aaccommon.h File Reference

#include "ConfigHelix.h"
#include "utils/helix_pgm.h"
#include "aacdec.h"
#include "statname.h"

Include dependency graph for aaccommon.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
struct	_AACDecInfo

Macros
#define	AAC_ENABLE_SBR
#define	SYNCWORDH   0xff
#define	SYNCWORDL   0xf0
#define	MAX_NCHANS_ELEM   2 /* max number of channels in any single bitstream element (SCE,CPE,CCE,LFE) */
#define	ADTS_HEADER_BYTES   7
#define	NUM_SAMPLE_RATES   12
#define	NUM_DEF_CHAN_MAPS   8
#define	NUM_ELEMENTS   8
#define	MAX_NUM_PCE_ADIF   16
#define	MAX_WIN_GROUPS   8
#define	MAX_SFB_SHORT   15
#define	MAX_SF_BANDS   (MAX_SFB_SHORT*MAX_WIN_GROUPS) /* worst case = 15 sfb's * 8 windows for short block */
#define	MAX_MS_MASK_BYTES   ((MAX_SF_BANDS + 7) >> 3)
#define	MAX_PRED_SFB   41
#define	MAX_TNS_FILTERS   8
#define	MAX_TNS_COEFS   60
#define	MAX_TNS_ORDER   20
#define	MAX_PULSES   4
#define	MAX_GAIN_BANDS   3
#define	MAX_GAIN_WIN   8
#define	MAX_GAIN_ADJUST   7
#define	NSAMPS_LONG   1024
#define	NSAMPS_SHORT   128
#define	NUM_SYN_ID_BITS   3
#define	NUM_INST_TAG_BITS   4
#define	EXT_SBR_DATA   0x0d
#define	EXT_SBR_DATA_CRC   0x0e
#define	IS_ADIF(p)   ((p)[0] == 'A' && (p)[1] == 'D' && (p)[2] == 'I' && (p)[3] == 'F')
#define	GET_ELE_ID(p)   ((AACElementID)(*(p) >> (8-NUM_SYN_ID_BITS)))

Typedefs
typedef struct _AACDecInfo	AACDecInfo

Enumerations
enum	{ AAC_FF_Unknown = 0 , AAC_FF_ADTS = 1 , AAC_FF_ADIF = 2 , AAC_FF_RAW = 3 }
enum	{   AAC_ID_INVALID = -1 , AAC_ID_SCE = 0 , AAC_ID_CPE = 1 , AAC_ID_CCE = 2 ,   AAC_ID_LFE = 3 , AAC_ID_DSE = 4 , AAC_ID_PCE = 5 , AAC_ID_FIL = 6 ,   AAC_ID_END = 7 }

Functions
AACDecInfo *	AllocateBuffers (void)
AACDecInfo *	AllocateBuffersPre (void **space, int *len)
void	FreeBuffers (AACDecInfo *aacDecInfo)
void	ClearBuffer (void *buf, int nBytes)
int	UnpackADTSHeader (AACDecInfo *aacDecInfo, unsigned char **buf, int *bitOffset, int *bitsAvail)
int	GetADTSChannelMapping (AACDecInfo *aacDecInfo, unsigned char *buf, int bitOffset, int bitsAvail)
int	UnpackADIFHeader (AACDecInfo *aacDecInfo, unsigned char **buf, int *bitOffset, int *bitsAvail)
int	SetRawBlockParams (AACDecInfo *aacDecInfo, int copyLast, int nChans, int sampRate, int profile)
int	PrepareRawBlock (AACDecInfo *aacDecInfo)
int	FlushCodec (AACDecInfo *aacDecInfo)
int	DecodeNextElement (AACDecInfo *aacDecInfo, unsigned char **buf, int *bitOffset, int *bitsAvail)
int	DecodeNoiselessData (AACDecInfo *aacDecInfo, unsigned char **buf, int *bitOffset, int *bitsAvail, int ch)
int	Dequantize (AACDecInfo *aacDecInfo, int ch)
int	StereoProcess (AACDecInfo *aacDecInfo)
int	DeinterleaveShortBlocks (AACDecInfo *aacDecInfo, int ch)
int	PNS (AACDecInfo *aacDecInfo, int ch)
int	TNSFilter (AACDecInfo *aacDecInfo, int ch)
int	IMDCT (AACDecInfo *aacDecInfo, int ch, int chBase, short *outbuf)
int	InitSBR (AACDecInfo *aacDecInfo)
int	InitSBRPre (AACDecInfo *aacDecInfo, void **ptr, int *sz)
void	FreeSBR (AACDecInfo *aacDecInfo)
int	DecodeSBRBitstream (AACDecInfo *aacDecInfo, int chBase)
int	DecodeSBRData (AACDecInfo *aacDecInfo, int chBase, short *outbuf)
int	FlushCodecSBR (AACDecInfo *aacDecInfo)

