/*

  * 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"
 

 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->channels = 6;
     st->codecpar->channel_layout = AV_CH_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;

     return 0;
 }
 
 static int daud_packet(AVFormatContext *s, AVPacket *pkt) {

     AVIOContext *pb = s->pb;

     int ret, size;

     if (avio_feof(pb))

         return AVERROR(EIO);

     size = avio_rb16(pb);
     avio_rb16(pb); // unknown

     ret = av_get_packet(pb, pkt, size);
     pkt->stream_index = 0;
     return ret;
 }
 

 AVInputFormat ff_daud_demuxer = {

     .name           = "daud",

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

     .read_header    = daud_header,
     .read_packet    = daud_packet,

     .extensions     = "302,daud",

 };