www.pudn.com > ezw_davis.rar > ezw.h

/* 
EZW.H 
 
This file is part of my Embedded Zerotree Wavelet Encoder Tutorial. 
 
C. Valens 
 
Created    : 07/09/1999 
Last update: 07/09/1999 
*/ 
 
 
#ifndef __EZW_H__ 
#define __EZW_H__ 
 
 
#include "matrix2d.h" 
 
 
typedef struct __ezw_file_header { 
  int height; 
  int width; 
  element_type threshold; 
} ezw_file_header; 
 
 
/* 
 * Shapiro's example data 
 */ 
const int example[8][8] = { 
  { 63,-34, 49, 10,  7, 13,-12,  7 }, 
  {-31, 23, 14,-13,  3,  4,  6, -1 }, 
  { 15, 14,  3,-12,  5, -7,  3,  9 }, 
  { -9, -7,-14,  8,  4, -2,  3,  2 }, 
  { -5,  9, -1, 47,  4,  6, -2,  2 }, 
  {  3,  0, -3,  2,  3, -2,  0,  4 }, 
  {  2, -3,  6, -4,  3,  6,  3,  6 }, 
  {  5, 11,  5,  6,  0,  3, -4,  4 } 
}; 
 
 
/* 
 * Code alphabet. 
 */ 
#define ZERO  0 /* binary 0 */ 
#define ONE   1 /* binary 1 */ 
#define ZTR   2 /* binary 00 */ 
#define POS   3 /* binary 01 */ 
#define NEG   4 /* binary 11 */ 
#define IZ    5 /* binary 10 */ 
 
 
#endif /* __EZW_H__ */