vp8/encoder/pickinter.c

   1 /*
   2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license
   5  *  that can be found in the LICENSE file in the root of the source
   6  *  tree. An additional intellectual property rights grant can be found
   7  *  in the file PATENTS.  All contributing project authors may
   8  *  be found in the AUTHORS file in the root of the source tree.
   9  */
  10
  11
  12 #include <limits.h>
  13 #include "vpx_ports/config.h"
  14 #include "onyx_int.h"
  15 #include "modecosts.h"
  16 #include "encodeintra.h"
  17 #include "entropymode.h"
  18 #include "pickinter.h"
  19 #include "findnearmv.h"
  20 #include "encodemb.h"
  21 #include "reconinter.h"
  22 #include "reconintra.h"
  23 #include "reconintra4x4.h"
  24 #include "g_common.h"
  25 #include "variance.h"
  26 #include "mcomp.h"
  27 #include "rdopt.h"
  28 #include "vpx_mem/vpx_mem.h"
  29
  30 #if CONFIG_RUNTIME_CPU_DETECT
  31 #define IF_RTCD(x) (x)
  32 #else
  33 #define IF_RTCD(x)  NULL
  34 #endif
  35
  36 extern int VP8_UVSSE(MACROBLOCK *x, const vp8_variance_rtcd_vtable_t *rtcd);
  37
  38 #ifdef SPEEDSTATS
  39 extern unsigned int cnt_pm;
  40 #endif
  41
  42 extern const MV_REFERENCE_FRAME vp8_ref_frame_order[MAX_MODES];
  43 extern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES];
  44
  45
  46 extern unsigned int (*vp8_get16x16pred_error)(unsigned char *src_ptr, int src_stride, unsigned char *ref_ptr, int ref_stride);
  47 extern unsigned int (*vp8_get4x4sse_cs)(unsigned char *src_ptr, int  source_stride, unsigned char *ref_ptr, int  recon_stride);
  48 extern int vp8_rd_pick_best_mbsegmentation(VP8_COMP *cpi, MACROBLOCK *x, MV *best_ref_mv, int best_rd, int *, int *, int *, int, int *mvcost[2], int, int fullpixel);
  49 extern int vp8_cost_mv_ref(MB_PREDICTION_MODE m, const int near_mv_ref_ct[4]);
  50 extern void vp8_set_mbmode_and_mvs(MACROBLOCK *x, MB_PREDICTION_MODE mb, MV *mv);
  51
  52
  53 int vp8_skip_fractional_mv_step(MACROBLOCK *mb, BLOCK *b, BLOCKD *d, MV *bestmv, MV *ref_mv, int error_per_bit, const vp8_variance_fn_ptr_t *vfp, int *mvcost[2])
  54 {
  55     (void) b;
  56     (void) d;
  57     (void) ref_mv;
  58     (void) error_per_bit;
  59     (void) vfp;
  60     (void) mvcost;
  61     bestmv->row <<= 3;
  62     bestmv->col <<= 3;
  63     return 0;
  64 }
  65
  66
  67 static int get_inter_mbpred_error(MACROBLOCK *mb, const vp8_variance_fn_ptr_t *vfp, unsigned int *sse)
  68 {
  69
  70     BLOCK *b = &mb->block[0];
  71     BLOCKD *d = &mb->e_mbd.block[0];
  72     unsigned char *what = (*(b->base_src) + b->src);
  73     int what_stride = b->src_stride;
  74     unsigned char *in_what = *(d->base_pre) + d->pre ;
  75     int in_what_stride = d->pre_stride;
  76     int xoffset = d->bmi.mv.as_mv.col & 7;
  77     int yoffset = d->bmi.mv.as_mv.row & 7;
  78
  79     in_what += (d->bmi.mv.as_mv.row >> 3) * d->pre_stride + (d->bmi.mv.as_mv.col >> 3);
  80
  81     if (xoffset | yoffset)
  82     {
  83         return vfp->svf(in_what, in_what_stride, xoffset, yoffset, what, what_stride, sse);
  84     }
  85     else
  86     {
  87         return vfp->vf(what, what_stride, in_what, in_what_stride, sse);
  88     }
  89
  90 }
  91
  92 unsigned int vp8_get16x16pred_error_c
  93 (
  94     const unsigned char *src_ptr,
  95     int src_stride,
  96     const unsigned char *ref_ptr,
  97     int ref_stride,
  98     int max_sad
  99 )
 100 {
 101     unsigned pred_error = 0;
 102     int i, j;
 103     int sum = 0;
 104
 105     for (i = 0; i < 16; i++)
 106     {
 107         int diff;
 108
 109         for (j = 0; j < 16; j++)
 110         {
 111             diff = src_ptr[j] - ref_ptr[j];
 112             sum += diff;
 113             pred_error += diff * diff;
 114         }
 115
 116         src_ptr += src_stride;
 117         ref_ptr += ref_stride;
 118     }
 119
 120     pred_error -= sum * sum / 256;
 121     return pred_error;
 122 }
 123
 124
 125 unsigned int vp8_get4x4sse_cs_c
 126 (
 127     const unsigned char *src_ptr,
 128     int  source_stride,
 129     const unsigned char *ref_ptr,
 130     int  recon_stride,
 131     int max_sad
 132 )
 133 {
 134     int distortion = 0;
 135     int r, c;
 136
 137     for (r = 0; r < 4; r++)
 138     {
 139         for (c = 0; c < 4; c++)
 140         {
 141             int diff = src_ptr[c] - ref_ptr[c];
 142             distortion += diff * diff;
 143         }
 144
 145         src_ptr += source_stride;
 146         ref_ptr += recon_stride;
 147     }
 148
 149     return distortion;
 150 }
 151
 152 static int get_prediction_error(BLOCK *be, BLOCKD *b, const vp8_variance_rtcd_vtable_t *rtcd)
