--- zigzag.h 2002/03/08 02:44:38 1.1 +++ zigzag.h 2002/11/26 23:44:10 1.5 @@ -1,40 +1,92 @@ +/***************************************************************************** + * + * XVID MPEG-4 VIDEO CODEC + * - zigzag dct block scanning - + * + * Copyright(C) 2001-2002 Michael Militzer + * + * This file is part of XviD, a free MPEG-4 video encoder/decoder + * + * XviD is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Under section 8 of the GNU General Public License, the copyright + * holders of XVID explicitly forbid distribution in the following + * countries: + * + * - Japan + * - United States of America + * + * Linking XviD statically or dynamically with other modules is making a + * combined work based on XviD. Thus, the terms and conditions of the + * GNU General Public License cover the whole combination. + * + * As a special exception, the copyright holders of XviD give you + * permission to link XviD with independent modules that communicate with + * XviD solely through the VFW1.1 and DShow interfaces, regardless of the + * license terms of these independent modules, and to copy and distribute + * the resulting combined work under terms of your choice, provided that + * every copy of the combined work is accompanied by a complete copy of + * the source code of XviD (the version of XviD used to produce the + * combined work), being distributed under the terms of the GNU General + * Public License plus this exception. An independent module is a module + * which is not derived from or based on XviD. + * + * Note that people who make modified versions of XviD are not obligated + * to grant this special exception for their modified versions; it is + * their choice whether to do so. The GNU General Public License gives + * permission to release a modified version without this exception; this + * exception also makes it possible to release a modified version which + * carries forward this exception. + * + * $Id: zigzag.h,v 1.5 2002/11/26 23:44:10 edgomez Exp $ + * + ****************************************************************************/ + #ifndef _ZIGZAG_H_ #define _ZIGZAG_H_ -static const uint16_t scan_tables[3][64] = -{ - { // zig_zag_scan - 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 - }, +static const uint16_t scan_tables[3][64] = { + { /* zig_zag_scan */ + 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}, - { // horizontal_scan - 0, 1, 2, 3, 8, 9, 16, 17, - 10, 11, 4, 5, 6, 7, 15, 14, - 13, 12, 19, 18, 24, 25, 32, 33, - 26, 27, 20, 21, 22, 23, 28, 29, - 30, 31, 34, 35, 40, 41, 48, 49, - 42, 43, 36, 37, 38, 39, 44, 45, - 46, 47, 50, 51, 56, 57, 58, 59, - 52, 53, 54, 55, 60, 61, 62, 63 - }, + { /* horizontal_scan */ + 0, 1, 2, 3, 8, 9, 16, 17, + 10, 11, 4, 5, 6, 7, 15, 14, + 13, 12, 19, 18, 24, 25, 32, 33, + 26, 27, 20, 21, 22, 23, 28, 29, + 30, 31, 34, 35, 40, 41, 48, 49, + 42, 43, 36, 37, 38, 39, 44, 45, + 46, 47, 50, 51, 56, 57, 58, 59, + 52, 53, 54, 55, 60, 61, 62, 63}, - { // vertical_scan - 0, 8, 16, 24, 1, 9, 2, 10, - 17, 25, 32, 40, 48, 56, 57, 49, - 41, 33, 26, 18, 3, 11, 4, 12, - 19, 27, 34, 42, 50, 58, 35, 43, - 51, 59, 20, 28, 5, 13, 6, 14, - 21, 29, 36, 44, 52, 60, 37, 45, - 53, 61, 22, 30, 7, 15, 23, 31, - 38, 46, 54, 62, 39, 47, 55, 63 - } + { /* vertical_scan */ + 0, 8, 16, 24, 1, 9, 2, 10, + 17, 25, 32, 40, 48, 56, 57, 49, + 41, 33, 26, 18, 3, 11, 4, 12, + 19, 27, 34, 42, 50, 58, 35, 43, + 51, 59, 20, 28, 5, 13, 6, 14, + 21, 29, 36, 44, 52, 60, 37, 45, + 53, 61, 22, 30, 7, 15, 23, 31, + 38, 46, 54, 62, 39, 47, 55, 63} }; -#endif /* _ZIGZAG_H_ */ +#endif /* _ZIGZAG_H_ */