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Diff of /xvidcore/src/motion/estimation_common.c

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revision 1.1.2.1, Wed Sep 10 22:18:59 2003 UTC revision 1.13, Fri Dec 9 04:39:49 2005 UTC
# Line 55  Line 55 
55  { 0, 1, 0, 0 };  { 0, 1, 0, 0 };
56    
57  const int xvid_me_lambda_vec16[32] =  const int xvid_me_lambda_vec16[32] =
58          {     0    ,(int)(1.00235 * NEIGH_TEND_16X16 + 0.5),          {     0    ,(int)(1.0 * NEIGH_TEND_16X16 + 0.5),
59          (int)(1.15582*NEIGH_TEND_16X16 + 0.5), (int)(1.31976*NEIGH_TEND_16X16 + 0.5),          (int)(2.0*NEIGH_TEND_16X16 + 0.5), (int)(3.0*NEIGH_TEND_16X16 + 0.5),
60          (int)(1.49591*NEIGH_TEND_16X16 + 0.5), (int)(1.68601*NEIGH_TEND_16X16 + 0.5),          (int)(4.0*NEIGH_TEND_16X16 + 0.5), (int)(5.0*NEIGH_TEND_16X16 + 0.5),
61          (int)(1.89187*NEIGH_TEND_16X16 + 0.5), (int)(2.11542*NEIGH_TEND_16X16 + 0.5),          (int)(6.0*NEIGH_TEND_16X16 + 0.5), (int)(7.0*NEIGH_TEND_16X16 + 0.5),
62          (int)(2.35878*NEIGH_TEND_16X16 + 0.5), (int)(2.62429*NEIGH_TEND_16X16 + 0.5),          (int)(8.0*NEIGH_TEND_16X16 + 0.5), (int)(9.0*NEIGH_TEND_16X16 + 0.5),
63          (int)(2.91455*NEIGH_TEND_16X16 + 0.5), (int)(3.23253*NEIGH_TEND_16X16 + 0.5),          (int)(10.0*NEIGH_TEND_16X16 + 0.5), (int)(11.0*NEIGH_TEND_16X16 + 0.5),
64          (int)(3.58158*NEIGH_TEND_16X16 + 0.5), (int)(3.96555*NEIGH_TEND_16X16 + 0.5),          (int)(12.0*NEIGH_TEND_16X16 + 0.5), (int)(13.0*NEIGH_TEND_16X16 + 0.5),
65          (int)(4.38887*NEIGH_TEND_16X16 + 0.5), (int)(4.85673*NEIGH_TEND_16X16 + 0.5),          (int)(14.0*NEIGH_TEND_16X16 + 0.5), (int)(15.0*NEIGH_TEND_16X16 + 0.5),
66          (int)(5.37519*NEIGH_TEND_16X16 + 0.5), (int)(5.95144*NEIGH_TEND_16X16 + 0.5),          (int)(16.0*NEIGH_TEND_16X16 + 0.5), (int)(17.0*NEIGH_TEND_16X16 + 0.5),
67          (int)(6.59408*NEIGH_TEND_16X16 + 0.5), (int)(7.31349*NEIGH_TEND_16X16 + 0.5),          (int)(18.0*NEIGH_TEND_16X16 + 0.5), (int)(19.0*NEIGH_TEND_16X16 + 0.5),
68          (int)(8.12242*NEIGH_TEND_16X16 + 0.5), (int)(9.03669*NEIGH_TEND_16X16 + 0.5),          (int)(20.0*NEIGH_TEND_16X16 + 0.5), (int)(21.0*NEIGH_TEND_16X16 + 0.5),
69          (int)(10.0763*NEIGH_TEND_16X16 + 0.5), (int)(11.2669*NEIGH_TEND_16X16 + 0.5),          (int)(22.0*NEIGH_TEND_16X16 + 0.5), (int)(23.0*NEIGH_TEND_16X16 + 0.5),
70          (int)(12.6426*NEIGH_TEND_16X16 + 0.5), (int)(14.2493*NEIGH_TEND_16X16 + 0.5),          (int)(24.0*NEIGH_TEND_16X16 + 0.5), (int)(25.0*NEIGH_TEND_16X16 + 0.5),
71          (int)(16.1512*NEIGH_TEND_16X16 + 0.5), (int)(18.442*NEIGH_TEND_16X16 + 0.5),          (int)(26.0*NEIGH_TEND_16X16 + 0.5), (int)(27.0*NEIGH_TEND_16X16 + 0.5),
72          (int)(21.2656*NEIGH_TEND_16X16 + 0.5), (int)(24.8580*NEIGH_TEND_16X16 + 0.5),          (int)(28.0*NEIGH_TEND_16X16 + 0.5), (int)(29.0*NEIGH_TEND_16X16 + 0.5),
73          (int)(29.6436*NEIGH_TEND_16X16 + 0.5), (int)(36.4949*NEIGH_TEND_16X16 + 0.5)          (int)(30.0*NEIGH_TEND_16X16 + 0.5), (int)(31.0*NEIGH_TEND_16X16 + 0.5)
74  };  };
75    
76  /*****************************************************************************  /*****************************************************************************
# Line 78  Line 78 
78   ****************************************************************************/   ****************************************************************************/
79    
80  int32_t  int32_t
81  xvid_me_ChromaSAD(const int dx, const int dy, const SearchData * const data)  xvid_me_ChromaSAD(const int dx, const int dy, SearchData * const data)
82  {  {
83          int sad;          int sad;
84          const uint32_t stride = data->iEdgedWidth/2;          const uint32_t stride = data->iEdgedWidth/2;
85          int offset = (dx>>1) + (dy>>1)*stride;          int offset = (dx>>1) + (dy>>1)*stride;
