indicates the pixel is to be skipped. This is in addition - to any alpha or transparency value associated with the pixel. If - you want all pixels to be combined, pass 0xff (255) in mask. */ - -void /* PRIVATE */ -png_combine_row(png_structp png_ptr, png_bytep row, int mask) -{ - png_debug(1, "in png_combine_row"); - if (mask == 0xff) - { - png_memcpy(row, png_ptr->row_buf + 1, - PNG_ROWBYTES(png_ptr->row_info.pixel_depth, png_ptr->width)); - } - else - { - switch (png_ptr->row_info.pixel_depth) - { - case 1: - { - png_bytep sp = png_ptr->row_buf + 1; - png_bytep dp = row; - int s_inc, s_start, s_end; - int m = 0x80; - int shift; - png_uint_32 i; - png_uint_32 row_width = png_ptr->width; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (png_ptr->transformations & PNG_PACKSWAP) - { - s_start = 0; - s_end = 7; - s_inc = 1; - } - else -#endif - { - s_start = 7; - s_end = 0; - s_inc = -1; - } - - shift = s_start; - - for (i = 0; i < row_width; i++) - { - if (m & mask) - { - int value; - - value = (*sp >> shift) & 0x01; - *dp &= (png_byte)((0x7f7f >> (7 - shift)) & 0xff); - *dp |= (png_byte)(value << shift); - } - - if (shift == s_end) - { - shift = s_start; - sp++; - dp++; - } - else - shift += s_inc; - - if (m == 1) - m = 0x80; - else - m >>= 1; - } - break; - } - case 2: - { - png_bytep sp = png_ptr->row_buf + 1; - png_bytep dp = row; - int s_start, s_end, s_inc; - int m = 0x80; - int shift; - png_uint_32 i; - png_uint_32 row_width = png_ptr->width; - int value; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (png_ptr->transformations & PNG_PACKSWAP) - { - s_start = 0; - s_end = 6; - s_inc = 2; - } - else -#endif - { - s_start = 6; - s_end = 0; - s_inc = -2; - } - - shift = s_start; - - for (i = 0; i < row_width; i++) - { - if (m & mask) - { - value = (*sp >> shift) & 0x03; - *dp &= (png_byte)((0x3f3f >> (6 - shift)) & 0xff); - *dp |= (png_byte)(value << shift); - } - - if (shift == s_end) - { - shift = s_start; - sp++; - dp++; - } - else - shift += s_inc; - if (m == 1) - m = 0x80; - else - m >>= 1; - } - break; - } - case 4: - { - png_bytep sp = png_ptr->row_buf + 1; - png_bytep dp = row; - int s_start, s_end, s_inc; - int m = 0x80; - int shift; - png_uint_32 i; - png_uint_32 row_width = png_ptr->width; - int value; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (png_ptr->transformations & PNG_PACKSWAP) - { - s_start = 0; - s_end = 4; - s_inc = 4; - } - else -#endif - { - s_start = 4; - s_end = 0; - s_inc = -4; - } - shift = s_start; - - for (i = 0; i < row_width; i++) - { - if (m & mask) - { - value = (*sp >> shift) & 0xf; - *dp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff); - *dp |= (png_byte)(value << shift); - } - - if (shift == s_end) - { - shift = s_start; - sp++; - dp++; - } - else - shift += s_inc; - if (m == 1) - m = 0x80; - else - m >>= 1; - } - break; - } - default: - { - png_bytep sp = png_ptr->row_buf + 1; - png_bytep dp = row; - png_size_t pixel_bytes = (png_ptr->row_info.pixel_depth >> 3); - png_uint_32 i; - png_uint_32 row_width = png_ptr->width; - png_byte m = 0x80; - - - for (i = 0; i < row_width; i++) - { - if (m & mask) - { - png_memcpy(dp, sp, pixel_bytes); - } - - sp += pixel_bytes; - dp += pixel_bytes; - - if (m == 1) - m = 0x80; - else - m >>= 1; - } - break; - } - } - } -} - -#ifdef PNG_READ_INTERLACING_SUPPORTED -/* OLD pre-1.0.9 interface: -void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass, - png_uint_32 transformations) - */ -void /* PRIVATE */ -png_do_read_interlace(png_structp png_ptr) -{ - png_row_infop row_info = &(png_ptr->row_info); - png_bytep row = png_ptr->row_buf + 1; - int pass = png_ptr->pass; - png_uint_32 transformations = png_ptr->transformations; - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* Offset to next interlace block */ - PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - png_debug(1, "in png_do_read_interlace"); - if (row != NULL && row_info != NULL) - { - png_uint_32 final_width; - - final_width = row_info->width * png_pass_inc[pass]; - - switch (row_info->pixel_depth) - { - case 1: - { - png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3); - png_bytep dp = row + (png_size_t)((final_width - 1) >> 3); - int sshift, dshift; - int s_start, s_end, s_inc; - int jstop = png_pass_inc[pass]; - png_byte v; - png_uint_32 i; - int j; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (transformations & PNG_PACKSWAP) - { - sshift = (int)((row_info->width + 7) & 0x07); - dshift = (int)((final_width + 7) & 0x07); - s_start = 7; - s_end = 0; - s_inc = -1; - } - else -#endif - { - sshift = 7 - (int)((row_info->width + 7) & 0x07); - dshift = 7 - (int)((final_width + 7) & 0x07); - s_start = 0; - s_end = 7; - s_inc = 1; - } - - for (i = 0; i < row_info->width; i++) - { - v = (png_byte)((*sp >> sshift) & 0x01); - for (j = 0; j < jstop; j++) - { - *dp &= (png_byte)((0x7f7f >> (7 - dshift)) & 0xff); - *dp |= (png_byte)(v << dshift); - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - else - dshift += s_inc; - } - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - else - sshift += s_inc; - } - break; - } - case 2: - { - png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2); - png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2); - int sshift, dshift; - int s_start, s_end, s_inc; - int jstop = png_pass_inc[pass]; - png_uint_32 i; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (transformations & PNG_PACKSWAP) - { - sshift = (int)(((row_info->width + 3) & 0x03) << 1); - dshift = (int)(((final_width + 3) & 0x03) << 1); - s_start = 6; - s_end = 0; - s_inc = -2; - } - else -#endif - { - sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1); - dshift = (int)((3 - ((final_width + 3) & 0x03)) << 1); - s_start = 0; - s_end = 6; - s_inc = 2; - } - - for (i = 0; i < row_info->width; i++) - { - png_byte v; - int j; - - v = (png_byte)((*sp >> sshift) & 0x03); - for (j = 0; j < jstop; j++) - { - *dp &= (png_byte)((0x3f3f >> (6 - dshift)) & 0xff); - *dp |= (png_byte)(v << dshift); - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - else - dshift += s_inc; - } - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - else - sshift += s_inc; - } - break; - } - case 4: - { - png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1); - png_bytep dp = row + (png_size_t)((final_width - 1) >> 1); - int sshift, dshift; - int s_start, s_end, s_inc; - png_uint_32 i; - int jstop = png_pass_inc[pass]; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if (transformations & PNG_PACKSWAP) - { - sshift = (int)(((row_info->width + 1) & 0x01) << 2); - dshift = (int)(((final_width + 1) & 0x01) << 2); - s_start = 4; - s_end = 0; - s_inc = -4; - } - else -#endif - { - sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2); - dshift = (int)((1 - ((final_width + 1) & 0x01)) << 2); - s_start = 0; - s_end = 4; - s_inc = 4; - } - - for (i = 0; i < row_info->width; i++) - { - png_byte v = (png_byte)((*sp >> sshift) & 0xf); - int j; - - for (j = 0; j < jstop; j++) - { - *dp &= (png_byte)((0xf0f >> (4 - dshift)) & 0xff); - *dp |= (png_byte)(v << dshift); - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - else - dshift += s_inc; - } - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - else - sshift += s_inc; - } - break; - } - default: - { - png_size_t pixel_bytes = (row_info->pixel_depth >> 3); - png_bytep sp = row + (png_size_t)(row_info->width - 1) - * pixel_bytes; - png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes; - - int jstop = png_pass_inc[pass]; - png_uint_32 i; - - for (i = 0; i < row_info->width; i++) - { - png_byte v[8]; - int j; - - png_memcpy(v, sp, pixel_bytes); - for (j = 0; j < jstop; j++) - { - png_memcpy(dp, v, pixel_bytes); - dp -= pixel_bytes; - } - sp -= pixel_bytes; - } - break; - } - } - row_info->width = final_width; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width); - } -#ifndef PNG_READ_PACKSWAP_SUPPORTED - transformations = transformations; /* Silence compiler warning */ -#endif -} -#endif /* PNG_READ_INTERLACING_SUPPORTED */ - -void /* PRIVATE */ -png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row, - png_bytep prev_row, int filter) -{ - png_debug(1, "in png_read_filter_row"); - png_debug2(2, "row = %lu, filter = %d", png_ptr->row_number, filter); - switch (filter) - { - case PNG_FILTER_VALUE_NONE: - break; - case PNG_FILTER_VALUE_SUB: - { - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3; - png_bytep rp = row + bpp; - png_bytep lp = row; - - for (i = bpp; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff); - rp++; - } - break; - } - case PNG_FILTER_VALUE_UP: - { - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - png_bytep rp = row; - png_bytep pp = prev_row; - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff); - rp++; - } - break; - } - case PNG_FILTER_VALUE_AVG: - { - png_uint_32 i; - png_bytep rp = row; - png_bytep pp = prev_row; - png_bytep lp = row; - png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3; - png_uint_32 istop = row_info->rowbytes - bpp; - - for (i = 0; i < bpp; i++) - { - *rp = (png_byte)(((int)(*rp) + - ((int)(*pp++) / 2 )) & 0xff); - rp++; - } - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + - (int)(*pp++ + *lp++) / 2 ) & 0xff); - rp++; - } - break; - } - case PNG_FILTER_VALUE_PAETH: - { - png_uint_32 i; - png_bytep rp = row; - png_bytep pp = prev_row; - png_bytep lp = row; - png_bytep cp = prev_row; - png_uint_32 bpp = (row_info->pixel_depth + 7) >> 3; - png_uint_32 istop=row_info->rowbytes - bpp; - - for (i = 0; i < bpp; i++) - { - *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff); - rp++; - } - - for (i = 0; i < istop; i++) /* Use leftover rp,pp */ - { - int a, b, c, pa, pb, pc, p; - - a = *lp++; - b = *pp++; - c = *cp++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - /* - if (pa <= pb && pa <= pc) - p = a; - else if (pb <= pc) - p = b; - else - p = c; - */ - - p = (pa <= pb && pa <= pc) ? a : (pb <= pc) ? b : c; - - *rp = (png_byte)(((int)(*rp) + p) & 0xff); - rp++; - } - break; - } - default: - png_warning(png_ptr, "Ignoring bad adaptive filter type"); - *row = 0; - break; - } -} - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -void /* PRIVATE */ -png_read_finish_row(png_structp png_ptr) -{ -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif /* PNG_READ_INTERLACING_SUPPORTED */ - - png_debug(1, "in png_read_finish_row"); - png_ptr->row_number++; - if (png_ptr->row_number < png_ptr->num_rows) - return; - -#ifdef PNG_READ_INTERLACING_SUPPORTED - if (png_ptr->interlaced) - { - png_ptr->row_number = 0; - png_memset_check(png_ptr, png_ptr->prev_row, 0, - png_ptr->rowbytes + 1); - do - { - png_ptr->pass++; - if (png_ptr->pass >= 7) - break; - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - - if (!(png_ptr->transformations & PNG_INTERLACE)) - { - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - if (!(png_ptr->num_rows)) - continue; - } - else /* if (png_ptr->transformations & PNG_INTERLACE) */ - break; - } while (png_ptr->iwidth == 0); - - if (png_ptr->pass < 7) - return; - } -#endif /* PNG_READ_INTERLACING_SUPPORTED */ - - if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED)) - { -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_CONST PNG_IDAT; -#endif - char extra; - int ret; - - png_ptr->zstream.next_out = (Byte *)&extra; - png_ptr->zstream.avail_out = (uInt)1; - for (;;) - { - if (!(png_ptr->zstream.avail_in)) - { - while (!png_ptr->idat_size) - { - png_byte chunk_length[4]; - - png_crc_finish(png_ptr, 0); - - png_read_data(png_ptr, chunk_length, 4); - png_ptr->idat_size = png_get_uint_31(png_ptr, chunk_length); - png_reset_crc(png_ptr); - png_crc_read(png_ptr, png_ptr->chunk_name, 4); - if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4)) - png_error(png_ptr, "Not enough image data"); - - } - png_ptr->zstream.avail_in = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_in = png_ptr->zbuf; - if (png_ptr->zbuf_size > png_ptr->idat_size) - png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size; - png_crc_read(png_ptr, png_ptr->zbuf, png_ptr->zstream.avail_in); - png_ptr->idat_size -= png_ptr->zstream.avail_in; - } - ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH); - if (ret == Z_STREAM_END) - { - if (!(png_ptr->zstream.avail_out) || png_ptr->zstream.avail_in || - png_ptr->idat_size) - png_warning(png_ptr, "Extra compressed data."); - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - break; - } - if (ret != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg : - "Decompression Error"); - - if (!(png_ptr->zstream.avail_out)) - { - png_warning(png_ptr, "Extra compressed data."); - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED; - break; - } - - } - png_ptr->zstream.avail_out = 0; - } - - if (png_ptr->idat_size || png_ptr->zstream.avail_in) - png_warning(png_ptr, "Extra compression data."); - - inflateReset(&png_ptr->zstream); - - png_ptr->mode |= PNG_AFTER_IDAT; -} -#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */ - -void /* PRIVATE */ -png_read_start_row(png_structp png_ptr) -{ -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - PNG_CONST int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - PNG_CONST int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif - - int max_pixel_depth; - png_size_t row_bytes; - - png_debug(1, "in png_read_start_row"); - png_ptr->zstream.avail_in = 0; - png_init_read_transformations(png_ptr); -#ifdef PNG_READ_INTERLACING_SUPPORTED - if (png_ptr->interlaced) - { - if (!(png_ptr->transformations & PNG_INTERLACE)) - png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - - png_pass_ystart[0]) / png_pass_yinc[0]; - else - png_ptr->num_rows = png_ptr->height; - - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - } - else -#endif /* PNG_READ_INTERLACING_SUPPORTED */ - { - png_ptr->num_rows = png_ptr->height; - png_ptr->iwidth = png_ptr->width; - } - max_pixel_depth = png_ptr->pixel_depth; - -#ifdef PNG_READ_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8) - max_pixel_depth = 8; -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED - if (png_ptr->transformations & PNG_EXPAND) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (png_ptr->num_trans) - max_pixel_depth = 32; - else - max_pixel_depth = 24; - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - if (max_pixel_depth < 8) - max_pixel_depth = 8; - if (png_ptr->num_trans) - max_pixel_depth *= 2; - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - if (png_ptr->num_trans) - { - max_pixel_depth *= 4; - max_pixel_depth /= 3; - } - } - } -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED - if (png_ptr->transformations & (PNG_FILLER)) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - max_pixel_depth = 32; - else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - if (max_pixel_depth <= 8) - max_pixel_depth = 16; - else - max_pixel_depth = 32; - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - if (max_pixel_depth <= 32) - max_pixel_depth = 32; - else - max_pixel_depth = 64; - } - } -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - if (png_ptr->transformations & PNG_GRAY_TO_RGB) - { - if ( -#ifdef PNG_READ_EXPAND_SUPPORTED - (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) || -#endif -#ifdef PNG_READ_FILLER_SUPPORTED - (png_ptr->transformations & (PNG_FILLER)) || -#endif - png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (max_pixel_depth <= 16) - max_pixel_depth = 32; - else - max_pixel_depth = 64; - } - else - { - if (max_pixel_depth <= 8) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - max_pixel_depth = 32; - else - max_pixel_depth = 24; - } - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - max_pixel_depth = 64; - else - max_pixel_depth = 48; - } - } -#endif - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \ -defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) - if (png_ptr->transformations & PNG_USER_TRANSFORM) - { - int user_pixel_depth = png_ptr->user_transform_depth* - png_ptr->user_transform_channels; - if (user_pixel_depth > max_pixel_depth) - max_pixel_depth=user_pixel_depth; - } -#endif - - /* Align the width on the next larger 8 pixels. Mainly used - * for interlacing - */ - row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); - /* Calculate the maximum bytes needed, adding a byte and a pixel - * for safety's sake - */ - row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) + - 1 + ((max_pixel_depth + 7) >> 3); -#ifdef PNG_MAX_MALLOC_64K - if (row_bytes > (png_uint_32)65536L) - png_error(png_ptr, "This image requires a row greater than 64KB"); -#endif - - if (row_bytes + 64 > png_ptr->old_big_row_buf_size) - { - png_free(png_ptr, png_ptr->big_row_buf); - if (png_ptr->interlaced) - png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, - row_bytes + 64); - else - png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, - row_bytes + 64); - png_ptr->old_big_row_buf_size = row_bytes + 64; - - /* Use 32 bytes of padding before and after row_buf. */ - png_ptr->row_buf = png_ptr->big_row_buf + 32; - png_ptr->old_big_row_buf_size = row_bytes + 64; - } - -#ifdef PNG_MAX_MALLOC_64K - if ((png_uint_32)row_bytes + 1 > (png_uint_32)65536L) - png_error(png_ptr, "This image requires a row greater than 64KB"); -#endif - if ((png_uint_32)row_bytes > (png_uint_32)(PNG_SIZE_MAX - 1)) - png_error(png_ptr, "Row has too many bytes to allocate in memory."); - - if (row_bytes + 1 > png_ptr->old_prev_row_size) - { - png_free(png_ptr, png_ptr->prev_row); - png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)( - row_bytes + 1)); - png_memset_check(png_ptr, png_ptr->prev_row, 0, row_bytes + 1); - png_ptr->old_prev_row_size = row_bytes + 1; - } - - png_ptr->rowbytes = row_bytes; - - png_debug1(3, "width = %lu,", png_ptr->width); - png_debug1(3, "height = %lu,", png_ptr->height); - png_debug1(3, "iwidth = %lu,", png_ptr->iwidth); - png_debug1(3, "num_rows = %lu,", png_ptr->num_rows); - png_debug1(3, "rowbytes = %lu,", png_ptr->rowbytes); - png_debug1(3, "irowbytes = %lu", - PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1); - - png_ptr->flags |= PNG_FLAG_ROW_INIT; -} -#endif /* PNG_READ_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngset.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngset.c deleted file mode 100644 index 717757f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngset.c +++ /dev/null @@ -1,1226 +0,0 @@ - -/* pngset.c - storage of image information into info struct - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * The functions here are used during reads to store data from the file - * into the info struct, and during writes to store application data - * into the info struct for writing into the file. This abstracts the - * info struct and allows us to change the structure in the future. - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -#ifdef PNG_bKGD_SUPPORTED -void PNGAPI -png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background) -{ - png_debug1(1, "in %s storage function", "bKGD"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); - info_ptr->valid |= PNG_INFO_bKGD; -} -#endif - -#ifdef PNG_cHRM_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_cHRM(png_structp png_ptr, png_infop info_ptr, - double white_x, double white_y, double red_x, double red_y, - double green_x, double green_y, double blue_x, double blue_y) -{ - png_debug1(1, "in %s storage function", "cHRM"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->x_white = (float)white_x; - info_ptr->y_white = (float)white_y; - info_ptr->x_red = (float)red_x; - info_ptr->y_red = (float)red_y; - info_ptr->x_green = (float)green_x; - info_ptr->y_green = (float)green_y; - info_ptr->x_blue = (float)blue_x; - info_ptr->y_blue = (float)blue_y; -#ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5); - info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5); - info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5); - info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5); - info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5); - info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5); - info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5); - info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5); -#endif - info_ptr->valid |= PNG_INFO_cHRM; -} -#endif /* PNG_FLOATING_POINT_SUPPORTED */ - -#ifdef PNG_FIXED_POINT_SUPPORTED -void PNGAPI -png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, - png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, - png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, - png_fixed_point blue_x, png_fixed_point blue_y) -{ - png_debug1(1, "in %s storage function", "cHRM fixed"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - -#ifdef PNG_CHECK_cHRM_SUPPORTED - if (png_check_cHRM_fixed(png_ptr, - white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) -#endif - { - info_ptr->int_x_white = white_x; - info_ptr->int_y_white = white_y; - info_ptr->int_x_red = red_x; - info_ptr->int_y_red = red_y; - info_ptr->int_x_green = green_x; - info_ptr->int_y_green = green_y; - info_ptr->int_x_blue = blue_x; - info_ptr->int_y_blue = blue_y; -#ifdef PNG_FLOATING_POINT_SUPPORTED - info_ptr->x_white = (float)(white_x/100000.); - info_ptr->y_white = (float)(white_y/100000.); - info_ptr->x_red = (float)( red_x/100000.); - info_ptr->y_red = (float)( red_y/100000.); - info_ptr->x_green = (float)(green_x/100000.); - info_ptr->y_green = (float)(green_y/100000.); - info_ptr->x_blue = (float)( blue_x/100000.); - info_ptr->y_blue = (float)( blue_y/100000.); -#endif - info_ptr->valid |= PNG_INFO_cHRM; - } -} -#endif /* PNG_FIXED_POINT_SUPPORTED */ -#endif /* PNG_cHRM_SUPPORTED */ - -#ifdef PNG_gAMA_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) -{ - double png_gamma; - - png_debug1(1, "in %s storage function", "gAMA"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* Check for overflow */ - if (file_gamma > 21474.83) - { - png_warning(png_ptr, "Limiting gamma to 21474.83"); - png_gamma=21474.83; - } - else - png_gamma = file_gamma; - info_ptr->gamma = (float)png_gamma; -#ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_gamma = (int)(png_gamma*100000.+.5); -#endif - info_ptr->valid |= PNG_INFO_gAMA; - if (png_gamma == 0.0) - png_warning(png_ptr, "Setting gamma=0"); -} -#endif -void PNGAPI -png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point - int_gamma) -{ - png_fixed_point png_gamma; - - png_debug1(1, "in %s storage function", "gAMA"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (int_gamma > (png_fixed_point)PNG_UINT_31_MAX) - { - png_warning(png_ptr, "Limiting gamma to 21474.83"); - png_gamma=PNG_UINT_31_MAX; - } - else - { - if (int_gamma < 0) - { - png_warning(png_ptr, "Setting negative gamma to zero"); - png_gamma = 0; - } - else - png_gamma = int_gamma; - } -#ifdef PNG_FLOATING_POINT_SUPPORTED - info_ptr->gamma = (float)(png_gamma/100000.); -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - info_ptr->int_gamma = png_gamma; -#endif - info_ptr->valid |= PNG_INFO_gAMA; - if (png_gamma == 0) - png_warning(png_ptr, "Setting gamma=0"); -} -#endif - -#ifdef PNG_hIST_SUPPORTED -void PNGAPI -png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist) -{ - int i; - - png_debug1(1, "in %s storage function", "hIST"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (info_ptr->num_palette == 0 || info_ptr->num_palette - > PNG_MAX_PALETTE_LENGTH) - { - png_warning(png_ptr, - "Invalid palette size, hIST allocation skipped."); - return; - } - -#ifdef PNG_FREE_ME_SUPPORTED - png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); -#endif - /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in - * version 1.2.1 - */ - png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, - (png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16))); - if (png_ptr->hist == NULL) - { - png_warning(png_ptr, "Insufficient memory for hIST chunk data."); - return; - } - - for (i = 0; i < info_ptr->num_palette; i++) - png_ptr->hist[i] = hist[i]; - info_ptr->hist = png_ptr->hist; - info_ptr->valid |= PNG_INFO_hIST; - -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_HIST; -#else - png_ptr->flags |= PNG_FLAG_FREE_HIST; -#endif -} -#endif - -void PNGAPI -png_set_IHDR(png_structp png_ptr, png_infop info_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type) -{ - png_debug1(1, "in %s storage function", "IHDR"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->width = width; - info_ptr->height = height; - info_ptr->bit_depth = (png_byte)bit_depth; - info_ptr->color_type = (png_byte)color_type; - info_ptr->compression_type = (png_byte)compression_type; - info_ptr->filter_type = (png_byte)filter_type; - info_ptr->interlace_type = (png_byte)interlace_type; - - png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, - info_ptr->compression_type, info_ptr->filter_type); - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - info_ptr->channels = 1; - else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) - info_ptr->channels = 3; - else - info_ptr->channels = 1; - if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) - info_ptr->channels++; - info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); - - /* Check for potential overflow */ - if (width > (PNG_UINT_32_MAX - >> 3) /* 8-byte RGBA pixels */ - - 64 /* bigrowbuf hack */ - - 1 /* filter byte */ - - 7*8 /* rounding of width to multiple of 8 pixels */ - - 8) /* extra max_pixel_depth pad */ - info_ptr->rowbytes = (png_size_t)0; - else - info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); -} - -#ifdef PNG_oFFs_SUPPORTED -void PNGAPI -png_set_oFFs(png_structp png_ptr, png_infop info_ptr, - png_int_32 offset_x, png_int_32 offset_y, int unit_type) -{ - png_debug1(1, "in %s storage function", "oFFs"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->x_offset = offset_x; - info_ptr->y_offset = offset_y; - info_ptr->offset_unit_type = (png_byte)unit_type; - info_ptr->valid |= PNG_INFO_oFFs; -} -#endif - -#ifdef PNG_pCAL_SUPPORTED -void PNGAPI -png_set_pCAL(png_structp png_ptr, png_infop info_ptr, - png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, - png_charp units, png_charpp params) -{ - png_uint_32 length; - int i; - - png_debug1(1, "in %s storage function", "pCAL"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - length = png_strlen(purpose) + 1; - png_debug1(3, "allocating purpose for info (%lu bytes)", - (unsigned long)length); - info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); - if (info_ptr->pcal_purpose == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL purpose."); - return; - } - png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length); - - png_debug(3, "storing X0, X1, type, and nparams in info"); - info_ptr->pcal_X0 = X0; - info_ptr->pcal_X1 = X1; - info_ptr->pcal_type = (png_byte)type; - info_ptr->pcal_nparams = (png_byte)nparams; - - length = png_strlen(units) + 1; - png_debug1(3, "allocating units for info (%lu bytes)", - (unsigned long)length); - info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); - if (info_ptr->pcal_units == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL units."); - return; - } - png_memcpy(info_ptr->pcal_units, units, (png_size_t)length); - - info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, - (png_uint_32)((nparams + 1) * png_sizeof(png_charp))); - if (info_ptr->pcal_params == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL params."); - return; - } - - png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp)); - - for (i = 0; i < nparams; i++) - { - length = png_strlen(params[i]) + 1; - png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, - (unsigned long)length); - info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); - if (info_ptr->pcal_params[i] == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL parameter."); - return; - } - png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length); - } - - info_ptr->valid |= PNG_INFO_pCAL; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_PCAL; -#endif -} -#endif - -#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED) -#ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_sCAL(png_structp png_ptr, png_infop info_ptr, - int unit, double width, double height) -{ - png_debug1(1, "in %s storage function", "sCAL"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->scal_unit = (png_byte)unit; - info_ptr->scal_pixel_width = width; - info_ptr->scal_pixel_height = height; - - info_ptr->valid |= PNG_INFO_sCAL; -} -#else -#ifdef PNG_FIXED_POINT_SUPPORTED -void PNGAPI -png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr, - int unit, png_charp swidth, png_charp sheight) -{ - png_uint_32 length; - - png_debug1(1, "in %s storage function", "sCAL"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->scal_unit = (png_byte)unit; - - length = png_strlen(swidth) + 1; - png_debug1(3, "allocating unit for info (%u bytes)", - (unsigned int)length); - info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length); - if (info_ptr->scal_s_width == NULL) - { - png_warning(png_ptr, - "Memory allocation failed while processing sCAL."); - return; - } - png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length); - - length = png_strlen(sheight) + 1; - png_debug1(3, "allocating unit for info (%u bytes)", - (unsigned int)length); - info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length); - if (info_ptr->scal_s_height == NULL) - { - png_free (png_ptr, info_ptr->scal_s_width); - info_ptr->scal_s_width = NULL; - png_warning(png_ptr, - "Memory allocation failed while processing sCAL."); - return; - } - png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length); - info_ptr->valid |= PNG_INFO_sCAL; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_SCAL; -#endif -} -#endif -#endif -#endif - -#ifdef PNG_pHYs_SUPPORTED -void PNGAPI -png_set_pHYs(png_structp png_ptr, png_infop info_ptr, - png_uint_32 res_x, png_uint_32 res_y, int unit_type) -{ - png_debug1(1, "in %s storage function", "pHYs"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->x_pixels_per_unit = res_x; - info_ptr->y_pixels_per_unit = res_y; - info_ptr->phys_unit_type = (png_byte)unit_type; - info_ptr->valid |= PNG_INFO_pHYs; -} -#endif - -void PNGAPI -png_set_PLTE(png_structp png_ptr, png_infop info_ptr, - png_colorp palette, int num_palette) -{ - - png_debug1(1, "in %s storage function", "PLTE"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_error(png_ptr, "Invalid palette length"); - else - { - png_warning(png_ptr, "Invalid palette length"); - return; - } - } - - /* It may not actually be necessary to set png_ptr->palette here; - * we do it for backward compatibility with the way the png_handle_tRNS - * function used to do the allocation. - */ -#ifdef PNG_FREE_ME_SUPPORTED - png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); -#endif - - /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead - * of num_palette entries, in case of an invalid PNG file that has - * too-large sample values. - */ - png_ptr->palette = (png_colorp)png_calloc(png_ptr, - PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); - png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color)); - info_ptr->palette = png_ptr->palette; - info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette; - -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_PLTE; -#else - png_ptr->flags |= PNG_FLAG_FREE_PLTE; -#endif - - info_ptr->valid |= PNG_INFO_PLTE; -} - -#ifdef PNG_sBIT_SUPPORTED -void PNGAPI -png_set_sBIT(png_structp png_ptr, png_infop info_ptr, - png_color_8p sig_bit) -{ - png_debug1(1, "in %s storage function", "sBIT"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8)); - info_ptr->valid |= PNG_INFO_sBIT; -} -#endif - -#ifdef PNG_sRGB_SUPPORTED -void PNGAPI -png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent) -{ - png_debug1(1, "in %s storage function", "sRGB"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->srgb_intent = (png_byte)intent; - info_ptr->valid |= PNG_INFO_sRGB; -} - -void PNGAPI -png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, - int intent) -{ -#ifdef PNG_gAMA_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED - float file_gamma; -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - png_fixed_point int_file_gamma; -#endif -#endif -#ifdef PNG_cHRM_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED - float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; -#endif - png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, - int_green_y, int_blue_x, int_blue_y; -#endif - png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_set_sRGB(png_ptr, info_ptr, intent); - -#ifdef PNG_gAMA_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED - file_gamma = (float).45455; - png_set_gAMA(png_ptr, info_ptr, file_gamma); -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED - int_file_gamma = 45455L; - png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma); -#endif -#endif - -#ifdef PNG_cHRM_SUPPORTED - int_white_x = 31270L; - int_white_y = 32900L; - int_red_x = 64000L; - int_red_y = 33000L; - int_green_x = 30000L; - int_green_y = 60000L; - int_blue_x = 15000L; - int_blue_y = 6000L; - -#ifdef PNG_FLOATING_POINT_SUPPORTED - white_x = (float).3127; - white_y = (float).3290; - red_x = (float).64; - red_y = (float).33; - green_x = (float).30; - green_y = (float).60; - blue_x = (float).15; - blue_y = (float).06; -#endif - -#ifdef PNG_FIXED_POINT_SUPPORTED - png_set_cHRM_fixed(png_ptr, info_ptr, - int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, - int_green_y, int_blue_x, int_blue_y); -#endif -#ifdef PNG_FLOATING_POINT_SUPPORTED - png_set_cHRM(png_ptr, info_ptr, - white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y); -#endif -#endif /* cHRM */ -} -#endif /* sRGB */ - - -#ifdef PNG_iCCP_SUPPORTED -void PNGAPI -png_set_iCCP(png_structp png_ptr, png_infop info_ptr, - png_charp name, int compression_type, - png_charp profile, png_uint_32 proflen) -{ - png_charp new_iccp_name; - png_charp new_iccp_profile; - png_uint_32 length; - - png_debug1(1, "in %s storage function", "iCCP"); - - if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) - return; - - length = png_strlen(name)+1; - new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); - if (new_iccp_name == NULL) - { - png_warning(png_ptr, "Insufficient memory to process iCCP chunk."); - return; - } - png_memcpy(new_iccp_name, name, length); - new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen); - if (new_iccp_profile == NULL) - { - png_free (png_ptr, new_iccp_name); - png_warning(png_ptr, - "Insufficient memory to process iCCP profile."); - return; - } - png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); - - png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); - - info_ptr->iccp_proflen = proflen; - info_ptr->iccp_name = new_iccp_name; - info_ptr->iccp_profile = new_iccp_profile; - /* Compression is always zero but is here so the API and info structure - * does not have to change if we introduce multiple compression types - */ - info_ptr->iccp_compression = (png_byte)compression_type; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_ICCP; -#endif - info_ptr->valid |= PNG_INFO_iCCP; -} -#endif - -#ifdef PNG_TEXT_SUPPORTED -void PNGAPI -png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, - int num_text) -{ - int ret; - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); - if (ret) - png_error(png_ptr, "Insufficient memory to store text"); -} - -int /* PRIVATE */ -png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, - int num_text) -{ - int i; - - png_debug1(1, "in %s storage function", ((png_ptr == NULL || - png_ptr->chunk_name[0] == '\0') ? - "text" : (png_const_charp)png_ptr->chunk_name)); - - if (png_ptr == NULL || info_ptr == NULL || num_text == 0) - return(0); - - /* Make sure we have enough space in the "text" array in info_struct - * to hold all of the incoming text_ptr objects. - */ - if (info_ptr->num_text + num_text > info_ptr->max_text) - { - if (info_ptr->text != NULL) - { - png_textp old_text; - int old_max; - - old_max = info_ptr->max_text; - info_ptr->max_text = info_ptr->num_text + num_text + 8; - old_text = info_ptr->text; - info_ptr->text = (png_textp)png_malloc_warn(png_ptr, - (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); - if (info_ptr->text == NULL) - { - png_free(png_ptr, old_text); - return(1); - } - png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * - png_sizeof(png_text))); - png_free(png_ptr, old_text); - } - else - { - info_ptr->max_text = num_text + 8; - info_ptr->num_text = 0; - info_ptr->text = (png_textp)png_malloc_warn(png_ptr, - (png_uint_32)(info_ptr->max_text * png_sizeof(png_text))); - if (info_ptr->text == NULL) - return(1); -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_TEXT; -#endif - } - png_debug1(3, "allocated %d entries for info_ptr->text", - info_ptr->max_text); - } - for (i = 0; i < num_text; i++) - { - png_size_t text_length, key_len; - png_size_t lang_len, lang_key_len; - png_textp textp = &(info_ptr->text[info_ptr->num_text]); - - if (text_ptr[i].key == NULL) - continue; - - key_len = png_strlen(text_ptr[i].key); - - if (text_ptr[i].compression <= 0) - { - lang_len = 0; - lang_key_len = 0; - } - - else -#ifdef PNG_iTXt_SUPPORTED - { - /* Set iTXt data */ - - if (text_ptr[i].lang != NULL) - lang_len = png_strlen(text_ptr[i].lang); - else - lang_len = 0; - if (text_ptr[i].lang_key != NULL) - lang_key_len = png_strlen(text_ptr[i].lang_key); - else - lang_key_len = 0; - } -#else /* PNG_iTXt_SUPPORTED */ - { - png_warning(png_ptr, "iTXt chunk not supported."); - continue; - } -#endif - - if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') - { - text_length = 0; -#ifdef PNG_iTXt_SUPPORTED - if (text_ptr[i].compression > 0) - textp->compression = PNG_ITXT_COMPRESSION_NONE; - else -#endif - textp->compression = PNG_TEXT_COMPRESSION_NONE; - } - - else - { - text_length = png_strlen(text_ptr[i].text); - textp->compression = text_ptr[i].compression; - } - - textp->key = (png_charp)png_malloc_warn(png_ptr, - (png_uint_32) - (key_len + text_length + lang_len + lang_key_len + 4)); - if (textp->key == NULL) - return(1); - png_debug2(2, "Allocated %lu bytes at %x in png_set_text", - (png_uint_32) - (key_len + lang_len + lang_key_len + text_length + 4), - (int)textp->key); - - png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len)); - *(textp->key + key_len) = '\0'; -#ifdef PNG_iTXt_SUPPORTED - if (text_ptr[i].compression > 0) - { - textp->lang = textp->key + key_len + 1; - png_memcpy(textp->lang, text_ptr[i].lang, lang_len); - *(textp->lang + lang_len) = '\0'; - textp->lang_key = textp->lang + lang_len + 1; - png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); - *(textp->lang_key + lang_key_len) = '\0'; - textp->text = textp->lang_key + lang_key_len + 1; - } - else -#endif - { -#ifdef PNG_iTXt_SUPPORTED - textp->lang=NULL; - textp->lang_key=NULL; -#endif - textp->text = textp->key + key_len + 1; - } - if (text_length) - png_memcpy(textp->text, text_ptr[i].text, - (png_size_t)(text_length)); - *(textp->text + text_length) = '\0'; - -#ifdef PNG_iTXt_SUPPORTED - if (textp->compression > 0) - { - textp->text_length = 0; - textp->itxt_length = text_length; - } - else -#endif - - { - textp->text_length = text_length; -#ifdef PNG_iTXt_SUPPORTED - textp->itxt_length = 0; -#endif - } - info_ptr->num_text++; - png_debug1(3, "transferred text chunk %d", info_ptr->num_text); - } - return(0); -} -#endif - -#ifdef PNG_tIME_SUPPORTED -void PNGAPI -png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time) -{ - png_debug1(1, "in %s storage function", "tIME"); - - if (png_ptr == NULL || info_ptr == NULL || - (png_ptr->mode & PNG_WROTE_tIME)) - return; - - png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); - info_ptr->valid |= PNG_INFO_tIME; -} -#endif - -#ifdef PNG_tRNS_SUPPORTED -void PNGAPI -png_set_tRNS(png_structp png_ptr, png_infop info_ptr, - png_bytep trans, int num_trans, png_color_16p trans_values) -{ - png_debug1(1, "in %s storage function", "tRNS"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (trans != NULL) - { - /* It may not actually be necessary to set png_ptr->trans here; - * we do it for backward compatibility with the way the png_handle_tRNS - * function used to do the allocation. - */ - -#ifdef PNG_FREE_ME_SUPPORTED - png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); -#endif - - /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ - png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr, - (png_uint_32)PNG_MAX_PALETTE_LENGTH); - if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) - png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans); - } - - if (trans_values != NULL) - { - int sample_max = (1 << info_ptr->bit_depth); - if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && - (int)trans_values->gray > sample_max) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB && - ((int)trans_values->red > sample_max || - (int)trans_values->green > sample_max || - (int)trans_values->blue > sample_max))) - png_warning(png_ptr, - "tRNS chunk has out-of-range samples for bit_depth"); - png_memcpy(&(info_ptr->trans_values), trans_values, - png_sizeof(png_color_16)); - if (num_trans == 0) - num_trans = 1; - } - - info_ptr->num_trans = (png_uint_16)num_trans; - if (num_trans != 0) - { - info_ptr->valid |= PNG_INFO_tRNS; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_TRNS; -#else - png_ptr->flags |= PNG_FLAG_FREE_TRNS; -#endif - } -} -#endif - -#ifdef PNG_sPLT_SUPPORTED -void PNGAPI -png_set_sPLT(png_structp png_ptr, - png_infop info_ptr, png_sPLT_tp entries, int nentries) -/* - * entries - array of png_sPLT_t structures - * to be added to the list of palettes - * in the info structure. - * nentries - number of palette structures to be - * added. - */ -{ - png_sPLT_tp np; - int i; - - if (png_ptr == NULL || info_ptr == NULL) - return; - - np = (png_sPLT_tp)png_malloc_warn(png_ptr, - (info_ptr->splt_palettes_num + nentries) * - (png_uint_32)png_sizeof(png_sPLT_t)); - if (np == NULL) - { - png_warning(png_ptr, "No memory for sPLT palettes."); - return; - } - - png_memcpy(np, info_ptr->splt_palettes, - info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes=NULL; - - for (i = 0; i < nentries; i++) - { - png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; - png_sPLT_tp from = entries + i; - png_uint_32 length; - - length = png_strlen(from->name) + 1; - to->name = (png_charp)png_malloc_warn(png_ptr, length); - if (to->name == NULL) - { - png_warning(png_ptr, - "Out of memory while processing sPLT chunk"); - continue; - } - png_memcpy(to->name, from->name, length); - to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, - (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry))); - if (to->entries == NULL) - { - png_warning(png_ptr, - "Out of memory while processing sPLT chunk"); - png_free(png_ptr, to->name); - to->name = NULL; - continue; - } - png_memcpy(to->entries, from->entries, - from->nentries * png_sizeof(png_sPLT_entry)); - to->nentries = from->nentries; - to->depth = from->depth; - } - - info_ptr->splt_palettes = np; - info_ptr->splt_palettes_num += nentries; - info_ptr->valid |= PNG_INFO_sPLT; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_SPLT; -#endif -} -#endif /* PNG_sPLT_SUPPORTED */ - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED -void PNGAPI -png_set_unknown_chunks(png_structp png_ptr, - png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns) -{ - png_unknown_chunkp np; - int i; - - if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) - return; - - np = (png_unknown_chunkp)png_malloc_warn(png_ptr, - (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) * - png_sizeof(png_unknown_chunk))); - if (np == NULL) - { - png_warning(png_ptr, - "Out of memory while processing unknown chunk."); - return; - } - - png_memcpy(np, info_ptr->unknown_chunks, - info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk)); - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks = NULL; - - for (i = 0; i < num_unknowns; i++) - { - png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; - png_unknown_chunkp from = unknowns + i; - - png_memcpy((png_charp)to->name, (png_charp)from->name, - png_sizeof(from->name)); - to->name[png_sizeof(to->name)-1] = '\0'; - to->size = from->size; - /* Note our location in the read or write sequence */ - to->location = (png_byte)(png_ptr->mode & 0xff); - - if (from->size == 0) - to->data=NULL; - else - { - to->data = (png_bytep)png_malloc_warn(png_ptr, - (png_uint_32)from->size); - if (to->data == NULL) - { - png_warning(png_ptr, - "Out of memory while processing unknown chunk."); - to->size = 0; - } - else - png_memcpy(to->data, from->data, from->size); - } - } - - info_ptr->unknown_chunks = np; - info_ptr->unknown_chunks_num += num_unknowns; -#ifdef PNG_FREE_ME_SUPPORTED - info_ptr->free_me |= PNG_FREE_UNKN; -#endif -} -void PNGAPI -png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, - int chunk, int location) -{ - if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < - (int)info_ptr->unknown_chunks_num) - info_ptr->unknown_chunks[chunk].location = (png_byte)location; -} -#endif - -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ - defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) -void PNGAPI -png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted) -{ - /* This function is deprecated in favor of png_permit_mng_features() - and will be removed from libpng-1.3.0 */ - - png_debug(1, "in png_permit_empty_plte, DEPRECATED."); - - if (png_ptr == NULL) - return; - png_ptr->mng_features_permitted = (png_byte) - ((png_ptr->mng_features_permitted & (~PNG_FLAG_MNG_EMPTY_PLTE)) | - ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE))); -} -#endif -#endif - -#ifdef PNG_MNG_FEATURES_SUPPORTED -png_uint_32 PNGAPI -png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) -{ - png_debug(1, "in png_permit_mng_features"); - - if (png_ptr == NULL) - return (png_uint_32)0; - png_ptr->mng_features_permitted = - (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); - return (png_uint_32)png_ptr->mng_features_permitted; -} -#endif - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -void PNGAPI -png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep - chunk_list, int num_chunks) -{ - png_bytep new_list, p; - int i, old_num_chunks; - if (png_ptr == NULL) - return; - if (num_chunks == 0) - { - if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) - png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; - else - png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; - - if (keep == PNG_HANDLE_CHUNK_ALWAYS) - png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; - else - png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; - return; - } - if (chunk_list == NULL) - return; - old_num_chunks = png_ptr->num_chunk_list; - new_list=(png_bytep)png_malloc(png_ptr, - (png_uint_32) - (5*(num_chunks + old_num_chunks))); - if (png_ptr->chunk_list != NULL) - { - png_memcpy(new_list, png_ptr->chunk_list, - (png_size_t)(5*old_num_chunks)); - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list=NULL; - } - png_memcpy(new_list + 5*old_num_chunks, chunk_list, - (png_size_t)(5*num_chunks)); - for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) - *p=(png_byte)keep; - png_ptr->num_chunk_list = old_num_chunks + num_chunks; - png_ptr->chunk_list = new_list; -#ifdef PNG_FREE_ME_SUPPORTED - png_ptr->free_me |= PNG_FREE_LIST; -#endif -} -#endif - -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED -void PNGAPI -png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, - png_user_chunk_ptr read_user_chunk_fn) -{ - png_debug(1, "in png_set_read_user_chunk_fn"); - - if (png_ptr == NULL) - return; - - png_ptr->read_user_chunk_fn = read_user_chunk_fn; - png_ptr->user_chunk_ptr = user_chunk_ptr; -} -#endif - -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) -{ - png_debug1(1, "in %s storage function", "rows"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) - png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); - info_ptr->row_pointers = row_pointers; - if (row_pointers) - info_ptr->valid |= PNG_INFO_IDAT; -} -#endif - -void PNGAPI -png_set_compression_buffer_size(png_structp png_ptr, - png_uint_32 size) -{ - if (png_ptr == NULL) - return; - png_free(png_ptr, png_ptr->zbuf); - png_ptr->zbuf_size = (png_size_t)size; - png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; -} - -void PNGAPI -png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) -{ - if (png_ptr && info_ptr) - info_ptr->valid &= ~mask; -} - - -#ifndef PNG_1_0_X -#ifdef PNG_ASSEMBLER_CODE_SUPPORTED -/* Function was added to libpng 1.2.0 and should always exist by default */ -void PNGAPI -png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags) -{ -/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */ - if (png_ptr != NULL) - png_ptr->asm_flags = 0; - asm_flags = asm_flags; /* Quiet the compiler */ -} - -/* This function was added to libpng 1.2.0 */ -void PNGAPI -png_set_mmx_thresholds (png_structp png_ptr, - png_byte mmx_bitdepth_threshold, - png_uint_32 mmx_rowbytes_threshold) -{ -/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */ - if (png_ptr == NULL) - return; - /* Quiet the compiler */ - mmx_bitdepth_threshold = mmx_bitdepth_threshold; - mmx_rowbytes_threshold = mmx_rowbytes_threshold; -} -#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */ - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* This function was added to libpng 1.2.6 */ -void PNGAPI -png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, - png_uint_32 user_height_max) -{ - /* Images with dimensions larger than these limits will be - * rejected by png_set_IHDR(). To accept any PNG datastream - * regardless of dimensions, set both limits to 0x7ffffffL. - */ - if (png_ptr == NULL) - return; - png_ptr->user_width_max = user_width_max; - png_ptr->user_height_max = user_height_max; -} -#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ - - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_set_benign_errors(png_structp png_ptr, int allowed) -{ - png_debug(1, "in png_set_benign_errors"); - - if (allowed) - png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; - else - png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; -} -#endif /* PNG_BENIGN_ERRORS_SUPPORTED */ -#endif /* ?PNG_1_0_X */ -#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtest.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtest.c deleted file mode 100644 index fd0e432..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtest.c +++ /dev/null @@ -1,1705 +0,0 @@ - -/* pngtest.c - a simple test program to test libpng - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This program reads in a PNG image, writes it out again, and then - * compares the two files. If the files are identical, this shows that - * the basic chunk handling, filtering, and (de)compression code is working - * properly. It does not currently test all of the transforms, although - * it probably should. - * - * The program will report "FAIL" in certain legitimate cases: - * 1) when the compression level or filter selection method is changed. - * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192. - * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks - * exist in the input file. - * 4) others not listed here... - * In these cases, it is best to check with another tool such as "pngcheck" - * to see what the differences between the two files are. - * - * If a filename is given on the command-line, then this file is used - * for the input, rather than the default "pngtest.png". This allows - * testing a wide variety of files easily. You can also test a number - * of files at once by typing "pngtest -m file1.png file2.png ..." - */ - -#define PNG_PEDANTIC_WARNINGS -#include "png.h" - -#ifdef _WIN32_WCE -# if _WIN32_WCE < 211 - __error__ (f|w)printf functions are not supported on old WindowsCE.; -# endif -# include <windows.h> -# include <stdlib.h> -# define READFILE(file, data, length, check) \ - if (ReadFile(file, data, length, &check, NULL)) check = 0 -# define WRITEFILE(file, data, length, check)) \ - if (WriteFile(file, data, length, &check, NULL)) check = 0 -# define FCLOSE(file) CloseHandle(file) -#else -# include <stdio.h> -# include <stdlib.h> -# define READFILE(file, data, length, check) \ - check=(png_size_t)fread(data, (png_size_t)1, length, file) -# define WRITEFILE(file, data, length, check) \ - check=(png_size_t)fwrite(data, (png_size_t)1, length, file) -# define FCLOSE(file) fclose(file) -#endif - -#ifndef PNG_STDIO_SUPPORTED -# ifdef _WIN32_WCE - typedef HANDLE png_FILE_p; -# else - typedef FILE * png_FILE_p; -# endif -#endif - -/* Makes pngtest verbose so we can find problems (needs to be before png.h) */ -#ifndef PNG_DEBUG -# define PNG_DEBUG 0 -#endif - -#if !PNG_DEBUG -# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */ -#endif - -/* Turn on CPU timing -#define PNGTEST_TIMING -*/ - -#ifndef PNG_FLOATING_POINT_SUPPORTED -#undef PNGTEST_TIMING -#endif - -#ifdef PNGTEST_TIMING -static float t_start, t_stop, t_decode, t_encode, t_misc; -#include <time.h> -#endif - -#ifdef PNG_TIME_RFC1123_SUPPORTED -#define PNG_tIME_STRING_LENGTH 29 -static int tIME_chunk_present = 0; -static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present"; -#endif - -static int verbose = 0; - -int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); - -#ifdef __TURBOC__ -#include <mem.h> -#endif - -/* Defined so I can write to a file on gui/windowing platforms */ -/* #define STDERR stderr */ -#define STDERR stdout /* For DOS */ - -/* In case a system header (e.g., on AIX) defined jmpbuf */ -#ifdef jmpbuf -# undef jmpbuf -#endif - -/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */ -#ifndef png_jmpbuf -# define png_jmpbuf(png_ptr) png_ptr->jmpbuf -#endif - -/* Example of using row callbacks to make a simple progress meter */ -static int status_pass = 1; -static int status_dots_requested = 0; -static int status_dots = 1; - -void -#ifdef PNG_1_0_X -PNGAPI -#endif -read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); -void -#ifdef PNG_1_0_X -PNGAPI -#endif -read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) -{ - if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) - return; - if (status_pass != pass) - { - fprintf(stdout, "\n Pass %d: ", pass); - status_pass = pass; - status_dots = 31; - } - status_dots--; - if (status_dots == 0) - { - fprintf(stdout, "\n "); - status_dots=30; - } - fprintf(stdout, "r"); -} - -void -#ifdef PNG_1_0_X -PNGAPI -#endif -write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); -void -#ifdef PNG_1_0_X -PNGAPI -#endif -write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) -{ - if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) - return; - fprintf(stdout, "w"); -} - - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED -/* Example of using user transform callback (we don't transform anything, - * but merely examine the row filters. We set this to 256 rather than - * 5 in case illegal filter values are present.) - */ -static png_uint_32 filters_used[256]; -void -#ifdef PNG_1_0_X -PNGAPI -#endif -count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data); -void -#ifdef PNG_1_0_X -PNGAPI -#endif -count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data) -{ - if (png_ptr != NULL && row_info != NULL) - ++filters_used[*(data - 1)]; -} -#endif - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED -/* Example of using user transform callback (we don't transform anything, - * but merely count the zero samples) - */ - -static png_uint_32 zero_samples; - -void -#ifdef PNG_1_0_X -PNGAPI -#endif -count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data); -void -#ifdef PNG_1_0_X -PNGAPI -#endif -count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) -{ - png_bytep dp = data; - if (png_ptr == NULL)return; - - /* Contents of row_info: - * png_uint_32 width width of row - * png_uint_32 rowbytes number of bytes in row - * png_byte color_type color type of pixels - * png_byte bit_depth bit depth of samples - * png_byte channels number of channels (1-4) - * png_byte pixel_depth bits per pixel (depth*channels) - */ - - /* Counts the number of zero samples (or zero pixels if color_type is 3 */ - - if (row_info->color_type == 0 || row_info->color_type == 3) - { - int pos = 0; - png_uint_32 n, nstop; - for (n = 0, nstop=row_info->width; n<nstop; n++) - { - if (row_info->bit_depth == 1) - { - if (((*dp << pos++ ) & 0x80) == 0) - zero_samples++; - if (pos == 8) - { - pos = 0; - dp++; - } - } - if (row_info->bit_depth == 2) - { - if (((*dp << (pos+=2)) & 0xc0) == 0) - zero_samples++; - if (pos == 8) - { - pos = 0; - dp++; - } - } - if (row_info->bit_depth == 4) - { - if (((*dp << (pos+=4)) & 0xf0) == 0) - zero_samples++; - if (pos == 8) - { - pos = 0; - dp++; - } - } - if (row_info->bit_depth == 8) - if (*dp++ == 0) - zero_samples++; - if (row_info->bit_depth == 16) - { - if ((*dp | *(dp+1)) == 0) - zero_samples++; - dp+=2; - } - } - } - else /* Other color types */ - { - png_uint_32 n, nstop; - int channel; - int color_channels = row_info->channels; - if (row_info->color_type > 3)color_channels--; - - for (n = 0, nstop=row_info->width; n<nstop; n++) - { - for (channel = 0; channel < color_channels; channel++) - { - if (row_info->bit_depth == 8) - if (*dp++ == 0) - zero_samples++; - if (row_info->bit_depth == 16) - { - if ((*dp | *(dp+1)) == 0) - zero_samples++; - dp+=2; - } - } - if (row_info->color_type > 3) - { - dp++; - if (row_info->bit_depth == 16) - dp++; - } - } - } -} -#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */ - -static int wrote_question = 0; - -#ifndef PNG_STDIO_SUPPORTED -/* START of code to validate stdio-free compilation */ -/* These copies of the default read/write functions come from pngrio.c and - * pngwio.c. They allow "don't include stdio" testing of the library. - * This is the function that does the actual reading of data. If you are - * not reading from a standard C stream, you should create a replacement - * read_data function and use it at run time with png_set_read_fn(), rather - * than changing the library. - */ - -#ifndef USE_FAR_KEYWORD -static void -pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check = 0; - png_voidp io_ptr; - - /* fread() returns 0 on error, so it is OK to store this in a png_size_t - * instead of an int, which is what fread() actually returns. - */ - io_ptr = png_get_io_ptr(png_ptr); - if (io_ptr != NULL) - { - READFILE((png_FILE_p)io_ptr, data, length, check); - } - - if (check != length) - { - png_error(png_ptr, "Read Error!"); - } -} -#else -/* This is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -static void -pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - int check; - png_byte *n_data; - png_FILE_p io_ptr; - - /* Check if data really is near. If so, use usual code. */ - n_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); - if ((png_bytep)n_data == data) - { - READFILE(io_ptr, n_data, length, check); - } - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t read, remaining, err; - check = 0; - remaining = length; - do - { - read = MIN(NEAR_BUF_SIZE, remaining); - READFILE(io_ptr, buf, 1, err); - png_memcpy(data, buf, read); /* Copy far buffer to near buffer */ - if (err != read) - break; - else - check += err; - data += read; - remaining -= read; - } - while (remaining != 0); - } - if (check != length) - png_error(png_ptr, "read Error"); -} -#endif /* USE_FAR_KEYWORD */ - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -static void -pngtest_flush(png_structp png_ptr) -{ - /* Do nothing; fflush() is said to be just a waste of energy. */ - png_ptr = png_ptr; /* Stifle compiler warning */ -} -#endif - -/* This is the function that does the actual writing of data. If you are - * not writing to a standard C stream, you should create a replacement - * write_data function and use it at run time with png_set_write_fn(), rather - * than changing the library. - */ -#ifndef USE_FAR_KEYWORD -static void -pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_uint_32 check; - - WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check); - if (check != length) - { - png_error(png_ptr, "Write Error"); - } -} -#else -/* This is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -static void -pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_uint_32 check; - png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ - png_FILE_p io_ptr; - - /* Check if data really is near. If so, use usual code. */ - near_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); - if ((png_bytep)near_data == data) - { - WRITEFILE(io_ptr, near_data, length, check); - } - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t written, remaining, err; - check = 0; - remaining = length; - do - { - written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ - WRITEFILE(io_ptr, buf, written, err); - if (err != written) - break; - else - check += err; - data += written; - remaining -= written; - } - while (remaining != 0); - } - if (check != length) - { - png_error(png_ptr, "Write Error"); - } -} -#endif /* USE_FAR_KEYWORD */ - -/* This function is called when there is a warning, but the library thinks - * it can continue anyway. Replacement functions don't have to do anything - * here if you don't want to. In the default configuration, png_ptr is - * not used, but it is passed in case it may be useful. - */ -static void -pngtest_warning(png_structp png_ptr, png_const_charp message) -{ - PNG_CONST char *name = "UNKNOWN (ERROR!)"; - char *test; - test = png_get_error_ptr(png_ptr); - if (test == NULL) - fprintf(STDERR, "%s: libpng warning: %s\n", name, message); - else - fprintf(STDERR, "%s: libpng warning: %s\n", test, message); -} - -/* This is the default error handling function. Note that replacements for - * this function MUST NOT RETURN, or the program will likely crash. This - * function is used by default, or if the program supplies NULL for the - * error function pointer in png_set_error_fn(). - */ -static void -pngtest_error(png_structp png_ptr, png_const_charp message) -{ - pngtest_warning(png_ptr, message); - /* We can return because png_error calls the default handler, which is - * actually OK in this case. - */ -} -#endif /* !PNG_STDIO_SUPPORTED */ -/* END of code to validate stdio-free compilation */ - -/* START of code to validate memory allocation and deallocation */ -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - -/* Allocate memory. For reasonable files, size should never exceed - * 64K. However, zlib may allocate more then 64K if you don't tell - * it not to. See zconf.h and png.h for more information. zlib does - * need to allocate exactly 64K, so whatever you call here must - * have the ability to do that. - * - * This piece of code can be compiled to validate max 64K allocations - * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. - */ -typedef struct memory_information -{ - png_uint_32 size; - png_voidp pointer; - struct memory_information FAR *next; -} memory_information; -typedef memory_information FAR *memory_infop; - -static memory_infop pinformation = NULL; -static int current_allocation = 0; -static int maximum_allocation = 0; -static int total_allocation = 0; -static int num_allocations = 0; - -png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size)); -void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr)); - -png_voidp -png_debug_malloc(png_structp png_ptr, png_uint_32 size) -{ - - /* png_malloc has already tested for NULL; png_create_struct calls - * png_debug_malloc directly, with png_ptr == NULL which is OK - */ - - if (size == 0) - return (NULL); - - /* This calls the library allocator twice, once to get the requested - buffer and once to get a new free list entry. */ - { - /* Disable malloc_fn and free_fn */ - memory_infop pinfo; - png_set_mem_fn(png_ptr, NULL, NULL, NULL); - pinfo = (memory_infop)png_malloc(png_ptr, - (png_uint_32)png_sizeof(*pinfo)); - pinfo->size = size; - current_allocation += size; - total_allocation += size; - num_allocations ++; - if (current_allocation > maximum_allocation) - maximum_allocation = current_allocation; - pinfo->pointer = (png_voidp)png_malloc(png_ptr, size); - /* Restore malloc_fn and free_fn */ - png_set_mem_fn(png_ptr, - png_voidp_NULL, (png_malloc_ptr)png_debug_malloc, - (png_free_ptr)png_debug_free); - if (size != 0 && pinfo->pointer == NULL) - { - current_allocation -= size; - total_allocation -= size; - png_error(png_ptr, - "out of memory in pngtest->png_debug_malloc."); - } - pinfo->next = pinformation; - pinformation = pinfo; - /* Make sure the caller isn't assuming zeroed memory. */ - png_memset(pinfo->pointer, 0xdd, pinfo->size); - if (verbose) - printf("png_malloc %lu bytes at %x\n", (unsigned long)size, - pinfo->pointer); - return (png_voidp)(pinfo->pointer); - } -} - -/* Free a pointer. It is removed from the list at the same time. */ -void -png_debug_free(png_structp png_ptr, png_voidp ptr) -{ - if (png_ptr == NULL) - fprintf(STDERR, "NULL pointer to png_debug_free.\n"); - if (ptr == 0) - { -#if 0 /* This happens all the time. */ - fprintf(STDERR, "WARNING: freeing NULL pointer\n"); -#endif - return; - } - - /* Unlink the element from the list. */ - { - memory_infop FAR *ppinfo = &pinformation; - for (;;) - { - memory_infop pinfo = *ppinfo; - if (pinfo->pointer == ptr) - { - *ppinfo = pinfo->next; - current_allocation -= pinfo->size; - if (current_allocation < 0) - fprintf(STDERR, "Duplicate free of memory\n"); - /* We must free the list element too, but first kill - the memory that is to be freed. */ - png_memset(ptr, 0x55, pinfo->size); - png_free_default(png_ptr, pinfo); - pinfo = NULL; - break; - } - if (pinfo->next == NULL) - { - fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr); - break; - } - ppinfo = &pinfo->next; - } - } - - /* Finally free the data. */ - if (verbose) - printf("Freeing %x\n", ptr); - png_free_default(png_ptr, ptr); - ptr = NULL; -} -#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */ -/* END of code to test memory allocation/deallocation */ - - -/* Demonstration of user chunk support of the sTER and vpAg chunks */ -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED - -/* (sTER is a public chunk not yet known by libpng. vpAg is a private -chunk used in ImageMagick to store "virtual page" size). */ - -static png_uint_32 user_chunk_data[4]; - - /* 0: sTER mode + 1 - * 1: vpAg width - * 2: vpAg height - * 3: vpAg units - */ - -static int read_user_chunk_callback(png_struct *png_ptr, - png_unknown_chunkp chunk) -{ - png_uint_32 - *my_user_chunk_data; - - /* Return one of the following: - * return (-n); chunk had an error - * return (0); did not recognize - * return (n); success - * - * The unknown chunk structure contains the chunk data: - * png_byte name[5]; - * png_byte *data; - * png_size_t size; - * - * Note that libpng has already taken care of the CRC handling. - */ - - if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */ - chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */ - { - /* Found sTER chunk */ - if (chunk->size != 1) - return (-1); /* Error return */ - if (chunk->data[0] != 0 && chunk->data[0] != 1) - return (-1); /* Invalid mode */ - my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); - my_user_chunk_data[0]=chunk->data[0]+1; - return (1); - } - - if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */ - chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */ - return (0); /* Did not recognize */ - - /* Found ImageMagick vpAg chunk */ - - if (chunk->size != 9) - return (-1); /* Error return */ - - my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); - - my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data); - my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4); - my_user_chunk_data[3]=(png_uint_32)chunk->data[8]; - - return (1); - -} -#endif -/* END of code to demonstrate user chunk support */ - -/* Test one file */ -int -test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) -{ - static png_FILE_p fpin; - static png_FILE_p fpout; /* "static" prevents setjmp corruption */ - png_structp read_ptr; - png_infop read_info_ptr, end_info_ptr; -#ifdef PNG_WRITE_SUPPORTED - png_structp write_ptr; - png_infop write_info_ptr; - png_infop write_end_info_ptr; -#else - png_structp write_ptr = NULL; - png_infop write_info_ptr = NULL; - png_infop write_end_info_ptr = NULL; -#endif - png_bytep row_buf; - png_uint_32 y; - png_uint_32 width, height; - int num_pass, pass; - int bit_depth, color_type; -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - jmp_buf jmpbuf; -#endif -#endif - -#ifdef _WIN32_WCE - TCHAR path[MAX_PATH]; -#endif - char inbuf[256], outbuf[256]; - - row_buf = NULL; - -#ifdef _WIN32_WCE - MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH); - if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, - NULL)) == INVALID_HANDLE_VALUE) -#else - if ((fpin = fopen(inname, "rb")) == NULL) -#endif - { - fprintf(STDERR, "Could not find input file %s\n", inname); - return (1); - } - -#ifdef _WIN32_WCE - MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH); - if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, - 0, NULL)) == INVALID_HANDLE_VALUE) -#else - if ((fpout = fopen(outname, "wb")) == NULL) -#endif - { - fprintf(STDERR, "Could not open output file %s\n", outname); - FCLOSE(fpin); - return (1); - } - - png_debug(0, "Allocating read and write structures"); -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - read_ptr = - png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL, - png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL, - (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free); -#else - read_ptr = - png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL, - png_error_ptr_NULL, png_error_ptr_NULL); -#endif -#ifndef PNG_STDIO_SUPPORTED - png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error, - pngtest_warning); -#endif - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED - user_chunk_data[0] = 0; - user_chunk_data[1] = 0; - user_chunk_data[2] = 0; - user_chunk_data[3] = 0; - png_set_read_user_chunk_fn(read_ptr, user_chunk_data, - read_user_chunk_callback); - -#endif -#ifdef PNG_WRITE_SUPPORTED -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - write_ptr = - png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL, - png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL, - (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free); -#else - write_ptr = - png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL, - png_error_ptr_NULL, png_error_ptr_NULL); -#endif -#ifndef PNG_STDIO_SUPPORTED - png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error, - pngtest_warning); -#endif -#endif - png_debug(0, "Allocating read_info, write_info and end_info structures"); - read_info_ptr = png_create_info_struct(read_ptr); - end_info_ptr = png_create_info_struct(read_ptr); -#ifdef PNG_WRITE_SUPPORTED - write_info_ptr = png_create_info_struct(write_ptr); - write_end_info_ptr = png_create_info_struct(write_ptr); -#endif - -#ifdef PNG_SETJMP_SUPPORTED - png_debug(0, "Setting jmpbuf for read struct"); -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) -#else - if (setjmp(png_jmpbuf(read_ptr))) -#endif - { - fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname); - png_free(read_ptr, row_buf); - row_buf = NULL; - png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); -#ifdef PNG_WRITE_SUPPORTED - png_destroy_info_struct(write_ptr, &write_end_info_ptr); - png_destroy_write_struct(&write_ptr, &write_info_ptr); -#endif - FCLOSE(fpin); - FCLOSE(fpout); - return (1); - } -#ifdef USE_FAR_KEYWORD - png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf)); -#endif - -#ifdef PNG_WRITE_SUPPORTED - png_debug(0, "Setting jmpbuf for write struct"); -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) -#else - if (setjmp(png_jmpbuf(write_ptr))) -#endif - { - fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname); - png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); - png_destroy_info_struct(write_ptr, &write_end_info_ptr); -#ifdef PNG_WRITE_SUPPORTED - png_destroy_write_struct(&write_ptr, &write_info_ptr); -#endif - FCLOSE(fpin); - FCLOSE(fpout); - return (1); - } -#ifdef USE_FAR_KEYWORD - png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf)); -#endif -#endif -#endif - - png_debug(0, "Initializing input and output streams"); -#ifdef PNG_STDIO_SUPPORTED - png_init_io(read_ptr, fpin); -# ifdef PNG_WRITE_SUPPORTED - png_init_io(write_ptr, fpout); -# endif -#else - png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data); -# ifdef PNG_WRITE_SUPPORTED - png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data, -# ifdef PNG_WRITE_FLUSH_SUPPORTED - pngtest_flush); -# else - NULL); -# endif -# endif -#endif - if (status_dots_requested == 1) - { -#ifdef PNG_WRITE_SUPPORTED - png_set_write_status_fn(write_ptr, write_row_callback); -#endif - png_set_read_status_fn(read_ptr, read_row_callback); - } - else - { -#ifdef PNG_WRITE_SUPPORTED - png_set_write_status_fn(write_ptr, png_write_status_ptr_NULL); -#endif - png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL); - } - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - { - int i; - for (i = 0; i<256; i++) - filters_used[i] = 0; - png_set_read_user_transform_fn(read_ptr, count_filters); - } -#endif -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - zero_samples = 0; - png_set_write_user_transform_fn(write_ptr, count_zero_samples); -#endif - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED -# ifndef PNG_HANDLE_CHUNK_ALWAYS -# define PNG_HANDLE_CHUNK_ALWAYS 3 -# endif - png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS, - png_bytep_NULL, 0); -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED -# ifndef PNG_HANDLE_CHUNK_IF_SAFE -# define PNG_HANDLE_CHUNK_IF_SAFE 2 -# endif - png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE, - png_bytep_NULL, 0); -#endif - - png_debug(0, "Reading info struct"); - png_read_info(read_ptr, read_info_ptr); - - png_debug(0, "Transferring info struct"); - { - int interlace_type, compression_type, filter_type; - - if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth, - &color_type, &interlace_type, &compression_type, &filter_type)) - { - png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth, -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - color_type, interlace_type, compression_type, filter_type); -#else - color_type, PNG_INTERLACE_NONE, compression_type, filter_type); -#endif - } - } -#ifdef PNG_FIXED_POINT_SUPPORTED -#ifdef PNG_cHRM_SUPPORTED - { - png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x, - blue_y; - if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, - &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y)) - { - png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x, - red_y, green_x, green_y, blue_x, blue_y); - } - } -#endif -#ifdef PNG_gAMA_SUPPORTED - { - png_fixed_point gamma; - - if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma)) - png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma); - } -#endif -#else /* Use floating point versions */ -#ifdef PNG_FLOATING_POINT_SUPPORTED -#ifdef PNG_cHRM_SUPPORTED - { - double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, - blue_y; - if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x, - &red_y, &green_x, &green_y, &blue_x, &blue_y)) - { - png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x, - red_y, green_x, green_y, blue_x, blue_y); - } - } -#endif -#ifdef PNG_gAMA_SUPPORTED - { - double gamma; - - if (png_get_gAMA(read_ptr, read_info_ptr, &gamma)) - png_set_gAMA(write_ptr, write_info_ptr, gamma); - } -#endif -#endif /* Floating point */ -#endif /* Fixed point */ -#ifdef PNG_iCCP_SUPPORTED - { - png_charp name; - png_charp profile; - png_uint_32 proflen; - int compression_type; - - if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type, - &profile, &proflen)) - { - png_set_iCCP(write_ptr, write_info_ptr, name, compression_type, - profile, proflen); - } - } -#endif -#ifdef PNG_sRGB_SUPPORTED - { - int intent; - - if (png_get_sRGB(read_ptr, read_info_ptr, &intent)) - png_set_sRGB(write_ptr, write_info_ptr, intent); - } -#endif - { - png_colorp palette; - int num_palette; - - if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette)) - png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette); - } -#ifdef PNG_bKGD_SUPPORTED - { - png_color_16p background; - - if (png_get_bKGD(read_ptr, read_info_ptr, &background)) - { - png_set_bKGD(write_ptr, write_info_ptr, background); - } - } -#endif -#ifdef PNG_hIST_SUPPORTED - { - png_uint_16p hist; - - if (png_get_hIST(read_ptr, read_info_ptr, &hist)) - png_set_hIST(write_ptr, write_info_ptr, hist); - } -#endif -#ifdef PNG_oFFs_SUPPORTED - { - png_int_32 offset_x, offset_y; - int unit_type; - - if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y, - &unit_type)) - { - png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type); - } - } -#endif -#ifdef PNG_pCAL_SUPPORTED - { - png_charp purpose, units; - png_charpp params; - png_int_32 X0, X1; - int type, nparams; - - if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type, - &nparams, &units, ¶ms)) - { - png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type, - nparams, units, params); - } - } -#endif -#ifdef PNG_pHYs_SUPPORTED - { - png_uint_32 res_x, res_y; - int unit_type; - - if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type)) - png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type); - } -#endif -#ifdef PNG_sBIT_SUPPORTED - { - png_color_8p sig_bit; - - if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit)) - png_set_sBIT(write_ptr, write_info_ptr, sig_bit); - } -#endif -#ifdef PNG_sCAL_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED - { - int unit; - double scal_width, scal_height; - - if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width, - &scal_height)) - { - png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height); - } - } -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - { - int unit; - png_charp scal_width, scal_height; - - if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width, - &scal_height)) - { - png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, - scal_height); - } - } -#endif -#endif -#endif -#ifdef PNG_TEXT_SUPPORTED - { - png_textp text_ptr; - int num_text; - - if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0) - { - png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text); - png_set_text(write_ptr, write_info_ptr, text_ptr, num_text); - } - } -#endif -#ifdef PNG_tIME_SUPPORTED - { - png_timep mod_time; - - if (png_get_tIME(read_ptr, read_info_ptr, &mod_time)) - { - png_set_tIME(write_ptr, write_info_ptr, mod_time); -#ifdef PNG_TIME_RFC1123_SUPPORTED - /* We have to use png_memcpy instead of "=" because the string - * pointed to by png_convert_to_rfc1123() gets free'ed before - * we use it. - */ - png_memcpy(tIME_string, - png_convert_to_rfc1123(read_ptr, mod_time), - png_sizeof(tIME_string)); - tIME_string[png_sizeof(tIME_string) - 1] = '\0'; - tIME_chunk_present++; -#endif /* PNG_TIME_RFC1123_SUPPORTED */ - } - } -#endif -#ifdef PNG_tRNS_SUPPORTED - { - png_bytep trans; - int num_trans; - png_color_16p trans_values; - - if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans, - &trans_values)) - { - int sample_max = (1 << bit_depth); - /* libpng doesn't reject a tRNS chunk with out-of-range samples */ - if (!((color_type == PNG_COLOR_TYPE_GRAY && - (int)trans_values->gray > sample_max) || - (color_type == PNG_COLOR_TYPE_RGB && - ((int)trans_values->red > sample_max || - (int)trans_values->green > sample_max || - (int)trans_values->blue > sample_max)))) - png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans, - trans_values); - } - } -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - { - png_unknown_chunkp unknowns; - int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr, - &unknowns); - if (num_unknowns) - { - png_size_t i; - png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns, - num_unknowns); - /* Copy the locations from the read_info_ptr. The automatically - * generated locations in write_info_ptr are wrong because we - * haven't written anything yet. - */ - for (i = 0; i < (png_size_t)num_unknowns; i++) - png_set_unknown_chunk_location(write_ptr, write_info_ptr, i, - unknowns[i].location); - } - } -#endif - -#ifdef PNG_WRITE_SUPPORTED - png_debug(0, "Writing info struct"); - -/* If we wanted, we could write info in two steps: - * png_write_info_before_PLTE(write_ptr, write_info_ptr); - */ - png_write_info(write_ptr, write_info_ptr); - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED - if (user_chunk_data[0] != 0) - { - png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}; - - unsigned char - ster_chunk_data[1]; - - if (verbose) - fprintf(STDERR, "\n stereo mode = %lu\n", - (unsigned long)(user_chunk_data[0] - 1)); - ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1); - png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1); - } - if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0) - { - png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'}; - - unsigned char - vpag_chunk_data[9]; - - if (verbose) - fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n", - (unsigned long)user_chunk_data[1], - (unsigned long)user_chunk_data[2], - (unsigned long)user_chunk_data[3]); - png_save_uint_32(vpag_chunk_data, user_chunk_data[1]); - png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]); - vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff); - png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9); - } - -#endif -#endif - -#ifdef SINGLE_ROWBUF_ALLOC - png_debug(0, "Allocating row buffer..."); - row_buf = (png_bytep)png_malloc(read_ptr, - png_get_rowbytes(read_ptr, read_info_ptr)); - png_debug1(0, "0x%08lx", (unsigned long)row_buf); -#endif /* SINGLE_ROWBUF_ALLOC */ - png_debug(0, "Writing row data"); - -#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ - defined(PNG_WRITE_INTERLACING_SUPPORTED) - num_pass = png_set_interlace_handling(read_ptr); -# ifdef PNG_WRITE_SUPPORTED - png_set_interlace_handling(write_ptr); -# endif -#else - num_pass = 1; -#endif - -#ifdef PNGTEST_TIMING - t_stop = (float)clock(); - t_misc += (t_stop - t_start); - t_start = t_stop; -#endif - for (pass = 0; pass < num_pass; pass++) - { - png_debug1(0, "Writing row data for pass %d", pass); - for (y = 0; y < height; y++) - { -#ifndef SINGLE_ROWBUF_ALLOC - png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y); - row_buf = (png_bytep)png_malloc(read_ptr, - png_get_rowbytes(read_ptr, read_info_ptr)); - png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf, - png_get_rowbytes(read_ptr, read_info_ptr)); -#endif /* !SINGLE_ROWBUF_ALLOC */ - png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1); - -#ifdef PNG_WRITE_SUPPORTED -#ifdef PNGTEST_TIMING - t_stop = (float)clock(); - t_decode += (t_stop - t_start); - t_start = t_stop; -#endif - png_write_rows(write_ptr, (png_bytepp)&row_buf, 1); -#ifdef PNGTEST_TIMING - t_stop = (float)clock(); - t_encode += (t_stop - t_start); - t_start = t_stop; -#endif -#endif /* PNG_WRITE_SUPPORTED */ - -#ifndef SINGLE_ROWBUF_ALLOC - png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y); - png_free(read_ptr, row_buf); - row_buf = NULL; -#endif /* !SINGLE_ROWBUF_ALLOC */ - } - } - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1); -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1); -#endif - - png_debug(0, "Reading and writing end_info data"); - - png_read_end(read_ptr, end_info_ptr); -#ifdef PNG_TEXT_SUPPORTED - { - png_textp text_ptr; - int num_text; - - if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0) - { - png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text); - png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text); - } - } -#endif -#ifdef PNG_tIME_SUPPORTED - { - png_timep mod_time; - - if (png_get_tIME(read_ptr, end_info_ptr, &mod_time)) - { - png_set_tIME(write_ptr, write_end_info_ptr, mod_time); -#ifdef PNG_TIME_RFC1123_SUPPORTED - /* We have to use png_memcpy instead of "=" because the string - pointed to by png_convert_to_rfc1123() gets free'ed before - we use it */ - png_memcpy(tIME_string, - png_convert_to_rfc1123(read_ptr, mod_time), - png_sizeof(tIME_string)); - tIME_string[png_sizeof(tIME_string) - 1] = '\0'; - tIME_chunk_present++; -#endif /* PNG_TIME_RFC1123_SUPPORTED */ - } - } -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - { - png_unknown_chunkp unknowns; - int num_unknowns; - num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr, - &unknowns); - if (num_unknowns) - { - png_size_t i; - png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns, - num_unknowns); - /* Copy the locations from the read_info_ptr. The automatically - * generated locations in write_end_info_ptr are wrong because we - * haven't written the end_info yet. - */ - for (i = 0; i < (png_size_t)num_unknowns; i++) - png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i, - unknowns[i].location); - } - } -#endif -#ifdef PNG_WRITE_SUPPORTED - png_write_end(write_ptr, write_end_info_ptr); -#endif - -#ifdef PNG_EASY_ACCESS_SUPPORTED - if (verbose) - { - png_uint_32 iwidth, iheight; - iwidth = png_get_image_width(write_ptr, write_info_ptr); - iheight = png_get_image_height(write_ptr, write_info_ptr); - fprintf(STDERR, "\n Image width = %lu, height = %lu\n", - (unsigned long)iwidth, (unsigned long)iheight); - } -#endif - - png_debug(0, "Destroying data structs"); -#ifdef SINGLE_ROWBUF_ALLOC - png_debug(1, "destroying row_buf for read_ptr"); - png_free(read_ptr, row_buf); - row_buf = NULL; -#endif /* SINGLE_ROWBUF_ALLOC */ - png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr"); - png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); -#ifdef PNG_WRITE_SUPPORTED - png_debug(1, "destroying write_end_info_ptr"); - png_destroy_info_struct(write_ptr, &write_end_info_ptr); - png_debug(1, "destroying write_ptr, write_info_ptr"); - png_destroy_write_struct(&write_ptr, &write_info_ptr); -#endif - png_debug(0, "Destruction complete."); - - FCLOSE(fpin); - FCLOSE(fpout); - - png_debug(0, "Opening files for comparison"); -#ifdef _WIN32_WCE - MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH); - if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, - 0, NULL)) == INVALID_HANDLE_VALUE) -#else - if ((fpin = fopen(inname, "rb")) == NULL) -#endif - { - fprintf(STDERR, "Could not find file %s\n", inname); - return (1); - } - -#ifdef _WIN32_WCE - MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH); - if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, - 0, NULL)) == INVALID_HANDLE_VALUE) -#else - if ((fpout = fopen(outname, "rb")) == NULL) -#endif - { - fprintf(STDERR, "Could not find file %s\n", outname); - FCLOSE(fpin); - return (1); - } - - for (;;) - { - png_size_t num_in, num_out; - - READFILE(fpin, inbuf, 1, num_in); - READFILE(fpout, outbuf, 1, num_out); - - if (num_in != num_out) - { - fprintf(STDERR, "\nFiles %s and %s are of a different size\n", - inname, outname); - if (wrote_question == 0) - { - fprintf(STDERR, - " Was %s written with the same maximum IDAT chunk size (%d bytes),", - inname, PNG_ZBUF_SIZE); - fprintf(STDERR, - "\n filtering heuristic (libpng default), compression"); - fprintf(STDERR, - " level (zlib default),\n and zlib version (%s)?\n\n", - ZLIB_VERSION); - wrote_question = 1; - } - FCLOSE(fpin); - FCLOSE(fpout); - return (0); - } - - if (!num_in) - break; - - if (png_memcmp(inbuf, outbuf, num_in)) - { - fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname); - if (wrote_question == 0) - { - fprintf(STDERR, - " Was %s written with the same maximum IDAT chunk size (%d bytes),", - inname, PNG_ZBUF_SIZE); - fprintf(STDERR, - "\n filtering heuristic (libpng default), compression"); - fprintf(STDERR, - " level (zlib default),\n and zlib version (%s)?\n\n", - ZLIB_VERSION); - wrote_question = 1; - } - FCLOSE(fpin); - FCLOSE(fpout); - return (0); - } - } - - FCLOSE(fpin); - FCLOSE(fpout); - - return (0); -} - -/* Input and output filenames */ -#ifdef RISCOS -static PNG_CONST char *inname = "pngtest/png"; -static PNG_CONST char *outname = "pngout/png"; -#else -static PNG_CONST char *inname = "pngtest.png"; -static PNG_CONST char *outname = "pngout.png"; -#endif - -int -main(int argc, char *argv[]) -{ - int multiple = 0; - int ierror = 0; - - fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); - fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION); - fprintf(STDERR, "%s", png_get_copyright(NULL)); - /* Show the version of libpng used in building the library */ - fprintf(STDERR, " library (%lu):%s", - (unsigned long)png_access_version_number(), - png_get_header_version(NULL)); - /* Show the version of libpng used in building the application */ - fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER, - PNG_HEADER_VERSION_STRING); - fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n", - (long)png_sizeof(png_struct), (long)png_sizeof(png_info)); - - /* Do some consistency checking on the memory allocation settings, I'm - * not sure this matters, but it is nice to know, the first of these - * tests should be impossible because of the way the macros are set - * in pngconf.h - */ -#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) - fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n"); -#endif - /* I think the following can happen. */ -#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K) - fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n"); -#endif - - if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING)) - { - fprintf(STDERR, - "Warning: versions are different between png.h and png.c\n"); - fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING); - fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver); - ++ierror; - } - - if (argc > 1) - { - if (strcmp(argv[1], "-m") == 0) - { - multiple = 1; - status_dots_requested = 0; - } - else if (strcmp(argv[1], "-mv") == 0 || - strcmp(argv[1], "-vm") == 0 ) - { - multiple = 1; - verbose = 1; - status_dots_requested = 1; - } - else if (strcmp(argv[1], "-v") == 0) - { - verbose = 1; - status_dots_requested = 1; - inname = argv[2]; - } - else - { - inname = argv[1]; - status_dots_requested = 0; - } - } - - if (!multiple && argc == 3 + verbose) - outname = argv[2 + verbose]; - - if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2)) - { - fprintf(STDERR, - "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n", - argv[0], argv[0]); - fprintf(STDERR, - " reads/writes one PNG file (without -m) or multiple files (-m)\n"); - fprintf(STDERR, - " with -m %s is used as a temporary file\n", outname); - exit(1); - } - - if (multiple) - { - int i; -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - int allocation_now = current_allocation; -#endif - for (i=2; i<argc; ++i) - { - int kerror; - fprintf(STDERR, "\n Testing %s:", argv[i]); - kerror = test_one_file(argv[i], outname); - if (kerror == 0) - { -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - int k; -#endif -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - fprintf(STDERR, "\n PASS (%lu zero samples)\n", - (unsigned long)zero_samples); -#else - fprintf(STDERR, " PASS\n"); -#endif -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - for (k = 0; k<256; k++) - if (filters_used[k]) - fprintf(STDERR, " Filter %d was used %lu times\n", - k, (unsigned long)filters_used[k]); -#endif -#ifdef PNG_TIME_RFC1123_SUPPORTED - if (tIME_chunk_present != 0) - fprintf(STDERR, " tIME = %s\n", tIME_string); - tIME_chunk_present = 0; -#endif /* PNG_TIME_RFC1123_SUPPORTED */ - } - else - { - fprintf(STDERR, " FAIL\n"); - ierror += kerror; - } -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - if (allocation_now != current_allocation) - fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", - current_allocation - allocation_now); - if (current_allocation != 0) - { - memory_infop pinfo = pinformation; - - fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", - current_allocation); - while (pinfo != NULL) - { - fprintf(STDERR, " %lu bytes at %x\n", - (unsigned long)pinfo->size, - (unsigned int) pinfo->pointer); - pinfo = pinfo->next; - } - } -#endif - } -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - fprintf(STDERR, " Current memory allocation: %10d bytes\n", - current_allocation); - fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", - maximum_allocation); - fprintf(STDERR, " Total memory allocation: %10d bytes\n", - total_allocation); - fprintf(STDERR, " Number of allocations: %10d\n", - num_allocations); -#endif - } - else - { - int i; - for (i = 0; i<3; ++i) - { - int kerror; -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - int allocation_now = current_allocation; -#endif - if (i == 1) status_dots_requested = 1; - else if (verbose == 0)status_dots_requested = 0; - if (i == 0 || verbose == 1 || ierror != 0) - fprintf(STDERR, "\n Testing %s:", inname); - kerror = test_one_file(inname, outname); - if (kerror == 0) - { - if (verbose == 1 || i == 2) - { -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - int k; -#endif -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - fprintf(STDERR, "\n PASS (%lu zero samples)\n", - (unsigned long)zero_samples); -#else - fprintf(STDERR, " PASS\n"); -#endif -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - for (k = 0; k<256; k++) - if (filters_used[k]) - fprintf(STDERR, " Filter %d was used %lu times\n", - k, (unsigned long)filters_used[k]); -#endif -#ifdef PNG_TIME_RFC1123_SUPPORTED - if (tIME_chunk_present != 0) - fprintf(STDERR, " tIME = %s\n", tIME_string); -#endif /* PNG_TIME_RFC1123_SUPPORTED */ - } - } - else - { - if (verbose == 0 && i != 2) - fprintf(STDERR, "\n Testing %s:", inname); - fprintf(STDERR, " FAIL\n"); - ierror += kerror; - } -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - if (allocation_now != current_allocation) - fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", - current_allocation - allocation_now); - if (current_allocation != 0) - { - memory_infop pinfo = pinformation; - - fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", - current_allocation); - while (pinfo != NULL) - { - fprintf(STDERR, " %lu bytes at %x\n", - (unsigned long)pinfo->size, (unsigned int)pinfo->pointer); - pinfo = pinfo->next; - } - } -#endif - } -#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG - fprintf(STDERR, " Current memory allocation: %10d bytes\n", - current_allocation); - fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", - maximum_allocation); - fprintf(STDERR, " Total memory allocation: %10d bytes\n", - total_allocation); - fprintf(STDERR, " Number of allocations: %10d\n", - num_allocations); -#endif - } - -#ifdef PNGTEST_TIMING - t_stop = (float)clock(); - t_misc += (t_stop - t_start); - t_start = t_stop; - fprintf(STDERR, " CPU time used = %.3f seconds", - (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC); - fprintf(STDERR, " (decoding %.3f,\n", - t_decode/(float)CLOCKS_PER_SEC); - fprintf(STDERR, " encoding %.3f ,", - t_encode/(float)CLOCKS_PER_SEC); - fprintf(STDERR, " other %.3f seconds)\n\n", - t_misc/(float)CLOCKS_PER_SEC); -#endif - - if (ierror == 0) - fprintf(STDERR, " libpng passes test\n"); - else - fprintf(STDERR, " libpng FAILS test\n"); - return (int)(ierror != 0); -} - -/* Generate a compiler error if there is an old png.h in the search path. */ -typedef version_1_2_44 your_png_h_is_not_version_1_2_44; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtrans.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtrans.c deleted file mode 100644 index 6ad9dcf..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngtrans.c +++ /dev/null @@ -1,699 +0,0 @@ - -/* pngtrans.c - transforms the data in a row (used by both readers and writers) - * - * Last changed in libpng 1.2.41 [December 3, 2009] - * Copyright (c) 1998-2009 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* Turn on BGR-to-RGB mapping */ -void PNGAPI -png_set_bgr(png_structp png_ptr) -{ - png_debug(1, "in png_set_bgr"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_BGR; -} -#endif - -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Turn on 16 bit byte swapping */ -void PNGAPI -png_set_swap(png_structp png_ptr) -{ - png_debug(1, "in png_set_swap"); - - if (png_ptr == NULL) - return; - if (png_ptr->bit_depth == 16) - png_ptr->transformations |= PNG_SWAP_BYTES; -} -#endif - -#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) -/* Turn on pixel packing */ -void PNGAPI -png_set_packing(png_structp png_ptr) -{ - png_debug(1, "in png_set_packing"); - - if (png_ptr == NULL) - return; - if (png_ptr->bit_depth < 8) - { - png_ptr->transformations |= PNG_PACK; - png_ptr->usr_bit_depth = 8; - } -} -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED) -/* Turn on packed pixel swapping */ -void PNGAPI -png_set_packswap(png_structp png_ptr) -{ - png_debug(1, "in png_set_packswap"); - - if (png_ptr == NULL) - return; - if (png_ptr->bit_depth < 8) - png_ptr->transformations |= PNG_PACKSWAP; -} -#endif - -#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) -void PNGAPI -png_set_shift(png_structp png_ptr, png_color_8p true_bits) -{ - png_debug(1, "in png_set_shift"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_SHIFT; - png_ptr->shift = *true_bits; -} -#endif - -#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ - defined(PNG_WRITE_INTERLACING_SUPPORTED) -int PNGAPI -png_set_interlace_handling(png_structp png_ptr) -{ - png_debug(1, "in png_set_interlace handling"); - - if (png_ptr && png_ptr->interlaced) - { - png_ptr->transformations |= PNG_INTERLACE; - return (7); - } - - return (1); -} -#endif - -#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) -/* Add a filler byte on read, or remove a filler or alpha byte on write. - * The filler type has changed in v0.95 to allow future 2-byte fillers - * for 48-bit input data, as well as to avoid problems with some compilers - * that don't like bytes as parameters. - */ -void PNGAPI -png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc) -{ - png_debug(1, "in png_set_filler"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_FILLER; -#ifdef PNG_LEGACY_SUPPORTED - png_ptr->filler = (png_byte)filler; -#else - png_ptr->filler = (png_uint_16)filler; -#endif - if (filler_loc == PNG_FILLER_AFTER) - png_ptr->flags |= PNG_FLAG_FILLER_AFTER; - else - png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER; - - /* This should probably go in the "do_read_filler" routine. - * I attempted to do that in libpng-1.0.1a but that caused problems - * so I restored it in libpng-1.0.2a - */ - - if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - png_ptr->usr_channels = 4; - } - - /* Also I added this in libpng-1.0.2a (what happens when we expand - * a less-than-8-bit grayscale to GA? */ - - if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY && png_ptr->bit_depth >= 8) - { - png_ptr->usr_channels = 2; - } -} - -#ifndef PNG_1_0_X -/* Added to libpng-1.2.7 */ -void PNGAPI -png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc) -{ - png_debug(1, "in png_set_add_alpha"); - - if (png_ptr == NULL) - return; - png_set_filler(png_ptr, filler, filler_loc); - png_ptr->transformations |= PNG_ADD_ALPHA; -} -#endif - -#endif - -#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) -void PNGAPI -png_set_swap_alpha(png_structp png_ptr) -{ - png_debug(1, "in png_set_swap_alpha"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_SWAP_ALPHA; -} -#endif - -#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) -void PNGAPI -png_set_invert_alpha(png_structp png_ptr) -{ - png_debug(1, "in png_set_invert_alpha"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_INVERT_ALPHA; -} -#endif - -#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -void PNGAPI -png_set_invert_mono(png_structp png_ptr) -{ - png_debug(1, "in png_set_invert_mono"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_INVERT_MONO; -} - -/* Invert monochrome grayscale data */ -void /* PRIVATE */ -png_do_invert(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_invert"); - - /* This test removed from libpng version 1.0.13 and 1.2.0: - * if (row_info->bit_depth == 1 && - */ -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row == NULL || row_info == NULL) - return; -#endif - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - png_bytep rp = row; - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(~(*rp)); - rp++; - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - row_info->bit_depth == 8) - { - png_bytep rp = row; - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - - for (i = 0; i < istop; i+=2) - { - *rp = (png_byte)(~(*rp)); - rp+=2; - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - row_info->bit_depth == 16) - { - png_bytep rp = row; - png_uint_32 i; - png_uint_32 istop = row_info->rowbytes; - - for (i = 0; i < istop; i+=4) - { - *rp = (png_byte)(~(*rp)); - *(rp+1) = (png_byte)(~(*(rp+1))); - rp+=4; - } - } -} -#endif - -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Swaps byte order on 16 bit depth images */ -void /* PRIVATE */ -png_do_swap(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_swap"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - row_info->bit_depth == 16) - { - png_bytep rp = row; - png_uint_32 i; - png_uint_32 istop= row_info->width * row_info->channels; - - for (i = 0; i < istop; i++, rp += 2) - { - png_byte t = *rp; - *rp = *(rp + 1); - *(rp + 1) = t; - } - } -} -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED) -static PNG_CONST png_byte onebppswaptable[256] = { - 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, - 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, - 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, - 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, - 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, - 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, - 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, - 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, - 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, - 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, - 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, - 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, - 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, - 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, - 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, - 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, - 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, - 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, - 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, - 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, - 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, - 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, - 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, - 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, - 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, - 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, - 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, - 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, - 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, - 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, - 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, - 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF -}; - -static PNG_CONST png_byte twobppswaptable[256] = { - 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0, - 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0, - 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4, - 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4, - 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8, - 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8, - 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC, - 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC, - 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1, - 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1, - 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5, - 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5, - 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9, - 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9, - 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD, - 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD, - 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2, - 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2, - 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6, - 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6, - 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA, - 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA, - 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE, - 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE, - 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3, - 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3, - 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7, - 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7, - 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB, - 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB, - 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF, - 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF -}; - -static PNG_CONST png_byte fourbppswaptable[256] = { - 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, - 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0, - 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71, - 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1, - 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72, - 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2, - 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73, - 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3, - 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74, - 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4, - 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75, - 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5, - 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76, - 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6, - 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77, - 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7, - 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78, - 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8, - 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79, - 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9, - 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A, - 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA, - 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B, - 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB, - 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C, - 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC, - 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D, - 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD, - 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E, - 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE, - 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F, - 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF -}; - -/* Swaps pixel packing order within bytes */ -void /* PRIVATE */ -png_do_packswap(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_packswap"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - row_info->bit_depth < 8) - { - png_bytep rp, end, table; - - end = row + row_info->rowbytes; - - if (row_info->bit_depth == 1) - table = (png_bytep)onebppswaptable; - else if (row_info->bit_depth == 2) - table = (png_bytep)twobppswaptable; - else if (row_info->bit_depth == 4) - table = (png_bytep)fourbppswaptable; - else - return; - - for (rp = row; rp < end; rp++) - *rp = table[*rp]; - } -} -#endif /* PNG_READ_PACKSWAP_SUPPORTED or PNG_WRITE_PACKSWAP_SUPPORTED */ - -#if defined(PNG_WRITE_FILLER_SUPPORTED) || \ - defined(PNG_READ_STRIP_ALPHA_SUPPORTED) -/* Remove filler or alpha byte(s) */ -void /* PRIVATE */ -png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) -{ - png_debug(1, "in png_do_strip_filler"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - png_bytep sp=row; - png_bytep dp=row; - png_uint_32 row_width=row_info->width; - png_uint_32 i; - - if ((row_info->color_type == PNG_COLOR_TYPE_RGB || - (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && - (flags & PNG_FLAG_STRIP_ALPHA))) && - row_info->channels == 4) - { - if (row_info->bit_depth == 8) - { - /* This converts from RGBX or RGBA to RGB */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - dp+=3; sp+=4; - for (i = 1; i < row_width; i++) - { - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - sp++; - } - } - /* This converts from XRGB or ARGB to RGB */ - else - { - for (i = 0; i < row_width; i++) - { - sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - } - } - row_info->pixel_depth = 24; - row_info->rowbytes = row_width * 3; - } - else /* if (row_info->bit_depth == 16) */ - { - if (flags & PNG_FLAG_FILLER_AFTER) - { - /* This converts from RRGGBBXX or RRGGBBAA to RRGGBB */ - sp += 8; dp += 6; - for (i = 1; i < row_width; i++) - { - /* This could be (although png_memcpy is probably slower): - png_memcpy(dp, sp, 6); - sp += 8; - dp += 6; - */ - - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - sp += 2; - } - } - else - { - /* This converts from XXRRGGBB or AARRGGBB to RRGGBB */ - for (i = 0; i < row_width; i++) - { - /* This could be (although png_memcpy is probably slower): - png_memcpy(dp, sp, 6); - sp += 8; - dp += 6; - */ - - sp+=2; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - *dp++ = *sp++; - } - } - row_info->pixel_depth = 48; - row_info->rowbytes = row_width * 6; - } - row_info->channels = 3; - } - else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY || - (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - (flags & PNG_FLAG_STRIP_ALPHA))) && - row_info->channels == 2) - { - if (row_info->bit_depth == 8) - { - /* This converts from GX or GA to G */ - if (flags & PNG_FLAG_FILLER_AFTER) - { - for (i = 0; i < row_width; i++) - { - *dp++ = *sp++; - sp++; - } - } - /* This converts from XG or AG to G */ - else - { - for (i = 0; i < row_width; i++) - { - sp++; - *dp++ = *sp++; - } - } - row_info->pixel_depth = 8; - row_info->rowbytes = row_width; - } - else /* if (row_info->bit_depth == 16) */ - { - if (flags & PNG_FLAG_FILLER_AFTER) - { - /* This converts from GGXX or GGAA to GG */ - sp += 4; dp += 2; - for (i = 1; i < row_width; i++) - { - *dp++ = *sp++; - *dp++ = *sp++; - sp += 2; - } - } - else - { - /* This converts from XXGG or AAGG to GG */ - for (i = 0; i < row_width; i++) - { - sp += 2; - *dp++ = *sp++; - *dp++ = *sp++; - } - } - row_info->pixel_depth = 16; - row_info->rowbytes = row_width * 2; - } - row_info->channels = 1; - } - if (flags & PNG_FLAG_STRIP_ALPHA) - row_info->color_type &= ~PNG_COLOR_MASK_ALPHA; - } -} -#endif - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* Swaps red and blue bytes within a pixel */ -void /* PRIVATE */ -png_do_bgr(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_bgr"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - (row_info->color_type & PNG_COLOR_MASK_COLOR)) - { - png_uint_32 row_width = row_info->width; - if (row_info->bit_depth == 8) - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 3) - { - png_byte save = *rp; - *rp = *(rp + 2); - *(rp + 2) = save; - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 4) - { - png_byte save = *rp; - *rp = *(rp + 2); - *(rp + 2) = save; - } - } - } - else if (row_info->bit_depth == 16) - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 6) - { - png_byte save = *rp; - *rp = *(rp + 4); - *(rp + 4) = save; - save = *(rp + 1); - *(rp + 1) = *(rp + 5); - *(rp + 5) = save; - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 8) - { - png_byte save = *rp; - *rp = *(rp + 4); - *(rp + 4) = save; - save = *(rp + 1); - *(rp + 1) = *(rp + 5); - *(rp + 5) = save; - } - } - } - } -} -#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */ - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_LEGACY_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -void PNGAPI -png_set_user_transform_info(png_structp png_ptr, png_voidp - user_transform_ptr, int user_transform_depth, int user_transform_channels) -{ - png_debug(1, "in png_set_user_transform_info"); - - if (png_ptr == NULL) - return; -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED - png_ptr->user_transform_ptr = user_transform_ptr; - png_ptr->user_transform_depth = (png_byte)user_transform_depth; - png_ptr->user_transform_channels = (png_byte)user_transform_channels; -#else - if (user_transform_ptr || user_transform_depth || user_transform_channels) - png_warning(png_ptr, - "This version of libpng does not support user transform info"); -#endif -} -#endif - -/* This function returns a pointer to the user_transform_ptr associated with - * the user transform functions. The application should free any memory - * associated with this pointer before png_write_destroy and png_read_destroy - * are called. - */ -png_voidp PNGAPI -png_get_user_transform_ptr(png_structp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED - return ((png_voidp)png_ptr->user_transform_ptr); -#else - return (NULL); -#endif -} -#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngvcrd.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngvcrd.c deleted file mode 100644 index ce4233e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngvcrd.c +++ /dev/null @@ -1 +0,0 @@ -/* pnggvrd.c was removed from libpng-1.2.20. */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwio.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwio.c deleted file mode 100644 index 44e5ea9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwio.c +++ /dev/null @@ -1,260 +0,0 @@ - -/* pngwio.c - functions for data output - * - * Last changed in libpng 1.2.41 [December 3, 2009] - * Copyright (c) 1998-2009 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all output. Users who need - * special handling are expected to write functions that have the same - * arguments as these and perform similar functions, but that possibly - * use different output methods. Note that you shouldn't change these - * functions, but rather write replacement functions and then change - * them at run time with png_set_write_fn(...). - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_WRITE_SUPPORTED - -/* Write the data to whatever output you are using. The default routine - * writes to a file pointer. Note that this routine sometimes gets called - * with very small lengths, so you should implement some kind of simple - * buffering if you are using unbuffered writes. This should never be asked - * to write more than 64K on a 16 bit machine. - */ - -void /* PRIVATE */ -png_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - if (png_ptr->write_data_fn != NULL ) - (*(png_ptr->write_data_fn))(png_ptr, data, length); - else - png_error(png_ptr, "Call to NULL write function"); -} - -#ifdef PNG_STDIO_SUPPORTED -/* This is the function that does the actual writing of data. If you are - * not writing to a standard C stream, you should create a replacement - * write_data function and use it at run time with png_set_write_fn(), rather - * than changing the library. - */ -#ifndef USE_FAR_KEYWORD -void PNGAPI -png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_uint_32 check; - - if (png_ptr == NULL) - return; -#ifdef _WIN32_WCE - if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) ) - check = 0; -#else - check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr)); -#endif - if (check != length) - png_error(png_ptr, "Write Error"); -} -#else -/* This is the model-independent version. Since the standard I/O library - * can't handle far buffers in the medium and small models, we have to copy - * the data. - */ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -void PNGAPI -png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_uint_32 check; - png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ - png_FILE_p io_ptr; - - if (png_ptr == NULL) - return; - /* Check if data really is near. If so, use usual code. */ - near_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); - if ((png_bytep)near_data == data) - { -#ifdef _WIN32_WCE - if ( !WriteFile(io_ptr, near_data, length, &check, NULL) ) - check = 0; -#else - check = fwrite(near_data, 1, length, io_ptr); -#endif - } - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t written, remaining, err; - check = 0; - remaining = length; - do - { - written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ -#ifdef _WIN32_WCE - if ( !WriteFile(io_ptr, buf, written, &err, NULL) ) - err = 0; -#else - err = fwrite(buf, 1, written, io_ptr); -#endif - if (err != written) - break; - - else - check += err; - - data += written; - remaining -= written; - } - while (remaining != 0); - } - if (check != length) - png_error(png_ptr, "Write Error"); -} - -#endif -#endif - -/* This function is called to output any data pending writing (normally - * to disk). After png_flush is called, there should be no data pending - * writing in any buffers. - */ -#ifdef PNG_WRITE_FLUSH_SUPPORTED -void /* PRIVATE */ -png_flush(png_structp png_ptr) -{ - if (png_ptr->output_flush_fn != NULL) - (*(png_ptr->output_flush_fn))(png_ptr); -} - -#ifdef PNG_STDIO_SUPPORTED -void PNGAPI -png_default_flush(png_structp png_ptr) -{ -#ifndef _WIN32_WCE - png_FILE_p io_ptr; -#endif - if (png_ptr == NULL) - return; -#ifndef _WIN32_WCE - io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr)); - fflush(io_ptr); -#endif -} -#endif -#endif - -/* This function allows the application to supply new output functions for - * libpng if standard C streams aren't being used. - * - * This function takes as its arguments: - * png_ptr - pointer to a png output data structure - * io_ptr - pointer to user supplied structure containing info about - * the output functions. May be NULL. - * write_data_fn - pointer to a new output function that takes as its - * arguments a pointer to a png_struct, a pointer to - * data to be written, and a 32-bit unsigned int that is - * the number of bytes to be written. The new write - * function should call png_error(png_ptr, "Error msg") - * to exit and output any fatal error messages. May be - * NULL, in which case libpng's default function will - * be used. - * flush_data_fn - pointer to a new flush function that takes as its - * arguments a pointer to a png_struct. After a call to - * the flush function, there should be no data in any buffers - * or pending transmission. If the output method doesn't do - * any buffering of output, a function prototype must still be - * supplied although it doesn't have to do anything. If - * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile - * time, output_flush_fn will be ignored, although it must be - * supplied for compatibility. May be NULL, in which case - * libpng's default function will be used, if - * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not - * a good idea if io_ptr does not point to a standard - * *FILE structure. - */ -void PNGAPI -png_set_write_fn(png_structp png_ptr, png_voidp io_ptr, - png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->io_ptr = io_ptr; - -#ifdef PNG_STDIO_SUPPORTED - if (write_data_fn != NULL) - png_ptr->write_data_fn = write_data_fn; - - else - png_ptr->write_data_fn = png_default_write_data; -#else - png_ptr->write_data_fn = write_data_fn; -#endif - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -#ifdef PNG_STDIO_SUPPORTED - if (output_flush_fn != NULL) - png_ptr->output_flush_fn = output_flush_fn; - - else - png_ptr->output_flush_fn = png_default_flush; -#else - png_ptr->output_flush_fn = output_flush_fn; -#endif -#endif /* PNG_WRITE_FLUSH_SUPPORTED */ - - /* It is an error to read while writing a png file */ - if (png_ptr->read_data_fn != NULL) - { - png_ptr->read_data_fn = NULL; - png_warning(png_ptr, - "Attempted to set both read_data_fn and write_data_fn in"); - png_warning(png_ptr, - "the same structure. Resetting read_data_fn to NULL."); - } -} - -#ifdef USE_FAR_KEYWORD -#ifdef _MSC_VER -void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check) -{ - void *near_ptr; - void FAR *far_ptr; - FP_OFF(near_ptr) = FP_OFF(ptr); - far_ptr = (void FAR *)near_ptr; - - if (check != 0) - if (FP_SEG(ptr) != FP_SEG(far_ptr)) - png_error(png_ptr, "segment lost in conversion"); - - return(near_ptr); -} -# else -void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check) -{ - void *near_ptr; - void FAR *far_ptr; - near_ptr = (void FAR *)ptr; - far_ptr = (void FAR *)near_ptr; - - if (check != 0) - if (far_ptr != ptr) - png_error(png_ptr, "segment lost in conversion"); - - return(near_ptr); -} -# endif -# endif -#endif /* PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwrite.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwrite.c deleted file mode 100644 index e411e81..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwrite.c +++ /dev/null @@ -1,1592 +0,0 @@ - -/* pngwrite.c - general routines to write a PNG file - * - * Last changed in libpng 1.2.42 [January 3, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -/* Get internal access to png.h */ -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_WRITE_SUPPORTED - -/* Writes all the PNG information. This is the suggested way to use the - * library. If you have a new chunk to add, make a function to write it, - * and put it in the correct location here. If you want the chunk written - * after the image data, put it in png_write_end(). I strongly encourage - * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing - * the chunk, as that will keep the code from breaking if you want to just - * write a plain PNG file. If you have long comments, I suggest writing - * them in png_write_end(), and compressing them. - */ -void PNGAPI -png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_write_info_before_PLTE"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE)) - { - /* Write PNG signature */ - png_write_sig(png_ptr); -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \ - (png_ptr->mng_features_permitted)) - { - png_warning(png_ptr, "MNG features are not allowed in a PNG datastream"); - png_ptr->mng_features_permitted = 0; - } -#endif - /* Write IHDR information. */ - png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type, - info_ptr->filter_type, -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - info_ptr->interlace_type); -#else - 0); -#endif - /* The rest of these check to see if the valid field has the appropriate - * flag set, and if it does, writes the chunk. - */ -#ifdef PNG_WRITE_gAMA_SUPPORTED - if (info_ptr->valid & PNG_INFO_gAMA) - { -# ifdef PNG_FLOATING_POINT_SUPPORTED - png_write_gAMA(png_ptr, info_ptr->gamma); -#else -#ifdef PNG_FIXED_POINT_SUPPORTED - png_write_gAMA_fixed(png_ptr, info_ptr->int_gamma); -# endif -#endif - } -#endif -#ifdef PNG_WRITE_sRGB_SUPPORTED - if (info_ptr->valid & PNG_INFO_sRGB) - png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent); -#endif -#ifdef PNG_WRITE_iCCP_SUPPORTED - if (info_ptr->valid & PNG_INFO_iCCP) - png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE, - info_ptr->iccp_profile, (int)info_ptr->iccp_proflen); -#endif -#ifdef PNG_WRITE_sBIT_SUPPORTED - if (info_ptr->valid & PNG_INFO_sBIT) - png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type); -#endif -#ifdef PNG_WRITE_cHRM_SUPPORTED - if (info_ptr->valid & PNG_INFO_cHRM) - { -#ifdef PNG_FLOATING_POINT_SUPPORTED - png_write_cHRM(png_ptr, - info_ptr->x_white, info_ptr->y_white, - info_ptr->x_red, info_ptr->y_red, - info_ptr->x_green, info_ptr->y_green, - info_ptr->x_blue, info_ptr->y_blue); -#else -# ifdef PNG_FIXED_POINT_SUPPORTED - png_write_cHRM_fixed(png_ptr, - info_ptr->int_x_white, info_ptr->int_y_white, - info_ptr->int_x_red, info_ptr->int_y_red, - info_ptr->int_x_green, info_ptr->int_y_green, - info_ptr->int_x_blue, info_ptr->int_y_blue); -# endif -#endif - } -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - if (info_ptr->unknown_chunks_num) - { - png_unknown_chunk *up; - - png_debug(5, "writing extra chunks"); - - for (up = info_ptr->unknown_chunks; - up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num; - up++) - { - int keep = png_handle_as_unknown(png_ptr, up->name); - if (keep != PNG_HANDLE_CHUNK_NEVER && - up->location && !(up->location & PNG_HAVE_PLTE) && - !(up->location & PNG_HAVE_IDAT) && - ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS || - (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS))) - { - if (up->size == 0) - png_warning(png_ptr, "Writing zero-length unknown chunk"); - png_write_chunk(png_ptr, up->name, up->data, up->size); - } - } - } -#endif - png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE; - } -} - -void PNGAPI -png_write_info(png_structp png_ptr, png_infop info_ptr) -{ -#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) - int i; -#endif - - png_debug(1, "in png_write_info"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_write_info_before_PLTE(png_ptr, info_ptr); - - if (info_ptr->valid & PNG_INFO_PLTE) - png_write_PLTE(png_ptr, info_ptr->palette, - (png_uint_32)info_ptr->num_palette); - else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_error(png_ptr, "Valid palette required for paletted images"); - -#ifdef PNG_WRITE_tRNS_SUPPORTED - if (info_ptr->valid & PNG_INFO_tRNS) - { -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel (in tRNS) */ - if ((png_ptr->transformations & PNG_INVERT_ALPHA) && - info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - int j; - for (j = 0; j<(int)info_ptr->num_trans; j++) - info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]); - } -#endif - png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values), - info_ptr->num_trans, info_ptr->color_type); - } -#endif -#ifdef PNG_WRITE_bKGD_SUPPORTED - if (info_ptr->valid & PNG_INFO_bKGD) - png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type); -#endif -#ifdef PNG_WRITE_hIST_SUPPORTED - if (info_ptr->valid & PNG_INFO_hIST) - png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette); -#endif -#ifdef PNG_WRITE_oFFs_SUPPORTED - if (info_ptr->valid & PNG_INFO_oFFs) - png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset, - info_ptr->offset_unit_type); -#endif -#ifdef PNG_WRITE_pCAL_SUPPORTED - if (info_ptr->valid & PNG_INFO_pCAL) - png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0, - info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams, - info_ptr->pcal_units, info_ptr->pcal_params); -#endif - -#ifdef PNG_sCAL_SUPPORTED - if (info_ptr->valid & PNG_INFO_sCAL) -#ifdef PNG_WRITE_sCAL_SUPPORTED -#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED) - png_write_sCAL(png_ptr, (int)info_ptr->scal_unit, - info_ptr->scal_pixel_width, info_ptr->scal_pixel_height); -#else /* !FLOATING_POINT */ -#ifdef PNG_FIXED_POINT_SUPPORTED - png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit, - info_ptr->scal_s_width, info_ptr->scal_s_height); -#endif /* FIXED_POINT */ -#endif /* FLOATING_POINT */ -#else /* !WRITE_sCAL */ - png_warning(png_ptr, - "png_write_sCAL not supported; sCAL chunk not written."); -#endif /* WRITE_sCAL */ -#endif /* sCAL */ - -#ifdef PNG_WRITE_pHYs_SUPPORTED - if (info_ptr->valid & PNG_INFO_pHYs) - png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit, - info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type); -#endif /* pHYs */ - -#ifdef PNG_WRITE_tIME_SUPPORTED - if (info_ptr->valid & PNG_INFO_tIME) - { - png_write_tIME(png_ptr, &(info_ptr->mod_time)); - png_ptr->mode |= PNG_WROTE_tIME; - } -#endif /* tIME */ - -#ifdef PNG_WRITE_sPLT_SUPPORTED - if (info_ptr->valid & PNG_INFO_sPLT) - for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) - png_write_sPLT(png_ptr, info_ptr->splt_palettes + i); -#endif /* sPLT */ - -#ifdef PNG_WRITE_TEXT_SUPPORTED - /* Check to see if we need to write text chunks */ - for (i = 0; i < info_ptr->num_text; i++) - { - png_debug2(2, "Writing header text chunk %d, type %d", i, - info_ptr->text[i].compression); - /* An internationalized chunk? */ - if (info_ptr->text[i].compression > 0) - { -#ifdef PNG_WRITE_iTXt_SUPPORTED - /* Write international chunk */ - png_write_iTXt(png_ptr, - info_ptr->text[i].compression, - info_ptr->text[i].key, - info_ptr->text[i].lang, - info_ptr->text[i].lang_key, - info_ptr->text[i].text); -#else - png_warning(png_ptr, "Unable to write international text"); -#endif - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; - } - /* If we want a compressed text chunk */ - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt) - { -#ifdef PNG_WRITE_zTXt_SUPPORTED - /* Write compressed chunk */ - png_write_zTXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, 0, - info_ptr->text[i].compression); -#else - png_warning(png_ptr, "Unable to write compressed text"); -#endif - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; - } - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - { -#ifdef PNG_WRITE_tEXt_SUPPORTED - /* Write uncompressed chunk */ - png_write_tEXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, - 0); - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; -#else - /* Can't get here */ - png_warning(png_ptr, "Unable to write uncompressed text"); -#endif - } - } -#endif /* tEXt */ - -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - if (info_ptr->unknown_chunks_num) - { - png_unknown_chunk *up; - - png_debug(5, "writing extra chunks"); - - for (up = info_ptr->unknown_chunks; - up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num; - up++) - { - int keep = png_handle_as_unknown(png_ptr, up->name); - if (keep != PNG_HANDLE_CHUNK_NEVER && - up->location && (up->location & PNG_HAVE_PLTE) && - !(up->location & PNG_HAVE_IDAT) && - ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS || - (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS))) - { - png_write_chunk(png_ptr, up->name, up->data, up->size); - } - } - } -#endif -} - -/* Writes the end of the PNG file. If you don't want to write comments or - * time information, you can pass NULL for info. If you already wrote these - * in png_write_info(), do not write them again here. If you have long - * comments, I suggest writing them here, and compressing them. - */ -void PNGAPI -png_write_end(png_structp png_ptr, png_infop info_ptr) -{ - png_debug(1, "in png_write_end"); - - if (png_ptr == NULL) - return; - if (!(png_ptr->mode & PNG_HAVE_IDAT)) - png_error(png_ptr, "No IDATs written into file"); - - /* See if user wants us to write information chunks */ - if (info_ptr != NULL) - { -#ifdef PNG_WRITE_TEXT_SUPPORTED - int i; /* local index variable */ -#endif -#ifdef PNG_WRITE_tIME_SUPPORTED - /* Check to see if user has supplied a time chunk */ - if ((info_ptr->valid & PNG_INFO_tIME) && - !(png_ptr->mode & PNG_WROTE_tIME)) - png_write_tIME(png_ptr, &(info_ptr->mod_time)); -#endif -#ifdef PNG_WRITE_TEXT_SUPPORTED - /* Loop through comment chunks */ - for (i = 0; i < info_ptr->num_text; i++) - { - png_debug2(2, "Writing trailer text chunk %d, type %d", i, - info_ptr->text[i].compression); - /* An internationalized chunk? */ - if (info_ptr->text[i].compression > 0) - { -#ifdef PNG_WRITE_iTXt_SUPPORTED - /* Write international chunk */ - png_write_iTXt(png_ptr, - info_ptr->text[i].compression, - info_ptr->text[i].key, - info_ptr->text[i].lang, - info_ptr->text[i].lang_key, - info_ptr->text[i].text); -#else - png_warning(png_ptr, "Unable to write international text"); -#endif - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; - } - else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt) - { -#ifdef PNG_WRITE_zTXt_SUPPORTED - /* Write compressed chunk */ - png_write_zTXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, 0, - info_ptr->text[i].compression); -#else - png_warning(png_ptr, "Unable to write compressed text"); -#endif - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; - } - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - { -#ifdef PNG_WRITE_tEXt_SUPPORTED - /* Write uncompressed chunk */ - png_write_tEXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, 0); -#else - png_warning(png_ptr, "Unable to write uncompressed text"); -#endif - - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; - } - } -#endif -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - if (info_ptr->unknown_chunks_num) - { - png_unknown_chunk *up; - - png_debug(5, "writing extra chunks"); - - for (up = info_ptr->unknown_chunks; - up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num; - up++) - { - int keep = png_handle_as_unknown(png_ptr, up->name); - if (keep != PNG_HANDLE_CHUNK_NEVER && - up->location && (up->location & PNG_AFTER_IDAT) && - ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS || - (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS))) - { - png_write_chunk(png_ptr, up->name, up->data, up->size); - } - } - } -#endif - } - - png_ptr->mode |= PNG_AFTER_IDAT; - - /* Write end of PNG file */ - png_write_IEND(png_ptr); - /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03, - * and restored again in libpng-1.2.30, may cause some applications that - * do not set png_ptr->output_flush_fn to crash. If your application - * experiences a problem, please try building libpng with - * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to - * png-mng-implement at lists.sf.net . - */ -#ifdef PNG_WRITE_FLUSH_SUPPORTED -# ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED - png_flush(png_ptr); -# endif -#endif -} - -#ifdef PNG_CONVERT_tIME_SUPPORTED -/* "tm" structure is not supported on WindowsCE */ -void PNGAPI -png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime) -{ - png_debug(1, "in png_convert_from_struct_tm"); - - ptime->year = (png_uint_16)(1900 + ttime->tm_year); - ptime->month = (png_byte)(ttime->tm_mon + 1); - ptime->day = (png_byte)ttime->tm_mday; - ptime->hour = (png_byte)ttime->tm_hour; - ptime->minute = (png_byte)ttime->tm_min; - ptime->second = (png_byte)ttime->tm_sec; -} - -void PNGAPI -png_convert_from_time_t(png_timep ptime, time_t ttime) -{ - struct tm *tbuf; - - png_debug(1, "in png_convert_from_time_t"); - - tbuf = gmtime(&ttime); - png_convert_from_struct_tm(ptime, tbuf); -} -#endif - -/* Initialize png_ptr structure, and allocate any memory needed */ -png_structp PNGAPI -png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn) -{ -#ifdef PNG_USER_MEM_SUPPORTED - return (png_create_write_struct_2(user_png_ver, error_ptr, error_fn, - warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL)); -} - -/* Alternate initialize png_ptr structure, and allocate any memory needed */ -png_structp PNGAPI -png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn) -{ -#endif /* PNG_USER_MEM_SUPPORTED */ -#ifdef PNG_SETJMP_SUPPORTED - volatile -#endif - png_structp png_ptr; -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - jmp_buf jmpbuf; -#endif -#endif - int i; - - png_debug(1, "in png_create_write_struct"); - -#ifdef PNG_USER_MEM_SUPPORTED - png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG, - (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr); -#else - png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG); -#endif /* PNG_USER_MEM_SUPPORTED */ - if (png_ptr == NULL) - return (NULL); - - /* Added at libpng-1.2.6 */ -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - png_ptr->user_width_max = PNG_USER_WIDTH_MAX; - png_ptr->user_height_max = PNG_USER_HEIGHT_MAX; -#endif - -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) -#else - if (setjmp(png_ptr->jmpbuf)) -#endif - { - png_free(png_ptr, png_ptr->zbuf); - png_ptr->zbuf = NULL; -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)png_ptr, - (png_free_ptr)free_fn, (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)png_ptr); -#endif - return (NULL); - } -#ifdef USE_FAR_KEYWORD - png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf)); -#endif -#endif - -#ifdef PNG_USER_MEM_SUPPORTED - png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn); -#endif /* PNG_USER_MEM_SUPPORTED */ - png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn); - - if (user_png_ver) - { - i = 0; - do - { - if (user_png_ver[i] != png_libpng_ver[i]) - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - } while (png_libpng_ver[i++]); - } - - if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH) - { - /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so - * we must recompile any applications that use any older library version. - * For versions after libpng 1.0, we will be compatible, so we need - * only check the first digit. - */ - if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] || - (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) || - (user_png_ver[0] == '0' && user_png_ver[2] < '9')) - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char msg[80]; - if (user_png_ver) - { - png_snprintf(msg, 80, - "Application was compiled with png.h from libpng-%.20s", - user_png_ver); - png_warning(png_ptr, msg); - } - png_snprintf(msg, 80, - "Application is running with png.c from libpng-%.20s", - png_libpng_ver); - png_warning(png_ptr, msg); -#endif -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "Incompatible libpng version in application and library"); - } - } - - /* Initialize zbuf - compression buffer */ - png_ptr->zbuf_size = PNG_ZBUF_SIZE; - png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); - - png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL, - png_flush_ptr_NULL); - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT, - 1, png_doublep_NULL, png_doublep_NULL); -#endif - -#ifdef PNG_SETJMP_SUPPORTED - /* Applications that neglect to set up their own setjmp() and then - * encounter a png_error() will longjmp here. Since the jmpbuf is - * then meaningless we abort instead of returning. - */ -#ifdef USE_FAR_KEYWORD - if (setjmp(jmpbuf)) - PNG_ABORT(); - png_memcpy(png_ptr->jmpbuf, jmpbuf, png_sizeof(jmp_buf)); -#else - if (setjmp(png_ptr->jmpbuf)) - PNG_ABORT(); -#endif -#endif - return (png_ptr); -} - -/* Initialize png_ptr structure, and allocate any memory needed */ -#if defined(PNG_1_0_X) || defined(PNG_1_2_X) -/* Deprecated. */ -#undef png_write_init -void PNGAPI -png_write_init(png_structp png_ptr) -{ - /* We only come here via pre-1.0.7-compiled applications */ - png_write_init_2(png_ptr, "1.0.6 or earlier", 0, 0); -} - -void PNGAPI -png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver, - png_size_t png_struct_size, png_size_t png_info_size) -{ - /* We only come here via pre-1.0.12-compiled applications */ - if (png_ptr == NULL) return; -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - if (png_sizeof(png_struct) > png_struct_size || - png_sizeof(png_info) > png_info_size) - { - char msg[80]; - png_ptr->warning_fn = NULL; - if (user_png_ver) - { - png_snprintf(msg, 80, - "Application was compiled with png.h from libpng-%.20s", - user_png_ver); - png_warning(png_ptr, msg); - } - png_snprintf(msg, 80, - "Application is running with png.c from libpng-%.20s", - png_libpng_ver); - png_warning(png_ptr, msg); - } -#endif - if (png_sizeof(png_struct) > png_struct_size) - { - png_ptr->error_fn = NULL; -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "The png struct allocated by the application for writing is" - " too small."); - } - if (png_sizeof(png_info) > png_info_size) - { - png_ptr->error_fn = NULL; -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - png_error(png_ptr, - "The info struct allocated by the application for writing is" - " too small."); - } - png_write_init_3(&png_ptr, user_png_ver, png_struct_size); -} -#endif /* PNG_1_0_X || PNG_1_2_X */ - - -void PNGAPI -png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver, - png_size_t png_struct_size) -{ - png_structp png_ptr = *ptr_ptr; -#ifdef PNG_SETJMP_SUPPORTED - jmp_buf tmp_jmp; /* to save current jump buffer */ -#endif - - int i = 0; - - if (png_ptr == NULL) - return; - - do - { - if (user_png_ver[i] != png_libpng_ver[i]) - { -#ifdef PNG_LEGACY_SUPPORTED - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; -#else - png_ptr->warning_fn = NULL; - png_warning(png_ptr, - "Application uses deprecated png_write_init() and should be recompiled."); -#endif - } - } while (png_libpng_ver[i++]); - - png_debug(1, "in png_write_init_3"); - -#ifdef PNG_SETJMP_SUPPORTED - /* Save jump buffer and error functions */ - png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); -#endif - - if (png_sizeof(png_struct) > png_struct_size) - { - png_destroy_struct(png_ptr); - png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG); - *ptr_ptr = png_ptr; - } - - /* Reset all variables to 0 */ - png_memset(png_ptr, 0, png_sizeof(png_struct)); - - /* Added at libpng-1.2.6 */ -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - png_ptr->user_width_max = PNG_USER_WIDTH_MAX; - png_ptr->user_height_max = PNG_USER_HEIGHT_MAX; -#endif - -#ifdef PNG_SETJMP_SUPPORTED - /* Restore jump buffer */ - png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); -#endif - - png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL, - png_flush_ptr_NULL); - - /* Initialize zbuf - compression buffer */ - png_ptr->zbuf_size = PNG_ZBUF_SIZE; - png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT, - 1, png_doublep_NULL, png_doublep_NULL); -#endif -} - -/* Write a few rows of image data. If the image is interlaced, - * either you will have to write the 7 sub images, or, if you - * have called png_set_interlace_handling(), you will have to - * "write" the image seven times. - */ -void PNGAPI -png_write_rows(png_structp png_ptr, png_bytepp row, - png_uint_32 num_rows) -{ - png_uint_32 i; /* row counter */ - png_bytepp rp; /* row pointer */ - - png_debug(1, "in png_write_rows"); - - if (png_ptr == NULL) - return; - - /* Loop through the rows */ - for (i = 0, rp = row; i < num_rows; i++, rp++) - { - png_write_row(png_ptr, *rp); - } -} - -/* Write the image. You only need to call this function once, even - * if you are writing an interlaced image. - */ -void PNGAPI -png_write_image(png_structp png_ptr, png_bytepp image) -{ - png_uint_32 i; /* row index */ - int pass, num_pass; /* pass variables */ - png_bytepp rp; /* points to current row */ - - if (png_ptr == NULL) - return; - - png_debug(1, "in png_write_image"); - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Initialize interlace handling. If image is not interlaced, - * this will set pass to 1 - */ - num_pass = png_set_interlace_handling(png_ptr); -#else - num_pass = 1; -#endif - /* Loop through passes */ - for (pass = 0; pass < num_pass; pass++) - { - /* Loop through image */ - for (i = 0, rp = image; i < png_ptr->height; i++, rp++) - { - png_write_row(png_ptr, *rp); - } - } -} - -/* Called by user to write a row of image data */ -void PNGAPI -png_write_row(png_structp png_ptr, png_bytep row) -{ - if (png_ptr == NULL) - return; - - png_debug2(1, "in png_write_row (row %ld, pass %d)", - png_ptr->row_number, png_ptr->pass); - - /* Initialize transformations and other stuff if first time */ - if (png_ptr->row_number == 0 && png_ptr->pass == 0) - { - /* Make sure we wrote the header info */ - if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE)) - png_error(png_ptr, - "png_write_info was never called before png_write_row."); - - /* Check for transforms that have been set but were defined out */ -#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED) - if (png_ptr->transformations & PNG_INVERT_MONO) - png_warning(png_ptr, - "PNG_WRITE_INVERT_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED) - if (png_ptr->transformations & PNG_FILLER) - png_warning(png_ptr, - "PNG_WRITE_FILLER_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \ - defined(PNG_READ_PACKSWAP_SUPPORTED) - if (png_ptr->transformations & PNG_PACKSWAP) - png_warning(png_ptr, - "PNG_WRITE_PACKSWAP_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED) - if (png_ptr->transformations & PNG_PACK) - png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED) - if (png_ptr->transformations & PNG_SHIFT) - png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED) - if (png_ptr->transformations & PNG_BGR) - png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined."); -#endif -#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED) - if (png_ptr->transformations & PNG_SWAP_BYTES) - png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined."); -#endif - - png_write_start_row(png_ptr); - } - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced and not interested in row, return */ - if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE)) - { - switch (png_ptr->pass) - { - case 0: - if (png_ptr->row_number & 0x07) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 1: - if ((png_ptr->row_number & 0x07) || png_ptr->width < 5) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 2: - if ((png_ptr->row_number & 0x07) != 4) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 3: - if ((png_ptr->row_number & 0x03) || png_ptr->width < 3) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 4: - if ((png_ptr->row_number & 0x03) != 2) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 5: - if ((png_ptr->row_number & 0x01) || png_ptr->width < 2) - { - png_write_finish_row(png_ptr); - return; - } - break; - case 6: - if (!(png_ptr->row_number & 0x01)) - { - png_write_finish_row(png_ptr); - return; - } - break; - } - } -#endif - - /* Set up row info for transformations */ - png_ptr->row_info.color_type = png_ptr->color_type; - png_ptr->row_info.width = png_ptr->usr_width; - png_ptr->row_info.channels = png_ptr->usr_channels; - png_ptr->row_info.bit_depth = png_ptr->usr_bit_depth; - png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth * - png_ptr->row_info.channels); - - png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth, - png_ptr->row_info.width); - - png_debug1(3, "row_info->color_type = %d", png_ptr->row_info.color_type); - png_debug1(3, "row_info->width = %lu", png_ptr->row_info.width); - png_debug1(3, "row_info->channels = %d", png_ptr->row_info.channels); - png_debug1(3, "row_info->bit_depth = %d", png_ptr->row_info.bit_depth); - png_debug1(3, "row_info->pixel_depth = %d", png_ptr->row_info.pixel_depth); - png_debug1(3, "row_info->rowbytes = %lu", png_ptr->row_info.rowbytes); - - /* Copy user's row into buffer, leaving room for filter byte. */ - png_memcpy_check(png_ptr, png_ptr->row_buf + 1, row, - png_ptr->row_info.rowbytes); - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Handle interlacing */ - if (png_ptr->interlaced && png_ptr->pass < 6 && - (png_ptr->transformations & PNG_INTERLACE)) - { - png_do_write_interlace(&(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->pass); - /* This should always get caught above, but still ... */ - if (!(png_ptr->row_info.width)) - { - png_write_finish_row(png_ptr); - return; - } - } -#endif - - /* Handle other transformations */ - if (png_ptr->transformations) - png_do_write_transformations(png_ptr); - -#ifdef PNG_MNG_FEATURES_SUPPORTED - /* Write filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not write a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) - { - /* Intrapixel differencing */ - png_do_write_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1); - } -#endif - - /* Find a filter if necessary, filter the row and write it out. */ - png_write_find_filter(png_ptr, &(png_ptr->row_info)); - - if (png_ptr->write_row_fn != NULL) - (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass); -} - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -/* Set the automatic flush interval or 0 to turn flushing off */ -void PNGAPI -png_set_flush(png_structp png_ptr, int nrows) -{ - png_debug(1, "in png_set_flush"); - - if (png_ptr == NULL) - return; - png_ptr->flush_dist = (nrows < 0 ? 0 : nrows); -} - -/* Flush the current output buffers now */ -void PNGAPI -png_write_flush(png_structp png_ptr) -{ - int wrote_IDAT; - - png_debug(1, "in png_write_flush"); - - if (png_ptr == NULL) - return; - /* We have already written out all of the data */ - if (png_ptr->row_number >= png_ptr->num_rows) - return; - - do - { - int ret; - - /* Compress the data */ - ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH); - wrote_IDAT = 0; - - /* Check for compression errors */ - if (ret != Z_OK) - { - if (png_ptr->zstream.msg != NULL) - png_error(png_ptr, png_ptr->zstream.msg); - else - png_error(png_ptr, "zlib error"); - } - - if (!(png_ptr->zstream.avail_out)) - { - /* Write the IDAT and reset the zlib output buffer */ - png_write_IDAT(png_ptr, png_ptr->zbuf, - png_ptr->zbuf_size); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - wrote_IDAT = 1; - } - } while(wrote_IDAT == 1); - - /* If there is any data left to be output, write it into a new IDAT */ - if (png_ptr->zbuf_size != png_ptr->zstream.avail_out) - { - /* Write the IDAT and reset the zlib output buffer */ - png_write_IDAT(png_ptr, png_ptr->zbuf, - png_ptr->zbuf_size - png_ptr->zstream.avail_out); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - } - png_ptr->flush_rows = 0; - png_flush(png_ptr); -} -#endif /* PNG_WRITE_FLUSH_SUPPORTED */ - -/* Free all memory used by the write */ -void PNGAPI -png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr) -{ - png_structp png_ptr = NULL; - png_infop info_ptr = NULL; -#ifdef PNG_USER_MEM_SUPPORTED - png_free_ptr free_fn = NULL; - png_voidp mem_ptr = NULL; -#endif - - png_debug(1, "in png_destroy_write_struct"); - - if (png_ptr_ptr != NULL) - { - png_ptr = *png_ptr_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - free_fn = png_ptr->free_fn; - mem_ptr = png_ptr->mem_ptr; -#endif - } - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr != NULL) - { - free_fn = png_ptr->free_fn; - mem_ptr = png_ptr->mem_ptr; - } -#endif - - if (info_ptr_ptr != NULL) - info_ptr = *info_ptr_ptr; - - if (info_ptr != NULL) - { - if (png_ptr != NULL) - { - png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1); - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - if (png_ptr->num_chunk_list) - { - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list = NULL; - png_ptr->num_chunk_list = 0; - } -#endif - } - -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)info_ptr); -#endif - *info_ptr_ptr = NULL; - } - - if (png_ptr != NULL) - { - png_write_destroy(png_ptr); -#ifdef PNG_USER_MEM_SUPPORTED - png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); -#else - png_destroy_struct((png_voidp)png_ptr); -#endif - *png_ptr_ptr = NULL; - } -} - - -/* Free any memory used in png_ptr struct (old method) */ -void /* PRIVATE */ -png_write_destroy(png_structp png_ptr) -{ -#ifdef PNG_SETJMP_SUPPORTED - jmp_buf tmp_jmp; /* Save jump buffer */ -#endif - png_error_ptr error_fn; - png_error_ptr warning_fn; - png_voidp error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - png_free_ptr free_fn; -#endif - - png_debug(1, "in png_write_destroy"); - - /* Free any memory zlib uses */ - deflateEnd(&png_ptr->zstream); - - /* Free our memory. png_free checks NULL for us. */ - png_free(png_ptr, png_ptr->zbuf); - png_free(png_ptr, png_ptr->row_buf); -#ifdef PNG_WRITE_FILTER_SUPPORTED - png_free(png_ptr, png_ptr->prev_row); - png_free(png_ptr, png_ptr->sub_row); - png_free(png_ptr, png_ptr->up_row); - png_free(png_ptr, png_ptr->avg_row); - png_free(png_ptr, png_ptr->paeth_row); -#endif - -#ifdef PNG_TIME_RFC1123_SUPPORTED - png_free(png_ptr, png_ptr->time_buffer); -#endif - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - png_free(png_ptr, png_ptr->prev_filters); - png_free(png_ptr, png_ptr->filter_weights); - png_free(png_ptr, png_ptr->inv_filter_weights); - png_free(png_ptr, png_ptr->filter_costs); - png_free(png_ptr, png_ptr->inv_filter_costs); -#endif - -#ifdef PNG_SETJMP_SUPPORTED - /* Reset structure */ - png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf)); -#endif - - error_fn = png_ptr->error_fn; - warning_fn = png_ptr->warning_fn; - error_ptr = png_ptr->error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - free_fn = png_ptr->free_fn; -#endif - - png_memset(png_ptr, 0, png_sizeof(png_struct)); - - png_ptr->error_fn = error_fn; - png_ptr->warning_fn = warning_fn; - png_ptr->error_ptr = error_ptr; -#ifdef PNG_USER_MEM_SUPPORTED - png_ptr->free_fn = free_fn; -#endif - -#ifdef PNG_SETJMP_SUPPORTED - png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf)); -#endif -} - -/* Allow the application to select one or more row filters to use. */ -void PNGAPI -png_set_filter(png_structp png_ptr, int method, int filters) -{ - png_debug(1, "in png_set_filter"); - - if (png_ptr == NULL) - return; -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - (method == PNG_INTRAPIXEL_DIFFERENCING)) - method = PNG_FILTER_TYPE_BASE; -#endif - if (method == PNG_FILTER_TYPE_BASE) - { - switch (filters & (PNG_ALL_FILTERS | 0x07)) - { -#ifdef PNG_WRITE_FILTER_SUPPORTED - case 5: - case 6: - case 7: png_warning(png_ptr, "Unknown row filter for method 0"); -#endif /* PNG_WRITE_FILTER_SUPPORTED */ - case PNG_FILTER_VALUE_NONE: - png_ptr->do_filter = PNG_FILTER_NONE; break; -#ifdef PNG_WRITE_FILTER_SUPPORTED - case PNG_FILTER_VALUE_SUB: - png_ptr->do_filter = PNG_FILTER_SUB; break; - case PNG_FILTER_VALUE_UP: - png_ptr->do_filter = PNG_FILTER_UP; break; - case PNG_FILTER_VALUE_AVG: - png_ptr->do_filter = PNG_FILTER_AVG; break; - case PNG_FILTER_VALUE_PAETH: - png_ptr->do_filter = PNG_FILTER_PAETH; break; - default: png_ptr->do_filter = (png_byte)filters; break; -#else - default: png_warning(png_ptr, "Unknown row filter for method 0"); -#endif /* PNG_WRITE_FILTER_SUPPORTED */ - } - - /* If we have allocated the row_buf, this means we have already started - * with the image and we should have allocated all of the filter buffers - * that have been selected. If prev_row isn't already allocated, then - * it is too late to start using the filters that need it, since we - * will be missing the data in the previous row. If an application - * wants to start and stop using particular filters during compression, - * it should start out with all of the filters, and then add and - * remove them after the start of compression. - */ - if (png_ptr->row_buf != NULL) - { -#ifdef PNG_WRITE_FILTER_SUPPORTED - if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL) - { - png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, - (png_ptr->rowbytes + 1)); - png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB; - } - - if ((png_ptr->do_filter & PNG_FILTER_UP) && png_ptr->up_row == NULL) - { - if (png_ptr->prev_row == NULL) - { - png_warning(png_ptr, "Can't add Up filter after starting"); - png_ptr->do_filter &= ~PNG_FILTER_UP; - } - else - { - png_ptr->up_row = (png_bytep)png_malloc(png_ptr, - (png_ptr->rowbytes + 1)); - png_ptr->up_row[0] = PNG_FILTER_VALUE_UP; - } - } - - if ((png_ptr->do_filter & PNG_FILTER_AVG) && png_ptr->avg_row == NULL) - { - if (png_ptr->prev_row == NULL) - { - png_warning(png_ptr, "Can't add Average filter after starting"); - png_ptr->do_filter &= ~PNG_FILTER_AVG; - } - else - { - png_ptr->avg_row = (png_bytep)png_malloc(png_ptr, - (png_ptr->rowbytes + 1)); - png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG; - } - } - - if ((png_ptr->do_filter & PNG_FILTER_PAETH) && - png_ptr->paeth_row == NULL) - { - if (png_ptr->prev_row == NULL) - { - png_warning(png_ptr, "Can't add Paeth filter after starting"); - png_ptr->do_filter &= (png_byte)(~PNG_FILTER_PAETH); - } - else - { - png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr, - (png_ptr->rowbytes + 1)); - png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH; - } - } - - if (png_ptr->do_filter == PNG_NO_FILTERS) -#endif /* PNG_WRITE_FILTER_SUPPORTED */ - png_ptr->do_filter = PNG_FILTER_NONE; - } - } - else - png_error(png_ptr, "Unknown custom filter method"); -} - -/* This allows us to influence the way in which libpng chooses the "best" - * filter for the current scanline. While the "minimum-sum-of-absolute- - * differences metric is relatively fast and effective, there is some - * question as to whether it can be improved upon by trying to keep the - * filtered data going to zlib more consistent, hopefully resulting in - * better compression. - */ -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */ -void PNGAPI -png_set_filter_heuristics(png_structp png_ptr, int heuristic_method, - int num_weights, png_doublep filter_weights, - png_doublep filter_costs) -{ - int i; - - png_debug(1, "in png_set_filter_heuristics"); - - if (png_ptr == NULL) - return; - if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST) - { - png_warning(png_ptr, "Unknown filter heuristic method"); - return; - } - - if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT) - { - heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED; - } - - if (num_weights < 0 || filter_weights == NULL || - heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED) - { - num_weights = 0; - } - - png_ptr->num_prev_filters = (png_byte)num_weights; - png_ptr->heuristic_method = (png_byte)heuristic_method; - - if (num_weights > 0) - { - if (png_ptr->prev_filters == NULL) - { - png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(png_sizeof(png_byte) * num_weights)); - - /* To make sure that the weighting starts out fairly */ - for (i = 0; i < num_weights; i++) - { - png_ptr->prev_filters[i] = 255; - } - } - - if (png_ptr->filter_weights == NULL) - { - png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(png_sizeof(png_uint_16) * num_weights)); - - png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(png_sizeof(png_uint_16) * num_weights)); - for (i = 0; i < num_weights; i++) - { - png_ptr->inv_filter_weights[i] = - png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR; - } - } - - for (i = 0; i < num_weights; i++) - { - if (filter_weights[i] < 0.0) - { - png_ptr->inv_filter_weights[i] = - png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR; - } - else - { - png_ptr->inv_filter_weights[i] = - (png_uint_16)((double)PNG_WEIGHT_FACTOR*filter_weights[i]+0.5); - png_ptr->filter_weights[i] = - (png_uint_16)((double)PNG_WEIGHT_FACTOR/filter_weights[i]+0.5); - } - } - } - - /* If, in the future, there are other filter methods, this would - * need to be based on png_ptr->filter. - */ - if (png_ptr->filter_costs == NULL) - { - png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST)); - - png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr, - (png_uint_32)(png_sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST)); - - for (i = 0; i < PNG_FILTER_VALUE_LAST; i++) - { - png_ptr->inv_filter_costs[i] = - png_ptr->filter_costs[i] = PNG_COST_FACTOR; - } - } - - /* Here is where we set the relative costs of the different filters. We - * should take the desired compression level into account when setting - * the costs, so that Paeth, for instance, has a high relative cost at low - * compression levels, while it has a lower relative cost at higher - * compression settings. The filter types are in order of increasing - * relative cost, so it would be possible to do this with an algorithm. - */ - for (i = 0; i < PNG_FILTER_VALUE_LAST; i++) - { - if (filter_costs == NULL || filter_costs[i] < 0.0) - { - png_ptr->inv_filter_costs[i] = - png_ptr->filter_costs[i] = PNG_COST_FACTOR; - } - else if (filter_costs[i] >= 1.0) - { - png_ptr->inv_filter_costs[i] = - (png_uint_16)((double)PNG_COST_FACTOR / filter_costs[i] + 0.5); - png_ptr->filter_costs[i] = - (png_uint_16)((double)PNG_COST_FACTOR * filter_costs[i] + 0.5); - } - } -} -#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */ - -void PNGAPI -png_set_compression_level(png_structp png_ptr, int level) -{ - png_debug(1, "in png_set_compression_level"); - - if (png_ptr == NULL) - return; - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL; - png_ptr->zlib_level = level; -} - -void PNGAPI -png_set_compression_mem_level(png_structp png_ptr, int mem_level) -{ - png_debug(1, "in png_set_compression_mem_level"); - - if (png_ptr == NULL) - return; - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL; - png_ptr->zlib_mem_level = mem_level; -} - -void PNGAPI -png_set_compression_strategy(png_structp png_ptr, int strategy) -{ - png_debug(1, "in png_set_compression_strategy"); - - if (png_ptr == NULL) - return; - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY; - png_ptr->zlib_strategy = strategy; -} - -void PNGAPI -png_set_compression_window_bits(png_structp png_ptr, int window_bits) -{ - if (png_ptr == NULL) - return; - if (window_bits > 15) - png_warning(png_ptr, "Only compression windows <= 32k supported by PNG"); - else if (window_bits < 8) - png_warning(png_ptr, "Only compression windows >= 256 supported by PNG"); -#ifndef WBITS_8_OK - /* Avoid libpng bug with 256-byte windows */ - if (window_bits == 8) - { - png_warning(png_ptr, "Compression window is being reset to 512"); - window_bits = 9; - } -#endif - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS; - png_ptr->zlib_window_bits = window_bits; -} - -void PNGAPI -png_set_compression_method(png_structp png_ptr, int method) -{ - png_debug(1, "in png_set_compression_method"); - - if (png_ptr == NULL) - return; - if (method != 8) - png_warning(png_ptr, "Only compression method 8 is supported by PNG"); - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_METHOD; - png_ptr->zlib_method = method; -} - -void PNGAPI -png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn) -{ - if (png_ptr == NULL) - return; - png_ptr->write_row_fn = write_row_fn; -} - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED -void PNGAPI -png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr - write_user_transform_fn) -{ - png_debug(1, "in png_set_write_user_transform_fn"); - - if (png_ptr == NULL) - return; - png_ptr->transformations |= PNG_USER_TRANSFORM; - png_ptr->write_user_transform_fn = write_user_transform_fn; -} -#endif - - -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_write_png(png_structp png_ptr, png_infop info_ptr, - int transforms, voidp params) -{ - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* Write the file header information. */ - png_write_info(png_ptr, info_ptr); - - /* ------ these transformations don't touch the info structure ------- */ - -#ifdef PNG_WRITE_INVERT_SUPPORTED - /* Invert monochrome pixels */ - if (transforms & PNG_TRANSFORM_INVERT_MONO) - png_set_invert_mono(png_ptr); -#endif - -#ifdef PNG_WRITE_SHIFT_SUPPORTED - /* Shift the pixels up to a legal bit depth and fill in - * as appropriate to correctly scale the image. - */ - if ((transforms & PNG_TRANSFORM_SHIFT) - && (info_ptr->valid & PNG_INFO_sBIT)) - png_set_shift(png_ptr, &info_ptr->sig_bit); -#endif - -#ifdef PNG_WRITE_PACK_SUPPORTED - /* Pack pixels into bytes */ - if (transforms & PNG_TRANSFORM_PACKING) - png_set_packing(png_ptr); -#endif - -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED - /* Swap location of alpha bytes from ARGB to RGBA */ - if (transforms & PNG_TRANSFORM_SWAP_ALPHA) - png_set_swap_alpha(png_ptr); -#endif - -#ifdef PNG_WRITE_FILLER_SUPPORTED - /* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */ - if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER) - png_set_filler(png_ptr, 0, PNG_FILLER_AFTER); - else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) - png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); -#endif - -#ifdef PNG_WRITE_BGR_SUPPORTED - /* Flip BGR pixels to RGB */ - if (transforms & PNG_TRANSFORM_BGR) - png_set_bgr(png_ptr); -#endif - -#ifdef PNG_WRITE_SWAP_SUPPORTED - /* Swap bytes of 16-bit files to most significant byte first */ - if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) - png_set_swap(png_ptr); -#endif - -#ifdef PNG_WRITE_PACKSWAP_SUPPORTED - /* Swap bits of 1, 2, 4 bit packed pixel formats */ - if (transforms & PNG_TRANSFORM_PACKSWAP) - png_set_packswap(png_ptr); -#endif - -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel from opacity to transparency */ - if (transforms & PNG_TRANSFORM_INVERT_ALPHA) - png_set_invert_alpha(png_ptr); -#endif - - /* ----------------------- end of transformations ------------------- */ - - /* Write the bits */ - if (info_ptr->valid & PNG_INFO_IDAT) - png_write_image(png_ptr, info_ptr->row_pointers); - - /* It is REQUIRED to call this to finish writing the rest of the file */ - png_write_end(png_ptr, info_ptr); - - transforms = transforms; /* Quiet compiler warnings */ - params = params; -} -#endif -#endif /* PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwtran.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwtran.c deleted file mode 100644 index 0ce9b9b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwtran.c +++ /dev/null @@ -1,582 +0,0 @@ - -/* pngwtran.c - transforms the data in a row for PNG writers - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_WRITE_SUPPORTED - -/* Transform the data according to the user's wishes. The order of - * transformations is significant. - */ -void /* PRIVATE */ -png_do_write_transformations(png_structp png_ptr) -{ - png_debug(1, "in png_do_write_transformations"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - if (png_ptr->transformations & PNG_USER_TRANSFORM) - if (png_ptr->write_user_transform_fn != NULL) - (*(png_ptr->write_user_transform_fn)) /* User write transform - function */ - (png_ptr, /* png_ptr */ - &(png_ptr->row_info), /* row_info: */ - /* png_uint_32 width; width of row */ - /* png_uint_32 rowbytes; number of bytes in row */ - /* png_byte color_type; color type of pixels */ - /* png_byte bit_depth; bit depth of samples */ - /* png_byte channels; number of channels (1-4) */ - /* png_byte pixel_depth; bits per pixel (depth*channels) */ - png_ptr->row_buf + 1); /* start of pixel data for row */ -#endif -#ifdef PNG_WRITE_FILLER_SUPPORTED - if (png_ptr->transformations & PNG_FILLER) - png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1, - png_ptr->flags); -#endif -#ifdef PNG_WRITE_PACKSWAP_SUPPORTED - if (png_ptr->transformations & PNG_PACKSWAP) - png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -#ifdef PNG_WRITE_PACK_SUPPORTED - if (png_ptr->transformations & PNG_PACK) - png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1, - (png_uint_32)png_ptr->bit_depth); -#endif -#ifdef PNG_WRITE_SWAP_SUPPORTED - if (png_ptr->transformations & PNG_SWAP_BYTES) - png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -#ifdef PNG_WRITE_SHIFT_SUPPORTED - if (png_ptr->transformations & PNG_SHIFT) - png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1, - &(png_ptr->shift)); -#endif -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED - if (png_ptr->transformations & PNG_SWAP_ALPHA) - png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - if (png_ptr->transformations & PNG_INVERT_ALPHA) - png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -#ifdef PNG_WRITE_BGR_SUPPORTED - if (png_ptr->transformations & PNG_BGR) - png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -#ifdef PNG_WRITE_INVERT_SUPPORTED - if (png_ptr->transformations & PNG_INVERT_MONO) - png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif -} - -#ifdef PNG_WRITE_PACK_SUPPORTED -/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The - * row_info bit depth should be 8 (one pixel per byte). The channels - * should be 1 (this only happens on grayscale and paletted images). - */ -void /* PRIVATE */ -png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth) -{ - png_debug(1, "in png_do_pack"); - - if (row_info->bit_depth == 8 && -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - row_info->channels == 1) - { - switch ((int)bit_depth) - { - case 1: - { - png_bytep sp, dp; - int mask, v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - mask = 0x80; - v = 0; - - for (i = 0; i < row_width; i++) - { - if (*sp != 0) - v |= mask; - sp++; - if (mask > 1) - mask >>= 1; - else - { - mask = 0x80; - *dp = (png_byte)v; - dp++; - v = 0; - } - } - if (mask != 0x80) - *dp = (png_byte)v; - break; - } - case 2: - { - png_bytep sp, dp; - int shift, v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - shift = 6; - v = 0; - for (i = 0; i < row_width; i++) - { - png_byte value; - - value = (png_byte)(*sp & 0x03); - v |= (value << shift); - if (shift == 0) - { - shift = 6; - *dp = (png_byte)v; - dp++; - v = 0; - } - else - shift -= 2; - sp++; - } - if (shift != 6) - *dp = (png_byte)v; - break; - } - case 4: - { - png_bytep sp, dp; - int shift, v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - shift = 4; - v = 0; - for (i = 0; i < row_width; i++) - { - png_byte value; - - value = (png_byte)(*sp & 0x0f); - v |= (value << shift); - - if (shift == 0) - { - shift = 4; - *dp = (png_byte)v; - dp++; - v = 0; - } - else - shift -= 4; - - sp++; - } - if (shift != 4) - *dp = (png_byte)v; - break; - } - } - row_info->bit_depth = (png_byte)bit_depth; - row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_info->width); - } -} -#endif - -#ifdef PNG_WRITE_SHIFT_SUPPORTED -/* Shift pixel values to take advantage of whole range. Pass the - * true number of bits in bit_depth. The row should be packed - * according to row_info->bit_depth. Thus, if you had a row of - * bit depth 4, but the pixels only had values from 0 to 7, you - * would pass 3 as bit_depth, and this routine would translate the - * data to 0 to 15. - */ -void /* PRIVATE */ -png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth) -{ - png_debug(1, "in png_do_shift"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL && -#else - if ( -#endif - row_info->color_type != PNG_COLOR_TYPE_PALETTE) - { - int shift_start[4], shift_dec[4]; - int channels = 0; - - if (row_info->color_type & PNG_COLOR_MASK_COLOR) - { - shift_start[channels] = row_info->bit_depth - bit_depth->red; - shift_dec[channels] = bit_depth->red; - channels++; - shift_start[channels] = row_info->bit_depth - bit_depth->green; - shift_dec[channels] = bit_depth->green; - channels++; - shift_start[channels] = row_info->bit_depth - bit_depth->blue; - shift_dec[channels] = bit_depth->blue; - channels++; - } - else - { - shift_start[channels] = row_info->bit_depth - bit_depth->gray; - shift_dec[channels] = bit_depth->gray; - channels++; - } - if (row_info->color_type & PNG_COLOR_MASK_ALPHA) - { - shift_start[channels] = row_info->bit_depth - bit_depth->alpha; - shift_dec[channels] = bit_depth->alpha; - channels++; - } - - /* With low row depths, could only be grayscale, so one channel */ - if (row_info->bit_depth < 8) - { - png_bytep bp = row; - png_uint_32 i; - png_byte mask; - png_uint_32 row_bytes = row_info->rowbytes; - - if (bit_depth->gray == 1 && row_info->bit_depth == 2) - mask = 0x55; - else if (row_info->bit_depth == 4 && bit_depth->gray == 3) - mask = 0x11; - else - mask = 0xff; - - for (i = 0; i < row_bytes; i++, bp++) - { - png_uint_16 v; - int j; - - v = *bp; - *bp = 0; - for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0]) - { - if (j > 0) - *bp |= (png_byte)((v << j) & 0xff); - else - *bp |= (png_byte)((v >> (-j)) & mask); - } - } - } - else if (row_info->bit_depth == 8) - { - png_bytep bp = row; - png_uint_32 i; - png_uint_32 istop = channels * row_info->width; - - for (i = 0; i < istop; i++, bp++) - { - - png_uint_16 v; - int j; - int c = (int)(i%channels); - - v = *bp; - *bp = 0; - for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c]) - { - if (j > 0) - *bp |= (png_byte)((v << j) & 0xff); - else - *bp |= (png_byte)((v >> (-j)) & 0xff); - } - } - } - else - { - png_bytep bp; - png_uint_32 i; - png_uint_32 istop = channels * row_info->width; - - for (bp = row, i = 0; i < istop; i++) - { - int c = (int)(i%channels); - png_uint_16 value, v; - int j; - - v = (png_uint_16)(((png_uint_16)(*bp) << 8) + *(bp + 1)); - value = 0; - for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c]) - { - if (j > 0) - value |= (png_uint_16)((v << j) & (png_uint_16)0xffff); - else - value |= (png_uint_16)((v >> (-j)) & (png_uint_16)0xffff); - } - *bp++ = (png_byte)(value >> 8); - *bp++ = (png_byte)(value & 0xff); - } - } - } -} -#endif - -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED -void /* PRIVATE */ -png_do_write_swap_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_swap_alpha"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - /* This converts from ARGB to RGBA */ - if (row_info->bit_depth == 8) - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save; - } - } - /* This converts from AARRGGBB to RRGGBBAA */ - else - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save[2]; - save[0] = *(sp++); - save[1] = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save[0]; - *(dp++) = save[1]; - } - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - /* This converts from AG to GA */ - if (row_info->bit_depth == 8) - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save; - } - } - /* This converts from AAGG to GGAA */ - else - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save[2]; - save[0] = *(sp++); - save[1] = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save[0]; - *(dp++) = save[1]; - } - } - } - } -} -#endif - -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED -void /* PRIVATE */ -png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_invert_alpha"); - -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL) -#endif - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - /* This inverts the alpha channel in RGBA */ - if (row_info->bit_depth == 8) - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=3; dp = sp; - *(dp++) = (png_byte)(255 - *(sp++)); - } - } - /* This inverts the alpha channel in RRGGBBAA */ - else - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=6; dp = sp; - *(dp++) = (png_byte)(255 - *(sp++)); - *(dp++) = (png_byte)(255 - *(sp++)); - } - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - /* This inverts the alpha channel in GA */ - if (row_info->bit_depth == 8) - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - *(dp++) = *(sp++); - *(dp++) = (png_byte)(255 - *(sp++)); - } - } - /* This inverts the alpha channel in GGAA */ - else - { - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=2; dp = sp; - *(dp++) = (png_byte)(255 - *(sp++)); - *(dp++) = (png_byte)(255 - *(sp++)); - } - } - } - } -} -#endif - -#ifdef PNG_MNG_FEATURES_SUPPORTED -/* Undoes intrapixel differencing */ -void /* PRIVATE */ -png_do_write_intrapixel(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_intrapixel"); - - if ( -#ifdef PNG_USELESS_TESTS_SUPPORTED - row != NULL && row_info != NULL && -#endif - (row_info->color_type & PNG_COLOR_MASK_COLOR)) - { - int bytes_per_pixel; - png_uint_32 row_width = row_info->width; - if (row_info->bit_depth == 8) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 3; - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 4; - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - *(rp) = (png_byte)((*rp - *(rp+1))&0xff); - *(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff); - } - } - else if (row_info->bit_depth == 16) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 6; - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 8; - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - png_uint_32 s0 = (*(rp ) << 8) | *(rp+1); - png_uint_32 s1 = (*(rp+2) << 8) | *(rp+3); - png_uint_32 s2 = (*(rp+4) << 8) | *(rp+5); - png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL); - png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL); - *(rp ) = (png_byte)((red >> 8) & 0xff); - *(rp+1) = (png_byte)(red & 0xff); - *(rp+4) = (png_byte)((blue >> 8) & 0xff); - *(rp+5) = (png_byte)(blue & 0xff); - } - } - } -} -#endif /* PNG_MNG_FEATURES_SUPPORTED */ -#endif /* PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwutil.c b/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwutil.c deleted file mode 100644 index c75f53e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/libpng/pngwutil.c +++ /dev/null @@ -1,2832 +0,0 @@ - -/* pngwutil.c - utilities to write a PNG file - * - * Last changed in libpng 1.2.43 [February 25, 2010] - * Copyright (c) 1998-2010 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#define PNG_INTERNAL -#define PNG_NO_PEDANTIC_WARNINGS -#include "png.h" -#ifdef PNG_WRITE_SUPPORTED - -/* Place a 32-bit number into a buffer in PNG byte order. We work - * with unsigned numbers for convenience, although one supported - * ancillary chunk uses signed (two's complement) numbers. - */ -void PNGAPI -png_save_uint_32(png_bytep buf, png_uint_32 i) -{ - buf[0] = (png_byte)((i >> 24) & 0xff); - buf[1] = (png_byte)((i >> 16) & 0xff); - buf[2] = (png_byte)((i >> 8) & 0xff); - buf[3] = (png_byte)(i & 0xff); -} - -/* The png_save_int_32 function assumes integers are stored in two's - * complement format. If this isn't the case, then this routine needs to - * be modified to write data in two's complement format. - */ -void PNGAPI -png_save_int_32(png_bytep buf, png_int_32 i) -{ - buf[0] = (png_byte)((i >> 24) & 0xff); - buf[1] = (png_byte)((i >> 16) & 0xff); - buf[2] = (png_byte)((i >> 8) & 0xff); - buf[3] = (png_byte)(i & 0xff); -} - -/* Place a 16-bit number into a buffer in PNG byte order. - * The parameter is declared unsigned int, not png_uint_16, - * just to avoid potential problems on pre-ANSI C compilers. - */ -void PNGAPI -png_save_uint_16(png_bytep buf, unsigned int i) -{ - buf[0] = (png_byte)((i >> 8) & 0xff); - buf[1] = (png_byte)(i & 0xff); -} - -/* Simple function to write the signature. If we have already written - * the magic bytes of the signature, or more likely, the PNG stream is - * being embedded into another stream and doesn't need its own signature, - * we should call png_set_sig_bytes() to tell libpng how many of the - * bytes have already been written. - */ -void /* PRIVATE */ -png_write_sig(png_structp png_ptr) -{ - png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - - /* Write the rest of the 8 byte signature */ - png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes], - (png_size_t)(8 - png_ptr->sig_bytes)); - if (png_ptr->sig_bytes < 3) - png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; -} - -/* Write a PNG chunk all at once. The type is an array of ASCII characters - * representing the chunk name. The array must be at least 4 bytes in - * length, and does not need to be null terminated. To be safe, pass the - * pre-defined chunk names here, and if you need a new one, define it - * where the others are defined. The length is the length of the data. - * All the data must be present. If that is not possible, use the - * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end() - * functions instead. - */ -void PNGAPI -png_write_chunk(png_structp png_ptr, png_bytep chunk_name, - png_bytep data, png_size_t length) -{ - if (png_ptr == NULL) - return; - png_write_chunk_start(png_ptr, chunk_name, (png_uint_32)length); - png_write_chunk_data(png_ptr, data, (png_size_t)length); - png_write_chunk_end(png_ptr); -} - -/* Write the start of a PNG chunk. The type is the chunk type. - * The total_length is the sum of the lengths of all the data you will be - * passing in png_write_chunk_data(). - */ -void PNGAPI -png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name, - png_uint_32 length) -{ - png_byte buf[8]; - - png_debug2(0, "Writing %s chunk, length = %lu", chunk_name, - (unsigned long)length); - - if (png_ptr == NULL) - return; - - - /* Write the length and the chunk name */ - png_save_uint_32(buf, length); - png_memcpy(buf + 4, chunk_name, 4); - png_write_data(png_ptr, buf, (png_size_t)8); - /* Put the chunk name into png_ptr->chunk_name */ - png_memcpy(png_ptr->chunk_name, chunk_name, 4); - /* Reset the crc and run it over the chunk name */ - png_reset_crc(png_ptr); - png_calculate_crc(png_ptr, chunk_name, (png_size_t)4); -} - -/* Write the data of a PNG chunk started with png_write_chunk_start(). - * Note that multiple calls to this function are allowed, and that the - * sum of the lengths from these calls *must* add up to the total_length - * given to png_write_chunk_start(). - */ -void PNGAPI -png_write_chunk_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - /* Write the data, and run the CRC over it */ - if (png_ptr == NULL) - return; - if (data != NULL && length > 0) - { - png_write_data(png_ptr, data, length); - /* Update the CRC after writing the data, - * in case that the user I/O routine alters it. - */ - png_calculate_crc(png_ptr, data, length); - } -} - -/* Finish a chunk started with png_write_chunk_start(). */ -void PNGAPI -png_write_chunk_end(png_structp png_ptr) -{ - png_byte buf[4]; - - if (png_ptr == NULL) return; - - /* Write the crc in a single operation */ - png_save_uint_32(buf, png_ptr->crc); - - png_write_data(png_ptr, buf, (png_size_t)4); -} - -#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_iCCP_SUPPORTED) -/* This pair of functions encapsulates the operation of (a) compressing a - * text string, and (b) issuing it later as a series of chunk data writes. - * The compression_state structure is shared context for these functions - * set up by the caller in order to make the whole mess thread-safe. - */ - -typedef struct -{ - char *input; /* The uncompressed input data */ - int input_len; /* Its length */ - int num_output_ptr; /* Number of output pointers used */ - int max_output_ptr; /* Size of output_ptr */ - png_charpp output_ptr; /* Array of pointers to output */ -} compression_state; - -/* Compress given text into storage in the png_ptr structure */ -static int /* PRIVATE */ -png_text_compress(png_structp png_ptr, - png_charp text, png_size_t text_len, int compression, - compression_state *comp) -{ - int ret; - - comp->num_output_ptr = 0; - comp->max_output_ptr = 0; - comp->output_ptr = NULL; - comp->input = NULL; - comp->input_len = 0; - - /* We may just want to pass the text right through */ - if (compression == PNG_TEXT_COMPRESSION_NONE) - { - comp->input = text; - comp->input_len = text_len; - return((int)text_len); - } - - if (compression >= PNG_TEXT_COMPRESSION_LAST) - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char msg[50]; - png_snprintf(msg, 50, "Unknown compression type %d", compression); - png_warning(png_ptr, msg); -#else - png_warning(png_ptr, "Unknown compression type"); -#endif - } - - /* We can't write the chunk until we find out how much data we have, - * which means we need to run the compressor first and save the - * output. This shouldn't be a problem, as the vast majority of - * comments should be reasonable, but we will set up an array of - * malloc'd pointers to be sure. - * - * If we knew the application was well behaved, we could simplify this - * greatly by assuming we can always malloc an output buffer large - * enough to hold the compressed text ((1001 * text_len / 1000) + 12) - * and malloc this directly. The only time this would be a bad idea is - * if we can't malloc more than 64K and we have 64K of random input - * data, or if the input string is incredibly large (although this - * wouldn't cause a failure, just a slowdown due to swapping). - */ - - /* Set up the compression buffers */ - png_ptr->zstream.avail_in = (uInt)text_len; - png_ptr->zstream.next_in = (Bytef *)text; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_out = (Bytef *)png_ptr->zbuf; - - /* This is the same compression loop as in png_write_row() */ - do - { - /* Compress the data */ - ret = deflate(&png_ptr->zstream, Z_NO_FLUSH); - if (ret != Z_OK) - { - /* Error */ - if (png_ptr->zstream.msg != NULL) - png_error(png_ptr, png_ptr->zstream.msg); - else - png_error(png_ptr, "zlib error"); - } - /* Check to see if we need more room */ - if (!(png_ptr->zstream.avail_out)) - { - /* Make sure the output array has room */ - if (comp->num_output_ptr >= comp->max_output_ptr) - { - int old_max; - - old_max = comp->max_output_ptr; - comp->max_output_ptr = comp->num_output_ptr + 4; - if (comp->output_ptr != NULL) - { - png_charpp old_ptr; - - old_ptr = comp->output_ptr; - comp->output_ptr = (png_charpp)png_malloc(png_ptr, - (png_uint_32) - (comp->max_output_ptr * png_sizeof(png_charpp))); - png_memcpy(comp->output_ptr, old_ptr, old_max - * png_sizeof(png_charp)); - png_free(png_ptr, old_ptr); - } - else - comp->output_ptr = (png_charpp)png_malloc(png_ptr, - (png_uint_32) - (comp->max_output_ptr * png_sizeof(png_charp))); - } - - /* Save the data */ - comp->output_ptr[comp->num_output_ptr] = - (png_charp)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); - png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf, - png_ptr->zbuf_size); - comp->num_output_ptr++; - - /* and reset the buffer */ - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_out = png_ptr->zbuf; - } - /* Continue until we don't have any more to compress */ - } while (png_ptr->zstream.avail_in); - - /* Finish the compression */ - do - { - /* Tell zlib we are finished */ - ret = deflate(&png_ptr->zstream, Z_FINISH); - - if (ret == Z_OK) - { - /* Check to see if we need more room */ - if (!(png_ptr->zstream.avail_out)) - { - /* Check to make sure our output array has room */ - if (comp->num_output_ptr >= comp->max_output_ptr) - { - int old_max; - - old_max = comp->max_output_ptr; - comp->max_output_ptr = comp->num_output_ptr + 4; - if (comp->output_ptr != NULL) - { - png_charpp old_ptr; - - old_ptr = comp->output_ptr; - /* This could be optimized to realloc() */ - comp->output_ptr = (png_charpp)png_malloc(png_ptr, - (png_uint_32)(comp->max_output_ptr * - png_sizeof(png_charp))); - png_memcpy(comp->output_ptr, old_ptr, - old_max * png_sizeof(png_charp)); - png_free(png_ptr, old_ptr); - } - else - comp->output_ptr = (png_charpp)png_malloc(png_ptr, - (png_uint_32)(comp->max_output_ptr * - png_sizeof(png_charp))); - } - - /* Save the data */ - comp->output_ptr[comp->num_output_ptr] = - (png_charp)png_malloc(png_ptr, - (png_uint_32)png_ptr->zbuf_size); - png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf, - png_ptr->zbuf_size); - comp->num_output_ptr++; - - /* and reset the buffer pointers */ - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_out = png_ptr->zbuf; - } - } - else if (ret != Z_STREAM_END) - { - /* We got an error */ - if (png_ptr->zstream.msg != NULL) - png_error(png_ptr, png_ptr->zstream.msg); - else - png_error(png_ptr, "zlib error"); - } - } while (ret != Z_STREAM_END); - - /* Text length is number of buffers plus last buffer */ - text_len = png_ptr->zbuf_size * comp->num_output_ptr; - if (png_ptr->zstream.avail_out < png_ptr->zbuf_size) - text_len += png_ptr->zbuf_size - (png_size_t)png_ptr->zstream.avail_out; - - return((int)text_len); -} - -/* Ship the compressed text out via chunk writes */ -static void /* PRIVATE */ -png_write_compressed_data_out(png_structp png_ptr, compression_state *comp) -{ - int i; - - /* Handle the no-compression case */ - if (comp->input) - { - png_write_chunk_data(png_ptr, (png_bytep)comp->input, - (png_size_t)comp->input_len); - return; - } - - /* Write saved output buffers, if any */ - for (i = 0; i < comp->num_output_ptr; i++) - { - png_write_chunk_data(png_ptr, (png_bytep)comp->output_ptr[i], - (png_size_t)png_ptr->zbuf_size); - png_free(png_ptr, comp->output_ptr[i]); - comp->output_ptr[i]=NULL; - } - if (comp->max_output_ptr != 0) - png_free(png_ptr, comp->output_ptr); - comp->output_ptr=NULL; - /* Write anything left in zbuf */ - if (png_ptr->zstream.avail_out < (png_uint_32)png_ptr->zbuf_size) - png_write_chunk_data(png_ptr, png_ptr->zbuf, - (png_size_t)(png_ptr->zbuf_size - png_ptr->zstream.avail_out)); - - /* Reset zlib for another zTXt/iTXt or image data */ - deflateReset(&png_ptr->zstream); - png_ptr->zstream.data_type = Z_BINARY; -} -#endif - -/* Write the IHDR chunk, and update the png_struct with the necessary - * information. Note that the rest of this code depends upon this - * information being correct. - */ -void /* PRIVATE */ -png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height, - int bit_depth, int color_type, int compression_type, int filter_type, - int interlace_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_IHDR; -#endif - int ret; - - png_byte buf[13]; /* Buffer to store the IHDR info */ - - png_debug(1, "in png_write_IHDR"); - - /* Check that we have valid input data from the application info */ - switch (color_type) - { - case PNG_COLOR_TYPE_GRAY: - switch (bit_depth) - { - case 1: - case 2: - case 4: - case 8: - case 16: png_ptr->channels = 1; break; - default: png_error(png_ptr, - "Invalid bit depth for grayscale image"); - } - break; - case PNG_COLOR_TYPE_RGB: - if (bit_depth != 8 && bit_depth != 16) - png_error(png_ptr, "Invalid bit depth for RGB image"); - png_ptr->channels = 3; - break; - case PNG_COLOR_TYPE_PALETTE: - switch (bit_depth) - { - case 1: - case 2: - case 4: - case 8: png_ptr->channels = 1; break; - default: png_error(png_ptr, "Invalid bit depth for paletted image"); - } - break; - case PNG_COLOR_TYPE_GRAY_ALPHA: - if (bit_depth != 8 && bit_depth != 16) - png_error(png_ptr, "Invalid bit depth for grayscale+alpha image"); - png_ptr->channels = 2; - break; - case PNG_COLOR_TYPE_RGB_ALPHA: - if (bit_depth != 8 && bit_depth != 16) - png_error(png_ptr, "Invalid bit depth for RGBA image"); - png_ptr->channels = 4; - break; - default: - png_error(png_ptr, "Invalid image color type specified"); - } - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - { - png_warning(png_ptr, "Invalid compression type specified"); - compression_type = PNG_COMPRESSION_TYPE_BASE; - } - - /* Write filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not write a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ( -#ifdef PNG_MNG_FEATURES_SUPPORTED - !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) && - (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) && - (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) && -#endif - filter_type != PNG_FILTER_TYPE_BASE) - { - png_warning(png_ptr, "Invalid filter type specified"); - filter_type = PNG_FILTER_TYPE_BASE; - } - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - if (interlace_type != PNG_INTERLACE_NONE && - interlace_type != PNG_INTERLACE_ADAM7) - { - png_warning(png_ptr, "Invalid interlace type specified"); - interlace_type = PNG_INTERLACE_ADAM7; - } -#else - interlace_type=PNG_INTERLACE_NONE; -#endif - - /* Save the relevent information */ - png_ptr->bit_depth = (png_byte)bit_depth; - png_ptr->color_type = (png_byte)color_type; - png_ptr->interlaced = (png_byte)interlace_type; -#ifdef PNG_MNG_FEATURES_SUPPORTED - png_ptr->filter_type = (png_byte)filter_type; -#endif - png_ptr->compression_type = (png_byte)compression_type; - png_ptr->width = width; - png_ptr->height = height; - - png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels); - png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width); - /* Set the usr info, so any transformations can modify it */ - png_ptr->usr_width = png_ptr->width; - png_ptr->usr_bit_depth = png_ptr->bit_depth; - png_ptr->usr_channels = png_ptr->channels; - - /* Pack the header information into the buffer */ - png_save_uint_32(buf, width); - png_save_uint_32(buf + 4, height); - buf[8] = (png_byte)bit_depth; - buf[9] = (png_byte)color_type; - buf[10] = (png_byte)compression_type; - buf[11] = (png_byte)filter_type; - buf[12] = (png_byte)interlace_type; - - /* Write the chunk */ - png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13); - - /* Initialize zlib with PNG info */ - png_ptr->zstream.zalloc = png_zalloc; - png_ptr->zstream.zfree = png_zfree; - png_ptr->zstream.opaque = (voidpf)png_ptr; - if (!(png_ptr->do_filter)) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE || - png_ptr->bit_depth < 8) - png_ptr->do_filter = PNG_FILTER_NONE; - else - png_ptr->do_filter = PNG_ALL_FILTERS; - } - if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY)) - { - if (png_ptr->do_filter != PNG_FILTER_NONE) - png_ptr->zlib_strategy = Z_FILTERED; - else - png_ptr->zlib_strategy = Z_DEFAULT_STRATEGY; - } - if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_LEVEL)) - png_ptr->zlib_level = Z_DEFAULT_COMPRESSION; - if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL)) - png_ptr->zlib_mem_level = 8; - if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS)) - png_ptr->zlib_window_bits = 15; - if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD)) - png_ptr->zlib_method = 8; - ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level, - png_ptr->zlib_method, png_ptr->zlib_window_bits, - png_ptr->zlib_mem_level, png_ptr->zlib_strategy); - if (ret != Z_OK) - { - if (ret == Z_VERSION_ERROR) png_error(png_ptr, - "zlib failed to initialize compressor -- version error"); - if (ret == Z_STREAM_ERROR) png_error(png_ptr, - "zlib failed to initialize compressor -- stream error"); - if (ret == Z_MEM_ERROR) png_error(png_ptr, - "zlib failed to initialize compressor -- mem error"); - png_error(png_ptr, "zlib failed to initialize compressor"); - } - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - /* libpng is not interested in zstream.data_type */ - /* Set it to a predefined value, to avoid its evaluation inside zlib */ - png_ptr->zstream.data_type = Z_BINARY; - - png_ptr->mode = PNG_HAVE_IHDR; -} - -/* Write the palette. We are careful not to trust png_color to be in the - * correct order for PNG, so people can redefine it to any convenient - * structure. - */ -void /* PRIVATE */ -png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_PLTE; -#endif - png_uint_32 i; - png_colorp pal_ptr; - png_byte buf[3]; - - png_debug(1, "in png_write_PLTE"); - - if (( -#ifdef PNG_MNG_FEATURES_SUPPORTED - !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) && -#endif - num_pal == 0) || num_pal > 256) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_error(png_ptr, "Invalid number of colors in palette"); - } - else - { - png_warning(png_ptr, "Invalid number of colors in palette"); - return; - } - } - - if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR)) - { - png_warning(png_ptr, - "Ignoring request to write a PLTE chunk in grayscale PNG"); - return; - } - - png_ptr->num_palette = (png_uint_16)num_pal; - png_debug1(3, "num_palette = %d", png_ptr->num_palette); - - png_write_chunk_start(png_ptr, (png_bytep)png_PLTE, - (png_uint_32)(num_pal * 3)); -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++) - { - buf[0] = pal_ptr->red; - buf[1] = pal_ptr->green; - buf[2] = pal_ptr->blue; - png_write_chunk_data(png_ptr, buf, (png_size_t)3); - } -#else - /* This is a little slower but some buggy compilers need to do this - * instead - */ - pal_ptr=palette; - for (i = 0; i < num_pal; i++) - { - buf[0] = pal_ptr[i].red; - buf[1] = pal_ptr[i].green; - buf[2] = pal_ptr[i].blue; - png_write_chunk_data(png_ptr, buf, (png_size_t)3); - } -#endif - png_write_chunk_end(png_ptr); - png_ptr->mode |= PNG_HAVE_PLTE; -} - -/* Write an IDAT chunk */ -void /* PRIVATE */ -png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_IDAT; -#endif - - png_debug(1, "in png_write_IDAT"); - - /* Optimize the CMF field in the zlib stream. */ - /* This hack of the zlib stream is compliant to the stream specification. */ - if (!(png_ptr->mode & PNG_HAVE_IDAT) && - png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE) - { - unsigned int z_cmf = data[0]; /* zlib compression method and flags */ - if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70) - { - /* Avoid memory underflows and multiplication overflows. - * - * The conditions below are practically always satisfied; - * however, they still must be checked. - */ - if (length >= 2 && - png_ptr->height < 16384 && png_ptr->width < 16384) - { - png_uint_32 uncompressed_idat_size = png_ptr->height * - ((png_ptr->width * - png_ptr->channels * png_ptr->bit_depth + 15) >> 3); - unsigned int z_cinfo = z_cmf >> 4; - unsigned int half_z_window_size = 1 << (z_cinfo + 7); - while (uncompressed_idat_size <= half_z_window_size && - half_z_window_size >= 256) - { - z_cinfo--; - half_z_window_size >>= 1; - } - z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4); - if (data[0] != (png_byte)z_cmf) - { - data[0] = (png_byte)z_cmf; - data[1] &= 0xe0; - data[1] += (png_byte)(0x1f - ((z_cmf << 8) + data[1]) % 0x1f); - } - } - } - else - png_error(png_ptr, - "Invalid zlib compression method or flags in IDAT"); - } - - png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length); - png_ptr->mode |= PNG_HAVE_IDAT; -} - -/* Write an IEND chunk */ -void /* PRIVATE */ -png_write_IEND(png_structp png_ptr) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_IEND; -#endif - - png_debug(1, "in png_write_IEND"); - - png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL, - (png_size_t)0); - png_ptr->mode |= PNG_HAVE_IEND; -} - -#ifdef PNG_WRITE_gAMA_SUPPORTED -/* Write a gAMA chunk */ -#ifdef PNG_FLOATING_POINT_SUPPORTED -void /* PRIVATE */ -png_write_gAMA(png_structp png_ptr, double file_gamma) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_gAMA; -#endif - png_uint_32 igamma; - png_byte buf[4]; - - png_debug(1, "in png_write_gAMA"); - - /* file_gamma is saved in 1/100,000ths */ - igamma = (png_uint_32)(file_gamma * 100000.0 + 0.5); - png_save_uint_32(buf, igamma); - png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4); -} -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED -void /* PRIVATE */ -png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_gAMA; -#endif - png_byte buf[4]; - - png_debug(1, "in png_write_gAMA"); - - /* file_gamma is saved in 1/100,000ths */ - png_save_uint_32(buf, (png_uint_32)file_gamma); - png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4); -} -#endif -#endif - -#ifdef PNG_WRITE_sRGB_SUPPORTED -/* Write a sRGB chunk */ -void /* PRIVATE */ -png_write_sRGB(png_structp png_ptr, int srgb_intent) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_sRGB; -#endif - png_byte buf[1]; - - png_debug(1, "in png_write_sRGB"); - - if (srgb_intent >= PNG_sRGB_INTENT_LAST) - png_warning(png_ptr, - "Invalid sRGB rendering intent specified"); - buf[0]=(png_byte)srgb_intent; - png_write_chunk(png_ptr, (png_bytep)png_sRGB, buf, (png_size_t)1); -} -#endif - -#ifdef PNG_WRITE_iCCP_SUPPORTED -/* Write an iCCP chunk */ -void /* PRIVATE */ -png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type, - png_charp profile, int profile_len) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_iCCP; -#endif - png_size_t name_len; - png_charp new_name; - compression_state comp; - int embedded_profile_len = 0; - - png_debug(1, "in png_write_iCCP"); - - comp.num_output_ptr = 0; - comp.max_output_ptr = 0; - comp.output_ptr = NULL; - comp.input = NULL; - comp.input_len = 0; - - if ((name_len = png_check_keyword(png_ptr, name, - &new_name)) == 0) - return; - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - png_warning(png_ptr, "Unknown compression type in iCCP chunk"); - - if (profile == NULL) - profile_len = 0; - - if (profile_len > 3) - embedded_profile_len = - ((*( (png_bytep)profile ))<<24) | - ((*( (png_bytep)profile + 1))<<16) | - ((*( (png_bytep)profile + 2))<< 8) | - ((*( (png_bytep)profile + 3)) ); - - if (embedded_profile_len < 0) - { - png_warning(png_ptr, - "Embedded profile length in iCCP chunk is negative"); - png_free(png_ptr, new_name); - return; - } - - if (profile_len < embedded_profile_len) - { - png_warning(png_ptr, - "Embedded profile length too large in iCCP chunk"); - png_free(png_ptr, new_name); - return; - } - - if (profile_len > embedded_profile_len) - { - png_warning(png_ptr, - "Truncating profile to actual length in iCCP chunk"); - profile_len = embedded_profile_len; - } - - if (profile_len) - profile_len = png_text_compress(png_ptr, profile, - (png_size_t)profile_len, PNG_COMPRESSION_TYPE_BASE, &comp); - - /* Make sure we include the NULL after the name and the compression type */ - png_write_chunk_start(png_ptr, (png_bytep)png_iCCP, - (png_uint_32)(name_len + profile_len + 2)); - new_name[name_len + 1] = 0x00; - png_write_chunk_data(png_ptr, (png_bytep)new_name, - (png_size_t)(name_len + 2)); - - if (profile_len) - png_write_compressed_data_out(png_ptr, &comp); - - png_write_chunk_end(png_ptr); - png_free(png_ptr, new_name); -} -#endif - -#ifdef PNG_WRITE_sPLT_SUPPORTED -/* Write a sPLT chunk */ -void /* PRIVATE */ -png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_sPLT; -#endif - png_size_t name_len; - png_charp new_name; - png_byte entrybuf[10]; - int entry_size = (spalette->depth == 8 ? 6 : 10); - int palette_size = entry_size * spalette->nentries; - png_sPLT_entryp ep; -#ifndef PNG_POINTER_INDEXING_SUPPORTED - int i; -#endif - - png_debug(1, "in png_write_sPLT"); - - if ((name_len = png_check_keyword(png_ptr,spalette->name, &new_name))==0) - return; - - /* Make sure we include the NULL after the name */ - png_write_chunk_start(png_ptr, (png_bytep)png_sPLT, - (png_uint_32)(name_len + 2 + palette_size)); - png_write_chunk_data(png_ptr, (png_bytep)new_name, - (png_size_t)(name_len + 1)); - png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1); - - /* Loop through each palette entry, writing appropriately */ -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++) - { - if (spalette->depth == 8) - { - entrybuf[0] = (png_byte)ep->red; - entrybuf[1] = (png_byte)ep->green; - entrybuf[2] = (png_byte)ep->blue; - entrybuf[3] = (png_byte)ep->alpha; - png_save_uint_16(entrybuf + 4, ep->frequency); - } - else - { - png_save_uint_16(entrybuf + 0, ep->red); - png_save_uint_16(entrybuf + 2, ep->green); - png_save_uint_16(entrybuf + 4, ep->blue); - png_save_uint_16(entrybuf + 6, ep->alpha); - png_save_uint_16(entrybuf + 8, ep->frequency); - } - png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size); - } -#else - ep=spalette->entries; - for (i=0; i>spalette->nentries; i++) - { - if (spalette->depth == 8) - { - entrybuf[0] = (png_byte)ep[i].red; - entrybuf[1] = (png_byte)ep[i].green; - entrybuf[2] = (png_byte)ep[i].blue; - entrybuf[3] = (png_byte)ep[i].alpha; - png_save_uint_16(entrybuf + 4, ep[i].frequency); - } - else - { - png_save_uint_16(entrybuf + 0, ep[i].red); - png_save_uint_16(entrybuf + 2, ep[i].green); - png_save_uint_16(entrybuf + 4, ep[i].blue); - png_save_uint_16(entrybuf + 6, ep[i].alpha); - png_save_uint_16(entrybuf + 8, ep[i].frequency); - } - png_write_chunk_data(png_ptr, entrybuf, (png_size_t)entry_size); - } -#endif - - png_write_chunk_end(png_ptr); - png_free(png_ptr, new_name); -} -#endif - -#ifdef PNG_WRITE_sBIT_SUPPORTED -/* Write the sBIT chunk */ -void /* PRIVATE */ -png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_sBIT; -#endif - png_byte buf[4]; - png_size_t size; - - png_debug(1, "in png_write_sBIT"); - - /* Make sure we don't depend upon the order of PNG_COLOR_8 */ - if (color_type & PNG_COLOR_MASK_COLOR) - { - png_byte maxbits; - - maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 : - png_ptr->usr_bit_depth); - if (sbit->red == 0 || sbit->red > maxbits || - sbit->green == 0 || sbit->green > maxbits || - sbit->blue == 0 || sbit->blue > maxbits) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - buf[0] = sbit->red; - buf[1] = sbit->green; - buf[2] = sbit->blue; - size = 3; - } - else - { - if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - buf[0] = sbit->gray; - size = 1; - } - - if (color_type & PNG_COLOR_MASK_ALPHA) - { - if (sbit->alpha == 0 || sbit->alpha > png_ptr->usr_bit_depth) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - buf[size++] = sbit->alpha; - } - - png_write_chunk(png_ptr, (png_bytep)png_sBIT, buf, size); -} -#endif - -#ifdef PNG_WRITE_cHRM_SUPPORTED -/* Write the cHRM chunk */ -#ifdef PNG_FLOATING_POINT_SUPPORTED -void /* PRIVATE */ -png_write_cHRM(png_structp png_ptr, double white_x, double white_y, - double red_x, double red_y, double green_x, double green_y, - double blue_x, double blue_y) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_cHRM; -#endif - png_byte buf[32]; - - png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, - int_green_x, int_green_y, int_blue_x, int_blue_y; - - png_debug(1, "in png_write_cHRM"); - - int_white_x = (png_uint_32)(white_x * 100000.0 + 0.5); - int_white_y = (png_uint_32)(white_y * 100000.0 + 0.5); - int_red_x = (png_uint_32)(red_x * 100000.0 + 0.5); - int_red_y = (png_uint_32)(red_y * 100000.0 + 0.5); - int_green_x = (png_uint_32)(green_x * 100000.0 + 0.5); - int_green_y = (png_uint_32)(green_y * 100000.0 + 0.5); - int_blue_x = (png_uint_32)(blue_x * 100000.0 + 0.5); - int_blue_y = (png_uint_32)(blue_y * 100000.0 + 0.5); - -#ifdef PNG_CHECK_cHRM_SUPPORTED - if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y, - int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y)) -#endif - { - /* Each value is saved in 1/100,000ths */ - - png_save_uint_32(buf, int_white_x); - png_save_uint_32(buf + 4, int_white_y); - - png_save_uint_32(buf + 8, int_red_x); - png_save_uint_32(buf + 12, int_red_y); - - png_save_uint_32(buf + 16, int_green_x); - png_save_uint_32(buf + 20, int_green_y); - - png_save_uint_32(buf + 24, int_blue_x); - png_save_uint_32(buf + 28, int_blue_y); - - png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); - } -} -#endif -#ifdef PNG_FIXED_POINT_SUPPORTED -void /* PRIVATE */ -png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x, - png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y, - png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x, - png_fixed_point blue_y) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_cHRM; -#endif - png_byte buf[32]; - - png_debug(1, "in png_write_cHRM"); - - /* Each value is saved in 1/100,000ths */ -#ifdef PNG_CHECK_cHRM_SUPPORTED - if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y, - green_x, green_y, blue_x, blue_y)) -#endif - { - png_save_uint_32(buf, (png_uint_32)white_x); - png_save_uint_32(buf + 4, (png_uint_32)white_y); - - png_save_uint_32(buf + 8, (png_uint_32)red_x); - png_save_uint_32(buf + 12, (png_uint_32)red_y); - - png_save_uint_32(buf + 16, (png_uint_32)green_x); - png_save_uint_32(buf + 20, (png_uint_32)green_y); - - png_save_uint_32(buf + 24, (png_uint_32)blue_x); - png_save_uint_32(buf + 28, (png_uint_32)blue_y); - - png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32); - } -} -#endif -#endif - -#ifdef PNG_WRITE_tRNS_SUPPORTED -/* Write the tRNS chunk */ -void /* PRIVATE */ -png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran, - int num_trans, int color_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_tRNS; -#endif - png_byte buf[6]; - - png_debug(1, "in png_write_tRNS"); - - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette) - { - png_warning(png_ptr, "Invalid number of transparent colors specified"); - return; - } - /* Write the chunk out as it is */ - png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans, - (png_size_t)num_trans); - } - else if (color_type == PNG_COLOR_TYPE_GRAY) - { - /* One 16 bit value */ - if (tran->gray >= (1 << png_ptr->bit_depth)) - { - png_warning(png_ptr, - "Ignoring attempt to write tRNS chunk out-of-range for bit_depth"); - return; - } - png_save_uint_16(buf, tran->gray); - png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)2); - } - else if (color_type == PNG_COLOR_TYPE_RGB) - { - /* Three 16 bit values */ - png_save_uint_16(buf, tran->red); - png_save_uint_16(buf + 2, tran->green); - png_save_uint_16(buf + 4, tran->blue); - if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4])) - { - png_warning(png_ptr, - "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8"); - return; - } - png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)6); - } - else - { - png_warning(png_ptr, "Can't write tRNS with an alpha channel"); - } -} -#endif - -#ifdef PNG_WRITE_bKGD_SUPPORTED -/* Write the background chunk */ -void /* PRIVATE */ -png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_bKGD; -#endif - png_byte buf[6]; - - png_debug(1, "in png_write_bKGD"); - - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - if ( -#ifdef PNG_MNG_FEATURES_SUPPORTED - (png_ptr->num_palette || - (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) && -#endif - back->index >= png_ptr->num_palette) - { - png_warning(png_ptr, "Invalid background palette index"); - return; - } - buf[0] = back->index; - png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)1); - } - else if (color_type & PNG_COLOR_MASK_COLOR) - { - png_save_uint_16(buf, back->red); - png_save_uint_16(buf + 2, back->green); - png_save_uint_16(buf + 4, back->blue); - if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4])) - { - png_warning(png_ptr, - "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8"); - return; - } - png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)6); - } - else - { - if (back->gray >= (1 << png_ptr->bit_depth)) - { - png_warning(png_ptr, - "Ignoring attempt to write bKGD chunk out-of-range for bit_depth"); - return; - } - png_save_uint_16(buf, back->gray); - png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)2); - } -} -#endif - -#ifdef PNG_WRITE_hIST_SUPPORTED -/* Write the histogram */ -void /* PRIVATE */ -png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_hIST; -#endif - int i; - png_byte buf[3]; - - png_debug(1, "in png_write_hIST"); - - if (num_hist > (int)png_ptr->num_palette) - { - png_debug2(3, "num_hist = %d, num_palette = %d", num_hist, - png_ptr->num_palette); - png_warning(png_ptr, "Invalid number of histogram entries specified"); - return; - } - - png_write_chunk_start(png_ptr, (png_bytep)png_hIST, - (png_uint_32)(num_hist * 2)); - for (i = 0; i < num_hist; i++) - { - png_save_uint_16(buf, hist[i]); - png_write_chunk_data(png_ptr, buf, (png_size_t)2); - } - png_write_chunk_end(png_ptr); -} -#endif - -#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ - defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) -/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification, - * and if invalid, correct the keyword rather than discarding the entire - * chunk. The PNG 1.0 specification requires keywords 1-79 characters in - * length, forbids leading or trailing whitespace, multiple internal spaces, - * and the non-break space (0x80) from ISO 8859-1. Returns keyword length. - * - * The new_key is allocated to hold the corrected keyword and must be freed - * by the calling routine. This avoids problems with trying to write to - * static keywords without having to have duplicate copies of the strings. - */ -png_size_t /* PRIVATE */ -png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key) -{ - png_size_t key_len; - png_charp kp, dp; - int kflag; - int kwarn=0; - - png_debug(1, "in png_check_keyword"); - - *new_key = NULL; - - if (key == NULL || (key_len = png_strlen(key)) == 0) - { - png_warning(png_ptr, "zero length keyword"); - return ((png_size_t)0); - } - - png_debug1(2, "Keyword to be checked is '%s'", key); - - *new_key = (png_charp)png_malloc_warn(png_ptr, (png_uint_32)(key_len + 2)); - if (*new_key == NULL) - { - png_warning(png_ptr, "Out of memory while procesing keyword"); - return ((png_size_t)0); - } - - /* Replace non-printing characters with a blank and print a warning */ - for (kp = key, dp = *new_key; *kp != '\0'; kp++, dp++) - { - if ((png_byte)*kp < 0x20 || - ((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1)) - { -#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE) - char msg[40]; - - png_snprintf(msg, 40, - "invalid keyword character 0x%02X", (png_byte)*kp); - png_warning(png_ptr, msg); -#else - png_warning(png_ptr, "invalid character in keyword"); -#endif - *dp = ' '; - } - else - { - *dp = *kp; - } - } - *dp = '\0'; - - /* Remove any trailing white space. */ - kp = *new_key + key_len - 1; - if (*kp == ' ') - { - png_warning(png_ptr, "trailing spaces removed from keyword"); - - while (*kp == ' ') - { - *(kp--) = '\0'; - key_len--; - } - } - - /* Remove any leading white space. */ - kp = *new_key; - if (*kp == ' ') - { - png_warning(png_ptr, "leading spaces removed from keyword"); - - while (*kp == ' ') - { - kp++; - key_len--; - } - } - - png_debug1(2, "Checking for multiple internal spaces in '%s'", kp); - - /* Remove multiple internal spaces. */ - for (kflag = 0, dp = *new_key; *kp != '\0'; kp++) - { - if (*kp == ' ' && kflag == 0) - { - *(dp++) = *kp; - kflag = 1; - } - else if (*kp == ' ') - { - key_len--; - kwarn=1; - } - else - { - *(dp++) = *kp; - kflag = 0; - } - } - *dp = '\0'; - if (kwarn) - png_warning(png_ptr, "extra interior spaces removed from keyword"); - - if (key_len == 0) - { - png_free(png_ptr, *new_key); - *new_key=NULL; - png_warning(png_ptr, "Zero length keyword"); - } - - if (key_len > 79) - { - png_warning(png_ptr, "keyword length must be 1 - 79 characters"); - (*new_key)[79] = '\0'; - key_len = 79; - } - - return (key_len); -} -#endif - -#ifdef PNG_WRITE_tEXt_SUPPORTED -/* Write a tEXt chunk */ -void /* PRIVATE */ -png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text, - png_size_t text_len) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_tEXt; -#endif - png_size_t key_len; - png_charp new_key; - - png_debug(1, "in png_write_tEXt"); - - if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0) - return; - - if (text == NULL || *text == '\0') - text_len = 0; - else - text_len = png_strlen(text); - - /* Make sure we include the 0 after the key */ - png_write_chunk_start(png_ptr, (png_bytep)png_tEXt, - (png_uint_32)(key_len + text_len + 1)); - /* - * We leave it to the application to meet PNG-1.0 requirements on the - * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of - * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them. - * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG. - */ - png_write_chunk_data(png_ptr, (png_bytep)new_key, - (png_size_t)(key_len + 1)); - if (text_len) - png_write_chunk_data(png_ptr, (png_bytep)text, (png_size_t)text_len); - - png_write_chunk_end(png_ptr); - png_free(png_ptr, new_key); -} -#endif - -#ifdef PNG_WRITE_zTXt_SUPPORTED -/* Write a compressed text chunk */ -void /* PRIVATE */ -png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text, - png_size_t text_len, int compression) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_zTXt; -#endif - png_size_t key_len; - char buf[1]; - png_charp new_key; - compression_state comp; - - png_debug(1, "in png_write_zTXt"); - - comp.num_output_ptr = 0; - comp.max_output_ptr = 0; - comp.output_ptr = NULL; - comp.input = NULL; - comp.input_len = 0; - - if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0) - { - png_free(png_ptr, new_key); - return; - } - - if (text == NULL || *text == '\0' || compression==PNG_TEXT_COMPRESSION_NONE) - { - png_write_tEXt(png_ptr, new_key, text, (png_size_t)0); - png_free(png_ptr, new_key); - return; - } - - text_len = png_strlen(text); - - /* Compute the compressed data; do it now for the length */ - text_len = png_text_compress(png_ptr, text, text_len, compression, - &comp); - - /* Write start of chunk */ - png_write_chunk_start(png_ptr, (png_bytep)png_zTXt, - (png_uint_32)(key_len+text_len + 2)); - /* Write key */ - png_write_chunk_data(png_ptr, (png_bytep)new_key, - (png_size_t)(key_len + 1)); - png_free(png_ptr, new_key); - - buf[0] = (png_byte)compression; - /* Write compression */ - png_write_chunk_data(png_ptr, (png_bytep)buf, (png_size_t)1); - /* Write the compressed data */ - png_write_compressed_data_out(png_ptr, &comp); - - /* Close the chunk */ - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_iTXt_SUPPORTED -/* Write an iTXt chunk */ -void /* PRIVATE */ -png_write_iTXt(png_structp png_ptr, int compression, png_charp key, - png_charp lang, png_charp lang_key, png_charp text) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_iTXt; -#endif - png_size_t lang_len, key_len, lang_key_len, text_len; - png_charp new_lang; - png_charp new_key = NULL; - png_byte cbuf[2]; - compression_state comp; - - png_debug(1, "in png_write_iTXt"); - - comp.num_output_ptr = 0; - comp.max_output_ptr = 0; - comp.output_ptr = NULL; - comp.input = NULL; - - if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0) - return; - - if ((lang_len = png_check_keyword(png_ptr, lang, &new_lang))==0) - { - png_warning(png_ptr, "Empty language field in iTXt chunk"); - new_lang = NULL; - lang_len = 0; - } - - if (lang_key == NULL) - lang_key_len = 0; - else - lang_key_len = png_strlen(lang_key); - - if (text == NULL) - text_len = 0; - else - text_len = png_strlen(text); - - /* Compute the compressed data; do it now for the length */ - text_len = png_text_compress(png_ptr, text, text_len, compression-2, - &comp); - - - /* Make sure we include the compression flag, the compression byte, - * and the NULs after the key, lang, and lang_key parts */ - - png_write_chunk_start(png_ptr, (png_bytep)png_iTXt, - (png_uint_32)( - 5 /* comp byte, comp flag, terminators for key, lang and lang_key */ - + key_len - + lang_len - + lang_key_len - + text_len)); - - /* We leave it to the application to meet PNG-1.0 requirements on the - * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of - * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them. - * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG. - */ - png_write_chunk_data(png_ptr, (png_bytep)new_key, - (png_size_t)(key_len + 1)); - - /* Set the compression flag */ - if (compression == PNG_ITXT_COMPRESSION_NONE || \ - compression == PNG_TEXT_COMPRESSION_NONE) - cbuf[0] = 0; - else /* compression == PNG_ITXT_COMPRESSION_zTXt */ - cbuf[0] = 1; - /* Set the compression method */ - cbuf[1] = 0; - png_write_chunk_data(png_ptr, cbuf, (png_size_t)2); - - cbuf[0] = 0; - png_write_chunk_data(png_ptr, (new_lang ? (png_bytep)new_lang : cbuf), - (png_size_t)(lang_len + 1)); - png_write_chunk_data(png_ptr, (lang_key ? (png_bytep)lang_key : cbuf), - (png_size_t)(lang_key_len + 1)); - png_write_compressed_data_out(png_ptr, &comp); - - png_write_chunk_end(png_ptr); - png_free(png_ptr, new_key); - png_free(png_ptr, new_lang); -} -#endif - -#ifdef PNG_WRITE_oFFs_SUPPORTED -/* Write the oFFs chunk */ -void /* PRIVATE */ -png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset, - int unit_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_oFFs; -#endif - png_byte buf[9]; - - png_debug(1, "in png_write_oFFs"); - - if (unit_type >= PNG_OFFSET_LAST) - png_warning(png_ptr, "Unrecognized unit type for oFFs chunk"); - - png_save_int_32(buf, x_offset); - png_save_int_32(buf + 4, y_offset); - buf[8] = (png_byte)unit_type; - - png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9); -} -#endif -#ifdef PNG_WRITE_pCAL_SUPPORTED -/* Write the pCAL chunk (described in the PNG extensions document) */ -void /* PRIVATE */ -png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0, - png_int_32 X1, int type, int nparams, png_charp units, png_charpp params) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_pCAL; -#endif - png_size_t purpose_len, units_len, total_len; - png_uint_32p params_len; - png_byte buf[10]; - png_charp new_purpose; - int i; - - png_debug1(1, "in png_write_pCAL (%d parameters)", nparams); - - if (type >= PNG_EQUATION_LAST) - png_warning(png_ptr, "Unrecognized equation type for pCAL chunk"); - - purpose_len = png_check_keyword(png_ptr, purpose, &new_purpose) + 1; - png_debug1(3, "pCAL purpose length = %d", (int)purpose_len); - units_len = png_strlen(units) + (nparams == 0 ? 