 153 {
 154     unsigned char *sptr;
 155     unsigned char *dptr;
 156     sptr = (*(be->base_src) + be->src);
 157     dptr = b->predictor;
 158
 159     return VARIANCE_INVOKE(rtcd, get4x4sse_cs)(sptr, be->src_stride, dptr, 16, 0x7fffffff);
 160
 161 }
 162
 163 static int pick_intra4x4block(
 164     const VP8_ENCODER_RTCD *rtcd,
 165     MACROBLOCK *x,
 166     BLOCK *be,
 167     BLOCKD *b,
 168     B_PREDICTION_MODE *best_mode,
 169     B_PREDICTION_MODE above,
 170     B_PREDICTION_MODE left,
 171
 172     int *bestrate,
 173     int *bestdistortion)
 174 {
 175     B_PREDICTION_MODE mode;
 176     int best_rd = INT_MAX;       // 1<<30
 177     int rate;
 178     int distortion;
 179     unsigned int *mode_costs;
 180
 181     if (x->e_mbd.frame_type == KEY_FRAME)
 182     {
 183         mode_costs = x->bmode_costs[above][left];
 184     }
 185     else
 186     {
 187         mode_costs = x->inter_bmode_costs;
 188     }
 189
 190     for (mode = B_DC_PRED; mode <= B_HE_PRED /*B_HU_PRED*/; mode++)
 191     {
 192         int this_rd;
 193
 194         rate = mode_costs[mode];
 195         vp8_predict_intra4x4(b, mode, b->predictor);
 196         distortion = get_prediction_error(be, b, &rtcd->variance);
 197         this_rd = RD_ESTIMATE(x->rdmult, x->rddiv, rate, distortion);
 198
 199         if (this_rd < best_rd)
 200         {
 201             *bestrate = rate;
 202             *bestdistortion = distortion;
 203             best_rd = this_rd;
 204             *best_mode = mode;
 205         }
 206     }
 207
 208     b->bmi.mode = (B_PREDICTION_MODE)(*best_mode);
 209     vp8_encode_intra4x4block(rtcd, x, be, b, b->bmi.mode);
 210
 211     return best_rd;
 212 }
 213
 214
 215 int vp8_pick_intra4x4mby_modes(const VP8_ENCODER_RTCD *rtcd, MACROBLOCK *mb, int *Rate, int *best_dist)
 216 {
 217     MACROBLOCKD *const xd = &mb->e_mbd;
 218     int i;
 219     int cost = mb->mbmode_cost [xd->frame_type] [B_PRED];
 220     int error;
 221     int distortion = 0;
 222
 223     vp8_intra_prediction_down_copy(xd);
 224
 225     for (i = 0; i < 16; i++)
 226     {
 227         MODE_INFO *const mic = xd->mode_info_context;
 228         const int mis = xd->mode_info_stride;
 229         const B_PREDICTION_MODE A = vp8_above_bmi(mic, i, mis)->mode;
 230         const B_PREDICTION_MODE L = vp8_left_bmi(mic, i)->mode;
 231         B_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
 232         int UNINITIALIZED_IS_SAFE(r), UNINITIALIZED_IS_SAFE(d);
 233
 234         pick_intra4x4block(rtcd, mb, mb->block + i, xd->block + i,
 235                                &best_mode, A, L, &r, &d);
 236
 237         cost += r;
 238         distortion += d;
 239
 240         mic->bmi[i].mode = xd->block[i].bmi.mode = best_mode;
 241
 242         // Break out case where we have already exceeded best so far value that was bassed in
 243         if (distortion > *best_dist)
 244             break;
 245     }
 246
 247     for (i = 0; i < 16; i++)
 248         xd->block[i].bmi.mv.as_int = 0;
 249
 250     *Rate = cost;
 251
 252     if (i == 16)
 253     {
 254         *best_dist = distortion;
 255         error = RD_ESTIMATE(mb->rdmult, mb->rddiv, cost, distortion);
 256     }
 257     else
 258     {
 259         *best_dist = INT_MAX;
 260         error = INT_MAX;
 261     }
 262
 263     return error;
 264 }
 265
 266 int vp8_pick_intra_mbuv_mode(MACROBLOCK *mb)
 267 {
 268
 269     MACROBLOCKD *x = &mb->e_mbd;
 270     unsigned char *uabove_row = x->dst.u_buffer - x->dst.uv_stride;
 271     unsigned char *vabove_row = x->dst.v_buffer - x->dst.uv_stride;
 272     unsigned char *usrc_ptr = (mb->block[16].src + *mb->block[16].base_src);
 273     unsigned char *vsrc_ptr = (mb->block[20].src + *mb->block[20].base_src);
 274     int uvsrc_stride = mb->block[16].src_stride;
 275     unsigned char uleft_col[8];
 276     unsigned char vleft_col[8];
 277     unsigned char utop_left = uabove_row[-1];
 278     unsigned char vtop_left = vabove_row[-1];
 279     int i, j;
 280     int expected_udc;
 281     int expected_vdc;
 282     int shift;
 283     int Uaverage = 0;
 284     int Vaverage = 0;
 285     int diff;
 286     int pred_error[4] = {0, 0, 0, 0}, best_error = INT_MAX;
 287     MB_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
 288
 289
 290     for (i = 0; i < 8; i++)
 291     {
 292         uleft_col[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
 293         vleft_col[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
 294     }
 295
 296     if (!x->up_available && !x->left_available)
 297     {
 298         expected_udc = 128;
