diff options
Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/lua/src/vesa.c')
-rw-r--r-- | contrib/syslinux/syslinux-4.03/com32/lua/src/vesa.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/contrib/syslinux/syslinux-4.03/com32/lua/src/vesa.c b/contrib/syslinux/syslinux-4.03/com32/lua/src/vesa.c deleted file mode 100644 index 6f34820..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/lua/src/vesa.c +++ /dev/null @@ -1,148 +0,0 @@ -#include <stdlib.h> -#include <string.h> - -#include "lua.h" -#include "lauxlib.h" -#include "lualib.h" -#include "../../include/console.h" -#include "../../lib/sys/vesa/vesa.h" -#include "../../lib/sys/vesa/video.h" - -int vesacon_load_background(const char *filename); - -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 vesa_getmodes(lua_State *L) -{ - com32sys_t rm; - uint16_t mode, bestmode, *mode_ptr; - struct vesa_general_info *gi; - struct vesa_mode_info *mi; - enum vesa_pixel_format bestpxf; - int nmode = 1; - - /* Allocate space in the bounce buffer for these structures */ - gi = &((struct vesa_info *)__com32.cs_bounce)->gi; - mi = &((struct vesa_info *)__com32.cs_bounce)->mi; - - memset(&rm, 0, sizeof rm); - memset(gi, 0, sizeof *gi); - - 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 ) - return -1; /* Function call failed */ - if ( gi->signature != VESA_MAGIC ) - return -2; /* No magic */ - if ( gi->version < 0x0102 ) - return -3; /* VESA 1.2+ required */ - - lua_newtable(L); /* list of modes */ - - /* Copy general info */ - memcpy(&__vesa_info.gi, gi, sizeof *gi); - - /* Search for a 640x480 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 */ - - printf("Found mode: 0x%04x (%dx%dx%d)\n", mode, mi->h_res, mi->v_res, mi->bpp); - - 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; - - lua_pushnumber(L, nmode++); - lua_newtable(L); /* mode info */ - - lua_pushstring(L, "mode"); - lua_pushnumber(L, mode); - lua_settable(L,-3); - - lua_pushstring(L, "hres"); - lua_pushnumber(L, mi->h_res); - lua_settable(L,-3); - - lua_pushstring(L, "vres"); - lua_pushnumber(L, mi->v_res); - lua_settable(L,-3); - - lua_pushstring(L, "bpp"); - lua_pushnumber(L, mi->bpp); - lua_settable(L,-3); - - lua_settable(L, -3); /* add to mode list */ - - } - - return 1; -} - - -static int vesa_setmode(lua_State *L) -{ - openconsole(&dev_rawcon_r, &dev_vesaserial_w); - - return 0; -} - - -static int vesa_load_background(lua_State *L) -{ - const char *filename = luaL_checkstring(L, 1); - - vesacon_load_background(filename); - - return 0; -} - -static const luaL_reg vesalib[] = { - {"getmodes", vesa_getmodes}, - {"setmode", vesa_setmode}, - {"load_background", vesa_load_background}, - {NULL, NULL} -}; - -/* This defines a function that opens up your library. */ - -LUALIB_API int luaopen_vesa (lua_State *L) { - luaL_openlib(L, LUA_VESALIBNAME, vesalib, 0); - return 1; -} - |