generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

omadec: split data that will be used in the muxer to a separate file.

Browse Source
This commit is contained in:
Anton Khirnov 2011-12-17 15:23:13 +01:00
parent 08f7af0c37
commit ee20b332c8
4 changed files with 78 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavformat/Makefile
View File

@ -178,7 +178,7 @@ OBJS-$(CONFIG_OGG_DEMUXER) += oggdec.o \
vorbiscomment.o
OBJS-$(CONFIG_OGG_MUXER) += oggenc.o \
vorbiscomment.o
OBJS-$(CONFIG_OMA_DEMUXER) += omadec.o pcm.o
OBJS-$(CONFIG_OMA_DEMUXER) += omadec.o pcm.o oma.o
OBJS-$(CONFIG_PCM_ALAW_DEMUXER) += pcmdec.o pcm.o rawdec.o
OBJS-$(CONFIG_PCM_ALAW_MUXER) += pcmenc.o rawenc.o
OBJS-$(CONFIG_PCM_F32BE_DEMUXER) += pcmdec.o pcm.o rawdec.o

33
libavformat/oma.c Normal file
View File

@ -0,0 +1,33 @@
/*
* Sony OpenMG (OMA) common data
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "internal.h"
#include "oma.h"
#include "libavcodec/avcodec.h"
const uint16_t ff_oma_srate_tab[6] = { 320, 441, 480, 882, 960, 0 };
const AVCodecTag ff_oma_codec_tags[] = {
{ CODEC_ID_ATRAC3, OMA_CODECID_ATRAC3 },
{ CODEC_ID_ATRAC3P, OMA_CODECID_ATRAC3P },
{ CODEC_ID_MP3, OMA_CODECID_MP3 },
{ CODEC_ID_PCM_S16BE, OMA_CODECID_LPCM },
{ 0 },
};

39
libavformat/oma.h Normal file
View File

@ -0,0 +1,39 @@
/*
* Sony OpenMG (OMA) common data
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_OMA_H
#define AVFORMAT_OMA_H
#define EA3_HEADER_SIZE 96
#define ID3v2_EA3_MAGIC "ea3"
#define OMA_ENC_HEADER_SIZE 16
enum {
OMA_CODECID_ATRAC3 = 0,
OMA_CODECID_ATRAC3P = 1,
OMA_CODECID_MP3 = 3,
OMA_CODECID_LPCM = 4,
OMA_CODECID_WMA = 5,
};
extern const uint16_t ff_oma_srate_tab[6];
extern const AVCodecTag ff_oma_codec_tags[];
#endif

28
libavformat/omadec.c
View File

@ -44,28 +44,11 @@
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/des.h"
#include "oma.h"
#include "pcm.h"
#include "riff.h"
#include "id3v2.h"
#define EA3_HEADER_SIZE 96
#define ID3v2_EA3_MAGIC "ea3"
#define OMA_ENC_HEADER_SIZE 16
enum {
OMA_CODECID_ATRAC3 = 0,
OMA_CODECID_ATRAC3P = 1,
OMA_CODECID_MP3 = 3,
OMA_CODECID_LPCM = 4,
OMA_CODECID_WMA = 5,
};
static const AVCodecTag codec_oma_tags[] = {
{ CODEC_ID_ATRAC3, OMA_CODECID_ATRAC3 },
{ CODEC_ID_ATRAC3P, OMA_CODECID_ATRAC3P },
{ CODEC_ID_MP3, OMA_CODECID_MP3 },
{ CODEC_ID_PCM_S16BE, OMA_CODECID_LPCM },
};
static const uint64_t leaf_table[] = {
0xd79e8283acea4620, 0x7a9762f445afd0d8,
@ -276,7 +259,6 @@ static int decrypt_init(AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
static int oma_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
static const uint16_t srate_tab[6] = {320,441,480,882,960,0};
int ret, framesize, jsflag, samplerate;
uint32_t codec_params;
int16_t eid;
@ -316,11 +298,11 @@ static int oma_read_header(AVFormatContext *s,
st->start_time = 0;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = buf[32];
st->codec->codec_id = ff_codec_get_id(codec_oma_tags, st->codec->codec_tag);
st->codec->codec_id = ff_codec_get_id(ff_oma_codec_tags, st->codec->codec_tag);
switch (buf[32]) {
case OMA_CODECID_ATRAC3:
samplerate = srate_tab[(codec_params >> 13) & 7]*100;
samplerate = ff_oma_srate_tab[(codec_params >> 13) & 7]*100;
if (samplerate != 44100)
av_log_ask_for_sample(s, "Unsupported sample rate: %d\n",
samplerate);
@ -350,7 +332,7 @@ static int oma_read_header(AVFormatContext *s,
case OMA_CODECID_ATRAC3P:
st->codec->channels = (codec_params >> 10) & 7;
framesize = ((codec_params & 0x3FF) * 8) + 8;
st->codec->sample_rate = srate_tab[(codec_params >> 13) & 7]*100;
st->codec->sample_rate = ff_oma_srate_tab[(codec_params >> 13) & 7]*100;
st->codec->bit_rate = st->codec->sample_rate * framesize * 8 / 1024;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
av_log(s, AV_LOG_ERROR, "Unsupported codec ATRAC3+!\n");
@ -459,6 +441,6 @@ AVInputFormat ff_oma_demuxer = {
.read_seek = oma_read_seek,
.flags = AVFMT_GENERIC_INDEX,
.extensions = "oma,omg,aa3",
.codec_tag = (const AVCodecTag* const []){codec_oma_tags, 0},
.codec_tag = (const AVCodecTag* const []){ff_oma_codec_tags, 0},
};