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revision 1.18, Sun Dec 15 01:21:12 2002 UTC revision 1.21.2.3, Fri Apr 4 22:13:35 2003 UTC
# Line 1  Line 1 
 /*****************************************************************************  
  *  
  *  XVID MPEG-4 VIDEO CODEC  
  *  - Global structures, constants -  
  *  
  *  Copyright(C) 2002 Michael Militzer <isibaar@xvid.org>  
  *  
  *  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.  
  *  
  * $Id$  
  *  
  ****************************************************************************/  
   
1  #ifndef _GLOBAL_H_  #ifndef _GLOBAL_H_
2  #define _GLOBAL_H_  #define _GLOBAL_H_
3    
# Line 67  Line 11 
11  #define MODE_INTER4V    2  #define MODE_INTER4V    2
12  #define MODE_INTRA              3  #define MODE_INTRA              3
13  #define MODE_INTRA_Q    4  #define MODE_INTRA_Q    4
 #define MODE_STUFFING   7  
14  #define MODE_NOT_CODED  16  #define MODE_NOT_CODED  16
15    #define MODE_NOT_CODED_GMC      17
16    
17  /* --- bframe specific --- */  /* --- bframe specific --- */
18    
# Line 77  Line 21 
21  #define MODE_BACKWARD           2  #define MODE_BACKWARD           2
22  #define MODE_FORWARD            3  #define MODE_FORWARD            3
23  #define MODE_DIRECT_NONE_MV     4  #define MODE_DIRECT_NONE_MV     4
24    #define MODE_DIRECT_NO4V        5
25    
26    
27    // vop coding types
28    // intra, prediction, backward, sprite, not_coded
29    #define I_VOP   0
30    #define P_VOP   1
31    #define B_VOP   2
32    #define S_VOP   3
33    #define N_VOP   4
34    
35    /* convert mpeg-4 coding type i/p/b/s_VOP to XVID_TYPE_xxx */
36    static __inline int
37    coding2type(int coding_type)
38    {
39            return coding_type + 1;
40    }
41    
42    /* convert XVID_TYPE_xxx to bitstream coding type i/p/b/s_VOP */
43    static __inline int
44    type2coding(int xvid_type)
45    {
46            return xvid_type - 1;
47    }
48    
49    
50    typedef struct
51    {
52            int x;
53            int y;
54    }
55    VECTOR;
56    
57    
58    
59    typedef struct
60    {
61            VECTOR duv[3];
62    }
63    WARPPOINTS;
64    
65    /* save all warping parameters for GMC once and for all, instead of
66       recalculating for every block. This is needed for encoding&decoding
67       When switching to incremental calculations, this will get much shorter
68    */
69    
70    /*      we don't include WARPPOINTS wp  here, but in FRAMEINFO itself */
71    
72    typedef struct
73    {
74            int num_wp;             //      [input]: 0=none, 1=translation, 2,3 = warping
75                                                            //  a value of -1 means: "structure not initialized!"
76            int s;                                  //  [input]: calc is done with 1/s pel resolution
77    
78            int W;
79            int H;
80    
81            int ss;
82            int smask;
83            int sigma;
84    
85            int r;
86            int rho;
87    
88            int i0s;
89            int j0s;
90            int i1s;
91            int j1s;
92            int i2s;
93            int j2s;
94    
95            int i1ss;
96            int j1ss;
97            int i2ss;
98            int j2ss;
99    
100            int alpha;
101            int beta;
102            int Ws;
103            int Hs;
104    
105            int dxF, dyF, dxG, dyG;
106            int Fo, Go;
107            int cFo, cGo;
108    }
109    GMC_DATA;
110    
111    
112    typedef struct
113    {
114            uint8_t *y;
115            uint8_t *u;
116            uint8_t *v;
117    }
118    IMAGE;
119    
120    
121  typedef struct  typedef struct
# Line 88  Line 127 
127          uint32_t *tail;          uint32_t *tail;
128          uint32_t *start;          uint32_t *start;
129          uint32_t length;          uint32_t length;
130            uint32_t initpos;
131  }  }
132  Bitstream;  Bitstream;
133    
# Line 97  Line 137 
137    
138  typedef struct  typedef struct
139  {  {
140          /* decoder/encoder  */          // decoder/encoder
141          VECTOR mvs[4];          VECTOR mvs[4];
142    
143          short int pred_values[6][MBPRED_SIZE];          short int pred_values[6][MBPRED_SIZE];
144          int acpred_directions[6];          int acpred_directions[6];
145    
146          int mode;          int mode;
147          int quant;                                      /* absolute quant */          int quant;                                      // absolute quant
148    
149          int field_dct;          int field_dct;
150          int field_pred;          int field_pred;
151          int field_for_top;          int field_for_top;
152          int field_for_bot;          int field_for_bot;
153    
154          /* encoder specific */          // encoder specific
155    
156          VECTOR mv16;          VECTOR mv16;
157          VECTOR pmvs[4];          VECTOR pmvs[4];
158            VECTOR qmvs[4];                         // mvs in quarter pixel resolution
159    
160          int32_t sad8[4];                        /* SAD values for inter4v-VECTORs */          int32_t sad8[4];                        // SAD values for inter4v-VECTORs
161          int32_t sad16;                          /* SAD value for inter-VECTOR */          int32_t sad16;                          // SAD value for inter-VECTOR
162    
163          int dquant;          int dquant;
164          int cbp;          int cbp;
165    
166          /* bframe stuff */          // bframe stuff
167    
168          VECTOR b_mvs[4];          VECTOR b_mvs[4];
169          VECTOR b_pmvs[4];          VECTOR b_qmvs[4];
   