 299         expected_vdc = 128;
 300     }
 301     else
 302     {
 303         shift = 2;
 304
 305         if (x->up_available)
 306         {
 307
 308             for (i = 0; i < 8; i++)
 309             {
 310                 Uaverage += uabove_row[i];
 311                 Vaverage += vabove_row[i];
 312             }
 313
 314             shift ++;
 315
 316         }
 317
 318         if (x->left_available)
 319         {
 320             for (i = 0; i < 8; i++)
 321             {
 322                 Uaverage += uleft_col[i];
 323                 Vaverage += vleft_col[i];
 324             }
 325
 326             shift ++;
 327
 328         }
 329
 330         expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
 331         expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
 332     }
 333
 334
 335     for (i = 0; i < 8; i++)
 336     {
 337         for (j = 0; j < 8; j++)
 338         {
 339
 340             int predu = uleft_col[i] + uabove_row[j] - utop_left;
 341             int predv = vleft_col[i] + vabove_row[j] - vtop_left;
 342             int u_p, v_p;
 343
 344             u_p = usrc_ptr[j];
 345             v_p = vsrc_ptr[j];
 346
 347             if (predu < 0)
 348                 predu = 0;
 349
 350             if (predu > 255)
 351                 predu = 255;
 352
 353             if (predv < 0)
 354                 predv = 0;
 355
 356             if (predv > 255)
 357                 predv = 255;
 358
 359
 360             diff = u_p - expected_udc;
 361             pred_error[DC_PRED] += diff * diff;
 362             diff = v_p - expected_vdc;
 363             pred_error[DC_PRED] += diff * diff;
 364
 365
 366             diff = u_p - uabove_row[j];
 367             pred_error[V_PRED] += diff * diff;
 368             diff = v_p - vabove_row[j];
 369             pred_error[V_PRED] += diff * diff;
 370
 371
 372             diff = u_p - uleft_col[i];
 373             pred_error[H_PRED] += diff * diff;
 374             diff = v_p - vleft_col[i];
 375             pred_error[H_PRED] += diff * diff;
 376
 377
 378             diff = u_p - predu;
 379             pred_error[TM_PRED] += diff * diff;
 380             diff = v_p - predv;
 381             pred_error[TM_PRED] += diff * diff;
 382
 383
 384         }
 385
 386         usrc_ptr += uvsrc_stride;
 387         vsrc_ptr += uvsrc_stride;
 388
 389         if (i == 3)
 390         {
 391             usrc_ptr = (mb->block[18].src + *mb->block[18].base_src);
 392             vsrc_ptr = (mb->block[22].src + *mb->block[22].base_src);
 393         }
 394
 395
 396
 397     }
 398
 399
 400     for (i = DC_PRED; i <= TM_PRED; i++)
 401     {
 402         if (best_error > pred_error[i])
 403         {
 404             best_error = pred_error[i];
 405             best_mode = (MB_PREDICTION_MODE)i;
 406         }
 407     }
 408
 409
 410     mb->e_mbd.mode_info_context->mbmi.uv_mode = best_mode;
 411     return best_error;
 412
 413 }
 414
 415 int vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset, int recon_uvoffset, int *returnrate, int *returndistortion, int *returnintra)
 416 {
 417     BLOCK *b = &x->block[0];
 418     BLOCKD *d = &x->e_mbd.block[0];
 419     MACROBLOCKD *xd = &x->e_mbd;
 420     B_MODE_INFO best_bmodes[16];
 421     MB_MODE_INFO best_mbmode;
 422     PARTITION_INFO best_partition;
 423     MV best_ref_mv;
 424     MV mode_mv[MB_MODE_COUNT];
 425     MB_PREDICTION_MODE this_mode;
 426     int num00;
 427     int i;
 428     int mdcounts[4];
 429     int best_rd = INT_MAX; // 1 << 30;
 430     int best_intra_rd = INT_MAX;
 431     int mode_index;
 432     int ref_frame_cost[MAX_REF_FRAMES];
 433     int rate;
 434     int rate2;
 435     int distortion2;
 436     int bestsme;
 437     //int all_rds[MAX_MODES];         // Experimental debug code.
 438     int best_mode_index = 0;
 439     int sse = INT_MAX;
 440
 441     MV mvp;
 442     int near_sadidx[8] = {0, 1, 2, 3, 4, 5, 6, 7};
 443     int saddone=0;
 444     int sr=0;    //search range got from mv_pred(). It uses step_param levels. (0-7)
 445
 446     MV nearest_mv[4];
 447     MV near_mv[4];
 448     MV frame_best_ref_mv[4];
 449     int MDCounts[4][4];
 450     unsigned char *y_buffer[4];
 451     unsigned char *u_buffer[4];
 452     unsigned char *v_buffer[4];
 453
 454     int skip_mode[4] = {0, 0, 0, 0};
 455
 456     vpx_memset(mode_mv, 0, sizeof(mode_mv));
 457     vpx_memset(nearest_mv, 0, sizeof(nearest_mv));
 458     vpx_memset(near_mv, 0, sizeof(near_mv));
 459     vpx_memset(&best_mbmode, 0, sizeof(best_mbmode));
 460
 461
 462     // set up all the refframe dependent pointers.
