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Diffstat (limited to 'vp10/common/textblit.c')
-rw-r--r-- | vp10/common/textblit.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/vp10/common/textblit.c b/vp10/common/textblit.c deleted file mode 100644 index 2e8811ea5..000000000 --- a/vp10/common/textblit.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * Copyright (c) 2010 The WebM project authors. All Rights Reserved. - * - * Use of this source code is governed by a BSD-style license - * that can be found in the LICENSE file in the root of the source - * tree. An additional intellectual property rights grant can be found - * in the file PATENTS. All contributing project authors may - * be found in the AUTHORS file in the root of the source tree. - */ - -#include <stdlib.h> - -#include "vp10/common/textblit.h" - -static const int font[] = { - 0x0, 0x5C00, 0x8020, 0xAFABEA, 0xD7EC0, 0x1111111, 0x1855740, 0x18000, - 0x45C0, 0x74400, 0x51140, 0x23880, 0xC4000, 0x21080, 0x80000, 0x111110, - 0xE9D72E, 0x87E40, 0x12AD732, 0xAAD62A, 0x4F94C4, 0x4D6B7, 0x456AA, - 0x3E8423, 0xAAD6AA, 0xAAD6A2, 0x2800, 0x2A00, 0x8A880, 0x52940, 0x22A20, - 0x15422, 0x6AD62E, 0x1E4A53E, 0xAAD6BF, 0x8C62E, 0xE8C63F, 0x118D6BF, - 0x1094BF, 0xCAC62E, 0x1F2109F, 0x118FE31, 0xF8C628, 0x8A89F, 0x108421F, - 0x1F1105F, 0x1F4105F, 0xE8C62E, 0x2294BF, 0x164C62E, 0x12694BF, 0x8AD6A2, - 0x10FC21, 0x1F8421F, 0x744107, 0xF8220F, 0x1151151, 0x117041, 0x119D731, - 0x47E0, 0x1041041, 0xFC400, 0x10440, 0x1084210, 0x820 -}; - -static void plot(int x, int y, unsigned char *image, int pitch) { - image[x + y * pitch] ^= 255; -} - -void vp10_blit_text(const char *msg, unsigned char *address, const int pitch) { - int letter_bitmap; - unsigned char *output_pos = address; - int colpos = 0; - - while (msg[colpos] != 0) { - char letter = msg[colpos]; - int fontcol, fontrow; - - if (letter <= 'Z' && letter >= ' ') - letter_bitmap = font[letter - ' ']; - else if (letter <= 'z' && letter >= 'a') - letter_bitmap = font[letter - 'a' + 'A' - ' ']; - else - letter_bitmap = font[0]; - - for (fontcol = 6; fontcol >= 0; fontcol--) - for (fontrow = 0; fontrow < 5; fontrow++) - output_pos[fontrow * pitch + fontcol] = - ((letter_bitmap >> (fontcol * 5)) & (1 << fontrow) ? 255 : 0); - - output_pos += 7; - colpos++; - } -} - - - -/* Bresenham line algorithm */ -void vp10_blit_line(int x0, int x1, int y0, int y1, unsigned char *image, - int pitch) { - int steep = abs(y1 - y0) > abs(x1 - x0); - int deltax, deltay; - int error, ystep, y, x; - - if (steep) { - int t; - t = x0; - x0 = y0; - y0 = t; - - t = x1; - x1 = y1; - y1 = t; - } - - if (x0 > x1) { - int t; - t = x0; - x0 = x1; - x1 = t; - - t = y0; - y0 = y1; - y1 = t; - } - - deltax = x1 - x0; - deltay = abs(y1 - y0); - error = deltax / 2; - - y = y0; - - if (y0 < y1) - ystep = 1; - else - ystep = -1; - - if (steep) { - for (x = x0; x <= x1; x++) { - plot(y, x, image, pitch); - - error = error - deltay; - if (error < 0) { - y = y + ystep; - error = error + deltax; - } - } - } else { - for (x = x0; x <= x1; x++) { - plot(x, y, image, pitch); - - error = error - deltay; - if (error < 0) { - y = y + ystep; - error = error + deltax; - } - } - } -} |