#include "mp3common.h"

Go to the source code of this file.

Data Structures
struct	_BitStreamInfo

struct	_FrameHeader

struct	_SideInfoSub

struct	_SideInfo

struct	CriticalBandInfo

struct	_DequantInfo

struct	_HuffmanInfo

struct	_HuffTabLookup

struct	_IMDCTInfo

struct	_BlockCount

struct	_ScaleFactorInfoSub

struct	_ScaleFactorJS

struct	_ScaleFactorInfo

struct	_SubbandInfo

Macros
#define	ASSERT(x)

#define	MAX(a, b)

#define	MIN(a, b)

#define	CLIP_2N(y, n)

#define	SIBYTES_MPEG1_MONO 17

#define	SIBYTES_MPEG1_STEREO 32

#define	SIBYTES_MPEG2_MONO 9

#define	SIBYTES_MPEG2_STEREO 17

#define	POW43_FRACBITS_LOW 22

#define	POW43_FRACBITS_HIGH 12

#define	DQ_FRACBITS_OUT 25 /* number of fraction bits in output of dequant */

#define	IMDCT_SCALE 2 /* additional scaling (by sqrt(2)) for fast IMDCT36 */

#define	HUFF_PAIRTABS 32

#define	BLOCK_SIZE 18

#define	NBANDS 32

#define	MAX_REORDER_SAMPS ((192-126)3) / largest critical band for short blocks (see sfBandTable) */

#define	VBUF_LENGTH (17 * 2 * NBANDS) /* for double-sized vbuf FIFO */

#define	SetBitstreamPointer STATNAME(SetBitstreamPointer)

#define	GetBits STATNAME(GetBits)

#define	CalcBitsUsed STATNAME(CalcBitsUsed)

#define	DequantChannel STATNAME(DequantChannel)

#define	MidSideProc STATNAME(MidSideProc)

#define	IntensityProcMPEG1 STATNAME(IntensityProcMPEG1)

#define	IntensityProcMPEG2 STATNAME(IntensityProcMPEG2)

#define	PolyphaseMono STATNAME(PolyphaseMono)

#define	PolyphaseStereo STATNAME(PolyphaseStereo)

#define	FDCT32 STATNAME(FDCT32)

#define	ISFMpeg1 STATNAME(ISFMpeg1)

#define	ISFMpeg2 STATNAME(ISFMpeg2)

#define	ISFIIP STATNAME(ISFIIP)

#define	uniqueIDTab STATNAME(uniqueIDTab)

#define	coef32 STATNAME(coef32)

#define	polyCoef STATNAME(polyCoef)

#define	csa STATNAME(csa)

#define	imdctWin STATNAME(imdctWin)

#define	huffTable STATNAME(huffTable)

#define	huffTabOffset STATNAME(huffTabOffset)

#define	huffTabLookup STATNAME(huffTabLookup)

#define	quadTable STATNAME(quadTable)

#define	quadTabOffset STATNAME(quadTabOffset)

#define	quadTabMaxBits STATNAME(quadTabMaxBits)

Typedefs
typedef struct _BitStreamInfo	BitStreamInfo

typedef struct _FrameHeader	FrameHeader

typedef struct _SideInfoSub	SideInfoSub

typedef struct _SideInfo	SideInfo

typedef struct _DequantInfo	DequantInfo

typedef struct _HuffmanInfo	HuffmanInfo

typedef enum _HuffTabType	HuffTabType

typedef struct _HuffTabLookup	HuffTabLookup

typedef struct _IMDCTInfo	IMDCTInfo

typedef struct _BlockCount	BlockCount

typedef struct _ScaleFactorInfoSub	ScaleFactorInfoSub

typedef struct _ScaleFactorJS	ScaleFactorJS

typedef struct _ScaleFactorInfo	ScaleFactorInfo

typedef struct _SubbandInfo	SubbandInfo

Enumerations
enum	StereoMode { Stereo = 0x00 , Joint = 0x01 , Dual = 0x02 , Mono = 0x03 }

enum	_HuffTabType { noBits , oneShot , loopNoLinbits , loopLinbits , quadA , quadB , invalidTab }