 463     if (cpi->ref_frame_flags & VP8_LAST_FLAG)
 464     {
 465         YV12_BUFFER_CONFIG *lst_yv12 = &cpi->common.yv12_fb[cpi->common.lst_fb_idx];
 466
 467         vp8_find_near_mvs(&x->e_mbd, x->e_mbd.mode_info_context, &nearest_mv[LAST_FRAME], &near_mv[LAST_FRAME],
 468                           &frame_best_ref_mv[LAST_FRAME], MDCounts[LAST_FRAME], LAST_FRAME, cpi->common.ref_frame_sign_bias);
 469
 470         y_buffer[LAST_FRAME] = lst_yv12->y_buffer + recon_yoffset;
 471         u_buffer[LAST_FRAME] = lst_yv12->u_buffer + recon_uvoffset;
 472         v_buffer[LAST_FRAME] = lst_yv12->v_buffer + recon_uvoffset;
 473     }
 474     else
 475         skip_mode[LAST_FRAME] = 1;
 476
 477     if (cpi->ref_frame_flags & VP8_GOLD_FLAG)
 478     {
 479         YV12_BUFFER_CONFIG *gld_yv12 = &cpi->common.yv12_fb[cpi->common.gld_fb_idx];
 480
 481         vp8_find_near_mvs(&x->e_mbd, x->e_mbd.mode_info_context, &nearest_mv[GOLDEN_FRAME], &near_mv[GOLDEN_FRAME],
 482                           &frame_best_ref_mv[GOLDEN_FRAME], MDCounts[GOLDEN_FRAME], GOLDEN_FRAME, cpi->common.ref_frame_sign_bias);
 483
 484         y_buffer[GOLDEN_FRAME] = gld_yv12->y_buffer + recon_yoffset;
 485         u_buffer[GOLDEN_FRAME] = gld_yv12->u_buffer + recon_uvoffset;
 486         v_buffer[GOLDEN_FRAME] = gld_yv12->v_buffer + recon_uvoffset;
 487     }
 488     else
 489         skip_mode[GOLDEN_FRAME] = 1;
 490
 491     if (cpi->ref_frame_flags & VP8_ALT_FLAG && cpi->source_alt_ref_active)
 492     {
 493         YV12_BUFFER_CONFIG *alt_yv12 = &cpi->common.yv12_fb[cpi->common.alt_fb_idx];
 494
 495         vp8_find_near_mvs(&x->e_mbd, x->e_mbd.mode_info_context, &nearest_mv[ALTREF_FRAME], &near_mv[ALTREF_FRAME],
 496                           &frame_best_ref_mv[ALTREF_FRAME], MDCounts[ALTREF_FRAME], ALTREF_FRAME, cpi->common.ref_frame_sign_bias);
 497
 498         y_buffer[ALTREF_FRAME] = alt_yv12->y_buffer + recon_yoffset;
 499         u_buffer[ALTREF_FRAME] = alt_yv12->u_buffer + recon_uvoffset;
 500         v_buffer[ALTREF_FRAME] = alt_yv12->v_buffer + recon_uvoffset;
 501     }
 502     else
 503         skip_mode[ALTREF_FRAME] = 1;
 504
 505     cpi->mbs_tested_so_far++;          // Count of the number of MBs tested so far this frame
 506
 507     *returnintra = best_intra_rd;
 508     x->skip = 0;
 509
 510     ref_frame_cost[INTRA_FRAME]   = vp8_cost_zero(cpi->prob_intra_coded);
 511
 512     // Special case treatment when GF and ARF are not sensible options for reference
 513     if (cpi->ref_frame_flags == VP8_LAST_FLAG)
 514     {
 515         ref_frame_cost[LAST_FRAME]    = vp8_cost_one(cpi->prob_intra_coded)
 516                                         + vp8_cost_zero(255);
 517         ref_frame_cost[GOLDEN_FRAME]  = vp8_cost_one(cpi->prob_intra_coded)
 518                                         + vp8_cost_one(255)
 519                                         + vp8_cost_zero(128);
 520         ref_frame_cost[ALTREF_FRAME]  = vp8_cost_one(cpi->prob_intra_coded)
 521                                         + vp8_cost_one(255)
 522                                         + vp8_cost_one(128);
 523     }
 524     else
 525     {
 526         ref_frame_cost[LAST_FRAME]    = vp8_cost_one(cpi->prob_intra_coded)
 527                                         + vp8_cost_zero(cpi->prob_last_coded);
 528         ref_frame_cost[GOLDEN_FRAME]  = vp8_cost_one(cpi->prob_intra_coded)
 529                                         + vp8_cost_one(cpi->prob_last_coded)
 530                                         + vp8_cost_zero(cpi->prob_gf_coded);
 531         ref_frame_cost[ALTREF_FRAME]  = vp8_cost_one(cpi->prob_intra_coded)
 532                                         + vp8_cost_one(cpi->prob_last_coded)
 533                                         + vp8_cost_one(cpi->prob_gf_coded);
 534     }
 535
 536     x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
 537
 538     // if we encode a new mv this is important
 539     // find the best new motion vector
 540     for (mode_index = 0; mode_index < MAX_MODES; mode_index++)
 541     {
 542         int frame_cost;
 543         int this_rd = INT_MAX;
 544
 545         if (best_rd <= cpi->rd_threshes[mode_index])
 546             continue;
 547
 548         x->e_mbd.mode_info_context->mbmi.ref_frame = vp8_ref_frame_order[mode_index];
 549
 550         if (skip_mode[x->e_mbd.mode_info_context->mbmi.ref_frame])
 551             continue;
 552
 553         // Check to see if the testing frequency for this mode is at its max
 554         // If so then prevent it from being tested and increase the threshold for its testing
 555         if (cpi->mode_test_hit_counts[mode_index] && (cpi->mode_check_freq[mode_index] > 1))
 556         {
 557             //if ( (cpi->mbs_tested_so_far / cpi->mode_test_hit_counts[mode_index]) <= cpi->mode_check_freq[mode_index] )
