1 /*
2 * DPX parser
3 * Copyright (c) 2013 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 * DPX parser
25 */
26
29
37
39 const uint8_t **poutbuf,
int *poutbuf_size,
41 {
45 int i = 0;
46
48
49 *poutbuf_size = 0;
50 if (buf_size == 0)
51 return 0;
52
54 for (; i < buf_size; i++) {
55 state = (state << 8) | buf[i];
56 if (state ==
MKBETAG(
'S',
'D',
'P',
'X') ||
57 state ==
MKTAG(
'S',
'D',
'P',
'X')) {
60 break;
61 }
62 }
64 } else {
70 next = i;
71 }
72 }
73
78 if (d->
fsize <= 1664) {
81 }
83 if (d->
fsize > buf_size - i + 19)
85 else
86 next = d->
fsize + i - 19;
87 break;
88 }
90 }
91
94 return buf_size;
95
97
99 *poutbuf_size = buf_size;
100 return next;
101 }
102
108 };