3e04114f3d
Applied the following regex : search for: (for.*\(.*;.*;) ([a-zA-Z_]*)\+\+\) replace with: \1 ++\2) This misses some for loops: ie : for (mb_col = 0; mb_col < oci->mb_cols; mb_col++, mi++) Change-Id: Icf5f6fb93cced0992e0bb71d2241780f7fb1f0a8
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdlib.h>
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void vp8_blit_text(const char *msg, unsigned char *address, const int pitch) {
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int letter_bitmap;
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unsigned char *output_pos = address;
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int colpos;
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const int font[] = {
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0x0, 0x5C00, 0x8020, 0xAFABEA, 0xD7EC0, 0x1111111, 0x1855740,
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0x18000, 0x45C0, 0x74400, 0x51140, 0x23880, 0xC4000, 0x21080,
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0x80000, 0x111110, 0xE9D72E, 0x87E40, 0x12AD732, 0xAAD62A, 0x4F94C4,
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0x4D6B7, 0x456AA, 0x3E8423, 0xAAD6AA, 0xAAD6A2, 0x2800, 0x2A00,
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0x8A880, 0x52940, 0x22A20, 0x15422, 0x6AD62E, 0x1E4A53E, 0xAAD6BF,
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0x8C62E, 0xE8C63F, 0x118D6BF, 0x1094BF, 0xCAC62E, 0x1F2109F, 0x118FE31,
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0xF8C628, 0x8A89F, 0x108421F, 0x1F1105F, 0x1F4105F, 0xE8C62E, 0x2294BF,
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0x164C62E, 0x12694BF, 0x8AD6A2, 0x10FC21, 0x1F8421F, 0x744107, 0xF8220F,
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0x1151151, 0x117041, 0x119D731, 0x47E0, 0x1041041, 0xFC400, 0x10440,
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0x1084210, 0x820
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};
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colpos = 0;
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while (msg[colpos] != 0) {
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char letter = msg[colpos];
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int fontcol, fontrow;
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if (letter <= 'Z' && letter >= ' ')
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letter_bitmap = font[letter - ' '];
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else if (letter <= 'z' && letter >= 'a')
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letter_bitmap = font[letter - 'a' + 'A' - ' '];
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else
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letter_bitmap = font[0];
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for (fontcol = 6; fontcol >= 0; fontcol--)
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for (fontrow = 0; fontrow < 5; ++fontrow)
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output_pos[fontrow * pitch + fontcol] =
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((letter_bitmap >> (fontcol * 5)) & (1 << fontrow) ? 255 : 0);
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output_pos += 7;
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colpos++;
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}
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}
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static void plot(const int x, const int y, unsigned char *image,
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const int pitch) {
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image[x + y * pitch] ^= 255;
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}
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/* Bresenham line algorithm */
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void vp8_blit_line(int x0, int x1, int y0, int y1, unsigned char *image,
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const int pitch) {
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int steep = abs(y1 - y0) > abs(x1 - x0);
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int deltax, deltay;
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int error, ystep, y, x;
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if (steep) {
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int t;
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t = x0;
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x0 = y0;
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y0 = t;
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t = x1;
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x1 = y1;
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y1 = t;
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}
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if (x0 > x1) {
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int t;
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t = x0;
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x0 = x1;
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x1 = t;
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t = y0;
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y0 = y1;
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y1 = t;
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}
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deltax = x1 - x0;
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deltay = abs(y1 - y0);
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error = deltax / 2;
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y = y0;
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if (y0 < y1)
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ystep = 1;
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else
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ystep = -1;
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if (steep) {
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for (x = x0; x <= x1; ++x) {
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plot(y, x, image, pitch);
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error = error - deltay;
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if (error < 0) {
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y = y + ystep;
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error = error + deltax;
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}
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}
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} else {
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for (x = x0; x <= x1; ++x) {
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plot(x, y, image, pitch);
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error = error - deltay;
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if (error < 0) {
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y = y + ystep;
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error = error + deltax;
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}
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}
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}
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}
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