 558             if (cpi->mbs_tested_so_far <= (cpi->mode_check_freq[mode_index] * cpi->mode_test_hit_counts[mode_index]))
 559             {
 560                 // Increase the threshold for coding this mode to make it less likely to be chosen
 561                 cpi->rd_thresh_mult[mode_index] += 4;
 562
 563                 if (cpi->rd_thresh_mult[mode_index] > MAX_THRESHMULT)
 564                     cpi->rd_thresh_mult[mode_index] = MAX_THRESHMULT;
 565
 566                 cpi->rd_threshes[mode_index] = (cpi->rd_baseline_thresh[mode_index] >> 7) * cpi->rd_thresh_mult[mode_index];
 567
 568                 continue;
 569             }
 570         }
 571
 572         // We have now reached the point where we are going to test the current mode so increment the counter for the number of times it has been tested
 573         cpi->mode_test_hit_counts[mode_index] ++;
 574
 575         rate2 = 0;
 576         distortion2 = 0;
 577
 578         this_mode = vp8_mode_order[mode_index];
 579
 580         // Experimental debug code.
 581         //all_rds[mode_index] = -1;
 582
 583         x->e_mbd.mode_info_context->mbmi.mode = this_mode;
 584         x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
 585
 586         // Work out the cost assosciated with selecting the reference frame
 587         frame_cost = ref_frame_cost[x->e_mbd.mode_info_context->mbmi.ref_frame];
 588         rate2 += frame_cost;
 589
 590         // everything but intra
 591         if (x->e_mbd.mode_info_context->mbmi.ref_frame)
 592         {
 593             x->e_mbd.pre.y_buffer = y_buffer[x->e_mbd.mode_info_context->mbmi.ref_frame];
 594             x->e_mbd.pre.u_buffer = u_buffer[x->e_mbd.mode_info_context->mbmi.ref_frame];
 595             x->e_mbd.pre.v_buffer = v_buffer[x->e_mbd.mode_info_context->mbmi.ref_frame];
 596             mode_mv[NEARESTMV] = nearest_mv[x->e_mbd.mode_info_context->mbmi.ref_frame];
 597             mode_mv[NEARMV] = near_mv[x->e_mbd.mode_info_context->mbmi.ref_frame];
 598             best_ref_mv = frame_best_ref_mv[x->e_mbd.mode_info_context->mbmi.ref_frame];
 599             memcpy(mdcounts, MDCounts[x->e_mbd.mode_info_context->mbmi.ref_frame], sizeof(mdcounts));
 600         }
 601
 602         // Only consider ZEROMV/ALTREF_FRAME for alt ref frame,
 603         // unless ARNR filtering is enabled in which case we want
 604         // an unfiltered alternative
 605         if (cpi->is_src_frame_alt_ref && (cpi->oxcf.arnr_max_frames == 0))
 606         {
 607             if (this_mode != ZEROMV || x->e_mbd.mode_info_context->mbmi.ref_frame != ALTREF_FRAME)
 608                 continue;
 609         }
 610
 611         if(cpi->sf.improved_mv_pred && x->e_mbd.mode_info_context->mbmi.mode == NEWMV)
 612         {
 613             if(!saddone)
 614             {
 615                 vp8_cal_sad(cpi,xd,x, recon_yoffset ,&near_sadidx[0] );
 616                 saddone = 1;
 617             }
 618
 619             vp8_mv_pred(cpi, &x->e_mbd, x->e_mbd.mode_info_context, &mvp,
 620                         x->e_mbd.mode_info_context->mbmi.ref_frame, cpi->common.ref_frame_sign_bias, &sr, &near_sadidx[0]);
 621
 622             /* adjust mvp to make sure it is within MV range */
 623             if(mvp.row > best_ref_mv.row + MAX_FULL_PEL_VAL)
 624                 mvp.row = best_ref_mv.row + MAX_FULL_PEL_VAL;
 625             else if(mvp.row < best_ref_mv.row - MAX_FULL_PEL_VAL)
 626                 mvp.row = best_ref_mv.row - MAX_FULL_PEL_VAL;
 627             if(mvp.col > best_ref_mv.col + MAX_FULL_PEL_VAL)
 628                 mvp.col = best_ref_mv.col + MAX_FULL_PEL_VAL;
 629             else if(mvp.col < best_ref_mv.col - MAX_FULL_PEL_VAL)
 630                 mvp.col = best_ref_mv.col - MAX_FULL_PEL_VAL;
 631         }
 632
 633         switch (this_mode)
 634         {
 635         case B_PRED:
 636             distortion2 = *returndistortion;                    // Best so far passed in as breakout value to vp8_pick_intra4x4mby_modes
 637             vp8_pick_intra4x4mby_modes(IF_RTCD(&cpi->rtcd), x, &rate, &distortion2);
 638             rate2 += rate;
 639             distortion2 = VARIANCE_INVOKE(&cpi->rtcd.variance, get16x16prederror)(x->src.y_buffer, x->src.y_stride, x->e_mbd.predictor, 16, 0x7fffffff);
 640
 641             if (distortion2 == INT_MAX)
 642             {
 643                 this_rd = INT_MAX;
 644             }
 645             else
 646             {
 647                 this_rd = RD_ESTIMATE(x->rdmult, x->rddiv, rate2, distortion2);
 648
 649                 if (this_rd < best_intra_rd)
 650                 {
 651                     best_intra_rd = this_rd;
 652                     *returnintra = best_intra_rd ;
 653                 }
 654             }
 655
 656             break;
 657
 658         case SPLITMV:
 659
 660             // Split MV modes currently not supported when RD is nopt enabled.
