1 /*
2 * BMP parser
3 * Copyright (c) 2012 Paul B Mahol
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 * BMP parser
25 */
26
29
31
37
39 const uint8_t **poutbuf,
int *poutbuf_size,
41 {
45 int i = 0;
46
47 *poutbuf_size = 0;
48
49 restart:
51 for (; i < buf_size; i++) {
52 state = (state << 8) | buf[i];
54 if ((state >> 48) == (('B' << 8) | 'M')) {
57 }
59 // unsigned hsize = av_bswap32(state>>32);
61 if (ihsize < 12 || ihsize > 200) {
63 continue;
64 }
67
69 next = i - 17;
70 } else
71 goto restart;
74 }
76 } else {
82
84 goto restart;
85 }
86 }
87
90 return buf_size;
91
93
95 *poutbuf_size = buf_size;
96 return next;
97 }
98
104 };