filter2d.h

LastWave

/*..........................................................................*/
/*                                                                          */
/*      L a s t W a v e    P a c k a g e 'dwtrans2d' 2.1                    */
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/*      Copyright (C) 1998-2002  E.Bacry, J.Fraleu, J.Kalifa, E. Le Pennec, */
/*                         W.L. Hwang , S.Mallat, S.Zhong                   */
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#ifndef FILTER2D_H

#define FILTER2D_H

/********************************************************************/
/***************************** FILTERS ******************************/
/********************************************************************/


#define W2_FILT_SIZE 128 /* max size of a filter */

typedef struct filter2 {    
  int size;
  int shift;		/* shift half grid point to left: 1; to right: -1. */
  LWFLOAT symmetry;	/* symmetry: 1.0; antisymmetry: -1.0. */
  LWFLOAT values[W2_FILT_SIZE];
  char * name;
  LWFLOAT factors[W2_NFACT];
} Filter2, *FILTER2;


/***********************************************************/
/*******************    filter       ***********************/
/***********************************************************/

/*filter_alloc2d.c */
extern FILTER2 NewFilter2(void);
extern void DeleteFilter2(FILTER2 filter);
extern void ClearFilter2(FILTER2 filter);
extern void SetDefaultFilter2Name(char *str);  
extern char  *GetDefaultFilter2Name(void);  
extern void InitDFilter2(void);

#endif