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_config.h"
14 #include "onyx_int.h"
15 #include "modecosts.h"
16 #include "encodeintra.h"
17 #include "vp8/common/common.h"
18 #include "vp8/common/entropymode.h"
19 #include "pickinter.h"
20 #include "vp8/common/findnearmv.h"
21 #include "encodemb.h"
22 #include "vp8/common/reconinter.h"
23 #include "vp8/common/reconintra4x4.h"
24 #include "vp8/common/variance.h"
25 #include "mcomp.h"
26 #include "rdopt.h"
27 #include "vpx_mem/vpx_mem.h"
28 #if CONFIG_TEMPORAL_DENOISING
29 #include "denoising.h"
30 #endif
31
32 extern int VP8_UVSSE(MACROBLOCK *x);
33
34 #ifdef SPEEDSTATS
35 extern unsigned int cnt_pm;
36 #endif
37
38 extern const int vp8_ref_frame_order[MAX_MODES];
39 extern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES];
40
41 extern int vp8_cost_mv_ref(MB_PREDICTION_MODE m, const int near_mv_ref_ct[4]);
42
vp8_skip_fractional_mv_step(MACROBLOCK * mb,BLOCK * b,BLOCKD * d,int_mv * bestmv,int_mv * ref_mv,int error_per_bit,const vp8_variance_fn_ptr_t * vfp,int * mvcost[2],int * distortion,unsigned int * sse)43 int vp8_skip_fractional_mv_step(MACROBLOCK *mb, BLOCK *b, BLOCKD *d,
44 int_mv *bestmv, int_mv *ref_mv,
45 int error_per_bit,
46 const vp8_variance_fn_ptr_t *vfp,
47 int *mvcost[2], int *distortion,
48 unsigned int *sse)
49 {
50 (void) b;
51 (void) d;
52 (void) ref_mv;
53 (void) error_per_bit;
54 (void) vfp;
55 (void) mvcost;
56 (void) distortion;
57 (void) sse;
58 bestmv->as_mv.row <<= 3;
59 bestmv->as_mv.col <<= 3;
60 return 0;
61 }
62
63
vp8_get_inter_mbpred_error(MACROBLOCK * mb,const vp8_variance_fn_ptr_t * vfp,unsigned int * sse,int_mv this_mv)64 int vp8_get_inter_mbpred_error(MACROBLOCK *mb,
65 const vp8_variance_fn_ptr_t *vfp,
66 unsigned int *sse,
67 int_mv this_mv)
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 int pre_stride = mb->e_mbd.pre.y_stride;
75 unsigned char *in_what = mb->e_mbd.pre.y_buffer + d->offset ;
76 int in_what_stride = pre_stride;
77 int xoffset = this_mv.as_mv.col & 7;
78 int yoffset = this_mv.as_mv.row & 7;
79
80 in_what += (this_mv.as_mv.row >> 3) * pre_stride + (this_mv.as_mv.col >> 3);
81
82 if (xoffset | yoffset)
83 {
84 return vfp->svf(in_what, in_what_stride, xoffset, yoffset, what, what_stride, sse);
85 }
86 else
87 {
88 return vfp->vf(what, what_stride, in_what, in_what_stride, sse);
89 }
90
91 }
92
93
vp8_get4x4sse_cs_c(const unsigned char * src_ptr,int source_stride,const unsigned char * ref_ptr,int recon_stride)94 unsigned int vp8_get4x4sse_cs_c
95 (
96 const unsigned char *src_ptr,
97 int source_stride,
98 const unsigned char *ref_ptr,
99 int recon_stride
100 )
101 {
102 int distortion = 0;
103 int r, c;
104
105 for (r = 0; r < 4; r++)
106 {
107 for (c = 0; c < 4; c++)
108 {
109 int diff = src_ptr[c] - ref_ptr[c];
110 distortion += diff * diff;
111 }
112
113 src_ptr += source_stride;
114 ref_ptr += recon_stride;
115 }
116
117 return distortion;
118 }
119
get_prediction_error(BLOCK * be,BLOCKD * b)120 static int get_prediction_error(BLOCK *be, BLOCKD *b)
121 {
122 unsigned char *sptr;
123 unsigned char *dptr;
124 sptr = (*(be->base_src) + be->src);
125 dptr = b->predictor;
126
127 return vp8_get4x4sse_cs(sptr, be->src_stride, dptr, 16);
128
129 }
130
pick_intra4x4block(MACROBLOCK * x,int ib,B_PREDICTION_MODE * best_mode,const int * mode_costs,int * bestrate,int * bestdistortion)131 static int pick_intra4x4block(
132 MACROBLOCK *x,
133 int ib,
134 B_PREDICTION_MODE *best_mode,
135 const int *mode_costs,
136
137 int *bestrate,
138 int *bestdistortion)
139 {
140
141 BLOCKD *b = &x->e_mbd.block[ib];
142 BLOCK *be = &x->block[ib];
143 int dst_stride = x->e_mbd.dst.y_stride;
144 unsigned char *dst = x->e_mbd.dst.y_buffer + b->offset;
145 B_PREDICTION_MODE mode;
146 int best_rd = INT_MAX;