86          int next = 1;          int next = 1;
87    
88          if (dx == data->temp[5] && dy == data->temp[6]) return data->temp[7]; /* it has been checked recently */          if (dx == data->chromaX && dy == data->chromaY)
89          data->temp[5] = dx; data->temp[6] = dy; /* backup */                  return data->chromaSAD; /* it has been checked recently */
90            data->chromaX = dx; data->chromaY = dy; /* backup */
91    
92          switch (((dx & 1) << 1) | (dy & 1))     {          switch (((dx & 1) << 1) | (dy & 1))     {
93                  case 0:                  case 0:
# Line 107  Line 108 
108                          sad += sad8(data->CurV, data->RefQ, stride);                          sad += sad8(data->CurV, data->RefQ, stride);
109                          break;                          break;
110          }          }
111          data->temp[7] = sad; /* backup, part 2 */          data->chromaSAD = sad; /* backup, part 2 */
112          return sad;          return sad;
113  }  }
114    
# Line 206  Line 207 
207  }  }
208    
209  void  void
210  xvid_me_AdvDiamondSearch(int x, int y, const SearchData * const data,  xvid_me_AdvDiamondSearch(int x, int y, SearchData * const data,
211                                                   int bDirection, CheckFunc * const CheckCandidate)                                                   int bDirection, CheckFunc * const CheckCandidate)
212  {  {
213    
214  /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */  /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */
215    
216          unsigned int * const iDirection = data->dir;          unsigned int * const iDirection = &data->dir;
217    
218          for(;;) { /* forever */          for(;;) { /* forever */
219                  *iDirection = 0;                  *iDirection = 0;
# Line 268  Line 269 
269                                  CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);                                  CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
270                                  break;                                  break;
271                          case 2 + 8:                          case 2 + 8:
272                                  CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);                                  CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);
                                 CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);  
273                                  CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);                                  CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
274                                    CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
275                                  break;                                  break;
276                          case 1 + 8:                          case 1 + 8:
277                                  CHECK_CANDIDATE(x + iDiamondSize, y - iDiamondSize, 2 + 4);                                  CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
                                 CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);  
278                                  CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);                                  CHECK_CANDIDATE(x - iDiamondSize, y + iDiamondSize, 1 + 8);
279                                    CHECK_CANDIDATE(x + iDiamondSize, y + iDiamondSize, 2 + 8);
280                                  break;                                  break;
281                          default:                /* 1+2+4+8 == we didn't find anything at all */                          default:                /* 1+2+4+8 == we didn't find anything at all */
