1/*
2 * D-Cinema audio muxer
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 "avformat.h"
23
24static int daud_write_header(struct AVFormatContext *s)
25{
26    AVCodecContext *codec = s->streams[0]->codec;
27    if (codec->channels!=6 || codec->sample_rate!=96000)
28        return -1;
29    return 0;
30}
31
32static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
33{
34    if (pkt->size > 65535) {
35        av_log(s, AV_LOG_ERROR,
36               "Packet size too large for s302m. (%d > 65535)\n", pkt->size);
37        return -1;
38    }
39    avio_wb16(s->pb, pkt->size);
40    avio_wb16(s->pb, 0x8010); // unknown
41    avio_write(s->pb, pkt->data, pkt->size);
42    return 0;
43}
44
45AVOutputFormat ff_daud_muxer = {
46    .name         = "daud",
47    .long_name    = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
48    .extensions   = "302",
49    .audio_codec  = AV_CODEC_ID_PCM_S24DAUD,
50    .video_codec  = AV_CODEC_ID_NONE,
51    .write_header = daud_write_header,
52    .write_packet = daud_write_packet,
53    .flags        = AVFMT_NOTIMESTAMPS,
54};
55