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revision 1.4, Sun Mar 10 00:30:55 2002 UTC revision 1.14, Mon Mar 22 22:36:24 2004 UTC
# Line 1  Line 1 
1    /*****************************************************************************
2     *
3     *  XVID MPEG-4 VIDEO CODEC
4     *  - Quantization matrix management code  -
5     *
6     *  Copyright(C) 2002 Michael Militzer <isibaar@xvid.org>
7     *               2002 Peter Ross <pross@xvid.org>
8     *
9     *  This program is free software ; you can redistribute it and/or modify
10     *  it under the terms of the GNU General Public License as published by
11     *  the Free Software Foundation ; either version 2 of the License, or
12     *  (at your option) any later version.
13     *
14     *  This program is distributed in the hope that it will be useful,
15     *  but WITHOUT ANY WARRANTY ; without even the implied warranty of
16     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17     *  GNU General Public License for more details.
18     *
19     *  You should have received a copy of the GNU General Public License
20     *  along with this program ; if not, write to the Free Software
21     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22     *
23     * $Id$
24     *
25     ****************************************************************************/
26    
27  #include "quant_matrix.h"  #include "quant_matrix.h"
28    
29  #define FIX(X) (1 << 16) / (X) + 1  #define FIX(X)   (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1))
30    #define FIXL(X)    ((1UL << 16) / (X) - 1)
31    
32  uint8_t custom_intra_matrix = 0;  /*****************************************************************************
33  uint8_t custom_inter_matrix = 0;   * Default matrices
34     ****************************************************************************/
35    
36  uint8_t default_intra_matrix[64] = {  static const uint8_t default_intra_matrix[64] = {
37       8,17,18,19,21,23,25,27,       8,17,18,19,21,23,25,27,
38      17,18,19,21,23,25,27,28,      17,18,19,21,23,25,27,28,
39      20,21,22,23,24,26,28,30,      20,21,22,23,24,26,28,30,
# Line 16  Line 44 
44      27,28,30,32,35,38,41,45      27,28,30,32,35,38,41,45
45  };  };
46    
47  int16_t intra_matrix[64] = {  static const uint8_t default_inter_matrix[64] = {
      8,17,18,19,21,23,25,27,  
     17,18,19,21,23,25,27,28,  
     20,21,22,23,24,26,28,30,  
     21,22,23,24,26,28,30,32,  
     22,23,24,26,28,30,32,35,  
     23,24,26,28,30,32,35,38,  
     25,26,28,30,32,35,38,41,  
     27,28,30,32,35,38,41,45  
 };  
   
 int16_t intra_matrix_fix[64] = {  
      FIX(8),FIX(17),FIX(18),FIX(19),FIX(21),FIX(23),FIX(25),FIX(27),  
     FIX(17),FIX(18),FIX(19),FIX(21),FIX(23),FIX(25),FIX(27),FIX(28),  
     FIX(20),FIX(21),FIX(22),FIX(23),FIX(24),FIX(26),FIX(28),FIX(30),  
     FIX(21),FIX(22),FIX(23),FIX(24),FIX(26),FIX(28),FIX(30),FIX(32),  
     FIX(22),FIX(23),FIX(24),FIX(26),FIX(28),FIX(30),FIX(32),FIX(35),  
     FIX(23),FIX(24),FIX(26),FIX(28),FIX(30),FIX(32),FIX(35),FIX(38),  
     FIX(25),FIX(26),FIX(28),FIX(30),FIX(32),FIX(35),FIX(38),FIX(41),  
     FIX(27),FIX(28),FIX(30),FIX(32),FIX(35),FIX(38),FIX(41),FIX(45)  
 };  
   
 uint8_t default_inter_matrix[64] = {  
48      16,17,18,19,20,21,22,23,      16,17,18,19,20,21,22,23,
49      17,18,19,20,21,22,23,24,      17,18,19,20,21,22,23,24,
50      18,19,20,21,22,23,24,25,      18,19,20,21,22,23,24,25,
# Line 49  Line 55 
55      23,24,25,27,28,30,31,33      23,24,25,27,28,30,31,33
56  };  };
57    
58  int16_t inter_matrix[64] = {  const uint16_t *
59      16,17,18,19,20,21,22,23,  get_intra_matrix(const uint16_t * mpeg_quant_matrices)
60      17,18,19,20,21,22,23,24,  {
61      18,19,20,21,22,23,24,25,          return(mpeg_quant_matrices + 0*64);
     19,20,21,22,23,24,26,27,  
     20,21,22,23,25,26,27,28,  
     21,22,23,24,26,27,28,30,  
     22,23,24,26,27,28,30,31,  
     23,24,25,27,28,30,31,33  
 };  
   
 int16_t inter_matrix_fix[64] = {  
     FIX(16),FIX(17),FIX(18),FIX(19),FIX(20),FIX(21),FIX(22),FIX(23),  
     FIX(17),FIX(18),FIX(19),FIX(20),FIX(21),FIX(22),FIX(23),FIX(24),  
     FIX(18),FIX(19),FIX(20),FIX(21),FIX(22),FIX(23),FIX(24),FIX(25),  
     FIX(19),FIX(20),FIX(21),FIX(22),FIX(23),FIX(24),FIX(26),FIX(27),  
     FIX(20),FIX(21),FIX(22),FIX(23),FIX(25),FIX(26),FIX(27),FIX(28),  
     FIX(21),FIX(22),FIX(23),FIX(24),FIX(26),FIX(27),FIX(28),FIX(30),  
     FIX(22),FIX(23),FIX(24),FIX(26),FIX(27),FIX(28),FIX(30),FIX(31),  
     FIX(23),FIX(24),FIX(25),FIX(27),FIX(28),FIX(30),FIX(31),FIX(33)  
 };  
   
