mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 19:30:05 +00:00
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
|
/*
|
||
|
|
* g722 raw demuxer
|
||
|
|
* Copyright (c) 2010 Martin Storsjo
|
||
|
|
*
|
||
|
|
* This file is part of Libav.
|
||
|
|
*
|
||
|
|
* Libav 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.
|
||
|
|
*
|
||
|
|
* Libav 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 Libav; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
||
|
|
st->codec->codec_id = AV_CODEC_ID_ADPCM_G722;
|
||
|
|
st->codec->sample_rate = 16000;
|
||
|
|
st->codec->channels = 1;
|
||
|
|
|
||
|
|
st->codec->bits_per_coded_sample =
|
||
|
|
av_get_bits_per_sample(st->codec->codec_id);
|
||
|
|
|
||
|
|
assert(st->codec->bits_per_coded_sample > 0);
|
||
|
|
|
||
|
|
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
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,
|
||
|
|
};
|