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revision 1.1, Fri Mar 8 02:44:38 2002 UTC revision 1.6.2.1, Mon Jun 9 01:18:23 2003 UTC
# Line 1  Line 1 
1  #ifndef _ZIGZAG_H_  #ifndef _ZIGZAG_H_
2  #define _ZIGZAG_H_  #define _ZIGZAG_H_
3    
4  static const uint16_t scan_tables[3][64] =  static const uint16_t scan_tables[3][64] = {
5  {          /* zig_zag_scan */
6          {       // zig_zag_scan          { 0,  1,  8, 16,  9,  2,  3, 10,
             0,  1,      8,      16, 9,  2,      3,      10,  
7                  17, 24, 32, 25, 18, 11, 4,      5,                  17, 24, 32, 25, 18, 11, 4,      5,
8                  12, 19, 26, 33, 40, 48, 41, 34,                  12, 19, 26, 33, 40, 48, 41, 34,
9                  27, 20, 13, 6,  7,      14, 21, 28,                  27, 20, 13, 6,  7,      14, 21, 28,
10                  35, 42, 49, 56, 57, 50, 43, 36,                  35, 42, 49, 56, 57, 50, 43, 36,
11                  29, 22, 15, 23, 30, 37, 44, 51,                  29, 22, 15, 23, 30, 37, 44, 51,
12                  58, 59, 52, 45, 38, 31, 39, 46,                  58, 59, 52, 45, 38, 31, 39, 46,
13                  53, 60, 61, 54, 47, 55, 62, 63           53, 60, 61, 54, 47, 55, 62, 63},
         },  
14    
15          {       // horizontal_scan          /* horizontal_scan */
16              0,  1,      2,      3,      8,      9,      16, 17,          { 0,  1,  2,  3,  8,  9, 16, 17,
17              10, 11,     4,      5,      6,      7,      15, 14,              10, 11,     4,      5,      6,      7,      15, 14,
18              13, 12, 19, 18, 24, 25, 32, 33,              13, 12, 19, 18, 24, 25, 32, 33,
19              26, 27, 20, 21, 22, 23, 28, 29,              26, 27, 20, 21, 22, 23, 28, 29,
20              30, 31, 34, 35, 40, 41, 48, 49,              30, 31, 34, 35, 40, 41, 48, 49,
21              42, 43, 36, 37, 38, 39, 44, 45,              42, 43, 36, 37, 38, 39, 44, 45,
22              46, 47, 50, 51, 56, 57, 58, 59,              46, 47, 50, 51, 56, 57, 58, 59,
23              52, 53, 54, 55, 60, 61, 62, 63           52, 53, 54, 55, 60, 61, 62, 63},
         },  
24    
25          {       // vertical_scan          /* vertical_scan */
26              0, 8, 16, 24, 1, 9, 2, 10,          { 0,  8, 16, 24,  1,  9,  2, 10,
27              17, 25, 32, 40, 48, 56, 57, 49,              17, 25, 32, 40, 48, 56, 57, 49,
28              41, 33, 26, 18, 3, 11, 4, 12,              41, 33, 26, 18, 3, 11, 4, 12,
29              19, 27, 34, 42, 50, 58, 35, 43,              19, 27, 34, 42, 50, 58, 35, 43,
30              51, 59, 20, 28, 5, 13, 6, 14,              51, 59, 20, 28, 5, 13, 6, 14,
31              21, 29, 36, 44, 52, 60, 37, 45,              21, 29, 36, 44, 52, 60, 37, 45,
32              53, 61, 22, 30, 7, 15, 23, 31,              53, 61, 22, 30, 7, 15, 23, 31,
33              38, 46, 54, 62, 39, 47, 55, 63           38, 46, 54, 62, 39, 47, 55, 63}
         }  
34  };  };
35    
36  #endif /* _ZIGZAG_H_ */  #endif /* _ZIGZAG_H_ */
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