Functions
void	SetBitstreamPointer (BitStreamInfo bsi, int nBytes, unsigned char buf)

unsigned int	GetBits (BitStreamInfo *bsi, int nBits)

int	CalcBitsUsed (BitStreamInfo bsi, unsigned char startBuf, int startOffset)

int	DequantChannel (int sampleBuf, int workBuf, int nonZeroBound, FrameHeader fh, SideInfoSub sis, ScaleFactorInfoSub sfis, CriticalBandInfo *cbi)

void	MidSideProc (int x[MAX_NCHAN][MAX_NSAMP], int nSamps, int mOut[2])

void	IntensityProcMPEG1 (int x[MAX_NCHAN][MAX_NSAMP], int nSamps, FrameHeader fh, ScaleFactorInfoSub sfis, CriticalBandInfo *cbi, int midSideFlag, int mixFlag, int mOut[2])

void	IntensityProcMPEG2 (int x[MAX_NCHAN][MAX_NSAMP], int nSamps, FrameHeader fh, ScaleFactorInfoSub sfis, CriticalBandInfo cbi, ScaleFactorJS sfjs, int midSideFlag, int mixFlag, int mOut[2])

void	FDCT32 (int x, int d, int offset, int oddBlock, int gb)

void	PolyphaseMono (short pcm, int vbuf, const int *coefBase)

void	PolyphaseStereo (short pcm, int vbuf, const int *coefBase)

Variables
const HuffTabLookup	huffTabLookup [HUFF_PAIRTABS]

const int	huffTabOffset [HUFF_PAIRTABS]

const unsigned short	huffTable []

const unsigned char	quadTable [64+16]

const int	quadTabOffset [2]

const int	quadTabMaxBits [2]

const int	imdctWin [4][36]

const int	ISFMpeg1 [2][7]

const int	ISFMpeg2 [2][2][16]

const int	ISFIIP [2][2]

const int	csa [8][2]

const int	coef32 [31]

const int	polyCoef [264]

Macro Definition Documentation

◆ ASSERT

#define ASSERT ( x )

Value:

/* do nothing */

Definition at line 55 of file coder.h.

◆ BLOCK_SIZE

#define BLOCK_SIZE 18

Definition at line 87 of file coder.h.

◆ CalcBitsUsed

#define CalcBitsUsed STATNAME(CalcBitsUsed)

Definition at line 95 of file coder.h.

◆ CLIP_2N

#define CLIP_2N	(		y,
			n )

Value:

  { \
  int sign = (y) >> 31;  \
  if (sign != (y) >> (n))  { \
    (y) = sign ^ ((1 << (n)) - 1); \
  } \
}

Definition at line 67 of file coder.h.

◆ coef32

#define coef32 STATNAME(coef32)

Definition at line 108 of file coder.h.

◆ csa

#define csa STATNAME(csa)

Definition at line 110 of file coder.h.

◆ DequantChannel

#define DequantChannel STATNAME(DequantChannel)

Definition at line 96 of file coder.h.

◆ DQ_FRACBITS_OUT

#define DQ_FRACBITS_OUT 25 /* number of fraction bits in output of dequant */

Definition at line 83 of file coder.h.

◆ FDCT32

#define FDCT32 STATNAME(FDCT32)

Definition at line 102 of file coder.h.

◆ GetBits

#define GetBits STATNAME(GetBits)

Definition at line 94 of file coder.h.

◆ HUFF_PAIRTABS

#define HUFF_PAIRTABS 32

Definition at line 86 of file coder.h.

◆ huffTable

#define huffTable STATNAME(huffTable)

Definition at line 113 of file coder.h.

◆ huffTabLookup

#define huffTabLookup STATNAME(huffTabLookup)

Definition at line 115 of file coder.h.