282                                  CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);                                  CHECK_CANDIDATE(x - iDiamondSize, y - iDiamondSize, 1 + 4);
# Line 292  Line 293 
293  }  }
294    
295  void  void
296  xvid_me_SquareSearch(int x, int y, const SearchData * const data,  xvid_me_SquareSearch(int x, int y, SearchData * const data,
297                                           int bDirection, CheckFunc * const CheckCandidate)                                           int bDirection, CheckFunc * const CheckCandidate)
298  {  {
299          unsigned int * const iDirection = data->dir;          unsigned int * const iDirection = &data->dir;
300    
301          do {          do {
302                  *iDirection = 0;                  *iDirection = 0;
# Line 314  Line 315 
315  }  }
316    
317  void  void
318  xvid_me_DiamondSearch(int x, int y, const SearchData * const data,  xvid_me_DiamondSearch(int x, int y, SearchData * const data,
319                                            int bDirection, CheckFunc * const CheckCandidate)                                            int bDirection, CheckFunc * const CheckCandidate)
320  {  {
321    
322  /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */  /* directions: 1 - left (x-1); 2 - right (x+1), 4 - up (y-1); 8 - down (y+1) */
323    
324          unsigned int * const iDirection = data->dir;          unsigned int * const iDirection = &data->dir;
325    
326          do {          for (;;) {
327                  *iDirection = 0;                  *iDirection = 0;
328                  if (bDirection & 1) CHECK_CANDIDATE(x - iDiamondSize, y, 1);                  if (bDirection & 1) CHECK_CANDIDATE(x - iDiamondSize, y, 1);
329                  if (bDirection & 2) CHECK_CANDIDATE(x + iDiamondSize, y, 2);                  if (bDirection & 2) CHECK_CANDIDATE(x + iDiamondSize, y, 2);
330                  if (bDirection & 4) CHECK_CANDIDATE(x, y - iDiamondSize, 4);                  if (bDirection & 4) CHECK_CANDIDATE(x, y - iDiamondSize, 4);
331                  if (bDirection & 8) CHECK_CANDIDATE(x, y + iDiamondSize, 8);                  if (bDirection & 8) CHECK_CANDIDATE(x, y + iDiamondSize, 8);
332    
333                  /* now we're doing diagonal checks near our candidate */                  if (*iDirection == 0)
334                            break;
335    
336                  if (*iDirection) {              /* checking if anything found */                  /* now we're doing diagonal checks near our candidate */
337                          bDirection = *iDirection;                          bDirection = *iDirection;
                         *iDirection = 0;  
338                          x = data->currentMV->x; y = data->currentMV->y;                          x = data->currentMV->x; y = data->currentMV->y;
339                          if (bDirection & 3) {   /* our candidate is left or right */                          if (bDirection & 3) {   /* our candidate is left or right */
340                                  CHECK_CANDIDATE(x, y + iDiamondSize, 8);                                  CHECK_CANDIDATE(x, y + iDiamondSize, 8);
# Line 342  Line 343 
343                                  CHECK_CANDIDATE(x + iDiamondSize, y, 2);                                  CHECK_CANDIDATE(x + iDiamondSize, y, 2);
344                                  CHECK_CANDIDATE(x - iDiamondSize, y, 1);                                  CHECK_CANDIDATE(x - iDiamondSize, y, 1);
345                          }                          }
346                          bDirection += *iDirection;                  bDirection |= *iDirection;
347                          x = data->currentMV->x; y = data->currentMV->y;                          x = data->currentMV->x; y = data->currentMV->y;
348                  }                  }
349          }          }
         while (*iDirection);  