0 : 1); - png_debug1(3, "pCAL units length = %d", (int)units_len); - total_len = purpose_len + units_len + 10; - - params_len = (png_uint_32p)png_malloc(png_ptr, - (png_uint_32)(nparams * png_sizeof(png_uint_32))); - - /* Find the length of each parameter, making sure we don't count the - null terminator for the last parameter. */ - for (i = 0; i < nparams; i++) - { - params_len[i] = png_strlen(params[i]) + (i == nparams - 1 ? 0 : 1); - png_debug2(3, "pCAL parameter %d length = %lu", i, - (unsigned long) params_len[i]); - total_len += (png_size_t)params_len[i]; - } - - png_debug1(3, "pCAL total length = %d", (int)total_len); - png_write_chunk_start(png_ptr, (png_bytep)png_pCAL, (png_uint_32)total_len); - png_write_chunk_data(png_ptr, (png_bytep)new_purpose, - (png_size_t)purpose_len); - png_save_int_32(buf, X0); - png_save_int_32(buf + 4, X1); - buf[8] = (png_byte)type; - buf[9] = (png_byte)nparams; - png_write_chunk_data(png_ptr, buf, (png_size_t)10); - png_write_chunk_data(png_ptr, (png_bytep)units, (png_size_t)units_len); - - png_free(png_ptr, new_purpose); - - for (i = 0; i < nparams; i++) - { - png_write_chunk_data(png_ptr, (png_bytep)params[i], - (png_size_t)params_len[i]); - } - - png_free(png_ptr, params_len); - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_sCAL_SUPPORTED -/* Write the sCAL chunk */ -#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED) -void /* PRIVATE */ -png_write_sCAL(png_structp png_ptr, int unit, double width, double height) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_sCAL; -#endif - char buf[64]; - png_size_t total_len; - - png_debug(1, "in png_write_sCAL"); - - buf[0] = (char)unit; -#ifdef _WIN32_WCE -/* sprintf() function is not supported on WindowsCE */ - { - wchar_t wc_buf[32]; - size_t wc_len; - swprintf(wc_buf, TEXT("%12.12e"), width); - wc_len = wcslen(wc_buf); - WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + 1, wc_len, NULL, - NULL); - total_len = wc_len + 2; - swprintf(wc_buf, TEXT("%12.12e"), height); - wc_len = wcslen(wc_buf); - WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + total_len, wc_len, - NULL, NULL); - total_len += wc_len; - } -#else - png_snprintf(buf + 1, 63, "%12.12e", width); - total_len = 1 + png_strlen(buf + 1) + 1; - png_snprintf(buf + total_len, 64-total_len, "%12.12e", height); - total_len += png_strlen(buf + total_len); -#endif - - png_debug1(3, "sCAL total length = %u", (unsigned int)total_len); - png_write_chunk(png_ptr, (png_bytep)png_sCAL, (png_bytep)buf, total_len); -} -#else -#ifdef PNG_FIXED_POINT_SUPPORTED -void /* PRIVATE */ -png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width, - png_charp height) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_sCAL; -#endif - png_byte buf[64]; - png_size_t wlen, hlen, total_len; - - png_debug(1, "in png_write_sCAL_s"); - - wlen = png_strlen(width); - hlen = png_strlen(height); - total_len = wlen + hlen + 2; - if (total_len > 64) - { - png_warning(png_ptr, "Can't write sCAL (buffer too small)"); - return; - } - - buf[0] = (png_byte)unit; - png_memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */ - png_memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */ - - png_debug1(3, "sCAL total length = %u", (unsigned int)total_len); - png_write_chunk(png_ptr, (png_bytep)png_sCAL, buf, total_len); -} -#endif -#endif -#endif - -#ifdef PNG_WRITE_pHYs_SUPPORTED -/* Write the pHYs chunk */ -void /* PRIVATE */ -png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit, - png_uint_32 y_pixels_per_unit, - int unit_type) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_pHYs; -#endif - png_byte buf[9]; - - png_debug(1, "in png_write_pHYs"); - - if (unit_type >= PNG_RESOLUTION_LAST) - png_warning(png_ptr, "Unrecognized unit type for pHYs chunk"); - - png_save_uint_32(buf, x_pixels_per_unit); - png_save_uint_32(buf + 4, y_pixels_per_unit); - buf[8] = (png_byte)unit_type; - - png_write_chunk(png_ptr, (png_bytep)png_pHYs, buf, (png_size_t)9); -} -#endif - -#ifdef PNG_WRITE_tIME_SUPPORTED -/* Write the tIME chunk. Use either png_convert_from_struct_tm() - * or png_convert_from_time_t(), or fill in the structure yourself. - */ -void /* PRIVATE */ -png_write_tIME(png_structp png_ptr, png_timep mod_time) -{ -#ifdef PNG_USE_LOCAL_ARRAYS - PNG_tIME; -#endif - png_byte buf[7]; - - png_debug(1, "in png_write_tIME"); - - if (mod_time->month > 12 || mod_time->month < 1 || - mod_time->day > 31 || mod_time->day < 1 || - mod_time->hour > 23 || mod_time->second > 60) - { - png_warning(png_ptr, "Invalid time specified for tIME chunk"); - return; - } - - png_save_uint_16(buf, mod_time->year); - buf[2] = mod_time->month; - buf[3] = mod_time->day; - buf[4] = mod_time->hour; - buf[5] = mod_time->minute; - buf[6] = mod_time->second; - - png_write_chunk(png_ptr, (png_bytep)png_tIME, buf, (png_size_t)7); -} -#endif - -/* Initializes the row writing capability of libpng */ -void /* PRIVATE */ -png_write_start_row(png_structp png_ptr) -{ -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif - - png_size_t buf_size; - - png_debug(1, "in png_write_start_row"); - - buf_size = (png_size_t)(PNG_ROWBYTES( - png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1); - - /* Set up row buffer */ - png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, - (png_uint_32)buf_size); - png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE; - -#ifdef PNG_WRITE_FILTER_SUPPORTED - /* Set up filtering buffer, if using this filter */ - if (png_ptr->do_filter & PNG_FILTER_SUB) - { - png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(png_ptr->rowbytes + 1)); - png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB; - } - - /* We only need to keep the previous row if we are using one of these. */ - if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH)) - { - /* Set up previous row buffer */ - png_ptr->prev_row = (png_bytep)png_calloc(png_ptr, - (png_uint_32)buf_size); - - if (png_ptr->do_filter & PNG_FILTER_UP) - { - png_ptr->up_row = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(png_ptr->rowbytes + 1)); - png_ptr->up_row[0] = PNG_FILTER_VALUE_UP; - } - - if (png_ptr->do_filter & PNG_FILTER_AVG) - { - png_ptr->avg_row = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(png_ptr->rowbytes + 1)); - png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG; - } - - if (png_ptr->do_filter & PNG_FILTER_PAETH) - { - png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr, - (png_uint_32)(png_ptr->rowbytes + 1)); - png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH; - } - } -#endif /* PNG_WRITE_FILTER_SUPPORTED */ - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced, we need to set up width and height of pass */ - if (png_ptr->interlaced) - { - if (!(png_ptr->transformations & PNG_INTERLACE)) - { - png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - - png_pass_ystart[0]) / png_pass_yinc[0]; - png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 - - png_pass_start[0]) / png_pass_inc[0]; - } - else - { - png_ptr->num_rows = png_ptr->height; - png_ptr->usr_width = png_ptr->width; - } - } - else -#endif - { - png_ptr->num_rows = png_ptr->height; - png_ptr->usr_width = png_ptr->width; - } - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - png_ptr->zstream.next_out = png_ptr->zbuf; -} - -/* Internal use only. Called when finished processing a row of data. */ -void /* PRIVATE */ -png_write_finish_row(png_structp png_ptr) -{ -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - int png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif - - int ret; - - png_debug(1, "in png_write_finish_row"); - - /* Next row */ - png_ptr->row_number++; - - /* See if we are done */ - if (png_ptr->row_number < png_ptr->num_rows) - return; - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced, go to next pass */ - if (png_ptr->interlaced) - { - png_ptr->row_number = 0; - if (png_ptr->transformations & PNG_INTERLACE) - { - png_ptr->pass++; - } - else - { - /* Loop until we find a non-zero width or height pass */ - do - { - png_ptr->pass++; - if (png_ptr->pass >= 7) - break; - png_ptr->usr_width = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - if (png_ptr->transformations & PNG_INTERLACE) - break; - } while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0); - - } - - /* Reset the row above the image for the next pass */ - if (png_ptr->pass < 7) - { - if (png_ptr->prev_row != NULL) - png_memset(png_ptr->prev_row, 0, - (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels* - png_ptr->usr_bit_depth, png_ptr->width)) + 1); - return; - } - } -#endif - - /* If we get here, we've just written the last row, so we need - to flush the compressor */ - do - { - /* Tell the compressor we are done */ - ret = deflate(&png_ptr->zstream, Z_FINISH); - /* Check for an error */ - if (ret == Z_OK) - { - /* Check to see if we need more room */ - if (!(png_ptr->zstream.avail_out)) - { - png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - } - } - else if (ret != Z_STREAM_END) - { - if (png_ptr->zstream.msg != NULL) - png_error(png_ptr, png_ptr->zstream.msg); - else - png_error(png_ptr, "zlib error"); - } - } while (ret != Z_STREAM_END); - - /* Write any extra space */ - if (png_ptr->zstream.avail_out < png_ptr->zbuf_size) - { - png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size - - png_ptr->zstream.avail_out); - } - - deflateReset(&png_ptr->zstream); - png_ptr->zstream.data_type = Z_BINARY; -} - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED -/* Pick out the correct pixels for the interlace pass. - * The basic idea here is to go through the row with a source - * pointer and a destination pointer (sp and dp), and copy the - * correct pixels for the pass. As the row gets compacted, - * sp will always be >= dp, so we should never overwrite anything. - * See the default: case for the easiest code to understand. - */ -void /* PRIVATE */ -png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass) -{ - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - int png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - png_debug(1, "in png_do_write_interlace"); - - /* We don't have to do anything on the last pass (6) */ -#ifdef PNG_USELESS_TESTS_SUPPORTED - if (row != NULL && row_info != NULL && pass < 6) -#else - if (pass < 6) -#endif - { - /* Each pixel depth is handled separately */ - switch (row_info->pixel_depth) - { - case 1: - { - png_bytep sp; - png_bytep dp; - int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - d = 0; - shift = 7; - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 3); - value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01; - d |= (value << shift); - - if (shift == 0) - { - shift = 7; - *dp++ = (png_byte)d; - d = 0; - } - else - shift--; - - } - if (shift != 7) - *dp = (png_byte)d; - break; - } - case 2: - { - png_bytep sp; - png_bytep dp; - int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - shift = 6; - d = 0; - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 2); - value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03; - d |= (value << shift); - - if (shift == 0) - { - shift = 6; - *dp++ = (png_byte)d; - d = 0; - } - else - shift -= 2; - } - if (shift != 6) - *dp = (png_byte)d; - break; - } - case 4: - { - png_bytep sp; - png_bytep dp; - int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - shift = 4; - d = 0; - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 1); - value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f; - d |= (value << shift); - - if (shift == 0) - { - shift = 4; - *dp++ = (png_byte)d; - d = 0; - } - else - shift -= 4; - } - if (shift != 4) - *dp = (png_byte)d; - break; - } - default: - { - png_bytep sp; - png_bytep dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - png_size_t pixel_bytes; - - /* Start at the beginning */ - dp = row; - /* Find out how many bytes each pixel takes up */ - pixel_bytes = (row_info->pixel_depth >> 3); - /* Loop through the row, only looking at the pixels that - matter */ - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - /* Find out where the original pixel is */ - sp = row + (png_size_t)i * pixel_bytes; - /* Move the pixel */ - if (dp != sp) - png_memcpy(dp, sp, pixel_bytes); - /* Next pixel */ - dp += pixel_bytes; - } - break; - } - } - /* Set new row width */ - row_info->width = (row_info->width + - png_pass_inc[pass] - 1 - - png_pass_start[pass]) / - png_pass_inc[pass]; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_info->width); - } -} -#endif - -/* This filters the row, chooses which filter to use, if it has not already - * been specified by the application, and then writes the row out with the - * chosen filter. - */ -#define PNG_MAXSUM (((png_uint_32)(-1)) >> 1) -#define PNG_HISHIFT 10 -#define PNG_LOMASK ((png_uint_32)0xffffL) -#define PNG_HIMASK ((png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT)) -void /* PRIVATE */ -png_write_find_filter(png_structp png_ptr, png_row_infop row_info) -{ - png_bytep best_row; -#ifdef PNG_WRITE_FILTER_SUPPORTED - png_bytep prev_row, row_buf; - png_uint_32 mins, bpp; - png_byte filter_to_do = png_ptr->do_filter; - png_uint_32 row_bytes = row_info->rowbytes; -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - int num_p_filters = (int)png_ptr->num_prev_filters; -#endif - - png_debug(1, "in png_write_find_filter"); - -#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS) - { - /* These will never be selected so we need not test them. */ - filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH); - } -#endif - - /* Find out how many bytes offset each pixel is */ - bpp = (row_info->pixel_depth + 7) >> 3; - - prev_row = png_ptr->prev_row; -#endif - best_row = png_ptr->row_buf; -#ifdef PNG_WRITE_FILTER_SUPPORTED - row_buf = best_row; - mins = PNG_MAXSUM; - - /* The prediction method we use is to find which method provides the - * smallest value when summing the absolute values of the distances - * from zero, using anything >= 128 as negative numbers. This is known - * as the "minimum sum of absolute differences" heuristic. Other - * heuristics are the "weighted minimum sum of absolute differences" - * (experimental and can in theory improve compression), and the "zlib - * predictive" method (not implemented yet), which does test compressions - * of lines using different filter methods, and then chooses the - * (series of) filter(s) that give minimum compressed data size (VERY - * computationally expensive). - * - * GRR 980525: consider also - * (1) minimum sum of absolute differences from running average (i.e., - * keep running sum of non-absolute differences & count of bytes) - * [track dispersion, too? restart average if dispersion too large?] - * (1b) minimum sum of absolute differences from sliding average, probably - * with window size <= deflate window (usually 32K) - * (2) minimum sum of squared differences from zero or running average - * (i.e., ~ root-mean-square approach) - */ - - - /* We don't need to test the 'no filter' case if this is the only filter - * that has been chosen, as it doesn't actually do anything to the data. - */ - if ((filter_to_do & PNG_FILTER_NONE) && - filter_to_do != PNG_FILTER_NONE) - { - png_bytep rp; - png_uint_32 sum = 0; - png_uint_32 i; - int v; - - for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++) - { - v = *rp; - sum += (v < 128) ? v : 256 - v; - } - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - png_uint_32 sumhi, sumlo; - int j; - sumlo = sum & PNG_LOMASK; - sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; /* Gives us some footroom */ - - /* Reduce the sum if we match any of the previous rows */ - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE) - { - sumlo = (sumlo * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - sumhi = (sumhi * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - /* Factor in the cost of this filter (this is here for completeness, - * but it makes no sense to have a "cost" for the NONE filter, as - * it has the minimum possible computational cost - none). - */ - sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >> - PNG_COST_SHIFT; - sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >> - PNG_COST_SHIFT; - - if (sumhi > PNG_HIMASK) - sum = PNG_MAXSUM; - else - sum = (sumhi << PNG_HISHIFT) + sumlo; - } -#endif - mins = sum; - } - - /* Sub filter */ - if (filter_to_do == PNG_FILTER_SUB) - /* It's the only filter so no testing is needed */ - { - png_bytep rp, lp, dp; - png_uint_32 i; - for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp; - i++, rp++, dp++) - { - *dp = *rp; - } - for (lp = row_buf + 1; i < row_bytes; - i++, rp++, lp++, dp++) - { - *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff); - } - best_row = png_ptr->sub_row; - } - - else if (filter_to_do & PNG_FILTER_SUB) - { - png_bytep rp, dp, lp; - png_uint_32 sum = 0, lmins = mins; - png_uint_32 i; - int v; - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - /* We temporarily increase the "minimum sum" by the factor we - * would reduce the sum of this filter, so that we can do the - * early exit comparison without scaling the sum each time. - */ - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 lmhi, lmlo; - lmlo = lmins & PNG_LOMASK; - lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB) - { - lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >> - PNG_COST_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >> - PNG_COST_SHIFT; - - if (lmhi > PNG_HIMASK) - lmins = PNG_MAXSUM; - else - lmins = (lmhi << PNG_HISHIFT) + lmlo; - } -#endif - - for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp; - i++, rp++, dp++) - { - v = *dp = *rp; - - sum += (v < 128) ? v : 256 - v; - } - for (lp = row_buf + 1; i < row_bytes; - i++, rp++, lp++, dp++) - { - v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff); - - sum += (v < 128) ? v : 256 - v; - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 sumhi, sumlo; - sumlo = sum & PNG_LOMASK; - sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB) - { - sumlo = (sumlo * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - sumhi = (sumhi * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - sumlo = (sumlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >> - PNG_COST_SHIFT; - sumhi = (sumhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >> - PNG_COST_SHIFT; - - if (sumhi > PNG_HIMASK) - sum = PNG_MAXSUM; - else - sum = (sumhi << PNG_HISHIFT) + sumlo; - } -#endif - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->sub_row; - } - } - - /* Up filter */ - if (filter_to_do == PNG_FILTER_UP) - { - png_bytep rp, dp, pp; - png_uint_32 i; - - for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1, - pp = prev_row + 1; i < row_bytes; - i++, rp++, pp++, dp++) - { - *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff); - } - best_row = png_ptr->up_row; - } - - else if (filter_to_do & PNG_FILTER_UP) - { - png_bytep rp, dp, pp; - png_uint_32 sum = 0, lmins = mins; - png_uint_32 i; - int v; - - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 lmhi, lmlo; - lmlo = lmins & PNG_LOMASK; - lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP) - { - lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >> - PNG_COST_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >> - PNG_COST_SHIFT; - - if (lmhi > PNG_HIMASK) - lmins = PNG_MAXSUM; - else - lmins = (lmhi << PNG_HISHIFT) + lmlo; - } -#endif - - for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1, - pp = prev_row + 1; i < row_bytes; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); - - sum += (v < 128) ? v : 256 - v; - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 sumhi, sumlo; - sumlo = sum & PNG_LOMASK; - sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP) - { - sumlo = (sumlo * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - sumhi = (sumhi * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >> - PNG_COST_SHIFT; - sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >> - PNG_COST_SHIFT; - - if (sumhi > PNG_HIMASK) - sum = PNG_MAXSUM; - else - sum = (sumhi << PNG_HISHIFT) + sumlo; - } -#endif - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->up_row; - } - } - - /* Avg filter */ - if (filter_to_do == PNG_FILTER_AVG) - { - png_bytep rp, dp, pp, lp; - png_uint_32 i; - for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1, - pp = prev_row + 1; i < bpp; i++) - { - *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff); - } - for (lp = row_buf + 1; i < row_bytes; i++) - { - *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) - & 0xff); - } - best_row = png_ptr->avg_row; - } - - else if (filter_to_do & PNG_FILTER_AVG) - { - png_bytep rp, dp, pp, lp; - png_uint_32 sum = 0, lmins = mins; - png_uint_32 i; - int v; - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 lmhi, lmlo; - lmlo = lmins & PNG_LOMASK; - lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG) - { - lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >> - PNG_COST_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >> - PNG_COST_SHIFT; - - if (lmhi > PNG_HIMASK) - lmins = PNG_MAXSUM; - else - lmins = (lmhi << PNG_HISHIFT) + lmlo; - } -#endif - - for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1, - pp = prev_row + 1; i < bpp; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff); - - sum += (v < 128) ? v : 256 - v; - } - for (lp = row_buf + 1; i < row_bytes; i++) - { - v = *dp++ = - (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff); - - sum += (v < 128) ? v : 256 - v; - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 sumhi, sumlo; - sumlo = sum & PNG_LOMASK; - sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE) - { - sumlo = (sumlo * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - sumhi = (sumhi * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >> - PNG_COST_SHIFT; - sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >> - PNG_COST_SHIFT; - - if (sumhi > PNG_HIMASK) - sum = PNG_MAXSUM; - else - sum = (sumhi << PNG_HISHIFT) + sumlo; - } -#endif - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->avg_row; - } - } - - /* Paeth filter */ - if (filter_to_do == PNG_FILTER_PAETH) - { - png_bytep rp, dp, pp, cp, lp; - png_uint_32 i; - for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1, - pp = prev_row + 1; i < bpp; i++) - { - *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); - } - - for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++) - { - int a, b, c, pa, pb, pc, p; - - b = *pp++; - c = *cp++; - a = *lp++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c; - - *dp++ = (png_byte)(((int)*rp++ - p) & 0xff); - } - best_row = png_ptr->paeth_row; - } - - else if (filter_to_do & PNG_FILTER_PAETH) - { - png_bytep rp, dp, pp, cp, lp; - png_uint_32 sum = 0, lmins = mins; - png_uint_32 i; - int v; - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 lmhi, lmlo; - lmlo = lmins & PNG_LOMASK; - lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH) - { - lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >> - PNG_COST_SHIFT; - lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >> - PNG_COST_SHIFT; - - if (lmhi > PNG_HIMASK) - lmins = PNG_MAXSUM; - else - lmins = (lmhi << PNG_HISHIFT) + lmlo; - } -#endif - - for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1, - pp = prev_row + 1; i < bpp; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); - - sum += (v < 128) ? v : 256 - v; - } - - for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++) - { - int a, b, c, pa, pb, pc, p; - - b = *pp++; - c = *cp++; - a = *lp++; - -#ifndef PNG_SLOW_PAETH - p = b - c; - pc = a - c; -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c; -#else /* PNG_SLOW_PAETH */ - p = a + b - c; - pa = abs(p - a); - pb = abs(p - b); - pc = abs(p - c); - if (pa <= pb && pa <= pc) - p = a; - else if (pb <= pc) - p = b; - else - p = c; -#endif /* PNG_SLOW_PAETH */ - - v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff); - - sum += (v < 128) ? v : 256 - v; - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED) - { - int j; - png_uint_32 sumhi, sumlo; - sumlo = sum & PNG_LOMASK; - sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; - - for (j = 0; j < num_p_filters; j++) - { - if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH) - { - sumlo = (sumlo * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - sumhi = (sumhi * png_ptr->filter_weights[j]) >> - PNG_WEIGHT_SHIFT; - } - } - - sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >> - PNG_COST_SHIFT; - sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >> - PNG_COST_SHIFT; - - if (sumhi > PNG_HIMASK) - sum = PNG_MAXSUM; - else - sum = (sumhi << PNG_HISHIFT) + sumlo; - } -#endif - - if (sum < mins) - { - best_row = png_ptr->paeth_row; - } - } -#endif /* PNG_WRITE_FILTER_SUPPORTED */ - /* Do the actual writing of the filtered row data from the chosen filter. */ - - png_write_filtered_row(png_ptr, best_row); - -#ifdef PNG_WRITE_FILTER_SUPPORTED -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED - /* Save the type of filter we picked this time for future calculations */ - if (png_ptr->num_prev_filters > 0) - { - int j; - for (j = 1; j < num_p_filters; j++) - { - png_ptr->prev_filters[j] = png_ptr->prev_filters[j - 1]; - } - png_ptr->prev_filters[j] = best_row[0]; - } -#endif -#endif /* PNG_WRITE_FILTER_SUPPORTED */ -} - - -/* Do the actual writing of a previously filtered row. */ -void /* PRIVATE */ -png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row) -{ - png_debug(1, "in png_write_filtered_row"); - - png_debug1(2, "filter = %d", filtered_row[0]); - /* Set up the zlib input buffer */ - - png_ptr->zstream.next_in = filtered_row; - png_ptr->zstream.avail_in = (uInt)png_ptr->row_info.rowbytes + 1; - /* Repeat until we have compressed all the data */ - do - { - int ret; /* Return of zlib */ - - /* Compress the data */ - ret = deflate(&png_ptr->zstream, Z_NO_FLUSH); - /* Check for compression errors */ - if (ret != Z_OK) - { - if (png_ptr->zstream.msg != NULL) - png_error(png_ptr, png_ptr->zstream.msg); - else - png_error(png_ptr, "zlib error"); - } - - /* See if it is time to write another IDAT */ - if (!(png_ptr->zstream.avail_out)) - { - /* Write the IDAT and reset the zlib output buffer */ - png_write_IDAT(png_ptr, png_ptr->zbuf, png_ptr->zbuf_size); - png_ptr->zstream.next_out = png_ptr->zbuf; - png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size; - } - /* Repeat until all data has been compressed */ - } while (png_ptr->zstream.avail_in); - - /* Swap the current and previous rows */ - if (png_ptr->prev_row != NULL) - { - png_bytep tptr; - - tptr = png_ptr->prev_row; - png_ptr->prev_row = png_ptr->row_buf; - png_ptr->row_buf = tptr; - } - - /* Finish row - updates counters and flushes zlib if last row */ - png_write_finish_row(png_ptr); - -#ifdef PNG_WRITE_FLUSH_SUPPORTED - png_ptr->flush_rows++; - - if (png_ptr->flush_dist > 0 && - png_ptr->flush_rows >= png_ptr->flush_dist) - { - png_write_flush(png_ptr); - } -#endif -} -#endif /* PNG_WRITE_SUPPORTED */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/lmalloc.c b/contrib/syslinux/syslinux-4.03/com32/lib/lmalloc.c deleted file mode 100644 index a646556..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/lmalloc.c +++ /dev/null @@ -1,57 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2010 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <com32.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <syslinux/pmapi.h> - -void *lmalloc(size_t size) -{ - void *p; - p = __com32.cs_pm->lmalloc(size); - if (!p) - errno = ENOMEM; - return p; -} - -void *lzalloc(size_t size) -{ - void *p; - p = __com32.cs_pm->lmalloc(size); - if (!p) - errno = ENOMEM; - else - memset(p, 0, size); - return p; -} - -void lfree(void *ptr) -{ - __com32.cs_pm->lfree(ptr); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/lrand48.c b/contrib/syslinux/syslinux-4.03/com32/lib/lrand48.c deleted file mode 100644 index ff496ec..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/lrand48.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * lrand48.c - */ - -#include <stdlib.h> -#include <stdint.h> - -unsigned short __rand48_seed[3]; - -long jrand48(unsigned short xsubi[3]) -{ - uint64_t x; - - /* The xsubi[] array is littleendian by spec */ - x = (uint64_t) xsubi[0] + - ((uint64_t) xsubi[1] << 16) + ((uint64_t) xsubi[2] << 32); - - x = (0x5deece66dULL * x) + 0xb; - - xsubi[0] = (unsigned short)x; - xsubi[1] = (unsigned short)(x >> 16); - xsubi[2] = (unsigned short)(x >> 32); - - return (long)(int32_t) (x >> 16); -} - -long mrand48(void) -{ - return jrand48(__rand48_seed); -} - -long nrand48(unsigned short xsubi[3]) -{ - return (long)((uint32_t) jrand48(xsubi) >> 1); -} - -long lrand48(void) -{ - return (long)((uint32_t) mrand48() >> 1); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/lstrdup.c b/contrib/syslinux/syslinux-4.03/com32/lib/lstrdup.c deleted file mode 100644 index d11efe7..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/lstrdup.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * lstrdup.c - */ - -#include <string.h> -#include <stdlib.h> -#include <com32.h> - -char *lstrdup(const char *s) -{ - int l = strlen(s) + 1; - char *d = lmalloc(l); - - if (d) - memcpy(d, s, l); - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/malloc.c b/contrib/syslinux/syslinux-4.03/com32/lib/malloc.c deleted file mode 100644 index ec103ab..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/malloc.c +++ /dev/null @@ -1,156 +0,0 @@ -/* - * malloc.c - * - * Very simple linked-list based malloc()/free(). - */ - -#include <stdlib.h> -#include <string.h> -#include <com32.h> -#include <syslinux/memscan.h> -#include "init.h" -#include "malloc.h" - -struct free_arena_header __malloc_head = { - { - ARENA_TYPE_HEAD, - 0, - &__malloc_head, - &__malloc_head, - }, - &__malloc_head, - &__malloc_head -}; - -/* This is extern so it can be overridden by the user application */ -extern size_t __stack_size; -extern void *__mem_end; /* Produced after argv parsing */ - -static inline size_t sp(void) -{ - size_t sp; - asm volatile ("movl %%esp,%0":"=rm" (sp)); - return sp; -} - -#define E820_MEM_MAX 0xfff00000 /* 4 GB - 1 MB */ - -static int consider_memory_area(void *dummy, addr_t start, - addr_t len, bool valid) -{ - struct free_arena_header *fp; - addr_t end; - - (void)dummy; - - if (valid && start < E820_MEM_MAX) { - if (len > E820_MEM_MAX - start) - len = E820_MEM_MAX - start; - - end = start + len; - - if (end > __com32.cs_memsize) { - if (start <= __com32.cs_memsize) { - start = __com32.cs_memsize; - len = end - start; - } - - if (len >= 2 * sizeof(struct arena_header)) { - fp = (struct free_arena_header *)start; - fp->a.size = len; - __inject_free_block(fp); - } - } - } - - return 0; -} - -static void __constructor init_memory_arena(void) -{ - struct free_arena_header *fp; - size_t start, total_space; - - start = (size_t) ARENA_ALIGN_UP(__mem_end); - total_space = sp() - start; - - if (__stack_size == 0 || __stack_size > total_space >> 1) - __stack_size = total_space >> 1; /* Half for the stack, half for the heap... */ - - if (total_space < __stack_size + 4 * sizeof(struct arena_header)) - __stack_size = total_space - 4 * sizeof(struct arena_header); - - fp = (struct free_arena_header *)start; - fp->a.size = total_space - __stack_size; - - __inject_free_block(fp); - - /* Scan the memory map to look for other suitable regions */ - if (!__com32.cs_memsize) - return; /* Old Syslinux core, can't do this... */ - - syslinux_scan_memory(consider_memory_area, NULL); -} - -static void *__malloc_from_block(struct free_arena_header *fp, size_t size) -{ - size_t fsize; - struct free_arena_header *nfp, *na; - - fsize = fp->a.size; - - /* We need the 2* to account for the larger requirements of a free block */ - if (fsize >= size + 2 * sizeof(struct arena_header)) { - /* Bigger block than required -- split block */ - nfp = (struct free_arena_header *)((char *)fp + size); - na = fp->a.next; - - nfp->a.type = ARENA_TYPE_FREE; - nfp->a.size = fsize - size; - fp->a.type = ARENA_TYPE_USED; - fp->a.size = size; - - /* Insert into all-block chain */ - nfp->a.prev = fp; - nfp->a.next = na; - na->a.prev = nfp; - fp->a.next = nfp; - - /* Replace current block on free chain */ - nfp->next_free = fp->next_free; - nfp->prev_free = fp->prev_free; - fp->next_free->prev_free = nfp; - fp->prev_free->next_free = nfp; - } else { - /* Allocate the whole block */ - fp->a.type = ARENA_TYPE_USED; - - /* Remove from free chain */ - fp->next_free->prev_free = fp->prev_free; - fp->prev_free->next_free = fp->next_free; - } - - return (void *)(&fp->a + 1); -} - -void *malloc(size_t size) -{ - struct free_arena_header *fp; - - if (size == 0) - return NULL; - - /* Add the obligatory arena header, and round up */ - size = (size + 2 * sizeof(struct arena_header) - 1) & ARENA_SIZE_MASK; - - for (fp = __malloc_head.next_free; fp->a.type != ARENA_TYPE_HEAD; - fp = fp->next_free) { - if (fp->a.size >= size) { - /* Found fit -- allocate out of this block */ - return __malloc_from_block(fp, size); - } - } - - /* Nothing found... need to request a block from the kernel */ - return NULL; /* No kernel to get stuff from */ -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/malloc.h b/contrib/syslinux/syslinux-4.03/com32/lib/malloc.h deleted file mode 100644 index bf75432..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/malloc.h +++ /dev/null @@ -1,55 +0,0 @@ -/* - * malloc.h - * - * Internals for the memory allocator - */ - -#include <stdint.h> -#include <stddef.h> - -/* - * This is the minimum chunk size we will ask the kernel for; this should - * be a multiple of the page size on all architectures. - */ -#define MALLOC_CHUNK_SIZE 65536 -#define MALLOC_CHUNK_MASK (MALLOC_CHUNK_SIZE-1) - -/* - * This structure should be a power of two. This becomes the - * alignment unit. - */ -struct free_arena_header; - -struct arena_header { - size_t type; - size_t size; /* Also gives the location of the next entry */ - struct free_arena_header *next, *prev; -}; - -#ifdef DEBUG_MALLOC -#define ARENA_TYPE_USED 0x64e69c70 -#define ARENA_TYPE_FREE 0x012d610a -#define ARENA_TYPE_HEAD 0x971676b5 -#define ARENA_TYPE_DEAD 0xeeeeeeee -#else -#define ARENA_TYPE_USED 0 -#define ARENA_TYPE_FREE 1 -#define ARENA_TYPE_HEAD 2 -#endif - -#define ARENA_SIZE_MASK (~(uintptr_t)(sizeof(struct arena_header)-1)) - -#define ARENA_ALIGN_UP(p) ((char *)(((uintptr_t)(p) + ~ARENA_SIZE_MASK) & ARENA_SIZE_MASK)) -#define ARENA_ALIGN_DOWN(p) ((char *)((uintptr_t)(p) & ARENA_SIZE_MASK)) - -/* - * This structure should be no more than twice the size of the - * previous structure. - */ -struct free_arena_header { - struct arena_header a; - struct free_arena_header *next_free, *prev_free; -}; - -extern struct free_arena_header __malloc_head; -void __inject_free_block(struct free_arena_header *ah); diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/math/pow.S b/contrib/syslinux/syslinux-4.03/com32/lib/math/pow.S deleted file mode 100644 index 56f504a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/math/pow.S +++ /dev/null @@ -1,25 +0,0 @@ -/* - * pow.S - * - * double pow(double base, double exponent) - */ - - .text - .globl pow - .type pow,@function -pow: - fldl 12(%esp) - fldl 4(%esp) - fyl2x - fld %st(0) - frndint - fsubr %st,%st(1) - fxch %st(1) - f2xm1 - fld1 - faddp %st,%st(1) - fscale - fstp %st(1) - ret - - .size pow,.-pow diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/math/strtod.c b/contrib/syslinux/syslinux-4.03/com32/lib/math/strtod.c deleted file mode 100644 index f99531a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/math/strtod.c +++ /dev/null @@ -1,156 +0,0 @@ -/* - * strtod.c - * - * Convert string to double - * - * Copyright (C) 2002 Michael Ringgaard. All rights reserved. - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <errno.h> -#include <ctype.h> -#include <stdlib.h> -#include <math.h> - -static inline int is_real(double x) -{ - const double Inf = 1.0 / 0.0; - return (x < Inf) && (x >= -Inf); -} - -double strtod(const char *str, char **endptr) -{ - double number; - int exponent; - int negative; - char *p = (char *)str; - double p10; - int n; - int num_digits; - int num_decimals; - const double Inf = 1.0 / 0.0; - - // Skip leading whitespace - while (isspace(*p)) - p++; - - // Handle optional sign - negative = 0; - switch (*p) { - case '-': - negative = 1; // Fall through to increment position - case '+': - p++; - } - - number = 0.; - exponent = 0; - num_digits = 0; - num_decimals = 0; - - // Process string of digits - while (isdigit(*p)) { - number = number * 10. + (*p - '0'); - p++; - num_digits++; - } - - // Process decimal part - if (*p == '.') { - p++; - - while (isdigit(*p)) { - number = number * 10. + (*p - '0'); - p++; - num_digits++; - num_decimals++; - } - - exponent -= num_decimals; - } - - if (num_digits == 0) { - errno = ERANGE; - return 0.0; - } - // Correct for sign - if (negative) - number = -number; - - // Process an exponent string - if (*p == 'e' || *p == 'E') { - // Handle optional sign - negative = 0; - switch (*++p) { - case '-': - negative = 1; // Fall through to increment pos - case '+': - p++; - } - - // Process string of digits - n = 0; - while (isdigit(*p)) { - n = n * 10 + (*p - '0'); - p++; - } - - if (negative) - exponent -= n; - else - exponent += n; - } - - if (exponent < __DBL_MIN_EXP__ || exponent > __DBL_MAX_EXP__) { - errno = ERANGE; - return Inf; - } - // Scale the result - p10 = 10.; - n = exponent; - if (n < 0) - n = -n; - while (n) { - if (n & 1) { - if (exponent < 0) - number /= p10; - else - number *= p10; - } - n >>= 1; - p10 *= p10; - } - - if (!is_real(number)) - errno = ERANGE; - if (endptr) - *endptr = p; - - return number; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memccpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/memccpy.c deleted file mode 100644 index 7fd9df6..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memccpy.c +++ /dev/null @@ -1,23 +0,0 @@ -/* - * memccpy.c - * - * memccpy() - */ - -#include <stddef.h> -#include <string.h> - -void *memccpy(void *dst, const void *src, int c, size_t n) -{ - char *q = dst; - const char *p = src; - char ch; - - while (n--) { - *q++ = ch = *p++; - if (ch == (char)c) - return q; - } - - return NULL; /* No instance of "c" found */ -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memchr.c b/contrib/syslinux/syslinux-4.03/com32/lib/memchr.c deleted file mode 100644 index d641c86..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memchr.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * memchr.c - */ - -#include <stddef.h> -#include <string.h> - -void *memchr(const void *s, int c, size_t n) -{ - const unsigned char *sp = s; - - while (n--) { - if (*sp == (unsigned char)c) - return (void *)sp; - } - - return NULL; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memcmp.c b/contrib/syslinux/syslinux-4.03/com32/lib/memcmp.c deleted file mode 100644 index a9e642b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memcmp.c +++ /dev/null @@ -1,19 +0,0 @@ -/* - * memcmp.c - */ - -#include <string.h> - -int memcmp(const void *s1, const void *s2, size_t n) -{ - const unsigned char *c1 = s1, *c2 = s2; - int d = 0; - - while (n--) { - d = (int)*c1++ - (int)*c2++; - if (d) - break; - } - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memcpy.S b/contrib/syslinux/syslinux-4.03/com32/lib/memcpy.S deleted file mode 100644 index 6b986a0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memcpy.S +++ /dev/null @@ -1,86 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * memcpy.S - * - * Reasonably efficient memcpy, using aligned transfers at least - * for the destination operand. - */ - - .text - .globl memcpy - .type memcpy, @function -memcpy: - jecxz 1f - - pushl %esi - pushl %edi - pushl %eax /* Return value */ - - movl %eax,%edi - movl %edx,%esi - - /* Initial alignment */ - movl %edi,%edx - shrl $1,%edx - jnc 11f - movsb - decl %ecx -11: - movb %cl,%al - cmpl $2,%ecx - jb 13f - - shrl $1,%edx - jnc 12f - movsw - subl $2,%ecx -12: - /* Bulk transfer */ - movb %cl,%al - shrl $2,%ecx - rep; movsl - - /* Final alignment */ - testb $2,%al - jz 14f - movsw -13: -14: - testb $1,%al - jz 15f - movsb -15: - - popl %eax /* Return value */ - popl %edi - popl %esi -1: - ret - - .size memcpy, .-memcpy diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memmem.c b/contrib/syslinux/syslinux-4.03/com32/lib/memmem.c deleted file mode 100644 index 7c42f1c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memmem.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * memmem.c - * - * Find a byte string inside a longer byte string - * - * This uses the "Not So Naive" algorithm, a very simple but - * usually effective algorithm, see: - * - * http://www-igm.univ-mlv.fr/~lecroq/string/ - */ - -#include <string.h> - -void *memmem(const void *haystack, size_t n, const void *needle, size_t m) -{ - const unsigned char *y = (const unsigned char *)haystack; - const unsigned char *x = (const unsigned char *)needle; - - size_t j, k, l; - - if (m > n || !m || !n) - return NULL; - - if (1 != m) { - if (x[0] == x[1]) { - k = 2; - l = 1; - } else { - k = 1; - l = 2; - } - - j = 0; - while (j <= n - m) { - if (x[1] != y[j + 1]) { - j += k; - } else { - if (!memcmp(x + 2, y + j + 2, m - 2) - && x[0] == y[j]) - return (void *)&y[j]; - j += l; - } - } - } else { - do { - if (*y == *x) - return (void *)y; - y++; - } while (--n); - } - - return NULL; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memmove.S b/contrib/syslinux/syslinux-4.03/com32/lib/memmove.S deleted file mode 100644 index e97299f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memmove.S +++ /dev/null @@ -1,146 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * Copyright 2010 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * memmove.S - * - * Reasonably efficient memmove, using aligned transfers at least - * for the destination operand. - */ - - .globl memmove - .type memmove,@function - .text -memmove: - jecxz 4f - - pushl %esi - pushl %edi - pushl %eax /* Return value */ - - movl %eax,%edi - movl %edx,%esi - - cmpl %edi,%esi - jb 2f - - /* source >= dest, forwards move */ - - /* Initial alignment */ -1: - movl %edi,%edx - shrl $1,%edx - jnc 11f - movsb - decl %ecx -11: - movb %cl,%al - cmpl $2,%ecx - jb 13f - - shrl $1,%edx - jnc 12f - movsw - subl $2,%ecx -12: - /* Bulk transfer */ - movb %cl,%al - shrl $2,%ecx - rep; movsl - - /* Final alignment */ - testb $2,%al - jz 14f - movsw -13: -14: - testb $1,%al - jz 15f - movsb -15: - /* Common exit stub */ -3: - popl %eax /* Return value */ - popl %edi - popl %esi -4: - ret - - -2: - /* source < dest, backwards move if overlap */ - leal -1(%ecx,%esi),%eax - cmpl %eax,%edi - ja 1b /* No overlap, after all... */ - - std - leal -1(%ecx,%edi),%edi - movl %eax,%esi - - /* Initial alignment */ - movl %edi,%edx - shrl $1,%edx - jc 21f - movsb - decl %ecx -21: - decl %esi - decl %edi - movb %cl,%al - cmpl $2,%ecx - jb 23f - shrl $1,%edx - jc 22f - movsw - subl $2,%ecx -22: - /* Bulk transfer */ - subl $2,%esi - subl $2,%edi - movb %cl,%al - shrl $2,%ecx - rep; movsl - - /* Final alignment */ - addl $2,%esi - addl $2,%edi - testb $2,%al - jz 24f - movsw -23: -24: - incl %esi - incl %edi - testb $1,%al - jz 25f - movsb -25: - cld - jmp 3b - - .size memmove, .-memmove diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/mempcpy.S b/contrib/syslinux/syslinux-4.03/com32/lib/mempcpy.S deleted file mode 100644 index cad7b98..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/mempcpy.S +++ /dev/null @@ -1,85 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * mempcpy.S - * - * Reasonably efficient mempcpy, using aligned transfers at least - * for the destination operand. - */ - - .text - .globl mempcpy - .type mempcpy, @function -mempcpy: - jecxz 1f - - pushl %esi - pushl %edi - - movl %eax,%edi - movl %edx,%esi - - /* Initial alignment */ - movl %edi,%edx - shrl $1,%edx - jnc 11f - movsb - decl %ecx -11: - movb %cl,%al - cmpl $2,%ecx - jb 13f - - shrl $1,%edx - jnc 12f - movsw - subl $2,%ecx -12: - /* Bulk transfer */ - movb %cl,%al - shrl $2,%ecx - rep; movsl - - /* Final alignment */ - testb $2,%al - jz 14f - movsw -13: -14: - testb $1,%al - jz 15f - movsb -15: - - movl %edi,%eax /* Return value */ - popl %edi - popl %esi -1: - ret - - .size mempcpy, .-mempcpy diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memset.S b/contrib/syslinux/syslinux-4.03/com32/lib/memset.S deleted file mode 100644 index e641415..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memset.S +++ /dev/null @@ -1,86 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * memset.S - * - * Reasonably efficient memset, using aligned transfers at least - * for the destination operand. - */ - - .globl memset - .type memset,@function - .text -memset: - jecxz 6f - - pushl %edi - pushl %ebx - pushl %eax /* Return value */ - - movl %eax,%edi - movb %dl,%dh - movzwl %dx,%eax - shll $16,%edx - orl %edx,%eax - - /* Initial alignment */ - movl %edi,%edx - shrl $1,%edx - jnc 1f - stosb - decl %ecx -1: - movb %cl,%bl - cmpl $2,%ecx - jb 3f - shrl $1,%edx - jnc 2f - stosw - subl $2,%ecx -2: - /* Bulk transfer */ - movb %cl,%bl - shrl $2,%ecx - rep; stosl - - testb $2,%bl - jz 4f - stosw -3: -4: - testb $1,%bl - jz 5f - stosb -5: - popl %eax /* Return value */ - popl %ebx - popl %edi -6: - ret - - .size memset, .-memset diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/memswap.c b/contrib/syslinux/syslinux-4.03/com32/lib/memswap.c deleted file mode 100644 index 53813ab..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/memswap.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - * memswap() - * - * Swaps the contents of two nonoverlapping memory areas. - * This really could be done faster... - */ - -#include <string.h> - -void memswap(void *m1, void *m2, size_t n) -{ - char *p = m1; - char *q = m2; - char tmp; - - while (n--) { - tmp = *p; - *p = *q; - *q = tmp; - - p++; - q++; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/onexit.c b/contrib/syslinux/syslinux-4.03/com32/lib/onexit.c deleted file mode 100644 index d409e82..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/onexit.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * onexit.c - */ - -#include <stdlib.h> -#include <unistd.h> -#include "atexit.h" - -extern __noreturn(*__exit_handler) (int); -static struct atexit *__atexit_list; - -static __noreturn on_exit_exit(int rv) -{ - struct atexit *ap; - - for (ap = __atexit_list; ap; ap = ap->next) { - ap->fctn(rv, ap->arg); /* This assumes extra args are harmless */ - } - - _exit(rv); -} - -int on_exit(void (*fctn) (int, void *), void *arg) -{ - struct atexit *as = malloc(sizeof(struct atexit)); - - if (!as) - return -1; - - as->fctn = fctn; - as->arg = arg; - - as->next = __atexit_list; - __atexit_list = as; - - __exit_handler = on_exit_exit; - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/bios.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/bios.c deleted file mode 100644 index b3c2c57..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/bios.c +++ /dev/null @@ -1,17 +0,0 @@ -#include <com32.h> -#include <string.h> -#include "pci/pci.h" - -uint32_t __pci_read_write_bios(uint32_t call, uint32_t v, pciaddr_t a) -{ - com32sys_t rs; - memset(&rs, 0, sizeof rs); - rs.eax.w[0] = call; - rs.ebx.w[0] = a >> 8; /* bus:device:function */ - rs.edi.b[0] = a; /* address:reg */ - rs.ecx.l = v; - rs.eflags.l = EFLAGS_CF; - __intcall(0x1a, &rs, &rs); - - return (rs.eflags.l & EFLAGS_CF) ? ~(uint32_t) 0 : rs.ecx.l; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/cfgtype.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/cfgtype.c deleted file mode 100644 index 896f7e5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/cfgtype.c +++ /dev/null @@ -1,89 +0,0 @@ -#include "pci/pci.h" -#include <com32.h> -#include <string.h> - -enum pci_config_type __pci_cfg_type; - -static int type1_ok(void) -{ - uint32_t oldcf8, newcf8; - - /* Test for Configuration Method #1 */ - - /* Note: XFree86 writes ~0 and expects to read back 0x80fffffc. Linux - does this less severe test; go with Linux. */ - - cli(); - outb(1, 0xcfb); /* For old Intel chipsets */ - oldcf8 = inl(0xcf8); - outl(0x80000000, 0xcf8); - newcf8 = inl(0xcf8); - outl(oldcf8, 0xcf8); - sti(); - - return newcf8 == 0x80000000; -} - -static int type2_ok(void) -{ - uint8_t oldcf8, oldcfa; - uint8_t cf8, cfa; - - /* Test for Configuration Method #2 */ - - /* CM#2 is hard to probe for, but let's do our best... */ - - cli(); - outb(0, 0xcfb); /* For old Intel chipsets */ - oldcf8 = inb(0xcf8); - outb(0, 0xcf8); - oldcfa = inb(0xcfa); - outb(0, 0xcfa); - - cf8 = inb(0xcf8); - cfa = inb(0xcfa); - - outb(oldcf8, 0xcf8); - outb(oldcfa, 0xcfa); - sti(); - - return cf8 == 0 && cfa == 0; -} - -int pci_set_config_type(enum pci_config_type type) -{ - static const com32sys_t ireg = { - .eax.l = 0xb101, - .edi.l = 0, - .eflags.l = EFLAGS_CF, - }; - com32sys_t oreg; - - if (type == PCI_CFG_AUTO) { - type = PCI_CFG_NONE; - - /* Try to detect PCI BIOS */ - __intcall(0x1a, &ireg, &oreg); - - if (!(oreg.eflags.l & EFLAGS_CF) && - oreg.eax.b[1] == 0 && oreg.edx.l == 0x20494250) { - /* PCI BIOS present. Use direct access if we know how to do it. */ - - if ((oreg.eax.b[0] & 1) && type1_ok()) - type = PCI_CFG_TYPE1; - else if ((oreg.eax.b[0] & 2) && type2_ok()) - type = PCI_CFG_TYPE2; - else - type = PCI_CFG_BIOS; /* Use BIOS calls as fallback */ - - } else if (type1_ok()) { - type = PCI_CFG_TYPE1; - } else if (type2_ok()) { - type = PCI_CFG_TYPE2; - } else { - type = PCI_CFG_NONE; /* Badness... */ - } - } - - return (__pci_cfg_type = type); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/pci.h b/contrib/syslinux/syslinux-4.03/com32/lib/pci/pci.h deleted file mode 100644 index 8d81b0e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/pci.h +++ /dev/null @@ -1,15 +0,0 @@ -/* - * pci/pci.h - * - * Common internal header file - */ - -#ifndef PCI_PCI_H - -#include <sys/pci.h> -#include <sys/cpu.h> - -extern enum pci_config_type __pci_cfg_type; -extern uint32_t __pci_read_write_bios(uint32_t call, uint32_t v, pciaddr_t a); - -#endif /* PCI_PCI_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readb.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/readb.c deleted file mode 100644 index c0c4172..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readb.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint8_t -#define BWL(x) x ## b -#define BIOSCALL 0xb108 -#include "pci/readx.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readl.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/readl.c deleted file mode 100644 index fbef3a7..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readl.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint32_t -#define BWL(x) x ## l -#define BIOSCALL 0xb10a -#include "pci/readx.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readw.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/readw.c deleted file mode 100644 index 86604c4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readw.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint16_t -#define BWL(x) x ## w -#define BIOSCALL 0xb109 -#include "pci/readx.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readx.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/readx.c deleted file mode 100644 index ed66d5b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/readx.c +++ /dev/null @@ -1,51 +0,0 @@ -#include "pci/pci.h" - -TYPE BWL(pci_read) (pciaddr_t a) -{ - TYPE r; - - for (;;) { - switch (__pci_cfg_type) { - case PCI_CFG_AUTO: - pci_set_config_type(PCI_CFG_AUTO); - break; /* Try again */ - - case PCI_CFG_TYPE1: - { - uint32_t oldcf8; - cli(); - oldcf8 = inl(0xcf8); - outl(a, 0xcf8); - r = BWL(in) (0xcfc + (a & 3)); - outl(oldcf8, 0xcf8); - sti(); - } - return r; - - case PCI_CFG_TYPE2: - { - uint8_t oldcf8, oldcfa; - - if (a & (0x10 << 11)) - return (TYPE) ~ 0; /* Device 16-31 not supported */ - - cli(); - oldcf8 = inb(0xcf8); - oldcfa = inb(0xcfa); - outb(0xf0 + ((a >> (8 - 1)) & 0x0e), 0xcf8); - outb(a >> 16, 0xcfa); - r = BWL(in) (0xc000 + ((a >> (11 - 8)) & 0xf00) + (a & 0xff)); - outb(oldcf8, 0xcf8); - outb(oldcfa, 0xcfa); - sti(); - } - return r; - - case PCI_CFG_BIOS: - return (TYPE) __pci_read_write_bios(BIOSCALL, 0, a); - - default: - return (TYPE) ~ 0; - } - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/scan.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/scan.c deleted file mode 100644 index 2577b32..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/scan.c +++ /dev/null @@ -1,751 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2007 Erwan Velu - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * pci.c - * - * A module to extract pci informations - */ - -#include <inttypes.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <console.h> -#include <sys/pci.h> -#include <com32.h> -#include <stdbool.h> -#include <syslinux/zio.h> - -#ifdef DEBUG -# define dprintf printf -#else -# define dprintf(...) ((void)0) -#endif - -#define MAX_LINE 512 - -/* searching the next char that is not a space */ -static char *skipspace(char *p) -{ - while (*p && *p <= ' ') - p++; - - return p; -} - -/* removing any \n found in a string */ -static void remove_eol(char *string) -{ - int j = strlen(string); - int i = 0; - for (i = 0; i < j; i++) - if (string[i] == '\n') - string[i] = 0; -} - -/* converting a hexa string into its numerical value */ -static int hex_to_int(char *hexa) -{ - return strtoul(hexa, NULL, 16); -} - -/* Replace char 'old' by char 'new' in source */ -void chr_replace(char *source, char old, char new) -{ - while (*source) { - source++; - if (source[0] == old) source[0]=new; - } -} - -/* Try to match any pci device to the appropriate kernel module */ -/* it uses the modules.pcimap from the boot device */ -int get_module_name_from_pcimap(struct pci_domain *domain, - char *modules_pcimap_path) -{ - char line[MAX_LINE]; - char module_name[21]; // the module name field is 21 char long - char delims[]=" "; // colums are separated by spaces - char vendor_id[16]; - char product_id[16]; - char sub_vendor_id[16]; - char sub_product_id[16]; - FILE *f; - struct pci_device *dev=NULL; - - /* Intializing the linux_kernel_module for each pci device to "unknown" */ - /* adding a dev_info member if needed */ - for_each_pci_func(dev, domain) { - /* initialize the dev_info structure if it doesn't exist yet. */ - if (! dev->dev_info) { - dev->dev_info = zalloc(sizeof *dev->dev_info); - if (!dev->dev_info) - return -1; - } - for (int i=0;i<MAX_KERNEL_MODULES_PER_PCI_DEVICE;i++) { - if (strlen(dev->dev_info->linux_kernel_module[i])==0) - strlcpy(dev->dev_info->linux_kernel_module[i], "unknown",7); - } - } - - /* Opening the modules.pcimap (of a linux kernel) from the boot device */ - f=zfopen(modules_pcimap_path, "r"); - if (!f) - return -ENOMODULESPCIMAP; - - strcpy(vendor_id,"0000"); - strcpy(product_id,"0000"); - strcpy(sub_product_id,"0000"); - strcpy(sub_vendor_id,"0000"); - - /* for each line we found in the modules.pcimap */ - while ( fgets(line, sizeof line, f) ) { - /* skipping unecessary lines */ - if ((line[0] == '#') || (line[0] == ' ') || (line[0] == 10)) - continue; - - char *result = NULL; - int field=0; - - /* looking for the next field */ - result = strtok(line, delims); - while( result != NULL ) { - /* if the column is larger than 1 char */ - /* multiple spaces generates some empty fields */ - if (strlen(result)>1) { - switch (field) { - /* About case 0, the kernel module name is featuring '_' or '-' - * in the module name whereas modules.alias is only using '_'. - * To avoid kernel modules duplication, let's rename all '-' in '_' - * to match what modules.alias provides */ - case 0:chr_replace(result,'-','_');strcpy(module_name,result); break; - case 1:strcpy(vendor_id,result); break; - case 2:strcpy(product_id,result); break; - case 3:strcpy(sub_vendor_id,result); break; - case 4:strcpy(sub_product_id,result); break; - } - field++; - } - /* Searching the next field */ - result = strtok( NULL, delims ); - } - int int_vendor_id=hex_to_int(vendor_id); - int int_sub_vendor_id=hex_to_int(sub_vendor_id); - int int_product_id=hex_to_int(product_id); - int int_sub_product_id=hex_to_int(sub_product_id); - /* if a pci_device matches an entry, fill the linux_kernel_module with - the appropriate kernel module */ - for_each_pci_func(dev, domain) { - if (int_vendor_id == dev->vendor && - int_product_id == dev->product && - (int_sub_product_id & dev->sub_product) - == dev->sub_product && - (int_sub_vendor_id & dev->sub_vendor) - == dev->sub_vendor) { - bool found=false; - - /* Scan all known kernel modules for this pci device */ - for (int i=0; i<dev->dev_info->linux_kernel_module_count; i++) { - - /* Try to detect if we already knew the same kernel module*/ - if (strstr(dev->dev_info->linux_kernel_module[i], module_name)) { - found=true; - break; - } - } - /* If we don't have this kernel module, let's add it */ - if (!found) { - strcpy(dev->dev_info->linux_kernel_module[dev->dev_info->linux_kernel_module_count], module_name); - dev->dev_info->linux_kernel_module_count++; - } - } - } - } - fclose(f); - return 0; -} - -/* Try to match any pci device to the appropriate class name */ -/* it uses the pci.ids from the boot device */ -int get_class_name_from_pci_ids(struct pci_domain *domain, char *pciids_path) -{ - char line[MAX_LINE]; - char class_name[PCI_CLASS_NAME_SIZE]; - char sub_class_name[PCI_CLASS_NAME_SIZE]; - char class_id_str[5]; - char sub_class_id_str[5]; - FILE *f; - struct pci_device *dev; - bool class_mode = false; - - /* Intializing the vendor/product name for each pci device to "unknown" */ - /* adding a dev_info member if needed */ - for_each_pci_func(dev, domain) { - /* initialize the dev_info structure if it doesn't exist yet. */ - if (!dev->dev_info) { - dev->dev_info = zalloc(sizeof *dev->dev_info); - if (!dev->dev_info) - return -1; - } - strlcpy(dev->dev_info->class_name, "unknown", 7); - } - - /* Opening the pci.ids from the boot device */ - f = zfopen(pciids_path, "r"); - if (!f) - return -ENOPCIIDS; - - /* for each line we found in the pci.ids */ - while (fgets(line, sizeof line, f)) { - /* Skipping uncessary lines */ - if ((line[0] == '#') || (line[0] == ' ') || (line[0] == 10)) - continue; - - /* Until we found a line starting with a 'C', we are not parsing classes */ - if (line[0] == 'C') - class_mode = true; - if (class_mode == false) - continue; - strlcpy(class_name, "unknown", 7); - /* If the line doesn't start with a tab, it means that's a class name */ - if (line[0] != '\t') { - - /* ignore the two first char and then copy 2 chars (class id) */ - strlcpy(class_id_str, &line[2], 2); - class_id_str[2] = 0; - - /* the class name is the next field */ - strlcpy(class_name, skipspace(strstr(line, " ")), - PCI_CLASS_NAME_SIZE - 1); - remove_eol(class_name); - - int int_class_id_str = hex_to_int(class_id_str); - /* assign the class_name to any matching pci device */ - for_each_pci_func(dev, domain) { - if (int_class_id_str == dev->class[2]) { - strlcpy(dev->dev_info->class_name, class_name, - PCI_CLASS_NAME_SIZE - 1); - /* This value is usually the main category */ - strlcpy(dev->dev_info->category_name, class_name + 4, - PCI_CLASS_NAME_SIZE - 1); - } - } - /* if we have a tab + a char, it means this is a sub class name */ - } else if ((line[0] == '\t') && (line[1] != '\t')) { - - /* the sub class name the second field */ - strlcpy(sub_class_name, skipspace(strstr(line, " ")), - PCI_CLASS_NAME_SIZE - 1); - remove_eol(sub_class_name); - - /* the sub class id is first field */ - strlcpy(sub_class_id_str, &line[1], 2); - sub_class_id_str[2] = 0; - - int int_class_id_str = hex_to_int(class_id_str); - int int_sub_class_id_str = hex_to_int(sub_class_id_str); - /* assign the product_name to any matching pci device */ - for_each_pci_func(dev, domain) { - if (int_class_id_str == dev->class[2] && - int_sub_class_id_str == dev->class[1]) - strlcpy(dev->dev_info->class_name, sub_class_name, - PCI_CLASS_NAME_SIZE - 1); - } - - } - } - fclose(f); - return 0; -} - -/* Try to match any pci device to the appropriate vendor and product name */ -/* it uses the pci.ids from the boot device */ -int get_name_from_pci_ids(struct pci_domain *domain, char *pciids_path) -{ - char line[MAX_LINE]; - char vendor[PCI_VENDOR_NAME_SIZE]; - char vendor_id[5]; - char product[PCI_PRODUCT_NAME_SIZE]; - char product_id[5]; - char sub_product_id[5]; - char sub_vendor_id[5]; - FILE *f; - struct pci_device *dev; - bool skip_to_next_vendor = false; - uint16_t int_vendor_id; - uint16_t int_product_id; - uint16_t int_sub_product_id; - uint16_t int_sub_vendor_id; - - /* Intializing the vendor/product name for each pci device to "unknown" */ - /* adding a dev_info member if needed */ - for_each_pci_func(dev, domain) { - /* initialize the dev_info structure if it doesn't exist yet. */ - if (!dev->dev_info) { - dev->dev_info = zalloc(sizeof *dev->dev_info); - if (!dev->dev_info) - return -1; - } - strlcpy(dev->dev_info->vendor_name, "unknown", 7); - strlcpy(dev->dev_info->product_name, "unknown", 7); - } - - /* Opening the pci.ids from the boot device */ - f = zfopen(pciids_path, "r"); - if (!f) - return -ENOPCIIDS; - - strlcpy(vendor_id, "0000", 4); - strlcpy(product_id, "0000", 4); - strlcpy(sub_product_id, "0000", 4); - strlcpy(sub_vendor_id, "0000", 4); - - /* for each line we found in the pci.ids */ - while (fgets(line, sizeof line, f)) { - /* Skipping uncessary lines */ - if ((line[0] == '#') || (line[0] == ' ') || (line[0] == 'C') || - (line[0] == 10)) - continue; - - /* If the line doesn't start with a tab, it means that's a vendor id */ - if (line[0] != '\t') { - - /* the 4 first chars are the vendor_id */ - strlcpy(vendor_id, line, 4); - - /* the vendor name is the next field */ - vendor_id[4] = 0; - strlcpy(vendor, skipspace(strstr(line, " ")), - PCI_VENDOR_NAME_SIZE - 1); - - remove_eol(vendor); - /* init product_id, sub_product and sub_vendor */ - strlcpy(product_id, "0000", 4); - strlcpy(sub_product_id, "0000", 4); - strlcpy(sub_vendor_id, "0000", 4); - - /* Unless we found a matching device, we have to skip to the next vendor */ - skip_to_next_vendor = true; - - int_vendor_id = hex_to_int(vendor_id); - /* Iterate in all pci devices to find a matching vendor */ - for_each_pci_func(dev, domain) { - /* if one device that match this vendor */ - if (int_vendor_id == dev->vendor) { - /* copy the vendor name for this device */ - strlcpy(dev->dev_info->vendor_name, vendor, - PCI_VENDOR_NAME_SIZE - 1); - /* Some pci devices match this vendor, so we have to found them */ - skip_to_next_vendor = false; - /* Let's loop on the other devices as some may have the same vendor */ - } - } - /* if we have a tab + a char, it means this is a product id - * but we only look at it if we own some pci devices of the current vendor*/ - } else if ((line[0] == '\t') && (line[1] != '\t') - && (skip_to_next_vendor == false)) { - - /* the product name the second field */ - strlcpy(product, skipspace(strstr(line, " ")), - PCI_PRODUCT_NAME_SIZE - 1); - remove_eol(product); - - /* the product id is first field */ - strlcpy(product_id, &line[1], 4); - product_id[4] = 0; - - /* init sub_product and sub_vendor */ - strlcpy(sub_product_id, "0000", 4); - strlcpy(sub_vendor_id, "0000", 4); - - int_vendor_id = hex_to_int(vendor_id); - int_product_id = hex_to_int(product_id); - /* assign the product_name to any matching pci device */ - for_each_pci_func(dev, domain) { - if (int_vendor_id == dev->vendor && - int_product_id == dev->product) { - strlcpy(dev->dev_info->vendor_name, vendor, - PCI_VENDOR_NAME_SIZE - 1); - strlcpy(dev->dev_info->product_name, product, - PCI_PRODUCT_NAME_SIZE - 1); - } - } - - /* if we have two tabs, it means this is a sub product - * but we only look at it if we own some pci devices of the current vendor*/ - } else if ((line[0] == '\t') && (line[1] == '\t') - && (skip_to_next_vendor == false)) { - - /* the product name is last field */ - strlcpy(product, skipspace(strstr(line, " ")), - PCI_PRODUCT_NAME_SIZE - 1); - strlcpy(product, skipspace(strstr(product, " ")), - PCI_PRODUCT_NAME_SIZE - 1); - remove_eol(product); - - /* the sub_vendor id is first field */ - strlcpy(sub_vendor_id, &line[2], 4); - sub_vendor_id[4] = 0; - - /* the sub_vendor id is second field */ - strlcpy(sub_product_id, &line[7], 4); - sub_product_id[4] = 0; - - int_vendor_id = hex_to_int(vendor_id); - int_sub_vendor_id = hex_to_int(sub_vendor_id); - int_product_id = hex_to_int(product_id); - int_sub_product_id = hex_to_int(sub_product_id); - /* assign the product_name to any matching pci device */ - for_each_pci_func(dev, domain) { - if (int_vendor_id == dev->vendor && - int_product_id == dev->product && - int_sub_product_id == dev->sub_product && - int_sub_vendor_id == dev->sub_vendor) { - strlcpy(dev->dev_info->vendor_name, vendor, - PCI_VENDOR_NAME_SIZE - 1); - strlcpy(dev->dev_info->product_name, product, - PCI_PRODUCT_NAME_SIZE - 1); - } - } - } - } - fclose(f); - return 0; -} - -/* searching if any pcidevice match our query */ -struct match *find_pci_device(const struct pci_domain *domain, - struct match *list) -{ - uint32_t did, sid; - struct match *m; - const struct pci_device *dev; - - /* for all matches we have to search */ - for (m = list; m; m = m->next) { - /* for each pci device we know */ - for_each_pci_func(dev, domain) { - /* sid & did are the easiest way to compare devices */ - /* they are made of vendor/product subvendor/subproduct ids */ - sid = dev->svid_sdid; - did = dev->vid_did; - /* if the current device match */ - if (((did ^ m->did) & m->did_mask) == 0 && - ((sid ^ m->sid) & m->sid_mask) == 0 && - dev->revision >= m->rid_min && dev->revision <= m->rid_max) { - dprintf - ("PCI Match: Vendor=%04x Product=%04x Sub_vendor=%04x Sub_Product=%04x Release=%02x\n", - dev->vendor, dev->product, dev->sub_vendor, - dev->sub_product, dev->revision); - /* returning the matched pci device */ - return m; - } - } - } - return NULL; -} - -/* scanning the pci bus to find pci devices */ -struct pci_domain *pci_scan(void) -{ - struct pci_domain *domain = NULL; - struct pci_bus *bus = NULL; - struct pci_slot *slot = NULL; - struct pci_device *func = NULL; - unsigned int nbus, ndev, nfunc, maxfunc; - uint32_t did, sid, rcid; - uint8_t hdrtype; - pciaddr_t a; - int cfgtype; - - cfgtype = pci_set_config_type(PCI_CFG_AUTO); - - dprintf("PCI configuration type %d\n", cfgtype); - - if (cfgtype == PCI_CFG_NONE) - return NULL; - - dprintf("Scanning PCI Buses\n"); - - for (nbus = 0; nbus < MAX_PCI_BUSES; nbus++) { - dprintf("Probing bus 0x%02x... \n", nbus); - bus = NULL; - - for (ndev = 0; ndev < MAX_PCI_DEVICES; ndev++) { - maxfunc = 1; /* Assume a single-function device */ - slot = NULL; - - for (nfunc = 0; nfunc < maxfunc; nfunc++) { - a = pci_mkaddr(nbus, ndev, nfunc, 0); - did = pci_readl(a); - - if (did == 0xffffffff || did == 0xffff0000 || - did == 0x0000ffff || did == 0x00000000) - continue; - - hdrtype = pci_readb(a + 0x0e); - - if (hdrtype & 0x80) - maxfunc = MAX_PCI_FUNC; /* Multifunction device */ - - rcid = pci_readl(a + 0x08); - sid = pci_readl(a + 0x2c); - - if (!domain) { - domain = zalloc(sizeof *domain); - if (!domain) - goto bail; - } - if (!bus) { - bus = zalloc(sizeof *bus); - if (!bus) - goto bail; - domain->bus[nbus] = bus; - } - if (!slot) { - slot = zalloc(sizeof *slot); - if (!slot) - goto bail; - bus->slot[ndev] = slot; - } - func = zalloc(sizeof *func); - if (!func) - goto bail; - - slot->func[nfunc] = func; - - func->vid_did = did; - func->svid_sdid = sid; - func->rid_class = rcid; - - dprintf - ("Scanning: BUS %02x DID %08x (%04x:%04x) SID %08x RID %02x\n", - nbus, did, did >> 16, (did << 16) >> 16, sid, rcid & 0xff); - } - } - } - - return domain; - -bail: - free_pci_domain(domain); - return NULL; -} - -/* gathering additional configuration*/ -void gather_additional_pci_config(struct pci_domain *domain) -{ - struct pci_device *dev; - pciaddr_t pci_addr; - int cfgtype; - - cfgtype = pci_set_config_type(PCI_CFG_AUTO); - if (cfgtype == PCI_CFG_NONE) - return; - - for_each_pci_func3(dev, domain, pci_addr) { - if (!dev->dev_info) { - dev->dev_info = zalloc(sizeof *dev->dev_info); - if (!dev->dev_info) { - return; - } - } - dev->dev_info->irq = pci_readb(pci_addr + 0x3c); - dev->dev_info->latency = pci_readb(pci_addr + 0x0d); - } -} - -void free_pci_domain(struct pci_domain *domain) -{ - struct pci_bus *bus; - struct pci_slot *slot; - struct pci_device *func; - unsigned int nbus, ndev, nfunc; - - if (domain) { - for (nbus = 0; nbus < MAX_PCI_BUSES; nbus++) { - bus = domain->bus[nbus]; - if (bus) { - for (ndev = 0; ndev < MAX_PCI_DEVICES; ndev++) { - slot = bus->slot[ndev]; - if (slot) { - for (nfunc = 0; nfunc < MAX_PCI_FUNC; nfunc++) { - func = slot->func[nfunc]; - if (func) { - if (func->dev_info) - free(func->dev_info); - free(func); - } - free(slot); - } - } - free(bus); - } - } - free(domain); - } - } -} - -/* Try to match any pci device to the appropriate kernel module */ -/* it uses the modules.alias from the boot device */ -int get_module_name_from_alias(struct pci_domain *domain, char *modules_alias_path) -{ - char line[MAX_LINE]; - char module_name[21]; // the module name field is 21 char long - char delims[]="*"; // colums are separated by spaces - char vendor_id[16]; - char product_id[16]; - char sub_vendor_id[16]; - char sub_product_id[16]; - FILE *f; - struct pci_device *dev=NULL; - - /* Intializing the linux_kernel_module for each pci device to "unknown" */ - /* adding a dev_info member if needed */ - for_each_pci_func(dev, domain) { - /* initialize the dev_info structure if it doesn't exist yet. */ - if (! dev->dev_info) { - dev->dev_info = zalloc(sizeof *dev->dev_info); - if (!dev->dev_info) - return -1; - } - for (int i=0;i<MAX_KERNEL_MODULES_PER_PCI_DEVICE;i++) { - if (strlen(dev->dev_info->linux_kernel_module[i])==0) - strlcpy(dev->dev_info->linux_kernel_module[i], "unknown",7); - } - } - - /* Opening the modules.pcimap (of a linux kernel) from the boot device */ - f=zfopen(modules_alias_path, "r"); - if (!f) - return -ENOMODULESALIAS; - - /* for each line we found in the modules.pcimap */ - while ( fgets(line, sizeof line, f) ) { - /* skipping unecessary lines */ - if ((line[0] == '#') || (strstr(line,"alias pci:v")==NULL)) - continue; - - /* Resetting temp buffer*/ - memset(module_name,0,sizeof(module_name)); - memset(vendor_id,0,sizeof(vendor_id)); - memset(sub_vendor_id,0,sizeof(sub_vendor_id)); - memset(product_id,0,sizeof(product_id)); - memset(sub_product_id,0,sizeof(sub_product_id)); - strcpy(vendor_id,"0000"); - strcpy(product_id,"0000"); - /* ffff will be used to match any device as in modules.alias - * a missing subvendor/product have to be considered as 0xFFFF*/ - strcpy(sub_product_id,"ffff"); - strcpy(sub_vendor_id,"ffff"); - - char *result = NULL; - int field=0; - - /* looking for the next field */ - result = strtok(line+strlen("alias pci:v"), delims); - while( result != NULL ) { - if (field==0) { - - /* Searching for the vendor separator*/ - char *temp = strstr(result,"d"); - if (temp != NULL) { - strlcpy(vendor_id,result,temp-result); - result+=strlen(vendor_id)+1; - } - - /* Searching for the product separator*/ - temp = strstr(result,"sv"); - if (temp != NULL) { - strlcpy(product_id,result,temp-result); - result+=strlen(product_id)+1; - } - - /* Searching for the sub vendor separator*/ - temp = strstr(result,"sd"); - if (temp != NULL) { - strlcpy(sub_vendor_id,result,temp-result); - result+=strlen(sub_vendor_id)+1; - } - - /* Searching for the sub product separator*/ - temp = strstr(result,"bc"); - if (temp != NULL) { - strlcpy(sub_product_id,result,temp-result); - result+=strlen(sub_product_id)+1; - } - /* That's the module name */ - } else if ((strlen(result)>2) && - (result[0]==0x20)) - strcpy(module_name,result+1); - /* We have to replace \n by \0*/ - module_name[strlen(module_name)-1]='\0'; - field++; - - /* Searching the next field */ - result = strtok( NULL, delims ); - } - - /* Now we have extracted informations from the modules.alias - * Let's compare it with the devices we know*/ - int int_vendor_id=hex_to_int(vendor_id); - int int_sub_vendor_id=hex_to_int(sub_vendor_id); - int int_product_id=hex_to_int(product_id); - int int_sub_product_id=hex_to_int(sub_product_id); - /* if a pci_device matches an entry, fill the linux_kernel_module with - the appropriate kernel module */ - for_each_pci_func(dev, domain) { - if (int_vendor_id == dev->vendor && - int_product_id == dev->product && - (int_sub_product_id & dev->sub_product) - == dev->sub_product && - (int_sub_vendor_id & dev->sub_vendor) - == dev->sub_vendor) { - bool found=false; - - /* Scan all known kernel modules for this pci device */ - for (int i=0; i<dev->dev_info->linux_kernel_module_count; i++) { - - /* Try to detect if we already knew the same kernel module*/ - if (strstr(dev->dev_info->linux_kernel_module[i], module_name)) { - found=true; - break; - } - } - /* If we don't have this kernel module, let's add it */ - if (!found) { - strcpy(dev->dev_info->linux_kernel_module[dev->dev_info->linux_kernel_module_count], module_name); - dev->dev_info->linux_kernel_module_count++; - } - } - } - } - fclose(f); - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writeb.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/writeb.c deleted file mode 100644 index 5a9a24a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writeb.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint8_t -#define BWL(x) x ## b -#define BIOSCALL 0xb10b -#include "pci/writex.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writel.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/writel.c deleted file mode 100644 index df9fc7b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writel.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint32_t -#define BWL(x) x ## l -#define BIOSCALL 0xb10d -#include "pci/writex.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writew.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/writew.c deleted file mode 100644 index e5a948a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writew.c +++ /dev/null @@ -1,4 +0,0 @@ -#define TYPE uint16_t -#define BWL(x) x ## w -#define BIOSCALL 0xb10c -#include "pci/writex.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writex.c b/contrib/syslinux/syslinux-4.03/com32/lib/pci/writex.c deleted file mode 100644 index d83a1ee..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/pci/writex.c +++ /dev/null @@ -1,50 +0,0 @@ -#include "pci/pci.h" - -void BWL(pci_write)(TYPE v, pciaddr_t a) -{ - for (;;) { - switch (__pci_cfg_type) { - case PCI_CFG_AUTO: - pci_set_config_type(PCI_CFG_AUTO); - break; /* Try again */ - - case PCI_CFG_TYPE1: - { - uint32_t oldcf8; - cli(); - oldcf8 = inl(0xcf8); - outl(a, 0xcf8); - BWL(out) (v, 0xcfc + (a & 3)); - outl(oldcf8, 0xcf8); - sti(); - } - return; - - case PCI_CFG_TYPE2: - { - uint8_t oldcf8, oldcfa; - - if (a & (0x10 << 11)) - return; /* Devices 16-31 not supported */ - - cli(); - oldcf8 = inb(0xcf8); - oldcfa = inb(0xcfa); - outb(0xf0 + ((a >> (8 - 1)) & 0x0e), 0xcf8); - outb(a >> 16, 0xcfa); - BWL(out) (v, 0xc000 + ((a >> (11 - 8)) & 0xf00) + (a & 0xff)); - outb(oldcf8, 0xcf8); - outb(oldcfa, 0xcfa); - sti(); - } - return; - - case PCI_CFG_BIOS: - __pci_read_write_bios(BIOSCALL, v, a); - return; - - default: - return; - } - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/perror.c b/contrib/syslinux/syslinux-4.03/com32/lib/perror.c deleted file mode 100644 index ff23b91..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/perror.c +++ /dev/null @@ -1,12 +0,0 @@ -/* - * perror.c - */ - -#include <errno.h> -#include <stdio.h> -#include <string.h> - -void perror(const char *s) -{ - fprintf(stderr, "%s: error %d\n", s, errno); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/printf.c b/contrib/syslinux/syslinux-4.03/com32/lib/printf.c deleted file mode 100644 index 86c2b76..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/printf.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * printf.c - */ - -#include <stdio.h> -#include <stdarg.h> - -int printf(const char *format, ...) -{ - va_list ap; - int rv; - - va_start(ap, format); - rv = vfprintf(stdout, format, ap); - va_end(ap); - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/putchar.c b/contrib/syslinux/syslinux-4.03/com32/lib/putchar.c deleted file mode 100644 index 6f993aa..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/putchar.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * putchar.c - * - * gcc "printf decompilation" expects this to exist... - */ - -#include <stdio.h> - -#undef putchar - -int putchar(int c) -{ - unsigned char ch = c; - - return _fwrite(&ch, 1, stdout) == 1 ? ch : EOF; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/puts.c b/contrib/syslinux/syslinux-4.03/com32/lib/puts.c deleted file mode 100644 index 6028543..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/puts.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * puts.c - */ - -#include <stdio.h> - -int puts(const char *s) -{ - if (fputs(s, stdout) < 0) - return -1; - - return _fwrite("\n", 1, stdout); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/qsort.c b/contrib/syslinux/syslinux-4.03/com32/lib/qsort.c deleted file mode 100644 index a9d646c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/qsort.c +++ /dev/null @@ -1,46 +0,0 @@ -/* - * qsort.c - * - * This is actually combsort. It's an O(n log n) algorithm with - * simplicity/small code size being its main virtue. - */ - -#include <stddef.h> -#include <stdlib.h> -#include <string.h> - -static inline size_t newgap(size_t gap) -{ - gap = (gap * 10) / 13; - if (gap == 9 || gap == 10) - gap = 11; - - if (gap < 1) - gap = 1; - return gap; -} - -void qsort(void *base, size_t nmemb, size_t size, - int (*compar) (const void *, const void *)) -{ - size_t gap = nmemb; - size_t i, j; - char *p1, *p2; - int swapped; - - if (!nmemb) - return; - - do { - gap = newgap(gap); - swapped = 0; - - for (i = 0, p1 = base; i < nmemb - gap; i++, p1 += size) { - j = i + gap; - if (compar(p1, p2 = (char *)base + j * size) > 0) { - memswap(p1, p2, size); - swapped = 1; - } - } - } while (gap > 1 || swapped); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/realloc.c b/contrib/syslinux/syslinux-4.03/com32/lib/realloc.c deleted file mode 100644 index 2969e31..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/realloc.c +++ /dev/null @@ -1,98 +0,0 @@ -/* - * realloc.c - */ - -#include <stdlib.h> -#include <string.h> -#include <minmax.h> - -#include "malloc.h" - -void *realloc(void *ptr, size_t size) -{ - struct free_arena_header *ah, *nah; - void *newptr; - size_t newsize, oldsize, xsize; - - if (!ptr) - return malloc(size); - - if (size == 0) { - free(ptr); - return NULL; - } - - ah = (struct free_arena_header *) - ((struct arena_header *)ptr - 1); - - /* Actual size of the old block */ - oldsize = ah->a.size; - - /* Add the obligatory arena header, and round up */ - newsize = (size + 2 * sizeof(struct arena_header) - 1) & ARENA_SIZE_MASK; - - if (oldsize >= newsize && newsize >= (oldsize >> 2) && - oldsize - newsize < 4096) { - /* This allocation is close enough already. */ - return ptr; - } else { - xsize = oldsize; - - nah = ah->a.next; - if ((char *)nah == (char *)ah + ah->a.size && - nah->a.type == ARENA_TYPE_FREE && - oldsize + nah->a.size >= newsize) { - /* Merge in subsequent free block */ - ah->a.next = nah->a.next; - ah->a.next->a.prev = ah; - nah->next_free->prev_free = nah->prev_free; - nah->prev_free->next_free = nah->next_free; - xsize = (ah->a.size += nah->a.size); - } - - if (xsize >= newsize) { - /* We can reallocate in place */ - if (xsize >= newsize + 2 * sizeof(struct arena_header)) { - /* Residual free block at end */ - nah = (struct free_arena_header *)((char *)ah + newsize); - nah->a.type = ARENA_TYPE_FREE; - nah->a.size = xsize - newsize; - ah->a.size = newsize; - - /* Insert into block list */ - nah->a.next = ah->a.next; - ah->a.next = nah; - nah->a.next->a.prev = nah; - nah->a.prev = ah; - - /* Insert into free list */ - if (newsize > oldsize) { - /* Hack: this free block is in the path of a memory object - which has already been grown at least once. As such, put - it at the *end* of the freelist instead of the beginning; - trying to save it for future realloc()s of the same block. */ - nah->prev_free = __malloc_head.prev_free; - nah->next_free = &__malloc_head; - __malloc_head.prev_free = nah; - nah->prev_free->next_free = nah; - } else { - nah->next_free = __malloc_head.next_free; - nah->prev_free = &__malloc_head; - __malloc_head.next_free = nah; - nah->next_free->prev_free = nah; - } - } - /* otherwise, use up the whole block */ - return ptr; - } else { - /* Last resort: need to allocate a new block and copy */ - oldsize -= sizeof(struct arena_header); - newptr = malloc(size); - if (newptr) { - memcpy(newptr, ptr, min(size, oldsize)); - free(ptr); - } - return newptr; - } - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/seed48.c b/contrib/syslinux/syslinux-4.03/com32/lib/seed48.c deleted file mode 100644 index c5b28aa..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/seed48.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * seed48.c - */ - -#include <stdlib.h> -#include <stdint.h> -#include <string.h> - -extern unsigned short __rand48_seed[3]; - -unsigned short *seed48(const unsigned short xsubi[3]) -{ - static unsigned short oldseed[3]; - memcpy(oldseed, __rand48_seed, sizeof __rand48_seed); - memcpy(__rand48_seed, xsubi, sizeof __rand48_seed); - - return oldseed; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/setjmp.S b/contrib/syslinux/syslinux-4.03/com32/lib/setjmp.S deleted file mode 100644 index 658df48..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/setjmp.S +++ /dev/null @@ -1,63 +0,0 @@ -/* - * arch/i386/setjmp.S - * - * setjmp/longjmp for the i386 architecture - * - * - * - * The jmp_buf is assumed to contain the following, in order: - * %ebx - * %esp - * %ebp - * %esi - * %edi - * <return address> - */ - - .text - .align 4 - - .globl _setjmp - .type _setjmp, @function -_setjmp: # gcc 4.0.1 wants this as an alias? - - .globl setjmp - .type setjmp, @function -setjmp: -#ifdef REGPARM - movl %eax,%edx -#else - movl 4(%esp),%edx -#endif - popl %ecx # Return address, and adjust the stack - xorl %eax,%eax # Return value - movl %ebx,(%edx) - movl %esp,4(%edx) # Post-return %esp! - pushl %ecx # Make the call/return stack happy - movl %ebp,8(%edx) - movl %esi,12(%edx) - movl %edi,16(%edx) - movl %ecx,20(%edx) # Return address - ret - - .size setjmp,.-setjmp - - .text - .align 4 - .globl longjmp - .type longjmp, @function -longjmp: -#ifdef REGPARM - xchgl %eax,%edx -#else - movl 4(%esp),%edx # jmp_ptr address - movl 8(%esp),%eax # Return value -#endif - movl (%edx),%ebx - movl 4(%edx),%esp - movl 8(%edx),%ebp - movl 12(%edx),%esi - movl 16(%edx),%edi - jmp *20(%edx) - - .size longjmp,.-longjmp diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/snprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/snprintf.c deleted file mode 100644 index 304bab4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/snprintf.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * snprintf.c - */ - -#include <stdio.h> - -int snprintf(char *buffer, size_t n, const char *format, ...) -{ - va_list ap; - int rv; - - va_start(ap, format); - rv = vsnprintf(buffer, n, format, ap); - va_end(ap); - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/sprintf.c deleted file mode 100644 index 3c32841..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sprintf.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * sprintf.c - */ - -#include <stdio.h> -#include <unistd.h> - -int sprintf(char *buffer, const char *format, ...) -{ - va_list ap; - int rv; - - va_start(ap, format); - rv = vsnprintf(buffer, ~(size_t) 0, format, ap); - va_end(ap); - - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/srand48.c b/contrib/syslinux/syslinux-4.03/com32/lib/srand48.c deleted file mode 100644 index 6a6c20a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/srand48.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * srand48.c - */ - -#include <stdlib.h> -#include <stdint.h> - -extern unsigned short __rand48_seed[3]; - -void srand48(long seedval) -{ - __rand48_seed[0] = 0x330e; - __rand48_seed[1] = (unsigned short)seedval; - __rand48_seed[2] = (unsigned short)((uint32_t) seedval >> 16); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sscanf.c b/contrib/syslinux/syslinux-4.03/com32/lib/sscanf.c deleted file mode 100644 index 096d233..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sscanf.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * sscanf() - */ - -#include <stdio.h> - -int sscanf(const char *str, const char *format, ...) -{ - va_list ap; - int rv; - - va_start(ap, format); - rv = vsscanf(str, format, ap); - va_end(ap); - - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/stack.c b/contrib/syslinux/syslinux-4.03/com32/lib/stack.c deleted file mode 100644 index dd7d9d4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/stack.c +++ /dev/null @@ -1,4 +0,0 @@ -#include <stdlib.h> - -/* Default stack size 8 MB */ -size_t __stack_size = 8 << 20; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/stpcpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/stpcpy.c deleted file mode 100644 index 23e20af..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/stpcpy.c +++ /dev/null @@ -1,23 +0,0 @@ -/* - * stpcpy.c - * - * stpcpy() - */ - -#include <string.h> - -char *stpcpy(char *dst, const char *src) -{ - char *q = dst; - const char *p = src; - char ch; - - for (;;) { - *q = ch = *p++; - if (!ch) - break; - q++; - } - - return q; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/stpncpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/stpncpy.c deleted file mode 100644 index 0537a56..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/stpncpy.c +++ /dev/null @@ -1,23 +0,0 @@ -/* - * stpncpy.c - * - * stpncpy() - */ - -#include <string.h> - -char *stpncpy(char *dst, const char *src, size_t n) -{ - char *q = dst; - const char *p = src; - char ch; - - while (n--) { - *q = ch = *p++; - if (!ch) - break; - q++; - } - - return q; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strcasecmp.c b/contrib/syslinux/syslinux-4.03/com32/lib/strcasecmp.c deleted file mode 100644 index 30949a0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strcasecmp.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - * strcasecmp.c - */ - -#include <string.h> -#include <ctype.h> - -int strcasecmp(const char *s1, const char *s2) -{ - const unsigned char *c1 = (const unsigned char *)s1; - const unsigned char *c2 = (const unsigned char *)s2; - unsigned char ch; - int d = 0; - - while (1) { - /* toupper() expects an unsigned char (implicitly cast to int) - as input, and returns an int, which is exactly what we want. */ - d = toupper(ch = *c1++) - toupper(*c2++); - if (d || !ch) - break; - } - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strcat.c b/contrib/syslinux/syslinux-4.03/com32/lib/strcat.c deleted file mode 100644 index 91bdb32..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strcat.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * strcat.c - */ - -#include <string.h> - -char *strcat(char *dst, const char *src) -{ - strcpy(strchr(dst, '\0'), src); - return dst; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strchr.c b/contrib/syslinux/syslinux-4.03/com32/lib/strchr.c deleted file mode 100644 index cd3ec78..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strchr.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * strchr.c - */ - -#include <string.h> - -char *strchr(const char *s, int c) -{ - while (*s != (char)c) { - if (!*s) - return NULL; - s++; - } - - return (char *)s; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strcmp.c b/contrib/syslinux/syslinux-4.03/com32/lib/strcmp.c deleted file mode 100644 index 47a4aad..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strcmp.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * strcmp.c - */ - -#include <string.h> - -int strcmp(const char *s1, const char *s2) -{ - const unsigned char *c1 = (const unsigned char *)s1; - const unsigned char *c2 = (const unsigned char *)s2; - unsigned char ch; - int d = 0; - - while (1) { - d = (int)(ch = *c1++) - (int)*c2++; - if (d || !ch) - break; - } - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strcpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/strcpy.c deleted file mode 100644 index 0e3b021..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strcpy.c +++ /dev/null @@ -1,20 +0,0 @@ -/* - * strcpy.c - * - * strcpy() - */ - -#include <string.h> - -char *strcpy(char *dst, const char *src) -{ - char *q = dst; - const char *p = src; - char ch; - - do { - *q++ = ch = *p++; - } while (ch); - - return dst; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strdup.c b/contrib/syslinux/syslinux-4.03/com32/lib/strdup.c deleted file mode 100644 index 766958b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strdup.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * strdup.c - */ - -#include <string.h> -#include <stdlib.h> - -char *strdup(const char *s) -{ - int l = strlen(s) + 1; - char *d = malloc(l); - - if (d) - memcpy(d, s, l); - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strerror.c b/contrib/syslinux/syslinux-4.03/com32/lib/strerror.c deleted file mode 100644 index 8dbe74a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strerror.c +++ /dev/null @@ -1,23 +0,0 @@ -/* - * strerror.c - */ - -#include <string.h> - -char *strerror(int errnum) -{ - static char message[32] = "error "; /* enough for error 2^63-1 */ - - char numbuf[32]; - char *p; - - p = numbuf + sizeof numbuf; - *--p = '\0'; - - do { - *--p = (errnum % 10) + '0'; - errnum /= 10; - } while (errnum); - - return (char *)memcpy(message + 6, p, (numbuf + sizeof numbuf) - p); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strlcat.c b/contrib/syslinux/syslinux-4.03/com32/lib/strlcat.c deleted file mode 100644 index 75f69ed..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strlcat.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * strlcat.c - */ - -#include <string.h> -#include <klibc/compiler.h> - -size_t strlcat(char *dst, const char *src, size_t size) -{ - size_t bytes = 0; - char *q = dst; - const char *p = src; - char ch; - - while (bytes < size && *q) { - q++; - bytes++; - } - - while ((ch = *p++)) { - if (bytes < size) - *q++ = ch; - - bytes++; - } - - *q = '\0'; - return bytes; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strlcpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/strlcpy.c deleted file mode 100644 index 284e72e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strlcpy.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - * strlcpy.c - */ - -#include <string.h> -#include <klibc/compiler.h> - -size_t strlcpy(char *dst, const char *src, size_t size) -{ - size_t bytes = 0; - char *q = dst; - const char *p = src; - char ch; - - while ((ch = *p++)) { - if (bytes < size) - *q++ = ch; - - bytes++; - } - - *q = '\0'; - return bytes; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strlen.c b/contrib/syslinux/syslinux-4.03/com32/lib/strlen.c deleted file mode 100644 index d72c7fa..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strlen.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * strlen() - */ - -#include <string.h> - -size_t strlen(const char *s) -{ - const char *ss = s; - while (*ss) - ss++; - return ss - s; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strncasecmp.c b/contrib/syslinux/syslinux-4.03/com32/lib/strncasecmp.c deleted file mode 100644 index 2caac0a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strncasecmp.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - * strncasecmp.c - */ - -#include <string.h> -#include <ctype.h> - -int strncasecmp(const char *s1, const char *s2, size_t n) -{ - const unsigned char *c1 = (const unsigned char *)s1; - const unsigned char *c2 = (const unsigned char *)s2; - unsigned char ch; - int d = 0; - - while (n--) { - /* toupper() expects an unsigned char (implicitly cast to int) - as input, and returns an int, which is exactly what we want. */ - d = toupper(ch = *c1++) - toupper(*c2++); - if (d || !ch) - break; - } - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strncat.c b/contrib/syslinux/syslinux-4.03/com32/lib/strncat.c deleted file mode 100644 index 71cdb35..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strncat.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * strncat.c - */ - -#include <string.h> - -char *strncat(char *dst, const char *src, size_t n) -{ - strncpy(strchr(dst, '\0'), src, n); - return dst; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strncmp.c b/contrib/syslinux/syslinux-4.03/com32/lib/strncmp.c deleted file mode 100644 index e41b9e3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strncmp.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * strncmp.c - */ - -#include <string.h> - -int strncmp(const char *s1, const char *s2, size_t n) -{ - const unsigned char *c1 = (const unsigned char *)s1; - const unsigned char *c2 = (const unsigned char *)s2; - unsigned char ch; - int d = 0; - - while (n--) { - d = (int)(ch = *c1++) - (int)*c2++; - if (d || !ch) - break; - } - - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strncpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/strncpy.c deleted file mode 100644 index 0eda791..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strncpy.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * strncpy.c - * - * strncpy() - */ - -#include <string.h> - -char *strncpy(char *dst, const char *src, size_t n) -{ - char *q = dst; - const char *p = src; - char ch; - - while (n--) { - *q++ = ch = *p++; - if (!ch) - break; - } - - return dst; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strndup.c b/contrib/syslinux/syslinux-4.03/com32/lib/strndup.c deleted file mode 100644 index d1073a8..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strndup.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * strndup.c - */ - -#include <string.h> -#include <stdlib.h> - -char *strndup(const char *s, size_t n) -{ - int l = n > strlen(s) ? strlen(s) + 1 : n + 1; - char *d = malloc(l); - - if (d) - memcpy(d, s, l); - d[n] = '\0'; - return d; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strnlen.c b/contrib/syslinux/syslinux-4.03/com32/lib/strnlen.c deleted file mode 100644 index c22f8dc..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strnlen.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * strnlen() - */ - -#include <string.h> - -size_t strnlen(const char *s, size_t n) -{ - const char *ss = s; - while (n-- && *ss) - ss++; - return ss - s; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strntoimax.c b/contrib/syslinux/syslinux-4.03/com32/lib/strntoimax.c deleted file mode 100644 index a3f4010..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strntoimax.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * strntoimax.c - * - * strntoimax() - */ - -#include <stddef.h> -#include <inttypes.h> - -intmax_t strntoimax(const char *nptr, char **endptr, int base, size_t n) -{ - return (intmax_t) strntoumax(nptr, endptr, base, n); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strntoumax.c b/contrib/syslinux/syslinux-4.03/com32/lib/strntoumax.c deleted file mode 100644 index d8bc73b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strntoumax.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * strntoumax.c - * - * The strntoumax() function and associated - */ - -#include <stddef.h> -#include <stdint.h> -#include <ctype.h> - -static inline int digitval(int ch) -{ - if (ch >= '0' && ch <= '9') { - return ch - '0'; - } else if (ch >= 'A' && ch <= 'Z') { - return ch - 'A' + 10; - } else if (ch >= 'a' && ch <= 'z') { - return ch - 'a' + 10; - } else { - return -1; - } -} - -uintmax_t strntoumax(const char *nptr, char **endptr, int base, size_t n) -{ - int minus = 0; - uintmax_t v = 0; - int d; - - while (n && isspace((unsigned char)*nptr)) { - nptr++; - n--; - } - - /* Single optional + or - */ - if (n && *nptr == '-') { - minus = 1; - nptr++; - n--; - } else if (n && *nptr == '+') { - nptr++; - } - - if (base == 0) { - if (n >= 2 && nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) { - n -= 2; - nptr += 2; - base = 16; - } else if (n >= 1 && nptr[0] == '0') { - n--; - nptr++; - base = 8; - } else { - base = 10; - } - } else if (base == 16) { - if (n >= 2 && nptr[0] == '0' && (nptr[1] == 'x' || nptr[1] == 'X')) { - n -= 2; - nptr += 2; - } - } - - while (n && (d = digitval(*nptr)) >= 0 && d < base) { - v = v * base + d; - n--; - nptr++; - } - - if (endptr) - *endptr = (char *)nptr; - - return minus ? -v : v; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strrchr.c b/contrib/syslinux/syslinux-4.03/com32/lib/strrchr.c deleted file mode 100644 index a7d2fee..