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ffmpeg / libavformat / daud.c @ f739b36d

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1 b93f738f Reimar Döffinger
/*
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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 "avformat.h"
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static int daud_header(AVFormatContext *s, AVFormatParameters *ap) {
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    AVStream *st = av_new_stream(s, 0);
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    st->codec->codec_type = CODEC_TYPE_AUDIO;
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    st->codec->codec_id = CODEC_ID_PCM_S24DAUD;
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    st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd');
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    st->codec->channels = 6;
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    st->codec->sample_rate = 96000;
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    st->codec->bit_rate = 3 * 6 * 96000 * 8;
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    st->codec->block_align = 3 * 6;
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    st->codec->bits_per_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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    ByteIOContext *pb = s->pb;
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    int ret, size;
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    if (url_feof(pb))
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        return AVERROR(EIO);
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    size = get_be16(pb);
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    get_be16(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 daud_demuxer = {
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    "daud",
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    "D-Cinema audio format",
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    0,
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    NULL,
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    daud_header,
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    daud_packet,
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    NULL,
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    NULL,
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    .extensions = "302",
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};