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omadec.c File Reference

This is a demuxer for Sony OpenMG Music files. More...

#include <inttypes.h>
#include "libavutil/channel_layout.h"
#include "avformat.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/des.h"
#include "oma.h"
#include "pcm.h"
#include "id3v2.h"

Go to the source code of this file.

Data Structures

struct  OMAContext
 

Macros

#define OMA_RPROBE_M_VAL   48 + 1
 

Functions

static void hex_log (AVFormatContext *s, int level, const char *name, const uint8_t *value, int len)
 
static int kset (AVFormatContext *s, const uint8_t *r_val, const uint8_t *n_val, int len)
 
static int rprobe (AVFormatContext *s, uint8_t *enc_header, unsigned size, const uint8_t *r_val)
 
static int nprobe (AVFormatContext *s, uint8_t *enc_header, unsigned size, const uint8_t *n_val)
 
static int decrypt_init (AVFormatContext *s, ID3v2ExtraMeta *em, uint8_t *header)
 
static int oma_read_header (AVFormatContext *s)
 
static int oma_read_packet (AVFormatContext *s, AVPacket *pkt)
 
static int oma_read_probe (AVProbeData *p)
 
static int oma_read_seek (struct AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
 

Variables

static const uint64_t leaf_table []
 
AVInputFormat ff_oma_demuxer
 

Detailed Description

This is a demuxer for Sony OpenMG Music files.

Known file extensions: ".oma", "aa3" The format of such files consists of three parts:

Supported decoders: ATRAC3, ATRAC3+, MP3, LPCM

Definition in file omadec.c.

Macro Definition Documentation

#define OMA_RPROBE_M_VAL   48 + 1

Definition at line 120 of file omadec.c.

Referenced by rprobe().

Function Documentation

static void hex_log ( AVFormatContext s,
int  level,
const char *  name,
const uint8_t value,
int  len 
)
static

Definition at line 79 of file omadec.c.

Referenced by decrypt_init().

static int kset ( AVFormatContext s,
const uint8_t r_val,
const uint8_t n_val,
int  len 
)
static

Definition at line 91 of file omadec.c.

Referenced by decrypt_init(), and nprobe().

static int rprobe ( AVFormatContext s,
uint8_t enc_header,
unsigned  size,
const uint8_t r_val 
)
static

Definition at line 122 of file omadec.c.

Referenced by nprobe().

static int nprobe ( AVFormatContext s,
uint8_t enc_header,
unsigned  size,
const uint8_t n_val 
)
static

Definition at line 152 of file omadec.c.

static int decrypt_init ( AVFormatContext s,
ID3v2ExtraMeta em,
uint8_t header 
)
static

Definition at line 194 of file omadec.c.

Referenced by oma_read_header().

static int oma_read_header ( AVFormatContext s)
static

Definition at line 287 of file omadec.c.

static int oma_read_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 413 of file omadec.c.

static int oma_read_probe ( AVProbeData p)
static

Definition at line 442 of file omadec.c.

static int oma_read_seek ( struct AVFormatContext s,
int  stream_index,
int64_t  timestamp,
int  flags 
)
static

Definition at line 463 of file omadec.c.

Variable Documentation

const uint64_t leaf_table[]
static
Initial value:
= {
0xd79e8283acea4620, 0x7a9762f445afd0d8,
0x354d60a60b8c79f1, 0x584e1cde00b07aee,
0x1573cd93da7df623, 0x47f98d79620dd535
}

Definition at line 55 of file omadec.c.

AVInputFormat ff_oma_demuxer
Initial value:
= {
.name = "oma",
.long_name = NULL_IF_CONFIG_SMALL("Sony OpenMG audio"),
.priv_data_size = sizeof(OMAContext),
.extensions = "oma,omg,aa3",
.codec_tag = (const AVCodecTag* const []){ff_oma_codec_tags, 0},
}

Definition at line 489 of file omadec.c.