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Annotation of /trunk/xvidcore/src/bitstream/zigzag.h

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1 : edgomez 1382 /*****************************************************************************
2 :     *
3 :     * XVID MPEG-4 VIDEO CODEC
4 :     * - ZigZag order matrices -
5 :     *
6 :     * Copyright(C) 2001-2002 Michael Militzer <isibaar@xvid.org>
7 :     *
8 :     * This program is free software ; you can redistribute it and/or modify
9 :     * it under the terms of the GNU General Public License as published by
10 :     * the Free Software Foundation ; either version 2 of the License, or
11 :     * (at your option) any later version.
12 :     *
13 :     * This program is distributed in the hope that it will be useful,
14 :     * but WITHOUT ANY WARRANTY ; without even the implied warranty of
15 :     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 :     * GNU General Public License for more details.
17 :     *
18 :     * You should have received a copy of the GNU General Public License
19 :     * along with this program ; if not, write to the Free Software
20 :     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 :     *
22 : Isibaar 1988 * $Id$
23 : edgomez 1382 *
24 :     ****************************************************************************/
25 :    
26 : Isibaar 3 #ifndef _ZIGZAG_H_
27 :     #define _ZIGZAG_H_
28 :    
29 : edgomez 195 static const uint16_t scan_tables[3][64] = {
30 : edgomez 1382 /* zig_zag_scan */
31 :     { 0, 1, 8, 16, 9, 2, 3, 10,
32 :     17, 24, 32, 25, 18, 11, 4, 5,
33 : edgomez 195 12, 19, 26, 33, 40, 48, 41, 34,
34 : edgomez 1382 27, 20, 13, 6, 7, 14, 21, 28,
35 : edgomez 195 35, 42, 49, 56, 57, 50, 43, 36,
36 :     29, 22, 15, 23, 30, 37, 44, 51,
37 :     58, 59, 52, 45, 38, 31, 39, 46,
38 :     53, 60, 61, 54, 47, 55, 62, 63},
39 : Isibaar 3
40 : edgomez 1382 /* horizontal_scan */
41 :     { 0, 1, 2, 3, 8, 9, 16, 17,
42 :     10, 11, 4, 5, 6, 7, 15, 14,
43 : edgomez 195 13, 12, 19, 18, 24, 25, 32, 33,
44 :     26, 27, 20, 21, 22, 23, 28, 29,
45 :     30, 31, 34, 35, 40, 41, 48, 49,
46 :     42, 43, 36, 37, 38, 39, 44, 45,
47 :     46, 47, 50, 51, 56, 57, 58, 59,
48 :     52, 53, 54, 55, 60, 61, 62, 63},
49 : Isibaar 3
50 : edgomez 1382 /* vertical_scan */
51 :     { 0, 8, 16, 24, 1, 9, 2, 10,
52 : edgomez 195 17, 25, 32, 40, 48, 56, 57, 49,
53 : edgomez 1382 41, 33, 26, 18, 3, 11, 4, 12,
54 : edgomez 195 19, 27, 34, 42, 50, 58, 35, 43,
55 : edgomez 1382 51, 59, 20, 28, 5, 13, 6, 14,
56 : edgomez 195 21, 29, 36, 44, 52, 60, 37, 45,
57 : edgomez 1382 53, 61, 22, 30, 7, 15, 23, 31,
58 : edgomez 195 38, 46, 54, 62, 39, 47, 55, 63}
59 : Isibaar 3 };
60 :    
61 : edgomez 195 #endif /* _ZIGZAG_H_ */

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