2005-12-17 19:14:38 +01:00
|
|
|
/*
|
2006-10-23 10:57:54 +02:00
|
|
|
* AU muxer and demuxer
|
2009-01-19 16:46:40 +01:00
|
|
|
* Copyright (c) 2001 Fabrice Bellard
|
2002-04-08 14:32:01 +02:00
|
|
|
*
|
2006-10-07 17:30:46 +02:00
|
|
|
* This file is part of FFmpeg.
|
|
|
|
*
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2002-05-26 00:34:32 +02:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 17:30:46 +02:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2002-04-08 14:32:01 +02:00
|
|
|
*
|
2006-10-07 17:30:46 +02:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2002-04-08 14:32:01 +02:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-26 00:34:32 +02:00
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* Lesser General Public License for more details.
|
2002-04-08 14:32:01 +02:00
|
|
|
*
|
2002-05-26 00:34:32 +02:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2006-10-07 17:30:46 +02:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-12 23:43:26 +01:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2002-04-08 14:32:01 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* First version by Francois Revol revol@free.fr
|
|
|
|
*
|
|
|
|
* Reference documents:
|
|
|
|
* http://www.opengroup.org/public/pubs/external/auformat.html
|
|
|
|
* http://www.goice.co.jp/member/mo/formats/au.html
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "avformat.h"
|
2010-08-30 23:17:34 +02:00
|
|
|
#include "pcm.h"
|
2006-07-12 02:09:34 +02:00
|
|
|
#include "riff.h"
|
2002-04-08 14:32:01 +02:00
|
|
|
|
|
|
|
/* if we don't know the size in advance */
|
2007-03-07 01:49:49 +01:00
|
|
|
#define AU_UNKNOWN_SIZE ((uint32_t)(~0))
|
2002-04-08 14:32:01 +02:00
|
|
|
|
|
|
|
/* The ffmpeg codecs we support, and the IDs they have in the file */
|
2007-01-21 02:39:17 +01:00
|
|
|
static const AVCodecTag codec_au_tags[] = {
|
2002-04-08 14:32:01 +02:00
|
|
|
{ CODEC_ID_PCM_MULAW, 1 },
|
2008-01-13 16:08:33 +01:00
|
|
|
{ CODEC_ID_PCM_S8, 2 },
|
2002-04-08 14:32:01 +02:00
|
|
|
{ CODEC_ID_PCM_S16BE, 3 },
|
2008-08-19 12:49:38 +02:00
|
|
|
{ CODEC_ID_PCM_S24BE, 4 },
|
|
|
|
{ CODEC_ID_PCM_S32BE, 5 },
|
2008-07-26 09:09:44 +02:00
|
|
|
{ CODEC_ID_PCM_F32BE, 6 },
|
2008-08-19 12:49:38 +02:00
|
|
|
{ CODEC_ID_PCM_F64BE, 7 },
|
2002-04-08 14:32:01 +02:00
|
|
|
{ CODEC_ID_PCM_ALAW, 27 },
|
2009-10-16 16:46:06 +02:00
|
|
|
{ CODEC_ID_NONE, 0 },
|
2002-04-08 14:32:01 +02:00
|
|
|
};
|
|
|
|
|
2009-01-14 00:44:16 +01:00
|
|
|
#if CONFIG_AU_MUXER
|
2002-04-08 14:32:01 +02:00
|
|
|
/* AUDIO_FILE header */
|
2011-02-20 11:04:12 +01:00
|
|
|
static int put_au_header(AVIOContext *pb, AVCodecContext *enc)
|
2002-04-08 14:32:01 +02:00
|
|
|
{
|
2003-08-18 11:20:02 +02:00
|
|
|
if(!enc->codec_tag)
|
2002-04-08 14:32:01 +02:00
|
|
|
return -1;
|
|
|
|
put_tag(pb, ".snd"); /* magic number */
|
2011-02-21 19:28:17 +01:00
|
|
|
avio_wb32(pb, 24); /* header size */
|
|
|
|
avio_wb32(pb, AU_UNKNOWN_SIZE); /* data size */
|
|
|
|
avio_wb32(pb, (uint32_t)enc->codec_tag); /* codec ID */
|
|
|
|
avio_wb32(pb, enc->sample_rate);
|
|
|
|