Variables
const int	sampRateTab [NUM_SAMPLE_RATES]
const int	predSFBMax [NUM_SAMPLE_RATES]
const int	channelMapTab [NUM_DEF_CHAN_MAPS]
const int	elementNumChans [NUM_ELEMENTS]
const unsigned int	sfBandTotalShort [NUM_SAMPLE_RATES]
const unsigned int	sfBandTotalLong [NUM_SAMPLE_RATES]
const int	sfBandTabShortOffset [NUM_SAMPLE_RATES]
const int	sfBandTabShort [76]
const int	sfBandTabLongOffset [NUM_SAMPLE_RATES]
const int	sfBandTabLong [325]
const int	tnsMaxBandsShortOffset [AAC_NUM_PROFILES]
const unsigned int	tnsMaxBandsShort [2 *NUM_SAMPLE_RATES]
const unsigned int	tnsMaxOrderShort [AAC_NUM_PROFILES]
const int	tnsMaxBandsLongOffset [AAC_NUM_PROFILES]
const unsigned int	tnsMaxBandsLong [2 *NUM_SAMPLE_RATES]
const unsigned int	tnsMaxOrderLong [AAC_NUM_PROFILES]

Macro Definition Documentation

AAC_ENABLE_SBR

#define AAC_ENABLE_SBR

ADTS_HEADER_BYTES

#define ADTS_HEADER_BYTES   7

EXT_SBR_DATA

#define EXT_SBR_DATA   0x0d

EXT_SBR_DATA_CRC

#define EXT_SBR_DATA_CRC   0x0e

GET_ELE_ID

#define GET_ELE_ID

(

p

)

((AACElementID)(*(p) >> (8-NUM_SYN_ID_BITS)))

IS_ADIF

#define IS_ADIF

(

p

)

((p)[0] == 'A' && (p)[1] == 'D' && (p)[2] == 'I' && (p)[3] == 'F')

MAX_GAIN_ADJUST

#define MAX_GAIN_ADJUST   7

MAX_GAIN_BANDS

#define MAX_GAIN_BANDS   3

MAX_GAIN_WIN

#define MAX_GAIN_WIN   8

MAX_MS_MASK_BYTES

#define MAX_MS_MASK_BYTES   ((MAX_SF_BANDS + 7) >> 3)

MAX_NCHANS_ELEM

#define MAX_NCHANS_ELEM   2 /* max number of channels in any single bitstream element (SCE,CPE,CCE,LFE) */

MAX_NUM_PCE_ADIF

#define MAX_NUM_PCE_ADIF   16

MAX_PRED_SFB

#define MAX_PRED_SFB   41

MAX_PULSES

#define MAX_PULSES   4

MAX_SF_BANDS

#define MAX_SF_BANDS   (MAX_SFB_SHORT*MAX_WIN_GROUPS) /* worst case = 15 sfb's * 8 windows for short block */

MAX_SFB_SHORT

#define MAX_SFB_SHORT   15

MAX_TNS_COEFS

#define MAX_TNS_COEFS   60

MAX_TNS_FILTERS

#define MAX_TNS_FILTERS   8

MAX_TNS_ORDER

#define MAX_TNS_ORDER   20

MAX_WIN_GROUPS

#define MAX_WIN_GROUPS   8

NSAMPS_LONG

#define NSAMPS_LONG   1024

NSAMPS_SHORT

#define NSAMPS_SHORT   128

NUM_DEF_CHAN_MAPS

#define NUM_DEF_CHAN_MAPS   8

NUM_ELEMENTS

#define NUM_ELEMENTS   8

NUM_INST_TAG_BITS

#define NUM_INST_TAG_BITS   4

NUM_SAMPLE_RATES

#define NUM_SAMPLE_RATES   12

NUM_SYN_ID_BITS

#define NUM_SYN_ID_BITS   3

SYNCWORDH

#define SYNCWORDH   0xff

SYNCWORDL

#define SYNCWORDL   0xf0

Typedef Documentation

AACDecInfo

typedef struct _AACDecInfo AACDecInfo

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
AAC_FF_Unknown
AAC_FF_ADTS
AAC_FF_ADIF
AAC_FF_RAW

anonymous enum

anonymous enum

Enumerator
AAC_ID_INVALID
AAC_ID_SCE
AAC_ID_CPE
AAC_ID_CCE
AAC_ID_LFE
AAC_ID_DSE
AAC_ID_PCE
AAC_ID_FIL
AAC_ID_END

Function Documentation

AllocateBuffers()

AACDecInfo * AllocateBuffers

(

void

)

AllocateBuffersPre()

AACDecInfo * AllocateBuffersPre	(	void **	space,
		int *	len
	)

