/*

 * D-Cinema audio demuxer

 * Copyright (c) 2005 Reimar Döffinger

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg 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.

 *

 * FFmpeg 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 FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#include "libavutil/channel_layout.h"

#include "avformat.h"

#include "demux.h"

#include "internal.h"

static int daud_header(AVFormatContext *s) {

    AVStream *st = avformat_new_stream(s, NULL);

    if (!st)

        return AVERROR(ENOMEM);

    st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;

    st->codecpar->codec_id = AV_CODEC_ID_PCM_S24DAUD;

    st->codecpar->codec_tag = MKTAG('d', 'a', 'u', 'd');

    st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT1;

    st->codecpar->sample_rate = 96000;

    st->codecpar->bit_rate = 3 * 6 * 96000 * 8;

    st->codecpar->block_align = 3 * 6;

    st->codecpar->bits_per_coded_sample = 24;

    avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);

    return 0;

}

static int daud_packet(AVFormatContext *s, AVPacket *pkt) {

    AVIOContext *pb = s->pb;

    int ret, size;

    if (avio_feof(pb))

        return AVERROR_EOF;

    size = avio_rb16(pb);

    avio_rb16(pb); // unknown

    ret = av_get_packet(pb, pkt, size);

    pkt->stream_index = 0;

    return ret;

}

const FFInputFormat ff_daud_demuxer = {

    .p.name         = "daud",

    .p.long_name    = NULL_IF_CONFIG_SMALL("D-Cinema audio"),

    .p.extensions   = "302,daud",

    .read_header    = daud_header,

    .read_packet    = daud_packet,

};