147 int rate;
148 int distortion;
149
150 unsigned char *Above = dst - dst_stride;
151 unsigned char *yleft = dst - 1;
152 unsigned char top_left = Above[-1];
153
154 for (mode = B_DC_PRED; mode <= B_HE_PRED; mode++)
155 {
156 int this_rd;
157
158 rate = mode_costs[mode];
159
160 vp8_intra4x4_predict(Above, yleft, dst_stride, mode,
161 b->predictor, 16, top_left);
162 distortion = get_prediction_error(be, b);
163 this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
164
165 if (this_rd < best_rd)
166 {
167 *bestrate = rate;
168 *bestdistortion = distortion;
169 best_rd = this_rd;
170 *best_mode = mode;
171 }
172 }
173
174 b->bmi.as_mode = *best_mode;
175 vp8_encode_intra4x4block(x, ib);
176 return best_rd;
177 }
178
179
pick_intra4x4mby_modes(MACROBLOCK * mb,int * Rate,int * best_dist)180 static int pick_intra4x4mby_modes
181 (
182 MACROBLOCK *mb,
183 int *Rate,
184 int *best_dist
185 )
186 {
187 MACROBLOCKD *const xd = &mb->e_mbd;
188 int i;
189 int cost = mb->mbmode_cost [xd->frame_type] [B_PRED];
190 int error;
191 int distortion = 0;
192 const int *bmode_costs;
193
194 intra_prediction_down_copy(xd, xd->dst.y_buffer - xd->dst.y_stride + 16);
195
196 bmode_costs = mb->inter_bmode_costs;
197
198 for (i = 0; i < 16; i++)
199 {
200 MODE_INFO *const mic = xd->mode_info_context;
201 const int mis = xd->mode_info_stride;
202
203 B_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
204 int UNINITIALIZED_IS_SAFE(r), UNINITIALIZED_IS_SAFE(d);
205
206 if (mb->e_mbd.frame_type == KEY_FRAME)
207 {
208 const B_PREDICTION_MODE A = above_block_mode(mic, i, mis);
209 const B_PREDICTION_MODE L = left_block_mode(mic, i);
210
211 bmode_costs = mb->bmode_costs[A][L];
212 }
213
214
215 pick_intra4x4block(mb, i, &best_mode, bmode_costs, &r, &d);
216
217 cost += r;
218 distortion += d;
219 mic->bmi[i].as_mode = best_mode;
220
221 /* Break out case where we have already exceeded best so far value
222 * that was passed in
223 */
224 if (distortion > *best_dist)
225 break;
226 }
227
228 *Rate = cost;
229
230 if (i == 16)
231 {
232 *best_dist = distortion;
233 error = RDCOST(mb->rdmult, mb->rddiv, cost, distortion);
234 }
235 else
236 {
237 *best_dist = INT_MAX;
238 error = INT_MAX;
239 }
240
241 return error;
242 }
243
pick_intra_mbuv_mode(MACROBLOCK * mb)244 static void pick_intra_mbuv_mode(MACROBLOCK *mb)
245 {
246
247 MACROBLOCKD *x = &mb->e_mbd;
248 unsigned char *uabove_row = x->dst.u_buffer - x->dst.uv_stride;
249 unsigned char *vabove_row = x->dst.v_buffer - x->dst.uv_stride;
250 unsigned char *usrc_ptr = (mb->block[16].src + *mb->block[16].base_src);
251 unsigned char *vsrc_ptr = (mb->block[20].src + *mb->block[20].base_src);
252 int uvsrc_stride = mb->block[16].src_stride;
253 unsigned char uleft_col[8];
254 unsigned char vleft_col[8];
255 unsigned char utop_left = uabove_row[-1];
256 unsigned char vtop_left = vabove_row[-1];
257 int i, j;
258 int expected_udc;
259 int expected_vdc;
260 int shift;
261 int Uaverage = 0;
262 int Vaverage = 0;
263 int diff;
264 int pred_error[4] = {0, 0, 0, 0}, best_error = INT_MAX;
265 MB_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
266
267
268 for (i = 0; i < 8; i++)
269 {
270 uleft_col[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
271 vleft_col[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
272 }
273
274 if (!x->up_available && !x->left_available)
275 {
276 expected_udc = 128;
277 expected_vdc = 128;
278 }
279 else
280 {
281 shift = 2;
282
283 if (x->up_available)
284 {
285
286 for (i = 0; i < 8; i++)
287 {
288 Uaverage += uabove_row[i];
289 Vaverage += vabove_row[i];
290 }
291
292 shift ++;
293
294 }
295
296 if (x->left_available)
297 {
298 for (i = 0; i < 8; i++)
299 {
300 Uaverage += uleft_col[i];
301 Vaverage += vleft_col[i];
302 }
303
