blob: 160faafdb75bdeeefb329d06fa84c4389abc06a4
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
4 | * FFmpeg is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * FFmpeg is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with FFmpeg; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
18 | |
19 | /** |
20 | * @file |
21 | * Ulead DV audio parser |
22 | * |
23 | * Determines the duration for each packet. |
24 | */ |
25 | |
26 | #include "parser.h" |
27 | #include "dvaudio.h" |
28 | |
29 | static int dvaudio_parse(AVCodecParserContext *s1, AVCodecContext *avctx, |
30 | const uint8_t **poutbuf, int *poutbuf_size, |
31 | const uint8_t *buf, int buf_size) |
32 | { |
33 | if (buf_size >= 248) |
34 | s1->duration = dv_get_audio_sample_count(buf + 244, avctx->block_align == 8640); |
35 | |
36 | /* always return the full packet. this parser isn't doing any splitting or |
37 | combining, only packet analysis */ |
38 | *poutbuf = buf; |
39 | *poutbuf_size = buf_size; |
40 | return buf_size; |
41 | } |
42 | |
43 | AVCodecParser ff_dvaudio_parser = { |
44 | .codec_ids = { AV_CODEC_ID_DVAUDIO }, |
45 | .parser_parse = dvaudio_parse, |
46 | }; |
47 |