common.h

这是一组DCT和iDCT的代码

#ifndef PI
# ifdef M_PI
#  define PI M_PI
# else
#  define PI 3.14159265358979323846
# endif
#endif

extern void Init();
extern void Standard_fDCT(unsigned char *pIn, double *pOut);
extern double CompareDCT(double *pIn, double *tmpl);

extern const double aansf[8];
extern double aanscales[64];
extern void Init_AanScales();
extern void BBmpeg_AAN_fDct(unsigned char *pIn, double *pOut);
extern void BBmpeg_LLM_fDct(unsigned char *pIn, double *pOut);

void fdct_am32( short *blk );
void fdct_mm32( short *blk );

void init_fdct_3dnow();
void fdct_3dnow(short *block);

extern "C" void fdct_mmx(short *block);
extern "C" void fdct_sse2(short *block);

void init_idct_int32();
void idct_int32(short *block);

void idct_chen(short int *x);

void idct_aan(short *src_result);

void idct_ap922float_sse(short *data);

void idct_ap922float_x87(short *data);

void idct_ap922hybr_x87(short *data);

extern "C" void idct_mmx (short * const src_result);
extern "C" void idct_xmm (short * const src_result);
extern "C" void idct_sse2 (short * const src_result);

extern "C" void __fastcall idct8x8_sse (short *src_result);

void sub_pred_mmx(unsigned char *pred, unsigned char *cur, int lx, short *blk);
void add_pred_mmx(unsigned char *pred, unsigned char *cur, int lx, short *blk);
void sub_pred_sse2(unsigned char *pred, unsigned char *cur, int lx, short *blk);