1 /*
2 * 8088flex TMV video decoder
3 * Copyright (c) 2009 Daniel Verkamp <daniel at drv.nu>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * 8088flex TMV video decoder
25 * @author Daniel Verkamp
26 * @see http://www.oldskool.org/pc/8088_Corruption
27 */
28
29 #include <string.h>
30
35
37
40 {
44 unsigned char_cols = avctx->
width >> 3;
45 unsigned char_rows = avctx->
height >> 3;
46 unsigned x,
y, fg, bg,
c;
48
51
52 if (avpkt->
size < 2*char_rows*char_cols) {
54 "Input buffer too small, truncated sample?\n");
55 *got_frame = 0;
57 }
58
62
66
67 for (y = 0; y < char_rows; y++) {
68 for (x = 0; x < char_cols; x++) {
69 c = *src++;
70 bg = *src >> 4;
71 fg = *src++ & 0xF;
74 }
76 }
77
78 *got_frame = 1;
79
81 }
82
84 {
86 return 0;
87 }
88
97 };