b93f738f |
/* |
7fbde343 |
* D-Cinema audio demuxer |
941125ef |
* Copyright (c) 2005 Reimar Döffinger |
b93f738f |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
b93f738f |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
b93f738f |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
b93f738f |
* 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 |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
b93f738f |
*/
#include "avformat.h"
static int daud_header(AVFormatContext *s, AVFormatParameters *ap) { |
3b3bbdd3 |
AVStream *st = avformat_new_stream(s, NULL); |
e8bd16a5 |
if (!st)
return AVERROR(ENOMEM); |
72415b2a |
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
b93f738f |
st->codec->codec_id = CODEC_ID_PCM_S24DAUD;
st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd');
st->codec->channels = 6;
st->codec->sample_rate = 96000;
st->codec->bit_rate = 3 * 6 * 96000 * 8;
st->codec->block_align = 3 * 6; |
dd1c8f3e |
st->codec->bits_per_coded_sample = 24; |
b93f738f |
return 0;
}
static int daud_packet(AVFormatContext *s, AVPacket *pkt) { |
471fe57e |
AVIOContext *pb = s->pb; |
b93f738f |
int ret, size;
if (url_feof(pb)) |
6f3e0b21 |
return AVERROR(EIO); |
e63a3628 |
size = avio_rb16(pb);
avio_rb16(pb); // unknown |
b93f738f |
ret = av_get_packet(pb, pkt, size);
pkt->stream_index = 0;
return ret;
}
|
51c3861e |
static int daud_write_header(struct AVFormatContext *s)
{
AVCodecContext *codec = s->streams[0]->codec;
if (codec->channels!=6 || codec->sample_rate!=96000)
return -1;
return 0;
}
static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{ |
347b375a |
if (pkt->size > 65535) {
av_log(s, AV_LOG_ERROR,
"Packet size too large for s302m. (%d > 65535)\n", pkt->size);
return -1;
} |
e9eb8d0b |
avio_wb16(s->pb, pkt->size);
avio_wb16(s->pb, 0x8010); // unknown
avio_write(s->pb, pkt->data, pkt->size); |
b7f2fdde |
avio_flush(s->pb); |
51c3861e |
return 0;
}
#if CONFIG_DAUD_DEMUXER |
66355be3 |
AVInputFormat ff_daud_demuxer = { |
dfc2c4d9 |
.name = "daud",
.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio format"),
.read_header = daud_header,
.read_packet = daud_packet, |
b93f738f |
.extensions = "302",
}; |
51c3861e |
#endif
|
b250f9c6 |
#if CONFIG_DAUD_MUXER |
30b4ee79 |
AVOutputFormat ff_daud_muxer = {
.name = "daud",
.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio format"),
.extensions = "302",
.audio_codec = CODEC_ID_PCM_S24DAUD,
.video_codec = CODEC_ID_NONE,
.write_header = daud_write_header,
.write_packet = daud_write_packet,
.flags = AVFMT_NOTIMESTAMPS, |
51c3861e |
};
#endif |