mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.9 KiB
59 lines
1.9 KiB
/* |
|
* g722 raw demuxer |
|
* Copyright (c) 2010 Martin Storsjo |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "libavutil/avassert.h" |
|
#include "avformat.h" |
|
#include "internal.h" |
|
#include "rawdec.h" |
|
|
|
static int g722_read_header(AVFormatContext *s) |
|
{ |
|
AVStream *st; |
|
|
|
st = avformat_new_stream(s, NULL); |
|
if (!st) |
|
return AVERROR(ENOMEM); |
|
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
|
st->codecpar->codec_id = AV_CODEC_ID_ADPCM_G722; |
|
st->codecpar->sample_rate = 16000; |
|
st->codecpar->channels = 1; |
|
|
|
st->codecpar->bits_per_coded_sample = |
|
av_get_bits_per_sample(st->codecpar->codec_id); |
|
|
|
av_assert0(st->codecpar->bits_per_coded_sample > 0); |
|
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |
|
return 0; |
|
} |
|
|
|
const AVInputFormat ff_g722_demuxer = { |
|
.name = "g722", |
|
.long_name = NULL_IF_CONFIG_SMALL("raw G.722"), |
|
.read_header = g722_read_header, |
|
.read_packet = ff_raw_read_partial_packet, |
|
.flags = AVFMT_GENERIC_INDEX, |
|
.extensions = "g722,722", |
|
.raw_codec_id = AV_CODEC_ID_ADPCM_G722, |
|
.priv_data_size = sizeof(FFRawDemuxerContext), |
|
.priv_class = &ff_raw_demuxer_class, |
|
};
|
|
|