blob: 2feec01211e39930510639f29f272c51c3efc54c
1 | /* |
2 | * g722 raw demuxer |
3 | * Copyright (c) 2010 Martin Storsjo |
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 | #include "libavutil/avassert.h" |
23 | #include "avformat.h" |
24 | #include "internal.h" |
25 | #include "rawdec.h" |
26 | |
27 | static int g722_read_header(AVFormatContext *s) |
28 | { |
29 | AVStream *st; |
30 | |
31 | st = avformat_new_stream(s, NULL); |
32 | if (!st) |
33 | return AVERROR(ENOMEM); |
34 | |
35 | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
36 | st->codecpar->codec_id = AV_CODEC_ID_ADPCM_G722; |
37 | st->codecpar->sample_rate = 16000; |
38 | st->codecpar->channels = 1; |
39 | |
40 | st->codecpar->bits_per_coded_sample = |
41 | av_get_bits_per_sample(st->codecpar->codec_id); |
42 | |
43 | av_assert0(st->codecpar->bits_per_coded_sample > 0); |
44 | |
45 | avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |
46 | return 0; |
47 | } |
48 | |
49 | AVInputFormat ff_g722_demuxer = { |
50 | .name = "g722", |
51 | .long_name = NULL_IF_CONFIG_SMALL("raw G.722"), |
52 | .read_header = g722_read_header, |
53 | .read_packet = ff_raw_read_partial_packet, |
54 | .flags = AVFMT_GENERIC_INDEX, |
55 | .extensions = "g722,722", |
56 | .raw_codec_id = AV_CODEC_ID_ADPCM_G722, |
57 | }; |
58 |