mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
68559225a2
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: James Almer <jamrial@gmail.com>
105 lines
3.6 KiB
C
105 lines
3.6 KiB
C
/*
|
|
* Sony OpenMG (OMA) muxer
|
|
*
|
|
* Copyright (c) 2011 Michael Karcher
|
|
*
|
|
* 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 "avio_internal.h"
|
|
#include "id3v2.h"
|
|
#include "internal.h"
|
|
#include "oma.h"
|
|
#include "rawenc.h"
|
|
|
|
static av_cold int oma_write_header(AVFormatContext *s)
|
|
{
|
|
AVCodecParameters *par;
|
|
int srate_index;
|
|
int isjointstereo;
|
|
|
|
par = s->streams[0]->codecpar;
|
|
/* check for support of the format first */
|
|
|
|
for (srate_index = 0; ; srate_index++) {
|
|
if (ff_oma_srate_tab[srate_index] == 0) {
|
|
av_log(s, AV_LOG_ERROR, "Sample rate %d not supported in OpenMG audio\n",
|
|
par->sample_rate);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (ff_oma_srate_tab[srate_index] * 100 == par->sample_rate)
|
|
break;
|
|
}
|
|
|
|
/* Metadata; OpenMG does not support ID3v2.4 */
|
|
ff_id3v2_write_simple(s, 3, ID3v2_EA3_MAGIC);
|
|
|
|
ffio_wfourcc(s->pb, "EA3\0");
|
|
avio_w8(s->pb, EA3_HEADER_SIZE >> 7);
|
|
avio_w8(s->pb, EA3_HEADER_SIZE & 0x7F);
|
|
avio_wl16(s->pb, 0xFFFF); /* not encrypted */
|
|
ffio_fill(s->pb, 0, 6 * 4); /* Padding + DRM id */
|
|
|
|
switch (par->codec_tag) {
|
|
case OMA_CODECID_ATRAC3:
|
|
if (par->ch_layout.nb_channels != 2) {
|
|
av_log(s, AV_LOG_ERROR, "ATRAC3 in OMA is only supported with 2 channels\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (par->extradata_size == 14) /* WAV format extradata */
|
|
isjointstereo = par->extradata[6] != 0;
|
|
else if(par->extradata_size == 10) /* RM format extradata */
|
|
isjointstereo = par->extradata[8] == 0x12;
|
|
else {
|
|
av_log(s, AV_LOG_ERROR, "ATRAC3: Unsupported extradata size\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
avio_wb32(s->pb, (OMA_CODECID_ATRAC3 << 24) |
|
|
(isjointstereo << 17) |
|
|
(srate_index << 13) |
|
|
(par->block_align/8));
|
|
break;
|
|
case OMA_CODECID_ATRAC3P:
|
|
avio_wb32(s->pb, (OMA_CODECID_ATRAC3P << 24) |
|
|
(srate_index << 13) |
|
|
(par->ch_layout.nb_channels << 10) |
|
|
(par->block_align/8 - 1));
|
|
break;
|
|
default:
|
|
av_log(s, AV_LOG_ERROR, "unsupported codec tag %s for write\n",
|
|
av_fourcc2str(par->codec_tag));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ffio_fill(s->pb, 0, EA3_HEADER_SIZE - 36); /* Padding */
|
|
|
|
return 0;
|
|
}
|
|
|
|
const AVOutputFormat ff_oma_muxer = {
|
|
.name = "oma",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sony OpenMG audio"),
|
|
.mime_type = "audio/x-oma",
|
|
.extensions = "oma",
|
|
.audio_codec = AV_CODEC_ID_ATRAC3,
|
|
.write_header = oma_write_header,
|
|
.write_packet = ff_raw_write_packet,
|
|
.codec_tag = ff_oma_codec_tags_list,
|
|
.flags = AVFMT_NOTIMESTAMPS,
|
|
};
|