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strrchr.c +++ /dev/null @@ -1,18 +0,0 @@ -/* - * strrchr.c - */ - -#include <string.h> - -char *strrchr(const char *s, int c) -{ - const char *found = NULL; - - while (*s) { - if (*s == (char)c) - found = s; - s++; - } - - return (char *)found; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strsep.c b/contrib/syslinux/syslinux-4.03/com32/lib/strsep.c deleted file mode 100644 index 5c4f03f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strsep.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * strsep.c - */ - -#include <string.h> - -char *strsep(char **stringp, const char *delim) -{ - char *s = *stringp; - char *e; - - if (!s) - return NULL; - - e = strpbrk(s, delim); - if (e) - *e++ = '\0'; - - *stringp = e; - return s; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strspn.c b/contrib/syslinux/syslinux-4.03/com32/lib/strspn.c deleted file mode 100644 index 7a24820..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strspn.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * strspn, strcspn - */ - -#include <string.h> -#include <stddef.h> -#include <inttypes.h> -#include <limits.h> - -#ifndef LONG_BIT -#define LONG_BIT (CHAR_BIT*sizeof(long)) -#endif - -static void set_bit(unsigned long *bitmap, unsigned int bit) -{ - bitmap[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT); -} - -static int test_bit(unsigned long *bitmap, unsigned int bit) -{ - return (int)(bitmap[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1; -} - -static size_t strxspn(const char *s, const char *map, int parity) -{ - unsigned long matchmap[((1 << CHAR_BIT) + LONG_BIT - 1) / LONG_BIT]; - size_t n = 0; - - /* Create bitmap */ - memset(matchmap, 0, sizeof matchmap); - while (*map) - set_bit(matchmap, (unsigned char)*map++); - - /* Make sure the null character never matches */ - if (parity) - set_bit(matchmap, 0); - - /* Calculate span length */ - while (test_bit(matchmap, (unsigned char)*s++) ^ parity) - n++; - - return n; -} - -size_t strspn(const char *s, const char *accept) -{ - return strxspn(s, accept, 0); -} - -size_t strcspn(const char *s, const char *reject) -{ - return strxspn(s, reject, 1); -} - -char *strpbrk(const char *s, const char *accept) -{ - const char *ss = s + strxspn(s, accept, 1); - - return *ss ? (char *)ss : NULL; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strstr.c b/contrib/syslinux/syslinux-4.03/com32/lib/strstr.c deleted file mode 100644 index 0a3e743..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strstr.c +++ /dev/null @@ -1,10 +0,0 @@ -/* - * strstr.c - */ - -#include <string.h> - -char *strstr(const char *haystack, const char *needle) -{ - return (char *)memmem(haystack, strlen(haystack), needle, strlen(needle)); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtoimax.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtoimax.c deleted file mode 100644 index 0cdd088..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtoimax.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE intmax_t -#define NAME strtoimax -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtok.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtok.c deleted file mode 100644 index d2e37bb..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtok.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * strtok.c - */ - -#include <string.h> - -char *strtok(char *s, const char *delim) -{ - static char *holder; - - if (s) - holder = s; - - return strsep(&holder, delim); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtol.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtol.c deleted file mode 100644 index 9efc8b9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtol.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE signed long -#define NAME strtol -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtoll.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtoll.c deleted file mode 100644 index a9428c7..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtoll.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE signed long long -#define NAME strtoll -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtoul.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtoul.c deleted file mode 100644 index 3189aaa..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtoul.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE unsigned long -#define NAME strtoul -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtoull.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtoull.c deleted file mode 100644 index 83c14e9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtoull.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE unsigned long long -#define NAME strtoull -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtoumax.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtoumax.c deleted file mode 100644 index a379710..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtoumax.c +++ /dev/null @@ -1,3 +0,0 @@ -#define TYPE uintmax_t -#define NAME strtoumax -#include "strtox.c" diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/strtox.c b/contrib/syslinux/syslinux-4.03/com32/lib/strtox.c deleted file mode 100644 index e01247a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/strtox.c +++ /dev/null @@ -1,13 +0,0 @@ -/* - * strtox.c - * - * strto...() functions, by macro definition - */ - -#include <stddef.h> -#include <inttypes.h> - -TYPE NAME(const char *nptr, char **endptr, int base) -{ - return (TYPE) strntoumax(nptr, endptr, base, ~(size_t) 0); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.c deleted file mode 100644 index f73c03e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.c +++ /dev/null @@ -1,444 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * ansi.c - * - * ANSI character code engine - */ - -#include <string.h> -#include <colortbl.h> -#include "ansi.h" - -static const struct term_state default_state = { - .state = st_init, - .pvt = false, - .nparms = 0, - .xy = {0, 0}, - .cindex = 0, /* First color table entry */ - .vtgraphics = false, - .intensity = 1, - .underline = false, - .blink = false, - .reverse = false, - .fg = 7, - .bg = 0, - .autocr = true, /* Mimic \n -> \r\n conversion by default */ - .autowrap = true, /* Wrap lines by default */ - .saved_xy = {0, 0}, - .cursor = true, -}; - -/* DEC VT graphics to codepage 437 table (characters 0x60-0x7F only) */ -static const char decvt_to_cp437[] = { - 0004, 0261, 0007, 0007, 0007, 0007, 0370, 0361, - 0007, 0007, 0331, 0277, 0332, 0300, 0305, 0304, - 0304, 0304, 0137, 0137, 0303, 0264, 0301, 0302, - 0263, 0363, 0362, 0343, 0330, 0234, 0007, 00 -}; - -void __ansi_init(const struct term_info *ti) -{ - memcpy(ti->ts, &default_state, sizeof default_state); -} - -void __ansi_putchar(const struct term_info *ti, uint8_t ch) -{ - const struct ansi_ops *op = ti->op; - struct term_state *st = ti->ts; - const int rows = ti->rows; - const int cols = ti->cols; - struct curxy xy = st->xy; - - switch (st->state) { - case st_init: - switch (ch) { - case 1 ... 5: - st->state = st_tbl; - st->parms[0] = ch; - break; - case '\a': - op->beep(); - break; - case '\b': - if (xy.x > 0) - xy.x--; - break; - case '\t': - { - int nsp = 8 - (xy.x & 7); - while (nsp--) - __ansi_putchar(ti, ' '); - } - return; /* Cursor already updated */ - case '\n': - case '\v': - case '\f': - xy.y++; - if (st->autocr) - xy.x = 0; - break; - case '\r': - xy.x = 0; - break; - case 127: - /* Ignore delete */ - break; - case 14: - st->vtgraphics = 1; - break; - case 15: - st->vtgraphics = 0; - break; - case 27: - st->state = st_esc; - break; - default: - /* Print character */ - if (ch >= 32) { - if (st->vtgraphics && (ch & 0xe0) == 0x60) - ch = decvt_to_cp437[ch - 0x60]; - - op->write_char(xy.x, xy.y, ch, st); - xy.x++; - } - break; - } - break; - - case st_esc: - switch (ch) { - case '%': - case '(': - case ')': - case '#': - /* Ignore this plus the subsequent character, allows - compatibility with Linux sequence to set charset */ - break; - case '[': - st->state = st_csi; - st->nparms = 0; - st->pvt = false; - memset(st->parms, 0, sizeof st->parms); - break; - case 'c': - /* Reset terminal */ - memcpy(&st, &default_state, sizeof st); - op->erase(st, 0, 0, cols - 1, rows - 1); - xy.x = xy.y = 0; - st->state = st_init; - break; - default: - /* Ignore sequence */ - st->state = st_init; - break; - } - break; - - case st_csi: - { - int p0 = st->parms[0] ? st->parms[0] : 1; - - if (ch >= '0' && ch <= '9') { - st->parms[st->nparms] = st->parms[st->nparms] * 10 + (ch - '0'); - } else if (ch == ';') { - st->nparms++; - if (st->nparms >= ANSI_MAX_PARMS) - st->nparms = ANSI_MAX_PARMS - 1; - break; - } else if (ch == '?') { - st->pvt = true; - } else { - switch (ch) { - case 'A': - { - int y = xy.y - p0; - xy.y = (y < 0) ? 0 : y; - } - break; - case 'B': - { - int y = xy.y + p0; - xy.y = (y >= rows) ? rows - 1 : y; - } - break; - case 'C': - { - int x = xy.x + p0; - xy.x = (x >= cols) ? cols - 1 : x; - } - break; - case 'D': - { - int x = xy.x - p0; - xy.x = (x < 0) ? 0 : x; - } - break; - case 'E': - { - int y = xy.y + p0; - xy.y = (y >= rows) ? rows - 1 : y; - xy.x = 0; - } - break; - case 'F': - { - int y = xy.y - p0; - xy.y = (y < 0) ? 0 : y; - xy.x = 0; - } - break; - case 'G': - case '\'': - { - int x = st->parms[0] - 1; - xy.x = (x >= cols) ? cols - 1 : (x < 0) ? 0 : x; - } - break; - case 'H': - case 'f': - { - int y = st->parms[0] - 1; - int x = st->parms[1] - 1; - - xy.x = (x >= cols) ? cols - 1 : (x < 0) ? 0 : x; - xy.y = (y >= rows) ? rows - 1 : (y < 0) ? 0 : y; - } - break; - case 'J': - { - switch (st->parms[0]) { - case 0: - op->erase(st, xy.x, xy.y, cols - 1, xy.y); - if (xy.y < rows - 1) - op->erase(st, 0, xy.y + 1, cols - 1, rows - 1); - break; - - case 1: - if (xy.y > 0) - op->erase(st, 0, 0, cols - 1, xy.y - 1); - if (xy.y > 0) - op->erase(st, 0, xy.y, xy.x - 1, xy.y); - break; - - case 2: - op->erase(st, 0, 0, cols - 1, rows - 1); - break; - - default: - /* Ignore */ - break; - } - } - break; - case 'K': - { - switch (st->parms[0]) { - case 0: - op->erase(st, xy.x, xy.y, cols - 1, xy.y); - break; - - case 1: - if (xy.x > 0) - op->erase(st, 0, xy.y, xy.x - 1, xy.y); - break; - - case 2: - op->erase(st, 0, xy.y, cols - 1, xy.y); - break; - - default: - /* Ignore */ - break; - } - } - break; - case 'h': - case 'l': - { - bool set = (ch == 'h'); - switch (st->parms[0]) { - case 7: /* DECAWM */ - st->autowrap = set; - break; - case 20: /* LNM */ - st->autocr = set; - break; - case 25: /* DECTECM */ - st->cursor = set; - op->showcursor(st); - break; - default: - /* Ignore */ - break; - } - break; - } - case 'm': - { - static const int ansi2pc[8] = - { 0, 4, 2, 6, 1, 5, 3, 7 }; - - int i; - for (i = 0; i <= st->nparms; i++) { - int a = st->parms[i]; - switch (a) { - case 0: - st->fg = 7; - st->bg = 0; - st->intensity = 1; - st->underline = 0; - st->blink = 0; - st->reverse = 0; - break; - case 1: - st->intensity = 2; - break; - case 2: - st->intensity = 0; - break; - case 4: - st->underline = 1; - break; - case 5: - st->blink = 1; - break; - case 7: - st->reverse = 1; - break; - case 21: - case 22: - st->intensity = 1; - break; - case 24: - st->underline = 0; - break; - case 25: - st->blink = 0; - break; - case 27: - st->reverse = 0; - break; - case 30 ... 37: - st->fg = ansi2pc[a - 30]; - break; - case 38: - st->fg = 7; - st->underline = 1; - break; - case 39: - st->fg = 7; - st->underline = 0; - break; - case 40 ... 47: - st->bg = ansi2pc[a - 40]; - break; - case 49: - st->bg = 7; - break; - default: - /* Do nothing */ - break; - } - } - } - break; - case 's': - st->saved_xy = xy; - break; - case 'u': - xy = st->saved_xy; - break; - default: /* Includes CAN and SUB */ - break; /* Drop unknown sequence */ - } - st->state = st_init; - } - } - break; - - case st_tbl: - st->parms[1] = 0; - if (ch == '#') - st->state = st_tblc; - else - st->state = st_init; - break; - - case st_tblc: - { - unsigned int n = (unsigned char)ch - '0'; - const char *p; - - if (n < 10) { - st->parms[1] = st->parms[1] * 10 + n; - - if (!--st->parms[0]) { - if (st->parms[1] < console_color_table_size) { - /* Set the color table index */ - st->cindex = st->parms[1]; - - /* See if there are any other attributes we care about */ - p = console_color_table[st->parms[1]].ansi; - if (p) { - st->state = st_esc; - __ansi_putchar(ti, '['); - __ansi_putchar(ti, '0'); - __ansi_putchar(ti, ';'); - while (*p) - __ansi_putchar(ti, *p++); - __ansi_putchar(ti, 'm'); - } - } - st->state = st_init; - } - } else { - st->state = st_init; - } - } - break; - } - - /* If we fell off the end of the screen, adjust */ - if (xy.x >= cols) { - if (st->autowrap) { - xy.x = 0; - xy.y++; - } else { - xy.x = cols - 1; - } - } - while (xy.y >= rows) { - xy.y--; - op->scroll_up(st); - } - - /* Update cursor position */ - op->set_cursor(xy.x, xy.y, st->cursor); - st->xy = xy; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.h deleted file mode 100644 index 7ccafc8..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansi.h +++ /dev/null @@ -1,66 +0,0 @@ -/* - * ansi.h - */ - -#ifndef COM32_LIB_SYS_ANSI_H -#define COM32_LIB_SYS_ANSI_H - -#include <inttypes.h> -#include <stdbool.h> - -#define ANSI_MAX_PARMS 16 - -enum ansi_state { - st_init, - st_esc, - st_csi, - st_tbl, - st_tblc, -}; - -struct curxy { - uint8_t x, y; -} __attribute__ ((packed)); - -struct term_state { - enum ansi_state state; - int nparms; /* Number of parameters seen */ - int parms[ANSI_MAX_PARMS]; - bool pvt; /* Private code? */ - struct curxy xy; - struct curxy saved_xy; - uint8_t cindex; /* SOH color index */ - uint8_t fg; - uint8_t bg; - uint8_t intensity; - bool vtgraphics; /* VT graphics on/off */ - bool underline; - bool blink; - bool reverse; - bool autocr; - bool autowrap; - bool cursor; -}; - -struct ansi_ops { - void (*erase) (const struct term_state * st, int x0, int y0, int x1, - int y1); - void (*write_char) (int x, int y, uint8_t ch, const struct term_state * st); - void (*showcursor) (const struct term_state * st); - void (*scroll_up) (const struct term_state * st); - void (*set_cursor) (int x, int y, bool visible); - void (*beep) (void); -}; - -struct term_info { - int rows, cols; /* Screen size */ - int disabled; - struct term_state *ts; - const struct ansi_ops *op; -}; - -void __ansi_init(const struct term_info *ti); -void __ansi_putchar(const struct term_info *ti, uint8_t ch); -void __ansicon_beep(void); - -#endif /* COM32_LIB_SYS_ANSI_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansicon_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansicon_write.c deleted file mode 100644 index b25f2d2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansicon_write.c +++ /dev/null @@ -1,257 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * ansicon_write.c - * - * Write to the screen using ANSI control codes (about as capable as - * DOS' ANSI.SYS.) - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <colortbl.h> -#include <klibc/compiler.h> -#include <syslinux/config.h> -#include "file.h" -#include "ansi.h" - -static void ansicon_erase(const struct term_state *, int, int, int, int); -static void ansicon_write_char(int, int, uint8_t, const struct term_state *); -static void ansicon_showcursor(const struct term_state *); -static void ansicon_scroll_up(const struct term_state *); -static void ansicon_set_cursor(int, int, bool); - -static struct term_state ts; -struct ansi_ops __ansicon_ops = { - .erase = ansicon_erase, - .write_char = ansicon_write_char, - .showcursor = ansicon_showcursor, - .set_cursor = ansicon_set_cursor, - .scroll_up = ansicon_scroll_up, - .beep = __ansicon_beep, -}; - -static struct term_info ti = { - .disabled = 0, - .ts = &ts, - .op = &__ansicon_ops -}; - -#define BIOS_CURXY ((struct curxy *)0x450) /* Array for each page */ -#define BIOS_ROWS (*(uint8_t *)0x484) /* Minus one; if zero use 24 (= 25 lines) */ -#define BIOS_COLS (*(uint16_t *)0x44A) -#define BIOS_PAGE (*(uint8_t *)0x462) - -/* Reference counter to the screen, to keep track of if we need - reinitialization. */ -static int ansicon_counter = 0; - -static uint16_t cursor_type; /* Saved cursor pattern */ - -/* Common setup */ -int __ansicon_open(struct file_info *fp) -{ - static com32sys_t ireg; /* Auto-initalized to all zero */ - com32sys_t oreg; - - if (!ansicon_counter) { - /* Are we disabled? */ - if (syslinux_serial_console_info()->flowctl & 0x8000) { - ti.disabled = 1; - ti.rows = 25; - ti.cols = 80; - } else { - /* Force text mode */ - ireg.eax.w[0] = 0x0005; - __intcall(0x22, &ireg, NULL); - - /* Initial state */ - ti.rows = BIOS_ROWS ? BIOS_ROWS + 1 : 25; - ti.cols = BIOS_COLS; - __ansi_init(&ti); - - /* Get cursor shape and position */ - ireg.eax.b[1] = 0x03; - ireg.ebx.b[1] = BIOS_PAGE; - __intcall(0x10, &ireg, &oreg); - cursor_type = oreg.ecx.w[0]; - ti.ts->xy.x = oreg.edx.b[0]; - ti.ts->xy.y = oreg.edx.b[1]; - } - } - - fp->o.rows = ti.rows; - fp->o.cols = ti.cols; - - ansicon_counter++; - return 0; -} - -int __ansicon_close(struct file_info *fp) -{ - (void)fp; - - ansicon_counter--; - return 0; -} - -/* Turn ANSI attributes into VGA attributes */ -static uint8_t ansicon_attribute(const struct term_state *st) -{ - int bg = st->bg; - int fg; - - if (st->underline) - fg = 0x01; - else if (st->intensity == 0) - fg = 0x08; - else - fg = st->fg; - - if (st->reverse) { - bg = fg & 0x07; - fg &= 0x08; - fg |= st->bg; - } - - if (st->blink) - bg ^= 0x08; - - if (st->intensity == 2) - fg ^= 0x08; - - return (bg << 4) | fg; -} - -/* Erase a region of the screen */ -static void ansicon_erase(const struct term_state *st, - int x0, int y0, int x1, int y1) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0600; /* Clear window */ - ireg.ebx.b[1] = ansicon_attribute(st); - ireg.ecx.b[0] = x0; - ireg.ecx.b[1] = y0; - ireg.edx.b[0] = x1; - ireg.edx.b[1] = y1; - __intcall(0x10, &ireg, NULL); -} - -/* Show or hide the cursor */ -static void ansicon_showcursor(const struct term_state *st) -{ - static com32sys_t ireg; - - ireg.eax.b[1] = 0x01; - ireg.ecx.w[0] = st->cursor ? cursor_type : 0x2020; - __intcall(0x10, &ireg, NULL); -} - -static void ansicon_set_cursor(int x, int y, bool visible) -{ - const int page = BIOS_PAGE; - struct curxy xy = BIOS_CURXY[page]; - static com32sys_t ireg; - - (void)visible; - - if (xy.x != x || xy.y != y) { - ireg.eax.b[1] = 0x02; - ireg.ebx.b[1] = page; - ireg.edx.b[1] = y; - ireg.edx.b[0] = x; - __intcall(0x10, &ireg, NULL); - } -} - -static void ansicon_write_char(int x, int y, uint8_t ch, - const struct term_state *st) -{ - static com32sys_t ireg; - - ansicon_set_cursor(x, y, false); - - ireg.eax.b[1] = 0x09; - ireg.eax.b[0] = ch; - ireg.ebx.b[1] = BIOS_PAGE; - ireg.ebx.b[0] = ansicon_attribute(st); - ireg.ecx.w[0] = 1; - __intcall(0x10, &ireg, NULL); -} - -static void ansicon_scroll_up(const struct term_state *st) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0601; - ireg.ebx.b[1] = ansicon_attribute(st); - ireg.ecx.w[0] = 0; - ireg.edx.b[1] = ti.rows - 1; - ireg.edx.b[0] = ti.cols - 1; - __intcall(0x10, &ireg, NULL); /* Scroll */ -} - -ssize_t __ansicon_write(struct file_info *fp, const void *buf, size_t count) -{ - const unsigned char *bufp = buf; - size_t n = 0; - - (void)fp; - - if (ti.disabled) - return count; /* Nothing to do */ - - while (count--) { - __ansi_putchar(&ti, *bufp++); - n++; - } - - return n; -} - -void __ansicon_beep(void) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0e07; - ireg.ebx.b[1] = BIOS_PAGE; - __intcall(0x10, &ireg, NULL); -} - -const struct output_dev dev_ansicon_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __ansicon_write, - .close = __ansicon_close, - .open = __ansicon_open, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansiserial_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansiserial_write.c deleted file mode 100644 index 957d1c6..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ansiserial_write.c +++ /dev/null @@ -1,59 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * ansiserial_write.c - * - * Write to both to the ANSI console and the serial port - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -extern int __ansicon_open(struct file_info *); -extern int __ansicon_close(struct file_info *); -extern ssize_t __ansicon_write(struct file_info *, const void *, size_t); -extern ssize_t __xserial_write(struct file_info *, const void *, size_t); - -static ssize_t __ansiserial_write(struct file_info *fp, const void *buf, - size_t count) -{ - __ansicon_write(fp, buf, count); - return __xserial_write(fp, buf, count); -} - -const struct output_dev dev_ansiserial_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __ansiserial_write, - .close = __ansicon_close, - .open = __ansicon_open, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/argv.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/argv.c deleted file mode 100644 index db287c2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/argv.c +++ /dev/null @@ -1,97 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * argv.c - * - * Parse a single C string into argc and argv (argc is return value.) - * memptr points to available memory. - */ - -#include <inttypes.h> -#include <stddef.h> -#include <stdio.h> -#include <syslinux/align.h> -#include <com32.h> - -extern char _end[]; /* Symbol created by linker */ -void *__mem_end = &_end; /* Global variable for use by malloc() */ - -int __parse_argv(char ***argv, const char *str) -{ - char dummy_argv0[] = ""; - char *mem = __mem_end; - const char *p = str; - char *q = mem; - char *r; - char **arg; - int wasspace = 1; - int argc = 1; - - /* First copy the string, turning whitespace runs into nulls */ - for (p = str;; p++) { - if (*p <= ' ') { - if (!wasspace) { - wasspace = 1; - *q++ = '\0'; - } - } else { - if (wasspace) { - argc++; - wasspace = 0; - } - *q++ = *p; - } - - /* This test is AFTER we have processed the null byte; - we treat it as a whitespace character so it terminates - the last argument */ - if (!*p) - break; - } - - /* Now create argv */ - arg = (char **)ALIGN_UP_FOR(q, char *); - *argv = arg; - *arg++ = __com32.cs_name ? (char *)__com32.cs_name : dummy_argv0; /* argv[0] */ - - q--; /* Point q to final null */ - if (mem < q) - *arg++ = mem; /* argv[1] */ - - for (r = mem; r < q; r++) { - if (*r == '\0') { - *arg++ = r + 1; - } - } - - *arg++ = NULL; /* Null pointer at the end */ - __mem_end = arg; /* End of memory we used */ - - return argc; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/cfarcall.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/cfarcall.c deleted file mode 100644 index fca818b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/cfarcall.c +++ /dev/null @@ -1,10 +0,0 @@ -/* - * cfarcall.c - */ - -#include <com32.h> - -int __cfarcall(uint16_t cs, uint16_t ip, const void *stack, uint32_t stack_size) -{ - return __com32.cs_cfarcall((cs << 16) + ip, stack, stack_size); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/close.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/close.c deleted file mode 100644 index 50d9a42..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/close.c +++ /dev/null @@ -1,62 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * close.c - */ - -#include <errno.h> -#include <com32.h> -#include <string.h> -#include "file.h" - -int close(int fd) -{ - struct file_info *fp = &__file_info[fd]; - int rv = 0; - - if (fd >= NFILES || !fp->iop || !fp->oop) { - errno = EBADF; - return -1; - } - - if (fp->iop->close) { - rv = fp->iop->close(fp); - if (rv) - return rv; - } - fp->iop = &dev_error_r; - - if (fp->oop->close) { - rv = fp->oop->close(fp); - if (rv) - return rv; - } - - memset(fp, 0, sizeof *fp); /* File structure unused */ - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/colortable.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/colortable.c deleted file mode 100644 index ab1c424..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/colortable.c +++ /dev/null @@ -1,9 +0,0 @@ -#include <colortbl.h> - -static struct color_table default_color_table[] = { - {"default", "0", 0xffffffff, 0x00000000, SHADOW_NORMAL} -}; - -struct color_table *console_color_table = default_color_table; -int console_color_table_size = - (sizeof default_color_table / sizeof(struct color_table)); diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/entry.S b/contrib/syslinux/syslinux-4.03/com32/lib/sys/entry.S deleted file mode 100644 index 7bfde8b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/entry.S +++ /dev/null @@ -1,118 +0,0 @@ -/* ----------------------------------------------------------------------- - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * COM32 start up code - must be linked first in the binary - */ - -/* Number of arguments in our version of the entry structure */ -#define COM32_ARGS 9 - - .section ".init","ax" - .globl _start - .type _start, @function -_start: - /* This first instruction acts as COM32R magic number */ - movl $0x21cd4cfe,%eax - - /* Upwards string operations */ - cld - - /* Find our own location */ - call 1f -1: popl %ebx - addl $_GLOBAL_OFFSET_TABLE_ + (. - 1b), %ebx - - /* Process relocations (which overlay the .bss segment) */ - leal _edata@GOTOFF(%ebx),%esi - leal _start@GOTOFF(%ebx),%edx -2: lodsl - andl %eax,%eax - jz 3f - addl %edx,(%eax,%edx) - jmp 2b -3: - /* Relocate the GOT (is this right?) */ - leal __got_start@GOTOFF(%ebx),%esi - leal __got_end@GOTOFF(%ebx),%edi -4: - addl %edx,(%esi) - addl $4,%esi - cmpl %edi,%esi - jb 4b - - /* Zero the .bss segment */ - xorl %eax,%eax - leal __bss_start@GOTOFF(%ebx),%edi - leal _end+3@GOTOFF(%ebx),%ecx - subl %edi,%ecx - shrl $2,%ecx - rep ; stosl - - /* Copy COM32 invocation parameters */ - leal 4(%esp),%esi # Argument list - leal __com32@GOTOFF(%ebx),%edi - movl $(COM32_ARGS),%ecx - movl %esp,-4(%edi) # Save the initial stack ptr - cmpl (%esi),%ecx - jbe 5f - movl (%esi),%ecx -5: inc %ecx # Copy the argument count, too - rep ; movsl - - /* Parse the command line (assumes REGPARM) */ - movl __com32+4@GOTOFF(%ebx),%edx # Command line - pushl %edx # Make space for argv - movl %esp,%eax - call __parse_argv - pushl %eax # Save argc - - /* Look for library initialization functions */ - leal __ctors_start@GOTOFF(%ebx),%esi - leal __ctors_end@GOTOFF(%ebx),%edi -6: - cmpl %edi,%esi - jae 7f - call *(%esi) - addl $4,%esi - jmp 6b -/* - * Actually run main. This assumes REGPARM is used!!!! - */ -7: - popl %eax # argc - popl %edx # argv - call main - call *__exit_handler@GOTOFF(%ebx) - hlt - .size _start, .-_start - - .bss - .globl __entry_esp -__entry_esp: .space 4 - .globl __com32 -__com32: .space 4*(COM32_ARGS+1) diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_read.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_read.c deleted file mode 100644 index 22555ca..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_read.c +++ /dev/null @@ -1,55 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * err_read.c - * - * Reading from a device which doesn't support reading - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -static ssize_t __err_read(struct file_info *fp, void *buf, size_t count) -{ - (void)fp; - (void)buf; - (void)count; - errno = -EINVAL; - return -1; -} - -const struct input_dev dev_error_r = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_INPUT | __DEV_ERROR, - .fileflags = O_RDONLY, - .read = __err_read, - .close = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_write.c deleted file mode 100644 index fab60ba..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/err_write.c +++ /dev/null @@ -1,55 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * err_write.c - * - * Writing to a device which doesn't support writing - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -static ssize_t __err_write(struct file_info *fp, const void *buf, size_t count) -{ - (void)fp; - (void)buf; - (void)count; - errno = -EINVAL; - return -1; -} - -const struct output_dev dev_error_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_OUTPUT | __DEV_ERROR, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __err_write, - .close = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/exit.S b/contrib/syslinux/syslinux-4.03/com32/lib/sys/exit.S deleted file mode 100644 index 2ab8012..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/exit.S +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Implementation of _exit() for com32 based on c32entry.S - */ - .text - - .globl _Exit - .type _Exit, @function -_Exit: - /* Just fall through to _exit */ - .size _Exit, .-_Exit - - .globl _exit - .type _exit, @function -_exit: -#ifdef REGPARM - pushl %eax -#endif - - /* Run any destructors */ - movl $__dtors_start, %esi -2: - cmpl $__dtors_end, %esi - jae 1f - call *(%esi) - addl $4,%esi - jmp 2b - -1: -#ifdef REGPARM - popl %eax -#else - movl 4(%esp),%eax # Exit code in %eax = return value -#endif - movl (__entry_esp),%esp # Return stack pointer to entry value - ret # Return to termination address - .size _exit, .-_exit - - .data -__exit_handler: - .globl __exit_handler - .long _exit diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/farcall.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/farcall.c deleted file mode 100644 index 988ee6d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/farcall.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - * farcall.c - */ - -#include <com32.h> - -static inline uint32_t eflags(void) -{ - uint32_t v; - - asm volatile("pushfl ; popl %0" : "=rm" (v)); - return v; -} - -void __farcall(uint16_t cs, uint16_t ip, - const com32sys_t * ireg, com32sys_t * oreg) -{ - com32sys_t xreg = *ireg; - - /* Enable interrupts if and only if they are enabled in the caller */ - xreg.eflags.l = (xreg.eflags.l & ~EFLAGS_IF) | (eflags() & EFLAGS_IF); - - __com32.cs_farcall((cs << 16) + ip, &xreg, oreg); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/file.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/file.h deleted file mode 100644 index e984f16..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/file.h +++ /dev/null @@ -1,106 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * file.h - * - * Internal implementation of file I/O for COM32 - */ - -#ifndef _COM32_SYS_FILE_H -#define _COM32_SYS_FILE_H - -#include <inttypes.h> -#include <stdlib.h> -#include <sys/types.h> -#include <dev.h> -#include <fcntl.h> -#include <syslinux/pmapi.h> - -/* Device structure; contains the relevant operations */ - -struct file_info; - -#define __DEV_MAGIC 0xf4e7 -#define __DEV_TTY 0x0001 /* TTY - must be bit 0 */ -#define __DEV_FILE 0x0002 /* Ordinary file */ -#define __DEV_OUTPUT 0x0004 /* This is an output device */ -#define __DEV_INPUT 0 /* Dummy */ -#define __DEV_ERROR 0x0008 /* This is the error device */ -#define __DEV_NULL 0x0010 /* This is the null device */ - -struct input_dev { - uint16_t dev_magic; /* Magic number */ - uint16_t flags; /* Flags */ - int fileflags; /* Permitted file flags */ - ssize_t (*read)(struct file_info *, void *, size_t); - int (*close)(struct file_info *); - int (*open)(struct file_info *); -}; - -struct output_dev { - uint16_t dev_magic; /* Magic number */ - uint16_t flags; /* Flags */ - int fileflags; - ssize_t (*write)(struct file_info *, const void *, size_t); - int (*close)(struct file_info *); - int (*open)(struct file_info *); - const struct output_dev *fallback; /* Fallback option for certain consoles */ -}; - -/* File structure */ - -#define NFILES 32 /* Number of files to support */ -#define MAXBLOCK 16384 /* Defined by ABI */ - -struct file_info { - const struct input_dev *iop; /* Input operations */ - const struct output_dev *oop; /* Output operations */ - - /* Output file data */ - struct { - int rows, cols; /* Rows and columns */ - } o; - - /* Structure used for input blocking */ - struct { - struct com32_filedata fd; - size_t offset; /* Current file offset */ - size_t nbytes; /* Number of bytes available in buffer */ - char *datap; /* Current data pointer */ - void *pvt; /* Private pointer for driver */ - char buf[MAXBLOCK]; - } i; -}; - -extern struct file_info __file_info[NFILES]; - -/* Line input discipline */ -ssize_t __line_input(struct file_info *fp, char *buf, size_t bufsize, - ssize_t(*get_char) (struct file_info *, void *, size_t)); - -#endif /* _COM32_SYS_FILE_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileclose.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileclose.c deleted file mode 100644 index e2c929f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileclose.c +++ /dev/null @@ -1,45 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * fileclose.c - * - * Close an ordinary file - */ - -#include <errno.h> -#include <com32.h> -#include <string.h> -#include "file.h" - -int __file_close(struct file_info *fp) -{ - if (fp->i.fd.handle) - __com32.cs_pm->close_file(fp->i.fd.handle); - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileinfo.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileinfo.c deleted file mode 100644 index a1fc7c9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileinfo.c +++ /dev/null @@ -1,3 +0,0 @@ -#include "file.h" - -struct file_info __file_info[NFILES]; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileread.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileread.c deleted file mode 100644 index aab99c8..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fileread.c +++ /dev/null @@ -1,98 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * read.c - * - * Reading from a file - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <syslinux/pmapi.h> -#include <minmax.h> -#include "file.h" - -int __file_get_block(struct file_info *fp) -{ - ssize_t bytes_read; - - bytes_read = __com32.cs_pm->read_file(&fp->i.fd.handle, fp->i.buf, - MAXBLOCK >> fp->i.fd.blocklg2); - if (!bytes_read) { - errno = EIO; - return -1; - } - - fp->i.nbytes = bytes_read; - fp->i.datap = fp->i.buf; - return 0; -} - -ssize_t __file_read(struct file_info * fp, void *buf, size_t count) -{ - char *bufp = buf; - ssize_t n = 0; - size_t ncopy; - - while (count) { - if (fp->i.nbytes == 0) { - if (fp->i.offset >= fp->i.fd.size || !fp->i.fd.handle) - return n; /* As good as it gets... */ - - if (count > MAXBLOCK) { - /* Large transfer: copy directly, without buffering */ - ncopy = __com32.cs_pm->read_file(&fp->i.fd.handle, bufp, - count >> fp->i.fd.blocklg2); - if (!ncopy) { - errno = EIO; - return n ? n : -1; - } - - goto got_data; - } else { - if (__file_get_block(fp)) - return n ? n : -1; - } - } - - ncopy = min(count, fp->i.nbytes); - memcpy(bufp, fp->i.datap, ncopy); - - fp->i.datap += ncopy; - fp->i.offset += ncopy; - fp->i.nbytes -= ncopy; - - got_data: - n += ncopy; - bufp += ncopy; - count -= ncopy; - } - - return n; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fstat.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/fstat.c deleted file mode 100644 index 0ce8cad..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/fstat.c +++ /dev/null @@ -1,63 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2005-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * fstat.c - * - * Very trivial fstat emulation - */ - -#include <sys/stat.h> -#include <errno.h> -#include "file.h" - -int fstat(int fd, struct stat *buf) -{ - struct file_info *fp = &__file_info[fd]; - - if (fd >= NFILES || !fp->iop) { - errno = EBADF; - return -1; - } - - if (fp->iop->flags & __DEV_FILE) { - if (fp->i.fd.size == (uint32_t) - 1) { - /* File of unknown length, report it as a socket - (it probably really is, anyway!) */ - buf->st_mode = S_IFSOCK | 0444; - buf->st_size = 0; - } else { - buf->st_mode = S_IFREG | 0444; - buf->st_size = fp->i.fd.size; - } - } else { - buf->st_mode = S_IFCHR | 0666; - buf->st_size = 0; - } - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ftell.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/ftell.c deleted file mode 100644 index 5c1a944..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/ftell.c +++ /dev/null @@ -1,16 +0,0 @@ -/* - * sys/ftell.c - * - * We can't seek, but we can at least tell... - */ - -#include <stdio.h> -#include "sys/file.h" - -long ftell(FILE * stream) -{ - int fd = fileno(stream); - struct file_info *fp = &__file_info[fd]; - - return fp->i.offset; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/gpxe.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/gpxe.c deleted file mode 100644 index d86da42..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/gpxe.c +++ /dev/null @@ -1,50 +0,0 @@ -#include <sys/gpxe.h> -#include <syslinux/config.h> -#include <string.h> - -bool is_gpxe(void) -{ - const struct syslinux_version *sv; - com32sys_t reg; - struct s_PXENV_FILE_CHECK_API *fca; - bool gpxe; - - sv = syslinux_version(); - if (sv->filesystem != SYSLINUX_FS_PXELINUX) - return false; /* Not PXELINUX */ - - fca = lzalloc(sizeof *fca); - if (!fca) - return false; - fca->Size = sizeof *fca; - fca->Magic = 0x91d447b2; - - memset(®, 0, sizeof reg); - reg.eax.w[0] = 0x0009; - reg.ebx.w[0] = 0x00e6; /* PXENV_FILE_API_CHECK */ - /* reg.edi.w[0] = OFFS(fca); */ - reg.es = SEG(fca); - - __intcall(0x22, ®, ®); - - gpxe = true; - - if (reg.eflags.l & EFLAGS_CF) - gpxe = false; /* Cannot invoke PXE stack */ - - if (reg.eax.w[0] || fca->Status) - gpxe = false; /* PXE failure */ - - if (fca->Magic != 0xe9c17b20) - gpxe = false; /* Incorrect magic */ - - if (fca->Size < sizeof *fca) - gpxe = false; /* Short return */ - - /* XXX: The APIs to test for should be a passed-in option */ - if (!(fca->APIMask & (1 << 5))) - gpxe = false; /* No FILE EXEC */ - - lfree(fca); - return gpxe; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/intcall.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/intcall.c deleted file mode 100644 index e97a384..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/intcall.c +++ /dev/null @@ -1,10 +0,0 @@ -/* - * intcall.c - */ - -#include <com32.h> - -void __intcall(uint8_t vector, const com32sys_t * ireg, com32sys_t * oreg) -{ - __com32.cs_intcall(vector, ireg, oreg); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/isatty.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/isatty.c deleted file mode 100644 index d80214a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/isatty.c +++ /dev/null @@ -1,53 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * isatty.c - * - * Return if this is a tty or not - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <unistd.h> -#include <klibc/compiler.h> -#include "file.h" - -int isatty(int fd) -{ - struct file_info *fp = &__file_info[fd]; - - if (fd >= NFILES || !fp->iop) { - errno = EBADF; - return -1; - } - - /* __DEV_TTY == 1 */ - return (fp->iop->flags & __DEV_TTY); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/libansi.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/libansi.c deleted file mode 100644 index a011cb8..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/libansi.c +++ /dev/null @@ -1,247 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2009 Erwan Velu - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- - * Ansi Sequences can be found here : - * http://ascii-table.com/ansi-escape-sequences-vt-100.php - * http://en.wikipedia.org/wiki/ANSI_escape_code - */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <stdbool.h> -#include <stdint.h> - -#include "libansi.h" - -void display_cursor(bool status) -{ - if (status == true) { - fputs(CSI "?25h", stdout); - } else { - fputs(CSI "?25l", stdout); - } -} - -void clear_end_of_line(void) -{ - fputs(CSI "0K", stdout); -} - -void move_cursor_left(int count) -{ - char buffer[10]; - memset(buffer,0,sizeof(buffer)); - sprintf(buffer,CSI "%dD",count); - fputs(buffer, stdout); -} - -void move_cursor_right(int count) -{ - char buffer[10]; - memset(buffer,0,sizeof(buffer)); - sprintf(buffer, CSI "%dC", count); - fputs(buffer, stdout); -} - -void set_cursor_blink(bool status) { - if (status == true) - fputs("\033[05m",stdout); - else - fputs("\033[0m",stdout); -} - -void clear_line(void) -{ - fputs(CSI "2K", stdout); -} - -void clear_beginning_of_line(void) -{ - fputs(CSI "1K", stdout); -} - -void move_cursor_to_column(int count) -{ - char buffer[10]; - memset(buffer,0,sizeof(buffer)); - sprintf(buffer, CSI "%dG", count); - fputs(buffer, stdout); -} - -void move_cursor_to_next_line(void) -{ - fputs("\033e", stdout); -} - -void disable_utf8(void) -{ - fputs("\033%@", stdout); -} - -void set_g1_special_char(void){ - fputs("\033)0", stdout); -} - -void set_us_g0_charset(void) -{ - fputs("\033(B\1#0", stdout); -} - -void clear_entire_screen(void) -{ - fputs(CSI "2J", stdout); -} - -/** - * cprint_vga2ansi - given a VGA attribute, print a character - * @chr: character to print - * @attr: vga attribute - * - * Convert the VGA attribute @attr to an ANSI escape sequence and - * print it. - * For performance, SGR parameters are cached. To reset them, - * call cprint_vga2ansi('0', '0'). - **/ -static void cprint_vga2ansi(const char chr, const char attr) -{ - static const char ansi_char[8] = "04261537"; - static uint16_t last_attr = 0x300; - char buf[16], *p; - - if (chr == '0' && attr == '0') { - last_attr = 0x300; - return; - } - - if (attr != last_attr) { - bool reset = false; - p = buf; - *p++ = '\033'; - *p++ = '['; - - if (last_attr & ~attr & 0x88) { - *p++ = '0'; - *p++ = ';'; - /* Reset last_attr to unknown to handle - * background/foreground attributes correctly */ - last_attr = 0x300; - reset = true; - } - if (attr & 0x08) { - *p++ = '1'; - *p++ = ';'; - } - if (attr & 0x80) { - *p++ = '4'; - *p++ = ';'; - } - if (reset || (attr ^ last_attr) & 0x07) { - *p++ = '3'; - *p++ = ansi_char[attr & 7]; - *p++ = ';'; - } - if (reset || (attr ^ last_attr) & 0x70) { - *p++ = '4'; - *p++ = ansi_char[(attr >> 4) & 7]; - *p++ = ';'; - } - p[-1] = 'm'; /* We'll have generated at least one semicolon */ - p[0] = '\0'; - - last_attr = attr; - - fputs(buf, stdout); - } - - putchar(chr); -} - -/* - * cls - clear and initialize the entire screen - * - * Note: when initializing xterm, one has to specify that - * G1 points to the alternate character set (this is not true - * by default). Without the initial printf "\033)0", line drawing - * characters won't be displayed. - */ -void cls(void) -{ - fputs("\033e\033%@\033)0\033(B\1#0\033[?25l\033[2J", stdout); - - /* Reset SGR parameters cache */ - cprint_vga2ansi('0', '0'); -} - -void reset_colors(void) -{ - csprint(CSI "1D", 0x07); -} - -/** - * cprint - given a VGA attribute, print a single character at cursor - * @chr: character to print - * @attr: VGA attribute - * @times: number of times to print @chr - * - * Note: @attr is a VGA attribute. - **/ -void cprint(const char chr, const char attr, unsigned int times) -{ - while (times--) - cprint_vga2ansi(chr, attr); -} - -/** - * csprint - given a VGA attribute, print a NULL-terminated string - * @str: string to print - * @attr: VGA attribute - **/ -void csprint(const char *str, const char attr) -{ - while (*str) { - cprint(*str, attr, 1); - str++; - } -} - -/** - * clearwindow - fill a given a region on the screen - * @top, @left, @bot, @right: coordinates to fill - * @fillchar: character to use to fill the region - * @fillattr: character attribute (VGA) - **/ -void clearwindow(const char top, const char left, const char bot, - const char right, const char fillchar, const char fillattr) -{ - char x; - for (x = top; x < bot + 1; x++) { - gotoxy(x, left); - cprint(fillchar, fillattr, right - left + 1); - } -} - - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/line_input.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/line_input.c deleted file mode 100644 index a8c9926..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/line_input.c +++ /dev/null @@ -1,90 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * line_input.c - * - * Line-oriented input discupline - */ - -#include "file.h" -#include <errno.h> -#include <syslinux/idle.h> - -ssize_t __line_input(struct file_info * fp, char *buf, size_t bufsize, - ssize_t(*get_char) (struct file_info *, void *, size_t)) -{ - size_t n = 0; - char ch; - int rv; - ssize_t(*const Write) (struct file_info *, const void *, size_t) = - fp->oop->write; - - for (;;) { - rv = get_char(fp, &ch, 1); - - if (rv != 1) { - syslinux_idle(); - continue; - } - - switch (ch) { - case '\n': /* Ignore incoming linefeed */ - break; - - case '\r': - *buf = '\n'; - Write(fp, "\n", 1); - return n + 1; - - case '\b': - if (n > 0) { - n--; - buf--; - Write(fp, "\b \b", 3); - } - break; - - case '\x15': /* Ctrl-U */ - while (n) { - n--; - buf--; - Write(fp, "\b \b", 3); - } - break; - - default: - if (n < bufsize - 1) { - *buf = ch; - Write(fp, buf, 1); - n++; - buf++; - } - break; - } - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_read.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_read.c deleted file mode 100644 index e0037c5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_read.c +++ /dev/null @@ -1,54 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * null_read.c - * - * Reading null device - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -static ssize_t __null_read(struct file_info *fp, void *buf, size_t count) -{ - (void)fp; - (void)buf; - (void)count; - return 0; -} - -const struct input_dev dev_null_r = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_INPUT | __DEV_NULL, - .fileflags = O_RDONLY, - .read = __null_read, - .close = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_write.c deleted file mode 100644 index a29b213..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/null_write.c +++ /dev/null @@ -1,54 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * null_write.c - * - * Null writing device - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -static ssize_t __null_write(struct file_info *fp, const void *buf, size_t count) -{ - (void)fp; - (void)buf; - (void)count; - return count; -} - -const struct output_dev dev_null_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_OUTPUT | __DEV_NULL, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __null_write, - .close = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/open.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/open.c deleted file mode 100644 index cb7c1b4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/open.c +++ /dev/null @@ -1,73 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <errno.h> -#include <com32.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include "file.h" - -/* - * open.c - * - * Open an ordinary file - */ - -extern ssize_t __file_read(struct file_info *, void *, size_t); -extern int __file_close(struct file_info *); - -const struct input_dev __file_dev = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_FILE | __DEV_INPUT, - .fileflags = O_RDONLY, - .read = __file_read, - .close = __file_close, - .open = NULL, -}; - -int open(const char *pathname, int flags, ...) -{ - int fd, handle; - struct file_info *fp; - - fd = opendev(&__file_dev, NULL, flags); - - if (fd < 0) - return -1; - - fp = &__file_info[fd]; - - handle = __com32.cs_pm->open_file(pathname, &fp->i.fd); - if (handle < 0) - return -1; - - fp->i.offset = 0; - fp->i.nbytes = 0; - - return fd; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/openconsole.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/openconsole.c deleted file mode 100644 index 3c7567b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/openconsole.c +++ /dev/null @@ -1,51 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * openconsole.c - * - * Open the chosen console device - */ - -#include <unistd.h> -#include <console.h> -#include <fcntl.h> - -int openconsole(const struct input_dev *idev, const struct output_dev *odev) -{ - close(0); - if (opendev(idev, odev, O_RDONLY) != 0) - return -1; - close(1); - if (opendev(idev, odev, O_WRONLY) != 1) - return -1; - close(2); - if (opendev(idev, odev, O_WRONLY) != 2) - return -1; - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/opendev.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/opendev.c deleted file mode 100644 index 1df9d07..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/opendev.c +++ /dev/null @@ -1,99 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <errno.h> -#include <com32.h> -#include <string.h> -#include <unistd.h> -#include "file.h" - -/* - * opendev.c - * - * Open a special device - */ - -int opendev(const struct input_dev *idev, - const struct output_dev *odev, int flags) -{ - int fd; - struct file_info *fp; - int okflags; - int e; - - okflags = (idev ? idev->fileflags : 0) | (odev ? odev->fileflags : 0); - - if (!(flags & 3) || (flags & ~okflags)) { - errno = EINVAL; - return -1; - } - - for (fd = 0, fp = __file_info; fd < NFILES; fd++, fp++) - if (!fp->iop && !fp->oop) - break; - - if (fd >= NFILES) { - errno = EMFILE; - return -1; - } - - /* The file structure is already zeroed */ - fp->iop = &dev_error_r; - fp->oop = &dev_error_w; - fp->i.datap = fp->i.buf; - - if (idev) { - if (idev->open && (e = idev->open(fp))) { - errno = e; - goto puke; - } - fp->iop = idev; - } - - while (odev) { - if (odev->open && (e = odev->open(fp))) { - if (e == EAGAIN) { - if (odev->fallback) { - odev = odev->fallback; - continue; - } else { - e = EIO; - } - } - errno = e; - goto puke; - } - fp->oop = odev; - break; - } - - return fd; - -puke: - close(fd); - return -1; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/openmem.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/openmem.c deleted file mode 100644 index a56a4af..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/openmem.c +++ /dev/null @@ -1,61 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <errno.h> -#include <com32.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include "file.h" - -/* - * openmem.c - * - * Open a chunk of memory as if it was a file - */ - -const struct input_dev __file_dev; - -int openmem(const void *base, size_t len, int flags) -{ - int fd; - struct file_info *fp; - - fd = opendev(&__file_dev, NULL, flags); - - if (fd < 0) - return -1; - - fp = &__file_info[fd]; - - fp->i.fd.size = fp->i.nbytes = len; - fp->i.datap = (void *)base; - fp->i.fd.handle = 0; /* No actual file */ - fp->i.offset = 0; - - return fd; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_read.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_read.c deleted file mode 100644 index 92c9b29..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_read.c +++ /dev/null @@ -1,80 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * rawcon_read.c - * - * Character-oriented reading from the console without echo; - * this is a NONBLOCKING device. - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <sys/times.h> -#include "file.h" - -/* Global, since it's used by stdcon_read */ -ssize_t __rawcon_read(struct file_info *fp, void *buf, size_t count) -{ - com32sys_t ireg, oreg; - char *bufp = buf; - size_t n = 0; - clock_t start; - - (void)fp; - - memset(&ireg, 0, sizeof ireg); - - start = times(NULL); - - while (n < count) { - /* Poll */ - ireg.eax.b[1] = 0x0B; - __intcall(0x21, &ireg, &oreg); - if (!oreg.eax.b[0]) - break; - - /* We have data, go get it */ - ireg.eax.b[1] = 0x08; - __intcall(0x21, &ireg, &oreg); - *bufp++ = oreg.eax.b[0]; - n++; - } - - return n; -} - -const struct input_dev dev_rawcon_r = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_INPUT, - .fileflags = O_RDONLY, - .read = __rawcon_read, - .close = NULL, - .open = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_write.c deleted file mode 100644 index 2d45a7b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/rawcon_write.c +++ /dev/null @@ -1,67 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * rawcon_write.c - * - * Raw writing to the console; no \n -> \r\n translation - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -static ssize_t __rawcon_write(struct file_info *fp, const void *buf, - size_t count) -{ - com32sys_t ireg; - const char *bufp = buf; - size_t n = 0; - - (void)fp; - - memset(&ireg, 0, sizeof ireg); - ireg.eax.b[1] = 0x02; - - while (count--) { - ireg.edx.b[0] = *bufp++; - __intcall(0x21, &ireg, NULL); - n++; - } - - return n; -} - -const struct output_dev dev_rawcon_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __rawcon_write, - .close = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/read.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/read.c deleted file mode 100644 index e097ade..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/read.c +++ /dev/null @@ -1,51 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * read.c - * - * Reading from a file descriptor - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <klibc/compiler.h> -#include "file.h" - -ssize_t read(int fd, void *buf, size_t count) -{ - struct file_info *fp = &__file_info[fd]; - - if (fd >= NFILES || !fp->iop) { - errno = EBADF; - return -1; - } - - return fp->iop->read(fp, buf, count); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/readdir.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/readdir.c deleted file mode 100644 index d2a8c03..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/readdir.c +++ /dev/null @@ -1,30 +0,0 @@ -/* - * readdir.c - */ - -#include <dirent.h> -#include <stdio.h> -#include <errno.h> - -#include <com32.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include <stdlib.h> - -#include <syslinux/pmapi.h> - -DIR *opendir(const char *pathname) -{ - return __com32.cs_pm->opendir(pathname); -} - -struct dirent *readdir(DIR *dir) -{ - return __com32.cs_pm->readdir(dir); -} - -int closedir(DIR *dir) -{ - return __com32.cs_pm->closedir(dir); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/screensize.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/screensize.c deleted file mode 100644 index 340227c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/screensize.c +++ /dev/null @@ -1,23 +0,0 @@ -#include <unistd.h> -#include <errno.h> -#include "file.h" - -int getscreensize(int fd, int *rows, int *cols) -{ - struct file_info *fp = &__file_info[fd]; - - if (fd >= NFILES || !fp->iop) { - errno = EBADF; - return -1; - } - - *rows = fp->o.rows; - *cols = fp->o.cols; - - if (!rows || !cols) { - errno = ENOTTY; - return -1; - } - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/serial_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/serial_write.c deleted file mode 100644 index fa0f4f4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/serial_write.c +++ /dev/null @@ -1,71 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * serial_write.c - * - * Raw writing to the serial port; no \n -> \r\n translation - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <syslinux/config.h> -#include "file.h" - -ssize_t __serial_write(struct file_info *fp, const void *buf, size_t count) -{ - com32sys_t ireg; - const char *bufp = buf; - size_t n = 0; - - (void)fp; - - if (!syslinux_serial_console_info()->iobase) - return count; /* Nothing to do */ - - memset(&ireg, 0, sizeof ireg); - ireg.eax.b[1] = 0x04; - - while (count--) { - ireg.edx.b[0] = *bufp++; - __intcall(0x21, &ireg, NULL); - n++; - } - - return n; -} - -const struct output_dev dev_serial_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __serial_write, - .close = NULL, - .open = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/sleep.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/sleep.c deleted file mode 100644 index 8a51c1c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/sleep.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * sys/sleep.c - */ - -#include <unistd.h> -#include <sys/times.h> -#include <syslinux/idle.h> - -unsigned int msleep(unsigned int msec) -{ - clock_t start = times(NULL); - - while (times(NULL) - start < msec) - syslinux_idle(); - - return 0; -} - -unsigned int sleep(unsigned int seconds) -{ - return msleep(seconds * 1000); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_read.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_read.c deleted file mode 100644 index 967e564..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_read.c +++ /dev/null @@ -1,76 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * stdcon_read.c - * - * Line-oriented reading from the standard console - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -extern ssize_t __rawcon_read(struct file_info *fp, void *buf, size_t count); - -static ssize_t __stdcon_read(struct file_info *fp, void *buf, size_t count) -{ - char *bufp = buf; - size_t n = 0; - char ch; - - (void)fp; - - while (n < count) { - if (fp->i.nbytes) { - ch = *bufp++ = *fp->i.datap++; - fp->i.nbytes--; - n++; - if (ch == '\n') - return n; - } else { - fp->i.nbytes = __line_input(fp, fp->i.buf, MAXBLOCK, __rawcon_read); - fp->i.datap = fp->i.buf; - - if (fp->i.nbytes == 0) - return n; - } - } - - return n; -} - -const struct input_dev dev_stdcon_r = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_INPUT, - .fileflags = O_RDONLY, - .read = __stdcon_read, - .close = NULL, - .open = NULL, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_write.c deleted file mode 100644 index 9cb2f7d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/stdcon_write.c +++ /dev/null @@ -1,89 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * stdcon_write.c - * - * Writing to the console; \n -> \r\n conversion. - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include "file.h" - -#define BIOS_ROWS (*(uint8_t *)0x484) /* Minus one; if zero use 24 (= 25 lines) */ -#define BIOS_COLS (*(uint16_t *)0x44A) - -static int __stdcon_open(struct file_info *fp) -{ - fp->o.rows = BIOS_ROWS + 1; - fp->o.cols = BIOS_COLS; - - /* Sanity check */ - if (fp->o.rows < 12) - fp->o.rows = 24; - if (fp->o.cols < 40) - fp->o.cols = 80; - - return 0; -} - -static ssize_t __stdcon_write(struct file_info *fp, const void *buf, - size_t count) -{ - com32sys_t ireg; - const char *bufp = buf; - size_t n = 0; - - (void)fp; - - memset(&ireg, 0, sizeof ireg); - ireg.eax.b[1] = 0x02; - - while (count--) { - if (*bufp == '\n') { - ireg.edx.b[0] = '\r'; - __intcall(0x21, &ireg, NULL); - } - ireg.edx.b[0] = *bufp++; - __intcall(0x21, &ireg, NULL); - n++; - } - - return n; -} - -const struct output_dev dev_stdcon_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __stdcon_write, - .close = NULL, - .open = __stdcon_open, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/times.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/times.c deleted file mode 100644 index dd063f3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/times.c +++ /dev/null @@ -1,42 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * sys/times.c - * - * Returns something like a clock. - */ - -#include <sys/times.h> -#include <syslinux/pmapi.h> -#include <com32.h> - -clock_t times(struct tms * buf) -{ - (void)buf; - return *__com32.cs_pm->ms_timer; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/alphatbl.pl b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/alphatbl.pl deleted file mode 100644 index d70c76e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/alphatbl.pl +++ /dev/null @@ -1,53 +0,0 @@ -#!/usr/bin/perl -# -# Produce gamma-correction tables for alpha blending, assuming sRGB space. -# - -sub srgb_to_linear($) -{ - my($s) = @_; - - if ($s <= 10) { - return $s/(255*12.92); - } else { - return (($s+14.025)/269.025)**2.4; - } -} - -sub linear_to_srgb($) -{ - my($l) = @_; - my $s; - - if ($l <= 0.00304) { - $s = 12.92*$l; - } else { - $s = 1.055*$l**(1.0/2.4) - 0.055; - } - - return int($s*255+0.5); -} - -# Header -print "#include <inttypes.h>\n\n"; - -# -# Table 1: convert 8-bit sRGB values to 16-bit linear values -# - -print "const uint16_t __vesacon_srgb_to_linear[256] = {\n"; -for ($i = 0; $i <= 255; $i++) { - printf "\t%5d,\n", int(srgb_to_linear($i)*65535+0.5); -} -print "};\n\n"; - -# -# Table 2: convert linear values in the range [0, 65535*255], -# shifted right by 12 bits, to sRGB -# - -print "const uint8_t __vesacon_linear_to_srgb[4080] = {\n"; -for ($i = 0; $i <= 4079; $i++) { - printf "\t%3d,\n", linear_to_srgb(($i+0.5)/4079.937744); -} -print "};\n\n"; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/background.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/background.c deleted file mode 100644 index 9357746..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/background.c +++ /dev/null @@ -1,456 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <stdio.h> -#include <png.h> -#include <tinyjpeg.h> -#include <com32.h> -#include <unistd.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <minmax.h> -#include <stdbool.h> -#include <ilog2.h> -#include <syslinux/loadfile.h> -#include "vesa.h" -#include "video.h" - -/*** FIX: This really should be alpha-blended with color index 0 ***/ - -/* For best performance, "start" should be a multiple of 4, to assure - aligned dwords. */ -static void draw_background_line(int line, int start, int npixels) -{ - uint32_t *bgptr = &__vesacon_background[line*__vesa_info.mi.h_res+start]; - unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel; - size_t fbptr = line * __vesa_info.mi.logical_scan + start*bytes_per_pixel; - - __vesacon_copy_to_screen(fbptr, bgptr, npixels); -} - -/* This draws the border, then redraws the text area */ -static void draw_background(void) -{ - int i; - const int bottom_border = VIDEO_BORDER + - (TEXT_PIXEL_ROWS % __vesacon_font_height); - const int right_border = VIDEO_BORDER + (TEXT_PIXEL_COLS % FONT_WIDTH); - - for (i = 0; i < VIDEO_BORDER; i++) - draw_background_line(i, 0, __vesa_info.mi.h_res); - - for (i = VIDEO_BORDER; i < __vesa_info.mi.v_res - bottom_border; i++) { - draw_background_line(i, 0, VIDEO_BORDER); - draw_background_line(i, __vesa_info.mi.h_res - right_border, - right_border); - } - - for (i = __vesa_info.mi.v_res - bottom_border; - i < __vesa_info.mi.v_res; i++) - draw_background_line(i, 0, __vesa_info.mi.h_res); - - __vesacon_redraw_text(); -} - -/* - * Tile an image in the UL corner across the entire screen - */ -static void tile_image(int width, int height) -{ - int xsize = __vesa_info.mi.h_res; - int ysize = __vesa_info.mi.v_res; - int x, y, yr; - int xl, yl; - uint32_t *sp, *dp, *drp, *dtp; - - drp = __vesacon_background; - for (y = 0 ; y < ysize ; y += height) { - yl = min(height, ysize-y); - dtp = drp; - for (x = 0 ; x < xsize ; x += width) { - xl = min(width, xsize-x); - if (x || y) { - sp = __vesacon_background; - dp = dtp; - for (yr = 0 ; yr < yl ; yr++) { - memcpy(dp, sp, xl*sizeof(uint32_t)); - dp += xsize; - sp += xsize; - } - } - dtp += xl; - } - drp += xsize*height; - } -} - -static int read_png_file(FILE * fp) -{ - png_structp png_ptr = NULL; - png_infop info_ptr = NULL; -#if 0 - png_color_16p image_background; - static const png_color_16 my_background = { 0, 0, 0, 0, 0 }; -#endif - png_bytep row_pointers[__vesa_info.mi.v_res], rp; - int i; - int rv = -1; - - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - info_ptr = png_create_info_struct(png_ptr); - - if (!png_ptr || !info_ptr || setjmp(png_jmpbuf(png_ptr))) - goto err; - - png_init_io(png_ptr, fp); - png_set_sig_bytes(png_ptr, 8); - - png_set_user_limits(png_ptr, __vesa_info.mi.h_res, __vesa_info.mi.v_res); - - png_read_info(png_ptr, info_ptr); - - /* Set the appropriate set of transformations. We need to end up - with 32-bit BGRA format, no more, no less. */ - - /* Expand to RGB first... */ - if (info_ptr->color_type & PNG_COLOR_MASK_PALETTE) - png_set_palette_to_rgb(png_ptr); - else if (!(info_ptr->color_type & PNG_COLOR_MASK_COLOR)) - png_set_gray_to_rgb(png_ptr); - - /* Add alpha channel, if need be */ - if (!(png_ptr->color_type & PNG_COLOR_MASK_ALPHA)) { - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) - png_set_tRNS_to_alpha(png_ptr); - else - png_set_add_alpha(png_ptr, ~0, PNG_FILLER_AFTER); - } - - /* Adjust the byte order, if necessary */ - png_set_bgr(png_ptr); - - /* Make sure we end up with 8-bit data */ - if (info_ptr->bit_depth == 16) - png_set_strip_16(png_ptr); - else if (info_ptr->bit_depth < 8) - png_set_packing(png_ptr); - -#if 0 - if (png_get_bKGD(png_ptr, info_ptr, &image_background)) - png_set_background(png_ptr, image_background, - PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); - else - png_set_background(png_ptr, &my_background, - PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); -#endif - - /* Whew! Now we should get the stuff we want... */ - rp = (png_bytep)__vesacon_background; - for (i = 0; i < (int)info_ptr->height; i++) { - row_pointers[i] = rp; - rp += __vesa_info.mi.h_res << 2; - } - - png_read_image(png_ptr, row_pointers); - - tile_image(info_ptr->width, info_ptr->height); - - rv = 0; - -err: - if (png_ptr) - png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp) NULL); - return rv; -} - -static int jpeg_sig_cmp(uint8_t * bytes, int len) -{ - (void)len; - - return (bytes[0] == 0xff && bytes[1] == 0xd8) ? 0 : -1; -} - -static int read_jpeg_file(FILE * fp, uint8_t * header, int len) -{ - struct jdec_private *jdec = NULL; - void *jpeg_file = NULL; - size_t length_of_file; - unsigned int width, height; - int rv = -1; - unsigned char *components[1]; - unsigned int bytes_per_row[1]; - - rv = floadfile(fp, &jpeg_file, &length_of_file, header, len); - fclose(fp); - if (rv) - goto err; - - jdec = tinyjpeg_init(); - if (!jdec) - goto err; - - if (tinyjpeg_parse_header(jdec, jpeg_file, length_of_file) < 0) - goto err; - - tinyjpeg_get_size(jdec, &width, &height); - if (width > __vesa_info.mi.h_res || height > __vesa_info.mi.v_res) - goto err; - - components[0] = (void *)__vesacon_background; - tinyjpeg_set_components(jdec, components, 1); - bytes_per_row[0] = __vesa_info.mi.h_res << 2; - tinyjpeg_set_bytes_per_row(jdec, bytes_per_row, 1); - - tinyjpeg_decode(jdec, TINYJPEG_FMT_BGRA32); - tile_image(width, height); - - rv = 0; - -err: - /* Don't use tinyjpeg_free() here, since we didn't allow tinyjpeg - to allocate the frame buffer */ - if (jdec) - free(jdec); - - if (jpeg_file) - free(jpeg_file); - - return rv; -} - -/* Simple grey Gaussian hole, enough to look interesting */ -int vesacon_default_background(void) -{ - int x, y, dx, dy, dy2; - int z; - unsigned int shft; - uint8_t *bgptr = (uint8_t *)__vesacon_background; - uint8_t k; - - if (__vesacon_pixel_format == PXF_NONE) - return 0; /* Not in graphics mode */ - - z = max(__vesa_info.mi.v_res, __vesa_info.mi.h_res) >> 1; - z = ((z*z) >> 11) - 1; - shft = ilog2(z) + 1; - - for (y = 0, dy = -(__vesa_info.mi.v_res >> 1); - y < __vesa_info.mi.v_res; y++, dy++) { - dy2 = dy * dy; - for (x = 0, dx = -(__vesa_info.mi.h_res >> 1); - x < __vesa_info.mi.h_res; x++, dx++) { - k = __vesacon_linear_to_srgb[500 + ((dx*dx + dy2) >> shft)]; - bgptr[0] = k; /* Blue */ - bgptr[1] = k; /* Green */ - bgptr[2] = k; /* Red */ - bgptr += 4; /* Dummy alpha */ - } - } - - draw_background(); - return 0; -} - -/* Set the background to a single flat color */ -int vesacon_set_background(unsigned int rgb) -{ - void *bgptr = __vesacon_background; - unsigned int count = __vesa_info.mi.h_res * __vesa_info.mi.v_res; - - if (__vesacon_pixel_format == PXF_NONE) - return 0; /* Not in graphics mode */ - - asm volatile ("rep; stosl":"+D" (bgptr), "+c"(count) - :"a"(rgb) - :"memory"); - - draw_background(); - return 0; -} - -struct lss16_header { - uint32_t magic; - uint16_t xsize; - uint16_t ysize; -}; - -#define LSS16_MAGIC 0x1413f33d - -static inline int lss16_sig_cmp(const void *header, int len) -{ - const struct lss16_header *h = header; - - if (len != 8) - return 1; - - return !(h->magic == LSS16_MAGIC && - h->xsize <= __vesa_info.mi.h_res && - h->ysize <= __vesa_info.mi.v_res); -} - -static int read_lss16_file(FILE * fp, const void *header, int header_len) -{ - const struct lss16_header *h = header; - uint32_t colors[16], color; - bool has_nybble; - uint8_t byte; - int count; - int nybble, prev; - enum state { - st_start, - st_c0, - st_c1, - st_c2, - } state; - int i, x, y; - uint32_t *bgptr = __vesacon_background; - - /* Assume the header, 8 bytes, has already been loaded. */ - if (header_len != 8) - return -1; - - for (i = 0; i < 16; i++) { - uint8_t rgb[3]; - if (fread(rgb, 1, 3, fp) != 3) - return -1; - - colors[i] = (((rgb[0] & 63) * 255 / 63) << 16) + - (((rgb[1] & 63) * 255 / 63) << 8) + - ((rgb[2] & 63) * 255 / 63); - } - - /* By spec, the state machine is per row */ - for (y = 0; y < h->ysize; y++) { - state = st_start; - has_nybble = false; - color = colors[prev = 0]; /* By specification */ - count = 0; - - x = 0; - while (x < h->xsize) { - if (!has_nybble) { - if (fread(&byte, 1, 1, fp) != 1) - return -1; - nybble = byte & 0xf; - has_nybble = true; - } else { - nybble = byte >> 4; - has_nybble = false; - } - - switch (state) { - case st_start: - if (nybble != prev) { - *bgptr++ = color = colors[prev = nybble]; - x++; - } else { - state = st_c0; - } - break; - - case st_c0: - if (nybble == 0) { - state = st_c1; - } else { - count = nybble; - goto do_run; - } - break; - - case st_c1: - count = nybble + 16; - state = st_c2; - break; - - case st_c2: - count += nybble << 4; - goto do_run; - -do_run: - count = min(count, h->xsize - x); - x += count; - asm volatile ("rep; stosl":"+D" (bgptr), - "+c"(count):"a"(color)); - state = st_start; - break; - } - } - - /* Zero-fill rest of row */ - i = __vesa_info.mi.h_res - x; - asm volatile ("rep; stosl":"+D" (bgptr), "+c"(i):"a"(0):"memory"); - } - - /* Zero-fill rest of screen */ - i = (__vesa_info.mi.v_res - y) * __vesa_info.mi.h_res; - asm volatile ("rep; stosl":"+D" (bgptr), "+c"(i):"a"(0):"memory"); - - return 0; -} - -int vesacon_load_background(const char *filename) -{ - FILE *fp = NULL; - uint8_t header[8]; - int rv = 1; - - if (__vesacon_pixel_format == PXF_NONE) - return 0; /* Not in graphics mode */ - - fp = fopen(filename, "r"); - - if (!fp) - goto err; - - if (fread(header, 1, 8, fp) != 8) - goto err; - - if (!png_sig_cmp(header, 0, 8)) { - rv = read_png_file(fp); - } else if (!jpeg_sig_cmp(header, 8)) { - rv = read_jpeg_file(fp, header, 8); - } else if (!lss16_sig_cmp(header, 8)) { - rv = read_lss16_file(fp, header, 8); - } - - /* This actually displays the stuff */ - draw_background(); - -err: - if (fp) - fclose(fp); - - return rv; -} - -int __vesacon_init_background(void) -{ - /* __vesacon_background was cleared by calloc() */ - - /* The VESA BIOS has already cleared the screen */ - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/debug.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/debug.h deleted file mode 100644 index 86d085f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/debug.h +++ /dev/null @@ -1,36 +0,0 @@ -#ifndef LIB_SYS_VESA_DEBUG_H -#define LIB_SYS_VESA_DEBUG_H - -#if 0 - -#include <stdio.h> -#include <unistd.h> - -ssize_t __serial_write(void *fp, const void *buf, size_t count); - -static void debug(const char *str, ...) -{ - va_list va; - char buf[65536]; - size_t len; - - va_start(va, str); - len = vsnprintf(buf, sizeof buf, str, va); - va_end(va); - - if (len >= sizeof buf) - len = sizeof buf - 1; - - __serial_write(NULL, buf, len); -} - -#else - -static inline void debug(const char *str, ...) -{ - (void)str; -} - -#endif - -#endif /* LIB_SYS_VESA_DEBUG_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/drawtxt.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/drawtxt.c deleted file mode 100644 index 85a9e97..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/drawtxt.c +++ /dev/null @@ -1,317 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <inttypes.h> -#include <colortbl.h> -#include <string.h> -#include "vesa.h" -#include "video.h" -#include "fill.h" - -/* - * Visible cursor information - */ -static uint8_t cursor_pattern[FONT_MAX_HEIGHT]; -static struct vesa_char *cursor_pointer = NULL; -static int cursor_x, cursor_y; - -static inline void *copy_dword(void *dst, void *src, size_t dword_count) -{ - asm volatile ("rep; movsl":"+D" (dst), "+S"(src), "+c"(dword_count)); - return dst; /* Updated destination pointer */ -} - -static inline __attribute__ ((always_inline)) -uint8_t alpha_val(uint8_t fg, uint8_t bg, uint8_t alpha) -{ - unsigned int tmp; - - tmp = __vesacon_srgb_to_linear[fg] * alpha; - tmp += __vesacon_srgb_to_linear[bg] * (255 - alpha); - - return __vesacon_linear_to_srgb[tmp >> 12]; -} - -static uint32_t alpha_pixel(uint32_t fg, uint32_t bg) -{ - uint8_t alpha = fg >> 24; - uint8_t fg_r = fg >> 16; - uint8_t fg_g = fg >> 8; - uint8_t fg_b = fg; - uint8_t bg_r = bg >> 16; - uint8_t bg_g = bg >> 8; - uint8_t bg_b = bg; - - return - (alpha_val(fg_r, bg_r, alpha) << 16) | - (alpha_val(fg_g, bg_g, alpha) << 8) | (alpha_val(fg_b, bg_b, alpha)); -} - -static void vesacon_update_characters(int row, int col, int nrows, int ncols) -{ - const int height = __vesacon_font_height; - const int width = FONT_WIDTH; - uint32_t *bgrowptr, *bgptr, bgval, fgval; - uint32_t fgcolor = 0, bgcolor = 0, color; - uint8_t chbits = 0, chxbits = 0, chsbits = 0; - int i, j, jx, pixrow, pixsrow; - struct vesa_char *rowptr, *rowsptr, *cptr, *csptr; - unsigned int bytes_per_pixel = __vesacon_bytes_per_pixel; - unsigned long pixel_offset; - uint32_t row_buffer[__vesa_info.mi.h_res], *rowbufptr; - size_t fbrowptr; - uint8_t sha; - - pixel_offset = ((row * height + VIDEO_BORDER) * __vesa_info.mi.h_res) + - (col * width + VIDEO_BORDER); - - bgrowptr = &__vesacon_background[pixel_offset]; - fbrowptr = (row * height + VIDEO_BORDER) * __vesa_info.mi.logical_scan + - (col * width + VIDEO_BORDER) * bytes_per_pixel; - - /* Note that we keep a 1-character guard area around the real text area... */ - rowptr = &__vesacon_text_display[(row+1)*(__vesacon_text_cols+2)+(col+1)]; - rowsptr = rowptr - ((__vesacon_text_cols+2)+1); - pixrow = 0; - pixsrow = height - 1; - - for (i = height * nrows; i >= 0; i--) { - bgptr = bgrowptr; - rowbufptr = row_buffer; - - cptr = rowptr; - csptr = rowsptr; - - chsbits = __vesacon_graphics_font[csptr->ch][pixsrow]; - if (__unlikely(csptr == cursor_pointer)) - chsbits |= cursor_pattern[pixsrow]; - sha = console_color_table[csptr->attr].shadow; - chsbits &= (sha & 0x02) ? 0xff : 0x00; - chsbits ^= (sha & 0x01) ? 0xff : 0x00; - chsbits <<= (width - 2); - csptr++; - - /* Draw two pixels beyond the end of the line. One for the shadow, - and one to make sure we have a whole dword of data for the copy - operation at the end. Note that this code depends on the fact that - all characters begin on dword boundaries in the frame buffer. */ - - for (jx = 1, j = width * ncols + 1; j >= 0; j--) { - chbits <<= 1; - chsbits <<= 1; - chxbits <<= 1; - - switch (jx) { - case 1: - chbits = __vesacon_graphics_font[cptr->ch][pixrow]; - if (__unlikely(cptr == cursor_pointer)) - chbits |= cursor_pattern[pixrow]; - sha = console_color_table[cptr->attr].shadow; - chxbits = chbits; - chxbits &= (sha & 0x02) ? 0xff : 0x00; - chxbits ^= (sha & 0x01) ? 0xff : 0x00; - fgcolor = console_color_table[cptr->attr].argb_fg; - bgcolor = console_color_table[cptr->attr].argb_bg; - cptr++; - jx--; - break; - case 0: - chsbits = __vesacon_graphics_font[csptr->ch][pixsrow]; - if (__unlikely(csptr == cursor_pointer)) - chsbits |= cursor_pattern[pixsrow]; - sha = console_color_table[csptr->attr].shadow; - chsbits &= (sha & 0x02) ? 0xff : 0x00; - chsbits ^= (sha & 0x01) ? 0xff : 0x00; - csptr++; - jx = width - 1; - break; - default: - jx--; - break; - } - - /* If this pixel is raised, use the offsetted value */ - bgval = (chxbits & 0x80) - ? bgptr[__vesa_info.mi.h_res + 1] : *bgptr; - bgptr++; - - /* If this pixel is set, use the fg color, else the bg color */ - fgval = (chbits & 0x80) ? fgcolor : bgcolor; - - /* Produce the combined color pixel value */ - color = alpha_pixel(fgval, bgval); - - /* Apply the shadow (75% shadow) */ - if ((chsbits & ~chxbits) & 0x80) { - color >>= 2; - color &= 0x3f3f3f; - } - - *rowbufptr++ = color; - } - - /* Copy to frame buffer */ - __vesacon_copy_to_screen(fbrowptr, row_buffer, rowbufptr - row_buffer); - - bgrowptr += __vesa_info.mi.h_res; - fbrowptr += __vesa_info.mi.logical_scan; - - if (++pixrow == height) { - rowptr += __vesacon_text_cols + 2; - pixrow = 0; - } - if (++pixsrow == height) { - rowsptr += __vesacon_text_cols + 2; - pixsrow = 0; - } - } -} - -/* Bounding box for changed text. The (x1, y1) coordinates are +1! */ -static unsigned int upd_x0 = -1U, upd_x1, upd_y0 = -1U, upd_y1; - -/* Update the range already touched by various variables */ -void __vesacon_doit(void) -{ - if (upd_x1 > upd_x0 && upd_y1 > upd_y0) { - vesacon_update_characters(upd_y0, upd_x0, upd_y1 - upd_y0, - upd_x1 - upd_x0); - upd_x0 = upd_y0 = -1U; - upd_x1 = upd_y1 = 0; - } -} - -/* Mark a range for update; note argument sequence is the same as - vesacon_update_characters() */ -static inline void vesacon_touch(int row, int col, int rows, int cols) -{ - unsigned int y0 = row; - unsigned int x0 = col; - unsigned int y1 = y0 + rows; - unsigned int x1 = x0 + cols; - - if (y0 < upd_y0) - upd_y0 = y0; - if (y1 > upd_y1) - upd_y1 = y1; - if (x0 < upd_x0) - upd_x0 = x0; - if (x1 > upd_x1) - upd_x1 = x1; -} - -/* Erase a region of the screen */ -void __vesacon_erase(int x0, int y0, int x1, int y1, attr_t attr) -{ - int y; - struct vesa_char *ptr = &__vesacon_text_display - [(y0 + 1) * (__vesacon_text_cols + 2) + (x0 + 1)]; - struct vesa_char fill = { - .ch = ' ', - .attr = attr, - }; - int ncols = x1 - x0 + 1; - - for (y = y0; y <= y1; y++) { - vesacon_fill(ptr, fill, ncols); - ptr += __vesacon_text_cols + 2; - } - - vesacon_touch(y0, x0, y1 - y0 + 1, ncols); -} - -/* Scroll the screen up */ -void __vesacon_scroll_up(int nrows, attr_t attr) -{ - struct vesa_char *fromptr = &__vesacon_text_display - [(nrows + 1) * (__vesacon_text_cols + 2)]; - struct vesa_char *toptr = &__vesacon_text_display - [(__vesacon_text_cols + 2)]; - int dword_count = - (__vesacon_text_rows - nrows) * (__vesacon_text_cols + 2); - struct vesa_char fill = { - .ch = ' ', - .attr = attr, - }; - - toptr = copy_dword(toptr, fromptr, dword_count); - - dword_count = nrows * (__vesacon_text_cols + 2); - - vesacon_fill(toptr, fill, dword_count); - - vesacon_touch(0, 0, __vesacon_text_rows, __vesacon_text_cols); -} - -/* Draw one character text at a specific area of the screen */ -void __vesacon_write_char(int x, int y, uint8_t ch, attr_t attr) -{ - struct vesa_char *ptr = &__vesacon_text_display - [(y + 1) * (__vesacon_text_cols + 2) + (x + 1)]; - - ptr->ch = ch; - ptr->attr = attr; - - vesacon_touch(y, x, 1, 1); -} - -void __vesacon_set_cursor(int x, int y, bool visible) -{ - struct vesa_char *ptr = &__vesacon_text_display - [(y + 1) * (__vesacon_text_cols + 2) + (x + 1)]; - - if (cursor_pointer) - vesacon_touch(cursor_y, cursor_x, 1, 1); - - if (!visible) { - /* Invisible cursor */ - cursor_pointer = NULL; - } else { - cursor_pointer = ptr; - vesacon_touch(y, x, 1, 1); - } - - cursor_x = x; - cursor_y = y; -} - -void __vesacon_init_cursor(int font_height) -{ - int r0 = font_height - (font_height < 10 ? 2 : 3); - - if (r0 < 0) - r0 = 0; - - memset(cursor_pattern, 0, font_height); - cursor_pattern[r0] = 0xff; - cursor_pattern[r0 + 1] = 0xff; -} - -void __vesacon_redraw_text(void) -{ - vesacon_update_characters(0, 0, __vesacon_text_rows, __vesacon_text_cols); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fill.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fill.h deleted file mode 100644 index 5a43c72..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fill.h +++ /dev/null @@ -1,63 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#ifndef LIB_SYS_VESA_FILL_H -#define LIB_SYS_VESA_FILL_H - -#include "video.h" - -/* Fill a number of characters. */ -static inline struct vesa_char *vesacon_fill(struct vesa_char *ptr, - struct vesa_char fill, - unsigned int count) -{ - switch (sizeof(struct vesa_char)) { - case 1: - asm volatile ("rep; stosb":"+D" (ptr), "+c"(count) - :"a"(fill) - :"memory"); - break; - case 2: - asm volatile ("rep; stosw":"+D" (ptr), "+c"(count) - :"a"(fill) - :"memory"); - break; - case 4: - asm volatile ("rep; stosl":"+D" (ptr), "+c"(count) - :"a"(fill) - :"memory"); - break; - default: - while (count--) - *ptr++ = fill; - break; - } - - return ptr; -} - -#endif /* LIB_SYS_VESA_FILL_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fmtpixel.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fmtpixel.c deleted file mode 100644 index 381fc21..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/fmtpixel.c +++ /dev/null @@ -1,101 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * fmtpixel.c - * - * Functions to format a single pixel - */ - -#include <inttypes.h> -#include "video.h" - -/* - * Format a sequence of pixels. The first argument is the line buffer; - * we can use it to write up to 4 bytes past the end of the last pixel. - * Return the place we should be copying from, this is usually the - * buffer address, but doesn't *have* to be. - */ - -static const void *format_pxf_bgra32(void *ptr, const uint32_t * p, size_t n) -{ - (void)ptr; - (void)n; - return p; /* No conversion needed! */ -} - -static const void *format_pxf_bgr24(void *ptr, const uint32_t * p, size_t n) -{ - char *q = ptr; - - while (n--) { - *(uint32_t *) q = *p++; - q += 3; - } - return ptr; -} - -static const void *format_pxf_le_rgb16_565(void *ptr, const uint32_t * p, - size_t n) -{ - uint32_t bgra; - uint16_t *q = ptr; - - while (n--) { - bgra = *p++; - *q++ = - ((bgra >> 3) & 0x1f) + - ((bgra >> (2 + 8 - 5)) & (0x3f << 5)) + - ((bgra >> (3 + 16 - 11)) & (0x1f << 11)); - } - return ptr; -} - -static const void *format_pxf_le_rgb15_555(void *ptr, const uint32_t * p, - size_t n) -{ - uint32_t bgra; - uint16_t *q = ptr; - - while (n--) { - bgra = *p++; - *q++ = - ((bgra >> 3) & 0x1f) + - ((bgra >> (2 + 8 - 5)) & (0x1f << 5)) + - ((bgra >> (3 + 16 - 10)) & (0x1f << 10)); - } - return ptr; -} - -__vesacon_format_pixels_t __vesacon_format_pixels; - -const __vesacon_format_pixels_t __vesacon_format_pixels_list[PXF_NONE] = { - [PXF_BGRA32] = format_pxf_bgra32, - [PXF_BGR24] = format_pxf_bgr24, - [PXF_LE_RGB16_565] = format_pxf_le_rgb16_565, - [PXF_LE_RGB15_555] = format_pxf_le_rgb15_555, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/i915resolution.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/i915resolution.c deleted file mode 100644 index 6ebb04d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/i915resolution.c +++ /dev/null @@ -1,795 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2010 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * Based on: - * - * 915 resolution by steve tomljenovic - * - * This was tested only on Sony VGN-FS550. Use at your own risk - * - * This code is based on the techniques used in : - * - * - 855patch. Many thanks to Christian Zietz (czietz gmx net) - * for demonstrating how to shadow the VBIOS into system RAM - * and then modify it. - * - * - 1280patch by Andrew Tipton (andrewtipton null li). - * - * - 855resolution by Alain Poirier - * - * This source code is into the public domain. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#define __USE_GNU -#include <string.h> -#include <sys/io.h> -#include <sys/cpu.h> -#include <sys/pci.h> -#include <unistd.h> -#include <assert.h> -#include <stdbool.h> -#include "video.h" -#include "debug.h" - -#define VBIOS_START 0xc0000 -#define VBIOS_SIZE 0x10000 - -#define MODE_TABLE_OFFSET_845G 617 - -#define VERSION "0.5.3" - -#define ATI_SIGNATURE1 "ATI MOBILITY RADEON" -#define ATI_SIGNATURE2 "ATI Technologies Inc" -#define NVIDIA_SIGNATURE "NVIDIA Corp" -#define INTEL_SIGNATURE "Intel Corp" - -typedef unsigned char * address; - -typedef enum { - CT_UNKWN, CT_830, CT_845G, CT_855GM, CT_865G, CT_915G, CT_915GM, - CT_945G, CT_945GM, CT_946GZ, CT_G965, CT_Q965, CT_945GME, - CHIPSET_TYPES -} chipset_type; - -typedef enum { - BT_UNKWN, BT_1, BT_2, BT_3 -} bios_type; - -static int freqs[] = { 60, 75, 85 }; - -typedef struct { - uint8_t mode; - uint8_t bits_per_pixel; - uint16_t resolution; - uint8_t unknown; -} __attribute__((packed)) vbios_mode; - -typedef struct { - uint16_t clock; /* Clock frequency in 10 kHz */ - uint8_t x1; - uint8_t x_total; - uint8_t x2; - uint8_t y1; - uint8_t y_total; - uint8_t y2; -} __attribute__((packed)) vbios_resolution_type1; - -typedef struct { - uint32_t clock; - - uint16_t x1; - uint16_t htotal; - uint16_t x2; - uint16_t hblank; - uint16_t hsyncstart; - uint16_t hsyncend; - - uint16_t y1; - uint16_t vtotal; - uint16_t y2; - uint16_t vblank; - uint16_t vsyncstart; - uint16_t vsyncend; -} __attribute__((packed)) vbios_modeline_type2; - -typedef struct { - uint8_t xchars; - uint8_t ychars; - uint8_t unknown[4]; - - vbios_modeline_type2 modelines[]; -} __attribute__((packed)) vbios_resolution_type2; - -typedef struct { - uint32_t clock; - - uint16_t x1; - uint16_t htotal; - uint16_t x2; - uint16_t hblank; - uint16_t hsyncstart; - uint16_t hsyncend; - - uint16_t y1; - uint16_t vtotal; - uint16_t y2; - uint16_t vblank; - uint16_t vsyncstart; - uint16_t vsyncend; - - uint16_t timing_h; - uint16_t timing_v; - - uint8_t unknown[6]; -} __attribute__((packed)) vbios_modeline_type3; - -typedef struct { - unsigned char unknown[6]; - - vbios_modeline_type3 modelines[]; -} __attribute__((packed)) vbios_resolution_type3; - - -typedef struct { - unsigned int chipset_id; - chipset_type chipset; - bios_type bios; - - address bios_ptr; - - vbios_mode * mode_table; - unsigned int mode_table_size; - - uint8_t b1, b2; - - bool unlocked; -} vbios_map; - -#if 0 /* Debugging hacks */ -static void good_marker(int x) -{ - ((uint16_t *)0xb8000)[x] = 0x2f30 - ((x & 0xf0) << 4) + (x & 0x0f); -} - -static void bad_marker(int x) -{ - ((uint16_t *)0xb8000)[x] = 0x4f30 - ((x & 0xf0) << 4) + (x & 0x0f); -} - -static void status(const char *fmt, ...) -{ - va_list ap; - char msg[81], *p; - int i; - uint16_t *q; - - memset(msg, 0, sizeof msg); - va_start(ap, fmt); - vsnprintf(msg, sizeof msg, fmt, ap); - va_end(ap); - p = msg; - q = (uint16_t *)0xb8000 + 80; - for (i = 0; i < 80; i++) - *q++ = *p++ + 0x1f00; -} -#else -static inline void good_marker(int x) { (void)x; } -static inline void bad_marker(int x) { (void)x; } -static inline void status(const char *fmt, ...) { (void)fmt; } -#endif - -static unsigned int get_chipset_id(void) { - return pci_readl(0x80000000); -} - -static chipset_type get_chipset(unsigned int id) { - chipset_type type; - - switch (id) { - case 0x35758086: - type = CT_830; - break; - - case 0x25608086: - type = CT_845G; - break; - - case 0x35808086: - type = CT_855GM; - break; - - case 0x25708086: - type = CT_865G; - break; - - case 0x25808086: - type = CT_915G; - break; - - case 0x25908086: - type = CT_915GM; - break; - - case 0x27708086: - type = CT_945G; - break; - - case 0x27a08086: - type = CT_945GM; - break; - - case 0x29708086: - type = CT_946GZ; - break; - - case 0x29a08086: - type = CT_G965; - break; - - case 0x29908086: - type = CT_Q965; - break; - - case 0x27ac8086: - type = CT_945GME; - break; - - default: - type = CT_UNKWN; - break; - } - - return type; -} - - -static vbios_resolution_type1 * map_type1_resolution(vbios_map * map, - uint16_t res) -{ - vbios_resolution_type1 * ptr = ((vbios_resolution_type1*)(map->bios_ptr + res)); - return ptr; -} - -static vbios_resolution_type2 * map_type2_resolution(vbios_map * map, - uint16_t res) -{ - vbios_resolution_type2 * ptr = ((vbios_resolution_type2*)(map->bios_ptr + res)); - return ptr; -} - -static vbios_resolution_type3 * map_type3_resolution(vbios_map * map, - uint16_t res) -{ - vbios_resolution_type3 * ptr = ((vbios_resolution_type3*)(map->bios_ptr + res)); - return ptr; -} - - -static bool detect_bios_type(vbios_map * map, int entry_size) -{ - unsigned int i; - uint16_t r1, r2; - - r1 = r2 = 32000; - - for (i = 0; i < map->mode_table_size; i++) { - if (map->mode_table[i].resolution <= r1) { - r1 = map->mode_table[i].resolution; - } else if (map->mode_table[i].resolution <= r2) { - r2 = map->mode_table[i].resolution; - } - } - - return ((r2-r1-6) % entry_size) == 0; -} - -static inline void close_vbios(vbios_map *map) -{ - (void)map; -} - -static vbios_map * open_vbios(void) -{ - static vbios_map _map; - vbios_map * const map = &_map; - - memset(&_map, 0, sizeof _map); - - /* - * Determine chipset - */ - map->chipset_id = get_chipset_id(); - good_marker(0x10); - map->chipset = get_chipset(map->chipset_id); - good_marker(0x11); - - /* - * Map the video bios to memory - */ - map->bios_ptr = (void *)VBIOS_START; - - /* - * check if we have ATI Radeon - */ - - if (memmem(map->bios_ptr, VBIOS_SIZE, ATI_SIGNATURE1, strlen(ATI_SIGNATURE1)) || - memmem(map->bios_ptr, VBIOS_SIZE, ATI_SIGNATURE2, strlen(ATI_SIGNATURE2)) ) { - debug("ATI chipset detected. 915resolution only works with Intel 800/900 series graphic chipsets.\r\n"); - return NULL; - } - - /* - * check if we have NVIDIA - */ - - if (memmem(map->bios_ptr, VBIOS_SIZE, NVIDIA_SIGNATURE, strlen(NVIDIA_SIGNATURE))) { - debug("NVIDIA chipset detected. 915resolution only works with Intel 800/900 series graphic chipsets.\r\n"); - return NULL; - } - - /* - * check if we have Intel - */ - - if (map->chipset == CT_UNKWN && memmem(map->bios_ptr, VBIOS_SIZE, INTEL_SIGNATURE, strlen(INTEL_SIGNATURE))) { - debug("Intel chipset detected. However, 915resolution was unable to determine the chipset type.\r\n"); - - debug("Chipset Id: %x\r\n", map->chipset_id); - - debug("Please report this problem to stomljen@yahoo.com\r\n"); - - close_vbios(map); - return NULL; - } - - /* - * check for others - */ - - if (map->chipset == CT_UNKWN) { - debug("Unknown chipset type and unrecognized bios.\r\n"); - debug("915resolution only works with Intel 800/900 series graphic chipsets.\r\n"); - - debug("Chipset Id: %x\r\n", map->chipset_id); - close_vbios(map); - return NULL; - } - - /* - * Figure out where the mode table is - */ - good_marker(0x12); - - { - address p = map->bios_ptr + 16; - address limit = map->bios_ptr + VBIOS_SIZE - (3 * sizeof(vbios_mode)); - - while (p < limit && map->mode_table == 0) { - vbios_mode * mode_ptr = (vbios_mode *) p; - - if (((mode_ptr[0].mode & 0xf0) == 0x30) && ((mode_ptr[1].mode & 0xf0) == 0x30) && - ((mode_ptr[2].mode & 0xf0) == 0x30) && ((mode_ptr[3].mode & 0xf0) == 0x30)) { - - map->mode_table = mode_ptr; - } - - p++; - } - - if (map->mode_table == 0) { - debug("Unable to locate the mode table.\r\n"); - close_vbios(map); - return NULL; - } - } - good_marker(0x13); - - /* - * Determine size of mode table - */ - - { - vbios_mode * mode_ptr = map->mode_table; - - while (mode_ptr->mode != 0xff) { - map->mode_table_size++; - mode_ptr++; - } - } - good_marker(0x14); - status("mode_table_size = %d", map->mode_table_size); - - /* - * Figure out what type of bios we have - * order of detection is important - */ - - if (detect_bios_type(map, sizeof(vbios_modeline_type3))) { - map->bios = BT_3; - } - else if (detect_bios_type(map, sizeof(vbios_modeline_type2))) { - map->bios = BT_2; - } - else if (detect_bios_type(map, sizeof(vbios_resolution_type1))) { - map->bios = BT_1; - } - else { - debug("Unable to determine bios type.\r\n"); - debug("Mode Table Offset: $C0000 + $%x\r\n", ((unsigned int)map->mode_table) - ((unsigned int)map->bios_ptr)); - debug("Mode Table Entries: %u\r\n", map->mode_table_size); - bad_marker(0x15); - return NULL; - } - good_marker(0x15); - - return map; -} - -static void unlock_vbios(vbios_map * map) -{ - assert(!map->unlocked); - - map->unlocked = true; - - switch (map->chipset) { - case CT_UNKWN: - case CHIPSET_TYPES: /* Shut up gcc */ - break; - case CT_830: - case CT_855GM: - map->b1 = pci_readb(0x8000005a); - pci_writeb(0x33, 0x8000005a); - break; - case CT_845G: - case CT_865G: - case CT_915G: - case CT_915GM: - case CT_945G: - case CT_945GM: - case CT_945GME: - case CT_946GZ: - case CT_G965: - case CT_Q965: - map->b1 = pci_readb(0x80000091); - map->b2 = pci_readb(0x80000092); - pci_writeb(0x33, 0x80000091); - pci_writeb(0x33, 0x80000092); - break; - } - -#if DEBUG - { - unsigned int t = inl(0xcfc); - debug("unlock PAM: (0x%08x)\r\n", t); - } -#endif -} - -static void relock_vbios(vbios_map * map) -{ - assert(map->unlocked); - map->unlocked = false; - - switch (map->chipset) { - case CT_UNKWN: - case CHIPSET_TYPES: /* Shut up gcc */ - break; - case CT_830: - case CT_855GM: - pci_writeb(map->b1, 0x8000005a); - break; - case CT_845G: - case CT_865G: - case CT_915G: - case CT_915GM: - case CT_945G: - case CT_945GM: - case CT_945GME: - case CT_946GZ: - case CT_G965: - case CT_Q965: - pci_writeb(map->b1, 0x80000091); - pci_writeb(map->b2, 0x80000092); - break; - } - -#if DEBUG - { - unsigned int t = inl(0xcfc); - debug("relock PAM: (0x%08x)\r\n", t); - } -#endif -} - -#if 0 -static void list_modes(vbios_map *map, unsigned int raw) -{ - unsigned int i, x, y; - - for (i=0; i < map->mode_table_size; i++) { - switch(map->bios) { - case BT_1: - { - vbios_resolution_type1 * res = map_type1_resolution(map, map->mode_table[i].resolution); - - x = ((((unsigned int) res->x2) & 0xf0) << 4) | res->x1; - y = ((((unsigned int) res->y2) & 0xf0) << 4) | res->y1; - - if (x != 0 && y != 0) { - debug("Mode %02x : %dx%d, %d bits/pixel\r\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel); - } - - if (raw) - { - debug("Mode %02x (raw) :\r\n\t%02x %02x\r\n\t%02x\r\n\t%02x\r\n\t%02x\r\n\t%02x\r\n\t%02x\r\n\t%02x\r\n", map->mode_table[i].mode, res->unknow1[0],res->unknow1[1], res->x1,res->x_total,res->x2,res->y1,res->y_total,res->y2); - } - - } - break; - case BT_2: - { - vbios_resolution_type2 * res = map_type2_resolution(map, map->mode_table[i].resolution); - - x = res->modelines[0].x1+1; - y = res->modelines[0].y1+1; - - if (x != 0 && y != 0) { - debug("Mode %02x : %dx%d, %d bits/pixel\r\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel); - } - } - break; - case BT_3: - { - vbios_resolution_type3 * res = map_type3_resolution(map, map->mode_table[i].resolution); - - x = res->modelines[0].x1+1; - y = res->modelines[0].y1+1; - - if (x != 0 && y != 0) { - debug("Mode %02x : %dx%d, %d bits/pixel\r\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel); - } - } - break; - case BT_UNKWN: - break; - } - } -} -#endif - -static void gtf_timings(int x, int y, int freq, uint32_t *clock, - uint16_t *hsyncstart, uint16_t *hsyncend, uint16_t *hblank, - uint16_t *vsyncstart, uint16_t *vsyncend, uint16_t *vblank) -{ - int hbl, vbl, vfreq; - - vbl = y + (y+1)/(20000.0/(11*freq) - 1) + 1.5; - vfreq = vbl * freq; - hbl = 16 * (int)(x * (30.0 - 300000.0 / vfreq) / - (70.0 + 300000.0 / vfreq) / 16.0 + 0.5); - - *vsyncstart = y; - *vsyncend = y + 3; - *vblank = vbl - 1; - *hsyncstart = x + hbl / 2 - (x + hbl + 50) / 100 * 8 - 1; - *hsyncend = x + hbl / 2 - 1; - *hblank = x + hbl - 1; - *clock = (x + hbl) * vfreq / 1000; -} - -static int set_mode(vbios_map * map, unsigned int mode, - unsigned int x, unsigned int y, unsigned int bp, - unsigned int htotal, unsigned int vtotal) -{ - int xprev, yprev; - unsigned int i, j; - int rv = -1; - - for (i=0; i < map->mode_table_size; i++) { - if (map->mode_table[i].mode == mode) { - switch(map->bios) { - case BT_1: - { - vbios_resolution_type1 * res = map_type1_resolution(map, map->mode_table[i].resolution); - uint32_t clock; - uint16_t hsyncstart, hsyncend, hblank; - uint16_t vsyncstart, vsyncend, vblank; - - if (bp) { - map->mode_table[i].bits_per_pixel = bp; - } - - gtf_timings(x, y, freqs[0], &clock, - &hsyncstart, &hsyncend, &hblank, - &vsyncstart, &vsyncend, &vblank); - - status("x = %d, y = %d, clock = %lu, h = %d %d %d, v = %d %d %d\n", - x, y, clock, - hsyncstart, hsyncend, hblank, - vsyncstart, vsyncend, vblank); - - htotal = htotal ? htotal : (unsigned int)hblank+1; - vtotal = vtotal ? vtotal : (unsigned int)vblank+1; - - res->clock = clock/10; /* Units appear to be 10 kHz */ - res->x2 = (((htotal-x) >> 8) & 0x0f) | ((x >> 4) & 0xf0); - res->x1 = (x & 0xff); - - res->y2 = (((vtotal-y) >> 8) & 0x0f) | ((y >> 4) & 0xf0); - res->y1 = (y & 0xff); - if (htotal) - res->x_total = ((htotal-x) & 0xff); - - if (vtotal) - res->y_total = ((vtotal-y) & 0xff); - - rv = 0; - } - break; - case BT_2: - { - vbios_resolution_type2 * res = map_type2_resolution(map, map->mode_table[i].resolution); - - res->xchars = x / 8; - res->ychars = y / 16 - 1; - xprev = res->modelines[0].x1; - yprev = res->modelines[0].y1; - - for(j=0; j < 3; j++) { - vbios_modeline_type2 * modeline = &res->modelines[j]; - - if (modeline->x1 == xprev && modeline->y1 == yprev) { - modeline->x1 = modeline->x2 = x-1; - modeline->y1 = modeline->y2 = y-1; - - gtf_timings(x, y, freqs[j], &modeline->clock, - &modeline->hsyncstart, &modeline->hsyncend, - &modeline->hblank, &modeline->vsyncstart, - &modeline->vsyncend, &modeline->vblank); - - if (htotal) - modeline->htotal = htotal; - else - modeline->htotal = modeline->hblank; - - if (vtotal) - modeline->vtotal = vtotal; - else - modeline->vtotal = modeline->vblank; - } - } - - rv = 0; - } - break; - case BT_3: - { - vbios_resolution_type3 * res = map_type3_resolution(map, map->mode_table[i].resolution); - - xprev = res->modelines[0].x1; - yprev = res->modelines[0].y1; - - for (j=0; j < 3; j++) { - vbios_modeline_type3 * modeline = &res->modelines[j]; - - if (modeline->x1 == xprev && modeline->y1 == yprev) { - modeline->x1 = modeline->x2 = x-1; - modeline->y1 = modeline->y2 = y-1; - - gtf_timings(x, y, freqs[j], &modeline->clock, - &modeline->hsyncstart, &modeline->hsyncend, - &modeline->hblank, &modeline->vsyncstart, - &modeline->vsyncend, &modeline->vblank); - if (htotal) - modeline->htotal = htotal; - else - modeline->htotal = modeline->hblank; - if (vtotal) - modeline->vtotal = vtotal; - else - modeline->vtotal = modeline->vblank; - - modeline->timing_h = y-1; - modeline->timing_v = x-1; - } - } - - rv = 0; - } - break; - case BT_UNKWN: - break; - } - } - } - - return rv; -} - -static inline void display_map_info(vbios_map * map) { -#ifdef DEBUG - static const char * bios_type_names[] = - {"UNKNOWN", "TYPE 1", "TYPE 2", "TYPE 3"}; - static const char * chipset_type_names[] = { - "UNKNOWN", "830", "845G", "855GM", "865G", "915G", "915GM", "945G", - "945GM", "946GZ", "G965", "Q965", "945GME" - }; - - debug("Chipset: %s\r\n", chipset_type_names[map->chipset]); - debug("BIOS: %s\r\n", bios_type_names[map->bios]); - - debug("Mode Table Offset: $C0000 + $%x\r\n", - ((unsigned int)map->mode_table) - ((unsigned int)map->bios_ptr)); - debug("Mode Table Entries: %u\r\n", map->mode_table_size); -#endif - (void)map; -} - -int __vesacon_i915resolution(int x, int y) -{ - vbios_map * map; - unsigned int mode = 0x52; /* 800x600x32 mode in known BIOSes */ - unsigned int bp = 32; /* 32 bits per pixel */ - int rv = 0; - - good_marker(0); - - map = open_vbios(); - if (!map) - return -1; - - good_marker(1); - - display_map_info(map); - - debug("\r\n"); - - if (mode && x && y) { - good_marker(2); - cli(); - good_marker(3); - unlock_vbios(map); - good_marker(4); - rv = set_mode(map, mode, x, y, bp, 0, 0); - if (rv) - bad_marker(5); - else - good_marker(5); - relock_vbios(map); - good_marker(6); - sti(); - - debug("Patch mode %02x to resolution %dx%d complete\r\n", mode, x, y); - } - close_vbios(map); - - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/initvesa.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/initvesa.c deleted file mode 100644 index 9a1ae38..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/initvesa.c +++ /dev/null @@ -1,357 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 1999-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initvesa.c - * - * Query the VESA BIOS and select a 640x480x32 mode with local mapping - * support, if one exists. - */ - -#include <inttypes.h> -#include <com32.h> -#include <stdlib.h> -#include <string.h> -#include <sys/fpu.h> -#include <syslinux/video.h> -#include "vesa.h" -#include "video.h" -#include "fill.h" -#include "debug.h" - -struct vesa_info __vesa_info; - -struct vesa_char *__vesacon_text_display; - -int __vesacon_font_height; -int __vesacon_text_rows; -int __vesacon_text_cols; -enum vesa_pixel_format __vesacon_pixel_format = PXF_NONE; -unsigned int __vesacon_bytes_per_pixel; -uint8_t __vesacon_graphics_font[FONT_MAX_CHARS][FONT_MAX_HEIGHT]; - -uint32_t *__vesacon_background, *__vesacon_shadowfb; - -static void unpack_font(uint8_t * dst, uint8_t * src, int height) -{ - int i; - - for (i = 0; i < FONT_MAX_CHARS; i++) { - memcpy(dst, src, height); - memset(dst + height, 0, FONT_MAX_HEIGHT - height); - - dst += FONT_MAX_HEIGHT; - src += height; - } -} - -static int __constfunc is_power_of_2(unsigned int x) -{ - return x && !(x & (x - 1)); -} - -static int vesacon_paged_mode_ok(const struct vesa_mode_info *mi) -{ - int i; - - if (!is_power_of_2(mi->win_size) || - !is_power_of_2(mi->win_grain) || mi->win_grain > mi->win_size) - return 0; /* Impossible... */ - - for (i = 0; i < 2; i++) { - if ((mi->win_attr[i] & 0x05) == 0x05 && mi->win_seg[i]) - return 1; /* Usable window */ - } - - return 0; /* Nope... */ -} - -static int vesacon_set_mode(int x, int y) -{ - com32sys_t rm; - uint8_t *rom_font; - uint16_t mode, bestmode, *mode_ptr; - struct vesa_info *vi; - struct vesa_general_info *gi; - struct vesa_mode_info *mi; - enum vesa_pixel_format pxf, bestpxf; - int err = 0; - - debug("Hello, World!\r\n"); - - /* Free any existing data structures */ - if (__vesacon_background) { - free(__vesacon_background); - __vesacon_background = NULL; - } - if (__vesacon_shadowfb) { - free(__vesacon_shadowfb); - __vesacon_shadowfb = NULL; - } - - /* Allocate space in the bounce buffer for these structures */ - vi = lzalloc(sizeof *vi); - if (!vi) { - err = 10; /* Out of memory */ - goto exit; - } - gi = &vi->gi; - mi = &vi->mi; - - memset(&rm, 0, sizeof rm); - - gi->signature = VBE2_MAGIC; /* Get VBE2 extended data */ - rm.eax.w[0] = 0x4F00; /* Get SVGA general information */ - rm.edi.w[0] = OFFS(gi); - rm.es = SEG(gi); - __intcall(0x10, &rm, &rm); - - if (rm.eax.w[0] != 0x004F) { - err = 1; /* Function call failed */ - goto exit; - } - if (gi->signature != VESA_MAGIC) { - err = 2; /* No magic */ - goto exit; - } - if (gi->version < 0x0102) { - err = 3; /* VESA 1.2+ required */ - goto exit; - } - - /* Copy general info */ - memcpy(&__vesa_info.gi, gi, sizeof *gi); - - /* Search for the proper mode with a suitable color and memory model... */ - - mode_ptr = GET_PTR(gi->video_mode_ptr); - bestmode = 0; - bestpxf = PXF_NONE; - - while ((mode = *mode_ptr++) != 0xFFFF) { - mode &= 0x1FF; /* The rest are attributes of sorts */ - - debug("Found mode: 0x%04x\r\n", mode); - - memset(mi, 0, sizeof *mi); - rm.eax.w[0] = 0x4F01; /* Get SVGA mode information */ - rm.ecx.w[0] = mode; - rm.edi.w[0] = OFFS(mi); - rm.es = SEG(mi); - __intcall(0x10, &rm, &rm); - - /* Must be a supported mode */ - if (rm.eax.w[0] != 0x004f) - continue; - - debug - ("mode_attr 0x%04x, h_res = %4d, v_res = %4d, bpp = %2d, layout = %d (%d,%d,%d)\r\n", - mi->mode_attr, mi->h_res, mi->v_res, mi->bpp, mi->memory_layout, - mi->rpos, mi->gpos, mi->bpos); - - /* Must be an LFB color graphics mode supported by the hardware. - - The bits tested are: - 4 - graphics mode - 3 - color mode - 1 - mode information available (mandatory in VBE 1.2+) - 0 - mode supported by hardware - */ - if ((mi->mode_attr & 0x001b) != 0x001b) - continue; - - /* Must be the chosen size */ - if (mi->h_res != x || mi->v_res != y) - continue; - - /* We don't support multibank (interlaced memory) modes */ - /* - * Note: The Bochs VESA BIOS (vbe.c 1.58 2006/08/19) violates the - * specification which states that banks == 1 for unbanked modes; - * fortunately it does report bank_size == 0 for those. - */ - if (mi->banks > 1 && mi->bank_size) { - debug("bad: banks = %d, banksize = %d, pages = %d\r\n", - mi->banks, mi->bank_size, mi->image_pages); - continue; - } - - /* Must be either a flat-framebuffer mode, or be an acceptable - paged mode */ - if (!(mi->mode_attr & 0x0080) && !vesacon_paged_mode_ok(mi)) { - debug("bad: invalid paged mode\r\n"); - continue; - } - - /* Must either be a packed-pixel mode or a direct color mode - (depending on VESA version ); must be a supported pixel format */ - pxf = PXF_NONE; /* Not usable */ - - if (mi->bpp == 32 && - (mi->memory_layout == 4 || - (mi->memory_layout == 6 && mi->rpos == 16 && mi->gpos == 8 && - mi->bpos == 0))) - pxf = PXF_BGRA32; - else if (mi->bpp == 24 && - (mi->memory_layout == 4 || - (mi->memory_layout == 6 && mi->rpos == 16 && mi->gpos == 8 && - mi->bpos == 0))) - pxf = PXF_BGR24; - else if (mi->bpp == 16 && - (mi->memory_layout == 4 || - (mi->memory_layout == 6 && mi->rpos == 11 && mi->gpos == 5 && - mi->bpos == 0))) - pxf = PXF_LE_RGB16_565; - else if (mi->bpp == 15 && - (mi->memory_layout == 4 || - (mi->memory_layout == 6 && mi->rpos == 10 && mi->gpos == 5 && - mi->bpos == 0))) - pxf = PXF_LE_RGB15_555; - - if (pxf < bestpxf) { - debug("Best mode so far, pxf = %d\r\n", pxf); - - /* Best mode so far... */ - bestmode = mode; - bestpxf = pxf; - - /* Copy mode info */ - memcpy(&__vesa_info.mi, mi, sizeof *mi); - } - } - - if (bestpxf == PXF_NONE) { - err = 4; /* No mode found */ - goto exit; - } - - mi = &__vesa_info.mi; - mode = bestmode; - __vesacon_bytes_per_pixel = (mi->bpp + 7) >> 3; - __vesacon_format_pixels = __vesacon_format_pixels_list[bestpxf]; - - /* Download the SYSLINUX- or BIOS-provided font */ - __vesacon_font_height = syslinux_font_query(&rom_font); - if (!