avio_wb32(pb, (uint32_t)enc->channels);
|
2002-04-08 14:32:01 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int au_write_header(AVFormatContext *s)
|
|
|
|
{
|
2011-02-20 11:04:12 +01:00
|
|
|
AVIOContext *pb = s->pb;
|
2002-04-08 14:32:01 +02:00
|
|
|
|
|
|
|
s->priv_data = NULL;
|
|
|
|
|
|
|
|
/* format header */
|
2005-07-18 00:24:36 +02:00
|
|
|
if (put_au_header(pb, s->streams[0]->codec) < 0) {
|
2002-04-08 14:32:01 +02:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
put_flush_packet(pb);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2004-05-29 04:06:32 +02:00
|
|
|
static int au_write_packet(AVFormatContext *s, AVPacket *pkt)
|
2002-04-08 14:32:01 +02:00
|
|
|
{
|
2011-02-20 11:04:12 +01:00
|
|
|
AVIOContext *pb = s->pb;
|
2011-02-21 19:28:17 +01:00
|
|
|
avio_write(pb, pkt->data, pkt->size);
|
2002-04-08 14:32:01 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int au_write_trailer(AVFormatContext *s)
|
|
|
|
{
|
2011-02-20 11:04:12 +01:00
|
|
|
AVIOContext *pb = s->pb;
|
2008-10-03 12:16:29 +02:00
|
|
|
int64_t file_size;
|
2002-04-08 14:32:01 +02:00
|
|
|
|
2007-11-21 08:41:00 +01:00
|
|
|
if (!url_is_streamed(s->pb)) {
|
2002-04-08 14:32:01 +02:00
|
|
|
|
|
|
|
/* update file size */
|
|
|
|
file_size = url_ftell(pb);
|
|
|
|
url_fseek(pb, 8, SEEK_SET);
|
2011-02-21 19:28:17 +01:00
|
|
|
avio_wb32(pb, (uint32_t)(file_size - 24));
|
2002-04-08 14:32:01 +02:00
|
|
|
url_fseek(pb, file_size, SEEK_SET);
|
|
|
|
|
|
|
|
put_flush_packet(pb);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2008-09-03 00:45:13 +02:00
|
|
|
#endif /* CONFIG_AU_MUXER */
|
2002-04-08 14:32:01 +02:00
|
|
|
|
2002-05-20 18:31:13 +02:00
|
|
|
static int au_probe(AVProbeData *p)
|
|
|
|
{
|
|
|
|
/* check file header */
|
|
|
|
if (p->buf[0] == '.' && p->buf[1] == 's' &&
|
|
|
|
p->buf[2] == 'n' && p->buf[3] == 'd')
|
|
|
|
return AVPROBE_SCORE_MAX;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2002-04-08 14:32:01 +02:00
|
|
|
/* au input */
|
|
|
|
static int au_read_header(AVFormatContext *s,
|
2003-11-10 19:41:45 +01:00
|
|
|
AVFormatParameters *ap)
|
2002-04-08 14:32:01 +02:00
|
|
|
{
|
|
|
|
int size;
|
|
|
|
unsigned int tag;
|
2011-02-20 11:04:12 +01:00
|
|
|
AVIOContext *pb = s->pb;
|
2008-10-02 18:03:00 +02:00
|
|
|
unsigned int id, channels, rate;
|
|
|
|
enum CodecID codec;
|
2002-04-08 14:32:01 +02:00
|
|
|
AVStream *st;
|
|
|
|
|
|
|
|
/* check ".snd" header */
|
2011-02-21 16:43:01 +01:00
|
|
|
tag = avio_rl32(pb);
|
2002-04-08 14:32:01 +02:00
|
|
|
if (tag != MKTAG('.', 's', 'n', 'd'))
|
|
|
|
return -1;
|
2011-02-21 16:43:01 +01:00
|
|
|
size = avio_rb32(pb); /* header size */
|
|
|
|
avio_rb32(pb); /* data size */
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2011-02-21 16:43:01 +01:00
|
|
|
id = avio_rb32(pb);
|
|
|
|
rate = avio_rb32(pb);
|
|
|
|
channels = avio_rb32(pb);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2009-06-23 01:09:34 +02:00
|
|
|
codec = ff_codec_get_id(codec_au_tags, id);
|
2002-04-08 14:32:01 +02:00
|
|
|
|
2010-05-31 12:47:36 +02:00
|
|
|
if (!av_get_bits_per_sample(codec)) {
