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revision 1.15, Sat Oct 19 11:41:11 2002 UTC revision 1.27, Sun Nov 28 15:18:21 2010 UTC
# Line 1  Line 1 
1  /*****************************************************************************  /*****************************************************************************
2   *   *
3   *  XVID MPEG-4 VIDEO CODEC   *  XVID MPEG-4 VIDEO CODEC
4   *  - Global structures, constants -   *  - Global definitions  -
5   *   *
6   *  Copyright(C) 2002 Michael Militzer <isibaar@xvid.org>   *  Copyright(C) 2002-2010 Michael Militzer <michael@xvid.org>
  *  
  *  This program is an implementation of a part of one or more MPEG-4  
  *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending  
  *  to use this software module in hardware or software products are  
  *  advised that its use may infringe existing patents or copyrights, and  
  *  any such use would be at such party's own risk.  The original  
  *  developer of this software module and his/her company, and subsequent  
  *  editors and their companies, will have no liability for use of this  
  *  software or modifications or derivatives thereof.  
7   *   *
8   *  This program is free software ; you can redistribute it and/or modify   *  This program is free software ; you can redistribute it and/or modify
9   *  it under the terms of the GNU General Public License as published by   *  it under the terms of the GNU General Public License as published by
# Line 45  Line 36 
36  #define MODE_INTER4V    2  #define MODE_INTER4V    2
37  #define MODE_INTRA              3  #define MODE_INTRA              3
38  #define MODE_INTRA_Q    4  #define MODE_INTRA_Q    4
 #define MODE_STUFFING   7  
39  #define MODE_NOT_CODED  16  #define MODE_NOT_CODED  16
40    #define MODE_NOT_CODED_GMC      17
41    
42  /* --- bframe specific --- */  /* --- bframe specific --- */
43    
# Line 55  Line 46 
46  #define MODE_BACKWARD           2  #define MODE_BACKWARD           2
47  #define MODE_FORWARD            3  #define MODE_FORWARD            3
48  #define MODE_DIRECT_NONE_MV     4  #define MODE_DIRECT_NONE_MV     4
49    #define MODE_DIRECT_NO4V        5
50    
51    /*
52     * vop coding types
53     * intra, prediction, backward, sprite, not_coded
54     */
55    #define I_VOP   0
56    #define P_VOP   1
57    #define B_VOP   2
58    #define S_VOP   3
59    #define N_VOP   4
60    
61    /* convert mpeg-4 coding type i/p/b/s_VOP to XVID_TYPE_xxx */
62    static __inline int
63    coding2type(int coding_type)
64    {
65            return coding_type + 1;
66    }
67    
68    /* convert XVID_TYPE_xxx to bitstream coding type i/p/b/s_VOP */
69    static __inline int
70    type2coding(int xvid_type)
71    {
72            return xvid_type - 1;
73    }
74    
75    typedef struct
76    {
77            int x;
78            int y;
79    }
80    VECTOR;
81    
82    typedef struct
83    {
84            VECTOR duv[3];
85    }
86    WARPPOINTS;
87    
88    /* save all warping parameters for GMC once and for all, instead of
89       recalculating for every block. This is needed for encoding&decoding
90       When switching to incremental calculations, this will get much shorter
91    */
92    
93    /*      we don't include WARPPOINTS wp  here, but in FRAMEINFO itself */
94    
95    typedef struct
96    {
97            int num_wp;             /* [input]: 0=none, 1=translation, 2,3 = warping */
98                                                            /* a value of -1 means: "structure not initialized!" */
99            int s;                                  /* [input]: calc is done with 1/s pel resolution */
100    
101            int W;
102            int H;
103    
104            int ss;
105            int smask;
106            int sigma;
107    
108            int r;
109            int rho;
110    
111            int i0s;
112            int j0s;
113            int i1s;
114            int j1s;
115            int i2s;
116            int j2s;
117    
118            int i1ss;
119            int j1ss;
120            int i2ss;
121            int j2ss;
122    
123            int alpha;
124            int beta;
125            int Ws;
126            int Hs;
127    
128            int dxF, dyF, dxG, dyG;
129            int Fo, Go;
130            int cFo, cGo;
131    } GMC_DATA;
132    
133    typedef struct _NEW_GMC_DATA
134    {
135       /*  0=none, 1=translation, 2,3 = warping
136            *  a value of -1 means: "structure not initialized!" */
137            int num_wp;
138    
139            /* {0,1,2,3}  =>   {1/2,1/4,1/8,1/16} pel */
140            int accuracy;
141    
142            /* sprite size * 16 */
143            int sW, sH;
144    
145            /* gradient, calculated from warp points */
146            int dU[2], dV[2], Uo, Vo, Uco, Vco;
147    
148            void (*predict_16x16)(const struct _NEW_GMC_DATA * const This,
149                                                      uint8_t *dst, const uint8_t *src,
150                                                      int dststride, int srcstride, int x, int y, int rounding);
151            void (*predict_8x8)  (const struct _NEW_GMC_DATA * const This,
152                                                      uint8_t *uDst, const uint8_t *uSrc,
153                                                      uint8_t *vDst, const uint8_t *vSrc,
154                                                      int dststride, int srcstride, int x, int y, int rounding);
155            void (*get_average_mv)(const struct _NEW_GMC_DATA * const Dsp, VECTOR * const mv,
156                                                       int x, int y, int qpel);
157    } NEW_GMC_DATA;
158    
159    typedef struct
160    {
161            uint8_t *y;
162            uint8_t *u;
163            uint8_t *v;
164    }
165    IMAGE;
166    
167  typedef struct  typedef struct
168  {  {
# Line 66  Line 173 
173          uint32_t *tail;          uint32_t *tail;
174          uint32_t *start;          uint32_t *start;
175          uint32_t length;          uint32_t length;
176            uint32_t initpos;
177  }  }
178  Bitstream;  Bitstream;
179    
   