__vesacon_font_height) { - /* Get BIOS 8x16 font */ - - rm.eax.w[0] = 0x1130; /* Get Font Information */ - rm.ebx.w[0] = 0x0600; /* Get 8x16 ROM font */ - __intcall(0x10, &rm, &rm); - rom_font = MK_PTR(rm.es, rm.ebp.w[0]); - __vesacon_font_height = 16; - } - unpack_font((uint8_t *) __vesacon_graphics_font, rom_font, - __vesacon_font_height); - - /* Now set video mode */ - rm.eax.w[0] = 0x4F02; /* Set SVGA video mode */ - if (mi->mode_attr & 0x0080) - mode |= 0x4000; /* Request linear framebuffer if supported */ - rm.ebx.w[0] = mode; - __intcall(0x10, &rm, &rm); - if (rm.eax.w[0] != 0x004F) { - err = 9; /* Failed to set mode */ - goto exit; - } - - __vesacon_background = calloc(mi->h_res*mi->v_res, 4); - __vesacon_shadowfb = calloc(mi->h_res*mi->v_res, 4); - - __vesacon_init_copy_to_screen(); - - /* Tell syslinux we changed video mode */ - /* In theory this should be: - - flags = (mi->mode_attr & 4) ? 0x0007 : 0x000f; - - However, that would assume all systems that claim to handle text - output in VESA modes actually do that... */ - syslinux_report_video_mode(0x000f, mi->h_res, mi->v_res); - - __vesacon_pixel_format = bestpxf; - -exit: - if (vi) - lfree(vi); - - return err; -} - -static int init_text_display(void) -{ - size_t nchars; - struct vesa_char *ptr; - struct vesa_char def_char = { - .ch = ' ', - .attr = 0, - }; - - if (__vesacon_text_display) - free(__vesacon_text_display); - - __vesacon_text_cols = TEXT_PIXEL_COLS / FONT_WIDTH; - __vesacon_text_rows = TEXT_PIXEL_ROWS / __vesacon_font_height; - nchars = (__vesacon_text_cols+2) * (__vesacon_text_rows+2); - - __vesacon_text_display = ptr = malloc(nchars * sizeof(struct vesa_char)); - - if (!ptr) - return -1; - - vesacon_fill(ptr, def_char, nchars); - __vesacon_init_cursor(__vesacon_font_height); - - return 0; -} - -int __vesacon_init(int x, int y) -{ - int rv; - - /* We need the FPU for graphics, at least libpng et al will need it... */ - if (x86_init_fpu()) - return 10; - - rv = vesacon_set_mode(x, y); - if (rv) { - /* Try to see if we can just patch the BIOS... */ - if (__vesacon_i915resolution(x, y)) - return rv; - if (vesacon_set_mode(x, y)) - return rv; - } - - init_text_display(); - - debug("Mode set, now drawing at %#p\r\n", __vesa_info.mi.lfb_ptr); - - __vesacon_init_background(); - - debug("Ready!\r\n"); - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/screencpy.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/screencpy.c deleted file mode 100644 index 32dce9e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/screencpy.c +++ /dev/null @@ -1,117 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <inttypes.h> -#include <minmax.h> -#include <klibc/compiler.h> -#include <string.h> -#include <com32.h> -#include <ilog2.h> -#include "vesa.h" -#include "video.h" - -static struct win_info { - char *win_base; - size_t win_pos; - size_t win_size; - int win_gshift; - int win_num; -} wi; - -void __vesacon_init_copy_to_screen(void) -{ - struct vesa_mode_info *const mi = &__vesa_info.mi; - int winn; - - if (mi->mode_attr & 0x0080) { - /* Linear frame buffer */ - - wi.win_base = (char *)mi->lfb_ptr; - wi.win_size = 1 << 31; /* 2 GB, i.e. one huge window */ - wi.win_pos = 0; /* Already positioned (only one position...) */ - wi.win_num = -1; /* Not a window */ - } else { - /* Paged frame buffer */ - - /* We have already tested that *one* of these is usable */ - if ((mi->win_attr[0] & 0x05) == 0x05 && mi->win_seg[0]) - winn = 0; - else - winn = 1; - - wi.win_num = winn; - wi.win_base = (char *)(mi->win_seg[winn] << 4); - wi.win_size = mi->win_size << 10; - wi.win_gshift = ilog2(mi->win_grain) + 10; - wi.win_pos = -1; /* Undefined position */ - } -} - -static void set_window_pos(size_t win_pos) -{ - static com32sys_t ireg; - - wi.win_pos = win_pos; - - if (wi.win_num < 0) - return; /* This should never happen... */ - - ireg.eax.w[0] = 0x4F05; - ireg.ebx.b[0] = wi.win_num; - ireg.edx.w[0] = win_pos >> wi.win_gshift; - - __intcall(0x10, &ireg, NULL); -} - -void __vesacon_copy_to_screen(size_t dst, const uint32_t * src, size_t npixels) -{ - size_t win_pos, win_off; - size_t win_size = wi.win_size; - size_t omask = win_size - 1; - char *win_base = wi.win_base; - size_t l; - size_t bytes = npixels * __vesacon_bytes_per_pixel; - char rowbuf[bytes + 4] __aligned(4); - const char *s; - - s = (const char *)__vesacon_format_pixels(rowbuf, src, npixels); - - while (bytes) { - win_off = dst & omask; - win_pos = dst & ~omask; - - if (__unlikely(win_pos != wi.win_pos)) - set_window_pos(win_pos); - - l = min(bytes, win_size - win_off); - memcpy(win_base + win_off, s, l); - - bytes -= l; - s += l; - dst += l; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/vesa.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/vesa.h deleted file mode 100644 index 3926c32..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/vesa.h +++ /dev/null @@ -1,114 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 1999-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#ifndef LIB_SYS_VESA_H -#define LIB_SYS_VESA_H - -#include <inttypes.h> -#include <com32.h> - -/* VESA General Information table */ -struct vesa_general_info { - uint32_t signature; /* Magic number = "VESA" */ - uint16_t version; - far_ptr_t vendor_string; - uint8_t capabilities[4]; - far_ptr_t video_mode_ptr; - uint16_t total_memory; - - uint16_t oem_software_rev; - far_ptr_t oem_vendor_name_ptr; - far_ptr_t oem_product_name_ptr; - far_ptr_t oem_product_rev_ptr; - - uint8_t reserved[222]; - uint8_t oem_data[256]; -} __attribute__ ((packed)); - -#define VESA_MAGIC ('V' + ('E' << 8) + ('S' << 16) + ('A' << 24)) -#define VBE2_MAGIC ('V' + ('B' << 8) + ('E' << 16) + ('2' << 24)) - -struct vesa_mode_info { - uint16_t mode_attr; - uint8_t win_attr[2]; - uint16_t win_grain; - uint16_t win_size; - uint16_t win_seg[2]; - far_ptr_t win_scheme; - uint16_t logical_scan; - - uint16_t h_res; - uint16_t v_res; - uint8_t char_width; - uint8_t char_height; - uint8_t memory_planes; - uint8_t bpp; - uint8_t banks; - uint8_t memory_layout; - uint8_t bank_size; - uint8_t image_pages; - uint8_t page_function; - - uint8_t rmask; - uint8_t rpos; - uint8_t gmask; - uint8_t gpos; - uint8_t bmask; - uint8_t bpos; - uint8_t resv_mask; - uint8_t resv_pos; - uint8_t dcm_info; - - uint8_t *lfb_ptr; /* Linear frame buffer address */ - uint8_t *offscreen_ptr; /* Offscreen memory address */ - uint16_t offscreen_size; - - uint8_t reserved[206]; -} __attribute__ ((packed)); - -struct vesa_info { - struct vesa_general_info gi; - struct vesa_mode_info mi; -}; - -extern struct vesa_info __vesa_info; - -#if 0 -static inline void vesa_debug(uint32_t color, int pos) -{ - uint32_t *stp = (uint32_t *) __vesa_info.mi.lfb_ptr; - stp[pos * 3] = color; -} -#else -static inline void vesa_debug(uint32_t color, int pos) -{ - (void)color; - (void)pos; -} -#endif - -#endif /* LIB_SYS_VESA_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/video.h b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/video.h deleted file mode 100644 index d14494b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/video.h +++ /dev/null @@ -1,97 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2006-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#ifndef LIB_SYS_VESA_VIDEO_H -#define LIB_SYS_VESA_VIDEO_H - -#include <stdbool.h> -#include <colortbl.h> -#include "vesa.h" - -#define FONT_MAX_CHARS 256 -#define FONT_MAX_HEIGHT 32 -#define FONT_WIDTH 8 - -#define DEFAULT_VESA_X_SIZE 640 -#define DEFAULT_VESA_Y_SIZE 480 - -#define VIDEO_BORDER 8 -#define TEXT_PIXEL_ROWS (__vesa_info.mi.v_res - 2*VIDEO_BORDER) -#define TEXT_PIXEL_COLS (__vesa_info.mi.h_res - 2*VIDEO_BORDER) - -typedef uint16_t attr_t; - -struct vesa_char { - uint8_t ch; /* Character */ - uint8_t _filler; /* Currently unused */ - attr_t attr; /* Color table index */ -}; - -/* Pixel formats in order of decreasing preference; PXF_NONE should be last */ -/* BGR24 is preferred over BGRA32 since the I/O overhead is smaller. */ -enum vesa_pixel_format { - PXF_BGR24, /* 24-bit BGR */ - PXF_BGRA32, /* 32-bit BGRA */ - PXF_LE_RGB16_565, /* 16-bit littleendian 5:6:5 RGB */ - PXF_LE_RGB15_555, /* 15-bit littleendian 5:5:5 RGB */ - PXF_NONE -}; -extern enum vesa_pixel_format __vesacon_pixel_format; -extern unsigned int __vesacon_bytes_per_pixel; -typedef const void *(*__vesacon_format_pixels_t) - (void *, const uint32_t *, size_t); -extern __vesacon_format_pixels_t __vesacon_format_pixels; -extern const __vesacon_format_pixels_t __vesacon_format_pixels_list[PXF_NONE]; - -extern struct vesa_char *__vesacon_text_display; - -extern int __vesacon_font_height; -extern int __vesacon_text_rows; -extern int __vesacon_text_cols; -extern uint8_t __vesacon_graphics_font[FONT_MAX_CHARS][FONT_MAX_HEIGHT]; -extern uint32_t *__vesacon_background; -extern uint32_t *__vesacon_shadowfb; - -extern const uint16_t __vesacon_srgb_to_linear[256]; -extern const uint8_t __vesacon_linear_to_srgb[4080]; - -int __vesacon_init_background(void); -int vesacon_load_background(const char *); -int __vesacon_init(int, int); -void __vesacon_init_cursor(int); -void __vesacon_erase(int, int, int, int, attr_t); -void __vesacon_scroll_up(int, attr_t); -void __vesacon_write_char(int, int, uint8_t, attr_t); -void __vesacon_redraw_text(void); -void __vesacon_doit(void); -void __vesacon_set_cursor(int, int, bool); -void __vesacon_copy_to_screen(size_t, const uint32_t *, size_t); -void __vesacon_init_copy_to_screen(void); - -int __vesacon_i915resolution(int x, int y); - -#endif /* LIB_SYS_VESA_VIDEO_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesacon_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesacon_write.c deleted file mode 100644 index 3769317..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesacon_write.c +++ /dev/null @@ -1,194 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * vesacon_write.c - * - * Write to the screen using ANSI control codes (about as capable as - * DOS' ANSI.SYS.) - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <colortbl.h> -#include <console.h> -#include <klibc/compiler.h> -#include <syslinux/config.h> -#include "ansi.h" -#include "file.h" -#include "vesa/video.h" - -static void vesacon_erase(const struct term_state *, int, int, int, int); -static void vesacon_write_char(int, int, uint8_t, const struct term_state *); -static void vesacon_showcursor(const struct term_state *); -static void vesacon_setcursor(int x, int y, bool visible); -static void vesacon_scroll_up(const struct term_state *); - -static struct term_state ts; -static struct ansi_ops op = { - .erase = vesacon_erase, - .write_char = vesacon_write_char, - .showcursor = vesacon_showcursor, - .set_cursor = vesacon_setcursor, - .scroll_up = vesacon_scroll_up, - .beep = __ansicon_beep, -}; - -static struct term_info ti = { - .disabled = 0, - .ts = &ts, - .op = &op -}; - -/* Reference counter to the screen, to keep track of if we need - reinitialization. */ -static int vesacon_counter = 0; - -static struct { - int x, y; -} vesacon_resolution = { - .x = DEFAULT_VESA_X_SIZE, - .y = DEFAULT_VESA_Y_SIZE, -}; - -/* Set desired resolution - requires a full close/open cycle */ -void vesacon_set_resolution(int x, int y) -{ - vesacon_resolution.x = x; - vesacon_resolution.y = y; -} - -/* Common setup */ -int __vesacon_open(struct file_info *fp) -{ - (void)fp; - - if (!vesacon_counter) { - /* Are we disabled? */ - if (syslinux_serial_console_info()->flowctl & 0x8000) { - ti.disabled = 1; - ti.rows = 25; - ti.cols = 80; - } else { - /* Switch mode */ - if (__vesacon_init(vesacon_resolution.x, vesacon_resolution.y)) { - vesacon_counter = -1; - return EAGAIN; - } - - /* Initial state */ - __ansi_init(&ti); - ti.rows = __vesacon_text_rows; - ti.cols = __vesacon_text_cols; - } - } else if (vesacon_counter == -1) { - return EAGAIN; - } - - fp->o.rows = ti.rows; - fp->o.cols = ti.cols; - - vesacon_counter++; - return 0; -} - -int __vesacon_close(struct file_info *fp) -{ - (void)fp; - - vesacon_counter--; - return 0; -} - -/* Erase a region of the screen */ -static void vesacon_erase(const struct term_state *st, - int x0, int y0, int x1, int y1) -{ - __vesacon_erase(x0, y0, x1, y1, st->cindex); -} - -/* Draw text on the screen */ -static void vesacon_write_char(int x, int y, uint8_t ch, - const struct term_state *st) -{ - __vesacon_write_char(x, y, ch, st->cindex); -} - -/* Show or hide the cursor */ -static bool cursor_enabled = true; -void vesacon_cursor_enable(bool enabled) -{ - cursor_enabled = enabled; -} -static void vesacon_showcursor(const struct term_state *st) -{ - vesacon_setcursor(st->xy.x, st->xy.y, st->cursor); -} -static void vesacon_setcursor(int x, int y, bool visible) -{ - __vesacon_set_cursor(x, y, visible && cursor_enabled); -} - -static void vesacon_scroll_up(const struct term_state *st) -{ - __vesacon_scroll_up(1, st->cindex); -} - -ssize_t __vesacon_write(struct file_info *fp, const void *buf, size_t count) -{ - const unsigned char *bufp = buf; - size_t n = 0; - - (void)fp; - - if (ti.disabled) - return count; /* Nothing to do */ - - /* This only updates the shadow text buffer... */ - while (count--) { - __ansi_putchar(&ti, *bufp++); - n++; - } - - /* This actually draws it */ - __vesacon_doit(); - - return n; -} - -const struct output_dev dev_vesacon_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __vesacon_write, - .close = __vesacon_close, - .open = __vesacon_open, - .fallback = &dev_ansicon_w, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesaserial_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesaserial_write.c deleted file mode 100644 index 775ca19..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/vesaserial_write.c +++ /dev/null @@ -1,61 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * vesaserial_write.c - * - * Write to both to the VESA console and the serial port - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <console.h> -#include "file.h" - -extern int __vesacon_open(struct file_info *); -extern int __vesacon_close(struct file_info *); -extern ssize_t __vesacon_write(struct file_info *, const void *, size_t); -extern ssize_t __xserial_write(struct file_info *, const void *, size_t); - -static ssize_t __vesaserial_write(struct file_info *fp, const void *buf, - size_t count) -{ - __vesacon_write(fp, buf, count); - return __xserial_write(fp, buf, count); -} - -const struct output_dev dev_vesaserial_w = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_TTY | __DEV_OUTPUT, - .fileflags = O_WRONLY | O_CREAT | O_TRUNC | O_APPEND, - .write = __vesaserial_write, - .close = __vesacon_close, - .open = __vesacon_open, - .fallback = &dev_ansiserial_w, -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/write.c deleted file mode 100644 index 7961fd2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/write.c +++ /dev/null @@ -1,51 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * write.c - * - * Write to a file descriptor - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <klibc/compiler.h> -#include "file.h" - -ssize_t write(int fd, void *buf, size_t count) -{ - struct file_info *fp = &__file_info[fd]; - - if (fd >= NFILES || !fp->oop) { - errno = EBADF; - return -1; - } - - return fp->oop->write(fp, buf, count); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/x86_init_fpu.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/x86_init_fpu.c deleted file mode 100644 index cf33693..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/x86_init_fpu.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - * x86_has_fpu.c - * - * Test for an x86 FPU, and do any necessary setup. - */ - -#include <inttypes.h> -#include <sys/fpu.h> - -static inline uint64_t get_cr0(void) -{ - uint32_t v; -asm("movl %%cr0,%0":"=r"(v)); - return v; -} - -static inline void set_cr0(uint32_t v) -{ - asm volatile ("movl %0,%%cr0"::"r" (v)); -} - -#define CR0_PE 0x00000001 -#define CR0_MP 0x00000002 -#define CR0_EM 0x00000004 -#define CR0_TS 0x00000008 -#define CR0_ET 0x00000010 -#define CR0_NE 0x00000020 -#define CR0_WP 0x00010000 -#define CR0_AM 0x00040000 -#define CR0_NW 0x20000000 -#define CR0_CD 0x40000000 -#define CR0_PG 0x80000000 - -int x86_init_fpu(void) -{ - uint32_t cr0; - uint16_t fsw = 0xffff; - uint16_t fcw = 0xffff; - - cr0 = get_cr0(); - cr0 &= ~(CR0_EM | CR0_TS); - cr0 |= CR0_MP; - set_cr0(cr0); - - asm volatile ("fninit"); - asm volatile ("fnstsw %0":"+m" (fsw)); - if (fsw != 0) - return -1; - - asm volatile ("fnstcw %0":"+m" (fcw)); - if ((fcw & 0x103f) != 0x3f) - return -1; - - /* Techically, this could be a 386 with a 287. We could add a check - for that here... */ - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/xserial_write.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/xserial_write.c deleted file mode 100644 index e399f5f..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/xserial_write.c +++ /dev/null @@ -1,118 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * xserial_write.c - * - * Raw writing to the serial port; \n -> \r\n translation, and - * convert \1# sequences. - */ - -#include <errno.h> -#include <string.h> -#include <com32.h> -#include <minmax.h> -#include <colortbl.h> -#include <syslinux/config.h> -#include "file.h" - -static void emit(char ch) -{ - static com32sys_t ireg; /* Zeroed with the BSS */ - - ireg.eax.b[1] = 0x04; - ireg.edx.b[0] = ch; - - __intcall(0x21, &ireg, NULL); -} - -ssize_t __xserial_write(struct file_info *fp, const void *buf, size_t count) -{ - const char *bufp = buf; - size_t n = 0; - static enum { st_init, st_tbl, st_tblc } state = st_init; - static int ndigits; - static int ncolor = 0; - int num; - const char *p; - - (void)fp; - - if (!syslinux_serial_console_info()->iobase) - return count; /* Nothing to do */ - - while (count--) { - unsigned char ch = *bufp++; - - switch (state) { - case st_init: - if (ch >= 1 && ch <= 5) { - state = st_tbl; - ndigits = ch; - } else if (ch == '\n') { - emit('\r'); - emit('\n'); - } else { - emit(ch); - } - break; - - case st_tbl: - if (ch == '#') { - state = st_tblc; - ncolor = 0; - } else { - state = st_init; - } - break; - - case st_tblc: - num = ch - '0'; - if (num < 10) { - ncolor = (ncolor * 10) + num; - if (--ndigits == 0) { - if (ncolor < console_color_table_size) { - emit('\033'); - emit('['); - emit('0'); - emit(';'); - for (p = console_color_table[ncolor].ansi; *p; p++) - emit(*p); - emit('m'); - } - state = st_init; - } - } else { - state = st_init; - } - break; - } - n++; - } - - return n; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zeroregs.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/zeroregs.c deleted file mode 100644 index 6d52492..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zeroregs.c +++ /dev/null @@ -1,5 +0,0 @@ -#include <com32.h> - -/* When we don't need to pass any registers, it's convenient to just - be able to pass a prepared all-zero structure. */ -const com32sys_t __com32_zero_regs; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfile.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfile.c deleted file mode 100644 index 0e6ba91..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfile.c +++ /dev/null @@ -1,171 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2003-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <errno.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include <stdlib.h> -#include <syslinux/zio.h> - -#include "file.h" -#include "zlib.h" - -/* - * zopen.c - * - * Open an ordinary file, possibly compressed; if so, insert - * an appropriate decompressor. - */ - -int __file_get_block(struct file_info *fp); -int __file_close(struct file_info *fp); - -static ssize_t gzip_file_read(struct file_info *, void *, size_t); -static int gzip_file_close(struct file_info *); - -static const struct input_dev gzip_file_dev = { - .dev_magic = __DEV_MAGIC, - .flags = __DEV_FILE | __DEV_INPUT, - .fileflags = O_RDONLY, - .read = gzip_file_read, - .close = gzip_file_close, - .open = NULL, -}; - -static int gzip_file_init(struct file_info *fp) -{ - z_streamp zs = calloc(1, sizeof(z_stream)); - - if (!zs) - return -1; - - fp->i.pvt = zs; - - zs->next_in = (void *)fp->i.datap; - zs->avail_in = fp->i.nbytes; - - if (inflateInit2(zs, 15 + 32) != Z_OK) { - errno = EIO; - return -1; - } - - fp->iop = &gzip_file_dev; - fp->i.fd.size = -1; /* Unknown */ - - return 0; -} - -static ssize_t gzip_file_read(struct file_info *fp, void *ptr, size_t n) -{ - z_streamp zs = fp->i.pvt; - int rv; - ssize_t bytes; - ssize_t nout = 0; - unsigned char *p = ptr; - - while (n) { - zs->next_out = p; - zs->avail_out = n; - - if (!zs->avail_in && fp->i.fd.handle) { - if (__file_get_block(fp)) - return nout ? nout : -1; - - zs->next_in = (void *)fp->i.datap; - zs->avail_in = fp->i.nbytes; - } - - rv = inflate(zs, Z_SYNC_FLUSH); - - bytes = n - zs->avail_out; - nout += bytes; - p += bytes; - n -= bytes; - - switch (rv) { - case Z_DATA_ERROR: - case Z_NEED_DICT: - case Z_BUF_ERROR: - case Z_STREAM_ERROR: - default: - errno = EIO; - return nout ? nout : -1; - case Z_MEM_ERROR: - errno = ENOMEM; - return nout ? nout : -1; - case Z_STREAM_END: - return nout; - case Z_OK: - break; - } - } - - return nout; -} - -static int gzip_file_close(struct file_info *fp) -{ - z_streamp zs = fp->i.pvt; - - inflateEnd(zs); - free(zs); - return __file_close(fp); -} - -int zopen(const char *pathname, int flags, ...) -{ - int fd, rv; - struct file_info *fp; - - /* We don't actually give a hoot about the creation bits... */ - fd = open(pathname, flags, 0); - - if (fd < 0) - return -1; - - fp = &__file_info[fd]; - - /* Need to get the first block into the buffer, but not consumed */ - if (__file_get_block(fp)) - goto err; - - if (fp->i.nbytes >= 14 && - (uint8_t) fp->i.buf[0] == 037 && - (uint8_t) fp->i.buf[1] == 0213 && /* gzip */ - fp->i.buf[2] == 8) /* deflate */ - rv = gzip_file_init(fp); - else - rv = 0; /* Plain file */ - - if (!rv) - return fd; - -err: - close(fd); - return -1; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfopen.c b/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfopen.c deleted file mode 100644 index 752aaf4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/sys/zfopen.c +++ /dev/null @@ -1,44 +0,0 @@ -/* - * zfopen.c - */ - -#include <stdio.h> -#include <unistd.h> -#include <fcntl.h> -#include <syslinux/zio.h> - -FILE *zfopen(const char *file, const char *mode) -{ - int flags = O_RDONLY; - int plus = 0; - int fd; - - while (*mode) { - switch (*mode) { - case 'r': - flags = O_RDONLY; - break; - case 'w': - flags = O_WRONLY | O_CREAT | O_TRUNC; - break; - case 'a': - flags = O_WRONLY | O_CREAT | O_APPEND; - break; - case '+': - plus = 1; - break; - } - mode++; - } - - if (plus) { - flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR; - } - - fd = zopen(file, flags, 0666); - - if (fd < 0) - return NULL; - else - return fdopen(fd, mode); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/addlist.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/addlist.c deleted file mode 100644 index 265cf4a..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/addlist.c +++ /dev/null @@ -1,45 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <stdlib.h> -#include <syslinux/movebits.h> - -int syslinux_add_movelist(struct syslinux_movelist **list, - addr_t dst, addr_t src, addr_t len) -{ - struct syslinux_movelist *ml = malloc(sizeof(struct syslinux_movelist)); - if (!ml) - return -1; - - ml->dst = dst; - ml->src = src; - ml->len = len; - ml->next = *list; - - *list = ml; - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/adv.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/adv.c deleted file mode 100644 index be38e89..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/adv.c +++ /dev/null @@ -1,49 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/adv.c - * - * Access the syslinux auxilliary data vector - */ - -#include <syslinux/adv.h> -#include <klibc/compiler.h> -#include <com32.h> - -void *__syslinux_adv_ptr; -size_t __syslinux_adv_size; - -void __constructor __syslinux_get_adv(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x001c; - __intcall(0x22, ®, ®); - __syslinux_adv_ptr = MK_PTR(reg.es, reg.ebx.w[0]); - __syslinux_adv_size = reg.ecx.w[0]; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/advwrite.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/advwrite.c deleted file mode 100644 index 4152eea..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/advwrite.c +++ /dev/null @@ -1,45 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/advwrite.c - * - * Write back the ADV - */ - -#include <syslinux/adv.h> -#include <klibc/compiler.h> -#include <com32.h> - -int syslinux_adv_write(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x001d; - __intcall(0x22, ®, ®); - return (reg.eflags.l & EFLAGS_CF) ? -1 : 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/cleanup.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/cleanup.c deleted file mode 100644 index 12140e5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/cleanup.c +++ /dev/null @@ -1,40 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/boot.h> -#include <stddef.h> -#include <com32.h> - -void syslinux_final_cleanup(uint16_t flags) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x000c; - ireg.edx.w[0] = flags; - - __intcall(0x22, &ireg, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/config.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/config.c deleted file mode 100644 index b27aa82..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/config.c +++ /dev/null @@ -1,41 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/config.h> -#include <klibc/compiler.h> -#include <com32.h> - -const char *__syslinux_config_file; - -void __constructor __syslinux_get_config_file_name(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x000e; - __intcall(0x22, ®, ®); - __syslinux_config_file = MK_PTR(reg.es, reg.ebx.w[0]); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dsinfo.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dsinfo.c deleted file mode 100644 index c1f02a5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dsinfo.c +++ /dev/null @@ -1,45 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/config.h> -#include <klibc/compiler.h> -#include <com32.h> - -union syslinux_derivative_info __syslinux_derivative_info; - -void __constructor __syslinux_get_derivative_info(void) -{ - com32sys_t *const r = &__syslinux_derivative_info.rr.r; - - r->eax.w[0] = 0x000A; - __intcall(0x22, r, r); - - __syslinux_derivative_info.r.esbx = MK_PTR(r->es, r->ebx.w[0]); - __syslinux_derivative_info.r.fssi = MK_PTR(r->fs, r->esi.w[0]); - __syslinux_derivative_info.r.gsdi = MK_PTR(r->gs, r->edi.w[0]); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_mmap.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_mmap.c deleted file mode 100644 index 3f1e340..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_mmap.c +++ /dev/null @@ -1,47 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * dump_mmap.c - * - * Writes a syslinux_memmap out to a specified file. This is - * intended for debugging. - */ - -#include <stdio.h> -#include <syslinux/movebits.h> - -void syslinux_dump_memmap(FILE * file, struct syslinux_memmap *memmap) -{ - fprintf(file, "%10s %10s %10s\n" - "--------------------------------\n", "Start", "Length", "Type"); - while (memmap->next) { - fprintf(file, "0x%08x 0x%08x %10d\n", memmap->start, - memmap->next->start - memmap->start, memmap->type); - memmap = memmap->next; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_movelist.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_movelist.c deleted file mode 100644 index 282d006..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/dump_movelist.c +++ /dev/null @@ -1,46 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * dump_movelist.c - * - * Writes a syslinux_movelist out to a specified file. This is - * intended for debugging. - */ - -#include <stdio.h> -#include <syslinux/movebits.h> - -void syslinux_dump_movelist(FILE * file, struct syslinux_movelist *ml) -{ - fprintf(file, "%10s %10s %10s\n" - "--------------------------------\n", "Dest", "Src", "Length"); - while (ml) { - fprintf(file, "0x%08x 0x%08x 0x%08x\n", ml->dst, ml->src, ml->len); - ml = ml->next; - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/features.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/features.c deleted file mode 100644 index c88aef3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/features.c +++ /dev/null @@ -1,51 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/features.c - * - * SYSLINUX feature flag query - */ - -#include <klibc/compiler.h> -#include <syslinux/features.h> -#include <string.h> -#include <com32.h> - -struct __syslinux_feature_flags __syslinux_feature_flags; - -void __constructor __syslinux_detect_features(void) -{ - static com32sys_t reg; - - memset(®, 0, sizeof reg); - reg.eax.w[0] = 0x0015; - __intcall(0x22, ®, ®); - - __syslinux_feature_flags.len = reg.ecx.w[0]; - __syslinux_feature_flags.ptr = MK_PTR(reg.es, reg.ebx.w[0]); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/floadfile.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/floadfile.c deleted file mode 100644 index ece460d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/floadfile.c +++ /dev/null @@ -1,108 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2005-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * floadfile.c - * - * Read the contents of a data file into a malloc'd buffer - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <sys/stat.h> - -#include <syslinux/loadfile.h> - -#define INCREMENTAL_CHUNK 1024*1024 - -int floadfile(FILE * f, void **ptr, size_t * len, const void *prefix, - size_t prefix_len) -{ - struct stat st; - void *data, *dp; - size_t alen, clen, rlen, xlen; - - clen = alen = 0; - data = NULL; - - if (fstat(fileno(f), &st)) - goto err; - - if (!S_ISREG(st.st_mode)) { - /* Not a regular file, we can't assume we know the file size */ - if (prefix_len) { - clen = alen = prefix_len; - data = malloc(prefix_len); - if (!data) - goto err; - - memcpy(data, prefix, prefix_len); - } - - do { - alen += INCREMENTAL_CHUNK; - dp = realloc(data, alen); - if (!dp) - goto err; - data = dp; - - rlen = fread((char *)data + clen, 1, alen - clen, f); - clen += rlen; - } while (clen == alen); - - *len = clen; - xlen = (clen + LOADFILE_ZERO_PAD - 1) & ~(LOADFILE_ZERO_PAD - 1); - dp = realloc(data, xlen); - if (dp) - data = dp; - *ptr = data; - } else { - *len = clen = st.st_size + prefix_len - ftell(f); - xlen = (clen + LOADFILE_ZERO_PAD - 1) & ~(LOADFILE_ZERO_PAD - 1); - - *ptr = data = malloc(xlen); - if (!data) - return -1; - - memcpy(data, prefix, prefix_len); - - if ((off_t) fread((char *)data + prefix_len, 1, clen - prefix_len, f) - != clen - prefix_len) - goto err; - } - - memset((char *)data + clen, 0, xlen - clen); - return 0; - -err: - if (data) - free(data); - return -1; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/freelist.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/freelist.c deleted file mode 100644 index f73a69c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/freelist.c +++ /dev/null @@ -1,46 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * freelist.c - * - * Frees a syslinux_movelist - */ - -#include <stdlib.h> -#include <syslinux/movebits.h> - -void syslinux_free_movelist(struct syslinux_movelist *list) -{ - struct syslinux_movelist *m; - - while (list) { - m = list; - list = list->next; - free(m); - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/getadv.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/getadv.c deleted file mode 100644 index 5578313..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/getadv.c +++ /dev/null @@ -1,68 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/getadv.c - * - * Get a data item from the auxilliary data vector. Returns a pointer - * and sets *size on success; NULL on failure. - */ - -#include <syslinux/adv.h> -#include <klibc/compiler.h> -#include <inttypes.h> - -const void *syslinux_getadv(int tag, size_t * size) -{ - const uint8_t *p; - size_t left; - - p = syslinux_adv_ptr(); - left = syslinux_adv_size(); - - while (left >= 2) { - uint8_t ptag = *p++; - size_t plen = *p++; - left -= 2; - - if (ptag == ADV_END) - return NULL; /* Not found */ - - if (left < plen) - return NULL; /* Item overrun */ - - if (ptag == tag) { - *size = plen; - return p; - } - - p += plen; - left -= plen; - } - - return NULL; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/idle.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/idle.c deleted file mode 100644 index ddaa7fc..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/idle.c +++ /dev/null @@ -1,47 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2005-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * idle.c - * - * What to do in a busy loop... - */ - -#include <stddef.h> -#include <com32.h> -#include <syslinux/pmapi.h> -#include <syslinux/idle.h> - -void syslinux_reset_idle(void) -{ - __com32.cs_pm->reset_idle(); -} - -void syslinux_idle(void) -{ - __com32.cs_pm->idle(); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs.c deleted file mode 100644 index 220e162..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs.c +++ /dev/null @@ -1,76 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initramfs.c - * - * Utility functions for initramfs manipulation - */ - -#include <stdlib.h> -#include <syslinux/linux.h> - -struct initramfs *initramfs_init(void) -{ - struct initramfs *ir; - - ir = calloc(sizeof(*ir), 1); - if (!ir) - return NULL; - - ir->prev = ir->next = ir; - return ir; -} - -int initramfs_add_data(struct initramfs *ihead, const void *data, - size_t data_len, size_t len, size_t align) -{ - struct initramfs *in; - - if (!len) - return 0; /* Nothing to add... */ - - /* Alignment must be a power of 2, and <= INITRAMFS_MAX_ALIGN */ - if (!align || (align & (align - 1)) || align > INITRAMFS_MAX_ALIGN) - return -1; - - in = malloc(sizeof(*in)); - if (!in) - return -1; - - in->len = len; - in->data = data; - in->data_len = data_len; - in->align = align; - - in->next = ihead; - in->prev = ihead->prev; - ihead->prev->next = in; - ihead->prev = in; - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_archive.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_archive.c deleted file mode 100644 index 495b78e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_archive.c +++ /dev/null @@ -1,47 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initramfs_archive.c - * - * Utility function to load an initramfs archive. - */ - -#include <stdlib.h> -#include <syslinux/loadfile.h> -#include <syslinux/linux.h> - -int initramfs_load_archive(struct initramfs *ihead, const char *filename) -{ - void *data; - size_t len; - - if (loadfile(filename, &data, &len)) - return -1; - - return initramfs_add_data(ihead, data, len, len, 4); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c deleted file mode 100644 index 763eff2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_file.c +++ /dev/null @@ -1,161 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initramfs_file.c - * - * Utility functions to add arbitrary files including cpio header - */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <sys/stat.h> -#include <syslinux/linux.h> - -#define CPIO_MAGIC "070701" -struct cpio_header { - char c_magic[6]; /* 070701 */ - char c_ino[8]; /* Inode number */ - char c_mode[8]; /* File mode and permissions */ - char c_uid[8]; /* uid */ - char c_gid[8]; /* gid */ - char c_nlink[8]; /* Number of links */ - char c_mtime[8]; /* Modification time */ - char c_filesize[8]; /* Size of data field */ - char c_maj[8]; /* File device major number */ - char c_min[8]; /* File device minor number */ - char c_rmaj[8]; /* Device node reference major number */ - char c_rmin[8]; /* Device node reference minor number */ - char c_namesize[8]; /* Length of filename including final \0 */ - char c_chksum[8]; /* Checksum if c_magic ends in 2 */ -}; - -static uint32_t next_ino = 1; - -/* Create cpio headers for the directory entries leading up to a file. - Returns the number of bytes; doesn't touch the buffer if too small. */ -static size_t initramfs_mkdirs(const char *filename, void *buffer, - size_t buflen) -{ - const char *p = filename; - char *bp = buffer; - int len; - size_t bytes = 0; - int pad; - - while ((p = strchr(p, '/'))) { - if (p != filename && p[-1] != '/') { - len = p - filename; - bytes += ((sizeof(struct cpio_header) + len + 1) + 3) & ~3; - } - p++; - } - - if (buflen >= bytes) { - p = filename; - while ((p = strchr(p, '/'))) { - if (p != filename && p[-1] != '/') { - len = p - filename; - bp += sprintf(bp, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x" - "%08x%08x%08x%08x", next_ino++, S_IFDIR | 0755, - 0, 0, 1, 0, 0, 0, 1, 0, 1, len + 1, 0); - memcpy(bp, filename, len); - bp += len; - pad = (-(sizeof(struct cpio_header) + len) & 3) + 1; - memset(bp, 0, pad); - bp += pad; - } - } - } - - return bytes; -} - -/* - * Create a file header (with optional parent directory entries) - * and add it to an initramfs chain - */ -int initramfs_mknod(struct initramfs *ihead, const char *filename, - int do_mkdir, - uint16_t mode, size_t len, uint32_t major, uint32_t minor) -{ - size_t bytes; - int namelen = strlen(filename); - int pad; - char *buffer, *bp; - - if (do_mkdir) - bytes = initramfs_mkdirs(filename, NULL, 0); - else - bytes = 0; - - bytes += ((sizeof(struct cpio_header) + namelen + 1) + 3) & ~3; - - bp = buffer = malloc(bytes); - if (!buffer) - return -1; - - if (do_mkdir) - bp += initramfs_mkdirs(filename, bp, bytes); - - bp += sprintf(bp, "070701%08x%08x%08x%08x%08x%08x%08x%08x%08x" - "%08x%08x%08x%08x", next_ino++, mode, - 0, 0, 1, 0, len, 0, 1, major, minor, namelen + 1, 0); - memcpy(bp, filename, namelen); - bp += len; - pad = (-(sizeof(struct cpio_header) + namelen) & 3) + 1; - memset(bp, 0, pad); - - if (initramfs_add_data(ihead, buffer, bytes, bytes, 4)) { - free(buffer); - return -1; - } - - return 0; -} - -/* - * Add a file given data in memory to an initramfs chain. This - * can be used to create nonfiles like symlinks by specifying an - * appropriate mode. - */ -int initramfs_add_file(struct initramfs *ihead, const void *data, - size_t data_len, size_t len, - const char *filename, int do_mkdir, uint32_t mode) -{ - if (initramfs_mknod(ihead, filename, do_mkdir, - (mode & S_IFMT) ? mode : mode | S_IFREG, len, 0, 1)) - return -1; - - return initramfs_add_data(ihead, data, data_len, len, 4); -} - -int initramfs_add_trailer(struct initramfs *ihead) -{ - return initramfs_mknod(ihead, "TRAILER!!!", 0, 0, 0, 0, 0); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_loadfile.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_loadfile.c deleted file mode 100644 index 1338aad..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/initramfs_loadfile.c +++ /dev/null @@ -1,48 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * initramfs_loadfile.c - * - * Load a single file into an initramfs image. - */ - -#include <syslinux/linux.h> -#include <syslinux/loadfile.h> - -int initramfs_load_file(struct initramfs *ihead, const char *src_filename, - const char *dst_filename, int do_mkdir, uint32_t mode) -{ - void *data; - size_t len; - - if (loadfile(src_filename, &data, &len)) - return -1; - - return initramfs_add_file(ihead, data, len, len, dst_filename, - do_mkdir, mode); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/ipappend.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/ipappend.c deleted file mode 100644 index bd00092..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/ipappend.c +++ /dev/null @@ -1,58 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/ipappend.c - * - * Get ipappend strings - */ - -#include <syslinux/config.h> -#include <klibc/compiler.h> -#include <com32.h> - -struct syslinux_ipappend_strings __syslinux_ipappend_strings; -static const char *syslinux_ipappend_string_list[32]; - -void __constructor __syslinux_get_ipappend_strings(void) -{ - static com32sys_t reg; - int i; - - reg.eax.w[0] = 0x000f; - __intcall(0x22, ®, ®); - - if (!(reg.eflags.l & EFLAGS_CF)) { - __syslinux_ipappend_strings.count = reg.ecx.w[0]; - __syslinux_ipappend_strings.ptr = syslinux_ipappend_string_list; - for (i = 0; i < reg.ecx.w[0]; i++) { - syslinux_ipappend_string_list[i] = - MK_PTR(reg.es, - *(uint16_t *) MK_PTR(reg.es, reg.ebx.w[0] + i * 2)); - } - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/keyboard.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/keyboard.c deleted file mode 100644 index feafde0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/keyboard.c +++ /dev/null @@ -1,44 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/keyboard.h> -#include <com32.h> - -struct syslinux_keyboard_map __syslinux_keyboard_map; - -void __constructor __syslinux_get_keyboard_map(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x001e; - __intcall(0x22, ®, ®); - if (!(reg.eflags.l & EFLAGS_CF)) { - __syslinux_keyboard_map.version = reg.eax.w[0]; - __syslinux_keyboard_map.length = reg.ecx.w[0]; - __syslinux_keyboard_map.map = MK_PTR(reg.es, reg.ebx.w[0]); - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/load_linux.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/load_linux.c deleted file mode 100644 index df79362..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/load_linux.c +++ /dev/null @@ -1,511 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * load_linux.c - * - * Load a Linux kernel (Image/zImage/bzImage). - */ - -#include <ctype.h> -#include <stdbool.h> -#include <stdlib.h> -#include <inttypes.h> -#include <string.h> -#include <minmax.h> -#include <syslinux/align.h> -#include <syslinux/linux.h> -#include <syslinux/bootrm.h> -#include <syslinux/movebits.h> - -#ifndef DEBUG -# define DEBUG 0 -#endif -#if DEBUG -# include <stdio.h> -# define dprintf printf -#else -# define dprintf(f, ...) ((void)0) -#endif - -struct linux_header { - uint8_t boot_sector_1[0x0020]; - uint16_t old_cmd_line_magic; - uint16_t old_cmd_line_offset; - uint8_t boot_sector_2[0x01f1 - 0x0024]; - uint8_t setup_sects; - uint16_t root_flags; - uint32_t syssize; - uint16_t ram_size; - uint16_t vid_mode; - uint16_t root_dev; - uint16_t boot_flag; - uint16_t jump; - uint32_t header; - uint16_t version; - uint32_t realmode_swtch; - uint16_t start_sys; - uint16_t kernel_version; - uint8_t type_of_loader; - uint8_t loadflags; - uint16_t setup_move_size; - uint32_t code32_start; - uint32_t ramdisk_image; - uint32_t ramdisk_size; - uint32_t bootsect_kludge; - uint16_t heap_end_ptr; - uint16_t pad1; - uint32_t cmd_line_ptr; - uint32_t initrd_addr_max; - uint32_t kernel_alignment; - uint8_t relocatable_kernel; - uint8_t pad2[3]; - uint32_t cmdline_max_len; -} __packed; - -#define BOOT_MAGIC 0xAA55 -#define LINUX_MAGIC ('H' + ('d' << 8) + ('r' << 16) + ('S' << 24)) -#define OLD_CMDLINE_MAGIC 0xA33F - -/* loadflags */ -#define LOAD_HIGH 0x01 -#define CAN_USE_HEAP 0x80 - -/* Get a value with a potential suffix (k/m/g/t/p/e) */ -static unsigned long long suffix_number(const char *str) -{ - char *ep; - unsigned long long v; - int shift; - - v = strtoull(str, &ep, 0); - switch (*ep | 0x20) { - case 'k': - shift = 10; - break; - case 'm': - shift = 20; - break; - case 'g': - shift = 30; - break; - case 't': - shift = 40; - break; - case 'p': - shift = 50; - break; - case 'e': - shift = 60; - break; - default: - shift = 0; - break; - } - v <<= shift; - - return v; -} - -/* - * Find the last instance of a particular command line argument - * (which should include the final =; do not use for boolean arguments) - * Note: the resulting string is typically not null-terminated. - */ -static const char *find_argument(const char *cmdline, const char *argument) -{ - const char *found = NULL; - const char *p = cmdline; - bool was_space = true; - size_t la = strlen(argument); - - while (*p) { - if (isspace(*p)) { - was_space = true; - } else if (was_space) { - if (!memcmp(p, argument, la)) - found = p + la; - was_space = false; - } - p++; - } - - return found; -} - -/* Truncate to 32 bits, with saturate */ -static inline uint32_t saturate32(unsigned long long v) -{ - return (v > 0xffffffff) ? 0xffffffff : (uint32_t) v; -} - -/* Get the combined size of the initramfs */ -static addr_t initramfs_size(struct initramfs *initramfs) -{ - struct initramfs *ip; - addr_t size = 0; - - if (!initramfs) - return 0; - - for (ip = initramfs->next; ip->len; ip = ip->next) { - size = (size + ip->align - 1) & ~(ip->align - 1); /* Alignment */ - size += ip->len; - } - - return size; -} - -/* Create the appropriate mappings for the initramfs */ -static int map_initramfs(struct syslinux_movelist **fraglist, - struct syslinux_memmap **mmap, - struct initramfs *initramfs, addr_t addr) -{ - struct initramfs *ip; - addr_t next_addr, len, pad; - - for (ip = initramfs->next; ip->len; ip = ip->next) { - len = ip->len; - next_addr = addr + len; - - /* If this isn't the last entry, extend the zero-pad region - to enforce the alignment of the next chunk. */ - if (ip->next->len) { - pad = -next_addr & (ip->next->align - 1); - len += pad; - next_addr += pad; - } - - if (ip->data_len) { - if (syslinux_add_movelist(fraglist, addr, (addr_t) ip->data, len)) - return -1; - } - if (len > ip->data_len) { - if (syslinux_add_memmap(mmap, addr + ip->data_len, - len - ip->data_len, SMT_ZERO)) - return -1; - } - addr = next_addr; - } - - return 0; -} - -int syslinux_boot_linux(void *kernel_buf, size_t kernel_size, - struct initramfs *initramfs, char *cmdline) -{ - struct linux_header hdr, *whdr; - size_t real_mode_size, prot_mode_size; - addr_t real_mode_base, prot_mode_base; - addr_t irf_size; - size_t cmdline_size, cmdline_offset; - struct syslinux_rm_regs regs; - struct syslinux_movelist *fraglist = NULL; - struct syslinux_memmap *mmap = NULL; - struct syslinux_memmap *amap = NULL; - bool ok; - uint32_t memlimit = 0; - uint16_t video_mode = 0; - const char *arg; - - cmdline_size = strlen(cmdline) + 1; - - if (kernel_size < 2 * 512) - goto bail; - - /* Look for specific command-line arguments we care about */ - if ((arg = find_argument(cmdline, "mem="))) - memlimit = saturate32(suffix_number(arg)); - - if ((arg = find_argument(cmdline, "vga="))) { - switch (arg[0] | 0x20) { - case 'a': /* "ask" */ - video_mode = 0xfffd; - break; - case 'e': /* "ext" */ - video_mode = 0xfffe; - break; - case 'n': /* "normal" */ - video_mode = 0xffff; - break; - case 'c': /* "current" */ - video_mode = 0x0f04; - break; - default: - video_mode = strtoul(arg, NULL, 0); - break; - } - } - - /* Copy the header into private storage */ - /* Use whdr to modify the actual kernel header */ - memcpy(&hdr, kernel_buf, sizeof hdr); - whdr = (struct linux_header *)kernel_buf; - - if (hdr.boot_flag != BOOT_MAGIC) - goto bail; - - if (hdr.header != LINUX_MAGIC) { - hdr.version = 0x0100; /* Very old kernel */ - hdr.loadflags = 0; - } - - whdr->vid_mode = video_mode; - - if (!hdr.setup_sects) - hdr.setup_sects = 4; - - if (hdr.version < 0x0203) - hdr.initrd_addr_max = 0x37ffffff; - - if (!memlimit && memlimit - 1 > hdr.initrd_addr_max) - memlimit = hdr.initrd_addr_max + 1; /* Zero for no limit */ - - if (hdr.version < 0x0205 || !(hdr.loadflags & LOAD_HIGH)) - hdr.relocatable_kernel = 0; - - if (hdr.version < 0x0206) - hdr.cmdline_max_len = 256; - - if (cmdline_size > hdr.cmdline_max_len) { - cmdline_size = hdr.cmdline_max_len; - cmdline[cmdline_size - 1] = '\0'; - } - - if (hdr.version < 0x0202 || !(hdr.loadflags & 0x01)) - cmdline_offset = (0x9ff0 - cmdline_size) & ~15; - else - cmdline_offset = 0x10000; - - real_mode_size = (hdr.setup_sects + 1) << 9; - real_mode_base = (hdr.loadflags & LOAD_HIGH) ? 0x10000 : 0x90000; - prot_mode_base = (hdr.loadflags & LOAD_HIGH) ? 0x100000 : 0x10000; - prot_mode_size = kernel_size - real_mode_size; - - if (!(hdr.loadflags & LOAD_HIGH) && prot_mode_size > 512 * 1024) - goto bail; /* Kernel cannot be loaded low */ - - if (initramfs && hdr.version < 0x0200) - goto bail; /* initrd/initramfs not supported */ - - if (hdr.version >= 0x0200) { - whdr->type_of_loader = 0x30; /* SYSLINUX unknown module */ - if (hdr.version >= 0x0201) { - whdr->heap_end_ptr = cmdline_offset - 0x0200; - whdr->loadflags |= CAN_USE_HEAP; - } - if (hdr.version >= 0x0202) { - whdr->cmd_line_ptr = real_mode_base + cmdline_offset; - } else { - whdr->old_cmd_line_magic = OLD_CMDLINE_MAGIC; - whdr->old_cmd_line_offset = cmdline_offset; - /* Be paranoid and round up to a multiple of 16 */ - whdr->setup_move_size = (cmdline_offset + cmdline_size + 15) & ~15; - } - } - - /* Get the memory map */ - mmap = syslinux_memory_map(); /* Memory map for shuffle_boot */ - amap = syslinux_dup_memmap(mmap); /* Keep track of available memory */ - if (!mmap || !amap) - goto bail; - -#if DEBUG - dprintf("Initial memory map:\n"); - syslinux_dump_memmap(stdout, mmap); -#endif - - /* If the user has specified a memory limit, mark that as unavailable. - Question: should we mark this off-limit in the mmap as well (meaning - it's unavailable to the boot loader, which probably has already touched - some of it), or just in the amap? */ - if (memlimit) - if (syslinux_add_memmap(&amap, memlimit, -memlimit, SMT_RESERVED)) - goto bail; - - /* Place the kernel in memory */ - - /* First, find a suitable place for the protected-mode code */ - if (syslinux_memmap_type(amap, prot_mode_base, prot_mode_size) - != SMT_FREE) { - const struct syslinux_memmap *mp; - if (!hdr.relocatable_kernel) - goto bail; /* Can't relocate - no hope */ - - ok = false; - for (mp = amap; mp; mp = mp->next) { - addr_t start, end; - start = mp->start; - end = mp->next->start; - - if (mp->type != SMT_FREE) - continue; - - if (end <= prot_mode_base) - continue; /* Only relocate upwards */ - - if (start <= prot_mode_base) - start = prot_mode_base; - - start = ALIGN_UP(start, hdr.kernel_alignment); - if (start >= end) - continue; - - /* The 3* here is a total fudge factor... it's supposed to - account for the fact that the kernel needs to be decompressed, - and then followed by the BSS and BRK regions. This doesn't, - however, account for the fact that the kernel is decompressed - into a whole other place, either. */ - if (end - start >= 3 * prot_mode_size) { - whdr->code32_start += start - prot_mode_base; - prot_mode_base = start; - ok = true; - break; - } - } - - if (!ok) - goto bail; - } - - /* Real mode code */ - if (syslinux_memmap_type(amap, real_mode_base, - cmdline_offset + cmdline_size) != SMT_FREE) { - const struct syslinux_memmap *mp; - - ok = false; - for (mp = amap; mp; mp = mp->next) { - addr_t start, end; - start = mp->start; - end = mp->next->start; - - if (mp->type != SMT_FREE) - continue; - - if (start < real_mode_base) - start = real_mode_base; /* Lowest address we'll use */ - if (end > 640 * 1024) - end = 640 * 1024; - - start = ALIGN_UP(start, 16); - if (start > 0x90000 || start >= end) - continue; - - if (end - start >= cmdline_offset + cmdline_size) { - real_mode_base = start; - ok = true; - break; - } - } - } - - if (syslinux_add_movelist(&fraglist, real_mode_base, (addr_t) kernel_buf, - real_mode_size)) - goto bail; - if (syslinux_add_memmap - (&amap, real_mode_base, cmdline_offset + cmdline_size, SMT_ALLOC)) - goto bail; - - /* Zero region between real mode code and cmdline */ - if (syslinux_add_memmap(&mmap, real_mode_base + real_mode_size, - cmdline_offset - real_mode_size, SMT_ZERO)) - goto bail; - - /* Command line */ - if (syslinux_add_movelist(&fraglist, real_mode_base + cmdline_offset, - (addr_t) cmdline, cmdline_size)) - goto bail; - - /* Protected-mode code */ - if (syslinux_add_movelist(&fraglist, prot_mode_base, - (addr_t) kernel_buf + real_mode_size, - prot_mode_size)) - goto bail; - if (syslinux_add_memmap(&amap, prot_mode_base, prot_mode_size, SMT_ALLOC)) - goto bail; - - /* Figure out the size of the initramfs, and where to put it. - We should put it at the highest possible address which is - <= hdr.initrd_addr_max, which fits the entire initramfs. */ - - irf_size = initramfs_size(initramfs); /* Handles initramfs == NULL */ - - if (irf_size) { - addr_t best_addr = 0; - struct syslinux_memmap *ml; - const addr_t align_mask = INITRAMFS_MAX_ALIGN - 1; - - if (irf_size) { - for (ml = amap; ml->type != SMT_END; ml = ml->next) { - addr_t adj_start = (ml->start + align_mask) & ~align_mask; - addr_t adj_end = ml->next->start & ~align_mask; - if (ml->type == SMT_FREE && adj_end - adj_start >= irf_size) - best_addr = (adj_end - irf_size) & ~align_mask; - } - - if (!best_addr) - goto bail; /* Insufficient memory for initramfs */ - - whdr->ramdisk_image = best_addr; - whdr->ramdisk_size = irf_size; - - if (syslinux_add_memmap(&amap, best_addr, irf_size, SMT_ALLOC)) - goto bail; - - if (map_initramfs(&fraglist, &mmap, initramfs, best_addr)) - goto bail; - } - } - - /* Set up the registers on entry */ - memset(®s, 0, sizeof regs); - regs.es = regs.ds = regs.ss = regs.fs = regs.gs = real_mode_base >> 4; - regs.cs = (real_mode_base >> 4) + 0x20; - /* regs.ip = 0; */ - /* Linux is OK with sp = 0 = 64K, but perhaps other things aren't... */ - regs.esp.w[0] = min(cmdline_offset, (size_t) 0xfff0); - -#if DEBUG - dprintf("Final memory map:\n"); - syslinux_dump_memmap(stdout, mmap); - - dprintf("Final available map:\n"); - syslinux_dump_memmap(stdout, amap); - - dprintf("Initial movelist:\n"); - syslinux_dump_movelist(stdout, fraglist); -#endif - - syslinux_shuffle_boot_rm(fraglist, mmap, 0, ®s); - -bail: - syslinux_free_movelist(fraglist); - syslinux_free_memmap(mmap); - syslinux_free_memmap(amap); - return -1; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/loadfile.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/loadfile.c deleted file mode 100644 index fa96c65..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/loadfile.c +++ /dev/null @@ -1,63 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2005-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * loadfile.c - * - * Read the contents of a data file into a malloc'd buffer - */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <sys/stat.h> - -#include <syslinux/loadfile.h> - -#define INCREMENTAL_CHUNK 1024*1024 - -int loadfile(const char *filename, void **ptr, size_t * len) -{ - FILE *f; - int rv, e; - - f = fopen(filename, "r"); - if (!f) - return -1; - - rv = floadfile(f, ptr, len, NULL, 0); - e = errno; - - fclose(f); - - if (rv) - errno = e; - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/localboot.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/localboot.c deleted file mode 100644 index 3b480c7..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/localboot.c +++ /dev/null @@ -1,42 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/boot.h> -#include <stddef.h> -#include <com32.h> - -/* This returns only on failure */ - -void syslinux_local_boot(uint16_t flags) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0014; - ireg.edx.w[0] = flags; - - __intcall(0x22, &ireg, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memmap.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memmap.c deleted file mode 100644 index 12baa33..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memmap.c +++ /dev/null @@ -1,65 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * memmap.c - * - * Create initial memory map for "shuffle and boot" operation - */ - -#include <assert.h> -#include <stdbool.h> -#include <stdlib.h> -#include <inttypes.h> - -#include <syslinux/memscan.h> -#include <syslinux/movebits.h> - -static int syslinux_memory_map_callback(void *map, addr_t start, - addr_t len, bool valid) -{ - struct syslinux_memmap **mmap = map; - return syslinux_add_memmap(mmap, start, len, - valid ? SMT_FREE : SMT_RESERVED); -} - -struct syslinux_memmap *syslinux_memory_map(void) -{ - struct syslinux_memmap *mmap; - - mmap = syslinux_init_memmap(); - if (!mmap) - return NULL; - - if (syslinux_scan_memory(syslinux_memory_map_callback, &mmap)) { - syslinux_free_memmap(mmap); - return NULL; - } - - return mmap; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memscan.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memscan.c deleted file mode 100644 index fc676cb..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/memscan.c +++ /dev/null @@ -1,158 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * memscan.c - * - * Query the system for free memory - */ - -#include <assert.h> -#include <stdbool.h> -#include <stdlib.h> -#include <string.h> -#include <inttypes.h> -#include <com32.h> - -#include <syslinux/memscan.h> - -struct e820_entry { - uint64_t start; - uint64_t len; - uint32_t type; -}; - -int syslinux_scan_memory(scan_memory_callback_t callback, void *data) -{ - static com32sys_t ireg; - com32sys_t oreg; - struct e820_entry *e820buf; - uint64_t start, len, maxlen; - int memfound = 0; - int rv; - addr_t dosmem; - const addr_t bios_data = 0x510; /* Amount to reserve for BIOS data */ - - /* Use INT 12h to get DOS memory */ - __intcall(0x12, &__com32_zero_regs, &oreg); - dosmem = oreg.eax.w[0] << 10; - if (dosmem < 32 * 1024 || dosmem > 640 * 1024) { - /* INT 12h reports nonsense... now what? */ - uint16_t ebda_seg = *(uint16_t *) 0x40e; - if (ebda_seg >= 0x8000 && ebda_seg < 0xa000) - dosmem = ebda_seg << 4; - else - dosmem = 640 * 1024; /* Hope for the best... */ - } - rv = callback(data, bios_data, dosmem - bios_data, true); - if (rv) - return rv; - - /* First try INT 15h AX=E820h */ - e820buf = lzalloc(sizeof *e820buf); - if (!e820buf) - return -1; - - ireg.eax.l = 0xe820; - ireg.edx.l = 0x534d4150; - ireg.ebx.l = 0; - ireg.ecx.l = sizeof(*e820buf); - ireg.es = SEG(e820buf); - ireg.edi.w[0] = OFFS(e820buf); - - do { - __intcall(0x15, &ireg, &oreg); - - if ((oreg.eflags.l & EFLAGS_CF) || - (oreg.eax.l != 0x534d4150) || (oreg.ecx.l < 20)) - break; - - start = e820buf->start; - len = e820buf->len; - - if (start < 0x100000000ULL) { - /* Don't rely on E820 being valid for low memory. Doing so - could mean stuff like overwriting the PXE stack even when - using "keeppxe", etc. */ - if (start < 0x100000ULL) { - if (len > 0x100000ULL - start) - len -= 0x100000ULL - start; - else - len = 0; - start = 0x100000ULL; - } - - maxlen = 0x100000000ULL - start; - if (len > maxlen) - len = maxlen; - - if (len) { - rv = callback(data, (addr_t) start, (addr_t) len, - e820buf->type == 1); - if (rv) - return rv; - memfound = 1; - } - } - - ireg.ebx.l = oreg.ebx.l; - } while (oreg.ebx.l); - - lfree(e820buf); - - if (memfound) - return 0; - - /* Next try INT 15h AX=E801h */ - ireg.eax.w[0] = 0xe801; - __intcall(0x15, &ireg, &oreg); - - if (!(oreg.eflags.l & EFLAGS_CF) && oreg.ecx.w[0]) { - rv = callback(data, (addr_t) 1 << 20, oreg.ecx.w[0] << 10, true); - if (rv) - return rv; - - if (oreg.edx.w[0]) { - rv = callback(data, (addr_t) 16 << 20, oreg.edx.w[0] << 16, true); - if (rv) - return rv; - } - - return 0; - } - - /* Finally try INT 15h AH=88h */ - ireg.eax.w[0] = 0x8800; - if (!(oreg.eflags.l & EFLAGS_CF) && oreg.eax.w[0]) { - rv = callback(data, (addr_t) 1 << 20, oreg.ecx.w[0] << 10, true); - if (rv) - return rv; - } - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/movebits.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/movebits.c deleted file mode 100644 index bd5ce0e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/movebits.c +++ /dev/null @@ -1,710 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * movebits.c - * - * Utility function to take a list of memory areas to shuffle and - * convert it to a set of shuffle operations. - * - * Note: a lot of the functions in this file deal with "parent pointers", - * which are pointers to a pointer to a list, or part of the list. - * They can be pointers to a variable holding the list root pointer, - * or pointers to a next field of a previous entry. - */ - -#include <assert.h> -#include <stdio.h> -#include <errno.h> -#include <stdlib.h> -#include <inttypes.h> -#include <setjmp.h> -#include <minmax.h> -#include <stdbool.h> - -#include <syslinux/movebits.h> - -#ifndef DEBUG -# ifdef TEST -# define DEBUG 1 -# else -# define DEBUG 0 -# endif -#endif - -#if DEBUG -# include <stdio.h> -# define dprintf printf -#else -# define dprintf(...) ((void)0) -#endif - -static jmp_buf new_movelist_bail; - -static struct syslinux_movelist *new_movelist(addr_t dst, addr_t src, - addr_t len) -{ - struct syslinux_movelist *ml = malloc(sizeof(struct syslinux_movelist)); - - if (!ml) - longjmp(new_movelist_bail, 1); - - ml->dst = dst; - ml->src = src; - ml->len = len; - ml->next = NULL; - - return ml; -} - -static struct syslinux_movelist *dup_movelist(struct syslinux_movelist *src) -{ - struct syslinux_movelist *dst = NULL, **dstp = &dst, *ml; - - while (src) { - ml = new_movelist(src->dst, src->src, src->len); - *dstp = ml; - dstp = &ml->next; - src = src->next; - } - - return dst; -} - -static void -add_freelist(struct syslinux_memmap **mmap, addr_t start, - addr_t len, enum syslinux_memmap_types type) -{ - if (syslinux_add_memmap(mmap, start, len, type)) - longjmp(new_movelist_bail, 1); -} - -/* - * Take a chunk, entirely confined in **parentptr, and split it off so that - * it has its own structure. - */ -static struct syslinux_movelist **split_movelist(addr_t start, addr_t len, - struct syslinux_movelist - **parentptr) -{ - struct syslinux_movelist *m, *ml = *parentptr; - - assert(start >= ml->src); - assert(start < ml->src + ml->len); - - /* Split off the beginning */ - if (start > ml->src) { - addr_t l = start - ml->src; - - m = new_movelist(ml->dst + l, start, ml->len - l); - m->next = ml->next; - ml->len = l; - ml->next = m; - - parentptr = &ml->next; - ml = m; /* Continue processing the new node */ - } - - /* Split off the end */ - if (ml->len > len) { - addr_t l = ml->len - len; - - m = new_movelist(ml->dst + len, ml->src + len, l); - m->next = ml->next; - ml->len = len; - ml->next = m; - } - - return parentptr; -} - -static void delete_movelist(struct syslinux_movelist **parentptr) -{ - struct syslinux_movelist *o = *parentptr; - *parentptr = o->next; - free(o); -} - -static void free_movelist(struct syslinux_movelist **parentptr) -{ - while (*parentptr) - delete_movelist(parentptr); -} - -/* - * Scan the freelist looking for a particular chunk of memory - */ -static const struct syslinux_memmap *is_free_zone(const struct syslinux_memmap - *list, addr_t start, - addr_t len) -{ - dprintf("f: 0x%08x bytes at 0x%08x\n", len, start); - - addr_t last, llast; - - last = start + len - 1; - - while (list->type != SMT_END) { - llast = list->next->start - 1; - if (list->start <= start) { - if (llast >= last) { - /* Chunk has a single, well-defined type */ - if (list->type == SMT_FREE) { - dprintf("F: 0x%08x bytes at 0x%08x\n", - list->next->start, list->start); - return list; /* It's free */ - } - return NULL; /* Not free */ - } else if (llast >= start) { - return NULL; /* Crosses region boundary */ - } - } - list = list->next; - } - - return NULL; /* Internal error? */ -} - -/* - * Scan the freelist looking for the smallest chunk of memory which - * can fit X bytes; returns the length of the block on success. - */ -static addr_t free_area(const struct syslinux_memmap *mmap, - addr_t len, addr_t * start) -{ - const struct syslinux_memmap *best = NULL; - const struct syslinux_memmap *s; - addr_t slen, best_len = -1; - - for (s = mmap; s->type != SMT_END; s = s->next) { - if (s->type != SMT_FREE) - continue; - slen = s->next->start - s->start; - if (slen >= len) { - if (!best || best_len > slen) { - best = s; - best_len = slen; - } - } - } - - if (best) { - *start = best->start; - return best_len; - } else { - return 0; - } -} - -/* - * Remove a chunk from the freelist - */ -static void -allocate_from(struct syslinux_memmap **mmap, addr_t start, addr_t len) -{ - syslinux_add_memmap(mmap, start, len, SMT_ALLOC); -} - -/* - * Find chunks of a movelist which are one-to-many (one source, multiple - * destinations.) Those chunks can get turned into post-shuffle copies, - * to avoid confusing the shuffler. - */ -static void shuffle_dealias(struct syslinux_movelist **fraglist, - struct syslinux_movelist **postcopy) -{ - struct syslinux_movelist *mp, **mpp, *mx, *np; - addr_t ps, pe, xs, xe, delta; - bool advance; - -#if DEBUG - dprintf("Before alias resolution:\n"); - syslinux_dump_movelist(stdout, *fraglist); -#endif - - *postcopy = NULL; - - /* - * Note: as written, this is an O(n^2) algorithm; by producing a list - * sorted by destination address we could reduce it to O(n log n). - */ - mpp = fraglist; - while ((mp = *mpp)) { - dprintf("mp -> (%#x,%#x,%#x)\n", mp->dst, mp->src, mp->len); - ps = mp->src; - pe = mp->src + mp->len - 1; - for (mx = *fraglist; mx != mp; mx = mx->next) { - dprintf("mx -> (%#x,%#x,%#x)\n", mx->dst, mx->src, mx->len); - /* - * If there is any overlap between mx and mp, mp should be - * modified and possibly split. - */ - xs = mx->src; - xe = mx->src + mx->len - 1; - - dprintf("?: %#x..%#x (inside %#x..%#x)\n", ps, pe, xs, xe); - - if (pe <= xs || ps >= xe) - continue; /* No overlap */ - - advance = false; - *mpp = mp->next; /* Remove from list */ - - if (pe > xe) { - delta = pe - xe; - np = new_movelist(mp->dst + mp->len - delta, - mp->src + mp->len - delta, delta); - mp->len -= delta; - pe = xe; - np->next = *mpp; - *mpp = np; - advance = true; - } - if (ps < xs) { - delta = xs - ps; - np = new_movelist(mp->dst, ps, delta); - mp->src += delta; - ps = mp->src; - mp->dst += delta; - mp->len -= delta; - np->next = *mpp; - *mpp = np; - advance = true; - } - - assert(ps >= xs && pe <= xe); - - dprintf("Overlap: %#x..%#x (inside %#x..%#x)\n", ps, pe, xs, xe); - - mp->src = mx->dst + (ps - xs); - mp->next = *postcopy; - *postcopy = mp; - - mp = *mpp; - - if (!advance) - goto restart; - } - - mpp = &mp->next; -restart: - ; - } - -#if DEBUG - dprintf("After alias resolution:\n"); - syslinux_dump_movelist(stdout, *fraglist); - dprintf("Post-shuffle copies:\n"); - syslinux_dump_movelist(stdout, *postcopy); -#endif -} - -/* - * The code to actually emit moving of a chunk into its final place. - */ -static void -move_chunk(struct syslinux_movelist ***moves, - struct syslinux_memmap **mmap, - struct syslinux_movelist **fp, addr_t copylen) -{ - addr_t copydst, copysrc; - addr_t freebase, freelen; - addr_t needlen; - int reverse; - struct syslinux_movelist *f = *fp, *mv; - - if (f->src < f->dst && (f->dst - f->src) < f->len) { - /* "Shift up" type overlap */ - needlen = f->dst - f->src; - reverse = 1; - } else if (f->src > f->dst && (f->src - f->dst) < f->len) { - /* "Shift down" type overlap */ - needlen = f->src - f->dst; - reverse = 0; - } else { - needlen = f->len; - reverse = 0; - } - - copydst = f->dst; - copysrc = f->src; - - dprintf("Q: copylen = 0x%08x, needlen = 0x%08x\n", copylen, needlen); - - if (copylen < needlen) { - if (reverse) { - copydst += (f->len - copylen); - copysrc += (f->len - copylen); - } - - dprintf("X: 0x%08x bytes at 0x%08x -> 0x%08x\n", - copylen, copysrc, copydst); - - /* Didn't get all we wanted, so we have to split the chunk */ - fp = split_movelist(copysrc, copylen, fp); /* Is this right? */ - f = *fp; - } - - mv = new_movelist(f->dst, f->src, f->len); - dprintf("A: 0x%08x bytes at 0x%08x -> 0x%08x\n", mv->len, mv->src, mv->dst); - **moves = mv; - *moves = &mv->next; - - /* Figure out what memory we just freed up */ - if (f->dst > f->src) { - freebase = f->src; - freelen = min(f->len, f->dst - f->src); - } else if (f->src >= f->dst + f->len) { - freebase = f->src; - freelen = f->len; - } else { - freelen = f->src - f->dst; - freebase = f->dst + f->len; - } - - dprintf("F: 0x%08x bytes at 0x%08x\n", freelen, freebase); - - add_freelist(mmap, freebase, freelen, SMT_FREE); - - delete_movelist(fp); -} - -/* - * moves is computed from "frags" and "freemem". "space" lists - * free memory areas at our disposal, and is (src, cnt) only. - */ -int -syslinux_compute_movelist(struct syslinux_movelist **moves, - struct syslinux_movelist *ifrags, - struct syslinux_memmap *memmap) -{ - struct syslinux_memmap *mmap = NULL; - const struct syslinux_memmap *mm, *ep; - struct syslinux_movelist *frags = NULL; - struct syslinux_movelist *postcopy = NULL; - struct syslinux_movelist *mv; - struct syslinux_movelist *f, **fp; - struct syslinux_movelist *o, **op; - addr_t needbase, needlen, copysrc, copydst, copylen; - addr_t avail; - addr_t fstart, flen; - addr_t cbyte; - addr_t ep_len; - int rv = -1; - int reverse; - - dprintf("entering syslinux_compute_movelist()...\n"); - - if (setjmp(new_movelist_bail)) { -nomem: - dprintf("Out of working memory!\n"); - goto bail; - } - - *moves = NULL; - - /* Create our memory map. Anything that is SMT_FREE or SMT_ZERO is - fair game, but mark anything used by source material as SMT_ALLOC. */ - mmap = syslinux_init_memmap(); - if (!mmap) - goto nomem; - - frags = dup_movelist(ifrags); - - /* Process one-to-many conditions */ - shuffle_dealias(&frags, &postcopy); - - for (mm = memmap; mm->type != SMT_END; mm = mm->next) - add_freelist(&mmap, mm->start, mm->next->start - mm->start, - mm->type == SMT_ZERO ? SMT_FREE : mm->type); - - for (f = frags; f; f = f->next) - add_freelist(&mmap, f->src, f->len, SMT_ALLOC); - - /* As long as there are unprocessed fragments in the chain... */ - while ((fp = &frags, f = *fp)) { - -#if DEBUG - dprintf("Current free list:\n"); - syslinux_dump_memmap(stdout, mmap); - dprintf("Current frag list:\n"); - syslinux_dump_movelist(stdout, frags); -#endif - - /* Scan for fragments which can be discarded without action. */ - if (f->src == f->dst) { - delete_movelist(fp); - continue; - } - op = &f->next; - while ((o = *op)) { - if (o->src == o->dst) - delete_movelist(op); - else - op = &o->next; - } - - /* Scan for fragments which can be immediately moved - to their final destination, if so handle them now */ - for (op = fp; (o = *op); op = &o->next) { - if (o->src < o->dst && (o->dst - o->src) < o->len) { - /* "Shift up" type overlap */ - needlen = o->dst - o->src; - needbase = o->dst + (o->len - needlen); - reverse = 1; - cbyte = o->dst + o->len - 1; - } else if (o->src > o->dst && (o->src - o->dst) < o->len) { - /* "Shift down" type overlap */ - needlen = o->src - o->dst; - needbase = o->dst; - reverse = 0; - cbyte = o->dst; /* "Critical byte" */ - } else { - needlen = o->len; - needbase = o->dst; - reverse = 0; - cbyte = o->dst; /* "Critical byte" */ - } - - if (is_free_zone(mmap, needbase, needlen)) { - fp = op, f = o; - dprintf("!: 0x%08x bytes at 0x%08x -> 0x%08x\n", - f->len, f->src, f->dst); - copysrc = f->src; - copylen = needlen; - allocate_from(&mmap, needbase, copylen); - goto move_chunk; - } - } - - /* Ok, bother. Need to do real work at least with one chunk. */ - - dprintf("@: 0x%08x bytes at 0x%08x -> 0x%08x\n", - f->len, f->src, f->dst); - - /* See if we can move this chunk into place by claiming - the destination, or in the case of partial overlap, the - missing portion. */ - - if (f->src < f->dst && (f->dst - f->src) < f->len) { - /* "Shift up" type overlap */ - needlen = f->dst - f->src; - needbase = f->dst + (f->len - needlen); - reverse = 1; - cbyte = f->dst + f->len - 1; - } else if (f->src > f->dst && (f->src - f->dst) < f->len) { - /* "Shift down" type overlap */ - needlen = f->src - f->dst; - needbase = f->dst; - reverse = 0; - cbyte = f->dst; /* "Critical byte" */ - } else { - needlen = f->len; - needbase = f->dst; - reverse = 0; - cbyte = f->dst; - } - - dprintf("need: base = 0x%08x, len = 0x%08x, " - "reverse = %d, cbyte = 0x%08x\n", - needbase, needlen, reverse, cbyte); - - ep = is_free_zone(mmap, cbyte, 1); - if (ep) { - ep_len = ep->next->start - ep->start; - if (reverse) - avail = needbase + needlen - ep->start; - else - avail = ep_len - (needbase - ep->start); - } else { - avail = 0; - } - - if (avail) { - /* We can move at least part of this chunk into place without - further ado */ - dprintf("space: start 0x%08x, len 0x%08x, free 0x%08x\n", - ep->start, ep_len, avail); - copylen = min(needlen, avail); - - if (reverse) - allocate_from(&mmap, needbase + needlen - copylen, copylen); - else - allocate_from(&mmap, needbase, copylen); - - goto move_chunk; - } - - /* At this point, we need to evict something out of our space. - Find the object occupying the critical byte of our target space, - and move it out (the whole object if we can, otherwise a subset.) - Then move a chunk of ourselves into place. */ - for (op = &f->next, o = *op; o; op = &o->next, o = *op) { - - dprintf("O: 0x%08x bytes at 0x%08x -> 0x%08x\n", - o->len, o->src, o->dst); - - if (!(o->src <= cbyte && o->src + o->len > cbyte)) - continue; /* Not what we're looking for... */ - - /* Find somewhere to put it... */ - - if (is_free_zone(mmap, o->dst, o->len)) { - /* Score! We can move it into place directly... */ - copydst = o->dst; - copysrc = o->src; - copylen = o->len; - } else if (free_area(mmap, o->len, &fstart)) { - /* We can move the whole chunk */ - copydst = fstart; - copysrc = o->src; - copylen = o->len; - } else { - /* Well, copy as much as we can... */ - if (syslinux_memmap_largest(mmap, SMT_FREE, &fstart, &flen)) { - dprintf("No free memory at all!\n"); - goto bail; /* Stuck! */ - } - - /* Make sure we include the critical byte */ - copydst = fstart; - if (reverse) { - copysrc = max(o->src, cbyte + 1 - flen); - copylen = cbyte + 1 - copysrc; - } else { - copysrc = cbyte; - copylen = min(flen, o->len - (cbyte - o->src)); - } - } - allocate_from(&mmap, copydst, copylen); - - if (copylen < o->len) { - op = split_movelist(copysrc, copylen, op); - o = *op; - } - - mv = new_movelist(copydst, copysrc, copylen); - dprintf("C: 0x%08x bytes at 0x%08x -> 0x%08x\n", - mv->len, mv->src, mv->dst); - *moves = mv; - moves = &mv->next; - - o->src = copydst; - - if (copylen > needlen) { - /* We don't need all the memory we freed up. Mark it free. */ - if (copysrc < needbase) { - add_freelist(&mmap, copysrc, needbase - copysrc, SMT_FREE); - copylen -= (needbase - copysrc); - } - if (copylen > needlen) { - add_freelist(&mmap, copysrc + needlen, copylen - needlen, - SMT_FREE); - copylen = needlen; - } - } - reverse = 0; - goto move_chunk; - } - dprintf("Cannot find the chunk containing the critical byte\n"); - goto bail; /* Stuck! */ - -move_chunk: - move_chunk(&moves, &mmap, fp, copylen); - } - - /* Finally, append the postcopy chain to the end of the moves list */ - for (op = moves; (o = *op); op = &o->next) ; /* Locate the end of the list */ - *op = postcopy; - postcopy = NULL; - - rv = 0; -bail: - if (mmap) - syslinux_free_memmap(mmap); - if (frags) - free_movelist(&frags); - if (postcopy) - free_movelist(&postcopy); - return rv; -} - -#ifdef TEST - -#include <stdio.h> - -int main(int argc, char *argv[]) -{ - FILE *f; - unsigned long d, s, l; - struct syslinux_movelist *frags; - struct syslinux_movelist **fep = &frags; - struct syslinux_movelist *mv, *moves; - struct syslinux_memmap *memmap; - char line[BUFSIZ]; - - (void)argc; - - memmap = syslinux_init_memmap(); - - f = fopen(argv[1], "r"); - while (fgets(line, sizeof line, f) != NULL) { - if (sscanf(line, "%lx %lx %lx", &s, &d, &l) == 3) { - if (d) { - if (s == -1UL) { - syslinux_add_memmap(&memmap, d, l, SMT_ZERO); - } else { - mv = new_movelist(d, s, l); - *fep = mv; - fep = &mv->next; - } - } else { - syslinux_add_memmap(&memmap, s, l, SMT_FREE); - } - } - } - fclose(f); - - *fep = NULL; - - printf("Input move list:\n"); - syslinux_dump_movelist(stdout, frags); - printf("Input free list:\n"); - syslinux_dump_memmap(stdout, memmap); - - if (syslinux_compute_movelist(&moves, frags, memmap)) { - printf("Failed to compute a move sequence\n"); - return 1; - } else { - printf("Final move list:\n"); - syslinux_dump_movelist(stdout, moves); - return 0; - } -} - -#endif /* TEST */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_dns.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_dns.c deleted file mode 100644 index 6620396..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_dns.c +++ /dev/null @@ -1,75 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2010 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * pxe_dns.c - * - * Resolve a hostname via DNS - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdint.h> -#include <string.h> -#include <com32.h> - -#include <syslinux/pxe.h> - -/* Returns the status code from PXE (0 on success), - or -1 on invocation failure */ -uint32_t pxe_dns(const char *hostname) -{ - com32sys_t regs; - union { - unsigned char b[4]; - uint32_t ip; - } q; - char *lm_hostname; - - /* Is this a dot-quad? */ - if (sscanf(hostname, "%hhu.%hhu.%hhu.%hhu", - &q.b[0], &q.b[1], &q.b[2], &q.b[3]) == 4) - return q.ip; - - lm_hostname = lstrdup(hostname); - if (!lm_hostname) - return 0; - - memset(®s, 0, sizeof regs); - regs.eax.w[0] = 0x0010; - regs.es = SEG(lm_hostname); - /* regs.ebx.w[0] = OFFS(lm_hostname); */ - - __intcall(0x22, ®s, ®s); - - lfree(lm_hostname); - - if (regs.eflags.l & EFLAGS_CF) - return 0; - - return regs.eax.l; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_cached.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_cached.c deleted file mode 100644 index 4704037..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_cached.c +++ /dev/null @@ -1,96 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * pxe_get_cached.c - * - * PXE call "get cached info" - */ - -#include <stdlib.h> -#include <stdint.h> -#include <string.h> -#include <com32.h> - -#include <syslinux/pxe.h> - -/* Returns the status code from PXE (0 on success), - or -1 on invocation failure */ -int pxe_get_cached_info(int level, void **buf, size_t * len) -{ - const int max_dhcp_packet = 2048; - com32sys_t regs; - t_PXENV_GET_CACHED_INFO *gci; - void *bbuf, *nbuf; - int err; - - gci = lmalloc(sizeof *gci + max_dhcp_packet); - if (!gci) - return -1; - - memset(®s, 0, sizeof regs); - regs.eax.w[0] = 0x0009; - regs.ebx.w[0] = PXENV_GET_CACHED_INFO; - regs.es = SEG(gci); - /* regs.edi.w[0] = OFFS(gci); */ - - bbuf = &gci[1]; - - gci->Status = PXENV_STATUS_FAILURE; - gci->PacketType = level; - gci->BufferSize = gci->BufferLimit = max_dhcp_packet; - gci->Buffer.seg = SEG(bbuf); - gci->Buffer.offs = OFFS(bbuf); - - __intcall(0x22, ®s, ®s); - - if (regs.eflags.l & EFLAGS_CF) { - err = -1; - goto exit; - } - - if (gci->Status) { - err = gci->Status; - goto exit; - } - - nbuf = malloc(gci->BufferSize); - if (!nbuf) { - err = -1; - goto exit; - } - - memcpy(nbuf, bbuf, gci->BufferSize); - - *buf = nbuf; - *len = gci->BufferSize; - err = 0; - -exit: - lfree(gci); - return err; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_nic.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_nic.c deleted file mode 100644 index b301a75..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/pxe_get_nic.c +++ /dev/null @@ -1,67 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * pxe_get_cached.c - * - * PXE call "get cached info" - */ - -#include <stdlib.h> -#include <stdint.h> -#include <string.h> -#include <com32.h> - -#include <syslinux/pxe.h> - -/* Returns the status code from PXE (0 on success), - or -1 on invocation failure */ -int pxe_get_nic_type(t_PXENV_UNDI_GET_NIC_TYPE *gnt) -{ - com32sys_t regs; - t_PXENV_UNDI_GET_NIC_TYPE *lgnt; - - lgnt = lzalloc(sizeof *lgnt); - if (!lgnt) - return -1; - - memset(®s, 0, sizeof regs); - regs.eax.w[0] = 0x0009; - regs.ebx.w[0] = PXENV_UNDI_GET_NIC_TYPE; - regs.es = SEG(lgnt); - /* regs.edi.w[0] = OFFS(lgnt); */ - - __intcall(0x22, ®s, ®s); - - memcpy(gnt, lgnt, sizeof(t_PXENV_UNDI_GET_NIC_TYPE)); - lfree(lgnt); - - if (regs.eflags.l & EFLAGS_CF) - return -1; - - return gnt->Status; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/reboot.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/reboot.c deleted file mode 100644 index 2e3eb2b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/reboot.c +++ /dev/null @@ -1,47 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * reboot.c - * - * Provoke a system reboot - */ - -#include <stddef.h> -#include <com32.h> -#include <syslinux/reboot.h> - -__noreturn syslinux_reboot(int warm) -{ - uint16_t *const reboot_flag = (uint16_t *) 0x472; - - *reboot_flag = warm ? 0x1234 : 0; - __farcall(0xf000, 0xfff0, &__com32_zero_regs, NULL); - - while (1) - asm volatile ("hlt"); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_command.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_command.c deleted file mode 100644 index a0ac9a0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_command.c +++ /dev/null @@ -1,50 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/boot.h> -#include <stddef.h> -#include <string.h> -#include <com32.h> - -int syslinux_run_command(const char *command) -{ - static com32sys_t ireg; - char *lm_command = lstrdup(command); - - if (!lm_command) - return -1; - - ireg.eax.w[0] = 0x0003; - ireg.es = SEG(lm_command); - /* ireg.ebx.w[0] = OFFS(lm_command); */ - - __intcall(0x22, &ireg, NULL); - - /* Should not return even on failure, but in case... */ - lfree(lm_command); - return -1; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_default.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_default.c deleted file mode 100644 index 8dc9fbe..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/run_default.c +++ /dev/null @@ -1,41 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/boot.h> -#include <stddef.h> -#include <com32.h> - -__noreturn syslinux_run_default(void) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0004; - __intcall(0x22, &ireg, NULL); - - /* Should not return even on failure */ - for (;;) ; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/runimage.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/runimage.c deleted file mode 100644 index d5cdbc6..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/runimage.c +++ /dev/null @@ -1,70 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * runimage.c - * - * Load and run a syslinux image. - */ - -#include <stdlib.h> -#include <string.h> -#include <syslinux/boot.h> -#include <com32.h> - -void syslinux_run_kernel_image(const char *filename, const char *cmdline, - uint32_t ipappend_flags, uint32_t type) -{ - static com32sys_t ireg; - char *bbfilename = NULL; - char *bbcmdline = NULL; - - bbfilename = lstrdup(filename); - if (!bbfilename) - goto fail; - - bbcmdline = lstrdup(cmdline); - if (!bbcmdline) - goto fail; - - - ireg.eax.w[0] = 0x0016; - ireg.ds = SEG(bbfilename); - /* ireg.esi.w[0] = OFFS(bbfilename); */ - ireg.es = SEG(bbcmdline); - /* ireg.ebx.w[0] = OFFS(bbcmdline); */ - ireg.ecx.l = ipappend_flags; - ireg.edx.l = type; - - __intcall(0x22, &ireg, 0); - -fail: - if (bbcmdline) - lfree(bbcmdline); - if (bbfilename) - lfree(bbfilename); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/serial.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/serial.c deleted file mode 100644 index f06e8c8..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/serial.c +++ /dev/null @@ -1,52 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/serial.c - * - * SYSLINUX serial console query - */ - -#include <klibc/compiler.h> -#include <syslinux/config.h> -#include <string.h> -#include <com32.h> - -struct syslinux_serial_console_info __syslinux_serial_console_info; - -void __constructor __syslinux_get_serial_console_info(void) -{ - static com32sys_t reg; - - memset(®, 0, sizeof reg); - reg.eax.w[0] = 0x000b; - __intcall(0x22, ®, ®); - - __syslinux_serial_console_info.iobase = reg.edx.w[0]; - __syslinux_serial_console_info.divisor = reg.ecx.w[0]; - __syslinux_serial_console_info.flowctl = reg.ebx.w[0]; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/setadv.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/setadv.c deleted file mode 100644 index 40f00a4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/setadv.c +++ /dev/null @@ -1,116 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/setadv.c - * - * (Over)write a data item in the auxilliary data vector. To - * delete an item, set its length to zero. - * - * Return 0 on success, -1 on error, and set errno. - * - * NOTE: Data is not written to disk unless - * syslinux_adv_write() is called. - */ - -#include <syslinux/adv.h> -#include <klibc/compiler.h> -#include <inttypes.h> -#include <string.h> -#include <errno.h> -#include <alloca.h> - -int syslinux_setadv(int tag, size_t size, const void *data) -{ - uint8_t *p, *advtmp; - size_t rleft, left; - - if ((unsigned)tag - 1 > 254) { - errno = EINVAL; - return -1; /* Impossible tag value */ - } - - if (size > 255) { - errno = ENOSPC; /* Max 255 bytes for a data item */ - return -1; - } - - rleft = left = syslinux_adv_size(); - p = advtmp = alloca(left); - memcpy(p, syslinux_adv_ptr(), left); /* Make working copy */ - - while (rleft >= 2) { - uint8_t ptag = p[0]; - size_t plen = p[1] + 2; - - if (ptag == ADV_END) - break; - - if (ptag == tag) { - /* Found our tag. Delete it. */ - - if (plen >= rleft) { - /* Entire remainder is our tag */ - break; - } - memmove(p, p + plen, rleft - plen); - rleft -= plen; /* Fewer bytes to read, but not to write */ - } else { - /* Not our tag */ - if (plen > rleft) - break; /* Corrupt tag (overrun) - overwrite it */ - - left -= plen; - rleft -= plen; - p += plen; - } - } - - /* Now (p, left) reflects the position to write in and how much space - we have for our data. */ - - if (size) { - if (left < size + 2) { - errno = ENOSPC; /* Not enough space for data */ - return -1; - } - - *p++ = tag; - *p++ = size; - memcpy(p, data, size); - p += size; - left -= size + 2; - } - - memset(p, 0, left); - - /* If we got here, everything went OK, commit the write to low memory */ - memcpy(syslinux_adv_ptr(), advtmp, syslinux_adv_size()); - - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle.c deleted file mode 100644 index 6b5a601..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle.c +++ /dev/null @@ -1,275 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * shuffle.c - * - * Common code for "shuffle and boot" operation; generates a shuffle list - * and puts it in the bounce buffer. Returns the number of shuffle - * descriptors. - */ - -#include <stdlib.h> -#include <string.h> -#include <inttypes.h> -#include <com32.h> -#include <minmax.h> -#include <syslinux/movebits.h> -#include <klibc/compiler.h> - -#ifndef DEBUG -# define DEBUG 0 -#endif - -#define dprintf(f, ...) ((void)0) -#define dprintf2(f, ...) ((void)0) - -#if DEBUG -# include <stdio.h> -# undef dprintf -# define dprintf printf -# if DEBUG > 1 -# undef dprintf2 -# define dprintf2 printf -# endif -#endif - -struct shuffle_descriptor { - uint32_t dst, src, len; -}; - -static int shuffler_size; - -static void __constructor __syslinux_get_shuffer_size(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x0023; - __intcall(0x22, ®, ®); - - shuffler_size = (reg.eflags.l & EFLAGS_CF) ? 2048 : reg.ecx.w[0]; -} - -/* - * Allocate descriptor memory in these chunks; if this is large we may - * waste memory, if it is small we may get slow convergence. - */ -#define DESC_BLOCK_SIZE 256 - -int syslinux_do_shuffle(struct syslinux_movelist *fraglist, - struct syslinux_memmap *memmap, - addr_t entry_point, addr_t entry_type, - uint16_t bootflags) -{ - int rv = -1; - struct syslinux_movelist *moves = NULL, *mp; - struct syslinux_memmap *rxmap = NULL, *ml; - struct shuffle_descriptor *dp, *dbuf; - int np; - int desc_blocks, need_blocks; - int need_ptrs; - addr_t desczone, descfree, descaddr, descoffs; - int nmoves, nzero; - com32sys_t ireg; - - descaddr = 0; - dp = dbuf = NULL; - - /* Count the number of zero operations */ - nzero = 0; - for (ml = memmap; ml->type != SMT_END; ml = ml->next) { - if (ml->type == SMT_ZERO) - nzero++; - } - - /* Find the largest contiguous region unused by input *and* output; - this is where we put the move descriptor list and safe area */ - - rxmap = syslinux_dup_memmap(memmap); - if (!rxmap) - goto bail; - /* Avoid using the low 1 MB for the shuffle area -- this avoids - possible interference with the real mode code or stack */ - if (syslinux_add_memmap(&rxmap, 0, 1024 * 1024, SMT_RESERVED)) - goto bail; - for (mp = fraglist; mp; mp = mp->next) { - if (syslinux_add_memmap(&rxmap, mp->src, mp->len, SMT_ALLOC) || - syslinux_add_memmap(&rxmap, mp->dst, mp->len, SMT_ALLOC)) - goto bail; - } - if (syslinux_memmap_largest(rxmap, SMT_FREE, &desczone, &descfree)) - goto bail; - - syslinux_free_memmap(rxmap); - - dprintf("desczone = 0x%08x, descfree = 0x%08x\n", desczone, descfree); - - rxmap = syslinux_dup_memmap(memmap); - if (!rxmap) - goto bail; - - desc_blocks = (nzero + DESC_BLOCK_SIZE - 1) / DESC_BLOCK_SIZE; - for (;;) { - /* We want (desc_blocks) allocation blocks, plus the terminating - descriptor, plus the shuffler safe area. */ - addr_t descmem = desc_blocks * - sizeof(struct shuffle_descriptor) * DESC_BLOCK_SIZE - + sizeof(struct shuffle_descriptor) + shuffler_size; - - descaddr = (desczone + descfree - descmem) & ~3; - - if (descaddr < desczone) - goto bail; /* No memory block large enough */ - - /* Mark memory used by shuffle descriptors as reserved */ - if (syslinux_add_memmap(&rxmap, descaddr, descmem, SMT_RESERVED)) - goto bail; - -#if DEBUG > 1 - syslinux_dump_movelist(stdout, fraglist); -#endif - - if (syslinux_compute_movelist(&moves, fraglist, rxmap)) - goto bail; - - nmoves = 0; - for (mp = moves; mp; mp = mp->next) - nmoves++; - - need_blocks = (nmoves + nzero + DESC_BLOCK_SIZE - 1) / DESC_BLOCK_SIZE; - - if (desc_blocks >= need_blocks) - break; /* Sufficient memory, yay */ - - desc_blocks = need_blocks; /* Try again... */ - } - -#if DEBUG > 1 - dprintf("Final movelist:\n"); - syslinux_dump_movelist(stdout, moves); -#endif - - syslinux_free_memmap(rxmap); - rxmap = NULL; - - need_ptrs = nmoves + nzero + 1; - dbuf = malloc(need_ptrs * sizeof(struct shuffle_descriptor)); - if (!dbuf) - goto bail; - - descoffs = descaddr - (addr_t) dbuf; - -#if DEBUG - dprintf("nmoves = %d, nzero = %d, dbuf = %p, offs = 0x%08x\n", - nmoves, nzero, dbuf, descoffs); -#endif - - /* Copy the move sequence into the descriptor buffer */ - np = 0; - dp = dbuf; - for (mp = moves; mp; mp = mp->next) { - dp->dst = mp->dst; - dp->src = mp->src; - dp->len = mp->len; - dprintf2("[ %08x %08x %08x ]\n", dp->dst, dp->src, dp->len); - dp++; - np++; - } - - /* Copy bzero operations into the descriptor buffer */ - for (ml = memmap; ml->type != SMT_END; ml = ml->next) { - if (ml->type == SMT_ZERO) { - dp->dst = ml->start; - dp->src = (addr_t) - 1; /* bzero region */ - dp->len = ml->next->start - ml->start; - dprintf2("[ %08x %08x %08x ]\n", dp->dst, dp->src, dp->len); - dp++; - np++; - } - } - - /* Finally, record the termination entry */ - dp->dst = entry_point; - dp->src = entry_type; - dp->len = 0; - dp++; - np++; - - if (np != need_ptrs) { - dprintf("!!! np = %d : nmoves = %d, nzero = %d, desc_blocks = %d\n", - np, nmoves, nzero, desc_blocks); - } - - rv = 0; - -bail: - /* This is safe only because free() doesn't use the bounce buffer!!!! */ - if (moves) - syslinux_free_movelist(moves); - if (rxmap) - syslinux_free_memmap(rxmap); - - if (rv) - return rv; - - /* Actually do it... */ - memset(&ireg, 0, sizeof ireg); - ireg.edi.l = descaddr; - ireg.esi.l = (addr_t) dbuf; - ireg.ecx.l = (addr_t) dp - (addr_t) dbuf; - ireg.edx.w[0] = bootflags; - ireg.eax.w[0] = 0x0024; - __intcall(0x22, &ireg, NULL); - - return -1; /* Shouldn't have returned! */ -} - -/* - * Common helper routine: takes a memory map and blots out the - * zones which are used in the destination of a fraglist - */ -struct syslinux_memmap *syslinux_target_memmap(struct syslinux_movelist - *fraglist, - struct syslinux_memmap *memmap) -{ - struct syslinux_memmap *tmap; - struct syslinux_movelist *mp; - - tmap = syslinux_dup_memmap(memmap); - if (!tmap) - return NULL; - - for (mp = fraglist; mp; mp = mp->next) { - if (syslinux_add_memmap(&tmap, mp->dst, mp->len, SMT_ALLOC)) { - syslinux_free_memmap(tmap); - return NULL; - } - } - - return tmap; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_pm.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_pm.c deleted file mode 100644 index 5e3183b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_pm.c +++ /dev/null @@ -1,77 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * shuffle_pm.c - * - * Shuffle and boot to protected mode code - */ - -#include <inttypes.h> -#include <syslinux/movebits.h> -#include <syslinux/bootpm.h> - -int syslinux_shuffle_boot_pm(struct syslinux_movelist *fraglist, - struct syslinux_memmap *memmap, - uint16_t bootflags, struct syslinux_pm_regs *regs) -{ - uint8_t handoff_code[9 * 5], *p; - const uint32_t *rp; - int i, rv; - struct syslinux_memmap *tmap; - addr_t regstub, stublen; - - tmap = syslinux_target_memmap(fraglist, memmap); - if (!tmap) - return -1; - - regstub = 0x800; /* Locate anywhere above this point */ - stublen = sizeof handoff_code; - rv = syslinux_memmap_find(tmap, SMT_FREE, ®stub, &stublen, 1); - syslinux_free_memmap(tmap); - if (rv) - return -1; - - /* Build register-setting stub */ - p = handoff_code; - rp = (const uint32_t *)regs; - for (i = 0; i < 8; i++) { - *p = 0xb8 + i; /* MOV gpr,imm32 */ - *(uint32_t *) (p + 1) = *rp++; - p += 5; - } - *p = 0xe9; /* JMP */ - *(uint32_t *) (p + 1) = regs->eip - regstub - sizeof handoff_code; - - /* Add register-setting stub to shuffle list */ - if (syslinux_add_movelist(&fraglist, regstub, (addr_t) handoff_code, - sizeof handoff_code)) - return -1; - - return syslinux_do_shuffle(fraglist, memmap, regstub, 1, bootflags); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_rm.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_rm.c deleted file mode 100644 index a7d16d6..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/shuffle_rm.c +++ /dev/null @@ -1,171 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * shuffle_rm.c - * - * Shuffle and boot to protected mode code - */ - -#include <stdlib.h> -#include <inttypes.h> -#include <com32.h> -#include <string.h> -#include <syslinux/movebits.h> -#include <syslinux/bootrm.h> - -enum gpr_index { R_AX, R_CX, R_DX, R_BX, R_SP, R_BP, R_SI, R_DI }; -enum seg_index { R_ES, R_CS, R_SS, R_DS, R_FS, R_GS }; - -#define ST8(P,V) \ - do { \ - uint8_t *_p = (void *)(P); \ - *_p++ = (V); \ - (P) = (void *)_p; \ - } while (0); -#define ST16(P,V) \ - do { \ - uint16_t *_p = (void *)(P); \ - *_p++ = (V); \ - (P) = (void *)_p; \ - } while (0) -#define ST32(P,V) \ - do { \ - uint32_t *_p = (void *)(P); \ - *_p++ = (V); \ - (P) = (void *)_p; \ - } while (0) - -#define MOV_TO_SEG(P,S,R) \ - ST16(P, 0xc08e + ((R) << 8) + ((S) << 11)) -#define MOV_TO_R16(P,R,V) \ - do { \ - ST8(P, 0xb8 + (R)); \ - ST16(P, V); \ - } while (0) -#define MOV_TO_R32(P,R,V) \ - do { \ - ST16(P, 0xb866 + ((R) << 8)); \ - ST32(P, V); \ - } while (0) - -int syslinux_shuffle_boot_rm(struct syslinux_movelist *fraglist, - struct syslinux_memmap *memmap, - uint16_t bootflags, struct syslinux_rm_regs *regs) -{ - const struct syslinux_rm_regs_alt { - uint16_t seg[6]; - uint32_t gpr[8]; - uint32_t csip; - bool sti; - } *rp; - int i, rv; - uint8_t handoff_code[8 + 5 * 5 + 8 * 6 + 1 + 5], *p; - uint16_t off; - struct syslinux_memmap *tmap; - addr_t regstub, stublen; - /* Assign GPRs for each sreg, don't use AX and SP */ - static const uint8_t gpr_for_seg[6] = - { R_CX, R_DX, R_BX, R_BP, R_SI, R_DI }; - - tmap = syslinux_target_memmap(fraglist, memmap); - if (!tmap) - return -1; - - /* - * Search for a good place to put the real-mode register stub. - * We prefer it as low as possible above 0x800. KVM barfs horribly - * if we're not aligned to a paragraph boundary, so set the alignment - * appropriately. - */ - regstub = 0x800; - stublen = sizeof handoff_code; - rv = syslinux_memmap_find(tmap, SMT_FREE, ®stub, &stublen, 16); - - if (rv || (regstub > 0x100000 - sizeof handoff_code)) { - /* - * Uh-oh. This isn't real-mode accessible memory. - * It might be possible to do something insane here like - * putting the stub in the IRQ vectors, or in the 0x5xx segment. - * This code tries the 0x510-0x7ff range and hopes for the best. - */ - regstub = 0x510; /* Try the 0x5xx segment... */ - stublen = sizeof handoff_code; - rv = syslinux_memmap_find(tmap, SMT_FREE, ®stub, &stublen, 16); - - if (!rv && (regstub > 0x100000 - sizeof handoff_code)) - rv = -1; /* No acceptable memory found */ - } - - syslinux_free_memmap(tmap); - if (rv) - return -1; - - /* Build register-setting stub */ - p = handoff_code; - rp = (const struct syslinux_rm_regs_alt *)regs; - - /* Set up GPRs with segment registers - don't use AX */ - for (i = 0; i < 6; i++) { - if (i != R_CS) - MOV_TO_R16(p, gpr_for_seg[i], rp->seg[i]); - } - - /* Actual transition to real mode */ - ST32(p, 0xeac0220f); /* MOV CR0,EAX; JMP FAR */ - off = (p - handoff_code) + 4; - ST16(p, off); /* Offset */ - ST16(p, regstub >> 4); /* Segment */ - - /* Load SS and ESP immediately */ - MOV_TO_SEG(p, R_SS, R_BX); - MOV_TO_R32(p, R_SP, rp->gpr[R_SP]); - - /* Load the other segments */ - MOV_TO_SEG(p, R_ES, R_CX); - MOV_TO_SEG(p, R_DS, R_BP); - MOV_TO_SEG(p, R_FS, R_SI); - MOV_TO_SEG(p, R_GS, R_DI); - - for (i = 0; i < 8; i++) { - if (i != R_SP) - MOV_TO_R32(p, i, rp->gpr[i]); - } - - ST8(p, rp->sti ? 0xfb : 0xfa); /* STI/CLI */ - - ST8(p, 0xea); /* JMP FAR */ - ST32(p, rp->csip); - - /* Add register-setting stub to shuffle list */ - if (syslinux_add_movelist(&fraglist, regstub, (addr_t) handoff_code, - sizeof handoff_code)) - return -1; - - return syslinux_do_shuffle(fraglist, memmap, regstub, 0, bootflags); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/version.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/version.c deleted file mode 100644 index 15b617b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/version.c +++ /dev/null @@ -1,46 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -#include <syslinux/config.h> -#include <klibc/compiler.h> -#include <com32.h> - -struct syslinux_version __syslinux_version; - -void __constructor __syslinux_get_version(void) -{ - static com32sys_t reg; - - reg.eax.w[0] = 0x0001; - __intcall(0x22, ®, ®); - - __syslinux_version.version = reg.ecx.w[0]; - __syslinux_version.max_api = reg.eax.w[0]; - __syslinux_version.filesystem = reg.edx.b[0]; - __syslinux_version.version_string = MK_PTR(reg.es, reg.esi.w[0]); - __syslinux_version.copyright_string = MK_PTR(reg.es, reg.edi.w[0]); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/fontquery.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/fontquery.c deleted file mode 100644 index dd5d86e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/fontquery.c +++ /dev/null @@ -1,54 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/video/forcetext.c - */ - -#include <syslinux/video.h> -#include <com32.h> - -/* - * Returns height of font or zero if no custom font loaded - */ -int syslinux_font_query(uint8_t **font) -{ - static com32sys_t ireg; - com32sys_t oreg; - int height; - - ireg.eax.w[0] = 0x0018; - __intcall(0x22, &ireg, &oreg); - - height = !(oreg.eflags.l & EFLAGS_CF) ? oreg.eax.b[0] : 0; - if (height) - *font = MK_PTR(oreg.es, oreg.ebx.w[0]); - - return height; -} - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/forcetext.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/forcetext.c deleted file mode 100644 index 136cb27..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/forcetext.c +++ /dev/null @@ -1,42 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/video/forcetext.c - */ - -#include <syslinux/video.h> -#include <com32.h> - -void syslinux_force_text_mode(void) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0005; - __intcall(0x22, &ireg, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/reportmode.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/reportmode.c deleted file mode 100644 index 57fd6fd..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/video/reportmode.c +++ /dev/null @@ -1,45 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2008 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * syslinux/video/reportmode.c - */ - -#include <syslinux/video.h> -#include <com32.h> - -void syslinux_report_video_mode(uint16_t flags, uint16_t xsize, uint16_t ysize) -{ - static com32sys_t ireg; - - ireg.eax.w[0] = 0x0017; - ireg.ebx.w[0] = flags; - ireg.ecx.w[0] = xsize; - ireg.edx.w[0] = ysize; - __intcall(0x22, &ireg, NULL); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zloadfile.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zloadfile.c deleted file mode 100644 index 286d070..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zloadfile.c +++ /dev/null @@ -1,59 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2005-2008 H. Peter Anvin - All Rights Reserved - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * zloadfile.c - * - * Read the contents of a possibly compressed data file into a malloc'd buffer - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <string.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <syslinux/zio.h> - -#include <syslinux/loadfile.h> - -#define INCREMENTAL_CHUNK 1024*1024 - -int zloadfile(const char *filename, void **ptr, size_t * len) -{ - FILE *f; - int rv; - - f = zfopen(filename, "r"); - if (!f) - return -1; - - rv = floadfile(f, ptr, len, NULL, 0); - fclose(f); - - return rv; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zonelist.c b/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zonelist.c deleted file mode 100644 index b548211..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/syslinux/zonelist.c +++ /dev/null @@ -1,301 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved - * Copyright 2009 Intel Corporation; author: H. Peter Anvin - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, - * copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following - * conditions: - * - * The above copyright notice and this permission notice shall - * be included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES - * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * ----------------------------------------------------------------------- */ - -/* - * zonelist.c - * - * Deal with syslinux_memmap's, which are data structures designed to - * hold memory maps. A zonelist is a sorted linked list of memory - * ranges, with the guarantee that no two adjacent blocks have the - * same range type. Additionally, all unspecified memory have a range - * type of zero. - */ - -#include <stdlib.h> -#include <syslinux/align.h> -#include <syslinux/movebits.h> - -#ifndef DEBUG -# ifdef TEST -# define DEBUG 1 -# else -# define DEBUG 0 -# endif -#endif - -#if DEBUG -# include <stdio.h> -# define dprintf printf -#else -# define dprintf(...) ((void)0) -#endif - -/* - * Create an empty syslinux_memmap list. - */ -struct syslinux_memmap *syslinux_init_memmap(void) -{ - struct syslinux_memmap *sp, *ep; - - sp = malloc(sizeof(*sp)); - if (!sp) - return NULL; - - ep = malloc(sizeof(*ep)); - if (!ep) { - free(sp); - return NULL; - } - - sp->start = 0; - sp->type = SMT_UNDEFINED; - sp->next = ep; - - ep->start = 0; /* Wrap around... */ - ep->type = SMT_END; /* End of chain */ - ep->next = NULL; - - return sp; -} - -/* - * Add an item to a syslinux_memmap list, potentially overwriting - * what is already there. - */ -int syslinux_add_memmap(struct syslinux_memmap **list, - addr_t start, addr_t len, - enum syslinux_memmap_types type) -{ - addr_t last; - struct syslinux_memmap *mp, **mpp; - struct syslinux_memmap *range; - enum syslinux_memmap_types oldtype; - -#if DEBUG - dprintf("Input memmap:\n"); - syslinux_dump_memmap(stdout, *list); -#endif - - /* Remove this to make len == 0 mean all of memory */ - if (len == 0) - return 0; - - /* Last byte -- to avoid rollover */ - last = start + len - 1; - - mpp = list; - oldtype = SMT_END; /* Impossible value */ - while (mp = *mpp, start > mp->start && mp->type != SMT_END) { - oldtype = mp->type; - mpp = &mp->next; - } - - if (start < mp->start || mp->type == SMT_END) { - if (type != oldtype) { - /* Splice in a new start token */ - range = malloc(sizeof(*range)); - if (!range) - return -1; - - range->start = start; - range->type = type; - *mpp = range; - range->next = mp; - mpp = &range->next; - } - } else { - /* mp is exactly aligned with the start of our region */ - if (type != oldtype) { - /* Reclaim this entry as our own boundary marker */ - oldtype = mp->type; - mp->type = type; - mpp = &mp->next; - } - } - - while (mp = *mpp, last > mp->start - 1) { - oldtype = mp->type; - *mpp = mp->next; - free(mp); - } - - if (last < mp->start - 1) { - if (oldtype != type) { - /* Need a new end token */ - range = malloc(sizeof(*range)); - if (!range) - return -1; - - range->start = last + 1; - range->type = oldtype; - *mpp = range; - range->next = mp; - } - } else { - if (mp->type == type) { - /* Merge this region with the following one */ - *mpp = mp->next; - free(mp); - } - } - -#if DEBUG - dprintf("After adding (%#x,%#x,%d):\n", start, len, type); - syslinux_dump_memmap(stdout, *list); -#endif - - return 0; -} - -/* - * Verify what type a certain memory region is. This function returns - * SMT_ERROR if the memory region has multiple types. - */ -enum syslinux_memmap_types syslinux_memmap_type(struct syslinux_memmap *list, - addr_t start, addr_t len) -{ - addr_t last, llast; - - last = start + len - 1; - - while (list->type != SMT_END) { - llast = list->next->start - 1; - if (list->start <= start) { - if (llast >= last) - return list->type; /* Region has a well-defined type */ - else if (llast >= start) - return SMT_ERROR; /* Crosses region boundary */ - } - list = list->next; - } - - return SMT_ERROR; /* Internal error? */ -} - -/* - * Find the largest zone of a specific type. Returns -1 on failure. - */ -int syslinux_memmap_largest(struct syslinux_memmap *list, - enum syslinux_memmap_types type, - addr_t * start, addr_t * len) -{ - addr_t size, best_size = 0; - struct syslinux_memmap *best = NULL; - - while (list->type != SMT_END) { - size = list->next->start - list->start; - - if (list->type == type && size > best_size) { - best = list; - best_size = size; - } - - list = list->next; - } - - if (!best) - return -1; - - *start = best->start; - *len = best_size; - - return 0; -} - -/* - * Find the first (lowest address) zone of a specific type and of - * a certain minimum size, with an optional starting address. - * The input values of start and len are used as minima. - */ -int syslinux_memmap_find(struct syslinux_memmap *list, - enum syslinux_memmap_types type, - addr_t * start, addr_t * len, addr_t align) -{ - addr_t min_start = *start; - addr_t min_len = *len; - - while (list->type != SMT_END) { - if (list->type == type) { - addr_t xstart, xlen; - xstart = min_start > list->start ? min_start : list->start; - xstart = ALIGN_UP(xstart, align); - - if (xstart < list->next->start) { - xlen = list->next->start - xstart; - if (xlen >= min_len) { - *start = xstart; - *len = xlen; - return 0; - } - } - } - list = list->next; - } - - return -1; /* Not found */ -} - -/* - * Free a zonelist. - */ -void syslinux_free_memmap(struct syslinux_memmap *list) -{ - struct syslinux_memmap *ml; - - while (list) { - ml = list; - list = list->next; - free(ml); - } -} - -/* - * Duplicate a zonelist. Returns NULL on failure. - */ -struct syslinux_memmap *syslinux_dup_memmap(struct syslinux_memmap *list) -{ - struct syslinux_memmap *newlist = NULL, **nlp = &newlist; - struct syslinux_memmap *ml; - - while (list) { - ml = malloc(sizeof(*ml)); - if (!ml) { - syslinux_free_memmap(newlist); - return NULL; - } - ml->start = list->start; - ml->type = list->type; - ml->next = NULL; - *nlp = ml; - nlp = &ml->next; - - list = list->next; - } - - return newlist; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vasprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vasprintf.c deleted file mode 100644 index a1215a3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vasprintf.c +++ /dev/null @@ -1,25 +0,0 @@ -/* - * vasprintf.c - */ - -#include <stdio.h> -#include <stdlib.h> -#include <stdarg.h> - -int vasprintf(char **bufp, const char *format, va_list ap) -{ - va_list ap1; - int bytes; - char *p; - - va_copy(ap1, ap); - - bytes = vsnprintf(NULL, 0, format, ap1) + 1; - va_end(ap1); - - *bufp = p = malloc(bytes); - if (!p) - return -1; - - return vsnprintf(p, bytes, format, ap); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vdprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vdprintf.c deleted file mode 100644 index d74f278..