|
|
|
|
av_log_ask_for_sample(s, "could not determine bits per sample\n");
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
|
|
|
|
2002-04-08 14:32:01 +02:00
|
|
|
if (size >= 24) {
|
|
|
|
/* skip unused data */
|
|
|
|
url_fseek(pb, size - 24, SEEK_CUR);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* now we are ready: build format streams */
|
2003-08-08 19:52:30 +02:00
|
|
|
st = av_new_stream(s, 0);
|
2002-04-08 14:32:01 +02:00
|
|
|
if (!st)
|
|
|
|
return -1;
|
2010-03-31 01:30:55 +02:00
|
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
2005-07-18 00:24:36 +02:00
|
|
|
st->codec->codec_tag = id;
|
|
|
|
st->codec->codec_id = codec;
|
|
|
|
st->codec->channels = channels;
|
|
|
|
st->codec->sample_rate = rate;
|
2004-10-18 11:43:39 +02:00
|
|
|
av_set_pts_info(st, 64, 1, rate);
|
2002-04-08 14:32:01 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-12-07 14:55:38 +01:00
|
|
|
#define BLOCK_SIZE 1024
|
2002-04-08 14:32:01 +02:00
|
|
|
|
|
|
|
static int au_read_packet(AVFormatContext *s,
|
2002-07-24 19:56:25 +02:00
|
|
|
AVPacket *pkt)
|
2002-04-08 14:32:01 +02:00
|
|
|
{
|
2002-07-24 19:56:25 +02:00
|
|
|
int ret;
|
2002-04-08 14:32:01 +02:00
|
|
|
|
2009-12-07 14:55:38 +01:00
|
|
|
ret= av_get_packet(s->pb, pkt, BLOCK_SIZE *
|
|
|
|
s->streams[0]->codec->channels *
|
|
|
|
av_get_bits_per_sample(s->streams[0]->codec->codec_id) >> 3);
|
2005-05-26 22:17:12 +02:00
|
|
|
if (ret < 0)
|
2009-10-01 19:08:33 +02:00
|
|
|
return ret;
|
2002-04-08 14:32:01 +02:00
|
|
|
pkt->stream_index = 0;
|
|
|
|
|
|
|
|
/* note: we need to modify the packet size here to handle the last
|
|
|
|
packet */
|
|
|
|
pkt->size = ret;
|
2002-07-24 19:56:25 +02:00
|
|
|
return 0;
|
2002-04-08 14:32:01 +02:00
|
|
|
}
|
|
|
|
|
2009-01-14 00:44:16 +01:00
|
|
|
#if CONFIG_AU_DEMUXER
|
2011-01-25 23:03:28 +01:00
|
|
|
AVInputFormat ff_au_demuxer = {
|
2002-05-20 18:31:13 +02:00
|
|
|
"au",
|
2008-06-03 18:20:54 +02:00
|
|
|
NULL_IF_CONFIG_SMALL("SUN AU format"),
|
2002-05-20 18:31:13 +02:00
|
|
|
0,
|
|
|
|
au_probe,
|
|
|
|
au_read_header,
|
|
|
|
au_read_packet,
|
2008-06-20 01:25:04 +02:00
|
|
|
NULL,
|
2003-11-10 19:41:45 +01:00
|
|
|
pcm_read_seek,
|
2008-08-24 18:51:50 +02:00
|
|
|
.codec_tag= (const AVCodecTag* const []){codec_au_tags, 0},
|
2002-05-20 18:31:13 +02:00
|
|
|
};
|
2006-07-10 23:14:37 +02:00
|
|
|
#endif
|
2002-05-20 18:31:13 +02:00
|
|
|
|
2009-01-14 00:44:16 +01:00
|
|
|
#if CONFIG_AU_MUXER
|
2011-01-25 23:03:28 +01:00
|
|
|
AVOutputFormat ff_au_muxer = {
|
2002-04-08 14:32:01 +02:00
|
|
|
"au",
|
2008-06-03 18:20:54 +02:00
|
|
|
NULL_IF_CONFIG_SMALL("SUN AU format"),
|
2002-04-08 14:32:01 +02:00
|
|
|
"audio/basic",
|
|
|
|
"au",
|
2002-05-20 18:31:13 +02:00
|
|
|
0,
|
2002-04-08 14:32:01 +02:00
|
|
|
CODEC_ID_PCM_S16BE,
|
|
|
|
CODEC_ID_NONE,
|
|
|
|
au_write_header,
|
|
|
|
au_write_packet,
|
|
|
|
au_write_trailer,
|
2008-08-24 18:51:50 +02:00
|
|
|
.codec_tag= (const AVCodecTag* const []){codec_au_tags, 0},
|
2002-04-08 14:32:01 +02:00
|
|
|
};
|
2006-07-10 23:14:37 +02:00
|
|
|
#endif //CONFIG_AU_MUXER
|