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#include "avformat.h"
22
23static int daud_header(AVFormatContext *s, AVFormatParameters *ap) {
24    AVStream *st = av_new_stream(s, 0);
25    if (!st)
26        return AVERROR(ENOMEM);
27    st->codec->codec_type = CODEC_TYPE_AUDIO;
28    st->codec->codec_id = CODEC_ID_PCM_S24DAUD;
29    st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd');
30    st->codec->channels = 6;
31    st->codec->sample_rate = 96000;
32    st->codec->bit_rate = 3 * 6 * 96000 * 8;
33    st->codec->block_align = 3 * 6;
34    st->codec->bits_per_coded_sample = 24;
35    return 0;
36}
37
38static int daud_packet(AVFormatContext *s, AVPacket *pkt) {
39    ByteIOContext *pb = s->pb;
40    int ret, size;
41    if (url_feof(pb))
42        return AVERROR(EIO);
43    size = get_be16(pb);
44    get_be16(pb); // unknown
45    ret = av_get_packet(pb, pkt, size);
46    pkt->stream_index = 0;
47    return ret;
48}
49
50static int daud_write_header(struct AVFormatContext *s)
51{
52    AVCodecContext *codec = s->streams[0]->codec;
53    if (codec->channels!=6 || codec->sample_rate!=96000)
54        return -1;
55    return 0;
56}
57
58static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
59{
60    put_be16(s->pb, pkt->size);
61    put_be16(s->pb, 0x8010); // unknown
62    put_buffer(s->pb, pkt->data, pkt->size);
63    put_flush_packet(s->pb);
64    return 0;
65}
66
67#if CONFIG_DAUD_DEMUXER
68AVInputFormat daud_demuxer = {
69    "daud",
70    NULL_IF_CONFIG_SMALL("D-Cinema audio format"),
71    0,
72    NULL,
73    daud_header,
74    daud_packet,
75    NULL,
76    NULL,
77    .extensions = "302",
78};
79#endif
80
81#if CONFIG_DAUD_MUXER
82AVOutputFormat daud_muxer =
83{
84    "daud",
85    NULL_IF_CONFIG_SMALL("D-Cinema audio format"),
86    NULL,
87    "302",
88    0,
89    CODEC_ID_PCM_S24DAUD,
90    CODEC_ID_NONE,
91    daud_write_header,
92    daud_write_packet,
93    .flags= AVFMT_NOTIMESTAMPS,
94};
95#endif
96