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/*
* raw FLAC muxer
* Copyright (c) 2006-2009 Justin Ruggles
*
* 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"
static int flac_write_header(struct AVFormatContext *s)
{
static const uint8_t header[8] = {
0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
};
uint8_t *streaminfo = s->streams[0]->codec->extradata;
int len = s->streams[0]->codec->extradata_size;
if(streaminfo != NULL && len > 0) {
put_buffer(s->pb, header, 8);
put_buffer(s->pb, streaminfo, len);
}
return 0;
}
static int flac_write_trailer(struct AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
uint8_t *streaminfo = s->streams[0]->codec->extradata;
int len = s->streams[0]->codec->extradata_size;
int64_t file_size;
if (streaminfo && len > 0 && !url_is_streamed(s->pb)) {
file_size = url_ftell(pb);
url_fseek(pb, 8, SEEK_SET);
put_buffer(pb, streaminfo, len);
url_fseek(pb, file_size, SEEK_SET);
put_flush_packet(pb);
}
return 0;
}
static int flac_write_packet(struct AVFormatContext *s, AVPacket *pkt)
{
put_buffer(s->pb, pkt->data, pkt->size);
put_flush_packet(s->pb);
return 0;
}
AVOutputFormat flac_muxer = {
"flac",
NULL_IF_CONFIG_SMALL("raw FLAC"),
"audio/x-flac",
"flac",
0,
CODEC_ID_FLAC,
CODEC_ID_NONE,
flac_write_header,
flac_write_packet,
flac_write_trailer,
.flags= AVFMT_NOTIMESTAMPS,
};
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