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vdprintf.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * vdprintf.c - */ - -#include <stdio.h> -#include <string.h> -#include <stdarg.h> -#include <unistd.h> -#include <inttypes.h> -#include <sys/io.h> -#include <sys/cpu.h> - -#undef DEBUG -#define DEBUG 1 -#include <dprintf.h> - -#define BUFFER_SIZE 4096 - -enum serial_port_regs { - THR = 0, - RBR = 0, - DLL = 0, - DLM = 1, - IER = 1, - IIR = 2, - FCR = 2, - LCR = 3, - MCR = 4, - LSR = 5, - MSR = 6, - SCR = 7, -}; - -#ifndef DEBUG_PORT -# define DEBUG_PORT 0x03f8 /* I/O base address */ -#endif - -static const uint16_t debug_base = DEBUG_PORT; - -static void debug_putc(char c) -{ - if (c == '\n') - debug_putc('\r'); - - while ((inb(debug_base + LSR) & 0x20) == 0) - cpu_relax(); - outb(c, debug_base + THR); -} - -void vdprintf(const char *format, va_list ap) -{ - int rv; - char buffer[BUFFER_SIZE]; - char *p; - static bool debug_init = false; - static bool debug_ok = false; - - rv = vsnprintf(buffer, BUFFER_SIZE, format, ap); - - if (rv < 0) - return; - - if (rv > BUFFER_SIZE - 1) - rv = BUFFER_SIZE - 1; - - /* - * This unconditionally outputs to a serial port at 0x3f8 regardless of - * if one is enabled or not (this means we don't have to enable the real - * serial console and therefore get conflicting output.) - */ - if (__unlikely(!debug_init)) { - uint8_t dll, dlm, lcr; - - debug_init = true; - - cli(); - - /* Initialize the serial port to 115200 n81 with FIFOs enabled */ - outb(0x83, debug_base + LCR); - outb(0x01, debug_base + DLL); - outb(0x00, debug_base + DLM); - (void)inb(debug_base + IER); /* Synchronize */ - dll = inb(debug_base + DLL); - dlm = inb(debug_base + DLM); - lcr = inb(debug_base + LCR); - - outb(0x03, debug_base + LCR); - (void)inb(debug_base + IER); /* Synchronize */ - - outb(0x00, debug_base + IER); - (void)inb(debug_base + IER); /* Synchronize */ - - sti(); - - if (dll != 0x01 || dlm != 0x00 || lcr != 0x83) { - /* No serial port present */ - return; - } - - outb(0x01, debug_base + FCR); - (void)inb(debug_base + IER); /* Synchronize */ - if (inb(debug_base + IIR) < 0xc0) { - outb(0x00, debug_base + FCR); /* Disable non-functional FIFOs */ - (void)inb(debug_base + IER); /* Synchronize */ - } - - debug_ok = true; - } - - if (!debug_ok) - return; - - p = buffer; - while (rv--) - debug_putc(*p++); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vfprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vfprintf.c deleted file mode 100644 index be08421..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vfprintf.c +++ /dev/null @@ -1,26 +0,0 @@ -/* - * vfprintf.c - */ - -#include <stdio.h> -#include <string.h> -#include <stdarg.h> -#include <unistd.h> - -#define BUFFER_SIZE 32768 - -int vfprintf(FILE * file, const char *format, va_list ap) -{ - int rv; - char buffer[BUFFER_SIZE]; - - rv = vsnprintf(buffer, BUFFER_SIZE, format, ap); - - if (rv < 0) - return rv; - - if (rv > BUFFER_SIZE - 1) - rv = BUFFER_SIZE - 1; - - return _fwrite(buffer, rv, file); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vprintf.c deleted file mode 100644 index 486f720..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vprintf.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * vprintf.c - */ - -#include <stdio.h> -#include <stdarg.h> - -int vprintf(const char *format, va_list ap) -{ - return vfprintf(stdout, format, ap); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vsnprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vsnprintf.c deleted file mode 100644 index 1d1d2a2..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vsnprintf.c +++ /dev/null @@ -1,454 +0,0 @@ -/* - * vsnprintf.c - * - * vsnprintf(), from which the rest of the printf() - * family is built - */ - -#include <stdarg.h> -#include <stddef.h> -#include <inttypes.h> -#include <string.h> -#include <limits.h> -#include <stdio.h> - -enum flags { - FL_ZERO = 0x01, /* Zero modifier */ - FL_MINUS = 0x02, /* Minus modifier */ - FL_PLUS = 0x04, /* Plus modifier */ - FL_TICK = 0x08, /* ' modifier */ - FL_SPACE = 0x10, /* Space modifier */ - FL_HASH = 0x20, /* # modifier */ - FL_SIGNED = 0x40, /* Number is signed */ - FL_UPPER = 0x80 /* Upper case digits */ -}; - -/* These may have to be adjusted on certain implementations */ -enum ranks { - rank_char = -2, - rank_short = -1, - rank_int = 0, - rank_long = 1, - rank_longlong = 2 -}; - -#define MIN_RANK rank_char -#define MAX_RANK rank_longlong - -#define INTMAX_RANK rank_longlong -#define SIZE_T_RANK rank_long -#define PTRDIFF_T_RANK rank_long - -#define EMIT(x) ({ if (o<n){*q++ = (x);} o++; }) - -static size_t -format_int(char *q, size_t n, uintmax_t val, enum flags flags, - int base, int width, int prec) -{ - char *qq; - size_t o = 0, oo; - static const char lcdigits[] = "0123456789abcdef"; - static const char ucdigits[] = "0123456789ABCDEF"; - const char *digits; - uintmax_t tmpval; - int minus = 0; - int ndigits = 0, nchars; - int tickskip, b4tick; - - /* Select type of digits */ - digits = (flags & FL_UPPER) ? ucdigits : lcdigits; - - /* If signed, separate out the minus */ - if (flags & FL_SIGNED && (intmax_t) val < 0) { - minus = 1; - val = (uintmax_t) (-(intmax_t) val); - } - - /* Count the number of digits needed. This returns zero for 0. */ - tmpval = val; - while (tmpval) { - tmpval /= base; - ndigits++; - } - - /* Adjust ndigits for size of output */ - - if (flags & FL_HASH && base == 8) { - if (prec < ndigits + 1) - prec = ndigits + 1; - } - - if (ndigits < prec) { - ndigits = prec; /* Mandatory number padding */ - } else if (val == 0) { - ndigits = 1; /* Zero still requires space */ - } - - /* For ', figure out what the skip should be */ - if (flags & FL_TICK) { - tickskip = (base == 16) ? 4 : 3; - } else { - tickskip = ndigits; /* No tick marks */ - } - - /* Tick marks aren't digits, but generated by the number converter */ - ndigits += (ndigits - 1) / tickskip; - - /* Now compute the number of nondigits */ - nchars = ndigits; - - if (minus || (flags & (FL_PLUS | FL_SPACE))) - nchars++; /* Need space for sign */ - if ((flags & FL_HASH) && base == 16) { - nchars += 2; /* Add 0x for hex */ - } - - /* Emit early space padding */ - if (!(flags & (FL_MINUS | FL_ZERO)) && width > nchars) { - while (width > nchars) { - EMIT(' '); - width--; - } - } - - /* Emit nondigits */ - if (minus) - EMIT('-'); - else if (flags & FL_PLUS) - EMIT('+'); - else if (flags & FL_SPACE) - EMIT(' '); - - if ((flags & FL_HASH) && base == 16) { - EMIT('0'); - EMIT((flags & FL_UPPER) ? 'X' : 'x'); - } - - /* Emit zero padding */ - if ((flags & (FL_MINUS | FL_ZERO)) == FL_ZERO && width > ndigits) { - while (width > nchars) { - EMIT('0'); - width--; - } - } - - /* Generate the number. This is done from right to left. */ - q += ndigits; /* Advance the pointer to end of number */ - o += ndigits; - qq = q; - oo = o; /* Temporary values */ - - b4tick = tickskip; - while (ndigits > 0) { - if (!b4tick--) { - qq--; - oo--; - ndigits--; - if (oo < n) - *qq = '_'; - b4tick = tickskip - 1; - } - qq--; - oo--; - ndigits--; - if (oo < n) - *qq = digits[val % base]; - val /= base; - } - - /* Emit late space padding */ - while ((flags & FL_MINUS) && width > nchars) { - EMIT(' '); - width--; - } - - return o; -} - -int vsnprintf(char *buffer, size_t n, const char *format, va_list ap) -{ - const char *p = format; - char ch; - char *q = buffer; - size_t o = 0; /* Number of characters output */ - uintmax_t val = 0; - int rank = rank_int; /* Default rank */ - int width = 0; - int prec = -1; - int base; - size_t sz; - enum flags flags = 0; - enum { - st_normal, /* Ground state */ - st_flags, /* Special flags */ - st_width, /* Field width */ - st_prec, /* Field precision */ - st_modifiers /* Length or conversion modifiers */ - } state = st_normal; - const char *sarg; /* %s string argument */ - char carg; /* %c char argument */ - int slen; /* String length */ - - while ((ch = *p++)) { - switch (state) { - case st_normal: - if (ch == '%') { - state = st_flags; - flags = 0; - rank = rank_int; - width = 0; - prec = -1; - } else { - EMIT(ch); - } - break; - - case st_flags: - switch (ch) { - case '-': - flags |= FL_MINUS; - break; - case '+': - flags |= FL_PLUS; - break; - case '\'': - flags |= FL_TICK; - break; - case ' ': - flags |= FL_SPACE; - break; - case '#': - flags |= FL_HASH; - break; - case '0': - flags |= FL_ZERO; - break; - default: - state = st_width; - p--; /* Process this character again */ - break; - } - break; - - case st_width: - if (ch >= '0' && ch <= '9') { - width = width * 10 + (ch - '0'); - } else if (ch == '*') { - width = va_arg(ap, int); - if (width < 0) { - width = -width; - flags |= FL_MINUS; - } - } else if (ch == '.') { - prec = 0; /* Precision given */ - state = st_prec; - } else { - state = st_modifiers; - p--; /* Process this character again */ - } - break; - - case st_prec: - if (ch >= '0' && ch <= '9') { - prec = prec * 10 + (ch - '0'); - } else if (ch == '*') { - prec = va_arg(ap, int); - if (prec < 0) - prec = -1; - } else { - state = st_modifiers; - p--; /* Process this character again */ - } - break; - - case st_modifiers: - switch (ch) { - /* Length modifiers - nonterminal sequences */ - case 'h': - rank--; /* Shorter rank */ - break; - case 'l': - rank++; /* Longer rank */ - break; - case 'j': - rank = INTMAX_RANK; - break; - case 'z': - rank = SIZE_T_RANK; - break; - case 't': - rank = PTRDIFF_T_RANK; - break; - case 'L': - case 'q': - rank += 2; - break; - default: - /* Output modifiers - terminal sequences */ - state = st_normal; /* Next state will be normal */ - if (rank < MIN_RANK) /* Canonicalize rank */ - rank = MIN_RANK; - else if (rank > MAX_RANK) - rank = MAX_RANK; - - switch (ch) { - case 'P': /* Upper case pointer */ - flags |= FL_UPPER; - /* fall through */ - case 'p': /* Pointer */ - base = 16; - prec = (CHAR_BIT * sizeof(void *) + 3) / 4; - flags |= FL_HASH; - val = (uintmax_t) (uintptr_t) va_arg(ap, void *); - goto is_integer; - - case 'd': /* Signed decimal output */ - case 'i': - base = 10; - flags |= FL_SIGNED; - switch (rank) { - case rank_char: - /* Yes, all these casts are needed... */ - val = - (uintmax_t) (intmax_t) (signed char)va_arg(ap, - signed - int); - break; - case rank_short: - val = - (uintmax_t) (intmax_t) (signed short)va_arg(ap, - signed - int); - break; - case rank_int: - val = (uintmax_t) (intmax_t) va_arg(ap, signed int); - break; - case rank_long: - val = (uintmax_t) (intmax_t) va_arg(ap, signed long); - break; - case rank_longlong: - val = - (uintmax_t) (intmax_t) va_arg(ap, signed long long); - break; - } - goto is_integer; - case 'o': /* Octal */ - base = 8; - goto is_unsigned; - case 'u': /* Unsigned decimal */ - base = 10; - goto is_unsigned; - case 'X': /* Upper case hexadecimal */ - flags |= FL_UPPER; - /* fall through */ - case 'x': /* Hexadecimal */ - base = 16; - goto is_unsigned; - -is_unsigned: - switch (rank) { - case rank_char: - val = - (uintmax_t) (unsigned char)va_arg(ap, unsigned int); - break; - case rank_short: - val = - (uintmax_t) (unsigned short)va_arg(ap, - unsigned int); - break; - case rank_int: - val = (uintmax_t) va_arg(ap, unsigned int); - break; - case rank_long: - val = (uintmax_t) va_arg(ap, unsigned long); - break; - case rank_longlong: - val = (uintmax_t) va_arg(ap, unsigned long long); - break; - } - /* fall through */ - -is_integer: - sz = format_int(q, (o < n) ? n - o : 0, val, flags, base, - width, prec); - q += sz; - o += sz; - break; - - case 'c': /* Character */ - carg = (char)va_arg(ap, int); - sarg = &carg; - slen = 1; - goto is_string; - case 's': /* String */ - sarg = va_arg(ap, const char *); - sarg = sarg ? sarg : "(null)"; - slen = strlen(sarg); - goto is_string; - -is_string: - { - char sch; - int i; - - if (prec != -1 && slen > prec) - slen = prec; - - if (width > slen && !(flags & FL_MINUS)) { - char pad = (flags & FL_ZERO) ? '0' : ' '; - while (width > slen) { - EMIT(pad); - width--; - } - } - for (i = slen; i; i--) { - sch = *sarg++; - EMIT(sch); - } - if (width > slen && (flags & FL_MINUS)) { - while (width > slen) { - EMIT(' '); - width--; - } - } - } - break; - - case 'n': /* Output the number of characters written */ - { - switch (rank) { - case rank_char: - *va_arg(ap, signed char *) = o; - break; - case rank_short: - *va_arg(ap, signed short *) = o; - break; - case rank_int: - *va_arg(ap, signed int *) = o; - break; - case rank_long: - *va_arg(ap, signed long *) = o; - break; - case rank_longlong: - *va_arg(ap, signed long long *) = o; - break; - } - } - break; - - default: /* Anything else, including % */ - EMIT(ch); - break; - } - } - } - } - - /* Null-terminate the string */ - if (o < n) - *q = '\0'; /* No overflow */ - else if (n > 0) - buffer[n - 1] = '\0'; /* Overflow - terminate at end of buffer */ - - return o; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vsprintf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vsprintf.c deleted file mode 100644 index 8df6213..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vsprintf.c +++ /dev/null @@ -1,11 +0,0 @@ -/* - * vsprintf.c - */ - -#include <stdio.h> -#include <unistd.h> - -int vsprintf(char *buffer, const char *format, va_list ap) -{ - return vsnprintf(buffer, ~(size_t) 0, format, ap); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/vsscanf.c b/contrib/syslinux/syslinux-4.03/com32/lib/vsscanf.c deleted file mode 100644 index 153dbbd..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/vsscanf.c +++ /dev/null @@ -1,374 +0,0 @@ -/* - * vsscanf.c - * - * vsscanf(), from which the rest of the scanf() - * family is built - */ - -#include <ctype.h> -#include <stdarg.h> -#include <stddef.h> -#include <inttypes.h> -#include <string.h> -#include <limits.h> -#include <stdio.h> - -#ifndef LONG_BIT -#define LONG_BIT (CHAR_BIT*sizeof(long)) -#endif - -enum flags { - FL_SPLAT = 0x01, /* Drop the value, do not assign */ - FL_INV = 0x02, /* Character-set with inverse */ - FL_WIDTH = 0x04, /* Field width specified */ - FL_MINUS = 0x08, /* Negative number */ -}; - -enum ranks { - rank_char = -2, - rank_short = -1, - rank_int = 0, - rank_long = 1, - rank_longlong = 2, - rank_ptr = INT_MAX /* Special value used for pointers */ -}; - -#define MIN_RANK rank_char -#define MAX_RANK rank_longlong - -#define INTMAX_RANK rank_longlong -#define SIZE_T_RANK rank_long -#define PTRDIFF_T_RANK rank_long - -enum bail { - bail_none = 0, /* No error condition */ - bail_eof, /* Hit EOF */ - bail_err /* Conversion mismatch */ -}; - -static inline const char *skipspace(const char *p) -{ - while (isspace((unsigned char)*p)) - p++; - return p; -} - -#undef set_bit -static inline void set_bit(unsigned long *bitmap, unsigned int bit) -{ - bitmap[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT); -} - -#undef test_bit -static inline int test_bit(unsigned long *bitmap, unsigned int bit) -{ - return (int)(bitmap[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1; -} - -int vsscanf(const char *buffer, const char *format, va_list ap) -{ - const char *p = format; - char ch; - const char *q = buffer; - const char *qq; - uintmax_t val = 0; - int rank = rank_int; /* Default rank */ - unsigned int width = UINT_MAX; - int base; - enum flags flags = 0; - enum { - st_normal, /* Ground state */ - st_flags, /* Special flags */ - st_width, /* Field width */ - st_modifiers, /* Length or conversion modifiers */ - st_match_init, /* Initial state of %[ sequence */ - st_match, /* Main state of %[ sequence */ - st_match_range, /* After - in a %[ sequence */ - } state = st_normal; - char *sarg = NULL; /* %s %c or %[ string argument */ - enum bail bail = bail_none; - int sign; - int converted = 0; /* Successful conversions */ - unsigned long matchmap[((1 << CHAR_BIT) + (LONG_BIT - 1)) / LONG_BIT]; - int matchinv = 0; /* Is match map inverted? */ - unsigned char range_start = 0; - - while ((ch = *p++) && !bail) { - switch (state) { - case st_normal: - if (ch == '%') { - state = st_flags; - flags = 0; - rank = rank_int; - width = UINT_MAX; - } else if (isspace((unsigned char)ch)) { - q = skipspace(q); - } else { - if (*q == ch) - q++; - else - bail = bail_err; /* Match failure */ - } - break; - - case st_flags: - switch (ch) { - case '*': - flags |= FL_SPLAT; - break; - case '0' ... '9': - width = (ch - '0'); - state = st_width; - flags |= FL_WIDTH; - break; - default: - state = st_modifiers; - p--; /* Process this character again */ - break; - } - break; - - case st_width: - if (ch >= '0' && ch <= '9') { - width = width * 10 + (ch - '0'); - } else { - state = st_modifiers; - p--; /* Process this character again */ - } - break; - - case st_modifiers: - switch (ch) { - /* Length modifiers - nonterminal sequences */ - case 'h': - rank--; /* Shorter rank */ - break; - case 'l': - rank++; /* Longer rank */ - break; - case 'j': - rank = INTMAX_RANK; - break; - case 'z': - rank = SIZE_T_RANK; - break; - case 't': - rank = PTRDIFF_T_RANK; - break; - case 'L': - case 'q': - rank = rank_longlong; /* long double/long long */ - break; - - default: - /* Output modifiers - terminal sequences */ - state = st_normal; /* Next state will be normal */ - if (rank < MIN_RANK) /* Canonicalize rank */ - rank = MIN_RANK; - else if (rank > MAX_RANK) - rank = MAX_RANK; - - switch (ch) { - case 'P': /* Upper case pointer */ - case 'p': /* Pointer */ -#if 0 /* Enable this to allow null pointers by name */ - q = skipspace(q); - if (!isdigit((unsigned char)*q)) { - static const char *const nullnames[] = - { "null", "nul", "nil", "(null)", "(nul)", "(nil)", -0 }; - const char *const *np; - - /* Check to see if it's a null pointer by name */ - for (np = nullnames; *np; np++) { - if (!strncasecmp(q, *np, strlen(*np))) { - val = (uintmax_t) ((void *)NULL); - goto set_integer; - } - } - /* Failure */ - bail = bail_err; - break; - } - /* else */ -#endif - rank = rank_ptr; - base = 0; - sign = 0; - goto scan_int; - - case 'i': /* Base-independent integer */ - base = 0; - sign = 1; - goto scan_int; - - case 'd': /* Decimal integer */ - base = 10; - sign = 1; - goto scan_int; - - case 'o': /* Octal integer */ - base = 8; - sign = 0; - goto scan_int; - - case 'u': /* Unsigned decimal integer */ - base = 10; - sign = 0; - goto scan_int; - - case 'x': /* Hexadecimal integer */ - case 'X': - base = 16; - sign = 0; - goto scan_int; - - case 'n': /* Number of characters consumed */ - val = (q - buffer); - goto set_integer; - -scan_int: - q = skipspace(q); - if (!*q) { - bail = bail_eof; - break; - } - val = strntoumax(q, (char **)&qq, base, width); - if (qq == q) { - bail = bail_err; - break; - } - q = qq; - converted++; - /* fall through */ - -set_integer: - if (!(flags & FL_SPLAT)) { - switch (rank) { - case rank_char: - *va_arg(ap, unsigned char *) = (unsigned char)val; - break; - case rank_short: - *va_arg(ap, unsigned short *) = (unsigned short)val; - break; - case rank_int: - *va_arg(ap, unsigned int *) = (unsigned int)val; - break; - case rank_long: - *va_arg(ap, unsigned long *) = (unsigned long)val; - break; - case rank_longlong: - *va_arg(ap, unsigned long long *) = - (unsigned long long)val; - break; - case rank_ptr: - *va_arg(ap, void **) = (void *)(uintptr_t) val; - break; - } - } - break; - - case 'c': /* Character */ - width = (flags & FL_WIDTH) ? width : 1; /* Default width == 1 */ - sarg = va_arg(ap, char *); - while (width--) { - if (!*q) { - bail = bail_eof; - break; - } - *sarg++ = *q++; - } - if (!bail) - converted++; - break; - - case 's': /* String */ - { - char *sp; - sp = sarg = va_arg(ap, char *); - while (width-- && *q && !isspace((unsigned char)*q)) { - *sp++ = *q++; - } - if (sarg != sp) { - *sp = '\0'; /* Terminate output */ - converted++; - } else { - bail = bail_eof; - } - } - break; - - case '[': /* Character range */ - sarg = va_arg(ap, char *); - state = st_match_init; - matchinv = 0; - memset(matchmap, 0, sizeof matchmap); - break; - - case '%': /* %% sequence */ - if (*q == '%') - q++; - else - bail = bail_err; - break; - - default: /* Anything else */ - bail = bail_err; /* Unknown sequence */ - break; - } - } - break; - - case st_match_init: /* Initial state for %[ match */ - if (ch == '^' && !(flags & FL_INV)) { - matchinv = 1; - } else { - set_bit(matchmap, (unsigned char)ch); - state = st_match; - } - break; - - case st_match: /* Main state for %[ match */ - if (ch == ']') { - goto match_run; - } else if (ch == '-') { - range_start = (unsigned char)ch; - state = st_match_range; - } else { - set_bit(matchmap, (unsigned char)ch); - } - break; - - case st_match_range: /* %[ match after - */ - if (ch == ']') { - set_bit(matchmap, (unsigned char)'-'); /* - was last character */ - goto match_run; - } else { - int i; - for (i = range_start; i < (unsigned char)ch; i++) - set_bit(matchmap, i); - state = st_match; - } - break; - -match_run: /* Match expression finished */ - qq = q; - while (width && *q - && test_bit(matchmap, (unsigned char)*q) ^ matchinv) { - *sarg++ = *q++; - } - if (q != qq) { - *sarg = '\0'; - converted++; - } else { - bail = *q ? bail_err : bail_eof; - } - break; - } - } - - if (bail == bail_eof && !converted) - converted = -1; /* Return EOF (-1) */ - - return converted; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zalloc.c b/contrib/syslinux/syslinux-4.03/com32/lib/zalloc.c deleted file mode 100644 index 0e6ed28..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zalloc.c +++ /dev/null @@ -1,17 +0,0 @@ -/* - * zalloc.c - */ - -#include <stdlib.h> -#include <string.h> - -void *zalloc(size_t size) -{ - void *ptr; - - ptr = malloc(size); - if (ptr) - memset(ptr, 0, size); - - return ptr; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/FAQ b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/FAQ deleted file mode 100644 index 1a22750..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/FAQ +++ /dev/null @@ -1,366 +0,0 @@ - - Frequently Asked Questions about zlib - - -If your question is not there, please check the zlib home page -http://zlib.net/ which may have more recent information. -The lastest zlib FAQ is at http://zlib.net/zlib_faq.html - - - 1. Is zlib Y2K-compliant? - - Yes. zlib doesn't handle dates. - - 2. Where can I get a Windows DLL version? - - The zlib sources can be compiled without change to produce a DLL. See the - file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the - precompiled DLL are found in the zlib web site at http://zlib.net/ . - - 3. Where can I get a Visual Basic interface to zlib? - - See - * http://marknelson.us/1997/01/01/zlib-engine/ - * win32/DLL_FAQ.txt in the zlib distribution - - 4. compress() returns Z_BUF_ERROR. - - Make sure that before the call of compress(), the length of the compressed - buffer is equal to the available size of the compressed buffer and not - zero. For Visual Basic, check that this parameter is passed by reference - ("as any"), not by value ("as long"). - - 5. deflate() or inflate() returns Z_BUF_ERROR. - - Before making the call, make sure that avail_in and avail_out are not zero. - When setting the parameter flush equal to Z_FINISH, also make sure that - avail_out is big enough to allow processing all pending input. Note that a - Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be - made with more input or output space. A Z_BUF_ERROR may in fact be - unavoidable depending on how the functions are used, since it is not - possible to tell whether or not there is more output pending when - strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a - heavily annotated example. - - 6. Where's the zlib documentation (man pages, etc.)? - - It's in zlib.h . Examples of zlib usage are in the files example.c and - minigzip.c, with more in examples/ . - - 7. Why don't you use GNU autoconf or libtool or ...? - - Because we would like to keep zlib as a very small and simple package. - zlib is rather portable and doesn't need much configuration. - - 8. I found a bug in zlib. - - Most of the time, such problems are due to an incorrect usage of zlib. - Please try to reproduce the problem with a small program and send the - corresponding source to us at zlib@gzip.org . Do not send multi-megabyte - data files without prior agreement. - - 9. Why do I get "undefined reference to gzputc"? - - If "make test" produces something like - - example.o(.text+0x154): undefined reference to `gzputc' - - check that you don't have old files libz.* in /usr/lib, /usr/local/lib or - /usr/X11R6/lib. Remove any old versions, then do "make install". - -10. I need a Delphi interface to zlib. - - See the contrib/delphi directory in the zlib distribution. - -11. Can zlib handle .zip archives? - - Not by itself, no. See the directory contrib/minizip in the zlib - distribution. - -12. Can zlib handle .Z files? - - No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt - the code of uncompress on your own. - -13. How can I make a Unix shared library? - - make clean - ./configure -s - make - -14. How do I install a shared zlib library on Unix? - - After the above, then: - - make install - - However, many flavors of Unix come with a shared zlib already installed. - Before going to the trouble of compiling a shared version of zlib and - trying to install it, you may want to check if it's already there! If you - can #include <zlib.h>, it's there. The -lz option will probably link to - it. You can check the version at the top of zlib.h or with the - ZLIB_VERSION symbol defined in zlib.h . - -15. I have a question about OttoPDF. - - We are not the authors of OttoPDF. The real author is on the OttoPDF web - site: Joel Hainley, jhainley@myndkryme.com. - -16. Can zlib decode Flate data in an Adobe PDF file? - - Yes. See http://www.pdflib.com/ . To modify PDF forms, see - http://sourceforge.net/projects/acroformtool/ . - -17. Why am I getting this "register_frame_info not found" error on Solaris? - - After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib - generates an error such as: - - ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so: - symbol __register_frame_info: referenced symbol not found - - The symbol __register_frame_info is not part of zlib, it is generated by - the C compiler (cc or gcc). You must recompile applications using zlib - which have this problem. This problem is specific to Solaris. See - http://www.sunfreeware.com for Solaris versions of zlib and applications - using zlib. - -18. Why does gzip give an error on a file I make with compress/deflate? - - The compress and deflate functions produce data in the zlib format, which - is different and incompatible with the gzip format. The gz* functions in - zlib on the other hand use the gzip format. Both the zlib and gzip formats - use the same compressed data format internally, but have different headers - and trailers around the compressed data. - -19. Ok, so why are there two different formats? - - The gzip format was designed to retain the directory information about a - single file, such as the name and last modification date. The zlib format - on the other hand was designed for in-memory and communication channel - applications, and has a much more compact header and trailer and uses a - faster integrity check than gzip. - -20. Well that's nice, but how do I make a gzip file in memory? - - You can request that deflate write the gzip format instead of the zlib - format using deflateInit2(). You can also request that inflate decode the - gzip format using inflateInit2(). Read zlib.h for more details. - -21. Is zlib thread-safe? - - Yes. However any library routines that zlib uses and any application- - provided memory allocation routines must also be thread-safe. zlib's gz* - functions use stdio library routines, and most of zlib's functions use the - library memory allocation routines by default. zlib's *Init* functions - allow for the application to provide custom memory allocation routines. - - Of course, you should only operate on any given zlib or gzip stream from a - single thread at a time. - -22. Can I use zlib in my commercial application? - - Yes. Please read the license in zlib.h. - -23. Is zlib under the GNU license? - - No. Please read the license in zlib.h. - -24. The license says that altered source versions must be "plainly marked". So - what exactly do I need to do to meet that requirement? - - You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In - particular, the final version number needs to be changed to "f", and an - identification string should be appended to ZLIB_VERSION. Version numbers - x.x.x.f are reserved for modifications to zlib by others than the zlib - maintainers. For example, if the version of the base zlib you are altering - is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and - ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also - update the version strings in deflate.c and inftrees.c. - - For altered source distributions, you should also note the origin and - nature of the changes in zlib.h, as well as in ChangeLog and README, along - with the dates of the alterations. The origin should include at least your - name (or your company's name), and an email address to contact for help or - issues with the library. - - Note that distributing a compiled zlib library along with zlib.h and - zconf.h is also a source distribution, and so you should change - ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes - in zlib.h as you would for a full source distribution. - -25. Will zlib work on a big-endian or little-endian architecture, and can I - exchange compressed data between them? - - Yes and yes. - -26. Will zlib work on a 64-bit machine? - - Yes. It has been tested on 64-bit machines, and has no dependence on any - data types being limited to 32-bits in length. If you have any - difficulties, please provide a complete problem report to zlib@gzip.org - -27. Will zlib decompress data from the PKWare Data Compression Library? - - No. The PKWare DCL uses a completely different compressed data format than - does PKZIP and zlib. However, you can look in zlib's contrib/blast - directory for a possible solution to your problem. - -28. Can I access data randomly in a compressed stream? - - No, not without some preparation. If when compressing you periodically use - Z_FULL_FLUSH, carefully write all the pending data at those points, and - keep an index of those locations, then you can start decompression at those - points. You have to be careful to not use Z_FULL_FLUSH too often, since it - can significantly degrade compression. Alternatively, you can scan a - deflate stream once to generate an index, and then use that index for - random access. See examples/zran.c . - -29. Does zlib work on MVS, OS/390, CICS, etc.? - - It has in the past, but we have not heard of any recent evidence. There - were working ports of zlib 1.1.4 to MVS, but those links no longer work. - If you know of recent, successful applications of zlib on these operating - systems, please let us know. Thanks. - -30. Is there some simpler, easier to read version of inflate I can look at to - understand the deflate format? - - First off, you should read RFC 1951. Second, yes. Look in zlib's - contrib/puff directory. - -31. Does zlib infringe on any patents? - - As far as we know, no. In fact, that was originally the whole point behind - zlib. Look here for some more information: - - http://www.gzip.org/#faq11 - -32. Can zlib work with greater than 4 GB of data? - - Yes. inflate() and deflate() will process any amount of data correctly. - Each call of inflate() or deflate() is limited to input and output chunks - of the maximum value that can be stored in the compiler's "unsigned int" - type, but there is no limit to the number of chunks. Note however that the - strm.total_in and strm_total_out counters may be limited to 4 GB. These - counters are provided as a convenience and are not used internally by - inflate() or deflate(). The application can easily set up its own counters - updated after each call of inflate() or deflate() to count beyond 4 GB. - compress() and uncompress() may be limited to 4 GB, since they operate in a - single call. gzseek() and gztell() may be limited to 4 GB depending on how - zlib is compiled. See the zlibCompileFlags() function in zlib.h. - - The word "may" appears several times above since there is a 4 GB limit only - if the compiler's "long" type is 32 bits. If the compiler's "long" type is - 64 bits, then the limit is 16 exabytes. - -33. Does zlib have any security vulnerabilities? - - The only one that we are aware of is potentially in gzprintf(). If zlib is - compiled to use sprintf() or vsprintf(), then there is no protection - against a buffer overflow of an 8K string space (or other value as set by - gzbuffer()), other than the caller of gzprintf() assuring that the output - will not exceed 8K. On the other hand, if zlib is compiled to use - snprintf() or vsnprintf(), which should normally be the case, then there is - no vulnerability. The ./configure script will display warnings if an - insecure variation of sprintf() will be used by gzprintf(). Also the - zlibCompileFlags() function will return information on what variant of - sprintf() is used by gzprintf(). - - If you don't have snprintf() or vsnprintf() and would like one, you can - find a portable implementation here: - - http://www.ijs.si/software/snprintf/ - - Note that you should be using the most recent version of zlib. Versions - 1.1.3 and before were subject to a double-free vulnerability, and versions - 1.2.1 and 1.2.2 were subject to an access exception when decompressing - invalid compressed data. - -34. Is there a Java version of zlib? - - Probably what you want is to use zlib in Java. zlib is already included - as part of the Java SDK in the java.util.zip package. If you really want - a version of zlib written in the Java language, look on the zlib home - page for links: http://zlib.net/ . - -35. I get this or that compiler or source-code scanner warning when I crank it - up to maximally-pedantic. Can't you guys write proper code? - - Many years ago, we gave up attempting to avoid warnings on every compiler - in the universe. It just got to be a waste of time, and some compilers - were downright silly as well as contradicted each other. So now, we simply - make sure that the code always works. - -36. Valgrind (or some similar memory access checker) says that deflate is - performing a conditional jump that depends on an uninitialized value. - Isn't that a bug? - - No. That is intentional for performance reasons, and the output of deflate - is not affected. This only started showing up recently since zlib 1.2.x - uses malloc() by default for allocations, whereas earlier versions used - calloc(), which zeros out the allocated memory. Even though the code was - correct, versions 1.2.4 and later was changed to not stimulate these - checkers. - -37. Will zlib read the (insert any ancient or arcane format here) compressed - data format? - - Probably not. Look in the comp.compression FAQ for pointers to various - formats and associated software. - -38. How can I encrypt/decrypt zip files with zlib? - - zlib doesn't support encryption. The original PKZIP encryption is very - weak and can be broken with freely available programs. To get strong - encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib - compression. For PKZIP compatible "encryption", look at - http://www.info-zip.org/ - -39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings? - - "gzip" is the gzip format, and "deflate" is the zlib format. They should - probably have called the second one "zlib" instead to avoid confusion with - the raw deflate compressed data format. While the HTTP 1.1 RFC 2616 - correctly points to the zlib specification in RFC 1950 for the "deflate" - transfer encoding, there have been reports of servers and browsers that - incorrectly produce or expect raw deflate data per the deflate - specficiation in RFC 1951, most notably Microsoft. So even though the - "deflate" transfer encoding using the zlib format would be the more - efficient approach (and in fact exactly what the zlib format was designed - for), using the "gzip" transfer encoding is probably more reliable due to - an unfortunate choice of name on the part of the HTTP 1.1 authors. - - Bottom line: use the gzip format for HTTP 1.1 encoding. - -40. Does zlib support the new "Deflate64" format introduced by PKWare? - - No. PKWare has apparently decided to keep that format proprietary, since - they have not documented it as they have previous compression formats. In - any case, the compression improvements are so modest compared to other more - modern approaches, that it's not worth the effort to implement. - -41. I'm having a problem with the zip functions in zlib, can you help? - - There are no zip functions in zlib. You are probably using minizip by - Giles Vollant, which is found in the contrib directory of zlib. It is not - part of zlib. In fact none of the stuff in contrib is part of zlib. The - files in there are not supported by the zlib authors. You need to contact - the authors of the respective contribution for help. - -42. The match.asm code in contrib is under the GNU General Public License. - Since it's part of zlib, doesn't that mean that all of zlib falls under the - GNU GPL? - - No. The files in contrib are not part of zlib. They were contributed by - other authors and are provided as a convenience to the user within the zlib - distribution. Each item in contrib has its own license. - -43. Is zlib subject to export controls? What is its ECCN? - - zlib is not subject to export controls, and so is classified as EAR99. - -44. Can you please sign these lengthy legal documents and fax them back to us - so that we can use your software in our product? - - No. Go away. Shoo. diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/README b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/README deleted file mode 100644 index d4219bf..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/README +++ /dev/null @@ -1,115 +0,0 @@ -ZLIB DATA COMPRESSION LIBRARY - -zlib 1.2.5 is a general purpose data compression library. All the code is -thread safe. The data format used by the zlib library is described by RFCs -(Request for Comments) 1950 to 1952 in the files -http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) -and rfc1952.txt (gzip format). - -All functions of the compression library are documented in the file zlib.h -(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example -of the library is given in the file example.c which also tests that the library -is working correctly. Another example is given in the file minigzip.c. The -compression library itself is composed of all source files except example.c and -minigzip.c. - -To compile all files and run the test program, follow the instructions given at -the top of Makefile.in. In short "./configure; make test", and if that goes -well, "make install" should work for most flavors of Unix. For Windows, use one -of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use -make_vms.com. - -Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant -<info@winimage.com> for the Windows DLL version. The zlib home page is -http://zlib.net/ . Before reporting a problem, please check this site to -verify that you have the latest version of zlib; otherwise get the latest -version and check whether the problem still exists or not. - -PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. - -Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997 -issue of Dr. Dobb's Journal; a copy of the article is available at -http://marknelson.us/1997/01/01/zlib-engine/ . - -The changes made in version 1.2.5 are documented in the file ChangeLog. - -Unsupported third party contributions are provided in directory contrib/ . - -zlib is available in Java using the java.util.zip package, documented at -http://java.sun.com/developer/technicalArticles/Programming/compression/ . - -A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available -at CPAN (Comprehensive Perl Archive Network) sites, including -http://search.cpan.org/~pmqs/IO-Compress-Zlib/ . - -A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is -available in Python 1.5 and later versions, see -http://www.python.org/doc/lib/module-zlib.html . - -zlib is built into tcl: http://wiki.tcl.tk/4610 . - -An experimental package to read and write files in .zip format, written on top -of zlib by Gilles Vollant <info@winimage.com>, is available in the -contrib/minizip directory of zlib. - - -Notes for some targets: - -- For Windows DLL versions, please see win32/DLL_FAQ.txt - -- For 64-bit Irix, deflate.c must be compiled without any optimization. With - -O, one libpng test fails. The test works in 32 bit mode (with the -n32 - compiler flag). The compiler bug has been reported to SGI. - -- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works - when compiled with cc. - -- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is - necessary to get gzprintf working correctly. This is done by configure. - -- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with - other compilers. Use "make test" to check your compiler. - -- gzdopen is not supported on RISCOS or BEOS. - -- For PalmOs, see http://palmzlib.sourceforge.net/ - - -Acknowledgments: - - The deflate format used by zlib was defined by Phil Katz. The deflate and - zlib specifications were written by L. Peter Deutsch. Thanks to all the - people who reported problems and suggested various improvements in zlib; they - are too numerous to cite here. - -Copyright notice: - - (C) 1995-2010 Jean-loup Gailly and Mark Adler - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. - - Jean-loup Gailly Mark Adler - jloup@gzip.org madler@alumni.caltech.edu - -If you use the zlib library in a product, we would appreciate *not* receiving -lengthy legal documents to sign. The sources are provided for free but without -warranty of any kind. The library has been entirely written by Jean-loup -Gailly and Mark Adler; it does not include third-party code. - -If you redistribute modified sources, we would appreciate that you include in -the file ChangeLog history information documenting your changes. Please read -the FAQ for more information on the distribution of modified source versions. diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/adler32.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/adler32.c deleted file mode 100644 index 65ad6a5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/adler32.c +++ /dev/null @@ -1,169 +0,0 @@ -/* adler32.c -- compute the Adler-32 checksum of a data stream - * Copyright (C) 1995-2007 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zutil.h" - -#define local static - -local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2); - -#define BASE 65521UL /* largest prime smaller than 65536 */ -#define NMAX 5552 -/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ - -#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;} -#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1); -#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2); -#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4); -#define DO16(buf) DO8(buf,0); DO8(buf,8); - -/* use NO_DIVIDE if your processor does not do division in hardware */ -#ifdef NO_DIVIDE -# define MOD(a) \ - do { \ - if (a >= (BASE << 16)) a -= (BASE << 16); \ - if (a >= (BASE << 15)) a -= (BASE << 15); \ - if (a >= (BASE << 14)) a -= (BASE << 14); \ - if (a >= (BASE << 13)) a -= (BASE << 13); \ - if (a >= (BASE << 12)) a -= (BASE << 12); \ - if (a >= (BASE << 11)) a -= (BASE << 11); \ - if (a >= (BASE << 10)) a -= (BASE << 10); \ - if (a >= (BASE << 9)) a -= (BASE << 9); \ - if (a >= (BASE << 8)) a -= (BASE << 8); \ - if (a >= (BASE << 7)) a -= (BASE << 7); \ - if (a >= (BASE << 6)) a -= (BASE << 6); \ - if (a >= (BASE << 5)) a -= (BASE << 5); \ - if (a >= (BASE << 4)) a -= (BASE << 4); \ - if (a >= (BASE << 3)) a -= (BASE << 3); \ - if (a >= (BASE << 2)) a -= (BASE << 2); \ - if (a >= (BASE << 1)) a -= (BASE << 1); \ - if (a >= BASE) a -= BASE; \ - } while (0) -# define MOD4(a) \ - do { \ - if (a >= (BASE << 4)) a -= (BASE << 4); \ - if (a >= (BASE << 3)) a -= (BASE << 3); \ - if (a >= (BASE << 2)) a -= (BASE << 2); \ - if (a >= (BASE << 1)) a -= (BASE << 1); \ - if (a >= BASE) a -= BASE; \ - } while (0) -#else -# define MOD(a) a %= BASE -# define MOD4(a) a %= BASE -#endif - -/* ========================================================================= */ -uLong ZEXPORT adler32(adler, buf, len) - uLong adler; - const Bytef *buf; - uInt len; -{ - unsigned long sum2; - unsigned n; - - /* split Adler-32 into component sums */ - sum2 = (adler >> 16) & 0xffff; - adler &= 0xffff; - - /* in case user likes doing a byte at a time, keep it fast */ - if (len == 1) { - adler += buf[0]; - if (adler >= BASE) - adler -= BASE; - sum2 += adler; - if (sum2 >= BASE) - sum2 -= BASE; - return adler | (sum2 << 16); - } - - /* initial Adler-32 value (deferred check for len == 1 speed) */ - if (buf == Z_NULL) - return 1L; - - /* in case short lengths are provided, keep it somewhat fast */ - if (len < 16) { - while (len--) { - adler += *buf++; - sum2 += adler; - } - if (adler >= BASE) - adler -= BASE; - MOD4(sum2); /* only added so many BASE's */ - return adler | (sum2 << 16); - } - - /* do length NMAX blocks -- requires just one modulo operation */ - while (len >= NMAX) { - len -= NMAX; - n = NMAX / 16; /* NMAX is divisible by 16 */ - do { - DO16(buf); /* 16 sums unrolled */ - buf += 16; - } while (--n); - MOD(adler); - MOD(sum2); - } - - /* do remaining bytes (less than NMAX, still just one modulo) */ - if (len) { /* avoid modulos if none remaining */ - while (len >= 16) { - len -= 16; - DO16(buf); - buf += 16; - } - while (len--) { - adler += *buf++; - sum2 += adler; - } - MOD(adler); - MOD(sum2); - } - - /* return recombined sums */ - return adler | (sum2 << 16); -} - -/* ========================================================================= */ -local uLong adler32_combine_(adler1, adler2, len2) - uLong adler1; - uLong adler2; - z_off64_t len2; -{ - unsigned long sum1; - unsigned long sum2; - unsigned rem; - - /* the derivation of this formula is left as an exercise for the reader */ - rem = (unsigned)(len2 % BASE); - sum1 = adler1 & 0xffff; - sum2 = rem * sum1; - MOD(sum2); - sum1 += (adler2 & 0xffff) + BASE - 1; - sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem; - if (sum1 >= BASE) sum1 -= BASE; - if (sum1 >= BASE) sum1 -= BASE; - if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1); - if (sum2 >= BASE) sum2 -= BASE; - return sum1 | (sum2 << 16); -} - -/* ========================================================================= */ -uLong ZEXPORT adler32_combine(adler1, adler2, len2) - uLong adler1; - uLong adler2; - z_off_t len2; -{ - return adler32_combine_(adler1, adler2, len2); -} - -uLong ZEXPORT adler32_combine64(adler1, adler2, len2) - uLong adler1; - uLong adler2; - z_off64_t len2; -{ - return adler32_combine_(adler1, adler2, len2); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/algorithm.txt b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/algorithm.txt deleted file mode 100644 index b022dde..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/algorithm.txt +++ /dev/null @@ -1,209 +0,0 @@ -1. Compression algorithm (deflate) - -The deflation algorithm used by gzip (also zip and zlib) is a variation of -LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in -the input data. The second occurrence of a string is replaced by a -pointer to the previous string, in the form of a pair (distance, -length). Distances are limited to 32K bytes, and lengths are limited -to 258 bytes. When a string does not occur anywhere in the previous -32K bytes, it is emitted as a sequence of literal bytes. (In this -description, `string' must be taken as an arbitrary sequence of bytes, -and is not restricted to printable characters.) - -Literals or match lengths are compressed with one Huffman tree, and -match distances are compressed with another tree. The trees are stored -in a compact form at the start of each block. The blocks can have any -size (except that the compressed data for one block must fit in -available memory). A block is terminated when deflate() determines that -it would be useful to start another block with fresh trees. (This is -somewhat similar to the behavior of LZW-based _compress_.) - -Duplicated strings are found using a hash table. All input strings of -length 3 are inserted in the hash table. A hash index is computed for -the next 3 bytes. If the hash chain for this index is not empty, all -strings in the chain are compared with the current input string, and -the longest match is selected. - -The hash chains are searched starting with the most recent strings, to -favor small distances and thus take advantage of the Huffman encoding. -The hash chains are singly linked. There are no deletions from the -hash chains, the algorithm simply discards matches that are too old. - -To avoid a worst-case situation, very long hash chains are arbitrarily -truncated at a certain length, determined by a runtime option (level -parameter of deflateInit). So deflate() does not always find the longest -possible match but generally finds a match which is long enough. - -deflate() also defers the selection of matches with a lazy evaluation -mechanism. After a match of length N has been found, deflate() searches for -a longer match at the next input byte. If a longer match is found, the -previous match is truncated to a length of one (thus producing a single -literal byte) and the process of lazy evaluation begins again. Otherwise, -the original match is kept, and the next match search is attempted only N -steps later. - -The lazy match evaluation is also subject to a runtime parameter. If -the current match is long enough, deflate() reduces the search for a longer -match, thus speeding up the whole process. If compression ratio is more -important than speed, deflate() attempts a complete second search even if -the first match is already long enough. - -The lazy match evaluation is not performed for the fastest compression -modes (level parameter 1 to 3). For these fast modes, new strings -are inserted in the hash table only when no match was found, or -when the match is not too long. This degrades the compression ratio -but saves time since there are both fewer insertions and fewer searches. - - -2. Decompression algorithm (inflate) - -2.1 Introduction - -The key question is how to represent a Huffman code (or any prefix code) so -that you can decode fast. The most important characteristic is that shorter -codes are much more common than longer codes, so pay attention to decoding the -short codes fast, and let the long codes take longer to decode. - -inflate() sets up a first level table that covers some number of bits of -input less than the length of longest code. It gets that many bits from the -stream, and looks it up in the table. The table will tell if the next -code is that many bits or less and how many, and if it is, it will tell -the value, else it will point to the next level table for which inflate() -grabs more bits and tries to decode a longer code. - -How many bits to make the first lookup is a tradeoff between the time it -takes to decode and the time it takes to build the table. If building the -table took no time (and if you had infinite memory), then there would only -be a first level table to cover all the way to the longest code. However, -building the table ends up taking a lot longer for more bits since short -codes are replicated many times in such a table. What inflate() does is -simply to make the number of bits in the first table a variable, and then -to set that variable for the maximum speed. - -For inflate, which has 286 possible codes for the literal/length tree, the size -of the first table is nine bits. Also the distance trees have 30 possible -values, and the size of the first table is six bits. Note that for each of -those cases, the table ended up one bit longer than the ``average'' code -length, i.e. the code length of an approximately flat code which would be a -little more than eight bits for 286 symbols and a little less than five bits -for 30 symbols. - - -2.2 More details on the inflate table lookup - -Ok, you want to know what this cleverly obfuscated inflate tree actually -looks like. You are correct that it's not a Huffman tree. It is simply a -lookup table for the first, let's say, nine bits of a Huffman symbol. The -symbol could be as short as one bit or as long as 15 bits. If a particular -symbol is shorter than nine bits, then that symbol's translation is duplicated -in all those entries that start with that symbol's bits. For example, if the -symbol is four bits, then it's duplicated 32 times in a nine-bit table. If a -symbol is nine bits long, it appears in the table once. - -If the symbol is longer than nine bits, then that entry in the table points -to another similar table for the remaining bits. Again, there are duplicated -entries as needed. The idea is that most of the time the symbol will be short -and there will only be one table look up. (That's whole idea behind data -compression in the first place.) For the less frequent long symbols, there -will be two lookups. If you had a compression method with really long -symbols, you could have as many levels of lookups as is efficient. For -inflate, two is enough. - -So a table entry either points to another table (in which case nine bits in -the above example are gobbled), or it contains the translation for the symbol -and the number of bits to gobble. Then you start again with the next -ungobbled bit. - -You may wonder: why not just have one lookup table for how ever many bits the -longest symbol is? The reason is that if you do that, you end up spending -more time filling in duplicate symbol entries than you do actually decoding. -At least for deflate's output that generates new trees every several 10's of -kbytes. You can imagine that filling in a 2^15 entry table for a 15-bit code -would take too long if you're only decoding several thousand symbols. At the -other extreme, you could make a new table for every bit in the code. In fact, -that's essentially a Huffman tree. But then you spend two much time -traversing the tree while decoding, even for short symbols. - -So the number of bits for the first lookup table is a trade of the time to -fill out the table vs. the time spent looking at the second level and above of -the table. - -Here is an example, scaled down: - -The code being decoded, with 10 symbols, from 1 to 6 bits long: - -A: 0 -B: 10 -C: 1100 -D: 11010 -E: 11011 -F: 11100 -G: 11101 -H: 11110 -I: 111110 -J: 111111 - -Let's make the first table three bits long (eight entries): - -000: A,1 -001: A,1 -010: A,1 -011: A,1 -100: B,2 -101: B,2 -110: -> table X (gobble 3 bits) -111: -> table Y (gobble 3 bits) - -Each entry is what the bits decode as and how many bits that is, i.e. how -many bits to gobble. Or the entry points to another table, with the number of -bits to gobble implicit in the size of the table. - -Table X is two bits long since the longest code starting with 110 is five bits -long: - -00: C,1 -01: C,1 -10: D,2 -11: E,2 - -Table Y is three bits long since the longest code starting with 111 is six -bits long: - -000: F,2 -001: F,2 -010: G,2 -011: G,2 -100: H,2 -101: H,2 -110: I,3 -111: J,3 - -So what we have here are three tables with a total of 20 entries that had to -be constructed. That's compared to 64 entries for a single table. Or -compared to 16 entries for a Huffman tree (six two entry tables and one four -entry table). Assuming that the code ideally represents the probability of -the symbols, it takes on the average 1.25 lookups per symbol. That's compared -to one lookup for the single table, or 1.66 lookups per symbol for the -Huffman tree. - -There, I think that gives you a picture of what's going on. For inflate, the -meaning of a particular symbol is often more than just a letter. It can be a -byte (a "literal"), or it can be either a length or a distance which -indicates a base value and a number of bits to fetch after the code that is -added to the base value. Or it might be the special end-of-block code. The -data structures created in inftrees.c try to encode all that information -compactly in the tables. - - -Jean-loup Gailly Mark Adler -jloup@gzip.org madler@alumni.caltech.edu - - -References: - -[LZ77] Ziv J., Lempel A., ``A Universal Algorithm for Sequential Data -Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3, -pp. 337-343. - -``DEFLATE Compressed Data Format Specification'' available in -http://www.ietf.org/rfc/rfc1951.txt diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/compress.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/compress.c deleted file mode 100644 index ea4dfbe..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/compress.c +++ /dev/null @@ -1,80 +0,0 @@ -/* compress.c -- compress a memory buffer - * Copyright (C) 1995-2005 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#define ZLIB_INTERNAL -#include "zlib.h" - -/* =========================================================================== - Compresses the source buffer into the destination buffer. The level - parameter has the same meaning as in deflateInit. sourceLen is the byte - length of the source buffer. Upon entry, destLen is the total size of the - destination buffer, which must be at least 0.1% larger than sourceLen plus - 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. - - compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough - memory, Z_BUF_ERROR if there was not enough room in the output buffer, - Z_STREAM_ERROR if the level parameter is invalid. -*/ -int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) - Bytef *dest; - uLongf *destLen; - const Bytef *source; - uLong sourceLen; - int level; -{ - z_stream stream; - int err; - - stream.next_in = (Bytef*)source; - stream.avail_in = (uInt)sourceLen; -#ifdef MAXSEG_64K - /* Check for source > 64K on 16-bit machine: */ - if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; -#endif - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)0; - stream.zfree = (free_func)0; - stream.opaque = (voidpf)0; - - err = deflateInit(&stream, level); - if (err != Z_OK) return err; - - err = deflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - deflateEnd(&stream); - return err == Z_OK ? Z_BUF_ERROR : err; - } - *destLen = stream.total_out; - - err = deflateEnd(&stream); - return err; -} - -/* =========================================================================== - */ -int ZEXPORT compress (dest, destLen, source, sourceLen) - Bytef *dest; - uLongf *destLen; - const Bytef *source; - uLong sourceLen; -{ - return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); -} - -/* =========================================================================== - If the default memLevel or windowBits for deflateInit() is changed, then - this function needs to be updated. - */ -uLong ZEXPORT compressBound (sourceLen) - uLong sourceLen; -{ - return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + - (sourceLen >> 25) + 13; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.c deleted file mode 100644 index 07265c6..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.c +++ /dev/null @@ -1,442 +0,0 @@ -/* crc32.c -- compute the CRC-32 of a data stream - * Copyright (C) 1995-2006, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - * - * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster - * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing - * tables for updating the shift register in one step with three exclusive-ors - * instead of four steps with four exclusive-ors. This results in about a - * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3. - */ - -/* @(#) $Id$ */ - -/* - Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore - protection on the static variables used to control the first-use generation - of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should - first call get_crc_table() to initialize the tables before allowing more than - one thread to use crc32(). - */ - -#ifdef MAKECRCH -# include <stdio.h> -# ifndef DYNAMIC_CRC_TABLE -# define DYNAMIC_CRC_TABLE -# endif /* !DYNAMIC_CRC_TABLE */ -#endif /* MAKECRCH */ - -#include "zutil.h" /* for STDC and FAR definitions */ - -#define local static - -/* Find a four-byte integer type for crc32_little() and crc32_big(). */ -#ifndef NOBYFOUR -# ifdef STDC /* need ANSI C limits.h to determine sizes */ -# include <limits.h> -# define BYFOUR -# if (UINT_MAX == 0xffffffffUL) - typedef unsigned int u4; -# else -# if (ULONG_MAX == 0xffffffffUL) - typedef unsigned long u4; -# else -# if (USHRT_MAX == 0xffffffffUL) - typedef unsigned short u4; -# else -# undef BYFOUR /* can't find a four-byte integer type! */ -# endif -# endif -# endif -# endif /* STDC */ -#endif /* !NOBYFOUR */ - -/* Definitions for doing the crc four data bytes at a time. */ -#ifdef BYFOUR -# define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \ - (((w)&0xff00)<<8)+(((w)&0xff)<<24)) - local unsigned long crc32_little OF((unsigned long, - const unsigned char FAR *, unsigned)); - local unsigned long crc32_big OF((unsigned long, - const unsigned char FAR *, unsigned)); -# define TBLS 8 -#else -# define TBLS 1 -#endif /* BYFOUR */ - -/* Local functions for crc concatenation */ -local unsigned long gf2_matrix_times OF((unsigned long *mat, - unsigned long vec)); -local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat)); -local uLong crc32_combine_(uLong crc1, uLong crc2, z_off64_t len2); - - -#ifdef DYNAMIC_CRC_TABLE - -local volatile int crc_table_empty = 1; -local unsigned long FAR crc_table[TBLS][256]; -local void make_crc_table OF((void)); -#ifdef MAKECRCH - local void write_table OF((FILE *, const unsigned long FAR *)); -#endif /* MAKECRCH */ -/* - Generate tables for a byte-wise 32-bit CRC calculation on the polynomial: - x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1. - - Polynomials over GF(2) are represented in binary, one bit per coefficient, - with the lowest powers in the most significant bit. Then adding polynomials - is just exclusive-or, and multiplying a polynomial by x is a right shift by - one. If we call the above polynomial p, and represent a byte as the - polynomial q, also with the lowest power in the most significant bit (so the - byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p, - where a mod b means the remainder after dividing a by b. - - This calculation is done using the shift-register method of multiplying and - taking the remainder. The register is initialized to zero, and for each - incoming bit, x^32 is added mod p to the register if the bit is a one (where - x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by - x (which is shifting right by one and adding x^32 mod p if the bit shifted - out is a one). We start with the highest power (least significant bit) of - q and repeat for all eight bits of q. - - The first table is simply the CRC of all possible eight bit values. This is - all the information needed to generate CRCs on data a byte at a time for all - combinations of CRC register values and incoming bytes. The remaining tables - allow for word-at-a-time CRC calculation for both big-endian and little- - endian machines, where a word is four bytes. -*/ -local void make_crc_table() -{ - unsigned long c; - int n, k; - unsigned long poly; /* polynomial exclusive-or pattern */ - /* terms of polynomial defining this crc (except x^32): */ - static volatile int first = 1; /* flag to limit concurrent making */ - static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26}; - - /* See if another task is already doing this (not thread-safe, but better - than nothing -- significantly reduces duration of vulnerability in - case the advice about DYNAMIC_CRC_TABLE is ignored) */ - if (first) { - first = 0; - - /* make exclusive-or pattern from polynomial (0xedb88320UL) */ - poly = 0UL; - for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++) - poly |= 1UL << (31 - p[n]); - - /* generate a crc for every 8-bit value */ - for (n = 0; n < 256; n++) { - c = (unsigned long)n; - for (k = 0; k < 8; k++) - c = c & 1 ? poly ^ (c >> 1) : c >> 1; - crc_table[0][n] = c; - } - -#ifdef BYFOUR - /* generate crc for each value followed by one, two, and three zeros, - and then the byte reversal of those as well as the first table */ - for (n = 0; n < 256; n++) { - c = crc_table[0][n]; - crc_table[4][n] = REV(c); - for (k = 1; k < 4; k++) { - c = crc_table[0][c & 0xff] ^ (c >> 8); - crc_table[k][n] = c; - crc_table[k + 4][n] = REV(c); - } - } -#endif /* BYFOUR */ - - crc_table_empty = 0; - } - else { /* not first */ - /* wait for the other guy to finish (not efficient, but rare) */ - while (crc_table_empty) - ; - } - -#ifdef MAKECRCH - /* write out CRC tables to crc32.h */ - { - FILE *out; - - out = fopen("crc32.h", "w"); - if (out == NULL) return; - fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n"); - fprintf(out, " * Generated automatically by crc32.c\n */\n\n"); - fprintf(out, "local const unsigned long FAR "); - fprintf(out, "crc_table[TBLS][256] =\n{\n {\n"); - write_table(out, crc_table[0]); -# ifdef BYFOUR - fprintf(out, "#ifdef BYFOUR\n"); - for (k = 1; k < 8; k++) { - fprintf(out, " },\n {\n"); - write_table(out, crc_table[k]); - } - fprintf(out, "#endif\n"); -# endif /* BYFOUR */ - fprintf(out, " }\n};\n"); - fclose(out); - } -#endif /* MAKECRCH */ -} - -#ifdef MAKECRCH -local void write_table(out, table) - FILE *out; - const unsigned long FAR *table; -{ - int n; - - for (n = 0; n < 256; n++) - fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", table[n], - n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", ")); -} -#endif /* MAKECRCH */ - -#else /* !DYNAMIC_CRC_TABLE */ -/* ======================================================================== - * Tables of CRC-32s of all single-byte values, made by make_crc_table(). - */ -#include "crc32.h" -#endif /* DYNAMIC_CRC_TABLE */ - -/* ========================================================================= - * This function can be used by asm versions of crc32() - */ -const unsigned long FAR * ZEXPORT get_crc_table() -{ -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - return (const unsigned long FAR *)crc_table; -} - -/* ========================================================================= */ -#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8) -#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1 - -/* ========================================================================= */ -unsigned long ZEXPORT crc32(crc, buf, len) - unsigned long crc; - const unsigned char FAR *buf; - uInt len; -{ - if (buf == Z_NULL) return 0UL; - -#ifdef DYNAMIC_CRC_TABLE - if (crc_table_empty) - make_crc_table(); -#endif /* DYNAMIC_CRC_TABLE */ - -#ifdef BYFOUR - if (sizeof(void *) == sizeof(ptrdiff_t)) { - u4 endian; - - endian = 1; - if (*((unsigned char *)(&endian))) - return crc32_little(crc, buf, len); - else - return crc32_big(crc, buf, len); - } -#endif /* BYFOUR */ - crc = crc ^ 0xffffffffUL; - while (len >= 8) { - DO8; - len -= 8; - } - if (len) do { - DO1; - } while (--len); - return crc ^ 0xffffffffUL; -} - -#ifdef BYFOUR - -/* ========================================================================= */ -#define DOLIT4 c ^= *buf4++; \ - c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \ - crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24] -#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4 - -/* ========================================================================= */ -local unsigned long crc32_little(crc, buf, len) - unsigned long crc; - const unsigned char FAR *buf; - unsigned len; -{ - register u4 c; - register const u4 FAR *buf4; - - c = (u4)crc; - c = ~c; - while (len && ((ptrdiff_t)buf & 3)) { - c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); - len--; - } - - buf4 = (const u4 FAR *)(const void FAR *)buf; - while (len >= 32) { - DOLIT32; - len -= 32; - } - while (len >= 4) { - DOLIT4; - len -= 4; - } - buf = (const unsigned char FAR *)buf4; - - if (len) do { - c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); - } while (--len); - c = ~c; - return (unsigned long)c; -} - -/* ========================================================================= */ -#define DOBIG4 c ^= *++buf4; \ - c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \ - crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24] -#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4 - -/* ========================================================================= */ -local unsigned long crc32_big(crc, buf, len) - unsigned long crc; - const unsigned char FAR *buf; - unsigned len; -{ - register u4 c; - register const u4 FAR *buf4; - - c = REV((u4)crc); - c = ~c; - while (len && ((ptrdiff_t)buf & 3)) { - c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); - len--; - } - - buf4 = (const u4 FAR *)(const void FAR *)buf; - buf4--; - while (len >= 32) { - DOBIG32; - len -= 32; - } - while (len >= 4) { - DOBIG4; - len -= 4; - } - buf4++; - buf = (const unsigned char FAR *)buf4; - - if (len) do { - c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); - } while (--len); - c = ~c; - return (unsigned long)(REV(c)); -} - -#endif /* BYFOUR */ - -#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */ - -/* ========================================================================= */ -local unsigned long gf2_matrix_times(mat, vec) - unsigned long *mat; - unsigned long vec; -{ - unsigned long sum; - - sum = 0; - while (vec) { - if (vec & 1) - sum ^= *mat; - vec >>= 1; - mat++; - } - return sum; -} - -/* ========================================================================= */ -local void gf2_matrix_square(square, mat) - unsigned long *square; - unsigned long *mat; -{ - int n; - - for (n = 0; n < GF2_DIM; n++) - square[n] = gf2_matrix_times(mat, mat[n]); -} - -/* ========================================================================= */ -local uLong crc32_combine_(crc1, crc2, len2) - uLong crc1; - uLong crc2; - z_off64_t len2; -{ - int n; - unsigned long row; - unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */ - unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */ - - /* degenerate case (also disallow negative lengths) */ - if (len2 <= 0) - return crc1; - - /* put operator for one zero bit in odd */ - odd[0] = 0xedb88320UL; /* CRC-32 polynomial */ - row = 1; - for (n = 1; n < GF2_DIM; n++) { - odd[n] = row; - row <<= 1; - } - - /* put operator for two zero bits in even */ - gf2_matrix_square(even, odd); - - /* put operator for four zero bits in odd */ - gf2_matrix_square(odd, even); - - /* apply len2 zeros to crc1 (first square will put the operator for one - zero byte, eight zero bits, in even) */ - do { - /* apply zeros operator for this bit of len2 */ - gf2_matrix_square(even, odd); - if (len2 & 1) - crc1 = gf2_matrix_times(even, crc1); - len2 >>= 1; - - /* if no more bits set, then done */ - if (len2 == 0) - break; - - /* another iteration of the loop with odd and even swapped */ - gf2_matrix_square(odd, even); - if (len2 & 1) - crc1 = gf2_matrix_times(odd, crc1); - len2 >>= 1; - - /* if no more bits set, then done */ - } while (len2 != 0); - - /* return combined crc */ - crc1 ^= crc2; - return crc1; -} - -/* ========================================================================= */ -uLong ZEXPORT crc32_combine(crc1, crc2, len2) - uLong crc1; - uLong crc2; - z_off_t len2; -{ - return crc32_combine_(crc1, crc2, len2); -} - -uLong ZEXPORT crc32_combine64(crc1, crc2, len2) - uLong crc1; - uLong crc2; - z_off64_t len2; -{ - return crc32_combine_(crc1, crc2, len2); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.h deleted file mode 100644 index 8053b61..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/crc32.h +++ /dev/null @@ -1,441 +0,0 @@ -/* crc32.h -- tables for rapid CRC calculation - * Generated automatically by crc32.c - */ - -local const unsigned long FAR crc_table[TBLS][256] = -{ - { - 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL, - 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL, - 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL, - 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL, - 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL, - 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL, - 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL, - 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL, - 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL, - 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL, - 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL, - 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL, - 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL, - 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL, - 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL, - 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL, - 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL, - 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL, - 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL, - 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL, - 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL, - 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL, - 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL, - 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL, - 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL, - 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL, - 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL, - 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL, - 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL, - 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL, - 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL, - 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL, - 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL, - 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL, - 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL, - 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL, - 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL, - 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL, - 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL, - 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL, - 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL, - 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL, - 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL, - 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL, - 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL, - 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL, - 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL, - 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL, - 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL, - 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, - 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, - 0x2d02ef8dUL -#ifdef BYFOUR - }, - { - 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL, - 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL, - 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL, - 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL, - 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0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL, - 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL, - 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL, - 0xf10605deUL -#endif - } -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.c deleted file mode 100644 index 1a37563..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.c +++ /dev/null @@ -1,1834 +0,0 @@ -/* deflate.c -- compress data using the deflation algorithm - * Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * ALGORITHM - * - * The "deflation" process depends on being able to identify portions - * of the input text which are identical to earlier input (within a - * sliding window trailing behind the input currently being processed). - * - * The most straightforward technique turns out to be the fastest for - * most input files: try all possible matches and select the longest. - * The key feature of this algorithm is that insertions into the string - * dictionary are very simple and thus fast, and deletions are avoided - * completely. Insertions are performed at each input character, whereas - * string matches are performed only when the previous match ends. So it - * is preferable to spend more time in matches to allow very fast string - * insertions and avoid deletions. The matching algorithm for small - * strings is inspired from that of Rabin & Karp. A brute force approach - * is used to find longer strings when a small match has been found. - * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze - * (by Leonid Broukhis). - * A previous version of this file used a more sophisticated algorithm - * (by Fiala and Greene) which is guaranteed to run in linear amortized - * time, but has a larger average cost, uses more memory and is patented. - * However the F&G algorithm may be faster for some highly redundant - * files if the parameter max_chain_length (described below) is too large. - * - * ACKNOWLEDGEMENTS - * - * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and - * I found it in 'freeze' written by Leonid Broukhis. - * Thanks to many people for bug reports and testing. - * - * REFERENCES - * - * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification". - * Available in http://www.ietf.org/rfc/rfc1951.txt - * - * A description of the Rabin and Karp algorithm is given in the book - * "Algorithms" by R. Sedgewick, Addison-Wesley, p252. - * - * Fiala,E.R., and Greene,D.H. - * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595 - * - */ - -/* @(#) $Id$ */ - -#include "deflate.h" - -const char deflate_copyright[] = - " deflate 1.2.5 Copyright 1995-2010 Jean-loup Gailly and Mark Adler "; -/* - If you use the zlib library in a product, an acknowledgment is welcome - in the documentation of your product. If for some reason you cannot - include such an acknowledgment, I would appreciate that you keep this - copyright string in the executable of your product. - */ - -/* =========================================================================== - * Function prototypes. - */ -typedef enum { - need_more, /* block not completed, need more input or more output */ - block_done, /* block flush performed */ - finish_started, /* finish started, need only more output at next deflate */ - finish_done /* finish done, accept no more input or output */ -} block_state; - -typedef block_state (*compress_func) OF((deflate_state *s, int flush)); -/* Compression function. Returns the block state after the call. */ - -local void fill_window OF((deflate_state *s)); -local block_state deflate_stored OF((deflate_state *s, int flush)); -local block_state deflate_fast OF((deflate_state *s, int flush)); -#ifndef FASTEST -local block_state deflate_slow OF((deflate_state *s, int flush)); -#endif -local block_state deflate_rle OF((deflate_state *s, int flush)); -local block_state deflate_huff OF((deflate_state *s, int flush)); -local void lm_init OF((deflate_state *s)); -local void putShortMSB OF((deflate_state *s, uInt b)); -local void flush_pending OF((z_streamp strm)); -local int read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); -#ifdef ASMV - void match_init OF((void)); /* asm code initialization */ - uInt longest_match OF((deflate_state *s, IPos cur_match)); -#else -local uInt longest_match OF((deflate_state *s, IPos cur_match)); -#endif - -#ifdef DEBUG_ZLIB -local void check_match OF((deflate_state *s, IPos start, IPos match, - int length)); -#endif - -/* =========================================================================== - * Local data - */ - -#define NIL 0 -/* Tail of hash chains */ - -#ifndef TOO_FAR -# define TOO_FAR 4096 -#endif -/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */ - -/* Values for max_lazy_match, good_match and max_chain_length, depending on - * the desired pack level (0..9). The values given below have been tuned to - * exclude worst case performance for pathological files. Better values may be - * found for specific files. - */ -typedef struct config_s { - ush good_length; /* reduce lazy search above this match length */ - ush max_lazy; /* do not perform lazy search above this match length */ - ush nice_length; /* quit search above this match length */ - ush max_chain; - compress_func func; -} config; - -#ifdef FASTEST -local const config configuration_table[2] = { -/* good lazy nice chain */ -/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ -/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */ -#else -local const config configuration_table[10] = { -/* good lazy nice chain */ -/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ -/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */ -/* 2 */ {4, 5, 16, 8, deflate_fast}, -/* 3 */ {4, 6, 32, 32, deflate_fast}, - -/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */ -/* 5 */ {8, 16, 32, 32, deflate_slow}, -/* 6 */ {8, 16, 128, 128, deflate_slow}, -/* 7 */ {8, 32, 128, 256, deflate_slow}, -/* 8 */ {32, 128, 258, 1024, deflate_slow}, -/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */ -#endif - -/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4 - * For deflate_fast() (levels <= 3) good is ignored and lazy has a different - * meaning. - */ - -#define EQUAL 0 -/* result of memcmp for equal strings */ - -#ifndef NO_DUMMY_DECL -struct static_tree_desc_s {int dummy;}; /* for buggy compilers */ -#endif - -/* =========================================================================== - * Update a hash value with the given input byte - * IN assertion: all calls to to UPDATE_HASH are made with consecutive - * input characters, so that a running hash key can be computed from the - * previous key instead of complete recalculation each time. - */ -#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask) - - -/* =========================================================================== - * Insert string str in the dictionary and set match_head to the previous head - * of the hash chain (the most recent string with same hash key). Return - * the previous length of the hash chain. - * If this file is compiled with -DFASTEST, the compression level is forced - * to 1, and no hash chains are maintained. - * IN assertion: all calls to to INSERT_STRING are made with consecutive - * input characters and the first MIN_MATCH bytes of str are valid - * (except for the last MIN_MATCH-1 bytes of the input file). - */ -#ifdef FASTEST -#define INSERT_STRING(s, str, match_head) \ - (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ - match_head = s->head[s->ins_h], \ - s->head[s->ins_h] = (Pos)(str)) -#else -#define INSERT_STRING(s, str, match_head) \ - (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ - match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \ - s->head[s->ins_h] = (Pos)(str)) -#endif - -/* =========================================================================== - * Initialize the hash table (avoiding 64K overflow for 16 bit systems). - * prev[] will be initialized on the fly. - */ -#define CLEAR_HASH(s) \ - s->head[s->hash_size-1] = NIL; \ - zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head)); - -/* ========================================================================= */ -int ZEXPORT deflateInit_(strm, level, version, stream_size) - z_streamp strm; - int level; - const char *version; - int stream_size; -{ - return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, - Z_DEFAULT_STRATEGY, version, stream_size); - /* To do: ignore strm->next_in if we use it as window */ -} - -/* ========================================================================= */ -int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, - version, stream_size) - z_streamp strm; - int level; - int method; - int windowBits; - int memLevel; - int strategy; - const char *version; - int stream_size; -{ - deflate_state *s; - int wrap = 1; - static const char my_version[] = ZLIB_VERSION; - - ushf *overlay; - /* We overlay pending_buf and d_buf+l_buf. This works since the average - * output size for (length,distance) codes is <= 24 bits. - */ - - if (version == Z_NULL || version[0] != my_version[0] || - stream_size != sizeof(z_stream)) { - return Z_VERSION_ERROR; - } - if (strm == Z_NULL) return Z_STREAM_ERROR; - - strm->msg = Z_NULL; - if (strm->zalloc == (alloc_func)0) { - strm->zalloc = zcalloc; - strm->opaque = (voidpf)0; - } - if (strm->zfree == (free_func)0) strm->zfree = zcfree; - -#ifdef FASTEST - if (level != 0) level = 1; -#else - if (level == Z_DEFAULT_COMPRESSION) level = 6; -#endif - - if (windowBits < 0) { /* suppress zlib wrapper */ - wrap = 0; - windowBits = -windowBits; - } -#ifdef GZIP - else if (windowBits > 15) { - wrap = 2; /* write gzip wrapper instead */ - windowBits -= 16; - } -#endif - if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED || - windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || - strategy < 0 || strategy > Z_FIXED) { - return Z_STREAM_ERROR; - } - if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */ - s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state)); - if (s == Z_NULL) return Z_MEM_ERROR; - strm->state = (struct internal_state FAR *)s; - s->strm = strm; - - s->wrap = wrap; - s->gzhead = Z_NULL; - s->w_bits = windowBits; - s->w_size = 1 << s->w_bits; - s->w_mask = s->w_size - 1; - - s->hash_bits = memLevel + 7; - s->hash_size = 1 << s->hash_bits; - s->hash_mask = s->hash_size - 1; - s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH); - - s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte)); - s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos)); - s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos)); - - s->high_water = 0; /* nothing written to s->window yet */ - - s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ - - overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2); - s->pending_buf = (uchf *) overlay; - s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L); - - if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL || - s->pending_buf == Z_NULL) { - s->status = FINISH_STATE; - strm->msg = (char*)ERR_MSG(Z_MEM_ERROR); - deflateEnd (strm); - return Z_MEM_ERROR; - } - s->d_buf = overlay + s->lit_bufsize/sizeof(ush); - s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize; - - s->level = level; - s->strategy = strategy; - s->method = (Byte)method; - - return deflateReset(strm); -} - -/* ========================================================================= */ -int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength) - z_streamp strm; - const Bytef *dictionary; - uInt dictLength; -{ - deflate_state *s; - uInt length = dictLength; - uInt n; - IPos hash_head = 0; - - if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL || - strm->state->wrap == 2 || - (strm->state->wrap == 1 && strm->state->status != INIT_STATE)) - return Z_STREAM_ERROR; - - s = strm->state; - if (s->wrap) - strm->adler = adler32(strm->adler, dictionary, dictLength); - - if (length < MIN_MATCH) return Z_OK; - if (length > s->w_size) { - length = s->w_size; - dictionary += dictLength - length; /* use the tail of the dictionary */ - } - zmemcpy(s->window, dictionary, length); - s->strstart = length; - s->block_start = (long)length; - - /* Insert all strings in the hash table (except for the last two bytes). - * s->lookahead stays null, so s->ins_h will be recomputed at the next - * call of fill_window. - */ - s->ins_h = s->window[0]; - UPDATE_HASH(s, s->ins_h, s->window[1]); - for (n = 0; n <= length - MIN_MATCH; n++) { - INSERT_STRING(s, n, hash_head); - } - if (hash_head) hash_head = 0; /* to make compiler happy */ - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT deflateReset (strm) - z_streamp strm; -{ - deflate_state *s; - - if (strm == Z_NULL || strm->state == Z_NULL || - strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) { - return Z_STREAM_ERROR; - } - - strm->total_in = strm->total_out = 0; - strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */ - strm->data_type = Z_UNKNOWN; - - s = (deflate_state *)strm->state; - s->pending = 0; - s->pending_out = s->pending_buf; - - if (s->wrap < 0) { - s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */ - } - s->status = s->wrap ? INIT_STATE : BUSY_STATE; - strm->adler = -#ifdef GZIP - s->wrap == 2 ? crc32(0L, Z_NULL, 0) : -#endif - adler32(0L, Z_NULL, 0); - s->last_flush = Z_NO_FLUSH; - - _tr_init(s); - lm_init(s); - - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT deflateSetHeader (strm, head) - z_streamp strm; - gz_headerp head; -{ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - if (strm->state->wrap != 2) return Z_STREAM_ERROR; - strm->state->gzhead = head; - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT deflatePrime (strm, bits, value) - z_streamp strm; - int bits; - int value; -{ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - strm->state->bi_valid = bits; - strm->state->bi_buf = (ush)(value & ((1 << bits) - 1)); - return Z_OK; -} - -/* ========================================================================= */ -int ZEXPORT deflateParams(strm, level, strategy) - z_streamp strm; - int level; - int strategy; -{ - deflate_state *s; - compress_func func; - int err = Z_OK; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - s = strm->state; - -#ifdef FASTEST - if (level != 0) level = 1; -#else - if (level == Z_DEFAULT_COMPRESSION) level = 6; -#endif - if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) { - return Z_STREAM_ERROR; - } - func = configuration_table[s->level].func; - - if ((strategy != s->strategy || func != configuration_table[level].func) && - strm->total_in != 0) { - /* Flush the last buffer: */ - err = deflate(strm, Z_BLOCK); - } - if (s->level != level) { - s->level = level; - s->max_lazy_match = configuration_table[level].max_lazy; - s->good_match = configuration_table[level].good_length; - s->nice_match = configuration_table[level].nice_length; - s->max_chain_length = configuration_table[level].max_chain; - } - s->strategy = strategy; - return err; -} - -/* ========================================================================= */ -int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain) - z_streamp strm; - int good_length; - int max_lazy; - int nice_length; - int max_chain; -{ - deflate_state *s; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - s = strm->state; - s->good_match = good_length; - s->max_lazy_match = max_lazy; - s->nice_match = nice_length; - s->max_chain_length = max_chain; - return Z_OK; -} - -/* ========================================================================= - * For the default windowBits of 15 and memLevel of 8, this function returns - * a close to exact, as well as small, upper bound on the compressed size. - * They are coded as constants here for a reason--if the #define's are - * changed, then this function needs to be changed as well. The return - * value for 15 and 8 only works for those exact settings. - * - * For any setting other than those defaults for windowBits and memLevel, - * the value returned is a conservative worst case for the maximum expansion - * resulting from using fixed blocks instead of stored blocks, which deflate - * can emit on compressed data for some combinations of the parameters. - * - * This function could be more sophisticated to provide closer upper bounds for - * every combination of windowBits and memLevel. But even the conservative - * upper bound of about 14% expansion does not seem onerous for output buffer - * allocation. - */ -uLong ZEXPORT deflateBound(strm, sourceLen) - z_streamp strm; - uLong sourceLen; -{ - deflate_state *s; - uLong complen, wraplen; - Bytef *str; - - /* conservative upper bound for compressed data */ - complen = sourceLen + - ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5; - - /* if can't get parameters, return conservative bound plus zlib wrapper */ - if (strm == Z_NULL || strm->state == Z_NULL) - return complen + 6; - - /* compute wrapper length */ - s = strm->state; - switch (s->wrap) { - case 0: /* raw deflate */ - wraplen = 0; - break; - case 1: /* zlib wrapper */ - wraplen = 6 + (s->strstart ? 4 : 0); - break; - case 2: /* gzip wrapper */ - wraplen = 18; - if (s->gzhead != Z_NULL) { /* user-supplied gzip header */ - if (s->gzhead->extra != Z_NULL) - wraplen += 2 + s->gzhead->extra_len; - str = s->gzhead->name; - if (str != Z_NULL) - do { - wraplen++; - } while (*str++); - str = s->gzhead->comment; - if (str != Z_NULL) - do { - wraplen++; - } while (*str++); - if (s->gzhead->hcrc) - wraplen += 2; - } - break; - default: /* for compiler happiness */ - wraplen = 6; - } - - /* if not default parameters, return conservative bound */ - if (s->w_bits != 15 || s->hash_bits != 8 + 7) - return complen + wraplen; - - /* default settings: return tight bound for that case */ - return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + - (sourceLen >> 25) + 13 - 6 + wraplen; -} - -/* ========================================================================= - * Put a short in the pending buffer. The 16-bit value is put in MSB order. - * IN assertion: the stream state is correct and there is enough room in - * pending_buf. - */ -local void putShortMSB (s, b) - deflate_state *s; - uInt b; -{ - put_byte(s, (Byte)(b >> 8)); - put_byte(s, (Byte)(b & 0xff)); -} - -/* ========================================================================= - * Flush as much pending output as possible. All deflate() output goes - * through this function so some applications may wish to modify it - * to avoid allocating a large strm->next_out buffer and copying into it. - * (See also read_buf()). - */ -local void flush_pending(strm) - z_streamp strm; -{ - unsigned len = strm->state->pending; - - if (len > strm->avail_out) len = strm->avail_out; - if (len == 0) return; - - zmemcpy(strm->next_out, strm->state->pending_out, len); - strm->next_out += len; - strm->state->pending_out += len; - strm->total_out += len; - strm->avail_out -= len; - strm->state->pending -= len; - if (strm->state->pending == 0) { - strm->state->pending_out = strm->state->pending_buf; - } -} - -/* ========================================================================= */ -int ZEXPORT deflate (strm, flush) - z_streamp strm; - int flush; -{ - int old_flush; /* value of flush param for previous deflate call */ - deflate_state *s; - - if (strm == Z_NULL || strm->state == Z_NULL || - flush > Z_BLOCK || flush < 0) { - return Z_STREAM_ERROR; - } - s = strm->state; - - if (strm->next_out == Z_NULL || - (strm->next_in == Z_NULL && strm->avail_in != 0) || - (s->status == FINISH_STATE && flush != Z_FINISH)) { - ERR_RETURN(strm, Z_STREAM_ERROR); - } - if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR); - - s->strm = strm; /* just in case */ - old_flush = s->last_flush; - s->last_flush = flush; - - /* Write the header */ - if (s->status == INIT_STATE) { -#ifdef GZIP - if (s->wrap == 2) { - strm->adler = crc32(0L, Z_NULL, 0); - put_byte(s, 31); - put_byte(s, 139); - put_byte(s, 8); - if (s->gzhead == Z_NULL) { - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, 0); - put_byte(s, s->level == 9 ? 2 : - (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? - 4 : 0)); - put_byte(s, OS_CODE); - s->status = BUSY_STATE; - } - else { - put_byte(s, (s->gzhead->text ? 1 : 0) + - (s->gzhead->hcrc ? 2 : 0) + - (s->gzhead->extra == Z_NULL ? 0 : 4) + - (s->gzhead->name == Z_NULL ? 0 : 8) + - (s->gzhead->comment == Z_NULL ? 0 : 16) - ); - put_byte(s, (Byte)(s->gzhead->time & 0xff)); - put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff)); - put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff)); - put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff)); - put_byte(s, s->level == 9 ? 