yading@11: /*
yading@11:  * g722 raw demuxer
yading@11:  * Copyright (c) 2010 Martin Storsjo
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include "libavutil/avassert.h"
yading@11: #include "avformat.h"
yading@11: #include "internal.h"
yading@11: #include "rawdec.h"
yading@11: 
yading@11: static int g722_read_header(AVFormatContext *s)
yading@11: {
yading@11:     AVStream *st;
yading@11: 
yading@11:     st = avformat_new_stream(s, NULL);
yading@11:     if (!st)
yading@11:         return AVERROR(ENOMEM);
yading@11: 
yading@11:     st->codec->codec_type  = AVMEDIA_TYPE_AUDIO;
yading@11:     st->codec->codec_id    = AV_CODEC_ID_ADPCM_G722;
yading@11:     st->codec->sample_rate = 16000;
yading@11:     st->codec->channels    = 1;
yading@11: 
yading@11:     st->codec->bits_per_coded_sample =
yading@11:         av_get_bits_per_sample(st->codec->codec_id);
yading@11: 
yading@11:     av_assert0(st->codec->bits_per_coded_sample > 0);
yading@11: 
yading@11:     avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: AVInputFormat ff_g722_demuxer = {
yading@11:     .name           = "g722",
yading@11:     .long_name      = NULL_IF_CONFIG_SMALL("raw G.722"),
yading@11:     .read_header    = g722_read_header,
yading@11:     .read_packet    = ff_raw_read_partial_packet,
yading@11:     .flags          = AVFMT_GENERIC_INDEX,
yading@11:     .extensions     = "g722,722",
yading@11:     .raw_codec_id   = AV_CODEC_ID_ADPCM_G722,
yading@11: };