◆ huffTabOffset

#define huffTabOffset STATNAME(huffTabOffset)

Definition at line 114 of file coder.h.

◆ IMDCT_SCALE

#define IMDCT_SCALE 2 /* additional scaling (by sqrt(2)) for fast IMDCT36 */

Definition at line 84 of file coder.h.

◆ imdctWin

#define imdctWin STATNAME(imdctWin)

Definition at line 111 of file coder.h.

◆ IntensityProcMPEG1

#define IntensityProcMPEG1 STATNAME(IntensityProcMPEG1)

Definition at line 98 of file coder.h.

◆ IntensityProcMPEG2

#define IntensityProcMPEG2 STATNAME(IntensityProcMPEG2)

Definition at line 99 of file coder.h.

◆ ISFIIP

#define ISFIIP STATNAME(ISFIIP)

Definition at line 106 of file coder.h.

◆ ISFMpeg1

#define ISFMpeg1 STATNAME(ISFMpeg1)

Definition at line 104 of file coder.h.

◆ ISFMpeg2

#define ISFMpeg2 STATNAME(ISFMpeg2)

Definition at line 105 of file coder.h.

◆ MAX

#define MAX	(		a,
			b )

Value:

((a) > (b) ? (a) : (b))

Definition at line 59 of file coder.h.

◆ MAX_REORDER_SAMPS

#define MAX_REORDER_SAMPS ((192-126)*3) /* largest critical band for short blocks (see sfBandTable) */

Definition at line 89 of file coder.h.

◆ MidSideProc

#define MidSideProc STATNAME(MidSideProc)

Definition at line 97 of file coder.h.

◆ MIN

#define MIN	(		a,
			b )

Value:

((a) < (b) ? (a) : (b))

Definition at line 63 of file coder.h.

◆ NBANDS

#define NBANDS 32

Definition at line 88 of file coder.h.

◆ polyCoef

#define polyCoef STATNAME(polyCoef)

Definition at line 109 of file coder.h.

◆ PolyphaseMono

#define PolyphaseMono STATNAME(PolyphaseMono)

Definition at line 100 of file coder.h.

◆ PolyphaseStereo

#define PolyphaseStereo STATNAME(PolyphaseStereo)

Definition at line 101 of file coder.h.

◆ POW43_FRACBITS_HIGH

#define POW43_FRACBITS_HIGH 12

Definition at line 81 of file coder.h.

◆ POW43_FRACBITS_LOW

#define POW43_FRACBITS_LOW 22

Definition at line 80 of file coder.h.

◆ quadTable

#define quadTable STATNAME(quadTable)

Definition at line 116 of file coder.h.

◆ quadTabMaxBits

#define quadTabMaxBits STATNAME(quadTabMaxBits)

Definition at line 118 of file coder.h.

◆ quadTabOffset

#define quadTabOffset STATNAME(quadTabOffset)

Definition at line 117 of file coder.h.

◆ SetBitstreamPointer

#define SetBitstreamPointer STATNAME(SetBitstreamPointer)

Definition at line 93 of file coder.h.

◆ SIBYTES_MPEG1_MONO

#define SIBYTES_MPEG1_MONO 17

Definition at line 74 of file coder.h.

◆ SIBYTES_MPEG1_STEREO

#define SIBYTES_MPEG1_STEREO 32

Definition at line 75 of file coder.h.

◆ SIBYTES_MPEG2_MONO

#define SIBYTES_MPEG2_MONO 9

Definition at line 76 of file coder.h.

◆ SIBYTES_MPEG2_STEREO

#define SIBYTES_MPEG2_STEREO 17

Definition at line 77 of file coder.h.

◆ uniqueIDTab

#define uniqueIDTab STATNAME(uniqueIDTab)

Definition at line 107 of file coder.h.

◆ VBUF_LENGTH

#define VBUF_LENGTH (17 * 2 * NBANDS) /* for double-sized vbuf FIFO */

Definition at line 90 of file coder.h.

