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60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
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/*
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* g722 raw demuxer
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* Copyright (c) 2010 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avassert.h"
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#include "avformat.h"
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#include "internal.h"
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#include "rawdec.h"
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static int g722_read_header(AVFormatContext *s)
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{
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AVStream *st;
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codecpar->codec_id = AV_CODEC_ID_ADPCM_G722;
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st->codecpar->sample_rate = 16000;
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st->codecpar->channels = 1;
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st->codecpar->bits_per_coded_sample =
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av_get_bits_per_sample(st->codecpar->codec_id);
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av_assert0(st->codecpar->bits_per_coded_sample > 0);
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avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
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return 0;
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}
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FF_RAW_DEMUXER_CLASS(g722)
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AVInputFormat ff_g722_demuxer = {
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.name = "g722",
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.long_name = NULL_IF_CONFIG_SMALL("raw G.722"),
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.read_header = g722_read_header,
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.read_packet = ff_raw_read_partial_packet,
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.flags = AVFMT_GENERIC_INDEX,
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.extensions = "g722,722",
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.raw_codec_id = AV_CODEC_ID_ADPCM_G722,
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.priv_data_size = sizeof(FFRawDemuxerContext),
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.priv_class = &g722_demuxer_class,};
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