 uint8_t get_intra_matrix_status(void) {  
         return custom_intra_matrix;  
62  }  }
63    
64  uint8_t get_inter_matrix_status(void) {  const uint16_t *
65          return custom_inter_matrix;  get_inter_matrix(const uint16_t * mpeg_quant_matrices)
66    {
67            return(mpeg_quant_matrices + 4*64);
68  }  }
69    
70  void set_intra_matrix_status(uint8_t status) {  const uint8_t *
71          custom_intra_matrix = status;  get_default_intra_matrix(void)
72    {
73            return default_intra_matrix;
74  }  }
75    
76  void set_inter_matrix_status(uint8_t status) {  const uint8_t *
77          custom_inter_matrix = status;  get_default_inter_matrix(void)
78    {
79            return default_inter_matrix;
80  }  }
81    
82  int16_t *get_intra_matrix(void) {  int
83          return intra_matrix;  is_custom_intra_matrix(const uint16_t * mpeg_quant_matrices)
84  }  {
85            int i;
86            const uint16_t *intra_matrix = get_intra_matrix(mpeg_quant_matrices);
87            const uint8_t *def_intra_matrix = get_default_intra_matrix();
88    
89  int16_t *get_inter_matrix(void) {          for (i = 0; i < 64; i++) {
90          return inter_matrix;                  if(intra_matrix[i] != def_intra_matrix[i])
91                            return 1;
92  }  }
93            return 0;
 uint8_t *get_default_intra_matrix(void) {  
         return default_intra_matrix;  
94  }  }
95    
96  uint8_t *get_default_inter_matrix(void) {  int
97          return default_inter_matrix;  is_custom_inter_matrix(const uint16_t * mpeg_quant_matrices)
98    {
99            int i;
100            const uint16_t *inter_matrix = get_inter_matrix(mpeg_quant_matrices);
101            const uint8_t *def_inter_matrix = get_default_inter_matrix();
102    
103            for (i = 0; i < 64; i++) {
104                    if(inter_matrix[i] != (uint16_t)def_inter_matrix[i])
105                            return 1;
106            }
107            return 0;
108  }  }
109    
110  uint8_t set_intra_matrix(uint8_t *matrix)  void
111    set_intra_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix)
112  {  {
113          int i, change = 0;          int i;
114            uint16_t *intra_matrix = mpeg_quant_matrices + 0*64;
115          custom_intra_matrix = 0;          uint16_t *intra_matrix1 = mpeg_quant_matrices + 1*64;
116            uint16_t *intra_matrix_fix = mpeg_quant_matrices + 2*64;
117            uint16_t *intra_matrix_fixl = mpeg_quant_matrices + 3*64;
118    
119          for(i = 0; i < 64; i++) {          for(i = 0; i < 64; i++) {
120                  if((int16_t) default_intra_matrix[i] != matrix[i])                  intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i];
121                          custom_intra_matrix = 1;                  intra_matrix1[i] = (intra_matrix[i]>>1);
122                  if(intra_matrix[i] != matrix[i])                  intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0);
                         change = 1;  
   
                 intra_matrix[i] = (int16_t) matrix[i];  
123                  intra_matrix_fix[i] = FIX(intra_matrix[i]);                  intra_matrix_fix[i] = FIX(intra_matrix[i]);
124                    intra_matrix_fixl[i] = FIXL(intra_matrix[i]);
125          }          }
         return custom_intra_matrix | change;  
126  }  }
127    
128    void
129  uint8_t set_inter_matrix(uint8_t *matrix)  set_inter_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix)
130  {  {
131          int i, change = 0;          int i;
132            uint16_t *inter_matrix = mpeg_quant_matrices + 4*64;
133          custom_inter_matrix = 0;          uint16_t *inter_matrix1 = mpeg_quant_matrices + 5*64;
134            uint16_t *inter_matrix_fix = mpeg_quant_matrices + 6*64;
135            uint16_t *inter_matrix_fixl = mpeg_quant_matrices + 7*64;
136    
137          for(i = 0; i < 64; i++) {          for(i = 0; i < 64; i++) {
138                  if((int16_t) default_inter_matrix[i] != matrix[i])                  inter_matrix1[i] = ((inter_matrix[i] = (int16_t) matrix[i])>>1);
139                          custom_inter_matrix = 1;                  inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0);
                 if(inter_matrix[i] != matrix[i])  
                         change = 1;  
   
                 inter_matrix[i] = (int16_t) matrix[i];  
140                  inter_matrix_fix[i] = FIX(inter_matrix[i]);                  inter_matrix_fix[i] = FIX(inter_matrix[i]);
141                    inter_matrix_fixl[i] = FIXL(inter_matrix[i]);
142          }          }
143          return custom_inter_matrix | change;  }
144    
145    void
146    init_mpeg_matrix(uint16_t * mpeg_quant_matrices) {
147    
148            set_intra_matrix(mpeg_quant_matrices, default_intra_matrix);
149            set_inter_matrix(mpeg_quant_matrices, default_inter_matrix);
150  }  }
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