diff options
Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/drawtxt.c')
-rw-r--r-- | contrib/syslinux/syslinux-4.03/com32/lib/sys/vesa/drawtxt.c | 317 |
1 files changed, 0 insertions, 317 deletions
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); -} |