Typedef Documentation

◆ BitStreamInfo

typedef struct _BitStreamInfo BitStreamInfo

◆ BlockCount

typedef struct _BlockCount BlockCount

◆ DequantInfo

typedef struct _DequantInfo DequantInfo

◆ FrameHeader

typedef struct _FrameHeader FrameHeader

◆ HuffmanInfo

typedef struct _HuffmanInfo HuffmanInfo

◆ HuffTabLookup

typedef struct _HuffTabLookup HuffTabLookup

◆ HuffTabType

typedef enum _HuffTabType HuffTabType

◆ IMDCTInfo

typedef struct _IMDCTInfo IMDCTInfo

◆ ScaleFactorInfo

typedef struct _ScaleFactorInfo ScaleFactorInfo

◆ ScaleFactorInfoSub

typedef struct _ScaleFactorInfoSub ScaleFactorInfoSub

◆ ScaleFactorJS

typedef struct _ScaleFactorJS ScaleFactorJS

◆ SideInfo

typedef struct _SideInfo SideInfo

◆ SideInfoSub

typedef struct _SideInfoSub SideInfoSub

◆ SubbandInfo

typedef struct _SubbandInfo SubbandInfo

Enumeration Type Documentation

◆ _HuffTabType

enum _HuffTabType

Enumerator
noBits
oneShot
loopNoLinbits
loopLinbits
quadA
quadB
invalidTab

Definition at line 196 of file coder.h.

◆ StereoMode

enum StereoMode

Enumerator
Stereo
Joint
Dual
Mono

Definition at line 121 of file coder.h.

Function Documentation

◆ CalcBitsUsed()

int CalcBitsUsed	(	BitStreamInfo *	bsi,
		unsigned char *	startBuf,
		int	startOffset )

Definition at line 165 of file bitstream.c.

◆ DequantChannel()

int DequantChannel	(	int *	sampleBuf,
		int *	workBuf,
		int *	nonZeroBound,
		FrameHeader *	fh,
		SideInfoSub *	sis,
		ScaleFactorInfoSub *	sfis,
		CriticalBandInfo *	cbi )

Definition at line 244 of file dqchan.c.

◆ FDCT32()

void FDCT32	(	int *	x,
		int *	d,
		int	offset,
		int	oddBlock,
		int	gb )

Definition at line 144 of file dct32.c.

◆ GetBits()

unsigned int GetBits	(	BitStreamInfo *	bsi,
		int	nBits )

Definition at line 129 of file bitstream.c.

◆ IntensityProcMPEG1()

void IntensityProcMPEG1	(	int	x[MAX_NCHAN][MAX_NSAMP],
		int	nSamps,
		FrameHeader *	fh,
		ScaleFactorInfoSub *	sfis,
		CriticalBandInfo *	cbi,
		int	midSideFlag,
		int	mixFlag,
		int	mOut[2] )

Definition at line 106 of file stproc.c.

◆ IntensityProcMPEG2()

void IntensityProcMPEG2	(	int	x[MAX_NCHAN][MAX_NSAMP],
		int	nSamps,
		FrameHeader *	fh,
		ScaleFactorInfoSub *	sfis,
		CriticalBandInfo *	cbi,
		ScaleFactorJS *	sfjs,
		int	midSideFlag,
		int	mixFlag,
		int	mOut[2] )

Definition at line 212 of file stproc.c.

◆ MidSideProc()

void MidSideProc	(	int	x[MAX_NCHAN][MAX_NSAMP],
		int	nSamps,
		int	mOut[2] )

Definition at line 64 of file stproc.c.

◆ PolyphaseMono()

void PolyphaseMono	(	short *	pcm,
		int *	vbuf,
		const int *	coefBase )

Definition at line 112 of file polyphase.c.

◆ PolyphaseStereo()

void PolyphaseStereo	(	short *	pcm,
		int *	vbuf,
		const int *	coefBase )

Definition at line 225 of file polyphase.c.

