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
35
37 const uint8_t **poutbuf,
int *poutbuf_size,
39 {
43 int i = 0;
44
46
47 *poutbuf_size = 0;
48 if (buf_size == 0)
49 return 0;
50
52 for (; i < buf_size; i++) {
53 state = (state << 8) | buf[i];
54 if ((state >> 48) == (('B' << 8) | 'M')) {
57 if (bpc->
fsize > buf_size - i + 7)
59 else
60 next = bpc->
fsize + i - 7;
61 break;
62 }
63 }
65 } else {
71 next = i;
72 }
73 }
74
77 return buf_size;
78
80
82 *poutbuf_size = buf_size;
83 return next;
84 }
85
91 };