zerotree.h

wavlet compression on c++ only cods

// Copyright (c) 1999 Stephen T. Welstead. All rights reserved.
// File zerotree.h Header for zerotree class

#ifndef ZEROTREE_H
#define ZEROTREE_H

#include "utshort.h"

#define POS 1
#define NEG 2
#define IZ  3
#define ZR  4
#define ZT  5

#define NO_OF_SYMBOLS 5
#define NO_OF_BIT_SYMBOLS 4

#define BIT_POS 1
#define BIT_NEG 2
#define BIT_IZ  3
#define BIT_ZR  0

typedef struct {
   unsigned sym_1:2,
	    sym_2:2,
	    sym_3:2,
	    sym_4:2;
   } tsymbol_bit_array;

class tzerotree: public tshort_array {
   public:
   tzerotree (int rows,int cols):tshort_array(rows,cols) {};
   tzerotree (int rows,int cols,short init_value):
		    tshort_array(rows,cols,init_value){};
   virtual void mark_parents (int row,int col,short symbol);
   virtual void mark_children (int row,int col,int nrows,
	int ncols,short symbol);
   };

#endif