ClearBuffer()

void ClearBuffer	(	void *	buf,
		int	nBytes
	)

DecodeNextElement()

int DecodeNextElement	(	AACDecInfo *	aacDecInfo,
		unsigned char **	buf,
		int *	bitOffset,
		int *	bitsAvail
	)

DecodeNoiselessData()

int DecodeNoiselessData	(	AACDecInfo *	aacDecInfo,
		unsigned char **	buf,
		int *	bitOffset,
		int *	bitsAvail,
		int	ch
	)

DecodeSBRBitstream()

int DecodeSBRBitstream	(	AACDecInfo *	aacDecInfo,
		int	chBase
	)

DecodeSBRData()

int DecodeSBRData	(	AACDecInfo *	aacDecInfo,
		int	chBase,
		short *	outbuf
	)

DeinterleaveShortBlocks()

int DeinterleaveShortBlocks	(	AACDecInfo *	aacDecInfo,
		int	ch
	)

Dequantize()

int Dequantize	(	AACDecInfo *	aacDecInfo,
		int	ch
	)

FlushCodec()

int FlushCodec

(

AACDecInfo *

aacDecInfo

)

FlushCodecSBR()

int FlushCodecSBR

(

AACDecInfo *

aacDecInfo

)

FreeBuffers()

void FreeBuffers

(

AACDecInfo *

aacDecInfo

)

FreeSBR()

void FreeSBR

(

AACDecInfo *

aacDecInfo

)

GetADTSChannelMapping()

int GetADTSChannelMapping	(	AACDecInfo *	aacDecInfo,
		unsigned char *	buf,
		int	bitOffset,
		int	bitsAvail
	)

IMDCT()

int IMDCT	(	AACDecInfo *	aacDecInfo,
		int	ch,
		int	chBase,
		short *	outbuf
	)

InitSBR()

int InitSBR

(

AACDecInfo *

aacDecInfo

)

InitSBRPre()

int InitSBRPre	(	AACDecInfo *	aacDecInfo,
		void **	ptr,
		int *	sz
	)

PNS()

int PNS	(	AACDecInfo *	aacDecInfo,
		int	ch
	)

PrepareRawBlock()

int PrepareRawBlock

(

AACDecInfo *

aacDecInfo

)

SetRawBlockParams()

int SetRawBlockParams	(	AACDecInfo *	aacDecInfo,
		int	copyLast,
		int	nChans,
		int	sampRate,
		int	profile
	)

StereoProcess()

int StereoProcess

(

AACDecInfo *

aacDecInfo

)

TNSFilter()

int TNSFilter	(	AACDecInfo *	aacDecInfo,
		int	ch
	)

UnpackADIFHeader()

int UnpackADIFHeader	(	AACDecInfo *	aacDecInfo,
		unsigned char **	buf,
		int *	bitOffset,
		int *	bitsAvail
	)

UnpackADTSHeader()

int UnpackADTSHeader	(	AACDecInfo *	aacDecInfo,
		unsigned char **	buf,
		int *	bitOffset,
		int *	bitsAvail
	)

Variable Documentation

channelMapTab

const int channelMapTab[NUM_DEF_CHAN_MAPS]

extern

elementNumChans

const int elementNumChans[NUM_ELEMENTS]

extern

predSFBMax

const int predSFBMax[NUM_SAMPLE_RATES]

extern

sampRateTab

const int sampRateTab[NUM_SAMPLE_RATES]

extern

sfBandTabLong

const int sfBandTabLong[325]

extern

sfBandTabLongOffset

const int sfBandTabLongOffset[NUM_SAMPLE_RATES]

extern

sfBandTabShort

const int sfBandTabShort[76]

extern

sfBandTabShortOffset

const int sfBandTabShortOffset[NUM_SAMPLE_RATES]

extern

sfBandTotalLong

const unsigned int sfBandTotalLong[NUM_SAMPLE_RATES]

extern

sfBandTotalShort

const unsigned int sfBandTotalShort[NUM_SAMPLE_RATES]

extern

tnsMaxBandsLong

const unsigned int tnsMaxBandsLong[2 *NUM_SAMPLE_RATES]

extern

tnsMaxBandsLongOffset

const int tnsMaxBandsLongOffset[AAC_NUM_PROFILES]

extern

tnsMaxBandsShort

const unsigned int tnsMaxBandsShort[2 *NUM_SAMPLE_RATES]

extern

tnsMaxBandsShortOffset

const int tnsMaxBandsShortOffset[AAC_NUM_PROFILES]

extern

tnsMaxOrderLong

const unsigned int tnsMaxOrderLong[AAC_NUM_PROFILES]

extern

tnsMaxOrderShort

const unsigned int tnsMaxOrderShort[AAC_NUM_PROFILES]

extern