1/*
2 * D-Cinema audio demuxer
3 * Copyright (c) 2005 Reimar D��ffinger
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "libavutil/channel_layout.h"
23#include "avformat.h"
24
25static int daud_header(AVFormatContext *s) {
26    AVStream *st = avformat_new_stream(s, NULL);
27    if (!st)
28        return AVERROR(ENOMEM);
29    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
30    st->codec->codec_id = AV_CODEC_ID_PCM_S24DAUD;
31    st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd');
32    st->codec->channels = 6;
33    st->codec->channel_layout = AV_CH_LAYOUT_5POINT1;
34    st->codec->sample_rate = 96000;
35    st->codec->bit_rate = 3 * 6 * 96000 * 8;
36    st->codec->block_align = 3 * 6;
37    st->codec->bits_per_coded_sample = 24;
38    return 0;
39}
40
41static int daud_packet(AVFormatContext *s, AVPacket *pkt) {
42    AVIOContext *pb = s->pb;
43    int ret, size;
44    if (url_feof(pb))
45        return AVERROR(EIO);
46    size = avio_rb16(pb);
47    avio_rb16(pb); // unknown
48    ret = av_get_packet(pb, pkt, size);
49    pkt->stream_index = 0;
50    return ret;
51}
52
53AVInputFormat ff_daud_demuxer = {
54    .name           = "daud",
55    .long_name      = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
56    .read_header    = daud_header,
57    .read_packet    = daud_packet,
58    .extensions     = "302,daud",
59};
60