[cvs] / xvidcore / src / global.h Repository:
ViewVC logotype

Diff of /xvidcore/src/global.h

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.7, Fri May 3 08:37:48 2002 UTC revision 1.18.2.1, Fri Apr 4 22:12:07 2003 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     * $Id$
54     *
55     ****************************************************************************/
56    
57  #ifndef _GLOBAL_H_  #ifndef _GLOBAL_H_
58  #define _GLOBAL_H_  #define _GLOBAL_H_
59    
# Line 32  Line 88 
88          uint32_t *tail;          uint32_t *tail;
89          uint32_t *start;          uint32_t *start;
90          uint32_t length;          uint32_t length;
91            uint32_t initpos;
92  }  }
93  Bitstream;  Bitstream;
94    
# Line 41  Line 98 
98    
99  typedef struct  typedef struct
100  {  {
101          // decoder/encoder          /* decoder/encoder  */
102          VECTOR mvs[4];          VECTOR mvs[4];
         uint32_t sad8[4];               // SAD values for inter4v-VECTORs  
         uint32_t sad16;                 // SAD value for inter-VECTOR  
103    
104      short int pred_values[6][MBPRED_SIZE];      short int pred_values[6][MBPRED_SIZE];
105      int acpred_directions[6];      int acpred_directions[6];
106    
107          int mode;          int mode;
108          int quant;              // absolute quant          int quant;                                      /* absolute quant */
109    
110          int field_dct;          int field_dct;
111          int field_pred;          int field_pred;
112          int field_for_top;          int field_for_top;
113          int field_for_bot;          int field_for_bot;
114    
115          // encoder specific          /* encoder specific */
116    
117            VECTOR mv16;
118          VECTOR pmvs[4];          VECTOR pmvs[4];
119    
120            int32_t sad8[4];                        /* SAD values for inter4v-VECTORs */
121            int32_t sad16;                          /* SAD value for inter-VECTOR */
122    
123          int dquant;          int dquant;
124          int cbp;          int cbp;
125    
126          // bframe stuff          /* bframe stuff */
127    
128          VECTOR b_mvs[4];          VECTOR b_mvs[4];
129          VECTOR b_pmvs[4];          VECTOR b_pmvs[4];
130    
131            /* bframe direct mode */
132    
133            VECTOR directmv[4];
134            VECTOR deltamv;
135    
136          int mb_type;          int mb_type;
137          int dbquant;          int dbquant;
138    
139  } MACROBLOCK;          /* stuff for block based ME (needed for Qpel ME) */
140            /* backup of last integer ME vectors/sad */
141    
142            VECTOR i_mv16;
143            VECTOR i_mvs[4];
144    
145            int32_t i_sad8[4];      /* SAD values for inter4v-VECTORs */
146            int32_t i_sad16;        /* SAD value for inter-VECTOR */
147    
148    }
149    MACROBLOCK;
150    
151  static __inline int8_t get_dc_scaler(uint32_t quant, uint32_t lum)  static __inline int8_t
152    get_dc_scaler(uint32_t quant,
153                              uint32_t lum)
154  {  {
155          if(quant < 5)          if(quant < 5)
156          return 8;          return 8;
157    
158          if(quant < 25 && !lum)          if(quant < 25 && !lum)
159          return (quant + 13) / 2;                  return (int8_t)((quant + 13) / 2);
160    
161          if(quant < 9)          if(quant < 9)
162          return 2 * quant;                  return (int8_t)(2 * quant);
163    
164      if(quant < 25)      if(quant < 25)
165          return quant + 8;                  return (int8_t)(quant + 8);
166    
167          if(lum)          if(lum)
168                  return 2 * quant - 16;                  return (int8_t)(2 * quant - 16);
169          else          else
170          return quant - 6;                  return (int8_t)(quant - 6);
171  }  }
172    
173  // useful macros  /* useful macros */
174    
175  #define MIN(X, Y) ((X)<(Y)?(X):(Y))  #define MIN(X, Y) ((X)<(Y)?(X):(Y))
176  #define MAX(X, Y) ((X)>(Y)?(X):(Y))  #define MAX(X, Y) ((X)>(Y)?(X):(Y))
Legend:
Removed from v.1.7  
changed lines
  Added in v.1.18.2.1
No admin address has been configured
 ViewVC Help
Powered by ViewVC 1.0.4