2 : - (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? - 4 : 0)); - put_byte(s, s->gzhead->os & 0xff); - if (s->gzhead->extra != Z_NULL) { - put_byte(s, s->gzhead->extra_len & 0xff); - put_byte(s, (s->gzhead->extra_len >> 8) & 0xff); - } - if (s->gzhead->hcrc) - strm->adler = crc32(strm->adler, s->pending_buf, - s->pending); - s->gzindex = 0; - s->status = EXTRA_STATE; - } - } - else -#endif - { - uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8; - uInt level_flags; - - if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2) - level_flags = 0; - else if (s->level < 6) - level_flags = 1; - else if (s->level == 6) - level_flags = 2; - else - level_flags = 3; - header |= (level_flags << 6); - if (s->strstart != 0) header |= PRESET_DICT; - header += 31 - (header % 31); - - s->status = BUSY_STATE; - putShortMSB(s, header); - - /* Save the adler32 of the preset dictionary: */ - if (s->strstart != 0) { - putShortMSB(s, (uInt)(strm->adler >> 16)); - putShortMSB(s, (uInt)(strm->adler & 0xffff)); - } - strm->adler = adler32(0L, Z_NULL, 0); - } - } -#ifdef GZIP - if (s->status == EXTRA_STATE) { - if (s->gzhead->extra != Z_NULL) { - uInt beg = s->pending; /* start of bytes to update crc */ - - while (s->gzindex < (s->gzhead->extra_len & 0xffff)) { - if (s->pending == s->pending_buf_size) { - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - flush_pending(strm); - beg = s->pending; - if (s->pending == s->pending_buf_size) - break; - } - put_byte(s, s->gzhead->extra[s->gzindex]); - s->gzindex++; - } - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - if (s->gzindex == s->gzhead->extra_len) { - s->gzindex = 0; - s->status = NAME_STATE; - } - } - else - s->status = NAME_STATE; - } - if (s->status == NAME_STATE) { - if (s->gzhead->name != Z_NULL) { - uInt beg = s->pending; /* start of bytes to update crc */ - int val; - - do { - if (s->pending == s->pending_buf_size) { - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - flush_pending(strm); - beg = s->pending; - if (s->pending == s->pending_buf_size) { - val = 1; - break; - } - } - val = s->gzhead->name[s->gzindex++]; - put_byte(s, val); - } while (val != 0); - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - if (val == 0) { - s->gzindex = 0; - s->status = COMMENT_STATE; - } - } - else - s->status = COMMENT_STATE; - } - if (s->status == COMMENT_STATE) { - if (s->gzhead->comment != Z_NULL) { - uInt beg = s->pending; /* start of bytes to update crc */ - int val; - - do { - if (s->pending == s->pending_buf_size) { - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - flush_pending(strm); - beg = s->pending; - if (s->pending == s->pending_buf_size) { - val = 1; - break; - } - } - val = s->gzhead->comment[s->gzindex++]; - put_byte(s, val); - } while (val != 0); - if (s->gzhead->hcrc && s->pending > beg) - strm->adler = crc32(strm->adler, s->pending_buf + beg, - s->pending - beg); - if (val == 0) - s->status = HCRC_STATE; - } - else - s->status = HCRC_STATE; - } - if (s->status == HCRC_STATE) { - if (s->gzhead->hcrc) { - if (s->pending + 2 > s->pending_buf_size) - flush_pending(strm); - if (s->pending + 2 <= s->pending_buf_size) { - put_byte(s, (Byte)(strm->adler & 0xff)); - put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); - strm->adler = crc32(0L, Z_NULL, 0); - s->status = BUSY_STATE; - } - } - else - s->status = BUSY_STATE; - } -#endif - - /* Flush as much pending output as possible */ - if (s->pending != 0) { - flush_pending(strm); - if (strm->avail_out == 0) { - /* Since avail_out is 0, deflate will be called again with - * more output space, but possibly with both pending and - * avail_in equal to zero. There won't be anything to do, - * but this is not an error situation so make sure we - * return OK instead of BUF_ERROR at next call of deflate: - */ - s->last_flush = -1; - return Z_OK; - } - - /* Make sure there is something to do and avoid duplicate consecutive - * flushes. For repeated and useless calls with Z_FINISH, we keep - * returning Z_STREAM_END instead of Z_BUF_ERROR. - */ - } else if (strm->avail_in == 0 && flush <= old_flush && - flush != Z_FINISH) { - ERR_RETURN(strm, Z_BUF_ERROR); - } - - /* User must not provide more input after the first FINISH: */ - if (s->status == FINISH_STATE && strm->avail_in != 0) { - ERR_RETURN(strm, Z_BUF_ERROR); - } - - /* Start a new block or continue the current one. - */ - if (strm->avail_in != 0 || s->lookahead != 0 || - (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) { - block_state bstate; - - bstate = s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) : - (s->strategy == Z_RLE ? deflate_rle(s, flush) : - (*(configuration_table[s->level].func))(s, flush)); - - if (bstate == finish_started || bstate == finish_done) { - s->status = FINISH_STATE; - } - if (bstate == need_more || bstate == finish_started) { - if (strm->avail_out == 0) { - s->last_flush = -1; /* avoid BUF_ERROR next call, see above */ - } - return Z_OK; - /* If flush != Z_NO_FLUSH && avail_out == 0, the next call - * of deflate should use the same flush parameter to make sure - * that the flush is complete. So we don't have to output an - * empty block here, this will be done at next call. This also - * ensures that for a very small output buffer, we emit at most - * one empty block. - */ - } - if (bstate == block_done) { - if (flush == Z_PARTIAL_FLUSH) { - _tr_align(s); - } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ - _tr_stored_block(s, (char*)0, 0L, 0); - /* For a full flush, this empty block will be recognized - * as a special marker by inflate_sync(). - */ - if (flush == Z_FULL_FLUSH) { - CLEAR_HASH(s); /* forget history */ - if (s->lookahead == 0) { - s->strstart = 0; - s->block_start = 0L; - } - } - } - flush_pending(strm); - if (strm->avail_out == 0) { - s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */ - return Z_OK; - } - } - } - Assert(strm->avail_out > 0, "bug2"); - - if (flush != Z_FINISH) return Z_OK; - if (s->wrap <= 0) return Z_STREAM_END; - - /* Write the trailer */ -#ifdef GZIP - if (s->wrap == 2) { - put_byte(s, (Byte)(strm->adler & 0xff)); - put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); - put_byte(s, (Byte)((strm->adler >> 16) & 0xff)); - put_byte(s, (Byte)((strm->adler >> 24) & 0xff)); - put_byte(s, (Byte)(strm->total_in & 0xff)); - put_byte(s, (Byte)((strm->total_in >> 8) & 0xff)); - put_byte(s, (Byte)((strm->total_in >> 16) & 0xff)); - put_byte(s, (Byte)((strm->total_in >> 24) & 0xff)); - } - else -#endif - { - putShortMSB(s, (uInt)(strm->adler >> 16)); - putShortMSB(s, (uInt)(strm->adler & 0xffff)); - } - flush_pending(strm); - /* If avail_out is zero, the application will call deflate again - * to flush the rest. - */ - if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */ - return s->pending != 0 ? Z_OK : Z_STREAM_END; -} - -/* ========================================================================= */ -int ZEXPORT deflateEnd (strm) - z_streamp strm; -{ - int status; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - - status = strm->state->status; - if (status != INIT_STATE && - status != EXTRA_STATE && - status != NAME_STATE && - status != COMMENT_STATE && - status != HCRC_STATE && - status != BUSY_STATE && - status != FINISH_STATE) { - return Z_STREAM_ERROR; - } - - /* Deallocate in reverse order of allocations: */ - TRY_FREE(strm, strm->state->pending_buf); - TRY_FREE(strm, strm->state->head); - TRY_FREE(strm, strm->state->prev); - TRY_FREE(strm, strm->state->window); - - ZFREE(strm, strm->state); - strm->state = Z_NULL; - - return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK; -} - -/* ========================================================================= - * Copy the source state to the destination state. - * To simplify the source, this is not supported for 16-bit MSDOS (which - * doesn't have enough memory anyway to duplicate compression states). - */ -int ZEXPORT deflateCopy (dest, source) - z_streamp dest; - z_streamp source; -{ -#ifdef MAXSEG_64K - return Z_STREAM_ERROR; -#else - deflate_state *ds; - deflate_state *ss; - ushf *overlay; - - - if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) { - return Z_STREAM_ERROR; - } - - ss = source->state; - - zmemcpy(dest, source, sizeof(z_stream)); - - ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state)); - if (ds == Z_NULL) return Z_MEM_ERROR; - dest->state = (struct internal_state FAR *) ds; - zmemcpy(ds, ss, sizeof(deflate_state)); - ds->strm = dest; - - ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte)); - ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos)); - ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos)); - overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2); - ds->pending_buf = (uchf *) overlay; - - if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL || - ds->pending_buf == Z_NULL) { - deflateEnd (dest); - return Z_MEM_ERROR; - } - /* following zmemcpy do not work for 16-bit MSDOS */ - zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte)); - zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos)); - zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos)); - zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size); - - ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf); - ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush); - ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize; - - ds->l_desc.dyn_tree = ds->dyn_ltree; - ds->d_desc.dyn_tree = ds->dyn_dtree; - ds->bl_desc.dyn_tree = ds->bl_tree; - - return Z_OK; -#endif /* MAXSEG_64K */ -} - -/* =========================================================================== - * Read a new buffer from the current input stream, update the adler32 - * and total number of bytes read. All deflate() input goes through - * this function so some applications may wish to modify it to avoid - * allocating a large strm->next_in buffer and copying from it. - * (See also flush_pending()). - */ -local int read_buf(strm, buf, size) - z_streamp strm; - Bytef *buf; - unsigned size; -{ - unsigned len = strm->avail_in; - - if (len > size) len = size; - if (len == 0) return 0; - - strm->avail_in -= len; - - if (strm->state->wrap == 1) { - strm->adler = adler32(strm->adler, strm->next_in, len); - } -#ifdef GZIP - else if (strm->state->wrap == 2) { - strm->adler = crc32(strm->adler, strm->next_in, len); - } -#endif - zmemcpy(buf, strm->next_in, len); - strm->next_in += len; - strm->total_in += len; - - return (int)len; -} - -/* =========================================================================== - * Initialize the "longest match" routines for a new zlib stream - */ -local void lm_init (s) - deflate_state *s; -{ - s->window_size = (ulg)2L*s->w_size; - - CLEAR_HASH(s); - - /* Set the default configuration parameters: - */ - s->max_lazy_match = configuration_table[s->level].max_lazy; - s->good_match = configuration_table[s->level].good_length; - s->nice_match = configuration_table[s->level].nice_length; - s->max_chain_length = configuration_table[s->level].max_chain; - - s->strstart = 0; - s->block_start = 0L; - s->lookahead = 0; - s->match_length = s->prev_length = MIN_MATCH-1; - s->match_available = 0; - s->ins_h = 0; -#ifndef FASTEST -#ifdef ASMV - match_init(); /* initialize the asm code */ -#endif -#endif -} - -#ifndef FASTEST -/* =========================================================================== - * Set match_start to the longest match starting at the given string and - * return its length. Matches shorter or equal to prev_length are discarded, - * in which case the result is equal to prev_length and match_start is - * garbage. - * IN assertions: cur_match is the head of the hash chain for the current - * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 - * OUT assertion: the match length is not greater than s->lookahead. - */ -#ifndef ASMV -/* For 80x86 and 680x0, an optimized version will be provided in match.asm or - * match.S. The code will be functionally equivalent. - */ -local uInt longest_match(s, cur_match) - deflate_state *s; - IPos cur_match; /* current match */ -{ - unsigned chain_length = s->max_chain_length;/* max hash chain length */ - register Bytef *scan = s->window + s->strstart; /* current string */ - register Bytef *match; /* matched string */ - register int len; /* length of current match */ - int best_len = s->prev_length; /* best match length so far */ - int nice_match = s->nice_match; /* stop if match long enough */ - IPos limit = s->strstart > (IPos)MAX_DIST(s) ? - s->strstart - (IPos)MAX_DIST(s) : NIL; - /* Stop when cur_match becomes <= limit. To simplify the code, - * we prevent matches with the string of window index 0. - */ - Posf *prev = s->prev; - uInt wmask = s->w_mask; - -#ifdef UNALIGNED_OK - /* Compare two bytes at a time. Note: this is not always beneficial. - * Try with and without -DUNALIGNED_OK to check. - */ - register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1; - register ush scan_start = *(ushf*)scan; - register ush scan_end = *(ushf*)(scan+best_len-1); -#else - register Bytef *strend = s->window + s->strstart + MAX_MATCH; - register Byte scan_end1 = scan[best_len-1]; - register Byte scan_end = scan[best_len]; -#endif - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - /* Do not waste too much time if we already have a good match: */ - if (s->prev_length >= s->good_match) { - chain_length >>= 2; - } - /* Do not look for matches beyond the end of the input. This is necessary - * to make deflate deterministic. - */ - if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; - - Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - do { - Assert(cur_match < s->strstart, "no future"); - match = s->window + cur_match; - - /* Skip to next match if the match length cannot increase - * or if the match length is less than 2. Note that the checks below - * for insufficient lookahead only occur occasionally for performance - * reasons. Therefore uninitialized memory will be accessed, and - * conditional jumps will be made that depend on those values. - * However the length of the match is limited to the lookahead, so - * the output of deflate is not affected by the uninitialized values. - */ -#if (defined(UNALIGNED_OK) && MAX_MATCH == 258) - /* This code assumes sizeof(unsigned short) == 2. Do not use - * UNALIGNED_OK if your compiler uses a different size. - */ - if (*(ushf*)(match+best_len-1) != scan_end || - *(ushf*)match != scan_start) continue; - - /* It is not necessary to compare scan[2] and match[2] since they are - * always equal when the other bytes match, given that the hash keys - * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at - * strstart+3, +5, ... up to strstart+257. We check for insufficient - * lookahead only every 4th comparison; the 128th check will be made - * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is - * necessary to put more guard bytes at the end of the window, or - * to check more often for insufficient lookahead. - */ - Assert(scan[2] == match[2], "scan[2]?"); - scan++, match++; - do { - } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) && - *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - *(ushf*)(scan+=2) == *(ushf*)(match+=2) && - scan < strend); - /* The funny "do {}" generates better code on most compilers */ - - /* Here, scan <= window+strstart+257 */ - Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - if (*scan == *match) scan++; - - len = (MAX_MATCH - 1) - (int)(strend-scan); - scan = strend - (MAX_MATCH-1); - -#else /* UNALIGNED_OK */ - - if (match[best_len] != scan_end || - match[best_len-1] != scan_end1 || - *match != *scan || - *++match != scan[1]) continue; - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2, match++; - Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - } while (*++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - scan < strend); - - Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (int)(strend - scan); - scan = strend - MAX_MATCH; - -#endif /* UNALIGNED_OK */ - - if (len > best_len) { - s->match_start = cur_match; - best_len = len; - if (len >= nice_match) break; -#ifdef UNALIGNED_OK - scan_end = *(ushf*)(scan+best_len-1); -#else - scan_end1 = scan[best_len-1]; - scan_end = scan[best_len]; -#endif - } - } while ((cur_match = prev[cur_match & wmask]) > limit - && --chain_length != 0); - - if ((uInt)best_len <= s->lookahead) return (uInt)best_len; - return s->lookahead; -} -#endif /* ASMV */ - -#else /* FASTEST */ - -/* --------------------------------------------------------------------------- - * Optimized version for FASTEST only - */ -local uInt longest_match(s, cur_match) - deflate_state *s; - IPos cur_match; /* current match */ -{ - register Bytef *scan = s->window + s->strstart; /* current string */ - register Bytef *match; /* matched string */ - register int len; /* length of current match */ - register Bytef *strend = s->window + s->strstart + MAX_MATCH; - - /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. - * It is easy to get rid of this optimization if necessary. - */ - Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); - - Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); - - Assert(cur_match < s->strstart, "no future"); - - match = s->window + cur_match; - - /* Return failure if the match length is less than 2: - */ - if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1; - - /* The check at best_len-1 can be removed because it will be made - * again later. (This heuristic is not always a win.) - * It is not necessary to compare scan[2] and match[2] since they - * are always equal when the other bytes match, given that - * the hash keys are equal and that HASH_BITS >= 8. - */ - scan += 2, match += 2; - Assert(*scan == *match, "match[2]?"); - - /* We check for insufficient lookahead only every 8th comparison; - * the 256th check will be made at strstart+258. - */ - do { - } while (*++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - *++scan == *++match && *++scan == *++match && - scan < strend); - - Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); - - len = MAX_MATCH - (int)(strend - scan); - - if (len < MIN_MATCH) return MIN_MATCH - 1; - - s->match_start = cur_match; - return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead; -} - -#endif /* FASTEST */ - -#ifdef DEBUG_ZLIB -/* =========================================================================== - * Check that the match at match_start is indeed a match. - */ -local void check_match(s, start, match, length) - deflate_state *s; - IPos start, match; - int length; -{ - /* check that the match is indeed a match */ - if (zmemcmp(s->window + match, - s->window + start, length) != EQUAL) { - fprintf(stderr, " start %u, match %u, length %d\n", - start, match, length); - do { - fprintf(stderr, "%c%c", s->window[match++], s->window[start++]); - } while (--length != 0); - z_error("invalid match"); - } - if (z_verbose > 1) { - fprintf(stderr,"\\[%d,%d]", start-match, length); - do { putc(s->window[start++], stderr); } while (--length != 0); - } -} -#else -# define check_match(s, start, match, length) -#endif /* DEBUG_ZLIB */ - -/* =========================================================================== - * Fill the window when the lookahead becomes insufficient. - * Updates strstart and lookahead. - * - * IN assertion: lookahead < MIN_LOOKAHEAD - * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD - * At least one byte has been read, or avail_in == 0; reads are - * performed for at least two bytes (required for the zip translate_eol - * option -- not supported here). - */ -local void fill_window(s) - deflate_state *s; -{ - register unsigned n, m; - register Posf *p; - unsigned more; /* Amount of free space at the end of the window. */ - uInt wsize = s->w_size; - - do { - more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart); - - /* Deal with !@#$% 64K limit: */ - if (sizeof(int) <= 2) { - if (more == 0 && s->strstart == 0 && s->lookahead == 0) { - more = wsize; - - } else if (more == (unsigned)(-1)) { - /* Very unlikely, but possible on 16 bit machine if - * strstart == 0 && lookahead == 1 (input done a byte at time) - */ - more--; - } - } - - /* If the window is almost full and there is insufficient lookahead, - * move the upper half to the lower one to make room in the upper half. - */ - if (s->strstart >= wsize+MAX_DIST(s)) { - - zmemcpy(s->window, s->window+wsize, (unsigned)wsize); - s->match_start -= wsize; - s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ - s->block_start -= (long) wsize; - - /* Slide the hash table (could be avoided with 32 bit values - at the expense of memory usage). We slide even when level == 0 - to keep the hash table consistent if we switch back to level > 0 - later. (Using level 0 permanently is not an optimal usage of - zlib, so we don't care about this pathological case.) - */ - n = s->hash_size; - p = &s->head[n]; - do { - m = *--p; - *p = (Pos)(m >= wsize ? m-wsize : NIL); - } while (--n); - - n = wsize; -#ifndef FASTEST - p = &s->prev[n]; - do { - m = *--p; - *p = (Pos)(m >= wsize ? m-wsize : NIL); - /* If n is not on any hash chain, prev[n] is garbage but - * its value will never be used. - */ - } while (--n); -#endif - more += wsize; - } - if (s->strm->avail_in == 0) return; - - /* If there was no sliding: - * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && - * more == window_size - lookahead - strstart - * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) - * => more >= window_size - 2*WSIZE + 2 - * In the BIG_MEM or MMAP case (not yet supported), - * window_size == input_size + MIN_LOOKAHEAD && - * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. - * Otherwise, window_size == 2*WSIZE so more >= 2. - * If there was sliding, more >= WSIZE. So in all cases, more >= 2. - */ - Assert(more >= 2, "more < 2"); - - n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more); - s->lookahead += n; - - /* Initialize the hash value now that we have some input: */ - if (s->lookahead >= MIN_MATCH) { - s->ins_h = s->window[s->strstart]; - UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]); -#if MIN_MATCH != 3 - Call UPDATE_HASH() MIN_MATCH-3 more times -#endif - } - /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, - * but this is not important since only literal bytes will be emitted. - */ - - } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); - - /* If the WIN_INIT bytes after the end of the current data have never been - * written, then zero those bytes in order to avoid memory check reports of - * the use of uninitialized (or uninitialised as Julian writes) bytes by - * the longest match routines. Update the high water mark for the next - * time through here. WIN_INIT is set to MAX_MATCH since the longest match - * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. - */ - if (s->high_water < s->window_size) { - ulg curr = s->strstart + (ulg)(s->lookahead); - ulg init; - - if (s->high_water < curr) { - /* Previous high water mark below current data -- zero WIN_INIT - * bytes or up to end of window, whichever is less. - */ - init = s->window_size - curr; - if (init > WIN_INIT) - init = WIN_INIT; - zmemzero(s->window + curr, (unsigned)init); - s->high_water = curr + init; - } - else if (s->high_water < (ulg)curr + WIN_INIT) { - /* High water mark at or above current data, but below current data - * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up - * to end of window, whichever is less. - */ - init = (ulg)curr + WIN_INIT - s->high_water; - if (init > s->window_size - s->high_water) - init = s->window_size - s->high_water; - zmemzero(s->window + s->high_water, (unsigned)init); - s->high_water += init; - } - } -} - -/* =========================================================================== - * Flush the current block, with given end-of-file flag. - * IN assertion: strstart is set to the end of the current match. - */ -#define FLUSH_BLOCK_ONLY(s, last) { \ - _tr_flush_block(s, (s->block_start >= 0L ? \ - (charf *)&s->window[(unsigned)s->block_start] : \ - (charf *)Z_NULL), \ - (ulg)((long)s->strstart - s->block_start), \ - (last)); \ - s->block_start = s->strstart; \ - flush_pending(s->strm); \ - Tracev((stderr,"[FLUSH]")); \ -} - -/* Same but force premature exit if necessary. */ -#define FLUSH_BLOCK(s, last) { \ - FLUSH_BLOCK_ONLY(s, last); \ - if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \ -} - -/* =========================================================================== - * Copy without compression as much as possible from the input stream, return - * the current block state. - * This function does not insert new strings in the dictionary since - * uncompressible data is probably not useful. This function is used - * only for the level=0 compression option. - * NOTE: this function should be optimized to avoid extra copying from - * window to pending_buf. - */ -local block_state deflate_stored(s, flush) - deflate_state *s; - int flush; -{ - /* Stored blocks are limited to 0xffff bytes, pending_buf is limited - * to pending_buf_size, and each stored block has a 5 byte header: - */ - ulg max_block_size = 0xffff; - ulg max_start; - - if (max_block_size > s->pending_buf_size - 5) { - max_block_size = s->pending_buf_size - 5; - } - - /* Copy as much as possible from input to output: */ - for (;;) { - /* Fill the window as much as possible: */ - if (s->lookahead <= 1) { - - Assert(s->strstart < s->w_size+MAX_DIST(s) || - s->block_start >= (long)s->w_size, "slide too late"); - - fill_window(s); - if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more; - - if (s->lookahead == 0) break; /* flush the current block */ - } - Assert(s->block_start >= 0L, "block gone"); - - s->strstart += s->lookahead; - s->lookahead = 0; - - /* Emit a stored block if pending_buf will be full: */ - max_start = s->block_start + max_block_size; - if (s->strstart == 0 || (ulg)s->strstart >= max_start) { - /* strstart == 0 is possible when wraparound on 16-bit machine */ - s->lookahead = (uInt)(s->strstart - max_start); - s->strstart = (uInt)max_start; - FLUSH_BLOCK(s, 0); - } - /* Flush if we may have to slide, otherwise block_start may become - * negative and the data will be gone: - */ - if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) { - FLUSH_BLOCK(s, 0); - } - } - FLUSH_BLOCK(s, flush == Z_FINISH); - return flush == Z_FINISH ? finish_done : block_done; -} - -/* =========================================================================== - * Compress as much as possible from the input stream, return the current - * block state. - * This function does not perform lazy evaluation of matches and inserts - * new strings in the dictionary only for unmatched strings or for short - * matches. It is used only for the fast compression options. - */ -local block_state deflate_fast(s, flush) - deflate_state *s; - int flush; -{ - IPos hash_head; /* head of the hash chain */ - int bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s->lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) break; /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = NIL; - if (s->lookahead >= MIN_MATCH) { - INSERT_STRING(s, s->strstart, hash_head); - } - - /* Find the longest match, discarding those <= prev_length. - * At this point we have always match_length < MIN_MATCH - */ - if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s->match_length = longest_match (s, hash_head); - /* longest_match() sets match_start */ - } - if (s->match_length >= MIN_MATCH) { - check_match(s, s->strstart, s->match_start, s->match_length); - - _tr_tally_dist(s, s->strstart - s->match_start, - s->match_length - MIN_MATCH, bflush); - - s->lookahead -= s->match_length; - - /* Insert new strings in the hash table only if the match length - * is not too large. This saves time but degrades compression. - */ -#ifndef FASTEST - if (s->match_length <= s->max_insert_length && - s->lookahead >= MIN_MATCH) { - s->match_length--; /* string at strstart already in table */ - do { - s->strstart++; - INSERT_STRING(s, s->strstart, hash_head); - /* strstart never exceeds WSIZE-MAX_MATCH, so there are - * always MIN_MATCH bytes ahead. - */ - } while (--s->match_length != 0); - s->strstart++; - } else -#endif - { - s->strstart += s->match_length; - s->match_length = 0; - s->ins_h = s->window[s->strstart]; - UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]); -#if MIN_MATCH != 3 - Call UPDATE_HASH() MIN_MATCH-3 more times -#endif - /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not - * matter since it will be recomputed at next deflate call. - */ - } - } else { - /* No match, output a literal byte */ - Tracevv((stderr,"%c", s->window[s->strstart])); - _tr_tally_lit (s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - } - if (bflush) FLUSH_BLOCK(s, 0); - } - FLUSH_BLOCK(s, flush == Z_FINISH); - return flush == Z_FINISH ? finish_done : block_done; -} - -#ifndef FASTEST -/* =========================================================================== - * Same as above, but achieves better compression. We use a lazy - * evaluation for matches: a match is finally adopted only if there is - * no better match at the next window position. - */ -local block_state deflate_slow(s, flush) - deflate_state *s; - int flush; -{ - IPos hash_head; /* head of hash chain */ - int bflush; /* set if current block must be flushed */ - - /* Process the input block. */ - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the next match, plus MIN_MATCH bytes to insert the - * string following the next match. - */ - if (s->lookahead < MIN_LOOKAHEAD) { - fill_window(s); - if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) break; /* flush the current block */ - } - - /* Insert the string window[strstart .. strstart+2] in the - * dictionary, and set hash_head to the head of the hash chain: - */ - hash_head = NIL; - if (s->lookahead >= MIN_MATCH) { - INSERT_STRING(s, s->strstart, hash_head); - } - - /* Find the longest match, discarding those <= prev_length. - */ - s->prev_length = s->match_length, s->prev_match = s->match_start; - s->match_length = MIN_MATCH-1; - - if (hash_head != NIL && s->prev_length < s->max_lazy_match && - s->strstart - hash_head <= MAX_DIST(s)) { - /* To simplify the code, we prevent matches with the string - * of window index 0 (in particular we have to avoid a match - * of the string with itself at the start of the input file). - */ - s->match_length = longest_match (s, hash_head); - /* longest_match() sets match_start */ - - if (s->match_length <= 5 && (s->strategy == Z_FILTERED -#if TOO_FAR <= 32767 - || (s->match_length == MIN_MATCH && - s->strstart - s->match_start > TOO_FAR) -#endif - )) { - - /* If prev_match is also MIN_MATCH, match_start is garbage - * but we will ignore the current match anyway. - */ - s->match_length = MIN_MATCH-1; - } - } - /* If there was a match at the previous step and the current - * match is not better, output the previous match: - */ - if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) { - uInt max_insert = s->strstart + s->lookahead - MIN_MATCH; - /* Do not insert strings in hash table beyond this. */ - - check_match(s, s->strstart-1, s->prev_match, s->prev_length); - - _tr_tally_dist(s, s->strstart -1 - s->prev_match, - s->prev_length - MIN_MATCH, bflush); - - /* Insert in hash table all strings up to the end of the match. - * strstart-1 and strstart are already inserted. If there is not - * enough lookahead, the last two strings are not inserted in - * the hash table. - */ - s->lookahead -= s->prev_length-1; - s->prev_length -= 2; - do { - if (++s->strstart <= max_insert) { - INSERT_STRING(s, s->strstart, hash_head); - } - } while (--s->prev_length != 0); - s->match_available = 0; - s->match_length = MIN_MATCH-1; - s->strstart++; - - if (bflush) FLUSH_BLOCK(s, 0); - - } else if (s->match_available) { - /* If there was no match at the previous position, output a - * single literal. If there was a match but the current match - * is longer, truncate the previous match to a single literal. - */ - Tracevv((stderr,"%c", s->window[s->strstart-1])); - _tr_tally_lit(s, s->window[s->strstart-1], bflush); - if (bflush) { - FLUSH_BLOCK_ONLY(s, 0); - } - s->strstart++; - s->lookahead--; - if (s->strm->avail_out == 0) return need_more; - } else { - /* There is no previous match to compare with, wait for - * the next step to decide. - */ - s->match_available = 1; - s->strstart++; - s->lookahead--; - } - } - Assert (flush != Z_NO_FLUSH, "no flush?"); - if (s->match_available) { - Tracevv((stderr,"%c", s->window[s->strstart-1])); - _tr_tally_lit(s, s->window[s->strstart-1], bflush); - s->match_available = 0; - } - FLUSH_BLOCK(s, flush == Z_FINISH); - return flush == Z_FINISH ? finish_done : block_done; -} -#endif /* FASTEST */ - -/* =========================================================================== - * For Z_RLE, simply look for runs of bytes, generate matches only of distance - * one. Do not maintain a hash table. (It will be regenerated if this run of - * deflate switches away from Z_RLE.) - */ -local block_state deflate_rle(s, flush) - deflate_state *s; - int flush; -{ - int bflush; /* set if current block must be flushed */ - uInt prev; /* byte at distance one to match */ - Bytef *scan, *strend; /* scan goes up to strend for length of run */ - - for (;;) { - /* Make sure that we always have enough lookahead, except - * at the end of the input file. We need MAX_MATCH bytes - * for the longest encodable run. - */ - if (s->lookahead < MAX_MATCH) { - fill_window(s); - if (s->lookahead < MAX_MATCH && flush == Z_NO_FLUSH) { - return need_more; - } - if (s->lookahead == 0) break; /* flush the current block */ - } - - /* See how many times the previous byte repeats */ - s->match_length = 0; - if (s->lookahead >= MIN_MATCH && s->strstart > 0) { - scan = s->window + s->strstart - 1; - prev = *scan; - if (prev == *++scan && prev == *++scan && prev == *++scan) { - strend = s->window + s->strstart + MAX_MATCH; - do { - } while (prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - prev == *++scan && prev == *++scan && - scan < strend); - s->match_length = MAX_MATCH - (int)(strend - scan); - if (s->match_length > s->lookahead) - s->match_length = s->lookahead; - } - } - - /* Emit match if have run of MIN_MATCH or longer, else emit literal */ - if (s->match_length >= MIN_MATCH) { - check_match(s, s->strstart, s->strstart - 1, s->match_length); - - _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush); - - s->lookahead -= s->match_length; - s->strstart += s->match_length; - s->match_length = 0; - } else { - /* No match, output a literal byte */ - Tracevv((stderr,"%c", s->window[s->strstart])); - _tr_tally_lit (s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - } - if (bflush) FLUSH_BLOCK(s, 0); - } - FLUSH_BLOCK(s, flush == Z_FINISH); - return flush == Z_FINISH ? finish_done : block_done; -} - -/* =========================================================================== - * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. - * (It will be regenerated if this run of deflate switches away from Huffman.) - */ -local block_state deflate_huff(s, flush) - deflate_state *s; - int flush; -{ - int bflush; /* set if current block must be flushed */ - - for (;;) { - /* Make sure that we have a literal to write. */ - if (s->lookahead == 0) { - fill_window(s); - if (s->lookahead == 0) { - if (flush == Z_NO_FLUSH) - return need_more; - break; /* flush the current block */ - } - } - - /* Output a literal byte */ - s->match_length = 0; - Tracevv((stderr,"%c", s->window[s->strstart])); - _tr_tally_lit (s, s->window[s->strstart], bflush); - s->lookahead--; - s->strstart++; - if (bflush) FLUSH_BLOCK(s, 0); - } - FLUSH_BLOCK(s, flush == Z_FINISH); - return flush == Z_FINISH ? finish_done : block_done; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.h deleted file mode 100644 index 09cf4c4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/deflate.h +++ /dev/null @@ -1,342 +0,0 @@ -/* deflate.h -- internal compression state - * Copyright (C) 1995-2010 Jean-loup Gailly - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* @(#) $Id$ */ - -#ifndef DEFLATE_H -#define DEFLATE_H - -#include "zutil.h" - -/* define NO_GZIP when compiling if you want to disable gzip header and - trailer creation by deflate(). NO_GZIP would be used to avoid linking in - the crc code when it is not needed. For shared libraries, gzip encoding - should be left enabled. */ -#ifndef NO_GZIP -# define GZIP -#endif - -/* =========================================================================== - * Internal compression state. - */ - -#define LENGTH_CODES 29 -/* number of length codes, not counting the special END_BLOCK code */ - -#define LITERALS 256 -/* number of literal bytes 0..255 */ - -#define L_CODES (LITERALS+1+LENGTH_CODES) -/* number of Literal or Length codes, including the END_BLOCK code */ - -#define D_CODES 30 -/* number of distance codes */ - -#define BL_CODES 19 -/* number of codes used to transfer the bit lengths */ - -#define HEAP_SIZE (2*L_CODES+1) -/* maximum heap size */ - -#define MAX_BITS 15 -/* All codes must not exceed MAX_BITS bits */ - -#define INIT_STATE 42 -#define EXTRA_STATE 69 -#define NAME_STATE 73 -#define COMMENT_STATE 91 -#define HCRC_STATE 103 -#define BUSY_STATE 113 -#define FINISH_STATE 666 -/* Stream status */ - - -/* Data structure describing a single value and its code string. */ -typedef struct ct_data_s { - union { - ush freq; /* frequency count */ - ush code; /* bit string */ - } fc; - union { - ush dad; /* father node in Huffman tree */ - ush len; /* length of bit string */ - } dl; -} FAR ct_data; - -#define Freq fc.freq -#define Code fc.code -#define Dad dl.dad -#define Len dl.len - -typedef struct static_tree_desc_s static_tree_desc; - -typedef struct tree_desc_s { - ct_data *dyn_tree; /* the dynamic tree */ - int max_code; /* largest code with non zero frequency */ - static_tree_desc *stat_desc; /* the corresponding static tree */ -} FAR tree_desc; - -typedef ush Pos; -typedef Pos FAR Posf; -typedef unsigned IPos; - -/* A Pos is an index in the character window. We use short instead of int to - * save space in the various tables. IPos is used only for parameter passing. - */ - -typedef struct internal_state { - z_streamp strm; /* pointer back to this zlib stream */ - int status; /* as the name implies */ - Bytef *pending_buf; /* output still pending */ - ulg pending_buf_size; /* size of pending_buf */ - Bytef *pending_out; /* next pending byte to output to the stream */ - uInt pending; /* nb of bytes in the pending buffer */ - int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ - gz_headerp gzhead; /* gzip header information to write */ - uInt gzindex; /* where in extra, name, or comment */ - Byte method; /* STORED (for zip only) or DEFLATED */ - int last_flush; /* value of flush param for previous deflate call */ - - /* used by deflate.c: */ - - uInt w_size; /* LZ77 window size (32K by default) */ - uInt w_bits; /* log2(w_size) (8..16) */ - uInt w_mask; /* w_size - 1 */ - - Bytef *window; - /* Sliding window. Input bytes are read into the second half of the window, - * and move to the first half later to keep a dictionary of at least wSize - * bytes. With this organization, matches are limited to a distance of - * wSize-MAX_MATCH bytes, but this ensures that IO is always - * performed with a length multiple of the block size. Also, it limits - * the window size to 64K, which is quite useful on MSDOS. - * To do: use the user input buffer as sliding window. - */ - - ulg window_size; - /* Actual size of window: 2*wSize, except when the user input buffer - * is directly used as sliding window. - */ - - Posf *prev; - /* Link to older string with same hash index. To limit the size of this - * array to 64K, this link is maintained only for the last 32K strings. - * An index in this array is thus a window index modulo 32K. - */ - - Posf *head; /* Heads of the hash chains or NIL. */ - - uInt ins_h; /* hash index of string to be inserted */ - uInt hash_size; /* number of elements in hash table */ - uInt hash_bits; /* log2(hash_size) */ - uInt hash_mask; /* hash_size-1 */ - - uInt hash_shift; - /* Number of bits by which ins_h must be shifted at each input - * step. It must be such that after MIN_MATCH steps, the oldest - * byte no longer takes part in the hash key, that is: - * hash_shift * MIN_MATCH >= hash_bits - */ - - long block_start; - /* Window position at the beginning of the current output block. Gets - * negative when the window is moved backwards. - */ - - uInt match_length; /* length of best match */ - IPos prev_match; /* previous match */ - int match_available; /* set if previous match exists */ - uInt strstart; /* start of string to insert */ - uInt match_start; /* start of matching string */ - uInt lookahead; /* number of valid bytes ahead in window */ - - uInt prev_length; - /* Length of the best match at previous step. Matches not greater than this - * are discarded. This is used in the lazy match evaluation. - */ - - uInt max_chain_length; - /* To speed up deflation, hash chains are never searched beyond this - * length. A higher limit improves compression ratio but degrades the - * speed. - */ - - uInt max_lazy_match; - /* Attempt to find a better match only when the current match is strictly - * smaller than this value. This mechanism is used only for compression - * levels >= 4. - */ -# define max_insert_length max_lazy_match - /* Insert new strings in the hash table only if the match length is not - * greater than this length. This saves time but degrades compression. - * max_insert_length is used only for compression levels <= 3. - */ - - int level; /* compression level (1..9) */ - int strategy; /* favor or force Huffman coding*/ - - uInt good_match; - /* Use a faster search when the previous match is longer than this */ - - int nice_match; /* Stop searching when current match exceeds this */ - - /* used by trees.c: */ - /* Didn't use ct_data typedef below to supress compiler warning */ - struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ - struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ - struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ - - struct tree_desc_s l_desc; /* desc. for literal tree */ - struct tree_desc_s d_desc; /* desc. for distance tree */ - struct tree_desc_s bl_desc; /* desc. for bit length tree */ - - ush bl_count[MAX_BITS+1]; - /* number of codes at each bit length for an optimal tree */ - - int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ - int heap_len; /* number of elements in the heap */ - int heap_max; /* element of largest frequency */ - /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. - * The same heap array is used to build all trees. - */ - - uch depth[2*L_CODES+1]; - /* Depth of each subtree used as tie breaker for trees of equal frequency - */ - - uchf *l_buf; /* buffer for literals or lengths */ - - uInt lit_bufsize; - /* Size of match buffer for literals/lengths. There are 4 reasons for - * limiting lit_bufsize to 64K: - * - frequencies can be kept in 16 bit counters - * - if compression is not successful for the first block, all input - * data is still in the window so we can still emit a stored block even - * when input comes from standard input. (This can also be done for - * all blocks if lit_bufsize is not greater than 32K.) - * - if compression is not successful for a file smaller than 64K, we can - * even emit a stored file instead of a stored block (saving 5 bytes). - * This is applicable only for zip (not gzip or zlib). - * - creating new Huffman trees less frequently may not provide fast - * adaptation to changes in the input data statistics. (Take for - * example a binary file with poorly compressible code followed by - * a highly compressible string table.) Smaller buffer sizes give - * fast adaptation but have of course the overhead of transmitting - * trees more frequently. - * - I can't count above 4 - */ - - uInt last_lit; /* running index in l_buf */ - - ushf *d_buf; - /* Buffer for distances. To simplify the code, d_buf and l_buf have - * the same number of elements. To use different lengths, an extra flag - * array would be necessary. - */ - - ulg opt_len; /* bit length of current block with optimal trees */ - ulg static_len; /* bit length of current block with static trees */ - uInt matches; /* number of string matches in current block */ - int last_eob_len; /* bit length of EOB code for last block */ - -#ifdef DEBUG_ZLIB - ulg compressed_len; /* total bit length of compressed file mod 2^32 */ - ulg bits_sent; /* bit length of compressed data sent mod 2^32 */ -#endif - - ush bi_buf; - /* Output buffer. bits are inserted starting at the bottom (least - * significant bits). - */ - int bi_valid; - /* Number of valid bits in bi_buf. All bits above the last valid bit - * are always zero. - */ - - ulg high_water; - /* High water mark offset in window for initialized bytes -- bytes above - * this are set to zero in order to avoid memory check warnings when - * longest match routines access bytes past the input. This is then - * updated to the new high water mark. - */ - -} FAR deflate_state; - -/* Output a byte on the stream. - * IN assertion: there is enough room in pending_buf. - */ -#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);} - - -#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1) -/* Minimum amount of lookahead, except at the end of the input file. - * See deflate.c for comments about the MIN_MATCH+1. - */ - -#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD) -/* In order to simplify the code, particularly on 16 bit machines, match - * distances are limited to MAX_DIST instead of WSIZE. - */ - -#define WIN_INIT MAX_MATCH -/* Number of bytes after end of data in window to initialize in order to avoid - memory checker errors from longest match routines */ - - /* in trees.c */ -void ZLIB_INTERNAL _tr_init OF((deflate_state *s)); -int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc)); -void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf, - ulg stored_len, int last)); -void ZLIB_INTERNAL _tr_align OF((deflate_state *s)); -void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf, - ulg stored_len, int last)); - -#define d_code(dist) \ - ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)]) -/* Mapping from a distance to a distance code. dist is the distance - 1 and - * must not have side effects. _dist_code[256] and _dist_code[257] are never - * used. - */ - -#ifndef DEBUG_ZLIB -/* Inline versions of _tr_tally for speed: */ - -#if defined(GEN_TREES_H) || !defined(STDC) - extern uch ZLIB_INTERNAL _length_code[]; - extern uch ZLIB_INTERNAL _dist_code[]; -#else - extern const uch ZLIB_INTERNAL _length_code[]; - extern const uch ZLIB_INTERNAL _dist_code[]; -#endif - -# define _tr_tally_lit(s, c, flush) \ - { uch cc = (c); \ - s->d_buf[s->last_lit] = 0; \ - s->l_buf[s->last_lit++] = cc; \ - s->dyn_ltree[cc].Freq++; \ - flush = (s->last_lit == s->lit_bufsize-1); \ - } -# define _tr_tally_dist(s, distance, length, flush) \ - { uch len = (length); \ - ush dist = (distance); \ - s->d_buf[s->last_lit] = dist; \ - s->l_buf[s->last_lit++] = len; \ - dist--; \ - s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \ - s->dyn_dtree[d_code(dist)].Freq++; \ - flush = (s->last_lit == s->lit_bufsize-1); \ - } -#else -# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c) -# define _tr_tally_dist(s, distance, length, flush) \ - flush = _tr_tally(s, distance, length) -#endif - -#endif /* DEFLATE_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/infback.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/infback.c deleted file mode 100644 index af3a8c9..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/infback.c +++ /dev/null @@ -1,632 +0,0 @@ -/* infback.c -- inflate using a call-back interface - * Copyright (C) 1995-2009 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - This code is largely copied from inflate.c. Normally either infback.o or - inflate.o would be linked into an application--not both. The interface - with inffast.c is retained so that optimized assembler-coded versions of - inflate_fast() can be used with either inflate.c or infback.c. - */ - -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" - -/* function prototypes */ -local void fixedtables OF((struct inflate_state FAR *state)); - -/* - strm provides memory allocation functions in zalloc and zfree, or - Z_NULL to use the library memory allocation functions. - - windowBits is in the range 8..15, and window is a user-supplied - window and output buffer that is 2**windowBits bytes. - */ -int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size) -z_streamp strm; -int windowBits; -unsigned char FAR *window; -const char *version; -int stream_size; -{ - struct inflate_state FAR *state; - - if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || - stream_size != (int)(sizeof(z_stream))) - return Z_VERSION_ERROR; - if (strm == Z_NULL || window == Z_NULL || - windowBits < 8 || windowBits > 15) - return Z_STREAM_ERROR; - strm->msg = Z_NULL; /* in case we return an error */ - if (strm->zalloc == (alloc_func)0) { - strm->zalloc = zcalloc; - strm->opaque = (voidpf)0; - } - if (strm->zfree == (free_func)0) strm->zfree = zcfree; - state = (struct inflate_state FAR *)ZALLOC(strm, 1, - sizeof(struct inflate_state)); - if (state == Z_NULL) return Z_MEM_ERROR; - Tracev((stderr, "inflate: allocated\n")); - strm->state = (struct internal_state FAR *)state; - state->dmax = 32768U; - state->wbits = windowBits; - state->wsize = 1U << windowBits; - state->window = window; - state->wnext = 0; - state->whave = 0; - return Z_OK; -} - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -local void fixedtables(state) -struct inflate_state FAR *state; -{ -#ifdef BUILDFIXED - static int virgin = 1; - static code *lenfix, *distfix; - static code fixed[544]; - - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - unsigned sym, bits; - static code *next; - - /* literal/length table */ - sym = 0; - while (sym < 144) state->lens[sym++] = 8; - while (sym < 256) state->lens[sym++] = 9; - while (sym < 280) state->lens[sym++] = 7; - while (sym < 288) state->lens[sym++] = 8; - next = fixed; - lenfix = next; - bits = 9; - inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); - - /* distance table */ - sym = 0; - while (sym < 32) state->lens[sym++] = 5; - distfix = next; - bits = 5; - inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); - - /* do this just once */ - virgin = 0; - } -#else /* !BUILDFIXED */ -# include "inffixed.h" -#endif /* BUILDFIXED */ - state->lencode = lenfix; - state->lenbits = 9; - state->distcode = distfix; - state->distbits = 5; -} - -/* Macros for inflateBack(): */ - -/* Load returned state from inflate_fast() */ -#define LOAD() \ - do { \ - put = strm->next_out; \ - left = strm->avail_out; \ - next = strm->next_in; \ - have = strm->avail_in; \ - hold = state->hold; \ - bits = state->bits; \ - } while (0) - -/* Set state from registers for inflate_fast() */ -#define RESTORE() \ - do { \ - strm->next_out = put; \ - strm->avail_out = left; \ - strm->next_in = next; \ - strm->avail_in = have; \ - state->hold = hold; \ - state->bits = bits; \ - } while (0) - -/* Clear the input bit accumulator */ -#define INITBITS() \ - do { \ - hold = 0; \ - bits = 0; \ - } while (0) - -/* Assure that some input is available. If input is requested, but denied, - then return a Z_BUF_ERROR from inflateBack(). */ -#define PULL() \ - do { \ - if (have == 0) { \ - have = in(in_desc, &next); \ - if (have == 0) { \ - next = Z_NULL; \ - ret = Z_BUF_ERROR; \ - goto inf_leave; \ - } \ - } \ - } while (0) - -/* Get a byte of input into the bit accumulator, or return from inflateBack() - with an error if there is no input available. */ -#define PULLBYTE() \ - do { \ - PULL(); \ - have--; \ - hold += (unsigned long)(*next++) << bits; \ - bits += 8; \ - } while (0) - -/* Assure that there are at least n bits in the bit accumulator. If there is - not enough available input to do that, then return from inflateBack() with - an error. */ -#define NEEDBITS(n) \ - do { \ - while (bits < (unsigned)(n)) \ - PULLBYTE(); \ - } while (0) - -/* Return the low n bits of the bit accumulator (n < 16) */ -#define BITS(n) \ - ((unsigned)hold & ((1U << (n)) - 1)) - -/* Remove n bits from the bit accumulator */ -#define DROPBITS(n) \ - do { \ - hold >>= (n); \ - bits -= (unsigned)(n); \ - } while (0) - -/* Remove zero to seven bits as needed to go to a byte boundary */ -#define BYTEBITS() \ - do { \ - hold >>= bits & 7; \ - bits -= bits & 7; \ - } while (0) - -/* Assure that some output space is available, by writing out the window - if it's full. If the write fails, return from inflateBack() with a - Z_BUF_ERROR. */ -#define ROOM() \ - do { \ - if (left == 0) { \ - put = state->window; \ - left = state->wsize; \ - state->whave = left; \ - if (out(out_desc, put, left)) { \ - ret = Z_BUF_ERROR; \ - goto inf_leave; \ - } \ - } \ - } while (0) - -/* - strm provides the memory allocation functions and window buffer on input, - and provides information on the unused input on return. For Z_DATA_ERROR - returns, strm will also provide an error message. - - in() and out() are the call-back input and output functions. When - inflateBack() needs more input, it calls in(). When inflateBack() has - filled the window with output, or when it completes with data in the - window, it calls out() to write out the data. The application must not - change the provided input until in() is called again or inflateBack() - returns. The application must not change the window/output buffer until - inflateBack() returns. - - in() and out() are called with a descriptor parameter provided in the - inflateBack() call. This parameter can be a structure that provides the - information required to do the read or write, as well as accumulated - information on the input and output such as totals and check values. - - in() should return zero on failure. out() should return non-zero on - failure. If either in() or out() fails, than inflateBack() returns a - Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it - was in() or out() that caused in the error. Otherwise, inflateBack() - returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format - error, or Z_MEM_ERROR if it could not allocate memory for the state. - inflateBack() can also return Z_STREAM_ERROR if the input parameters - are not correct, i.e. strm is Z_NULL or the state was not initialized. - */ -int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc) -z_streamp strm; -in_func in; -void FAR *in_desc; -out_func out; -void FAR *out_desc; -{ - struct inflate_state FAR *state; - unsigned char FAR *next; /* next input */ - unsigned char FAR *put; /* next output */ - unsigned have, left; /* available input and output */ - unsigned long hold; /* bit buffer */ - unsigned bits; /* bits in bit buffer */ - unsigned copy; /* number of stored or match bytes to copy */ - unsigned char FAR *from; /* where to copy match bytes from */ - code here; /* current decoding table entry */ - code last; /* parent table entry */ - unsigned len; /* length to copy for repeats, bits to drop */ - int ret; /* return code */ - static const unsigned short order[19] = /* permutation of code lengths */ - {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; - - /* Check that the strm exists and that the state was initialized */ - if (strm == Z_NULL || strm->state == Z_NULL) - return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - - /* Reset the state */ - strm->msg = Z_NULL; - state->mode = TYPE; - state->last = 0; - state->whave = 0; - next = strm->next_in; - have = next != Z_NULL ? strm->avail_in : 0; - hold = 0; - bits = 0; - put = state->window; - left = state->wsize; - - /* Inflate until end of block marked as last */ - for (;;) - switch (state->mode) { - case TYPE: - /* determine and dispatch block type */ - if (state->last) { - BYTEBITS(); - state->mode = DONE; - break; - } - NEEDBITS(3); - state->last = BITS(1); - DROPBITS(1); - switch (BITS(2)) { - case 0: /* stored block */ - Tracev((stderr, "inflate: stored block%s\n", - state->last ? " (last)" : "")); - state->mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - Tracev((stderr, "inflate: fixed codes block%s\n", - state->last ? " (last)" : "")); - state->mode = LEN; /* decode codes */ - break; - case 2: /* dynamic block */ - Tracev((stderr, "inflate: dynamic codes block%s\n", - state->last ? " (last)" : "")); - state->mode = TABLE; - break; - case 3: - strm->msg = (char *)"invalid block type"; - state->mode = BAD; - } - DROPBITS(2); - break; - - case STORED: - /* get and verify stored block length */ - BYTEBITS(); /* go to byte boundary */ - NEEDBITS(32); - if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { - strm->msg = (char *)"invalid stored block lengths"; - state->mode = BAD; - break; - } - state->length = (unsigned)hold & 0xffff; - Tracev((stderr, "inflate: stored length %u\n", - state->length)); - INITBITS(); - - /* copy stored block from input to output */ - while (state->length != 0) { - copy = state->length; - PULL(); - ROOM(); - if (copy > have) copy = have; - if (copy > left) copy = left; - zmemcpy(put, next, copy); - have -= copy; - next += copy; - left -= copy; - put += copy; - state->length -= copy; - } - Tracev((stderr, "inflate: stored end\n")); - state->mode = TYPE; - break; - - case TABLE: - /* get dynamic table entries descriptor */ - NEEDBITS(14); - state->nlen = BITS(5) + 257; - DROPBITS(5); - state->ndist = BITS(5) + 1; - DROPBITS(5); - state->ncode = BITS(4) + 4; - DROPBITS(4); -#ifndef PKZIP_BUG_WORKAROUND - if (state->nlen > 286 || state->ndist > 30) { - strm->msg = (char *)"too many length or distance symbols"; - state->mode = BAD; - break; - } -#endif - Tracev((stderr, "inflate: table sizes ok\n")); - - /* get code length code lengths (not a typo) */ - state->have = 0; - while (state->have < state->ncode) { - NEEDBITS(3); - state->lens[order[state->have++]] = (unsigned short)BITS(3); - DROPBITS(3); - } - while (state->have < 19) - state->lens[order[state->have++]] = 0; - state->next = state->codes; - state->lencode = (code const FAR *)(state->next); - state->lenbits = 7; - ret = inflate_table(CODES, state->lens, 19, &(state->next), - &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid code lengths set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: code lengths ok\n")); - - /* get length and distance code code lengths */ - state->have = 0; - while (state->have < state->nlen + state->ndist) { - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if (here.val < 16) { - NEEDBITS(here.bits); - DROPBITS(here.bits); - state->lens[state->have++] = here.val; - } - else { - if (here.val == 16) { - NEEDBITS(here.bits + 2); - DROPBITS(here.bits); - if (state->have == 0) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - len = (unsigned)(state->lens[state->have - 1]); - copy = 3 + BITS(2); - DROPBITS(2); - } - else if (here.val == 17) { - NEEDBITS(here.bits + 3); - DROPBITS(here.bits); - len = 0; - copy = 3 + BITS(3); - DROPBITS(3); - } - else { - NEEDBITS(here.bits + 7); - DROPBITS(here.bits); - len = 0; - copy = 11 + BITS(7); - DROPBITS(7); - } - if (state->have + copy > state->nlen + state->ndist) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - while (copy--) - state->lens[state->have++] = (unsigned short)len; - } - } - - /* handle error breaks in while */ - if (state->mode == BAD) break; - - /* check for end-of-block code (better have one) */ - if (state->lens[256] == 0) { - strm->msg = (char *)"invalid code -- missing end-of-block"; - state->mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state->next = state->codes; - state->lencode = (code const FAR *)(state->next); - state->lenbits = 9; - ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), - &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid literal/lengths set"; - state->mode = BAD; - break; - } - state->distcode = (code const FAR *)(state->next); - state->distbits = 6; - ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, - &(state->next), &(state->distbits), state->work); - if (ret) { - strm->msg = (char *)"invalid distances set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: codes ok\n")); - state->mode = LEN; - - case LEN: - /* use inflate_fast() if we have enough input and output */ - if (have >= 6 && left >= 258) { - RESTORE(); - if (state->whave < state->wsize) - state->whave = state->wsize - left; - inflate_fast(strm, state->wsize); - LOAD(); - break; - } - - /* get a literal, length, or end-of-block code */ - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if (here.op && (here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->lencode[last.val + - (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)(last.bits + here.bits) <= bits) break; - PULLBYTE(); - } - DROPBITS(last.bits); - } - DROPBITS(here.bits); - state->length = (unsigned)here.val; - - /* process literal */ - if (here.op == 0) { - Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here.val)); - ROOM(); - *put++ = (unsigned char)(state->length); - left--; - state->mode = LEN; - break; - } - - /* process end of block */ - if (here.op & 32) { - Tracevv((stderr, "inflate: end of block\n")); - state->mode = TYPE; - break; - } - - /* invalid code */ - if (here.op & 64) { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - - /* length code -- get extra bits, if any */ - state->extra = (unsigned)(here.op) & 15; - if (state->extra != 0) { - NEEDBITS(state->extra); - state->length += BITS(state->extra); - DROPBITS(state->extra); - } - Tracevv((stderr, "inflate: length %u\n", state->length)); - - /* get distance code */ - for (;;) { - here = state->distcode[BITS(state->distbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if ((here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->distcode[last.val + - (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)(last.bits + here.bits) <= bits) break; - PULLBYTE(); - } - DROPBITS(last.bits); - } - DROPBITS(here.bits); - if (here.op & 64) { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - state->offset = (unsigned)here.val; - - /* get distance extra bits, if any */ - state->extra = (unsigned)(here.op) & 15; - if (state->extra != 0) { - NEEDBITS(state->extra); - state->offset += BITS(state->extra); - DROPBITS(state->extra); - } - if (state->offset > state->wsize - (state->whave < state->wsize ? - left : 0)) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } - Tracevv((stderr, "inflate: distance %u\n", state->offset)); - - /* copy match from window to output */ - do { - ROOM(); - copy = state->wsize - state->offset; - if (copy < left) { - from = put + copy; - copy = left - copy; - } - else { - from = put - state->offset; - copy = left; - } - if (copy > state->length) copy = state->length; - state->length -= copy; - left -= copy; - do { - *put++ = *from++; - } while (--copy); - } while (state->length != 0); - break; - - case DONE: - /* inflate stream terminated properly -- write leftover output */ - ret = Z_STREAM_END; - if (left < state->wsize) { - if (out(out_desc, state->window, state->wsize - left)) - ret = Z_BUF_ERROR; - } - goto inf_leave; - - case BAD: - ret = Z_DATA_ERROR; - goto inf_leave; - - default: /* can't happen, but makes compilers happy */ - ret = Z_STREAM_ERROR; - goto inf_leave; - } - - /* Return unused input */ - inf_leave: - strm->next_in = next; - strm->avail_in = have; - return ret; -} - -int ZEXPORT inflateBackEnd(strm) -z_streamp strm; -{ - if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) - return Z_STREAM_ERROR; - ZFREE(strm, strm->state); - strm->state = Z_NULL; - Tracev((stderr, "inflate: end\n")); - return Z_OK; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.c deleted file mode 100644 index 2f1d60b..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.c +++ /dev/null @@ -1,340 +0,0 @@ -/* inffast.c -- fast decoding - * Copyright (C) 1995-2008, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" - -#ifndef ASMINF - -/* Allow machine dependent optimization for post-increment or pre-increment. - Based on testing to date, - Pre-increment preferred for: - - PowerPC G3 (Adler) - - MIPS R5000 (Randers-Pehrson) - Post-increment preferred for: - - none - No measurable difference: - - Pentium III (Anderson) - - M68060 (Nikl) - */ -#ifdef POSTINC -# define OFF 0 -# define PUP(a) *(a)++ -#else -# define OFF 1 -# define PUP(a) *++(a) -#endif - -/* - Decode literal, length, and distance codes and write out the resulting - literal and match bytes until either not enough input or output is - available, an end-of-block is encountered, or a data error is encountered. - When large enough input and output buffers are supplied to inflate(), for - example, a 16K input buffer and a 64K output buffer, more than 95% of the - inflate execution time is spent in this routine. - - Entry assumptions: - - state->mode == LEN - strm->avail_in >= 6 - strm->avail_out >= 258 - start >= strm->avail_out - state->bits < 8 - - On return, state->mode is one of: - - LEN -- ran out of enough output space or enough available input - TYPE -- reached end of block code, inflate() to interpret next block - BAD -- error in block data - - Notes: - - - The maximum input bits used by a length/distance pair is 15 bits for the - length code, 5 bits for the length extra, 15 bits for the distance code, - and 13 bits for the distance extra. This totals 48 bits, or six bytes. - Therefore if strm->avail_in >= 6, then there is enough input to avoid - checking for available input while decoding. - - - The maximum bytes that a single length/distance pair can output is 258 - bytes, which is the maximum length that can be coded. inflate_fast() - requires strm->avail_out >= 258 for each loop to avoid checking for - output space. - */ -void ZLIB_INTERNAL inflate_fast(strm, start) -z_streamp strm; -unsigned start; /* inflate()'s starting value for strm->avail_out */ -{ - struct inflate_state FAR *state; - unsigned char FAR *in; /* local strm->next_in */ - unsigned char FAR *last; /* while in < last, enough input available */ - unsigned char FAR *out; /* local strm->next_out */ - unsigned char FAR *beg; /* inflate()'s initial strm->next_out */ - unsigned char FAR *end; /* while out < end, enough space available */ -#ifdef INFLATE_STRICT - unsigned dmax; /* maximum distance from zlib header */ -#endif - unsigned wsize; /* window size or zero if not using window */ - unsigned whave; /* valid bytes in the window */ - unsigned wnext; /* window write index */ - unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */ - unsigned long hold; /* local strm->hold */ - unsigned bits; /* local strm->bits */ - code const FAR *lcode; /* local strm->lencode */ - code const FAR *dcode; /* local strm->distcode */ - unsigned lmask; /* mask for first level of length codes */ - unsigned dmask; /* mask for first level of distance codes */ - code here; /* retrieved table entry */ - unsigned op; /* code bits, operation, extra bits, or */ - /* window position, window bytes to copy */ - unsigned len; /* match length, unused bytes */ - unsigned dist; /* match distance */ - unsigned char FAR *from; /* where to copy match from */ - - /* copy state to local variables */ - state = (struct inflate_state FAR *)strm->state; - in = strm->next_in - OFF; - last = in + (strm->avail_in - 5); - out = strm->next_out - OFF; - beg = out - (start - strm->avail_out); - end = out + (strm->avail_out - 257); -#ifdef INFLATE_STRICT - dmax = state->dmax; -#endif - wsize = state->wsize; - whave = state->whave; - wnext = state->wnext; - window = state->window; - hold = state->hold; - bits = state->bits; - lcode = state->lencode; - dcode = state->distcode; - lmask = (1U << state->lenbits) - 1; - dmask = (1U << state->distbits) - 1; - - /* decode literals and length/distances until end-of-block or not enough - input data or output space */ - do { - if (bits < 15) { - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - } - here = lcode[hold & lmask]; - dolen: - op = (unsigned)(here.bits); - hold >>= op; - bits -= op; - op = (unsigned)(here.op); - if (op == 0) { /* literal */ - Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here.val)); - PUP(out) = (unsigned char)(here.val); - } - else if (op & 16) { /* length base */ - len = (unsigned)(here.val); - op &= 15; /* number of extra bits */ - if (op) { - if (bits < op) { - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - } - len += (unsigned)hold & ((1U << op) - 1); - hold >>= op; - bits -= op; - } - Tracevv((stderr, "inflate: length %u\n", len)); - if (bits < 15) { - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - } - here = dcode[hold & dmask]; - dodist: - op = (unsigned)(here.bits); - hold >>= op; - bits -= op; - op = (unsigned)(here.op); - if (op & 16) { /* distance base */ - dist = (unsigned)(here.val); - op &= 15; /* number of extra bits */ - if (bits < op) { - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - if (bits < op) { - hold += (unsigned long)(PUP(in)) << bits; - bits += 8; - } - } - dist += (unsigned)hold & ((1U << op) - 1); -#ifdef INFLATE_STRICT - if (dist > dmax) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#endif - hold >>= op; - bits -= op; - Tracevv((stderr, "inflate: distance %u\n", dist)); - op = (unsigned)(out - beg); /* max distance in output */ - if (dist > op) { /* see if copy from window */ - op = dist - op; /* distance back in window */ - if (op > whave) { - if (state->sane) { - strm->msg = - (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - if (len <= op - whave) { - do { - PUP(out) = 0; - } while (--len); - continue; - } - len -= op - whave; - do { - PUP(out) = 0; - } while (--op > whave); - if (op == 0) { - from = out - dist; - do { - PUP(out) = PUP(from); - } while (--len); - continue; - } -#endif - } - from = window - OFF; - if (wnext == 0) { /* very common case */ - from += wsize - op; - if (op < len) { /* some from window */ - len -= op; - do { - PUP(out) = PUP(from); - } while (--op); - from = out - dist; /* rest from output */ - } - } - else if (wnext < op) { /* wrap around window */ - from += wsize + wnext - op; - op -= wnext; - if (op < len) { /* some from end of window */ - len -= op; - do { - PUP(out) = PUP(from); - } while (--op); - from = window - OFF; - if (wnext < len) { /* some from start of window */ - op = wnext; - len -= op; - do { - PUP(out) = PUP(from); - } while (--op); - from = out - dist; /* rest from output */ - } - } - } - else { /* contiguous in window */ - from += wnext - op; - if (op < len) { /* some from window */ - len -= op; - do { - PUP(out) = PUP(from); - } while (--op); - from = out - dist; /* rest from output */ - } - } - while (len > 2) { - PUP(out) = PUP(from); - PUP(out) = PUP(from); - PUP(out) = PUP(from); - len -= 3; - } - if (len) { - PUP(out) = PUP(from); - if (len > 1) - PUP(out) = PUP(from); - } - } - else { - from = out - dist; /* copy direct from output */ - do { /* minimum length is three */ - PUP(out) = PUP(from); - PUP(out) = PUP(from); - PUP(out) = PUP(from); - len -= 3; - } while (len > 2); - if (len) { - PUP(out) = PUP(from); - if (len > 1) - PUP(out) = PUP(from); - } - } - } - else if ((op & 64) == 0) { /* 2nd level distance code */ - here = dcode[here.val + (hold & ((1U << op) - 1))]; - goto dodist; - } - else { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - } - else if ((op & 64) == 0) { /* 2nd level length code */ - here = lcode[here.val + (hold & ((1U << op) - 1))]; - goto dolen; - } - else if (op & 32) { /* end-of-block */ - Tracevv((stderr, "inflate: end of block\n")); - state->mode = TYPE; - break; - } - else { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - } while (in < last && out < end); - - /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ - len = bits >> 3; - in -= len; - bits -= len << 3; - hold &= (1U << bits) - 1; - - /* update state and return */ - strm->next_in = in + OFF; - strm->next_out = out + OFF; - strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last)); - strm->avail_out = (unsigned)(out < end ? - 257 + (end - out) : 257 - (out - end)); - state->hold = hold; - state->bits = bits; - return; -} - -/* - inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe): - - Using bit fields for code structure - - Different op definition to avoid & for extra bits (do & for table bits) - - Three separate decoding do-loops for direct, window, and wnext == 0 - - Special case for distance > 1 copies to do overlapped load and store copy - - Explicit branch predictions (based on measured branch probabilities) - - Deferring match copy and interspersed it with decoding subsequent codes - - Swapping literal/length else - - Swapping window/direct else - - Larger unrolled copy loops (three is about right) - - Moving len -= 3 statement into middle of loop - */ - -#endif /* !ASMINF */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.h deleted file mode 100644 index e5c1aa4..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffast.h +++ /dev/null @@ -1,11 +0,0 @@ -/* inffast.h -- header to use inffast.c - * Copyright (C) 1995-2003, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start)); diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffixed.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffixed.h deleted file mode 100644 index 75ed4b5..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inffixed.h +++ /dev/null @@ -1,94 +0,0 @@ - /* inffixed.h -- table for decoding fixed codes - * Generated automatically by makefixed(). - */ - - /* WARNING: this file should *not* be used by applications. It - is part of the implementation of the compression library and - is subject to change. Applications should only use zlib.h. - */ - - static const code lenfix[512] = { - {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48}, - {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128}, - {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59}, - {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176}, - {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20}, - {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100}, - {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8}, - {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216}, - {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76}, - {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114}, - {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2}, - {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148}, - {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42}, - {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86}, - {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15}, - {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236}, - {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62}, - {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142}, - {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31}, - {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162}, - {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25}, - {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105}, - {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4}, - {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202}, - {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69}, - {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125}, - {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13}, - {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195}, - {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35}, - {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91}, - {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19}, - {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246}, - {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55}, - {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135}, - {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99}, - {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190}, - {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16}, - {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96}, - {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6}, - {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209}, - {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72}, - {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116}, - {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4}, - {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153}, - {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44}, - {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82}, - {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11}, - {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229}, - {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58}, - {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138}, - {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51}, - {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173}, - {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30}, - {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110}, - {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0}, - {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195}, - {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65}, - {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121}, - {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9}, - {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258}, - {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37}, - {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93}, - {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23}, - {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251}, - {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51}, - {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131}, - {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67}, - {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183}, - {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23}, - {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103}, - {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9}, - {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223}, - {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79}, - {0,9,255} - }; - - static const code distfix[32] = { - {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025}, - {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193}, - {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385}, - {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577}, - {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073}, - {22,5,193},{64,5,0} - }; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.c deleted file mode 100644 index a8431ab..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.c +++ /dev/null @@ -1,1480 +0,0 @@ -/* inflate.c -- zlib decompression - * Copyright (C) 1995-2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * Change history: - * - * 1.2.beta0 24 Nov 2002 - * - First version -- complete rewrite of inflate to simplify code, avoid - * creation of window when not needed, minimize use of window when it is - * needed, make inffast.c even faster, implement gzip decoding, and to - * improve code readability and style over the previous zlib inflate code - * - * 1.2.beta1 25 Nov 2002 - * - Use pointers for available input and output checking in inffast.c - * - Remove input and output counters in inffast.c - * - Change inffast.c entry and loop from avail_in >= 7 to >= 6 - * - Remove unnecessary second byte pull from length extra in inffast.c - * - Unroll direct copy to three copies per loop in inffast.c - * - * 1.2.beta2 4 Dec 2002 - * - Change external routine names to reduce potential conflicts - * - Correct filename to inffixed.h for fixed tables in inflate.c - * - Make hbuf[] unsigned char to match parameter type in inflate.c - * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset) - * to avoid negation problem on Alphas (64 bit) in inflate.c - * - * 1.2.beta3 22 Dec 2002 - * - Add comments on state->bits assertion in inffast.c - * - Add comments on op field in inftrees.h - * - Fix bug in reuse of allocated window after inflateReset() - * - Remove bit fields--back to byte structure for speed - * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths - * - Change post-increments to pre-increments in inflate_fast(), PPC biased? - * - Add compile time option, POSTINC, to use post-increments instead (Intel?) - * - Make MATCH copy in inflate() much faster for when inflate_fast() not used - * - Use local copies of stream next and avail values, as well as local bit - * buffer and bit count in inflate()--for speed when inflate_fast() not used - * - * 1.2.beta4 1 Jan 2003 - * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings - * - Move a comment on output buffer sizes from inffast.c to inflate.c - * - Add comments in inffast.c to introduce the inflate_fast() routine - * - Rearrange window copies in inflate_fast() for speed and simplification - * - Unroll last copy for window match in inflate_fast() - * - Use local copies of window variables in inflate_fast() for speed - * - Pull out common wnext == 0 case for speed in inflate_fast() - * - Make op and len in inflate_fast() unsigned for consistency - * - Add FAR to lcode and dcode declarations in inflate_fast() - * - Simplified bad distance check in inflate_fast() - * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new - * source file infback.c to provide a call-back interface to inflate for - * programs like gzip and unzip -- uses window as output buffer to avoid - * window copying - * - * 1.2.beta5 1 Jan 2003 - * - Improved inflateBack() interface to allow the caller to provide initial - * input in strm. - * - Fixed stored blocks bug in inflateBack() - * - * 1.2.beta6 4 Jan 2003 - * - Added comments in inffast.c on effectiveness of POSTINC - * - Typecasting all around to reduce compiler warnings - * - Changed loops from while (1) or do {} while (1) to for (;;), again to - * make compilers happy - * - Changed type of window in inflateBackInit() to unsigned char * - * - * 1.2.beta7 27 Jan 2003 - * - Changed many types to unsigned or unsigned short to avoid warnings - * - Added inflateCopy() function - * - * 1.2.0 9 Mar 2003 - * - Changed inflateBack() interface to provide separate opaque descriptors - * for the in() and out() functions - * - Changed inflateBack() argument and in_func typedef to swap the length - * and buffer address return values for the input function - * - Check next_in and next_out for Z_NULL on entry to inflate() - * - * The history for versions after 1.2.0 are in ChangeLog in zlib distribution. - */ - -#include "zutil.h" -#include "inftrees.h" -#include "inflate.h" -#include "inffast.h" - -#ifdef MAKEFIXED -# ifndef BUILDFIXED -# define BUILDFIXED -# endif -#endif - -/* function prototypes */ -local void fixedtables OF((struct inflate_state FAR *state)); -local int updatewindow OF((z_streamp strm, unsigned out)); -#ifdef BUILDFIXED - void makefixed OF((void)); -#endif -local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf, - unsigned len)); - -int ZEXPORT inflateReset(strm) -z_streamp strm; -{ - struct inflate_state FAR *state; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - strm->total_in = strm->total_out = state->total = 0; - strm->msg = Z_NULL; - strm->adler = 1; /* to support ill-conceived Java test suite */ - state->mode = HEAD; - state->last = 0; - state->havedict = 0; - state->dmax = 32768U; - state->head = Z_NULL; - state->wsize = 0; - state->whave = 0; - state->wnext = 0; - state->hold = 0; - state->bits = 0; - state->lencode = state->distcode = state->next = state->codes; - state->sane = 1; - state->back = -1; - Tracev((stderr, "inflate: reset\n")); - return Z_OK; -} - -int ZEXPORT inflateReset2(strm, windowBits) -z_streamp strm; -int windowBits; -{ - int wrap; - struct inflate_state FAR *state; - - /* get the state */ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - - /* extract wrap request from windowBits parameter */ - if (windowBits < 0) { - wrap = 0; - windowBits = -windowBits; - } - else { - wrap = (windowBits >> 4) + 1; -#ifdef GUNZIP - if (windowBits < 48) - windowBits &= 15; -#endif - } - - /* set number of window bits, free window if different */ - if (windowBits && (windowBits < 8 || windowBits > 15)) - return Z_STREAM_ERROR; - if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) { - ZFREE(strm, state->window); - state->window = Z_NULL; - } - - /* update state and reset the rest of it */ - state->wrap = wrap; - state->wbits = (unsigned)windowBits; - return inflateReset(strm); -} - -int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size) -z_streamp strm; -int windowBits; -const char *version; -int stream_size; -{ - int ret; - struct inflate_state FAR *state; - - if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || - stream_size != (int)(sizeof(z_stream))) - return Z_VERSION_ERROR; - if (strm == Z_NULL) return Z_STREAM_ERROR; - strm->msg = Z_NULL; /* in case we return an error */ - if (strm->zalloc == (alloc_func)0) { - strm->zalloc = zcalloc; - strm->opaque = (voidpf)0; - } - if (strm->zfree == (free_func)0) strm->zfree = zcfree; - state = (struct inflate_state FAR *) - ZALLOC(strm, 1, sizeof(struct inflate_state)); - if (state == Z_NULL) return Z_MEM_ERROR; - Tracev((stderr, "inflate: allocated\n")); - strm->state = (struct internal_state FAR *)state; - state->window = Z_NULL; - ret = inflateReset2(strm, windowBits); - if (ret != Z_OK) { - ZFREE(strm, state); - strm->state = Z_NULL; - } - return ret; -} - -int ZEXPORT inflateInit_(strm, version, stream_size) -z_streamp strm; -const char *version; -int stream_size; -{ - return inflateInit2_(strm, DEF_WBITS, version, stream_size); -} - -int ZEXPORT inflatePrime(strm, bits, value) -z_streamp strm; -int bits; -int value; -{ - struct inflate_state FAR *state; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - if (bits < 0) { - state->hold = 0; - state->bits = 0; - return Z_OK; - } - if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR; - value &= (1L << bits) - 1; - state->hold += value << state->bits; - state->bits += bits; - return Z_OK; -} - -/* - Return state with length and distance decoding tables and index sizes set to - fixed code decoding. Normally this returns fixed tables from inffixed.h. - If BUILDFIXED is defined, then instead this routine builds the tables the - first time it's called, and returns those tables the first time and - thereafter. This reduces the size of the code by about 2K bytes, in - exchange for a little execution time. However, BUILDFIXED should not be - used for threaded applications, since the rewriting of the tables and virgin - may not be thread-safe. - */ -local void fixedtables(state) -struct inflate_state FAR *state; -{ -#ifdef BUILDFIXED - static int virgin = 1; - static code *lenfix, *distfix; - static code fixed[544]; - - /* build fixed huffman tables if first call (may not be thread safe) */ - if (virgin) { - unsigned sym, bits; - static code *next; - - /* literal/length table */ - sym = 0; - while (sym < 144) state->lens[sym++] = 8; - while (sym < 256) state->lens[sym++] = 9; - while (sym < 280) state->lens[sym++] = 7; - while (sym < 288) state->lens[sym++] = 8; - next = fixed; - lenfix = next; - bits = 9; - inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); - - /* distance table */ - sym = 0; - while (sym < 32) state->lens[sym++] = 5; - distfix = next; - bits = 5; - inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); - - /* do this just once */ - virgin = 0; - } -#else /* !BUILDFIXED */ -# include "inffixed.h" -#endif /* BUILDFIXED */ - state->lencode = lenfix; - state->lenbits = 9; - state->distcode = distfix; - state->distbits = 5; -} - -#ifdef MAKEFIXED -#include <stdio.h> - -/* - Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also - defines BUILDFIXED, so the tables are built on the fly. makefixed() writes - those tables to stdout, which would be piped to inffixed.h. A small program - can simply call makefixed to do this: - - void makefixed(void); - - int main(void) - { - makefixed(); - return 0; - } - - Then that can be linked with zlib built with MAKEFIXED defined and run: - - a.out > inffixed.h - */ -void makefixed() -{ - unsigned low, size; - struct inflate_state state; - - fixedtables(&state); - puts(" /* inffixed.h -- table for decoding fixed codes"); - puts(" * Generated automatically by makefixed()."); - puts(" */"); - puts(""); - puts(" /* WARNING: this file should *not* be used by applications."); - puts(" It is part of the implementation of this library and is"); - puts(" subject to change. Applications should only use zlib.h."); - puts(" */"); - puts(""); - size = 1U << 9; - printf(" static const code lenfix[%u] = {", size); - low = 0; - for (;;) { - if ((low % 7) == 0) printf("\n "); - printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits, - state.lencode[low].val); - if (++low == size) break; - putchar(','); - } - puts("\n };"); - size = 1U << 5; - printf("\n static const code distfix[%u] = {", size); - low = 0; - for (;;) { - if ((low % 6) == 0) printf("\n "); - printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits, - state.distcode[low].val); - if (++low == size) break; - putchar(','); - } - puts("\n };"); -} -#endif /* MAKEFIXED */ - -/* - Update the window with the last wsize (normally 32K) bytes written before - returning. If window does not exist yet, create it. This is only called - when a window is already in use, or when output has been written during this - inflate call, but the end of the deflate stream has not been reached yet. - It is also called to create a window for dictionary data when a dictionary - is loaded. - - Providing output buffers larger than 32K to inflate() should provide a speed - advantage, since only the last 32K of output is copied to the sliding window - upon return from inflate(), and since all distances after the first 32K of - output will fall in the output data, making match copies simpler and faster. - The advantage may be dependent on the size of the processor's data caches. - */ -local int updatewindow(strm, out) -z_streamp strm; -unsigned out; -{ - struct inflate_state FAR *state; - unsigned copy, dist; - - state = (struct inflate_state FAR *)strm->state; - - /* if it hasn't been done already, allocate space for the window */ - if (state->window == Z_NULL) { - state->window = (unsigned char FAR *) - ZALLOC(strm, 1U << state->wbits, - sizeof(unsigned char)); - if (state->window == Z_NULL) return 1; - } - - /* if window not in use yet, initialize */ - if (state->wsize == 0) { - state->wsize = 1U << state->wbits; - state->wnext = 0; - state->whave = 0; - } - - /* copy state->wsize or less output bytes into the circular window */ - copy = out - strm->avail_out; - if (copy >= state->wsize) { - zmemcpy(state->window, strm->next_out - state->wsize, state->wsize); - state->wnext = 0; - state->whave = state->wsize; - } - else { - dist = state->wsize - state->wnext; - if (dist > copy) dist = copy; - zmemcpy(state->window + state->wnext, strm->next_out - copy, dist); - copy -= dist; - if (copy) { - zmemcpy(state->window, strm->next_out - copy, copy); - state->wnext = copy; - state->whave = state->wsize; - } - else { - state->wnext += dist; - if (state->wnext == state->wsize) state->wnext = 0; - if (state->whave < state->wsize) state->whave += dist; - } - } - return 0; -} - -/* Macros for inflate(): */ - -/* check function to use adler32() for zlib or crc32() for gzip */ -#ifdef GUNZIP -# define UPDATE(check, buf, len) \ - (state->flags ? crc32(check, buf, len) : adler32(check, buf, len)) -#else -# define UPDATE(check, buf, len) adler32(check, buf, len) -#endif - -/* check macros for header crc */ -#ifdef GUNZIP -# define CRC2(check, word) \ - do { \ - hbuf[0] = (unsigned char)(word); \ - hbuf[1] = (unsigned char)((word) >> 8); \ - check = crc32(check, hbuf, 2); \ - } while (0) - -# define CRC4(check, word) \ - do { \ - hbuf[0] = (unsigned char)(word); \ - hbuf[1] = (unsigned char)((word) >> 8); \ - hbuf[2] = (unsigned char)((word) >> 16); \ - hbuf[3] = (unsigned char)((word) >> 24); \ - check = crc32(check, hbuf, 4); \ - } while (0) -#endif - -/* Load registers with state in inflate() for speed */ -#define LOAD() \ - do { \ - put = strm->next_out; \ - left = strm->avail_out; \ - next = strm->next_in; \ - have = strm->avail_in; \ - hold = state->hold; \ - bits = state->bits; \ - } while (0) - -/* Restore state from registers in inflate() */ -#define RESTORE() \ - do { \ - strm->next_out = put; \ - strm->avail_out = left; \ - strm->next_in = next; \ - strm->avail_in = have; \ - state->hold = hold; \ - state->bits = bits; \ - } while (0) - -/* Clear the input bit accumulator */ -#define INITBITS() \ - do { \ - hold = 0; \ - bits = 0; \ - } while (0) - -/* Get a byte of input into the bit accumulator, or return from inflate() - if there is no input available. */ -#define PULLBYTE() \ - do { \ - if (have == 0) goto inf_leave; \ - have--; \ - hold += (unsigned long)(*next++) << bits; \ - bits += 8; \ - } while (0) - -/* Assure that there are at least n bits in the bit accumulator. If there is - not enough available input to do that, then return from inflate(). */ -#define NEEDBITS(n) \ - do { \ - while (bits < (unsigned)(n)) \ - PULLBYTE(); \ - } while (0) - -/* Return the low n bits of the bit accumulator (n < 16) */ -#define BITS(n) \ - ((unsigned)hold & ((1U << (n)) - 1)) - -/* Remove n bits from the bit accumulator */ -#define DROPBITS(n) \ - do { \ - hold >>= (n); \ - bits -= (unsigned)(n); \ - } while (0) - -/* Remove zero to seven bits as needed to go to a byte boundary */ -#define BYTEBITS() \ - do { \ - hold >>= bits & 7; \ - bits -= bits & 7; \ - } while (0) - -/* Reverse the bytes in a 32-bit value */ -#define REVERSE(q) \ - ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ - (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) - -/* - inflate() uses a state machine to process as much input data and generate as - much output data as possible before returning. The state machine is - structured roughly as follows: - - for (;;) switch (state) { - ... - case STATEn: - if (not enough input data or output space to make progress) - return; - ... make progress ... - state = STATEm; - break; - ... - } - - so when inflate() is called again, the same case is attempted again, and - if the appropriate resources are provided, the machine proceeds to the - next state. The NEEDBITS() macro is usually the way the state evaluates - whether it can proceed or should return. NEEDBITS() does the return if - the requested bits are not available. The typical use of the BITS macros - is: - - NEEDBITS(n); - ... do something with BITS(n) ... - DROPBITS(n); - - where NEEDBITS(n) either returns from inflate() if there isn't enough - input left to load n bits into the accumulator, or it continues. BITS(n) - gives the low n bits in the accumulator. When done, DROPBITS(n) drops - the low n bits off the accumulator. INITBITS() clears the accumulator - and sets the number of available bits to zero. BYTEBITS() discards just - enough bits to put the accumulator on a byte boundary. After BYTEBITS() - and a NEEDBITS(8), then BITS(8) would return the next byte in the stream. - - NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return - if there is no input available. The decoding of variable length codes uses - PULLBYTE() directly in order to pull just enough bytes to decode the next - code, and no more. - - Some states loop until they get enough input, making sure that enough - state information is maintained to continue the loop where it left off - if NEEDBITS() returns in the loop. For example, want, need, and keep - would all have to actually be part of the saved state in case NEEDBITS() - returns: - - case STATEw: - while (want < need) { - NEEDBITS(n); - keep[want++] = BITS(n); - DROPBITS(n); - } - state = STATEx; - case STATEx: - - As shown above, if the next state is also the next case, then the break - is omitted. - - A state may also return if there is not enough output space available to - complete that state. Those states are copying stored data, writing a - literal byte, and copying a matching string. - - When returning, a "goto inf_leave" is used to update the total counters, - update the check value, and determine whether any progress has been made - during that inflate() call in order to return the proper return code. - Progress is defined as a change in either strm->avail_in or strm->avail_out. - When there is a window, goto inf_leave will update the window with the last - output written. If a goto inf_leave occurs in the middle of decompression - and there is no window currently, goto inf_leave will create one and copy - output to the window for the next call of inflate(). - - In this implementation, the flush parameter of inflate() only affects the - return code (per zlib.h). inflate() always writes as much as possible to - strm->next_out, given the space available and the provided input--the effect - documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers - the allocation of and copying into a sliding window until necessary, which - provides the effect documented in zlib.h for Z_FINISH when the entire input - stream available. So the only thing the flush parameter actually does is: - when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it - will return Z_BUF_ERROR if it has not reached the end of the stream. - */ - -int ZEXPORT inflate(strm, flush) -z_streamp strm; -int flush; -{ - struct inflate_state FAR *state; - unsigned char FAR *next; /* next input */ - unsigned char FAR *put; /* next output */ - unsigned have, left; /* available input and output */ - unsigned long hold; /* bit buffer */ - unsigned bits; /* bits in bit buffer */ - unsigned in, out; /* save starting available input and output */ - unsigned copy; /* number of stored or match bytes to copy */ - unsigned char FAR *from; /* where to copy match bytes from */ - code here; /* current decoding table entry */ - code last; /* parent table entry */ - unsigned len; /* length to copy for repeats, bits to drop */ - int ret; /* return code */ -#ifdef GUNZIP - unsigned char hbuf[4]; /* buffer for gzip header crc calculation */ -#endif - static const unsigned short order[19] = /* permutation of code lengths */ - {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; - - if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL || - (strm->next_in == Z_NULL && strm->avail_in != 0)) - return Z_STREAM_ERROR; - - state = (struct inflate_state FAR *)strm->state; - if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */ - LOAD(); - in = have; - out = left; - ret = Z_OK; - for (;;) - switch (state->mode) { - case HEAD: - if (state->wrap == 0) { - state->mode = TYPEDO; - break; - } - NEEDBITS(16); -#ifdef GUNZIP - if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */ - state->check = crc32(0L, Z_NULL, 0); - CRC2(state->check, hold); - INITBITS(); - state->mode = FLAGS; - break; - } - state->flags = 0; /* expect zlib header */ - if (state->head != Z_NULL) - state->head->done = -1; - if (!(state->wrap & 1) || /* check if zlib header allowed */ -#else - if ( -#endif - ((BITS(8) << 8) + (hold >> 8)) % 31) { - strm->msg = (char *)"incorrect header check"; - state->mode = BAD; - break; - } - if (BITS(4) != Z_DEFLATED) { - strm->msg = (char *)"unknown compression method"; - state->mode = BAD; - break; - } - DROPBITS(4); - len = BITS(4) + 8; - if (state->wbits == 0) - state->wbits = len; - else if (len > state->wbits) { - strm->msg = (char *)"invalid window size"; - state->mode = BAD; - break; - } - state->dmax = 1U << len; - Tracev((stderr, "inflate: zlib header ok\n")); - strm->adler = state->check = adler32(0L, Z_NULL, 0); - state->mode = hold & 0x200 ? DICTID : TYPE; - INITBITS(); - break; -#ifdef GUNZIP - case FLAGS: - NEEDBITS(16); - state->flags = (int)(hold); - if ((state->flags & 0xff) != Z_DEFLATED) { - strm->msg = (char *)"unknown compression method"; - state->mode = BAD; - break; - } - if (state->flags & 0xe000) { - strm->msg = (char *)"unknown header flags set"; - state->mode = BAD; - break; - } - if (state->head != Z_NULL) - state->head->text = (int)((hold >> 8) & 1); - if (state->flags & 0x0200) CRC2(state->check, hold); - INITBITS(); - state->mode = TIME; - case TIME: - NEEDBITS(32); - if (state->head != Z_NULL) - state->head->time = hold; - if (state->flags & 0x0200) CRC4(state->check, hold); - INITBITS(); - state->mode = OS; - case OS: - NEEDBITS(16); - if (state->head != Z_NULL) { - state->head->xflags = (int)(hold & 0xff); - state->head->os = (int)(hold >> 8); - } - if (state->flags & 0x0200) CRC2(state->check, hold); - INITBITS(); - state->mode = EXLEN; - case EXLEN: - if (state->flags & 0x0400) { - NEEDBITS(16); - state->length = (unsigned)(hold); - if (state->head != Z_NULL) - state->head->extra_len = (unsigned)hold; - if (state->flags & 0x0200) CRC2(state->check, hold); - INITBITS(); - } - else if (state->head != Z_NULL) - state->head->extra = Z_NULL; - state->mode = EXTRA; - case EXTRA: - if (state->flags & 0x0400) { - copy = state->length; - if (copy > have) copy = have; - if (copy) { - if (state->head != Z_NULL && - state->head->extra != Z_NULL) { - len = state->head->extra_len - state->length; - zmemcpy(state->head->extra + len, next, - len + copy > state->head->extra_max ? - state->head->extra_max - len : copy); - } - if (state->flags & 0x0200) - state->check = crc32(state->check, next, copy); - have -= copy; - next += copy; - state->length -= copy; - } - if (state->length) goto inf_leave; - } - state->length = 0; - state->mode = NAME; - case NAME: - if (state->flags & 0x0800) { - if (have == 0) goto inf_leave; - copy = 0; - do { - len = (unsigned)(next[copy++]); - if (state->head != Z_NULL && - state->head->name != Z_NULL && - state->length < state->head->name_max) - state->head->name[state->length++] = len; - } while (len && copy < have); - if (state->flags & 0x0200) - state->check = crc32(state->check, next, copy); - have -= copy; - next += copy; - if (len) goto inf_leave; - } - else if (state->head != Z_NULL) - state->head->name = Z_NULL; - state->length = 0; - state->mode = COMMENT; - case COMMENT: - if (state->flags & 0x1000) { - if (have == 0) goto inf_leave; - copy = 0; - do { - len = (unsigned)(next[copy++]); - if (state->head != Z_NULL && - state->head->comment != Z_NULL && - state->length < state->head->comm_max) - state->head->comment[state->length++] = len; - } while (len && copy < have); - if (state->flags & 0x0200) - state->check = crc32(state->check, next, copy); - have -= copy; - next += copy; - if (len) goto inf_leave; - } - else if (state->head != Z_NULL) - state->head->comment = Z_NULL; - state->mode = HCRC; - case HCRC: - if (state->flags & 0x0200) { - NEEDBITS(16); - if (hold != (state->check & 0xffff)) { - strm->msg = (char *)"header crc mismatch"; - state->mode = BAD; - break; - } - INITBITS(); - } - if (state->head != Z_NULL) { - state->head->hcrc = (int)((state->flags >> 9) & 1); - state->head->done = 1; - } - strm->adler = state->check = crc32(0L, Z_NULL, 0); - state->mode = TYPE; - break; -#endif - case DICTID: - NEEDBITS(32); - strm->adler = state->check = REVERSE(hold); - INITBITS(); - state->mode = DICT; - case DICT: - if (state->havedict == 0) { - RESTORE(); - return Z_NEED_DICT; - } - strm->adler = state->check = adler32(0L, Z_NULL, 0); - state->mode = TYPE; - case TYPE: - if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave; - case TYPEDO: - if (state->last) { - BYTEBITS(); - state->mode = CHECK; - break; - } - NEEDBITS(3); - state->last = BITS(1); - DROPBITS(1); - switch (BITS(2)) { - case 0: /* stored block */ - Tracev((stderr, "inflate: stored block%s\n", - state->last ? " (last)" : "")); - state->mode = STORED; - break; - case 1: /* fixed block */ - fixedtables(state); - Tracev((stderr, "inflate: fixed codes block%s\n", - state->last ? " (last)" : "")); - state->mode = LEN_; /* decode codes */ - if (flush == Z_TREES) { - DROPBITS(2); - goto inf_leave; - } - break; - case 2: /* dynamic block */ - Tracev((stderr, "inflate: dynamic codes block%s\n", - state->last ? " (last)" : "")); - state->mode = TABLE; - break; - case 3: - strm->msg = (char *)"invalid block type"; - state->mode = BAD; - } - DROPBITS(2); - break; - case STORED: - BYTEBITS(); /* go to byte boundary */ - NEEDBITS(32); - if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { - strm->msg = (char *)"invalid stored block lengths"; - state->mode = BAD; - break; - } - state->length = (unsigned)hold & 0xffff; - Tracev((stderr, "inflate: stored length %u\n", - state->length)); - INITBITS(); - state->mode = COPY_; - if (flush == Z_TREES) goto inf_leave; - case COPY_: - state->mode = COPY; - case COPY: - copy = state->length; - if (copy) { - if (copy > have) copy = have; - if (copy > left) copy = left; - if (copy == 0) goto inf_leave; - zmemcpy(put, next, copy); - have -= copy; - next += copy; - left -= copy; - put += copy; - state->length -= copy; - break; - } - Tracev((stderr, "inflate: stored end\n")); - state->mode = TYPE; - break; - case TABLE: - NEEDBITS(14); - state->nlen = BITS(5) + 257; - DROPBITS(5); - state->ndist = BITS(5) + 1; - DROPBITS(5); - state->ncode = BITS(4) + 4; - DROPBITS(4); -#ifndef PKZIP_BUG_WORKAROUND - if (state->nlen > 286 || state->ndist > 30) { - strm->msg = (char *)"too many length or distance symbols"; - state->mode = BAD; - break; - } -#endif - Tracev((stderr, "inflate: table sizes ok\n")); - state->have = 0; - state->mode = LENLENS; - case LENLENS: - while (state->have < state->ncode) { - NEEDBITS(3); - state->lens[order[state->have++]] = (unsigned short)BITS(3); - DROPBITS(3); - } - while (state->have < 19) - state->lens[order[state->have++]] = 0; - state->next = state->codes; - state->lencode = (code const FAR *)(state->next); - state->lenbits = 7; - ret = inflate_table(CODES, state->lens, 19, &(state->next), - &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid code lengths set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: code lengths ok\n")); - state->have = 0; - state->mode = CODELENS; - case CODELENS: - while (state->have < state->nlen + state->ndist) { - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if (here.val < 16) { - NEEDBITS(here.bits); - DROPBITS(here.bits); - state->lens[state->have++] = here.val; - } - else { - if (here.val == 16) { - NEEDBITS(here.bits + 2); - DROPBITS(here.bits); - if (state->have == 0) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - len = state->lens[state->have - 1]; - copy = 3 + BITS(2); - DROPBITS(2); - } - else if (here.val == 17) { - NEEDBITS(here.bits + 3); - DROPBITS(here.bits); - len = 0; - copy = 3 + BITS(3); - DROPBITS(3); - } - else { - NEEDBITS(here.bits + 7); - DROPBITS(here.bits); - len = 0; - copy = 11 + BITS(7); - DROPBITS(7); - } - if (state->have + copy > state->nlen + state->ndist) { - strm->msg = (char *)"invalid bit length repeat"; - state->mode = BAD; - break; - } - while (copy--) - state->lens[state->have++] = (unsigned short)len; - } - } - - /* handle error breaks in while */ - if (state->mode == BAD) break; - - /* check for end-of-block code (better have one) */ - if (state->lens[256] == 0) { - strm->msg = (char *)"invalid code -- missing end-of-block"; - state->mode = BAD; - break; - } - - /* build code tables -- note: do not change the lenbits or distbits - values here (9 and 6) without reading the comments in inftrees.h - concerning the ENOUGH constants, which depend on those values */ - state->next = state->codes; - state->lencode = (code const FAR *)(state->next); - state->lenbits = 9; - ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), - &(state->lenbits), state->work); - if (ret) { - strm->msg = (char *)"invalid literal/lengths set"; - state->mode = BAD; - break; - } - state->distcode = (code const FAR *)(state->next); - state->distbits = 6; - ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, - &(state->next), &(state->distbits), state->work); - if (ret) { - strm->msg = (char *)"invalid distances set"; - state->mode = BAD; - break; - } - Tracev((stderr, "inflate: codes ok\n")); - state->mode = LEN_; - if (flush == Z_TREES) goto inf_leave; - case LEN_: - state->mode = LEN; - case LEN: - if (have >= 6 && left >= 258) { - RESTORE(); - inflate_fast(strm, out); - LOAD(); - if (state->mode == TYPE) - state->back = -1; - break; - } - state->back = 0; - for (;;) { - here = state->lencode[BITS(state->lenbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if (here.op && (here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->lencode[last.val + - (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)(last.bits + here.bits) <= bits) break; - PULLBYTE(); - } - DROPBITS(last.bits); - state->back += last.bits; - } - DROPBITS(here.bits); - state->back += here.bits; - state->length = (unsigned)here.val; - if ((int)(here.op) == 0) { - Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? - "inflate: literal '%c'\n" : - "inflate: literal 0x%02x\n", here.val)); - state->mode = LIT; - break; - } - if (here.op & 32) { - Tracevv((stderr, "inflate: end of block\n")); - state->back = -1; - state->mode = TYPE; - break; - } - if (here.op & 64) { - strm->msg = (char *)"invalid literal/length code"; - state->mode = BAD; - break; - } - state->extra = (unsigned)(here.op) & 15; - state->mode = LENEXT; - case LENEXT: - if (state->extra) { - NEEDBITS(state->extra); - state->length += BITS(state->extra); - DROPBITS(state->extra); - state->back += state->extra; - } - Tracevv((stderr, "inflate: length %u\n", state->length)); - state->was = state->length; - state->mode = DIST; - case DIST: - for (;;) { - here = state->distcode[BITS(state->distbits)]; - if ((unsigned)(here.bits) <= bits) break; - PULLBYTE(); - } - if ((here.op & 0xf0) == 0) { - last = here; - for (;;) { - here = state->distcode[last.val + - (BITS(last.bits + last.op) >> last.bits)]; - if ((unsigned)(last.bits + here.bits) <= bits) break; - PULLBYTE(); - } - DROPBITS(last.bits); - state->back += last.bits; - } - DROPBITS(here.bits); - state->back += here.bits; - if (here.op & 64) { - strm->msg = (char *)"invalid distance code"; - state->mode = BAD; - break; - } - state->offset = (unsigned)here.val; - state->extra = (unsigned)(here.op) & 15; - state->mode = DISTEXT; - case DISTEXT: - if (state->extra) { - NEEDBITS(state->extra); - state->offset += BITS(state->extra); - DROPBITS(state->extra); - state->back += state->extra; - } -#ifdef INFLATE_STRICT - if (state->offset > state->dmax) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#endif - Tracevv((stderr, "inflate: distance %u\n", state->offset)); - state->mode = MATCH; - case MATCH: - if (left == 0) goto inf_leave; - copy = out - left; - if (state->offset > copy) { /* copy from window */ - copy = state->offset - copy; - if (copy > state->whave) { - if (state->sane) { - strm->msg = (char *)"invalid distance too far back"; - state->mode = BAD; - break; - } -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - Trace((stderr, "inflate.c too far\n")); - copy -= state->whave; - if (copy > state->length) copy = state->length; - if (copy > left) copy = left; - left -= copy; - state->length -= copy; - do { - *put++ = 0; - } while (--copy); - if (state->length == 0) state->mode = LEN; - break; -#endif - } - if (copy > state->wnext) { - copy -= state->wnext; - from = state->window + (state->wsize - copy); - } - else - from = state->window + (state->wnext - copy); - if (copy > state->length) copy = state->length; - } - else { /* copy from output */ - from = put - state->offset; - copy = state->length; - } - if (copy > left) copy = left; - left -= copy; - state->length -= copy; - do { - *put++ = *from++; - } while (--copy); - if (state->length == 0) state->mode = LEN; - break; - case LIT: - if (left == 0) goto inf_leave; - *put++ = (unsigned char)(state->length); - left--; - state->mode = LEN; - break; - case CHECK: - if (state->wrap) { - NEEDBITS(32); - out -= left; - strm->total_out += out; - state->total += out; - if (out) - strm->adler = state->check = - UPDATE(state->check, put - out, out); - out = left; - if (( -#ifdef GUNZIP - state->flags ? hold : -#endif - REVERSE(hold)) != state->check) { - strm->msg = (char *)"incorrect data check"; - state->mode = BAD; - break; - } - INITBITS(); - Tracev((stderr, "inflate: check matches trailer\n")); - } -#ifdef GUNZIP - state->mode = LENGTH; - case LENGTH: - if (state->wrap && state->flags) { - NEEDBITS(32); - if (hold != (state->total & 0xffffffffUL)) { - strm->msg = (char *)"incorrect length check"; - state->mode = BAD; - break; - } - INITBITS(); - Tracev((stderr, "inflate: length matches trailer\n")); - } -#endif - state->mode = DONE; - case DONE: - ret = Z_STREAM_END; - goto inf_leave; - case BAD: - ret = Z_DATA_ERROR; - goto inf_leave; - case MEM: - return Z_MEM_ERROR; - case SYNC: - default: - return Z_STREAM_ERROR; - } - - /* - Return from inflate(), updating the total counts and the check value. - If there was no progress during the inflate() call, return a buffer - error. Call updatewindow() to create and/or update the window state. - Note: a memory error from inflate() is non-recoverable. - */ - inf_leave: - RESTORE(); - if (state->wsize || (state->mode < CHECK && out != strm->avail_out)) - if (updatewindow(strm, out)) { - state->mode = MEM; - return Z_MEM_ERROR; - } - in -= strm->avail_in; - out -= strm->avail_out; - strm->total_in += in; - strm->total_out += out; - state->total += out; - if (state->wrap && out) - strm->adler = state->check = - UPDATE(state->check, strm->next_out - out, out); - strm->data_type = state->bits + (state->last ? 