www.pudn.com > EZW_.rar > WAVELET.H

#ifndef __WAVELET_H_ 
#define __WAVELET_H_ 
 
/*---------------------------------------------------------------------------*/ 
/*---------------------------------------------------------------------------*/ 
/* Port to C from C++ 
 * 
 * Mow-Song, Ng 2/9/2002 
 * msng@mmu.edu.my 
 * http://www.pesona.mmu.edu.my/~msng 
 * 
 * I do not claim copyright to the code, but if you use them or modify them, 
 * please drop me a mail. 
 * 
 */ 
/*---------------------------------------------------------------------------*/ 
/*---------------------------------------------------------------------------*/ 
 
/*---------------------------------------------------------------------------*/ 
/*---------------------------------------------------------------------------*/ 
/* Original copyright info */ 
/*---------------------------------------------------------------------------*/ 
// Baseline Wavelet Transform Coder Construction Kit 
// 
// Geoff Davis 
// gdavis@cs.dartmouth.edu 
// http://www.cs.dartmouth.edu/~gdavis 
// 
// Copyright 1996 Geoff Davis 9/11/96 
// 
// Permission is granted to use this software for research purposes as 
// long as this notice stays attached to this software. 
// 
/*---------------------------------------------------------------------------*/ 
 
#include  
#include  
 
#include "global.h" 
#include "filter.h" 
#include "memchk.h" 
 
typedef struct WaveletStruct { 
   FILTER *analysisLow, *analysisHigh;    // H and G 
   FILTER *synthesisLow, *synthesisHigh;  // H~ and G~ 
   int symmetric;  // TRUE if filter set is symmetric 
   int npad; 
} WAVELET; 
 
 
WAVELET *WaveletAlloc(FILTERSET *filterset); 
void WaveletDealloc(WAVELET *wavelet); 
void WaveletTransform1D(WAVELET *wavelet, Real *input, Real *output, int size, 
								int nsteps, int symExt); 
void WaveletInvert1D(WAVELET *wavelet, Real *input, Real *output, int size, 
										 int nsteps, int symExt); 
void WaveletTransform2D(WAVELET *wavelet, Real *input, Real *output, int hsize, int vsize, 
								int nsteps, int symExt); 
void WaveletInvert2D(WAVELET *wavelet, Real *input, Real *output, int hsize, int vsize, 
								int nsteps, int symExt); 
void WaveletSymmetricExtension(WAVELET *wavelet, Real *output, int size, int leftExt, int 
			    rightExt, int symmetry); 
void WaveletPeriodicExtension(WAVELET *wavelet, Real *output, int size); 
void WaveletTransformStep (WAVELET *wavelet, Real *input, Real *output, int size, int symExt); 
void WaveletInvertStep (WAVELET *wavelet, Real *input, Real *output, int size, int symExt); 
void copy (const Real *p1, Real *p2, const int length); 
void copy_p1_skip (const Real *p1, const int stride1, Real *p2, const int length); 
void copy_p2_skip (const Real *p1, Real *p2, const int stride2, const int length); 
void WaveletError(char *fmt, ...); 
void WaveletWarning(char *fmt, ...); 
 
extern FILTERSET *Haar, *Daub4, *Daub6, *Daub8, *Antonini,  
			 *Villa1810, *Adelson, *Brislawn, *Brislawn2,  
			 *Villa1, *Villa2, *Villa3, *Villa4, *Villa5,  
			 *Villa6, *Odegard; 
 
#endif