◆ SetBitstreamPointer()

void SetBitstreamPointer	(	BitStreamInfo *	bsi,
		int	nBytes,
		unsigned char *	buf )

Definition at line 60 of file bitstream.c.

Variable Documentation

◆ coef32

const int coef32[31]

extern

Definition at line 248 of file trigtabs.c.

◆ csa

const int csa[8][2]

extern

Definition at line 225 of file trigtabs.c.

◆ huffTable

const unsigned short huffTable[]

extern

Definition at line 77 of file hufftabs.c.

◆ huffTabLookup

const HuffTabLookup huffTabLookup[HUFF_PAIRTABS]

extern

Definition at line 699 of file hufftabs.c.

◆ huffTabOffset

const int huffTabOffset[HUFF_PAIRTABS]

extern

Definition at line 664 of file hufftabs.c.

◆ imdctWin

const int imdctWin[4][36]

extern

Definition at line 103 of file trigtabs.c.

◆ ISFIIP

const int ISFIIP[2][2]

extern

Definition at line 214 of file trigtabs.c.

◆ ISFMpeg1

const int ISFMpeg1[2][7]

extern

Definition at line 160 of file trigtabs.c.

◆ ISFMpeg2

const int ISFMpeg2[2][2][16]

extern

Definition at line 182 of file trigtabs.c.

◆ polyCoef

const int polyCoef[264]

extern

Definition at line 278 of file trigtabs.c.

◆ quadTable

const unsigned char quadTable[64+16]

extern

Definition at line 739 of file hufftabs.c.

◆ quadTabMaxBits

const int quadTabMaxBits[2]

extern

Definition at line 755 of file hufftabs.c.

◆ quadTabOffset

const int quadTabOffset[2]

extern

Definition at line 754 of file hufftabs.c.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ ASSERT

◆ BLOCK_SIZE

◆ CalcBitsUsed

◆ CLIP_2N

◆ coef32

◆ csa

◆ DequantChannel

◆ DQ_FRACBITS_OUT

◆ FDCT32

◆ GetBits

◆ HUFF_PAIRTABS

◆ huffTable

◆ huffTabLookup

◆ huffTabOffset

◆ IMDCT_SCALE

◆ imdctWin

◆ IntensityProcMPEG1

◆ IntensityProcMPEG2

◆ ISFIIP

◆ ISFMpeg1

◆ ISFMpeg2

◆ MAX

◆ MAX_REORDER_SAMPS

◆ MidSideProc

◆ MIN

◆ NBANDS

◆ polyCoef

◆ PolyphaseMono

◆ PolyphaseStereo

◆ POW43_FRACBITS_HIGH

◆ POW43_FRACBITS_LOW

◆ quadTable

◆ quadTabMaxBits

◆ quadTabOffset

◆ SetBitstreamPointer

◆ SIBYTES_MPEG1_MONO

◆ SIBYTES_MPEG1_STEREO

◆ SIBYTES_MPEG2_MONO

◆ SIBYTES_MPEG2_STEREO

◆ uniqueIDTab

◆ VBUF_LENGTH

Typedef Documentation

◆ BitStreamInfo

◆ BlockCount

◆ DequantInfo

◆ FrameHeader

◆ HuffmanInfo

◆ HuffTabLookup

◆ HuffTabType

◆ IMDCTInfo

◆ ScaleFactorInfo

◆ ScaleFactorInfoSub

◆ ScaleFactorJS

◆ SideInfo

◆ SideInfoSub

◆ SubbandInfo

Enumeration Type Documentation

◆ _HuffTabType

◆ StereoMode

Function Documentation

◆ CalcBitsUsed()

◆ DequantChannel()

◆ FDCT32()

◆ GetBits()

◆ IntensityProcMPEG1()

◆ IntensityProcMPEG2()

◆ MidSideProc()

◆ PolyphaseMono()

◆ PolyphaseStereo()

◆ SetBitstreamPointer()

Variable Documentation

◆ coef32

◆ csa