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revision 195, Wed Jun 12 20:38:41 2002 UTC revision 457, Sun Sep 8 17:28:22 2002 UTC
# Line 1  Line 1 
1    /*****************************************************************************
2     *
3     *  XVID MPEG-4 VIDEO CODEC
4     *  - Custom matrix quantization functions -
5     *
6     *  Copyright(C) 2002 Michael Militzer
7     *
8     *  This program is an implementation of a part of one or more MPEG-4
9     *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
10     *  to use this software module in hardware or software products are
11     *  advised that its use may infringe existing patents or copyrights, and
12     *  any such use would be at such party's own risk.  The original
13     *  developer of this software module and his/her company, and subsequent
14     *  editors and their companies, will have no liability for use of this
15     *  software or modifications or derivatives thereof.
16     *
17     *  This program is free software ; you can redistribute it and/or modify
18     *  it under the terms of the GNU General Public License as published by
19     *  the Free Software Foundation ; either version 2 of the License, or
20     *  (at your option) any later version.
21     *
22     *  This program is distributed in the hope that it will be useful,
23     *  but WITHOUT ANY WARRANTY ; without even the implied warranty of
24     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25     *  GNU General Public License for more details.
26     *
27     *  You should have received a copy of the GNU General Public License
28     *  along with this program ; if not, write to the Free Software
29     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
30     *
31     *  $Id: quant_matrix.c,v 1.8 2002-09-08 17:28:22 edgomez Exp $
32     *
33     ****************************************************************************/
34    
35  #include "quant_matrix.h"  #include "quant_matrix.h"
36    
37  #define FIX(X) (1 << 16) / (X) + 1  #define FIX(X) (1 << 16) / (X) + 1
38    
39    /*****************************************************************************
40     * Local data
41     ****************************************************************************/
42    
43    /* ToDo : remove all this local to make this module thread safe */
44  uint8_t custom_intra_matrix = 0;  uint8_t custom_intra_matrix = 0;
45  uint8_t custom_inter_matrix = 0;  uint8_t custom_inter_matrix = 0;
46    
# Line 71  Line 110 
110          FIX(23), FIX(24), FIX(25), FIX(27), FIX(28), FIX(30), FIX(31), FIX(33)          FIX(23), FIX(24), FIX(25), FIX(27), FIX(28), FIX(30), FIX(31), FIX(33)
111  };  };
112    
113    /*****************************************************************************
114     * Functions
115     ****************************************************************************/
116    
117  uint8_t  uint8_t
118  get_intra_matrix_status(void)  get_intra_matrix_status(void)
119  {  {
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