 661             break;
 662
 663         case DC_PRED:
 664         case V_PRED:
 665         case H_PRED:
 666         case TM_PRED:
 667             vp8_build_intra_predictors_mby_ptr(&x->e_mbd);
 668             distortion2 = VARIANCE_INVOKE(&cpi->rtcd.variance, get16x16prederror)(x->src.y_buffer, x->src.y_stride, x->e_mbd.predictor, 16, 0x7fffffff);
 669             rate2 += x->mbmode_cost[x->e_mbd.frame_type][x->e_mbd.mode_info_context->mbmi.mode];
 670             this_rd = RD_ESTIMATE(x->rdmult, x->rddiv, rate2, distortion2);
 671
 672             if (this_rd < best_intra_rd)
 673             {
 674                 best_intra_rd = this_rd;
 675                 *returnintra = best_intra_rd ;
 676             }
 677
 678             break;
 679
 680         case NEWMV:
 681         {
 682             int thissme;
 683             int step_param;
 684             int further_steps;
 685             int n = 0;
 686             int sadpb = x->sadperbit16;
 687
 688             int col_min;
 689             int col_max;
 690             int row_min;
 691             int row_max;
 692
 693             int tmp_col_min = x->mv_col_min;
 694             int tmp_col_max = x->mv_col_max;
 695             int tmp_row_min = x->mv_row_min;
 696             int tmp_row_max = x->mv_row_max;
 697
 698             int speed_adjust = (cpi->Speed > 5) ? ((cpi->Speed >= 8)? 3 : 2) : 1;
 699
 700             // Further step/diamond searches as necessary
 701             step_param = cpi->sf.first_step + speed_adjust;
 702
 703             if(cpi->sf.improved_mv_pred)
 704             {
 705                 sr += speed_adjust;
 706                 //adjust search range according to sr from mv prediction
 707                 if(sr > step_param)
 708                     step_param = sr;
 709
 710                 col_min = (best_ref_mv.col - MAX_FULL_PEL_VAL) >>3;
 711                 col_max = (best_ref_mv.col + MAX_FULL_PEL_VAL) >>3;
 712                 row_min = (best_ref_mv.row - MAX_FULL_PEL_VAL) >>3;
 713                 row_max = (best_ref_mv.row + MAX_FULL_PEL_VAL) >>3;
 714
 715                 // Get intersection of UMV window and valid MV window to reduce # of checks in diamond search.
