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
29static 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
43const AVCodecParser ff_dvaudio_parser = {
44    .codec_ids      = { AV_CODEC_ID_DVAUDIO },
45    .parser_parse   = dvaudio_parse,
46};
47