60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
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/*
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* D-Cinema audio demuxer
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* Copyright (c) 2005 Reimar Döffinger
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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/channel_layout.h"
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#include "avformat.h"
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static int daud_header(AVFormatContext *s) {
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AVStream *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_PCM_S24DAUD;
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st->codecpar->codec_tag = MKTAG('d', 'a', 'u', 'd');
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st->codecpar->channels = 6;
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st->codecpar->channel_layout = AV_CH_LAYOUT_5POINT1;
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st->codecpar->sample_rate = 96000;
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st->codecpar->bit_rate = 3 * 6 * 96000 * 8;
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st->codecpar->block_align = 3 * 6;
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st->codecpar->bits_per_coded_sample = 24;
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return 0;
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}
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static int daud_packet(AVFormatContext *s, AVPacket *pkt) {
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AVIOContext *pb = s->pb;
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int ret, size;
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if (avio_feof(pb))
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return AVERROR(EIO);
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size = avio_rb16(pb);
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avio_rb16(pb); // unknown
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ret = av_get_packet(pb, pkt, size);
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pkt->stream_index = 0;
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return ret;
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}
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AVInputFormat ff_daud_demuxer = {
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.name = "daud",
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.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
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.read_header = daud_header,
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.read_packet = daud_packet,
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.extensions = "302,daud",
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};
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