mp3scalfact.c 文件参考

#include "mp3coder.h"

函数
static _XIF_ void	UnpackSFMPEG1 (BitStreamInfo *bsi, SideInfoSub *sis, ScaleFactorInfoSub *sfis, int *scfsi, int gr, ScaleFactorInfoSub *sfisGr0)
static _XIF_ void	UnpackSFMPEG2 (BitStreamInfo *bsi, SideInfoSub *sis, ScaleFactorInfoSub *sfis, int gr, int ch, int modeExt, ScaleFactorJS *sfjs)
_XIF_ int	UnpackScaleFactors (MP3DecInfo *mp3DecInfo, unsigned char *buf, int *bitOffset, int bitsAvail, int gr, int ch)

变量
static _DIF_ const char	SFLenTab [16][2]
static _DIF_ const char	NRTab [6][3][4]

函数说明

UnpackScaleFactors()

_XIF_ int UnpackScaleFactors	(	MP3DecInfo *	mp3DecInfo,
		unsigned char *	buf,
		int *	bitOffset,
		int	bitsAvail,
		int	gr,
		int	ch
	)

UnpackSFMPEG1()

static _XIF_ void UnpackSFMPEG1 ( BitStreamInfo *  bsi, SideInfoSub *  sis, ScaleFactorInfoSub *  sfis, int *  scfsi, int  gr, ScaleFactorInfoSub *  sfisGr0  )

static

UnpackSFMPEG2()

static _XIF_ void UnpackSFMPEG2 ( BitStreamInfo *  bsi, SideInfoSub *  sis, ScaleFactorInfoSub *  sfis, int  gr, int  ch, int  modeExt, ScaleFactorJS *  sfjs  )

static

变量说明

NRTab

_DIF_ const char NRTab[6][3][4]

static

初始值:

= {
    
    {   {6, 5, 5, 5},       
        {3, 3, 3, 3},       
        {6, 3, 3, 3},   
    },
    {   {6, 5, 7, 3}, 
        {3, 3, 4, 2},
        {6, 3, 4, 2},
    },
    {   {11, 10, 0, 0},
        {6, 6, 0, 0},
        {6, 3, 6, 0},  
    },
    
    {   {7, 7, 7, 0},
        {4, 4, 4, 0},
        {6, 5, 4, 0},
    },
    {   {6, 6, 6, 3}, 
        {4, 3, 3, 2},
        {6, 4, 3, 2},
    },
    {   {8, 8, 5, 0},
        {5, 4, 3, 0},
        {6, 6, 3, 0},
    }
}

SFLenTab

_DIF_ const char SFLenTab[16][2]

static

初始值:

= {
    {0, 0},    {0, 1},
    {0, 2},    {0, 3},
    {3, 0},    {1, 1},
    {1, 2},    {1, 3},
    {2, 1},    {2, 2},
    {2, 3},    {3, 1},
    {3, 2},    {3, 3},
    {4, 2},    {4, 3},
}