180  #define MBPRED_SIZE  15  #define MBPRED_SIZE  15
181    
   
182  typedef struct  typedef struct
183  {  {
184          // decoder/encoder          /* decoder/encoder */
185          VECTOR mvs[4];          VECTOR mvs[4];
186    
187          short int pred_values[6][MBPRED_SIZE];          short int pred_values[6][MBPRED_SIZE];
188          int acpred_directions[6];          int acpred_directions[6];
189    
190          int mode;          int mode;
191          int quant;                                      // absolute quant          int quant;                                      /* absolute quant */
192    
193          int field_dct;          int field_dct;
194          int field_pred;          int field_pred;
195          int field_for_top;          int field_for_top;
196          int field_for_bot;          int field_for_bot;
197    
198          // encoder specific          /* encoder specific */
199    
         VECTOR mv16;  
200          VECTOR pmvs[4];          VECTOR pmvs[4];
201            VECTOR qmvs[4];                         /* mvs in quarter pixel resolution */
202    
203          int32_t sad8[4];                        // SAD values for inter4v-VECTORs          int32_t sad8[4];                        /* SAD values for inter4v-VECTORs */
204          int32_t sad16;                          // SAD value for inter-VECTOR          int32_t sad16;                          /* SAD value for inter-VECTOR */
205    
206            int32_t var16;                          /* Variance of the 16x16 luma block */
207            int32_t rel_var8[6];            /* Relative variances of the 8x8 sub-blocks */
208    
209          int dquant;          int dquant;
210          int cbp;          int cbp;
211    
212          // bframe stuff          /* lambda for these blocks */
213            int lambda[6];
         VECTOR b_mvs[4];  
         VECTOR b_pmvs[4];  
214    
215          // bframe direct mode          /* bframe stuff */
216    
217          VECTOR directmv[4];          VECTOR b_mvs[4];
218          VECTOR deltamv;          VECTOR b_qmvs[4];
   
         int mb_type;  
         int dbquant;  
219    
220          // stuff for block based ME (needed for Qpel ME)          VECTOR amv; /* average motion vectors from GMC  */
221          // backup of last integer ME vectors/sad          int32_t mcsel;
222    
223          VECTOR i_mv16;          VECTOR  mvs_avg;      //CK average of field motion vectors
         VECTOR i_mvs[4];  
224    
225          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  
226    
227  }  }
228  MACROBLOCK;  MACROBLOCK;
229    
230  static __inline int8_t  static __inline uint32_t
231  get_dc_scaler(uint32_t quant,  get_dc_scaler(uint32_t quant,
232                            uint32_t lum)                            uint32_t lum)
233  {  {
# Line 147  Line 249 
249                  return quant - 6;                  return quant - 6;
250  }  }
251    
252  // useful macros  /* useful macros */
253    
254  #define MIN(X, Y) ((X)<(Y)?(X):(Y))  #define MIN(X, Y) ((X)<(Y)?(X):(Y))
255  #define MAX(X, Y) ((X)>(Y)?(X):(Y))  #define MAX(X, Y) ((X)>(Y)?(X):(Y))
256  #define ABS(X)    (((X)>0)?(X):-(X))  /* #define ABS(X)    (((X)>0)?(X):-(X)) */
257  #define SIGN(X)   (((X)>0)?1:-1)  #define SIGN(X)   (((X)>0)?1:-1)
258    #define CLIP(X,AMIN,AMAX)   (((X)<(AMIN)) ? (AMIN) : ((X)>(AMAX)) ? (AMAX) : (X))
259    #define DIV_DIV(a,b)    (((a)>0) ? ((a)+((b)>>1))/(b) : ((a)-((b)>>1))/(b))
260    #define SWAP(_T_,A,B)    { _T_ tmp = A; A = B; B = tmp; }
261    
262    static __inline uint32_t
263    isqrt(unsigned long n)
264    {
265        uint32_t c = 0x8000;
266        uint32_t g = 0x8000;
267    
268        for(;;) {
269            if(g*g > n)
270                g ^= c;
271            c >>= 1;
272            if(c == 0)
273                return g;
274            g |= c;
275        }
276    }
277    
278  #endif /* _GLOBAL_H_ */  #endif /* _GLOBAL_H_ */

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