64 : 0) + - (state->mode == TYPE ? 128 : 0) + - (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0); - if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK) - ret = Z_BUF_ERROR; - return ret; -} - -int ZEXPORT inflateEnd(strm) -z_streamp strm; -{ - struct inflate_state FAR *state; - if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) - return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - if (state->window != Z_NULL) ZFREE(strm, state->window); - ZFREE(strm, strm->state); - strm->state = Z_NULL; - Tracev((stderr, "inflate: end\n")); - return Z_OK; -} - -int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength) -z_streamp strm; -const Bytef *dictionary; -uInt dictLength; -{ - struct inflate_state FAR *state; - unsigned long id; - - /* check state */ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - if (state->wrap != 0 && state->mode != DICT) - return Z_STREAM_ERROR; - - /* check for correct dictionary id */ - if (state->mode == DICT) { - id = adler32(0L, Z_NULL, 0); - id = adler32(id, dictionary, dictLength); - if (id != state->check) - return Z_DATA_ERROR; - } - - /* copy dictionary to window */ - if (updatewindow(strm, strm->avail_out)) { - state->mode = MEM; - return Z_MEM_ERROR; - } - if (dictLength > state->wsize) { - zmemcpy(state->window, dictionary + dictLength - state->wsize, - state->wsize); - state->whave = state->wsize; - } - else { - zmemcpy(state->window + state->wsize - dictLength, dictionary, - dictLength); - state->whave = dictLength; - } - state->havedict = 1; - Tracev((stderr, "inflate: dictionary set\n")); - return Z_OK; -} - -int ZEXPORT inflateGetHeader(strm, head) -z_streamp strm; -gz_headerp head; -{ - struct inflate_state FAR *state; - - /* check state */ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - if ((state->wrap & 2) == 0) return Z_STREAM_ERROR; - - /* save header structure */ - state->head = head; - head->done = 0; - return Z_OK; -} - -/* - Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found - or when out of input. When called, *have is the number of pattern bytes - found in order so far, in 0..3. On return *have is updated to the new - state. If on return *have equals four, then the pattern was found and the - return value is how many bytes were read including the last byte of the - pattern. If *have is less than four, then the pattern has not been found - yet and the return value is len. In the latter case, syncsearch() can be - called again with more data and the *have state. *have is initialized to - zero for the first call. - */ -local unsigned syncsearch(have, buf, len) -unsigned FAR *have; -unsigned char FAR *buf; -unsigned len; -{ - unsigned got; - unsigned next; - - got = *have; - next = 0; - while (next < len && got < 4) { - if ((int)(buf[next]) == (got < 2 ? 0 : 0xff)) - got++; - else if (buf[next]) - got = 0; - else - got = 4 - got; - next++; - } - *have = got; - return next; -} - -int ZEXPORT inflateSync(strm) -z_streamp strm; -{ - unsigned len; /* number of bytes to look at or looked at */ - unsigned long in, out; /* temporary to save total_in and total_out */ - unsigned char buf[4]; /* to restore bit buffer to byte string */ - struct inflate_state FAR *state; - - /* check parameters */ - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR; - - /* if first time, start search in bit buffer */ - if (state->mode != SYNC) { - state->mode = SYNC; - state->hold <<= state->bits & 7; - state->bits -= state->bits & 7; - len = 0; - while (state->bits >= 8) { - buf[len++] = (unsigned char)(state->hold); - state->hold >>= 8; - state->bits -= 8; - } - state->have = 0; - syncsearch(&(state->have), buf, len); - } - - /* search available input */ - len = syncsearch(&(state->have), strm->next_in, strm->avail_in); - strm->avail_in -= len; - strm->next_in += len; - strm->total_in += len; - - /* return no joy or set up to restart inflate() on a new block */ - if (state->have != 4) return Z_DATA_ERROR; - in = strm->total_in; out = strm->total_out; - inflateReset(strm); - strm->total_in = in; strm->total_out = out; - state->mode = TYPE; - return Z_OK; -} - -/* - Returns true if inflate is currently at the end of a block generated by - Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP - implementation to provide an additional safety check. PPP uses - Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored - block. When decompressing, PPP checks that at the end of input packet, - inflate is waiting for these length bytes. - */ -int ZEXPORT inflateSyncPoint(strm) -z_streamp strm; -{ - struct inflate_state FAR *state; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - return state->mode == STORED && state->bits == 0; -} - -int ZEXPORT inflateCopy(dest, source) -z_streamp dest; -z_streamp source; -{ - struct inflate_state FAR *state; - struct inflate_state FAR *copy; - unsigned char FAR *window; - unsigned wsize; - - /* check input */ - if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL || - source->zalloc == (alloc_func)0 || source->zfree == (free_func)0) - return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)source->state; - - /* allocate space */ - copy = (struct inflate_state FAR *) - ZALLOC(source, 1, sizeof(struct inflate_state)); - if (copy == Z_NULL) return Z_MEM_ERROR; - window = Z_NULL; - if (state->window != Z_NULL) { - window = (unsigned char FAR *) - ZALLOC(source, 1U << state->wbits, sizeof(unsigned char)); - if (window == Z_NULL) { - ZFREE(source, copy); - return Z_MEM_ERROR; - } - } - - /* copy state */ - zmemcpy(dest, source, sizeof(z_stream)); - zmemcpy(copy, state, sizeof(struct inflate_state)); - if (state->lencode >= state->codes && - state->lencode <= state->codes + ENOUGH - 1) { - copy->lencode = copy->codes + (state->lencode - state->codes); - copy->distcode = copy->codes + (state->distcode - state->codes); - } - copy->next = copy->codes + (state->next - state->codes); - if (window != Z_NULL) { - wsize = 1U << state->wbits; - zmemcpy(window, state->window, wsize); - } - copy->window = window; - dest->state = (struct internal_state FAR *)copy; - return Z_OK; -} - -int ZEXPORT inflateUndermine(strm, subvert) -z_streamp strm; -int subvert; -{ - struct inflate_state FAR *state; - - if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; - state = (struct inflate_state FAR *)strm->state; - state->sane = !subvert; -#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR - return Z_OK; -#else - state->sane = 1; - return Z_DATA_ERROR; -#endif -} - -long ZEXPORT inflateMark(strm) -z_streamp strm; -{ - struct inflate_state FAR *state; - - if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16; - state = (struct inflate_state FAR *)strm->state; - return ((long)(state->back) << 16) + - (state->mode == COPY ? state->length : - (state->mode == MATCH ? state->was - state->length : 0)); -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.h deleted file mode 100644 index 95f4986..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inflate.h +++ /dev/null @@ -1,122 +0,0 @@ -/* inflate.h -- internal inflate state definition - * Copyright (C) 1995-2009 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* define NO_GZIP when compiling if you want to disable gzip header and - trailer decoding by inflate(). NO_GZIP would be used to avoid linking in - the crc code when it is not needed. For shared libraries, gzip decoding - should be left enabled. */ -#ifndef NO_GZIP -# define GUNZIP -#endif - -/* Possible inflate modes between inflate() calls */ -typedef enum { - HEAD, /* i: waiting for magic header */ - FLAGS, /* i: waiting for method and flags (gzip) */ - TIME, /* i: waiting for modification time (gzip) */ - OS, /* i: waiting for extra flags and operating system (gzip) */ - EXLEN, /* i: waiting for extra length (gzip) */ - EXTRA, /* i: waiting for extra bytes (gzip) */ - NAME, /* i: waiting for end of file name (gzip) */ - COMMENT, /* i: waiting for end of comment (gzip) */ - HCRC, /* i: waiting for header crc (gzip) */ - DICTID, /* i: waiting for dictionary check value */ - DICT, /* waiting for inflateSetDictionary() call */ - TYPE, /* i: waiting for type bits, including last-flag bit */ - TYPEDO, /* i: same, but skip check to exit inflate on new block */ - STORED, /* i: waiting for stored size (length and complement) */ - COPY_, /* i/o: same as COPY below, but only first time in */ - COPY, /* i/o: waiting for input or output to copy stored block */ - TABLE, /* i: waiting for dynamic block table lengths */ - LENLENS, /* i: waiting for code length code lengths */ - CODELENS, /* i: waiting for length/lit and distance code lengths */ - LEN_, /* i: same as LEN below, but only first time in */ - LEN, /* i: waiting for length/lit/eob code */ - LENEXT, /* i: waiting for length extra bits */ - DIST, /* i: waiting for distance code */ - DISTEXT, /* i: waiting for distance extra bits */ - MATCH, /* o: waiting for output space to copy string */ - LIT, /* o: waiting for output space to write literal */ - CHECK, /* i: waiting for 32-bit check value */ - LENGTH, /* i: waiting for 32-bit length (gzip) */ - DONE, /* finished check, done -- remain here until reset */ - BAD, /* got a data error -- remain here until reset */ - MEM, /* got an inflate() memory error -- remain here until reset */ - SYNC /* looking for synchronization bytes to restart inflate() */ -} inflate_mode; - -/* - State transitions between above modes - - - (most modes can go to BAD or MEM on error -- not shown for clarity) - - Process header: - HEAD -> (gzip) or (zlib) or (raw) - (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT -> - HCRC -> TYPE - (zlib) -> DICTID or TYPE - DICTID -> DICT -> TYPE - (raw) -> TYPEDO - Read deflate blocks: - TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK - STORED -> COPY_ -> COPY -> TYPE - TABLE -> LENLENS -> CODELENS -> LEN_ - LEN_ -> LEN - Read deflate codes in fixed or dynamic block: - LEN -> LENEXT or LIT or TYPE - LENEXT -> DIST -> DISTEXT -> MATCH -> LEN - LIT -> LEN - Process trailer: - CHECK -> LENGTH -> DONE - */ - -/* state maintained between inflate() calls. Approximately 10K bytes. */ -struct inflate_state { - inflate_mode mode; /* current inflate mode */ - int last; /* true if processing last block */ - int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ - int havedict; /* true if dictionary provided */ - int flags; /* gzip header method and flags (0 if zlib) */ - unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */ - unsigned long check; /* protected copy of check value */ - unsigned long total; /* protected copy of output count */ - gz_headerp head; /* where to save gzip header information */ - /* sliding window */ - unsigned wbits; /* log base 2 of requested window size */ - unsigned wsize; /* window size or zero if not using window */ - unsigned whave; /* valid bytes in the window */ - unsigned wnext; /* window write index */ - unsigned char FAR *window; /* allocated sliding window, if needed */ - /* bit accumulator */ - unsigned long hold; /* input bit accumulator */ - unsigned bits; /* number of bits in "in" */ - /* for string and stored block copying */ - unsigned length; /* literal or length of data to copy */ - unsigned offset; /* distance back to copy string from */ - /* for table and code decoding */ - unsigned extra; /* extra bits needed */ - /* fixed and dynamic code tables */ - code const FAR *lencode; /* starting table for length/literal codes */ - code const FAR *distcode; /* starting table for distance codes */ - unsigned lenbits; /* index bits for lencode */ - unsigned distbits; /* index bits for distcode */ - /* dynamic table building */ - unsigned ncode; /* number of code length code lengths */ - unsigned nlen; /* number of length code lengths */ - unsigned ndist; /* number of distance code lengths */ - unsigned have; /* number of code lengths in lens[] */ - code FAR *next; /* next available space in codes[] */ - unsigned short lens[320]; /* temporary storage for code lengths */ - unsigned short work[288]; /* work area for code table building */ - code codes[ENOUGH]; /* space for code tables */ - int sane; /* if false, allow invalid distance too far */ - int back; /* bits back of last unprocessed length/lit */ - unsigned was; /* initial length of match */ -}; diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.c deleted file mode 100644 index 11e9c52..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.c +++ /dev/null @@ -1,330 +0,0 @@ -/* inftrees.c -- generate Huffman trees for efficient decoding - * Copyright (C) 1995-2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -#include "zutil.h" -#include "inftrees.h" - -#define MAXBITS 15 - -const char inflate_copyright[] = - " inflate 1.2.5 Copyright 1995-2010 Mark Adler "; -/* - If you use the zlib library in a product, an acknowledgment is welcome - in the documentation of your product. If for some reason you cannot - include such an acknowledgment, I would appreciate that you keep this - copyright string in the executable of your product. - */ - -/* - Build a set of tables to decode the provided canonical Huffman code. - The code lengths are lens[0..codes-1]. The result starts at *table, - whose indices are 0..2^bits-1. work is a writable array of at least - lens shorts, which is used as a work area. type is the type of code - to be generated, CODES, LENS, or DISTS. On return, zero is success, - -1 is an invalid code, and +1 means that ENOUGH isn't enough. table - on return points to the next available entry's address. bits is the - requested root table index bits, and on return it is the actual root - table index bits. It will differ if the request is greater than the - longest code or if it is less than the shortest code. - */ -int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work) -codetype type; -unsigned short FAR *lens; -unsigned codes; -code FAR * FAR *table; -unsigned FAR *bits; -unsigned short FAR *work; -{ - unsigned len; /* a code's length in bits */ - unsigned sym; /* index of code symbols */ - unsigned min, max; /* minimum and maximum code lengths */ - unsigned root; /* number of index bits for root table */ - unsigned curr; /* number of index bits for current table */ - unsigned drop; /* code bits to drop for sub-table */ - int left; /* number of prefix codes available */ - unsigned used; /* code entries in table used */ - unsigned huff; /* Huffman code */ - unsigned incr; /* for incrementing code, index */ - unsigned fill; /* index for replicating entries */ - unsigned low; /* low bits for current root entry */ - unsigned mask; /* mask for low root bits */ - code here; /* table entry for duplication */ - code FAR *next; /* next available space in table */ - const unsigned short FAR *base; /* base value table to use */ - const unsigned short FAR *extra; /* extra bits table to use */ - int end; /* use base and extra for symbol > end */ - unsigned short count[MAXBITS+1]; /* number of codes of each length */ - unsigned short offs[MAXBITS+1]; /* offsets in table for each length */ - static const unsigned short lbase[31] = { /* Length codes 257..285 base */ - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, - 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; - static const unsigned short lext[31] = { /* Length codes 257..285 extra */ - 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, - 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 73, 195}; - static const unsigned short dbase[32] = { /* Distance codes 0..29 base */ - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, - 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, - 8193, 12289, 16385, 24577, 0, 0}; - static const unsigned short dext[32] = { /* Distance codes 0..29 extra */ - 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, - 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, - 28, 28, 29, 29, 64, 64}; - - /* - Process a set of code lengths to create a canonical Huffman code. The - code lengths are lens[0..codes-1]. Each length corresponds to the - symbols 0..codes-1. The Huffman code is generated by first sorting the - symbols by length from short to long, and retaining the symbol order - for codes with equal lengths. Then the code starts with all zero bits - for the first code of the shortest length, and the codes are integer - increments for the same length, and zeros are appended as the length - increases. For the deflate format, these bits are stored backwards - from their more natural integer increment ordering, and so when the - decoding tables are built in the large loop below, the integer codes - are incremented backwards. - - This routine assumes, but does not check, that all of the entries in - lens[] are in the range 0..MAXBITS. The caller must assure this. - 1..MAXBITS is interpreted as that code length. zero means that that - symbol does not occur in this code. - - The codes are sorted by computing a count of codes for each length, - creating from that a table of starting indices for each length in the - sorted table, and then entering the symbols in order in the sorted - table. The sorted table is work[], with that space being provided by - the caller. - - The length counts are used for other purposes as well, i.e. finding - the minimum and maximum length codes, determining if there are any - codes at all, checking for a valid set of lengths, and looking ahead - at length counts to determine sub-table sizes when building the - decoding tables. - */ - - /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ - for (len = 0; len <= MAXBITS; len++) - count[len] = 0; - for (sym = 0; sym < codes; sym++) - count[lens[sym]]++; - - /* bound code lengths, force root to be within code lengths */ - root = *bits; - for (max = MAXBITS; max >= 1; max--) - if (count[max] != 0) break; - if (root > max) root = max; - if (max == 0) { /* no symbols to code at all */ - here.op = (unsigned char)64; /* invalid code marker */ - here.bits = (unsigned char)1; - here.val = (unsigned short)0; - *(*table)++ = here; /* make a table to force an error */ - *(*table)++ = here; - *bits = 1; - return 0; /* no symbols, but wait for decoding to report error */ - } - for (min = 1; min < max; min++) - if (count[min] != 0) break; - if (root < min) root = min; - - /* check for an over-subscribed or incomplete set of lengths */ - left = 1; - for (len = 1; len <= MAXBITS; len++) { - left <<= 1; - left -= count[len]; - if (left < 0) return -1; /* over-subscribed */ - } - if (left > 0 && (type == CODES || max != 1)) - return -1; /* incomplete set */ - - /* generate offsets into symbol table for each length for sorting */ - offs[1] = 0; - for (len = 1; len < MAXBITS; len++) - offs[len + 1] = offs[len] + count[len]; - - /* sort symbols by length, by symbol order within each length */ - for (sym = 0; sym < codes; sym++) - if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym; - - /* - Create and fill in decoding tables. In this loop, the table being - filled is at next and has curr index bits. The code being used is huff - with length len. That code is converted to an index by dropping drop - bits off of the bottom. For codes where len is less than drop + curr, - those top drop + curr - len bits are incremented through all values to - fill the table with replicated entries. - - root is the number of index bits for the root table. When len exceeds - root, sub-tables are created pointed to by the root entry with an index - of the low root bits of huff. This is saved in low to check for when a - new sub-table should be started. drop is zero when the root table is - being filled, and drop is root when sub-tables are being filled. - - When a new sub-table is needed, it is necessary to look ahead in the - code lengths to determine what size sub-table is needed. The length - counts are used for this, and so count[] is decremented as codes are - entered in the tables. - - used keeps track of how many table entries have been allocated from the - provided *table space. It is checked for LENS and DIST tables against - the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in - the initial root table size constants. See the comments in inftrees.h - for more information. - - sym increments through all symbols, and the loop terminates when - all codes of length max, i.e. all codes, have been processed. This - routine permits incomplete codes, so another loop after this one fills - in the rest of the decoding tables with invalid code markers. - */ - - /* set up for code type */ - switch (type) { - case CODES: - base = extra = work; /* dummy value--not used */ - end = 19; - break; - case LENS: - base = lbase; - base -= 257; - extra = lext; - extra -= 257; - end = 256; - break; - default: /* DISTS */ - base = dbase; - extra = dext; - end = -1; - } - - /* initialize state for loop */ - huff = 0; /* starting code */ - sym = 0; /* starting code symbol */ - len = min; /* starting code length */ - next = *table; /* current table to fill in */ - curr = root; /* current table index bits */ - drop = 0; /* current bits to drop from code for index */ - low = (unsigned)(-1); /* trigger new sub-table when len > root */ - used = 1U << root; /* use root table entries */ - mask = used - 1; /* mask for comparing low */ - - /* check available table space */ - if ((type == LENS && used >= ENOUGH_LENS) || - (type == DISTS && used >= ENOUGH_DISTS)) - return 1; - - /* process all codes and make table entries */ - for (;;) { - /* create table entry */ - here.bits = (unsigned char)(len - drop); - if ((int)(work[sym]) < end) { - here.op = (unsigned char)0; - here.val = work[sym]; - } - else if ((int)(work[sym]) > end) { - here.op = (unsigned char)(extra[work[sym]]); - here.val = base[work[sym]]; - } - else { - here.op = (unsigned char)(32 + 64); /* end of block */ - here.val = 0; - } - - /* replicate for those indices with low len bits equal to huff */ - incr = 1U << (len - drop); - fill = 1U << curr; - min = fill; /* save offset to next table */ - do { - fill -= incr; - next[(huff >> drop) + fill] = here; - } while (fill != 0); - - /* backwards increment the len-bit code huff */ - incr = 1U << (len - 1); - while (huff & incr) - incr >>= 1; - if (incr != 0) { - huff &= incr - 1; - huff += incr; - } - else - huff = 0; - - /* go to next symbol, update count, len */ - sym++; - if (--(count[len]) == 0) { - if (len == max) break; - len = lens[work[sym]]; - } - - /* create new sub-table if needed */ - if (len > root && (huff & mask) != low) { - /* if first time, transition to sub-tables */ - if (drop == 0) - drop = root; - - /* increment past last table */ - next += min; /* here min is 1 << curr */ - - /* determine length of next table */ - curr = len - drop; - left = (int)(1 << curr); - while (curr + drop < max) { - left -= count[curr + drop]; - if (left <= 0) break; - curr++; - left <<= 1; - } - - /* check for enough space */ - used += 1U << curr; - if ((type == LENS && used >= ENOUGH_LENS) || - (type == DISTS && used >= ENOUGH_DISTS)) - return 1; - - /* point entry in root table to sub-table */ - low = huff & mask; - (*table)[low].op = (unsigned char)curr; - (*table)[low].bits = (unsigned char)root; - (*table)[low].val = (unsigned short)(next - *table); - } - } - - /* - Fill in rest of table for incomplete codes. This loop is similar to the - loop above in incrementing huff for table indices. It is assumed that - len is equal to curr + drop, so there is no loop needed to increment - through high index bits. When the current sub-table is filled, the loop - drops back to the root table to fill in any remaining entries there. - */ - here.op = (unsigned char)64; /* invalid code marker */ - here.bits = (unsigned char)(len - drop); - here.val = (unsigned short)0; - while (huff != 0) { - /* when done with sub-table, drop back to root table */ - if (drop != 0 && (huff & mask) != low) { - drop = 0; - len = root; - next = *table; - here.bits = (unsigned char)len; - } - - /* put invalid code marker in table */ - next[huff >> drop] = here; - - /* backwards increment the len-bit code huff */ - incr = 1U << (len - 1); - while (huff & incr) - incr >>= 1; - if (incr != 0) { - huff &= incr - 1; - huff += incr; - } - else - huff = 0; - } - - /* set return parameters */ - *table += used; - *bits = root; - return 0; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.h deleted file mode 100644 index baa53a0..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/inftrees.h +++ /dev/null @@ -1,62 +0,0 @@ -/* inftrees.h -- header to use inftrees.c - * Copyright (C) 1995-2005, 2010 Mark Adler - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* Structure for decoding tables. Each entry provides either the - information needed to do the operation requested by the code that - indexed that table entry, or it provides a pointer to another - table that indexes more bits of the code. op indicates whether - the entry is a pointer to another table, a literal, a length or - distance, an end-of-block, or an invalid code. For a table - pointer, the low four bits of op is the number of index bits of - that table. For a length or distance, the low four bits of op - is the number of extra bits to get after the code. bits is - the number of bits in this code or part of the code to drop off - of the bit buffer. val is the actual byte to output in the case - of a literal, the base length or distance, or the offset from - the current table to the next table. Each entry is four bytes. */ -typedef struct { - unsigned char op; /* operation, extra bits, table bits */ - unsigned char bits; /* bits in this part of the code */ - unsigned short val; /* offset in table or code value */ -} code; - -/* op values as set by inflate_table(): - 00000000 - literal - 0000tttt - table link, tttt != 0 is the number of table index bits - 0001eeee - length or distance, eeee is the number of extra bits - 01100000 - end of block - 01000000 - invalid code - */ - -/* Maximum size of the dynamic table. The maximum number of code structures is - 1444, which is the sum of 852 for literal/length codes and 592 for distance - codes. These values were found by exhaustive searches using the program - examples/enough.c found in the zlib distribtution. The arguments to that - program are the number of symbols, the initial root table size, and the - maximum bit length of a code. "enough 286 9 15" for literal/length codes - returns returns 852, and "enough 30 6 15" for distance codes returns 592. - The initial root table size (9 or 6) is found in the fifth argument of the - inflate_table() calls in inflate.c and infback.c. If the root table size is - changed, then these maximum sizes would be need to be recalculated and - updated. */ -#define ENOUGH_LENS 852 -#define ENOUGH_DISTS 592 -#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS) - -/* Type of code to build for inflate_table() */ -typedef enum { - CODES, - LENS, - DISTS -} codetype; - -int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens, - unsigned codes, code FAR * FAR *table, - unsigned FAR *bits, unsigned short FAR *work)); diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.c deleted file mode 100644 index d1de3cd..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.c +++ /dev/null @@ -1,1244 +0,0 @@ -/* trees.c -- output deflated data using Huffman coding - * Copyright (C) 1995-2010 Jean-loup Gailly - * detect_data_type() function provided freely by Cosmin Truta, 2006 - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* - * ALGORITHM - * - * The "deflation" process uses several Huffman trees. The more - * common source values are represented by shorter bit sequences. - * - * Each code tree is stored in a compressed form which is itself - * a Huffman encoding of the lengths of all the code strings (in - * ascending order by source values). The actual code strings are - * reconstructed from the lengths in the inflate process, as described - * in the deflate specification. - * - * REFERENCES - * - * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification". - * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc - * - * Storer, James A. - * Data Compression: Methods and Theory, pp. 49-50. - * Computer Science Press, 1988. ISBN 0-7167-8156-5. - * - * Sedgewick, R. - * Algorithms, p290. - * Addison-Wesley, 1983. ISBN 0-201-06672-6. - */ - -/* @(#) $Id$ */ - -/* #define GEN_TREES_H */ - -#include "deflate.h" - -#ifdef DEBUG_ZLIB -# include <ctype.h> -#endif - -/* =========================================================================== - * Constants - */ - -#define MAX_BL_BITS 7 -/* Bit length codes must not exceed MAX_BL_BITS bits */ - -#define END_BLOCK 256 -/* end of block literal code */ - -#define REP_3_6 16 -/* repeat previous bit length 3-6 times (2 bits of repeat count) */ - -#define REPZ_3_10 17 -/* repeat a zero length 3-10 times (3 bits of repeat count) */ - -#define REPZ_11_138 18 -/* repeat a zero length 11-138 times (7 bits of repeat count) */ - -local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */ - = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}; - -local const int extra_dbits[D_CODES] /* extra bits for each distance code */ - = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; - -local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */ - = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}; - -local const uch bl_order[BL_CODES] - = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}; -/* The lengths of the bit length codes are sent in order of decreasing - * probability, to avoid transmitting the lengths for unused bit length codes. - */ - -#define Buf_size (8 * 2*sizeof(char)) -/* Number of bits used within bi_buf. (bi_buf might be implemented on - * more than 16 bits on some systems.) - */ - -/* =========================================================================== - * Local data. These are initialized only once. - */ - -#define DIST_CODE_LEN 512 /* see definition of array dist_code below */ - -#if defined(GEN_TREES_H) || !defined(STDC) -/* non ANSI compilers may not accept trees.h */ - -local ct_data static_ltree[L_CODES+2]; -/* The static literal tree. Since the bit lengths are imposed, there is no - * need for the L_CODES extra codes used during heap construction. However - * The codes 286 and 287 are needed to build a canonical tree (see _tr_init - * below). - */ - -local ct_data static_dtree[D_CODES]; -/* The static distance tree. (Actually a trivial tree since all codes use - * 5 bits.) - */ - -uch _dist_code[DIST_CODE_LEN]; -/* Distance codes. The first 256 values correspond to the distances - * 3 .. 258, the last 256 values correspond to the top 8 bits of - * the 15 bit distances. - */ - -uch _length_code[MAX_MATCH-MIN_MATCH+1]; -/* length code for each normalized match length (0 == MIN_MATCH) */ - -local int base_length[LENGTH_CODES]; -/* First normalized length for each code (0 = MIN_MATCH) */ - -local int base_dist[D_CODES]; -/* First normalized distance for each code (0 = distance of 1) */ - -#else -# include "trees.h" -#endif /* GEN_TREES_H */ - -struct static_tree_desc_s { - const ct_data *static_tree; /* static tree or NULL */ - const intf *extra_bits; /* extra bits for each code or NULL */ - int extra_base; /* base index for extra_bits */ - int elems; /* max number of elements in the tree */ - int max_length; /* max bit length for the codes */ -}; - -local static_tree_desc static_l_desc = -{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS}; - -local static_tree_desc static_d_desc = -{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS}; - -local static_tree_desc static_bl_desc = -{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS}; - -/* =========================================================================== - * Local (static) routines in this file. - */ - -local void tr_static_init OF((void)); -local void init_block OF((deflate_state *s)); -local void pqdownheap OF((deflate_state *s, ct_data *tree, int k)); -local void gen_bitlen OF((deflate_state *s, tree_desc *desc)); -local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count)); -local void build_tree OF((deflate_state *s, tree_desc *desc)); -local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code)); -local void send_tree OF((deflate_state *s, ct_data *tree, int max_code)); -local int build_bl_tree OF((deflate_state *s)); -local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes, - int blcodes)); -local void compress_block OF((deflate_state *s, ct_data *ltree, - ct_data *dtree)); -local int detect_data_type OF((deflate_state *s)); -local unsigned bi_reverse OF((unsigned value, int length)); -local void bi_windup OF((deflate_state *s)); -local void bi_flush OF((deflate_state *s)); -local void copy_block OF((deflate_state *s, charf *buf, unsigned len, - int header)); - -#ifdef GEN_TREES_H -local void gen_trees_header OF((void)); -#endif - -#ifndef DEBUG_ZLIB -# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len) - /* Send a code of the given tree. c and tree must not have side effects */ - -#else /* DEBUG_ZLIB */ -# define send_code(s, c, tree) \ - { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \ - send_bits(s, tree[c].Code, tree[c].Len); } -#endif - -/* =========================================================================== - * Output a short LSB first on the stream. - * IN assertion: there is enough room in pendingBuf. - */ -#define put_short(s, w) { \ - put_byte(s, (uch)((w) & 0xff)); \ - put_byte(s, (uch)((ush)(w) >> 8)); \ -} - -/* =========================================================================== - * Send a value on a given number of bits. - * IN assertion: length <= 16 and value fits in length bits. - */ -#ifdef DEBUG_ZLIB -local void send_bits OF((deflate_state *s, int value, int length)); - -local void send_bits(s, value, length) - deflate_state *s; - int value; /* value to send */ - int length; /* number of bits */ -{ - Tracevv((stderr," l %2d v %4x ", length, value)); - Assert(length > 0 && length <= 15, "invalid length"); - s->bits_sent += (ulg)length; - - /* If not enough room in bi_buf, use (valid) bits from bi_buf and - * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid)) - * unused bits in value. - */ - if (s->bi_valid > (int)Buf_size - length) { - s->bi_buf |= (ush)value << s->bi_valid; - put_short(s, s->bi_buf); - s->bi_buf = (ush)value >> (Buf_size - s->bi_valid); - s->bi_valid += length - Buf_size; - } else { - s->bi_buf |= (ush)value << s->bi_valid; - s->bi_valid += length; - } -} -#else /* !DEBUG_ZLIB */ - -#define send_bits(s, value, length) \ -{ int len = length;\ - if (s->bi_valid > (int)Buf_size - len) {\ - int val = value;\ - s->bi_buf |= (ush)val << s->bi_valid;\ - put_short(s, s->bi_buf);\ - s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\ - s->bi_valid += len - Buf_size;\ - } else {\ - s->bi_buf |= (ush)(value) << s->bi_valid;\ - s->bi_valid += len;\ - }\ -} -#endif /* DEBUG_ZLIB */ - - -/* the arguments must not have side effects */ - -/* =========================================================================== - * Initialize the various 'constant' tables. - */ -local void tr_static_init() -{ -#if defined(GEN_TREES_H) || !defined(STDC) - static int static_init_done = 0; - int n; /* iterates over tree elements */ - int bits; /* bit counter */ - int length; /* length value */ - int code; /* code value */ - int dist; /* distance index */ - ush bl_count[MAX_BITS+1]; - /* number of codes at each bit length for an optimal tree */ - - if (static_init_done) return; - - /* For some embedded targets, global variables are not initialized: */ -#ifdef NO_INIT_GLOBAL_POINTERS - static_l_desc.static_tree = static_ltree; - static_l_desc.extra_bits = extra_lbits; - static_d_desc.static_tree = static_dtree; - static_d_desc.extra_bits = extra_dbits; - static_bl_desc.extra_bits = extra_blbits; -#endif - - /* Initialize the mapping length (0..255) -> length code (0..28) */ - length = 0; - for (code = 0; code < LENGTH_CODES-1; code++) { - base_length[code] = length; - for (n = 0; n < (1<<extra_lbits[code]); n++) { - _length_code[length++] = (uch)code; - } - } - Assert (length == 256, "tr_static_init: length != 256"); - /* Note that the length 255 (match length 258) can be represented - * in two different ways: code 284 + 5 bits or code 285, so we - * overwrite length_code[255] to use the best encoding: - */ - _length_code[length-1] = (uch)code; - - /* Initialize the mapping dist (0..32K) -> dist code (0..29) */ - dist = 0; - for (code = 0 ; code < 16; code++) { - base_dist[code] = dist; - for (n = 0; n < (1<<extra_dbits[code]); n++) { - _dist_code[dist++] = (uch)code; - } - } - Assert (dist == 256, "tr_static_init: dist != 256"); - dist >>= 7; /* from now on, all distances are divided by 128 */ - for ( ; code < D_CODES; code++) { - base_dist[code] = dist << 7; - for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) { - _dist_code[256 + dist++] = (uch)code; - } - } - Assert (dist == 256, "tr_static_init: 256+dist != 512"); - - /* Construct the codes of the static literal tree */ - for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0; - n = 0; - while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++; - while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++; - while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++; - while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++; - /* Codes 286 and 287 do not exist, but we must include them in the - * tree construction to get a canonical Huffman tree (longest code - * all ones) - */ - gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count); - - /* The static distance tree is trivial: */ - for (n = 0; n < D_CODES; n++) { - static_dtree[n].Len = 5; - static_dtree[n].Code = bi_reverse((unsigned)n, 5); - } - static_init_done = 1; - -# ifdef GEN_TREES_H - gen_trees_header(); -# endif -#endif /* defined(GEN_TREES_H) || !defined(STDC) */ -} - -/* =========================================================================== - * Genererate the file trees.h describing the static trees. - */ -#ifdef GEN_TREES_H -# ifndef DEBUG_ZLIB -# include <stdio.h> -# endif - -# define SEPARATOR(i, last, width) \ - ((i) == (last)? "\n};\n\n" : \ - ((i) % (width) == (width)-1 ? ",\n" : ", ")) - -void gen_trees_header() -{ - FILE *header = fopen("trees.h", "w"); - int i; - - Assert (header != NULL, "Can't open trees.h"); - fprintf(header, - "/* header created automatically with -DGEN_TREES_H */\n\n"); - - fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n"); - for (i = 0; i < L_CODES+2; i++) { - fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code, - static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5)); - } - - fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n"); - for (i = 0; i < D_CODES; i++) { - fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code, - static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5)); - } - - fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n"); - for (i = 0; i < DIST_CODE_LEN; i++) { - fprintf(header, "%2u%s", _dist_code[i], - SEPARATOR(i, DIST_CODE_LEN-1, 20)); - } - - fprintf(header, - "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n"); - for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) { - fprintf(header, "%2u%s", _length_code[i], - SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20)); - } - - fprintf(header, "local const int base_length[LENGTH_CODES] = {\n"); - for (i = 0; i < LENGTH_CODES; i++) { - fprintf(header, "%1u%s", base_length[i], - SEPARATOR(i, LENGTH_CODES-1, 20)); - } - - fprintf(header, "local const int base_dist[D_CODES] = {\n"); - for (i = 0; i < D_CODES; i++) { - fprintf(header, "%5u%s", base_dist[i], - SEPARATOR(i, D_CODES-1, 10)); - } - - fclose(header); -} -#endif /* GEN_TREES_H */ - -/* =========================================================================== - * Initialize the tree data structures for a new zlib stream. - */ -void ZLIB_INTERNAL _tr_init(s) - deflate_state *s; -{ - tr_static_init(); - - s->l_desc.dyn_tree = s->dyn_ltree; - s->l_desc.stat_desc = &static_l_desc; - - s->d_desc.dyn_tree = s->dyn_dtree; - s->d_desc.stat_desc = &static_d_desc; - - s->bl_desc.dyn_tree = s->bl_tree; - s->bl_desc.stat_desc = &static_bl_desc; - - s->bi_buf = 0; - s->bi_valid = 0; - s->last_eob_len = 8; /* enough lookahead for inflate */ -#ifdef DEBUG_ZLIB - s->compressed_len = 0L; - s->bits_sent = 0L; -#endif - - /* Initialize the first block of the first file: */ - init_block(s); -} - -/* =========================================================================== - * Initialize a new block. - */ -local void init_block(s) - deflate_state *s; -{ - int n; /* iterates over tree elements */ - - /* Initialize the trees. */ - for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0; - for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0; - for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0; - - s->dyn_ltree[END_BLOCK].Freq = 1; - s->opt_len = s->static_len = 0L; - s->last_lit = s->matches = 0; -} - -#define SMALLEST 1 -/* Index within the heap array of least frequent node in the Huffman tree */ - - -/* =========================================================================== - * Remove the smallest element from the heap and recreate the heap with - * one less element. Updates heap and heap_len. - */ -#define pqremove(s, tree, top) \ -{\ - top = s->heap[SMALLEST]; \ - s->heap[SMALLEST] = s->heap[s->heap_len--]; \ - pqdownheap(s, tree, SMALLEST); \ -} - -/* =========================================================================== - * Compares to subtrees, using the tree depth as tie breaker when - * the subtrees have equal frequency. This minimizes the worst case length. - */ -#define smaller(tree, n, m, depth) \ - (tree[n].Freq < tree[m].Freq || \ - (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m])) - -/* =========================================================================== - * Restore the heap property by moving down the tree starting at node k, - * exchanging a node with the smallest of its two sons if necessary, stopping - * when the heap property is re-established (each father smaller than its - * two sons). - */ -local void pqdownheap(s, tree, k) - deflate_state *s; - ct_data *tree; /* the tree to restore */ - int k; /* node to move down */ -{ - int v = s->heap[k]; - int j = k << 1; /* left son of k */ - while (j <= s->heap_len) { - /* Set j to the smallest of the two sons: */ - if (j < s->heap_len && - smaller(tree, s->heap[j+1], s->heap[j], s->depth)) { - j++; - } - /* Exit if v is smaller than both sons */ - if (smaller(tree, v, s->heap[j], s->depth)) break; - - /* Exchange v with the smallest son */ - s->heap[k] = s->heap[j]; k = j; - - /* And continue down the tree, setting j to the left son of k */ - j <<= 1; - } - s->heap[k] = v; -} - -/* =========================================================================== - * Compute the optimal bit lengths for a tree and update the total bit length - * for the current block. - * IN assertion: the fields freq and dad are set, heap[heap_max] and - * above are the tree nodes sorted by increasing frequency. - * OUT assertions: the field len is set to the optimal bit length, the - * array bl_count contains the frequencies for each bit length. - * The length opt_len is updated; static_len is also updated if stree is - * not null. - */ -local void gen_bitlen(s, desc) - deflate_state *s; - tree_desc *desc; /* the tree descriptor */ -{ - ct_data *tree = desc->dyn_tree; - int max_code = desc->max_code; - const ct_data *stree = desc->stat_desc->static_tree; - const intf *extra = desc->stat_desc->extra_bits; - int base = desc->stat_desc->extra_base; - int max_length = desc->stat_desc->max_length; - int h; /* heap index */ - int n, m; /* iterate over the tree elements */ - int bits; /* bit length */ - int xbits; /* extra bits */ - ush f; /* frequency */ - int overflow = 0; /* number of elements with bit length too large */ - - for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0; - - /* In a first pass, compute the optimal bit lengths (which may - * overflow in the case of the bit length tree). - */ - tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */ - - for (h = s->heap_max+1; h < HEAP_SIZE; h++) { - n = s->heap[h]; - bits = tree[tree[n].Dad].Len + 1; - if (bits > max_length) bits = max_length, overflow++; - tree[n].Len = (ush)bits; - /* We overwrite tree[n].Dad which is no longer needed */ - - if (n > max_code) continue; /* not a leaf node */ - - s->bl_count[bits]++; - xbits = 0; - if (n >= base) xbits = extra[n-base]; - f = tree[n].Freq; - s->opt_len += (ulg)f * (bits + xbits); - if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits); - } - if (overflow == 0) return; - - Trace((stderr,"\nbit length overflow\n")); - /* This happens for example on obj2 and pic of the Calgary corpus */ - - /* Find the first bit length which could increase: */ - do { - bits = max_length-1; - while (s->bl_count[bits] == 0) bits--; - s->bl_count[bits]--; /* move one leaf down the tree */ - s->bl_count[bits+1] += 2; /* move one overflow item as its brother */ - s->bl_count[max_length]--; - /* The brother of the overflow item also moves one step up, - * but this does not affect bl_count[max_length] - */ - overflow -= 2; - } while (overflow > 0); - - /* Now recompute all bit lengths, scanning in increasing frequency. - * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all - * lengths instead of fixing only the wrong ones. This idea is taken - * from 'ar' written by Haruhiko Okumura.) - */ - for (bits = max_length; bits != 0; bits--) { - n = s->bl_count[bits]; - while (n != 0) { - m = s->heap[--h]; - if (m > max_code) continue; - if ((unsigned) tree[m].Len != (unsigned) bits) { - Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); - s->opt_len += ((long)bits - (long)tree[m].Len) - *(long)tree[m].Freq; - tree[m].Len = (ush)bits; - } - n--; - } - } -} - -/* =========================================================================== - * Generate the codes for a given tree and bit counts (which need not be - * optimal). - * IN assertion: the array bl_count contains the bit length statistics for - * the given tree and the field len is set for all tree elements. - * OUT assertion: the field code is set for all tree elements of non - * zero code length. - */ -local void gen_codes (tree, max_code, bl_count) - ct_data *tree; /* the tree to decorate */ - int max_code; /* largest code with non zero frequency */ - ushf *bl_count; /* number of codes at each bit length */ -{ - ush next_code[MAX_BITS+1]; /* next code value for each bit length */ - ush code = 0; /* running code value */ - int bits; /* bit index */ - int n; /* code index */ - - /* The distribution counts are first used to generate the code values - * without bit reversal. - */ - for (bits = 1; bits <= MAX_BITS; bits++) { - next_code[bits] = code = (code + bl_count[bits-1]) << 1; - } - /* Check that the bit counts in bl_count are consistent. The last code - * must be all ones. - */ - Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1, - "inconsistent bit counts"); - Tracev((stderr,"\ngen_codes: max_code %d ", max_code)); - - for (n = 0; n <= max_code; n++) { - int len = tree[n].Len; - if (len == 0) continue; - /* Now reverse the bits */ - tree[n].Code = bi_reverse(next_code[len]++, len); - - Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ", - n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1)); - } -} - -/* =========================================================================== - * Construct one Huffman tree and assigns the code bit strings and lengths. - * Update the total bit length for the current block. - * IN assertion: the field freq is set for all tree elements. - * OUT assertions: the fields len and code are set to the optimal bit length - * and corresponding code. The length opt_len is updated; static_len is - * also updated if stree is not null. The field max_code is set. - */ -local void build_tree(s, desc) - deflate_state *s; - tree_desc *desc; /* the tree descriptor */ -{ - ct_data *tree = desc->dyn_tree; - const ct_data *stree = desc->stat_desc->static_tree; - int elems = desc->stat_desc->elems; - int n, m; /* iterate over heap elements */ - int max_code = -1; /* largest code with non zero frequency */ - int node; /* new node being created */ - - /* Construct the initial heap, with least frequent element in - * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. - * heap[0] is not used. - */ - s->heap_len = 0, s->heap_max = HEAP_SIZE; - - for (n = 0; n < elems; n++) { - if (tree[n].Freq != 0) { - s->heap[++(s->heap_len)] = max_code = n; - s->depth[n] = 0; - } else { - tree[n].Len = 0; - } - } - - /* The pkzip format requires that at least one distance code exists, - * and that at least one bit should be sent even if there is only one - * possible code. So to avoid special checks later on we force at least - * two codes of non zero frequency. - */ - while (s->heap_len < 2) { - node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0); - tree[node].Freq = 1; - s->depth[node] = 0; - s->opt_len--; if (stree) s->static_len -= stree[node].Len; - /* node is 0 or 1 so it does not have extra bits */ - } - desc->max_code = max_code; - - /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, - * establish sub-heaps of increasing lengths: - */ - for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n); - - /* Construct the Huffman tree by repeatedly combining the least two - * frequent nodes. - */ - node = elems; /* next internal node of the tree */ - do { - pqremove(s, tree, n); /* n = node of least frequency */ - m = s->heap[SMALLEST]; /* m = node of next least frequency */ - - s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */ - s->heap[--(s->heap_max)] = m; - - /* Create a new node father of n and m */ - tree[node].Freq = tree[n].Freq + tree[m].Freq; - s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ? - s->depth[n] : s->depth[m]) + 1); - tree[n].Dad = tree[m].Dad = (ush)node; -#ifdef DUMP_BL_TREE - if (tree == s->bl_tree) { - fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)", - node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq); - } -#endif - /* and insert the new node in the heap */ - s->heap[SMALLEST] = node++; - pqdownheap(s, tree, SMALLEST); - - } while (s->heap_len >= 2); - - s->heap[--(s->heap_max)] = s->heap[SMALLEST]; - - /* At this point, the fields freq and dad are set. We can now - * generate the bit lengths. - */ - gen_bitlen(s, (tree_desc *)desc); - - /* The field len is now set, we can generate the bit codes */ - gen_codes ((ct_data *)tree, max_code, s->bl_count); -} - -/* =========================================================================== - * Scan a literal or distance tree to determine the frequencies of the codes - * in the bit length tree. - */ -local void scan_tree (s, tree, max_code) - deflate_state *s; - ct_data *tree; /* the tree to be scanned */ - int max_code; /* and its largest code of non zero frequency */ -{ - int n; /* iterates over all tree elements */ - int prevlen = -1; /* last emitted length */ - int curlen; /* length of current code */ - int nextlen = tree[0].Len; /* length of next code */ - int count = 0; /* repeat count of the current code */ - int max_count = 7; /* max repeat count */ - int min_count = 4; /* min repeat count */ - - if (nextlen == 0) max_count = 138, min_count = 3; - tree[max_code+1].Len = (ush)0xffff; /* guard */ - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; nextlen = tree[n+1].Len; - if (++count < max_count && curlen == nextlen) { - continue; - } else if (count < min_count) { - s->bl_tree[curlen].Freq += count; - } else if (curlen != 0) { - if (curlen != prevlen) s->bl_tree[curlen].Freq++; - s->bl_tree[REP_3_6].Freq++; - } else if (count <= 10) { - s->bl_tree[REPZ_3_10].Freq++; - } else { - s->bl_tree[REPZ_11_138].Freq++; - } - count = 0; prevlen = curlen; - if (nextlen == 0) { - max_count = 138, min_count = 3; - } else if (curlen == nextlen) { - max_count = 6, min_count = 3; - } else { - max_count = 7, min_count = 4; - } - } -} - -/* =========================================================================== - * Send a literal or distance tree in compressed form, using the codes in - * bl_tree. - */ -local void send_tree (s, tree, max_code) - deflate_state *s; - ct_data *tree; /* the tree to be scanned */ - int max_code; /* and its largest code of non zero frequency */ -{ - int n; /* iterates over all tree elements */ - int prevlen = -1; /* last emitted length */ - int curlen; /* length of current code */ - int nextlen = tree[0].Len; /* length of next code */ - int count = 0; /* repeat count of the current code */ - int max_count = 7; /* max repeat count */ - int min_count = 4; /* min repeat count */ - - /* tree[max_code+1].Len = -1; */ /* guard already set */ - if (nextlen == 0) max_count = 138, min_count = 3; - - for (n = 0; n <= max_code; n++) { - curlen = nextlen; nextlen = tree[n+1].Len; - if (++count < max_count && curlen == nextlen) { - continue; - } else if (count < min_count) { - do { send_code(s, curlen, s->bl_tree); } while (--count != 0); - - } else if (curlen != 0) { - if (curlen != prevlen) { - send_code(s, curlen, s->bl_tree); count--; - } - Assert(count >= 3 && count <= 6, " 3_6?"); - send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2); - - } else if (count <= 10) { - send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3); - - } else { - send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7); - } - count = 0; prevlen = curlen; - if (nextlen == 0) { - max_count = 138, min_count = 3; - } else if (curlen == nextlen) { - max_count = 6, min_count = 3; - } else { - max_count = 7, min_count = 4; - } - } -} - -/* =========================================================================== - * Construct the Huffman tree for the bit lengths and return the index in - * bl_order of the last bit length code to send. - */ -local int build_bl_tree(s) - deflate_state *s; -{ - int max_blindex; /* index of last bit length code of non zero freq */ - - /* Determine the bit length frequencies for literal and distance trees */ - scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code); - scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code); - - /* Build the bit length tree: */ - build_tree(s, (tree_desc *)(&(s->bl_desc))); - /* opt_len now includes the length of the tree representations, except - * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. - */ - - /* Determine the number of bit length codes to send. The pkzip format - * requires that at least 4 bit length codes be sent. (appnote.txt says - * 3 but the actual value used is 4.) - */ - for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { - if (s->bl_tree[bl_order[max_blindex]].Len != 0) break; - } - /* Update opt_len to include the bit length tree and counts */ - s->opt_len += 3*(max_blindex+1) + 5+5+4; - Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", - s->opt_len, s->static_len)); - - return max_blindex; -} - -/* =========================================================================== - * Send the header for a block using dynamic Huffman trees: the counts, the - * lengths of the bit length codes, the literal tree and the distance tree. - * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. - */ -local void send_all_trees(s, lcodes, dcodes, blcodes) - deflate_state *s; - int lcodes, dcodes, blcodes; /* number of codes for each tree */ -{ - int rank; /* index in bl_order */ - - Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); - Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, - "too many codes"); - Tracev((stderr, "\nbl counts: ")); - send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ - send_bits(s, dcodes-1, 5); - send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ - for (rank = 0; rank < blcodes; rank++) { - Tracev((stderr, "\nbl code %2d ", bl_order[rank])); - send_bits(s, s->bl_tree[bl_order[rank]].Len, 3); - } - Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); - - send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */ - Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); - - send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */ - Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); -} - -/* =========================================================================== - * Send a stored block - */ -void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last) - deflate_state *s; - charf *buf; /* input block */ - ulg stored_len; /* length of input block */ - int last; /* one if this is the last block for a file */ -{ - send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */ -#ifdef DEBUG_ZLIB - s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L; - s->compressed_len += (stored_len + 4) << 3; -#endif - copy_block(s, buf, (unsigned)stored_len, 1); /* with header */ -} - -/* =========================================================================== - * Send one empty static block to give enough lookahead for inflate. - * This takes 10 bits, of which 7 may remain in the bit buffer. - * The current inflate code requires 9 bits of lookahead. If the - * last two codes for the previous block (real code plus EOB) were coded - * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode - * the last real code. In this case we send two empty static blocks instead - * of one. (There are no problems if the previous block is stored or fixed.) - * To simplify the code, we assume the worst case of last real code encoded - * on one bit only. - */ -void ZLIB_INTERNAL _tr_align(s) - deflate_state *s; -{ - send_bits(s, STATIC_TREES<<1, 3); - send_code(s, END_BLOCK, static_ltree); -#ifdef DEBUG_ZLIB - s->compressed_len += 10L; /* 3 for block type, 7 for EOB */ -#endif - bi_flush(s); - /* Of the 10 bits for the empty block, we have already sent - * (10 - bi_valid) bits. The lookahead for the last real code (before - * the EOB of the previous block) was thus at least one plus the length - * of the EOB plus what we have just sent of the empty static block. - */ - if (1 + s->last_eob_len + 10 - s->bi_valid < 9) { - send_bits(s, STATIC_TREES<<1, 3); - send_code(s, END_BLOCK, static_ltree); -#ifdef DEBUG_ZLIB - s->compressed_len += 10L; -#endif - bi_flush(s); - } - s->last_eob_len = 7; -} - -/* =========================================================================== - * Determine the best encoding for the current block: dynamic trees, static - * trees or store, and output the encoded block to the zip file. - */ -void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last) - deflate_state *s; - charf *buf; /* input block, or NULL if too old */ - ulg stored_len; /* length of input block */ - int last; /* one if this is the last block for a file */ -{ - ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */ - int max_blindex = 0; /* index of last bit length code of non zero freq */ - - /* Build the Huffman trees unless a stored block is forced */ - if (s->level > 0) { - - /* Check if the file is binary or text */ - if (s->strm->data_type == Z_UNKNOWN) - s->strm->data_type = detect_data_type(s); - - /* Construct the literal and distance trees */ - build_tree(s, (tree_desc *)(&(s->l_desc))); - Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, - s->static_len)); - - build_tree(s, (tree_desc *)(&(s->d_desc))); - Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, - s->static_len)); - /* At this point, opt_len and static_len are the total bit lengths of - * the compressed block data, excluding the tree representations. - */ - - /* Build the bit length tree for the above two trees, and get the index - * in bl_order of the last bit length code to send. - */ - max_blindex = build_bl_tree(s); - - /* Determine the best encoding. Compute the block lengths in bytes. */ - opt_lenb = (s->opt_len+3+7)>>3; - static_lenb = (s->static_len+3+7)>>3; - - Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", - opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, - s->last_lit)); - - if (static_lenb <= opt_lenb) opt_lenb = static_lenb; - - } else { - Assert(buf != (char*)0, "lost buf"); - opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ - } - -#ifdef FORCE_STORED - if (buf != (char*)0) { /* force stored block */ -#else - if (stored_len+4 <= opt_lenb && buf != (char*)0) { - /* 4: two words for the lengths */ -#endif - /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. - * Otherwise we can't have processed more than WSIZE input bytes since - * the last block flush, because compression would have been - * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to - * transform a block into a stored block. - */ - _tr_stored_block(s, buf, stored_len, last); - -#ifdef FORCE_STATIC - } else if (static_lenb >= 0) { /* force static trees */ -#else - } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) { -#endif - send_bits(s, (STATIC_TREES<<1)+last, 3); - compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree); -#ifdef DEBUG_ZLIB - s->compressed_len += 3 + s->static_len; -#endif - } else { - send_bits(s, (DYN_TREES<<1)+last, 3); - send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1, - max_blindex+1); - compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree); -#ifdef DEBUG_ZLIB - s->compressed_len += 3 + s->opt_len; -#endif - } - Assert (s->compressed_len == s->bits_sent, "bad compressed size"); - /* The above check is made mod 2^32, for files larger than 512 MB - * and uLong implemented on 32 bits. - */ - init_block(s); - - if (last) { - bi_windup(s); -#ifdef DEBUG_ZLIB - s->compressed_len += 7; /* align on byte boundary */ -#endif - } - Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, - s->compressed_len-7*last)); -} - -/* =========================================================================== - * Save the match info and tally the frequency counts. Return true if - * the current block must be flushed. - */ -int ZLIB_INTERNAL _tr_tally (s, dist, lc) - deflate_state *s; - unsigned dist; /* distance of matched string */ - unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ -{ - s->d_buf[s->last_lit] = (ush)dist; - s->l_buf[s->last_lit++] = (uch)lc; - if (dist == 0) { - /* lc is the unmatched char */ - s->dyn_ltree[lc].Freq++; - } else { - s->matches++; - /* Here, lc is the match length - MIN_MATCH */ - dist--; /* dist = match distance - 1 */ - Assert((ush)dist < (ush)MAX_DIST(s) && - (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && - (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); - - s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++; - s->dyn_dtree[d_code(dist)].Freq++; - } - -#ifdef TRUNCATE_BLOCK - /* Try to guess if it is profitable to stop the current block here */ - if ((s->last_lit & 0x1fff) == 0 && s->level > 2) { - /* Compute an upper bound for the compressed length */ - ulg out_length = (ulg)s->last_lit*8L; - ulg in_length = (ulg)((long)s->strstart - s->block_start); - int dcode; - for (dcode = 0; dcode < D_CODES; dcode++) { - out_length += (ulg)s->dyn_dtree[dcode].Freq * - (5L+extra_dbits[dcode]); - } - out_length >>= 3; - Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", - s->last_lit, in_length, out_length, - 100L - out_length*100L/in_length)); - if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1; - } -#endif - return (s->last_lit == s->lit_bufsize-1); - /* We avoid equality with lit_bufsize because of wraparound at 64K - * on 16 bit machines and because stored blocks are restricted to - * 64K-1 bytes. - */ -} - -/* =========================================================================== - * Send the block data compressed using the given Huffman trees - */ -local void compress_block(s, ltree, dtree) - deflate_state *s; - ct_data *ltree; /* literal tree */ - ct_data *dtree; /* distance tree */ -{ - unsigned dist; /* distance of matched string */ - int lc; /* match length or unmatched char (if dist == 0) */ - unsigned lx = 0; /* running index in l_buf */ - unsigned code; /* the code to send */ - int extra; /* number of extra bits to send */ - - if (s->last_lit != 0) do { - dist = s->d_buf[lx]; - lc = s->l_buf[lx++]; - if (dist == 0) { - send_code(s, lc, ltree); /* send a literal byte */ - Tracecv(isgraph(lc), (stderr," '%c' ", lc)); - } else { - /* Here, lc is the match length - MIN_MATCH */ - code = _length_code[lc]; - send_code(s, code+LITERALS+1, ltree); /* send the length code */ - extra = extra_lbits[code]; - if (extra != 0) { - lc -= base_length[code]; - send_bits(s, lc, extra); /* send the extra length bits */ - } - dist--; /* dist is now the match distance - 1 */ - code = d_code(dist); - Assert (code < D_CODES, "bad d_code"); - - send_code(s, code, dtree); /* send the distance code */ - extra = extra_dbits[code]; - if (extra != 0) { - dist -= base_dist[code]; - send_bits(s, dist, extra); /* send the extra distance bits */ - } - } /* literal or match pair ? */ - - /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ - Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, - "pendingBuf overflow"); - - } while (lx < s->last_lit); - - send_code(s, END_BLOCK, ltree); - s->last_eob_len = ltree[END_BLOCK].Len; -} - -/* =========================================================================== - * Check if the data type is TEXT or BINARY, using the following algorithm: - * - TEXT if the two conditions below are satisfied: - * a) There are no non-portable control characters belonging to the - * "black list" (0..6, 14..25, 28..31). - * b) There is at least one printable character belonging to the - * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). - * - BINARY otherwise. - * - The following partially-portable control characters form a - * "gray list" that is ignored in this detection algorithm: - * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). - * IN assertion: the fields Freq of dyn_ltree are set. - */ -local int detect_data_type(s) - deflate_state *s; -{ - /* black_mask is the bit mask of black-listed bytes - * set bits 0..6, 14..25, and 28..31 - * 0xf3ffc07f = binary 11110011111111111100000001111111 - */ - unsigned long black_mask = 0xf3ffc07fUL; - int n; - - /* Check for non-textual ("black-listed") bytes. */ - for (n = 0; n <= 31; n++, black_mask >>= 1) - if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0)) - return Z_BINARY; - - /* Check for textual ("white-listed") bytes. */ - if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0 - || s->dyn_ltree[13].Freq != 0) - return Z_TEXT; - for (n = 32; n < LITERALS; n++) - if (s->dyn_ltree[n].Freq != 0) - return Z_TEXT; - - /* There are no "black-listed" or "white-listed" bytes: - * this stream either is empty or has tolerated ("gray-listed") bytes only. - */ - return Z_BINARY; -} - -/* =========================================================================== - * Reverse the first len bits of a code, using straightforward code (a faster - * method would use a table) - * IN assertion: 1 <= len <= 15 - */ -local unsigned bi_reverse(code, len) - unsigned code; /* the value to invert */ - int len; /* its bit length */ -{ - register unsigned res = 0; - do { - res |= code & 1; - code >>= 1, res <<= 1; - } while (--len > 0); - return res >> 1; -} - -/* =========================================================================== - * Flush the bit buffer, keeping at most 7 bits in it. - */ -local void bi_flush(s) - deflate_state *s; -{ - if (s->bi_valid == 16) { - put_short(s, s->bi_buf); - s->bi_buf = 0; - s->bi_valid = 0; - } else if (s->bi_valid >= 8) { - put_byte(s, (Byte)s->bi_buf); - s->bi_buf >>= 8; - s->bi_valid -= 8; - } -} - -/* =========================================================================== - * Flush the bit buffer and align the output on a byte boundary - */ -local void bi_windup(s) - deflate_state *s; -{ - if (s->bi_valid > 8) { - put_short(s, s->bi_buf); - } else if (s->bi_valid > 0) { - put_byte(s, (Byte)s->bi_buf); - } - s->bi_buf = 0; - s->bi_valid = 0; -#ifdef DEBUG_ZLIB - s->bits_sent = (s->bits_sent+7) & ~7; -#endif -} - -/* =========================================================================== - * Copy a stored block, storing first the length and its - * one's complement if requested. - */ -local void copy_block(s, buf, len, header) - deflate_state *s; - charf *buf; /* the input data */ - unsigned len; /* its length */ - int header; /* true if block header must be written */ -{ - bi_windup(s); /* align on byte boundary */ - s->last_eob_len = 8; /* enough lookahead for inflate */ - - if (header) { - put_short(s, (ush)len); - put_short(s, (ush)~len); -#ifdef DEBUG_ZLIB - s->bits_sent += 2*16; -#endif - } -#ifdef DEBUG_ZLIB - s->bits_sent += (ulg)len<<3; -#endif - while (len--) { - put_byte(s, *buf++); - } -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.h deleted file mode 100644 index d35639d..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/trees.h +++ /dev/null @@ -1,128 +0,0 @@ -/* header created automatically with -DGEN_TREES_H */ - -local const ct_data static_ltree[L_CODES+2] = { -{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}}, -{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}}, -{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}}, -{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}}, -{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}}, -{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}}, -{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}}, -{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}}, -{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}}, -{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}}, -{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}}, -{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}}, -{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}}, -{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}}, -{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}}, -{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}}, -{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}}, -{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}}, -{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}}, -{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}}, -{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}}, -{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}}, -{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}}, -{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}}, -{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}}, -{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}}, -{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}}, -{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}}, -{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}}, -{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}}, -{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}}, -{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}}, -{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}}, -{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}}, -{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}}, -{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}}, -{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}}, -{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}}, -{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}}, -{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}}, -{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}}, -{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}}, -{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}}, -{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}}, -{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}}, -{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}}, -{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}}, -{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}}, -{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}}, -{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}}, -{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}}, -{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}}, -{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}}, -{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}}, -{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}}, -{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}}, -{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}}, -{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}} -}; - -local const ct_data static_dtree[D_CODES] = { -{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}}, -{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}}, -{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}}, -{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}}, -{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}}, -{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}} -}; - -const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = { - 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, - 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, -10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, -11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, -12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, -13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, -13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, -14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, -15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17, -18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, -23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, -28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, -29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29 -}; - -const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12, -13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, -17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, -19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, -21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, -22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, -23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, -25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, -25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, -26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, -27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28 -}; - -local const int base_length[LENGTH_CODES] = { -0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, -64, 80, 96, 112, 128, 160, 192, 224, 0 -}; - -local const int base_dist[D_CODES] = { - 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, - 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, - 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576 -}; - diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/uncompr.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/uncompr.c deleted file mode 100644 index ad98be3..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/uncompr.c +++ /dev/null @@ -1,59 +0,0 @@ -/* uncompr.c -- decompress a memory buffer - * Copyright (C) 1995-2003, 2010 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#define ZLIB_INTERNAL -#include "zlib.h" - -/* =========================================================================== - Decompresses the source buffer into the destination buffer. sourceLen is - the byte length of the source buffer. Upon entry, destLen is the total - size of the destination buffer, which must be large enough to hold the - entire uncompressed data. (The size of the uncompressed data must have - been saved previously by the compressor and transmitted to the decompressor - by some mechanism outside the scope of this compression library.) - Upon exit, destLen is the actual size of the compressed buffer. - - uncompress returns Z_OK if success, Z_MEM_ERROR if there was not - enough memory, Z_BUF_ERROR if there was not enough room in the output - buffer, or Z_DATA_ERROR if the input data was corrupted. -*/ -int ZEXPORT uncompress (dest, destLen, source, sourceLen) - Bytef *dest; - uLongf *destLen; - const Bytef *source; - uLong sourceLen; -{ - z_stream stream; - int err; - - stream.next_in = (Bytef*)source; - stream.avail_in = (uInt)sourceLen; - /* Check for source > 64K on 16-bit machine: */ - if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; - - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)0; - stream.zfree = (free_func)0; - - err = inflateInit(&stream); - if (err != Z_OK) return err; - - err = inflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - inflateEnd(&stream); - if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) - return Z_DATA_ERROR; - return err; - } - *destLen = stream.total_out; - - err = inflateEnd(&stream); - return err; -} diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zconf.in.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zconf.in.h deleted file mode 100644 index 5d10eaa..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zconf.in.h +++ /dev/null @@ -1,322 +0,0 @@ -/* zconf.h -- configuration of the zlib compression library - * Copyright (C) 1995-2003 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - - -#ifndef ZCONF_H -#define ZCONF_H - -/* - * If you *really* need a unique prefix for all types and library functions, - * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. - */ -#ifdef Z_PREFIX -# define deflateInit_ z_deflateInit_ -# define deflate z_deflate -# define deflateEnd z_deflateEnd -# define inflateInit_ z_inflateInit_ -# define inflate z_inflate -# define inflateEnd z_inflateEnd -# define deflateInit2_ z_deflateInit2_ -# define deflateSetDictionary z_deflateSetDictionary -# define deflateCopy z_deflateCopy -# define deflateReset z_deflateReset -# define deflatePrime z_deflatePrime -# define deflateParams z_deflateParams -# define deflateBound z_deflateBound -# define inflateInit2_ z_inflateInit2_ -# define inflateSetDictionary z_inflateSetDictionary -# define inflateSync z_inflateSync -# define inflateSyncPoint z_inflateSyncPoint -# define inflateCopy z_inflateCopy -# define inflateReset z_inflateReset -# define compress z_compress -# define compress2 z_compress2 -# define compressBound z_compressBound -# define uncompress z_uncompress -# define adler32 z_adler32 -# define crc32 z_crc32 -# define get_crc_table z_get_crc_table - -# define Byte z_Byte -# define uInt z_uInt -# define uLong z_uLong -# define Bytef z_Bytef -# define charf z_charf -# define intf z_intf -# define uIntf z_uIntf -# define uLongf z_uLongf -# define voidpf z_voidpf -# define voidp z_voidp -#endif - -#if defined(__MSDOS__) && !defined(MSDOS) -# define MSDOS -#endif -#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) -# define OS2 -#endif -#if defined(_WINDOWS) && !defined(WINDOWS) -# define WINDOWS -#endif -#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) -# define WIN32 -#endif -#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) -# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) -# ifndef SYS16BIT -# define SYS16BIT -# endif -# endif -#endif - -/* - * Compile with -DMAXSEG_64K if the alloc function cannot allocate more - * than 64k bytes at a time (needed on systems with 16-bit int). - */ -#ifdef SYS16BIT -# define MAXSEG_64K -#endif -#ifdef MSDOS -# define UNALIGNED_OK -#endif - -#ifdef __STDC_VERSION__ -# ifndef STDC -# define STDC -# endif -# if __STDC_VERSION__ >= 199901L -# ifndef STDC99 -# define STDC99 -# endif -# endif -#endif -#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) -# define STDC -#endif -#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) -# define STDC -#endif -#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) -# define STDC -#endif -#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) -# define STDC -#endif - -#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ -# define STDC -#endif - -#ifndef STDC -# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ -# define const /* note: need a more gentle solution here */ -# endif -#endif - -/* Some Mac compilers merge all .h files incorrectly: */ -#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__) -# define NO_DUMMY_DECL -#endif - -/* Maximum value for memLevel in deflateInit2 */ -#ifndef MAX_MEM_LEVEL -# ifdef MAXSEG_64K -# define MAX_MEM_LEVEL 8 -# else -# define MAX_MEM_LEVEL 9 -# endif -#endif - -/* Maximum value for windowBits in deflateInit2 and inflateInit2. - * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files - * created by gzip. (Files created by minigzip can still be extracted by - * gzip.) - */ -#ifndef MAX_WBITS -# define MAX_WBITS 15 /* 32K LZ77 window */ -#endif - -/* The memory requirements for deflate are (in bytes): - (1 << (windowBits+2)) + (1 << (memLevel+9)) - that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) - plus a few kilobytes for small objects. For example, if you want to reduce - the default memory requirements from 256K to 128K, compile with - make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" - Of course this will generally degrade compression (there's no free lunch). - - The memory requirements for inflate are (in bytes) 1 << windowBits - that is, 32K for windowBits=15 (default value) plus a few kilobytes - for small objects. -*/ - - /* Type declarations */ - -#ifndef OF /* function prototypes */ -# ifdef STDC -# define OF(args) args -# else -# define OF(args) () -# endif -#endif - -/* The following definitions for FAR are needed only for MSDOS mixed - * model programming (small or medium model with some far allocations). - * This was tested only with MSC; for other MSDOS compilers you may have - * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, - * just define FAR to be empty. - */ -#ifdef SYS16BIT -# if defined(M_I86SM) || defined(M_I86MM) - /* MSC small or medium model */ -# define SMALL_MEDIUM -# ifdef _MSC_VER -# define FAR _far -# else -# define FAR far -# endif -# endif -# if (defined(__SMALL__) || defined(__MEDIUM__)) - /* Turbo C small or medium model */ -# define SMALL_MEDIUM -# ifdef __BORLANDC__ -# define FAR _far -# else -# define FAR far -# endif -# endif -#endif - -#if defined(WINDOWS) || defined(WIN32) - /* If building or using zlib as a DLL, define ZLIB_DLL. - * This is not mandatory, but it offers a little performance increase. - */ -# ifdef ZLIB_DLL -# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) -# ifdef ZLIB_INTERNAL -# define ZEXTERN extern __declspec(dllexport) -# else -# define ZEXTERN extern __declspec(dllimport) -# endif -# endif -# endif /* ZLIB_DLL */ - /* If building or using zlib with the WINAPI/WINAPIV calling convention, - * define ZLIB_WINAPI. - * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. - */ -# ifdef ZLIB_WINAPI -# ifdef FAR -# undef FAR -# endif -# include <windows.h> - /* No need for _export, use ZLIB.DEF instead. */ - /* For complete Windows compatibility, use WINAPI, not __stdcall. */ -# define ZEXPORT WINAPI -# ifdef WIN32 -# define ZEXPORTVA WINAPIV -# else -# define ZEXPORTVA FAR CDECL -# endif -# endif -#endif - -#if defined (__BEOS__) -# ifdef ZLIB_DLL -# ifdef ZLIB_INTERNAL -# define ZEXPORT __declspec(dllexport) -# define ZEXPORTVA __declspec(dllexport) -# else -# define ZEXPORT __declspec(dllimport) -# define ZEXPORTVA __declspec(dllimport) -# endif -# endif -#endif - -#ifndef ZEXTERN -# define ZEXTERN extern -#endif -#ifndef ZEXPORT -# define ZEXPORT -#endif -#ifndef ZEXPORTVA -# define ZEXPORTVA -#endif - -#ifndef FAR -# define FAR -#endif - -#if !defined(__MACTYPES__) -typedef unsigned char Byte; /* 8 bits */ -#endif -typedef unsigned int uInt; /* 16 bits or more */ -typedef unsigned long uLong; /* 32 bits or more */ - -#ifdef SMALL_MEDIUM - /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ -# define Bytef Byte FAR -#else - typedef Byte FAR Bytef; -#endif -typedef char FAR charf; -typedef int FAR intf; -typedef uInt FAR uIntf; -typedef uLong FAR uLongf; - -#ifdef STDC - typedef void const *voidpc; - typedef void FAR *voidpf; - typedef void *voidp; -#else - typedef Byte const *voidpc; - typedef Byte FAR *voidpf; - typedef Byte *voidp; -#endif - -#if 0 /* HAVE_UNISTD_H -- this line is updated by ./configure */ -# include <sys/types.h> /* for off_t */ -# include <unistd.h> /* for SEEK_* and off_t */ -# ifdef VMS -# include <unixio.h> /* for off_t */ -# endif -# define z_off_t off_t -#endif -#ifndef SEEK_SET -# define SEEK_SET 0 /* Seek from beginning of file. */ -# define SEEK_CUR 1 /* Seek from current position. */ -# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ -#endif -#ifndef z_off_t -# define z_off_t long -#endif - -#if defined(__OS400__) -#define NO_vsnprintf -#endif - -#if defined(__MVS__) -# define NO_vsnprintf -# ifdef FAR -# undef FAR -# endif -#endif - -/* MVS linker does not support external names larger than 8 bytes */ -#if defined(__MVS__) -# pragma map(deflateInit_,"DEIN") -# pragma map(deflateInit2_,"DEIN2") -# pragma map(deflateEnd,"DEEND") -# pragma map(deflateBound,"DEBND") -# pragma map(inflateInit_,"ININ") -# pragma map(inflateInit2_,"ININ2") -# pragma map(inflateEnd,"INEND") -# pragma map(inflateSync,"INSY") -# pragma map(inflateSetDictionary,"INSEDI") -# pragma map(compressBound,"CMBND") -# pragma map(inflate_table,"INTABL") -# pragma map(inflate_fast,"INFA") -# pragma map(inflate_copyright,"INCOPY") -#endif - -#endif /* ZCONF_H */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zlib.3 b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zlib.3 deleted file mode 100644 index 27adc4c..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zlib.3 +++ /dev/null @@ -1,151 +0,0 @@ -.TH ZLIB 3 "19 Apr 2010" -.SH NAME -zlib \- compression/decompression library -.SH SYNOPSIS -[see -.I zlib.h -for full description] -.SH DESCRIPTION -The -.I zlib -library is a general purpose data compression library. -The code is thread safe, assuming that the standard library functions -used are thread safe, such as memory allocation routines. -It provides in-memory compression and decompression functions, -including integrity checks of the uncompressed data. -This version of the library supports only one compression method (deflation) -but other algorithms may be added later -with the same stream interface. -.LP -Compression can be done in a single step if the buffers are large enough -or can be done by repeated calls of the compression function. -In the latter case, -the application must provide more input and/or consume the output -(providing more output space) before each call. -.LP -The library also supports reading and writing files in -.IR gzip (1) -(.gz) format -with an interface similar to that of stdio. -.LP -The library does not install any signal handler. -The decoder checks the consistency of the compressed data, -so the library should never crash even in the case of corrupted input. -.LP -All functions of the compression library are documented in the file -.IR zlib.h . -The distribution source includes examples of use of the library -in the files -.I example.c -and -.IR minigzip.c, -as well as other examples in the -.IR examples/ -directory. -.LP -Changes to this version are documented in the file -.I ChangeLog -that accompanies the source. -.LP -.I zlib -is available in Java using the java.util.zip package: -.IP -http://java.sun.com/developer/technicalArticles/Programming/compression/ -.LP -A Perl interface to -.IR zlib , -written by Paul Marquess (pmqs@cpan.org), -is available at CPAN (Comprehensive Perl Archive Network) sites, -including: -.IP -http://search.cpan.org/~pmqs/IO-Compress-Zlib/ -.LP -A Python interface to -.IR zlib , -written by A.M. Kuchling (amk@magnet.com), -is available in Python 1.5 and later versions: -.IP -http://www.python.org/doc/lib/module-zlib.html -.LP -.I zlib -is built into -.IR tcl: -.IP -http://wiki.tcl.tk/4610 -.LP -An experimental package to read and write files in .zip format, -written on top of -.I zlib -by Gilles Vollant (info@winimage.com), -is available at: -.IP -http://www.winimage.com/zLibDll/minizip.html -and also in the -.I contrib/minizip -directory of the main -.I zlib -source distribution. -.SH "SEE ALSO" -The -.I zlib -web site can be found at: -.IP -http://zlib.net/ -.LP -The data format used by the zlib library is described by RFC -(Request for Comments) 1950 to 1952 in the files: -.IP -http://www.ietf.org/rfc/rfc1950.txt (for the zlib header and trailer format) -.br -http://www.ietf.org/rfc/rfc1951.txt (for the deflate compressed data format) -.br -http://www.ietf.org/rfc/rfc1952.txt (for the gzip header and trailer format) -.LP -Mark Nelson wrote an article about -.I zlib -for the Jan. 1997 issue of Dr. Dobb's Journal; -a copy of the article is available at: -.IP -http://marknelson.us/1997/01/01/zlib-engine/ -.SH "REPORTING PROBLEMS" -Before reporting a problem, -please check the -.I zlib -web site to verify that you have the latest version of -.IR zlib ; -otherwise, -obtain the latest version and see if the problem still exists. -Please read the -.I zlib -FAQ at: -.IP -http://zlib.net/zlib_faq.html -.LP -before asking for help. -Send questions and/or comments to zlib@gzip.org, -or (for the Windows DLL version) to Gilles Vollant (info@winimage.com). -.SH AUTHORS -Version 1.2.5 -Copyright (C) 1995-2010 Jean-loup Gailly (jloup@gzip.org) -and Mark Adler (madler@alumni.caltech.edu). -.LP -This software is provided "as-is," -without any express or implied warranty. -In no event will the authors be held liable for any damages -arising from the use of this software. -See the distribution directory with respect to requirements -governing redistribution. -The deflate format used by -.I zlib -was defined by Phil Katz. -The deflate and -.I zlib -specifications were written by L. Peter Deutsch. -Thanks to all the people who reported problems and suggested various -improvements in -.IR zlib ; -who are too numerous to cite here. -.LP -UNIX manual page by R. P. C. Rodgers, -U.S. National Library of Medicine (rodgers@nlm.nih.gov). -.\" end of man page diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.c b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.c deleted file mode 100644 index 3ce8976..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.c +++ /dev/null @@ -1,318 +0,0 @@ -/* zutil.c -- target dependent utility functions for the compression library - * Copyright (C) 1995-2005, 2010 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* @(#) $Id$ */ - -#include "zutil.h" - -#ifndef NO_DUMMY_DECL -struct internal_state {int dummy;}; /* for buggy compilers */ -#endif - -const char * const z_errmsg[10] = { -"need dictionary", /* Z_NEED_DICT 2 */ -"stream end", /* Z_STREAM_END 1 */ -"", /* Z_OK 0 */ -"file error", /* Z_ERRNO (-1) */ -"stream error", /* Z_STREAM_ERROR (-2) */ -"data error", /* Z_DATA_ERROR (-3) */ -"insufficient memory", /* Z_MEM_ERROR (-4) */ -"buffer error", /* Z_BUF_ERROR (-5) */ -"incompatible version",/* Z_VERSION_ERROR (-6) */ -""}; - - -const char * ZEXPORT zlibVersion() -{ - return ZLIB_VERSION; -} - -uLong ZEXPORT zlibCompileFlags() -{ - uLong flags; - - flags = 0; - switch ((int)(sizeof(uInt))) { - case 2: break; - case 4: flags += 1; break; - case 8: flags += 2; break; - default: flags += 3; - } - switch ((int)(sizeof(uLong))) { - case 2: break; - case 4: flags += 1 << 2; break; - case 8: flags += 2 << 2; break; - default: flags += 3 << 2; - } - switch ((int)(sizeof(voidpf))) { - case 2: break; - case 4: flags += 1 << 4; break; - case 8: flags += 2 << 4; break; - default: flags += 3 << 4; - } - switch ((int)(sizeof(z_off_t))) { - case 2: break; - case 4: flags += 1 << 6; break; - case 8: flags += 2 << 6; break; - default: flags += 3 << 6; - } -#ifdef DEBUG_ZLIB - flags += 1 << 8; -#endif -#if defined(ASMV) || defined(ASMINF) - flags += 1 << 9; -#endif -#ifdef ZLIB_WINAPI - flags += 1 << 10; -#endif -#ifdef BUILDFIXED - flags += 1 << 12; -#endif -#ifdef DYNAMIC_CRC_TABLE - flags += 1 << 13; -#endif -#ifdef NO_GZCOMPRESS - flags += 1L << 16; -#endif -#ifdef NO_GZIP - flags += 1L << 17; -#endif -#ifdef PKZIP_BUG_WORKAROUND - flags += 1L << 20; -#endif -#ifdef FASTEST - flags += 1L << 21; -#endif -#ifdef STDC -# ifdef NO_vsnprintf - flags += 1L << 25; -# ifdef HAS_vsprintf_void - flags += 1L << 26; -# endif -# else -# ifdef HAS_vsnprintf_void - flags += 1L << 26; -# endif -# endif -#else - flags += 1L << 24; -# ifdef NO_snprintf - flags += 1L << 25; -# ifdef HAS_sprintf_void - flags += 1L << 26; -# endif -# else -# ifdef HAS_snprintf_void - flags += 1L << 26; -# endif -# endif -#endif - return flags; -} - -#ifdef DEBUG_ZLIB - -# ifndef verbose -# define verbose 0 -# endif -int ZLIB_INTERNAL z_verbose = verbose; - -void ZLIB_INTERNAL z_error (m) - char *m; -{ - fprintf(stderr, "%s\n", m); - exit(1); -} -#endif - -/* exported to allow conversion of error code to string for compress() and - * uncompress() - */ -const char * ZEXPORT zError(err) - int err; -{ - return ERR_MSG(err); -} - -#if defined(_WIN32_WCE) - /* The Microsoft C Run-Time Library for Windows CE doesn't have - * errno. We define it as a global variable to simplify porting. - * Its value is always 0 and should not be used. - */ - int errno = 0; -#endif - -#ifndef HAVE_MEMCPY - -void ZLIB_INTERNAL zmemcpy(dest, source, len) - Bytef* dest; - const Bytef* source; - uInt len; -{ - if (len == 0) return; - do { - *dest++ = *source++; /* ??? to be unrolled */ - } while (--len != 0); -} - -int ZLIB_INTERNAL zmemcmp(s1, s2, len) - const Bytef* s1; - const Bytef* s2; - uInt len; -{ - uInt j; - - for (j = 0; j < len; j++) { - if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1; - } - return 0; -} - -void ZLIB_INTERNAL zmemzero(dest, len) - Bytef* dest; - uInt len; -{ - if (len == 0) return; - do { - *dest++ = 0; /* ??? to be unrolled */ - } while (--len != 0); -} -#endif - - -#ifdef SYS16BIT - -#ifdef __TURBOC__ -/* Turbo C in 16-bit mode */ - -# define MY_ZCALLOC - -/* Turbo C malloc() does not allow dynamic allocation of 64K bytes - * and farmalloc(64K) returns a pointer with an offset of 8, so we - * must fix the pointer. Warning: the pointer must be put back to its - * original form in order to free it, use zcfree(). - */ - -#define MAX_PTR 10 -/* 10*64K = 640K */ - -local int next_ptr = 0; - -typedef struct ptr_table_s { - voidpf org_ptr; - voidpf new_ptr; -} ptr_table; - -local ptr_table table[MAX_PTR]; -/* This table is used to remember the original form of pointers - * to large buffers (64K). Such pointers are normalized with a zero offset. - * Since MSDOS is not a preemptive multitasking OS, this table is not - * protected from concurrent access. This hack doesn't work anyway on - * a protected system like OS/2. Use Microsoft C instead. - */ - -voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size) -{ - voidpf buf = opaque; /* just to make some compilers happy */ - ulg bsize = (ulg)items*size; - - /* If we allocate less than 65520 bytes, we assume that farmalloc - * will return a usable pointer which doesn't have to be normalized. - */ - if (bsize < 65520L) { - buf = farmalloc(bsize); - if (*(ush*)&buf != 0) return buf; - } else { - buf = farmalloc(bsize + 16L); - } - if (buf == NULL || next_ptr >= MAX_PTR) return NULL; - table[next_ptr].org_ptr = buf; - - /* Normalize the pointer to seg:0 */ - *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4; - *(ush*)&buf = 0; - table[next_ptr++].new_ptr = buf; - return buf; -} - -void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) -{ - int n; - if (*(ush*)&ptr != 0) { /* object < 64K */ - farfree(ptr); - return; - } - /* Find the original pointer */ - for (n = 0; n < next_ptr; n++) { - if (ptr != table[n].new_ptr) continue; - - farfree(table[n].org_ptr); - while (++n < next_ptr) { - table[n-1] = table[n]; - } - next_ptr--; - return; - } - ptr = opaque; /* just to make some compilers happy */ - Assert(0, "zcfree: ptr not found"); -} - -#endif /* __TURBOC__ */ - - -#ifdef M_I86 -/* Microsoft C in 16-bit mode */ - -# define MY_ZCALLOC - -#if (!defined(_MSC_VER) || (_MSC_VER <= 600)) -# define _halloc halloc -# define _hfree hfree -#endif - -voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size) -{ - if (opaque) opaque = 0; /* to make compiler happy */ - return _halloc((long)items, size); -} - -void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) -{ - if (opaque) opaque = 0; /* to make compiler happy */ - _hfree(ptr); -} - -#endif /* M_I86 */ - -#endif /* SYS16BIT */ - - -#ifndef MY_ZCALLOC /* Any system without a special alloc function */ - -#ifndef STDC -extern voidp malloc OF((uInt size)); -extern voidp calloc OF((uInt items, uInt size)); -extern void free OF((voidpf ptr)); -#endif - -voidpf ZLIB_INTERNAL zcalloc (opaque, items, size) - voidpf opaque; - unsigned items; - unsigned size; -{ - if (opaque) items += size - size; /* make compiler happy */ - return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) : - (voidpf)calloc(items, size); -} - -void ZLIB_INTERNAL zcfree (opaque, ptr) - voidpf opaque; - voidpf ptr; -{ - free(ptr); - if (opaque) return; /* make compiler happy */ -} - -#endif /* MY_ZCALLOC */ diff --git a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.h b/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.h deleted file mode 100644 index ac2d73e..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lib/zlib/zutil.h +++ /dev/null @@ -1,274 +0,0 @@ -/* zutil.h -- internal interface and configuration of the compression library - * Copyright (C) 1995-2010 Jean-loup Gailly. - * For conditions of distribution and use, see copyright notice in zlib.h - */ - -/* WARNING: this file should *not* be used by applications. It is - part of the implementation of the compression library and is - subject to change. Applications should only use zlib.h. - */ - -/* @(#) $Id$ */ - -#ifndef ZUTIL_H -#define ZUTIL_H - -#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) -# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) -#else -# define ZLIB_INTERNAL -#endif - -#include "zlib.h" - -#ifdef STDC -# if !(defined(_WIN32_WCE) && defined(_MSC_VER)) -# include <stddef.h> -# endif -# include <string.h> -# include <stdlib.h> -#endif - -#ifndef local -# define local static -#endif -/* compile with -Dlocal if your debugger can't find static symbols */ - -typedef unsigned char uch; -typedef uch FAR uchf; -typedef unsigned short ush; -typedef ush FAR ushf; -typedef unsigned long ulg; - -extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ -/* (size given to avoid silly warnings with Visual C++) */ - -#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] - -#define ERR_RETURN(strm,err) \ - return (strm->msg = (char*)ERR_MSG(err), (err)) -/* To be used only when the state is known to be valid */ - - /* common constants */ - -#ifndef DEF_WBITS -# define DEF_WBITS MAX_WBITS -#endif -/* default windowBits for decompression. MAX_WBITS is for compression only */ - -#if MAX_MEM_LEVEL >= 8 -# define DEF_MEM_LEVEL 8 -#else -# define DEF_MEM_LEVEL MAX_MEM_LEVEL -#endif -/* default memLevel */ - -#define STORED_BLOCK 0 -#define STATIC_TREES 1 -#define DYN_TREES 2 -/* The three kinds of block type */ - -#define MIN_MATCH 3 -#define MAX_MATCH 258 -/* The minimum and maximum match lengths */ - -#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ - - /* target dependencies */ - -#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) -# define OS_CODE 0x00 -# if defined(__TURBOC__) || defined(__BORLANDC__) -# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) - /* Allow compilation with ANSI keywords only enabled */ - void _Cdecl farfree( void *block ); - void *_Cdecl farmalloc( unsigned long nbytes ); -# else -# include <alloc.h> -# endif -# else /* MSC or DJGPP */ -# include <malloc.h> -# endif -#endif - -#ifdef AMIGA -# define OS_CODE 0x01 -#endif - -#if defined(VAXC) || defined(VMS) -# define OS_CODE 0x02 -# define F_OPEN(name, mode) \ - fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") -#endif - -#if defined(ATARI) || defined(atarist) -# define OS_CODE 0x05 -#endif - -#ifdef OS2 -# define OS_CODE 0x06 -# ifdef M_I86 -# include <malloc.h> -# endif -#endif - -#if defined(MACOS) || defined(TARGET_OS_MAC) -# define OS_CODE 0x07 -# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os -# include <unix.h> /* for fdopen */ -# else -# ifndef fdopen -# define fdopen(fd,mode) NULL /* No fdopen() */ -# endif -# endif -#endif - -#ifdef TOPS20 -# define OS_CODE 0x0a -#endif - -#ifdef WIN32 -# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ -# define OS_CODE 0x0b -# endif -#endif - -#ifdef __50SERIES /* Prime/PRIMOS */ -# define OS_CODE 0x0f -#endif - -#if defined(_BEOS_) || defined(RISCOS) -# define fdopen(fd,mode) NULL /* No fdopen() */ -#endif - -#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX -# if defined(_WIN32_WCE) -# define fdopen(fd,mode) NULL /* No fdopen() */ -# ifndef _PTRDIFF_T_DEFINED - typedef int ptrdiff_t; -# define _PTRDIFF_T_DEFINED -# endif -# else -# define fdopen(fd,type) _fdopen(fd,type) -# endif -#endif - -#if defined(__BORLANDC__) - #pragma warn -8004 - #pragma warn -8008 - #pragma warn -8066 -#endif - -/* provide prototypes for these when building zlib without LFS */ -#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 - ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); - ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); -#endif - - /* common defaults */ - -#ifndef OS_CODE -# define OS_CODE 0x03 /* assume Unix */ -#endif - -#ifndef F_OPEN -# define F_OPEN(name, mode) fopen((name), (mode)) -#endif - - /* functions */ - -#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) -# ifndef HAVE_VSNPRINTF -# define HAVE_VSNPRINTF -# endif -#endif -#if defined(__CYGWIN__) -# ifndef HAVE_VSNPRINTF -# define HAVE_VSNPRINTF -# endif -#endif -#ifndef HAVE_VSNPRINTF -# ifdef MSDOS - /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), - but for now we just assume it doesn't. */ -# define NO_vsnprintf -# endif -# ifdef __TURBOC__ -# define NO_vsnprintf -# endif -# ifdef WIN32 - /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ -# if !defined(vsnprintf) && !defined(NO_vsnprintf) -# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) -# define vsnprintf _vsnprintf -# endif -# endif -# endif -# ifdef __SASC -# define NO_vsnprintf -# endif -#endif -#ifdef VMS -# define NO_vsnprintf -#endif - -#if defined(pyr) -# define NO_MEMCPY -#endif -#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) - /* Use our own functions for small and medium model with MSC <= 5.0. - * You may have to use the same strategy for Borland C (untested). - * The __SC__ check is for Symantec. - */ -# define NO_MEMCPY -#endif -#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) -# define HAVE_MEMCPY -#endif -#ifdef HAVE_MEMCPY -# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ -# define zmemcpy _fmemcpy -# define zmemcmp _fmemcmp -# define zmemzero(dest, len) _fmemset(dest, 0, len) -# else -# define zmemcpy memcpy -# define zmemcmp memcmp -# define zmemzero(dest, len) memset(dest, 0, len) -# endif -#else - void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); - int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); - void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); -#endif - -/* Diagnostic functions */ -#ifdef DEBUG_ZLIB -# include <stdio.h> - extern int ZLIB_INTERNAL z_verbose; - extern void ZLIB_INTERNAL z_error OF((const char *m)); -# define Assert(cond,msg) {if(!(cond)) z_error(msg);} -# define Trace(x) {if (z_verbose>=0) fprintf x ;} -# define Tracev(x) {if (z_verbose>0) fprintf x ;} -# define Tracevv(x) {if (z_verbose>1) fprintf x ;} -# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} -# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} -#else -# define Assert(cond,msg) -# define Trace(x) -# define Tracev(x) -# define Tracevv(x) -# define Tracec(c,x) -# define Tracecv(c,x) -#endif - - -voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, - unsigned size)); -void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); - -#define ZALLOC(strm, items, size) \ - (*((strm)->zalloc))((strm)->opaque, (items), (size)) -#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) -#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} - -#endif /* ZUTIL_H */ |