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/*
* D-Cinema audio muxer
* 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 "avformat.h"
#include "mux.h"
static int daud_init(struct AVFormatContext *s)
{
AVCodecParameters *par = s->streams[0]->codecpar;
int ret;
if (par->ch_layout.nb_channels != 6) {
av_log(s, AV_LOG_ERROR,
"Invalid number of channels %d, must be exactly 6\n",
par->ch_layout.nb_channels);
return AVERROR(EINVAL);
}
if (par->sample_rate != 96000) {
av_log(s, AV_LOG_ERROR,
"Invalid sample rate %d, must be 96000\n",
par->sample_rate);
return AVERROR(EINVAL);
}
ret = ff_stream_add_bitstream_filter(s->streams[0], "pcm_rechunk", "n=2000:pad=0");
if (ret < 0)
return ret;
return 0;
}
static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
avio_wb16(s->pb, pkt->size);
avio_wb16(s->pb, 0x8010); // unknown
avio_write(s->pb, pkt->data, pkt->size);
return 0;
}
const FFOutputFormat ff_daud_muxer = {
.p.name = "daud",
.p.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
.p.extensions = "302",
.p.audio_codec = AV_CODEC_ID_PCM_S24DAUD,
.p.video_codec = AV_CODEC_ID_NONE,
.p.subtitle_codec = AV_CODEC_ID_NONE,
.p.flags = AVFMT_NOTIMESTAMPS,
.flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH |
FF_OFMT_FLAG_ONLY_DEFAULT_CODECS,
.init = daud_init,
.write_packet = daud_write_packet,
};
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