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revision 157, Fri May 3 08:37:55 2002 UTC revision 677, Tue Nov 26 23:44:11 2002 UTC
# Line 1  Line 1 
1    /*****************************************************************************
2     *
3     *  XVID MPEG-4 VIDEO CODEC
4     *  - Global structures, constants -
5     *
6     *  Copyright(C) 2002 Michael Militzer <isibaar@xvid.org>
7     *
8     *  This file is part of XviD, a free MPEG-4 video encoder/decoder
9     *
10     *  XviD is free software; you can redistribute it and/or modify it
11     *  under the terms of the GNU General Public License as published by
12     *  the Free Software Foundation; either version 2 of the License, or
13     *  (at your option) any later version.
14     *
15     *  This program is distributed in the hope that it will be useful,
16     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
17     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18     *  GNU General Public License for more details.
19     *
20     *  You should have received a copy of the GNU General Public License
21     *  along with this program; if not, write to the Free Software
22     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23     *
24     *  Under section 8 of the GNU General Public License, the copyright
25     *  holders of XVID explicitly forbid distribution in the following
26     *  countries:
27     *
28     *    - Japan
29     *    - United States of America
30     *
31     *  Linking XviD statically or dynamically with other modules is making a
32     *  combined work based on XviD.  Thus, the terms and conditions of the
33     *  GNU General Public License cover the whole combination.
34     *
35     *  As a special exception, the copyright holders of XviD give you
36     *  permission to link XviD with independent modules that communicate with
37     *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the
38     *  license terms of these independent modules, and to copy and distribute
39     *  the resulting combined work under terms of your choice, provided that
40     *  every copy of the combined work is accompanied by a complete copy of
41     *  the source code of XviD (the version of XviD used to produce the
42     *  combined work), being distributed under the terms of the GNU General
43     *  Public License plus this exception.  An independent module is a module
44     *  which is not derived from or based on XviD.
45     *
46     *  Note that people who make modified versions of XviD are not obligated
47     *  to grant this special exception for their modified versions; it is
48     *  their choice whether to do so.  The GNU General Public License gives
49     *  permission to release a modified version without this exception; this
50     *  exception also makes it possible to release a modified version which
51     *  carries forward this exception.
52     *
53     * $Id: global.h,v 1.17 2002-11-26 23:44:10 edgomez Exp $
54     *
55     ****************************************************************************/
56    
57  #ifndef _GLOBAL_H_  #ifndef _GLOBAL_H_
58  #define _GLOBAL_H_  #define _GLOBAL_H_
59    
# Line 41  Line 97 
97    
98  typedef struct  typedef struct
99  {  {
100          // decoder/encoder          /* decoder/encoder  */
101          VECTOR mvs[4];          VECTOR mvs[4];
         uint32_t sad8[4];               // SAD values for inter4v-VECTORs  
         uint32_t sad16;                 // SAD value for inter-VECTOR  
102    
103      short int pred_values[6][MBPRED_SIZE];      short int pred_values[6][MBPRED_SIZE];
104      int acpred_directions[6];      int acpred_directions[6];
105    
106          int mode;          int mode;
107          int quant;              // absolute quant          int quant;                                      /* absolute quant */
108    
109          int field_dct;          int field_dct;
110          int field_pred;          int field_pred;
111          int field_for_top;          int field_for_top;
112          int field_for_bot;          int field_for_bot;
113    
114          // encoder specific          /* encoder specific */
115    
116            VECTOR mv16;
117          VECTOR pmvs[4];          VECTOR pmvs[4];
118    
119            int32_t sad8[4];                        /* SAD values for inter4v-VECTORs */
120            int32_t sad16;                          /* SAD value for inter-VECTOR */
121    
122          int dquant;          int dquant;
123          int cbp;          int cbp;
124    
125          // bframe stuff          /* bframe stuff */
126    
127          VECTOR b_mvs[4];          VECTOR b_mvs[4];
128          VECTOR b_pmvs[4];          VECTOR b_pmvs[4];
129    
130            /* bframe direct mode */
131    
132            VECTOR directmv[4];
133            VECTOR deltamv;
134    
135          int mb_type;          int mb_type;
136          int dbquant;          int dbquant;
137    
138  } MACROBLOCK;          /* stuff for block based ME (needed for Qpel ME) */
139            /* backup of last integer ME vectors/sad */
140    
141            VECTOR i_mv16;
142            VECTOR i_mvs[4];
143    
144            int32_t i_sad8[4];      /* SAD values for inter4v-VECTORs */
145            int32_t i_sad16;        /* SAD value for inter-VECTOR */
146    
147    }
148    MACROBLOCK;
149    
150  static __inline int8_t get_dc_scaler(uint32_t quant, uint32_t lum)  static __inline int8_t
151    get_dc_scaler(uint32_t quant,
152                              uint32_t lum)
153  {  {
154          if(quant < 5)          if(quant < 5)
155          return 8;          return 8;
# Line 93  Line 169 
169          return quant - 6;          return quant - 6;
170  }  }
171    
172  // useful macros  /* useful macros */
173    
174  #define MIN(X, Y) ((X)<(Y)?(X):(Y))  #define MIN(X, Y) ((X)<(Y)?(X):(Y))
175  #define MAX(X, Y) ((X)>(Y)?(X):(Y))  #define MAX(X, Y) ((X)>(Y)?(X):(Y))

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