coder.h File Reference

#include "mp3common.h"

Include dependency graph for coder.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
Defines
#define	ASSERT(x)
#define	MAX(a, b)   ((a) > (b) ? (a) : (b))
#define	MIN(a, b)   ((a) < (b) ? (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
#define	IMDCT_SCALE   2
#define	HUFF_PAIRTABS   32
#define	BLOCK_SIZE   18
#define	NBANDS   32
#define	MAX_REORDER_SAMPS   ((192-126)*3)
#define	VBUF_LENGTH   (17 * 2 * NBANDS)
#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]

---

Define Documentation

#define ASSERT

(

x

)

#define MAX	(		a,
			b
	)		((a) > (b) ? (a) : (b))

#define MIN	(		a,
			b
	)		((a) < (b) ? (a) : (b))

Referenced by HttpParseMultipartHeader().

#define CLIP_2N	(		y,
			n
	)

Value:

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

#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

#define IMDCT_SCALE   2

#define HUFF_PAIRTABS   32

#define BLOCK_SIZE   18

#define NBANDS   32

#define MAX_REORDER_SAMPS   ((192-126)*3)

#define VBUF_LENGTH   (17 * 2 * NBANDS)

#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)

---

Typedef Documentation

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

---

Enumeration Type Documentation

enum StereoMode

Enumerator:

Stereo
Joint
Dual
Mono

enum _HuffTabType

Enumerator:

noBits
oneShot
loopNoLinbits
loopLinbits
quadA
quadB
invalidTab

---

Function Documentation

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
	)

---

Variable Documentation

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]