 716                 if (x->mv_col_min < col_min )
 717                     x->mv_col_min = col_min;
 718                 if (x->mv_col_max > col_max )
 719                     x->mv_col_max = col_max;
 720                 if (x->mv_row_min < row_min )
 721                     x->mv_row_min = row_min;
 722                 if (x->mv_row_max > row_max )
 723                     x->mv_row_max = row_max;
 724             }else
 725             {
 726                 mvp.row = best_ref_mv.row;
 727                 mvp.col = best_ref_mv.col;
 728             }
 729
 730             further_steps = (cpi->Speed >= 8)? 0: (cpi->sf.max_step_search_steps - 1 - step_param);
 731
 732             if (cpi->sf.search_method == HEX)
 733             {
 734                 bestsme = vp8_hex_search(x, b, d, &mvp, &d->bmi.mv.as_mv, step_param, sadpb/*x->errorperbit*/, &num00, &cpi->fn_ptr[BLOCK_16X16], x->mvsadcost, x->mvcost, &best_ref_mv);
 735                 mode_mv[NEWMV].row = d->bmi.mv.as_mv.row;
 736                 mode_mv[NEWMV].col = d->bmi.mv.as_mv.col;
 737             }
 738             else
 739             {
 740                 bestsme = cpi->diamond_search_sad(x, b, d, &mvp, &d->bmi.mv.as_mv, step_param, sadpb / 2/*x->errorperbit*/, &num00, &cpi->fn_ptr[BLOCK_16X16], x->mvsadcost, x->mvcost, &best_ref_mv); //sadpb < 9
 741                 mode_mv[NEWMV].row = d->bmi.mv.as_mv.row;
 742                 mode_mv[NEWMV].col = d->bmi.mv.as_mv.col;
 743
 744                 // Further step/diamond searches as necessary
 745                 n = 0;
 746                 //further_steps = (cpi->sf.max_step_search_steps - 1) - step_param;
 747
 748                 n = num00;
 749                 num00 = 0;
 750
 751                 while (n < further_steps)
 752                 {
 753                     n++;
 754
 755                     if (num00)
 756                         num00--;
 757                     else
 758                     {
 759                         thissme = cpi->diamond_search_sad(x, b, d, &mvp, &d->bmi.mv.as_mv, step_param + n, sadpb / 4/*x->errorperbit*/, &num00, &cpi->fn_ptr[BLOCK_16X16], x->mvsadcost, x->mvcost, &best_ref_mv); //sadpb = 9
 760
 761                         if (thissme < bestsme)
 762                         {
 763                             bestsme = thissme;
 764                             mode_mv[NEWMV].row = d->bmi.mv.as_mv.row;
 765                             mode_mv[NEWMV].col = d->bmi.mv.as_mv.col;
 766                         }
 767                         else
 768                         {
 769                             d->bmi.mv.as_mv.row = mode_mv[NEWMV].row;
 770                             d->bmi.mv.as_mv.col = mode_mv[NEWMV].col;
 771                         }
 772                     }
 773                 }
 774             }
 775
 776             if(cpi->sf.improved_mv_pred)
 777             {
 778                 x->mv_col_min = tmp_col_min;
 779                 x->mv_col_max = tmp_col_max;
 780                 x->mv_row_min = tmp_row_min;
 781                 x->mv_row_max = tmp_row_max;
 782             }
 783
 784             if (bestsme < INT_MAX)
 785                 cpi->find_fractional_mv_step(x, b, d, &d->bmi.mv.as_mv, &best_ref_mv, x->errorperbit, &cpi->fn_ptr[BLOCK_16X16], cpi->mb.mvcost);
 786
 787             mode_mv[NEWMV].row = d->bmi.mv.as_mv.row;
 788             mode_mv[NEWMV].col = d->bmi.mv.as_mv.col;
 789
 790             // mv cost;
 791             rate2 += vp8_mv_bit_cost(&mode_mv[NEWMV], &best_ref_mv, cpi->mb.mvcost, 128);
 792         }
 793
 794         case NEARESTMV:
 795         case NEARMV:
 796
 797             if (mode_mv[this_mode].row == 0 && mode_mv[this_mode].col == 0)
 798                 continue;
 799
 800         case ZEROMV:
 801
 802             // Trap vectors that reach beyond the UMV borders
 803             // Note that ALL New MV, Nearest MV Near MV and Zero MV code drops through to this point
 804             // because of the lack of break statements in the previous two cases.
 805             if (((mode_mv[this_mode].row >> 3) < x->mv_row_min) || ((mode_mv[this_mode].row >> 3) > x->mv_row_max) ||
 806                 ((mode_mv[this_mode].col >> 3) < x->mv_col_min) || ((mode_mv[this_mode].col >> 3) > x->mv_col_max))
 807                 continue;
 808
 809             rate2 += vp8_cost_mv_ref(this_mode, mdcounts);
 810             x->e_mbd.mode_info_context->mbmi.mode = this_mode;
 811             x->e_mbd.mode_info_context->mbmi.mv.as_mv = mode_mv[this_mode];
 812             x->e_mbd.block[0].bmi.mode = this_mode;
 813             x->e_mbd.block[0].bmi.mv.as_int = x->e_mbd.mode_info_context->mbmi.mv.as_int;
 814
 815             distortion2 = get_inter_mbpred_error(x, &cpi->fn_ptr[BLOCK_16X16], (unsigned int *)(&sse));
 816
 817             this_rd = RD_ESTIMATE(x->rdmult, x->rddiv, rate2, distortion2);
 818
 819             if (cpi->active_map_enabled && x->active_ptr[0] == 0)
 820             {
 821                 x->skip = 1;
 822             }
 823             else if (sse < x->encode_breakout)
 824             {
 825                 // Check u and v to make sure skip is ok
 826                 int sse2 = 0;
 827
 828                 sse2 = VP8_UVSSE(x, IF_RTCD(&cpi->rtcd.variance));
 829
 830                 if (sse2 * 2 < x->encode_breakout)
 831                     x->skip = 1;
 832                 else
 833                     x->skip = 0;
 834             }
 835
 836             break;
 837         default:
 838             break;
 839         }
 840
 841         // Experimental debug code.