 }  
350    
351  void  void
352  xvid_me_SubpelRefine(const SearchData * const data, CheckFunc * const CheckCandidate)  xvid_me_SubpelRefine(VECTOR centerMV, SearchData * const data, CheckFunc * const CheckCandidate, int dir)
353  {  {
354  /* Do a half-pel or q-pel refinement */  /* Do a half-pel or q-pel refinement */
         const VECTOR centerMV = data->qpel_precision ? *data->currentQMV : *data->currentMV;  
355    
356          CHECK_CANDIDATE(centerMV.x, centerMV.y - 1, 0);          CHECK_CANDIDATE(centerMV.x, centerMV.y - 1, dir);
357          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y - 1, 0);          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y - 1, dir);
358          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y, 0);          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y, dir);
359          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y + 1, 0);          CHECK_CANDIDATE(centerMV.x + 1, centerMV.y + 1, dir);
360          CHECK_CANDIDATE(centerMV.x, centerMV.y + 1, 0);          CHECK_CANDIDATE(centerMV.x, centerMV.y + 1, dir);
361          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y + 1, 0);          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y + 1, dir);
362          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y, 0);          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y, dir);
363          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y - 1, 0);          CHECK_CANDIDATE(centerMV.x - 1, centerMV.y - 1, dir);
364    }
365    
366    #define CHECK_CANDIDATE_2ndBEST(X, Y, DIR) { \
367            *data->iMinSAD = s_best2; \
368            CheckCandidate((X),(Y), data, direction); \
369            if (data->iMinSAD[0] < s_best) { \
370                    s_best2 = s_best; \
371                    s_best = data->iMinSAD[0]; \
372                    v_best2 = v_best; \
373                    v_best.x = X; v_best.y = Y; \
374                    dir = DIR; \
375            } else if (data->iMinSAD[0] < s_best2) { \
376                    s_best2 = data->iMinSAD[0]; \
377                    v_best2.x = X; v_best2.y = Y; \
378            } \
379  }  }
380    
381    void
382    FullRefine_Fast(SearchData * data, CheckFunc * CheckCandidate, int direction)
383    {
384    /* Do a fast h-pel and then q-pel refinement */
385    
386            int32_t s_best = data->iMinSAD[0], s_best2 = 256*4096;
387            VECTOR v_best, v_best2;
388            int dir = 0, xo2, yo2, best_halfpel, b_cbp;
389    
390            int xo = 2*data->currentMV[0].x, yo = 2*data->currentMV[0].y;
391    
392            data->currentQMV[0].x = v_best.x = v_best2.x = xo;
393            data->currentQMV[0].y = v_best.y = v_best2.y = yo;
394    
395            data->qpel_precision = 1;
396    
397            /* halfpel refinement: check 8 neighbours, but keep the second best SAD as well */
398            CHECK_CANDIDATE_2ndBEST(xo - 2, yo,             1+16+64);
399            CHECK_CANDIDATE_2ndBEST(xo + 2, yo,             2+32+128);
400            CHECK_CANDIDATE_2ndBEST(xo,             yo - 2, 4+16+32);
401            CHECK_CANDIDATE_2ndBEST(xo,             yo + 2, 8+64+128);
402            CHECK_CANDIDATE_2ndBEST(xo - 2, yo - 2, 1+4+16+32+64);
403            CHECK_CANDIDATE_2ndBEST(xo + 2, yo - 2, 2+4+16+32+128);
404            CHECK_CANDIDATE_2ndBEST(xo - 2, yo + 2, 1+8+16+64+128);
405            CHECK_CANDIDATE_2ndBEST(xo + 2, yo + 2, 2+8+32+64+128);
406    
407            xo = v_best.x; yo = v_best.y, b_cbp = data->cbp[0];
408    
409            /* we need all 8 neighbours *of best hpel position found above* checked for 2nd best
410                    let's check the missing ones */
411    
412            /* on rare occasions, 1st best and 2nd best are far away, and 2nd best is not 1st best's neighbour.
