62 lines
2 KiB
C
Executable file
62 lines
2 KiB
C
Executable file
/*
|
|
* IRCAM muxer
|
|
* Copyright (c) 2012 Paul B Mahol
|
|
*
|
|
* 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 "libavutil/intreadwrite.h"
|
|
#include "avformat.h"
|
|
#include "avio_internal.h"
|
|
#include "internal.h"
|
|
#include "rawenc.h"
|
|
#include "ircam.h"
|
|
|
|
static int ircam_write_header(AVFormatContext *s)
|
|
{
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
uint32_t tag;
|
|
|
|
if (s->nb_streams != 1) {
|
|
av_log(s, AV_LOG_ERROR, "only one stream is supported\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
tag = ff_codec_get_tag(ff_codec_ircam_le_tags, par->codec_id);
|
|
if (!tag) {
|
|
av_log(s, AV_LOG_ERROR, "unsupported codec\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
avio_wl32(s->pb, 0x0001A364);
|
|
avio_wl32(s->pb, av_q2intfloat((AVRational){par->sample_rate, 1}));
|
|
avio_wl32(s->pb, par->channels);
|
|
avio_wl32(s->pb, tag);
|
|
ffio_fill(s->pb, 0, 1008);
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat ff_ircam_muxer = {
|
|
.name = "ircam",
|
|
.extensions = "sf,ircam",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"),
|
|
.audio_codec = AV_CODEC_ID_PCM_S16LE,
|
|
.video_codec = AV_CODEC_ID_NONE,
|
|
.write_header = ircam_write_header,
|
|
.write_packet = ff_raw_write_packet,
|
|
.codec_tag = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 },
|
|
};
|