         /* bframe direct mode */  
   
         VECTOR directmv[4];  
         VECTOR deltamv;  
170    
171          int mb_type;          int mb_type;
         int dbquant;  
172    
173          /* stuff for block based ME (needed for Qpel ME) */          // stuff for block based ME (needed for Qpel ME)
174          /* backup of last integer ME vectors/sad */          // backup of last integer ME vectors/sad
175    
176          VECTOR i_mv16;          VECTOR amv; // average motion vectors from GMC
177          VECTOR i_mvs[4];          int32_t mcsel;
178    
179          int32_t i_sad8[4];      /* SAD values for inter4v-VECTORs */  /* This structure has become way to big! What to do? Split it up?   */
         int32_t i_sad16;        /* SAD value for inter-VECTOR */  
180    
181  }  }
182  MACROBLOCK;  MACROBLOCK;
183    
184  static __inline int8_t  static __inline uint32_t
185  get_dc_scaler(uint32_t quant,  get_dc_scaler(uint32_t quant,
186                            uint32_t lum)                            uint32_t lum)
187  {  {
# Line 155  Line 189 
189                  return 8;                  return 8;
190    
191          if (quant < 25 && !lum)          if (quant < 25 && !lum)
192                  return (int8_t)((quant + 13) / 2);                  return (quant + 13) / 2;
193    
194          if (quant < 9)          if (quant < 9)
195                  return (int8_t)(2 * quant);                  return 2 * quant;
196    
197          if (quant < 25)          if (quant < 25)
198                  return (int8_t)(quant + 8);                  return quant + 8;
199    
200          if (lum)          if (lum)
201                  return (int8_t)(2 * quant - 16);                  return 2 * quant - 16;
202          else          else
203                  return (int8_t)(quant - 6);                  return quant - 6;
204  }  }
205    
206  /* useful macros */  // useful macros
207    
208  #define MIN(X, Y) ((X)<(Y)?(X):(Y))  #define MIN(X, Y) ((X)<(Y)?(X):(Y))
209  #define MAX(X, Y) ((X)>(Y)?(X):(Y))  #define MAX(X, Y) ((X)>(Y)?(X):(Y))
210  #define ABS(X)    (((X)>0)?(X):-(X))  #define ABS(X)    (((X)>0)?(X):-(X))
211  #define SIGN(X)   (((X)>0)?1:-1)  #define SIGN(X)   (((X)>0)?1:-1)
212    #define CLIP(X,AMIN,AMAX)   (((X)<(AMIN)) ? (AMIN) : ((X)>(AMAX)) ? (AMAX) : (X))
213    #define DIV_DIV(a,b)    (((a)>0) ? ((a)+((b)>>1))/(b) : ((a)-((b)>>1))/(b))
214    #define SWAP(_T_,A,B)    { _T_ tmp = A; A = B; B = tmp; }
215    
216    
217  #endif /* _GLOBAL_H_ */  #endif /* _GLOBAL_H_ */

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