413                    to simplify stuff, we'll forget that evil 2nd best and make a full search for a new 2nd best */
414            /* todo. we should check the missing neighbours first, maybe they'll give us 2nd best which is even better
415                    than the infamous one. in that case, we will not have to re-check the other neighbours */
416    
417            if (abs(v_best.x - v_best2.x) > 2 || abs(v_best.y - v_best2.y) > 2) { /* v_best2 is useless */
418                    data->iMinSAD[0] = 256*4096;
419                    dir = ~0; /* all */
420            } else {
421                    data->iMinSAD[0] = s_best2;
422                    data->currentQMV[0] = v_best2;
423            }
424    
425            if (dir & 1) CHECK_CANDIDATE(   xo - 2, yo,             direction);
426            if (dir & 2) CHECK_CANDIDATE(   xo + 2, yo,             direction);
427            if (dir & 4) CHECK_CANDIDATE(   xo,             yo - 2, direction);
428            if (dir & 8) CHECK_CANDIDATE(   xo,             yo + 2, direction);
429            if (dir & 16) CHECK_CANDIDATE(  xo - 2, yo - 2, direction);
430            if (dir & 32) CHECK_CANDIDATE(  xo + 2, yo - 2, direction);
431            if (dir & 64) CHECK_CANDIDATE(  xo - 2, yo + 2, direction);
432            if (dir & 128) CHECK_CANDIDATE( xo + 2, yo + 2, direction);
433    
434            /* read the position of 2nd best */
435            v_best2 = data->currentQMV[0];
436    
437            /* after second_best has been found, go back to best vector */
438    
439            data->currentQMV[0].x = xo;
440            data->currentQMV[0].y = yo;
441            data->cbp[0] = b_cbp;
442    
443            data->currentMV[0].x = xo/2;
444            data->currentMV[0].y = yo/2;
445            data->iMinSAD[0] = best_halfpel = s_best;
446    
447            xo2 = v_best2.x;
448            yo2 = v_best2.y;
449            s_best2 = 256*4096;
450    
451            if (yo == yo2) {
452                    CHECK_CANDIDATE_2ndBEST((xo+xo2)>>1, yo, 0);
453                    CHECK_CANDIDATE_2ndBEST(xo, yo-1, 0);
454                    CHECK_CANDIDATE_2ndBEST(xo, yo+1, 0);
455                    data->currentQMV[0] = v_best;
456                    data->iMinSAD[0] = s_best;
457    
458                    if(best_halfpel <= s_best2) return;
459    
460                    if(data->currentQMV[0].x == v_best2.x) {
461                            CHECK_CANDIDATE((xo+xo2)>>1, yo-1, direction);
462                            CHECK_CANDIDATE((xo+xo2)>>1, yo+1, direction);
463                    } else {
464                            CHECK_CANDIDATE((xo+xo2)>>1,
465                                    (data->currentQMV[0].x == xo) ? data->currentQMV[0].y : v_best2.y, direction);
466                    }
467                    return;
468            }
469    
470            if (xo == xo2) {
471                    CHECK_CANDIDATE_2ndBEST(xo, (yo+yo2)>>1, 0);
472                    CHECK_CANDIDATE_2ndBEST(xo-1, yo, 0);
473                    CHECK_CANDIDATE_2ndBEST(xo+1, yo, 0);
474                    data->currentQMV[0] = v_best;
475                    data->iMinSAD[0] = s_best;
476    
477                    if(best_halfpel <= s_best2) return;
478    
479                    if(data->currentQMV[0].y == v_best2.y) {
480                            CHECK_CANDIDATE(xo-1, (yo+yo2)>>1, direction);
481                            CHECK_CANDIDATE(xo+1, (yo+yo2)>>1, direction);
482                    } else {
483                            CHECK_CANDIDATE((data->currentQMV[0].y == yo) ? data->currentQMV[0].x : v_best2.x, (yo+yo2)>>1, direction);
484                    }
485                    return;
486            }
487    
488            CHECK_CANDIDATE_2ndBEST(xo, (yo+yo2)>>1, 0);
489            CHECK_CANDIDATE_2ndBEST((xo+xo2)>>1, yo, 0);
490            data->currentQMV[0] = v_best;
491            data->iMinSAD[0] = s_best;
492    
493            if(best_halfpel <= s_best2) return;
494    
495            CHECK_CANDIDATE((xo+xo2)>>1, (yo+yo2)>>1, direction);
496    
497    }
498    
499    /* it's the positive max, so "32" needs fcode of 2, not 1 */
500    unsigned int
501    getMinFcode(const int MVmax)
502    {
503            unsigned int fcode;
504            for (fcode = 1; (16 << fcode) <= MVmax; fcode++);
505            return fcode;
506    }
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