解析m4a格式头信息以获取aac解码需要的信息更多...

#include <stdint.h>
#include "parse_m4a_atom_containers_port.h"

结构体
struct	sound_format

struct	sound_flag

struct	media_sound

struct	esds_format

struct	media_info_typedef

struct	aac_stco_Typedef

struct	m4a_file_info_t

类型定义
typedef struct sound_format	sound_format

typedef struct sound_flag	sound_flag

typedef struct media_sound	media_sound

typedef struct esds_format	esds_format

typedef struct media_info_typedef	media_info_typedef

枚举
enum	AtomEnum { FTYP, WIDE, MDAT, MOOV, MVHD, TRAK, TKHD, TAPT, CLEF, PROF, ENOF, EDTS, ELST, MDIA, MDHD, HDLR, MINF, VMHD, SMHD, DINF, DREF, STBL, STSD, STTS, STSC, STSZ, STCO, UDTA, FREE, SKIP, META, LOAD, IODS, ILST, KEYS, DATA, TRKN, DISK, CPIL, PGAP, TMPO, GNRE, COVR, CNAM, CART, CALB, CGEN, CDAY, CTOO, CWRT, NONE }

函数
int32_t	alloc_m4a_info (m4a_file_info_t *m4a_file_info)
	申请m4a容器解码器更多...

int32_t	free_m4a_info (m4a_file_info_t *m4a_file_info)
	销毁m4a容器解码器更多...

int	collectMediaData (mem_file_t fp, m4a_file_info_t m4a_file_info, uint32_t parentAtomSize, uint32_t child)
	解析m4a容器更多...

详细描述

解析m4a格式头信息以获取aac解码需要的信息

版本: 1.0

日期: 2019-07-18

版权所有: Copyright (c) 2019 Chipintelli Technology Co., Ltd.

结构体说明

◆ sound_format

struct sound_format

成员变量
char	audioFmtString[4]
uint16_t	complesionID
uint16_t	dataRefIndex
uint16_t	numChannel
uint16_t	packetSize
uint8_t	reserved[6]
uint16_t	revision
uint16_t	sampleRateInteger
uint16_t	sampleRateReminder
uint16_t	sampleSize
uint32_t	vendor
uint16_t	version

◆ sound_flag

struct sound_flag

成员变量
uint32_t	complete
uint32_t	process

◆ media_sound

struct media_sound

成员变量
uint32_t	ctime
uint32_t	duration
sound_flag	flag
sound_format	format
uint32_t	mtime
uint32_t	timeScale

◆ esds_format

struct esds_format

成员变量
uint32_t	avgBitrate
char	esdsString[4]
uint32_t	maxBitrate

◆ media_info_typedef

struct media_info_typedef

成员变量
esds_format	bitrate
sound_format	format
media_sound	sound

◆ aac_stco_Typedef

struct aac_stco_Typedef

成员变量
int	mdatOffset
int	numEntry

◆ m4a_file_info_t

struct m4a_file_info_t

成员变量
aac_stco_Typedef *	aac_stco_struct
uint8_t *	albumTag
uint8_t *	artistTag
media_info_typedef *	media_info
uint8_t *	nameTag

类型定义说明

◆ esds_format

typedef struct esds_format esds_format

◆ media_info_typedef

typedef struct media_info_typedef media_info_typedef

◆ media_sound

typedef struct media_sound media_sound

◆ sound_flag

typedef struct sound_flag sound_flag

◆ sound_format

typedef struct sound_format sound_format

枚举类型说明

◆ AtomEnum

enum AtomEnum

枚举值
FTYP
WIDE
MDAT
MOOV
MVHD
TRAK
TKHD
TAPT
CLEF
PROF
ENOF
EDTS
ELST
MDIA
MDHD
HDLR
MINF
VMHD
SMHD
DINF
DREF
STBL
STSD
STTS
STSC
STSZ
STCO
UDTA
FREE
SKIP
META
LOAD
IODS
ILST
KEYS
DATA
TRKN
DISK
CPIL
PGAP
TMPO
GNRE
COVR
CNAM
CART
CALB
CGEN
CDAY
CTOO
CWRT
NONE

函数说明

◆ alloc_m4a_info()

int32_t alloc_m4a_info ( m4a_file_info_t * m4a_file_info )

申请m4a容器解码器

参数

m4a_file_info m4a容器解码器

返回值

RETURN_OK	申请成功
RETURN_ERR	申请失败

◆ collectMediaData()

int collectMediaData	(	mem_file_t *	fp,
		m4a_file_info_t *	m4a_file_info,
		uint32_t	parentAtomSize,
		uint32_t	child
	)

解析m4a容器

参数

fp	数据读取描述符
m4a_file_info	m4a容器解码器
parentAtomSize	文件大小
child	atom节点

返回值

RETURN_OK	播放启动成功
RETURN_ERR	播放启动失败

◆ free_m4a_info()

int32_t free_m4a_info ( m4a_file_info_t * m4a_file_info )

销毁m4a容器解码器

参数

m4a_file_info m4a容器解码器

返回值

RETURN_OK	销毁成功
RETURN_ERR	销毁失败