www.pudn.com > encore50src.zip > zigzag.h

 
#ifndef _ZIGZAG_H_ 
#define _ZIGZAG_H_ 
 
 
/* Normal zigzag */ 
static Int zigzag[64] = { 
  0, 1, 5, 6,14,15,27,28, 
  2, 4, 7,13,16,26,29,42, 
  3, 8,12,17,25,30,41,43, 
  9,11,18,24,31,40,44,53, 
  10,19,23,32,39,45,52,54, 
  20,22,33,38,46,51,55,60, 
  21,34,37,47,50,56,59,61, 
  35,36,48,49,57,58,62,63 
}; 
 
/* Horizontal zigzag */ 
static Int zigzag_h[64] = { 
     0, 1, 2, 3,10,11,12,13, 
     4, 5, 8, 9,17,16,15,14, 
     6, 7,19,18,26,27,28,29, 
    20,21,24,25,30,31,32,33, 
    22,23,34,35,42,43,44,45, 
    36,37,40,41,46,47,48,49, 
    38,39,50,51,56,57,58,59, 
    52,53,54,55,60,61,62,63 
}; 
 
/* Vertical zigzag */ 
static Int zigzag_v[64] = { 
     0, 4, 6,20,22,36,38,52, 
     1, 5, 7,21,23,37,39,53, 
     2, 8,19,24,34,40,50,54, 
     3, 9,18,25,35,41,51,55, 
    10,17,26,30,42,46,56,60, 
    11,16,27,31,43,47,57,61, 
    12,15,28,32,44,48,58,62, 
    13,14,29,33,45,49,59,63 
}; 
 
/* Inverse normal zigzag */ 
static Int zigzag_i[64] = 
{ 
     0, 1, 8,16, 9, 2, 3,10, 
    17,24,32,25,18,11, 4, 5, 
    12,19,26,33,40,48,41,34, 
    27,20,13, 6, 7,14,21,28, 
    35,42,49,56,57,50,43,36, 
    29,22,15,23,30,37,44,51, 
    58,59,52,45,38,31,39,46, 
    53,60,61,54,47,55,62,63 
}; 
 
#endif /* ifndef _ZIGZAG_H_ */