 842         //all_rds[mode_index] = this_rd;
 843
 844         if (this_rd < best_rd || x->skip)
 845         {
 846             // Note index of best mode
 847             best_mode_index = mode_index;
 848
 849             *returnrate = rate2;
 850             *returndistortion = distortion2;
 851             best_rd = this_rd;
 852             vpx_memcpy(&best_mbmode, &x->e_mbd.mode_info_context->mbmi, sizeof(MB_MODE_INFO));
 853             vpx_memcpy(&best_partition, x->partition_info, sizeof(PARTITION_INFO));
 854
 855             if (this_mode == B_PRED || this_mode == SPLITMV)
 856                 for (i = 0; i < 16; i++)
 857                 {
 858                     vpx_memcpy(&best_bmodes[i], &x->e_mbd.block[i].bmi, sizeof(B_MODE_INFO));
 859                 }
 860             else
 861             {
 862                 best_bmodes[0].mv = x->e_mbd.block[0].bmi.mv;
 863             }
 864
 865             // Testing this mode gave rise to an improvement in best error score. Lower threshold a bit for next time
 866             cpi->rd_thresh_mult[mode_index] = (cpi->rd_thresh_mult[mode_index] >= (MIN_THRESHMULT + 2)) ? cpi->rd_thresh_mult[mode_index] - 2 : MIN_THRESHMULT;
 867             cpi->rd_threshes[mode_index] = (cpi->rd_baseline_thresh[mode_index] >> 7) * cpi->rd_thresh_mult[mode_index];
 868         }
 869
 870         // If the mode did not help improve the best error case then raise the threshold for testing that mode next time around.
 871         else
 872         {
 873             cpi->rd_thresh_mult[mode_index] += 4;
 874
 875             if (cpi->rd_thresh_mult[mode_index] > MAX_THRESHMULT)
 876                 cpi->rd_thresh_mult[mode_index] = MAX_THRESHMULT;
 877
 878             cpi->rd_threshes[mode_index] = (cpi->rd_baseline_thresh[mode_index] >> 7) * cpi->rd_thresh_mult[mode_index];
 879         }
 880
 881         if (x->skip)
 882             break;
 883     }
 884
 885     // Reduce the activation RD thresholds for the best choice mode
 886     if ((cpi->rd_baseline_thresh[best_mode_index] > 0) && (cpi->rd_baseline_thresh[best_mode_index] < (INT_MAX >> 2)))
 887     {
 888         int best_adjustment = (cpi->rd_thresh_mult[best_mode_index] >> 3);
 889
 890         cpi->rd_thresh_mult[best_mode_index] = (cpi->rd_thresh_mult[best_mode_index] >= (MIN_THRESHMULT + best_adjustment)) ? cpi->rd_thresh_mult[best_mode_index] - best_adjustment : MIN_THRESHMULT;
 891         cpi->rd_threshes[best_mode_index] = (cpi->rd_baseline_thresh[best_mode_index] >> 7) * cpi->rd_thresh_mult[best_mode_index];
 892     }
 893
 894     // Keep a record of best mode index for use in next loop
 895     cpi->last_best_mode_index = best_mode_index;
 896
 897     if (best_mbmode.mode <= B_PRED)
 898     {
 899         x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
 900         vp8_pick_intra_mbuv_mode(x);
 901         best_mbmode.uv_mode = x->e_mbd.mode_info_context->mbmi.uv_mode;
 902     }
 903
 904
 905     {
 906         int this_rdbin = (*returndistortion >> 7);
 907
 908         if (this_rdbin >= 1024)
 909         {
 910             this_rdbin = 1023;
 911         }
 912
 913         cpi->error_bins[this_rdbin] ++;
 914     }
 915
 916
 917     if (cpi->is_src_frame_alt_ref && (best_mbmode.mode != ZEROMV || best_mbmode.ref_frame != ALTREF_FRAME))
 918     {
 919         best_mbmode.mode = ZEROMV;
 920         best_mbmode.ref_frame = ALTREF_FRAME;
 921         best_mbmode.mv.as_int = 0;
 922         best_mbmode.uv_mode = 0;
 923         best_mbmode.mb_skip_coeff = (cpi->common.mb_no_coeff_skip) ? 1 : 0;
 924         best_mbmode.partitioning = 0;
 925         best_mbmode.dc_diff = 0;
 926
 927         vpx_memcpy(&x->e_mbd.mode_info_context->mbmi, &best_mbmode, sizeof(MB_MODE_INFO));
 928         vpx_memcpy(x->partition_info, &best_partition, sizeof(PARTITION_INFO));
 929
 930         for (i = 0; i < 16; i++)
 931         {
 932             vpx_memset(&x->e_mbd.block[i].bmi, 0, sizeof(B_MODE_INFO));
 933         }
 934
 935         x->e_mbd.mode_info_context->mbmi.mv.as_int = 0;
 936
 937         return best_rd;
 938     }
 939
 940
 941     // macroblock modes
 942     vpx_memcpy(&x->e_mbd.mode_info_context->mbmi, &best_mbmode, sizeof(MB_MODE_INFO));
 943     vpx_memcpy(x->partition_info, &best_partition, sizeof(PARTITION_INFO));
 944
 945     if (x->e_mbd.mode_info_context->mbmi.mode == B_PRED || x->e_mbd.mode_info_context->mbmi.mode == SPLITMV)
 946         for (i = 0; i < 16; i++)
 947         {
 948             vpx_memcpy(&x->e_mbd.block[i].bmi, &best_bmodes[i], sizeof(B_MODE_INFO));
 949
 950         }
 951     else
 952     {
 953         vp8_set_mbmode_and_mvs(x, x->e_mbd.mode_info_context->mbmi.mode, &best_bmodes[0].mv.as_mv);
 954     }
 955
 956     x->e_mbd.mode_info_context->mbmi.mv.as_mv = x->e_mbd.block[15].bmi.mv.as_mv;
 957
 958     return best_rd;
 959 }