304 shift ++;
305
306 }
307
308 expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
309 expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
310 }
311
312
313 for (i = 0; i < 8; i++)
314 {
315 for (j = 0; j < 8; j++)
316 {
317
318 int predu = uleft_col[i] + uabove_row[j] - utop_left;
319 int predv = vleft_col[i] + vabove_row[j] - vtop_left;
320 int u_p, v_p;
321
322 u_p = usrc_ptr[j];
323 v_p = vsrc_ptr[j];
324
325 if (predu < 0)
326 predu = 0;
327
328 if (predu > 255)
329 predu = 255;
330
331 if (predv < 0)
332 predv = 0;
333
334 if (predv > 255)
335 predv = 255;
336
337
338 diff = u_p - expected_udc;
339 pred_error[DC_PRED] += diff * diff;
340 diff = v_p - expected_vdc;
341 pred_error[DC_PRED] += diff * diff;
342
343
344 diff = u_p - uabove_row[j];
345 pred_error[V_PRED] += diff * diff;
346 diff = v_p - vabove_row[j];
347 pred_error[V_PRED] += diff * diff;
348
349
350 diff = u_p - uleft_col[i];
351 pred_error[H_PRED] += diff * diff;
352 diff = v_p - vleft_col[i];
353 pred_error[H_PRED] += diff * diff;
354
355
356 diff = u_p - predu;
357 pred_error[TM_PRED] += diff * diff;
358 diff = v_p - predv;
359 pred_error[TM_PRED] += diff * diff;
360
361
362 }
363
364 usrc_ptr += uvsrc_stride;
365 vsrc_ptr += uvsrc_stride;
366
367 if (i == 3)
368 {
369 usrc_ptr = (mb->block[18].src + *mb->block[18].base_src);
370 vsrc_ptr = (mb->block[22].src + *mb->block[22].base_src);
371 }
372
373
374
375 }
376
377
378 for (i = DC_PRED; i <= TM_PRED; i++)
379 {
380 if (best_error > pred_error[i])
381 {
382 best_error = pred_error[i];
383 best_mode = (MB_PREDICTION_MODE)i;
384 }
385 }
386
387
388 mb->e_mbd.mode_info_context->mbmi.uv_mode = best_mode;
389
390 }
391
update_mvcount(MACROBLOCK * x,int_mv * best_ref_mv)392 static void update_mvcount(MACROBLOCK *x, int_mv *best_ref_mv)
393 {
394 MACROBLOCKD *xd = &x->e_mbd;
395 /* Split MV modes currently not supported when RD is nopt enabled,
396 * therefore, only need to modify MVcount in NEWMV mode. */
397 if (xd->mode_info_context->mbmi.mode == NEWMV)
398 {
399 x->MVcount[0][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.row -
400 best_ref_mv->as_mv.row) >> 1)]++;
401 x->MVcount[1][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.col -
402 best_ref_mv->as_mv.col) >> 1)]++;
403 }
404 }
405
406
407 #if CONFIG_MULTI_RES_ENCODING
408 static
get_lower_res_motion_info(VP8_COMP * cpi,MACROBLOCKD * xd,int * dissim,int * parent_ref_frame,MB_PREDICTION_MODE * parent_mode,int_mv * parent_ref_mv,int mb_row,int mb_col)409 void get_lower_res_motion_info(VP8_COMP *cpi, MACROBLOCKD *xd, int *dissim,
410 int *parent_ref_frame,
411 MB_PREDICTION_MODE *parent_mode,
412 int_mv *parent_ref_mv, int mb_row, int mb_col)
413 {
414 LOWER_RES_MB_INFO* store_mode_info
415 = ((LOWER_RES_FRAME_INFO*)cpi->oxcf.mr_low_res_mode_info)->mb_info;
416 unsigned int parent_mb_index;
417
418 /* Consider different down_sampling_factor. */
419 {
420 /* TODO: Removed the loop that supports special down_sampling_factor
421 * such as 2, 4, 8. Will revisit it if needed.
422 * Should also try using a look-up table to see if it helps
423 * performance. */
424 int parent_mb_row, parent_mb_col;
425
426 parent_mb_row = mb_row*cpi->oxcf.mr_down_sampling_factor.den
427 /cpi->oxcf.mr_down_sampling_factor.num;
428 parent_mb_col = mb_col*cpi->oxcf.mr_down_sampling_factor.den
429 /cpi->oxcf.mr_down_sampling_factor.num;
430 parent_mb_index = parent_mb_row*cpi->mr_low_res_mb_cols + parent_mb_col;
431 }
432
433 /* Read lower-resolution mode & motion result from memory.*/
434 *parent_ref_frame = store_mode_info[parent_mb_index].ref_frame;
435 *parent_mode = store_mode_info[parent_mb_index].mode;
436 *dissim = store_mode_info[parent_mb_index].dissim;
437
438 /* For highest-resolution encoder, adjust dissim value. Lower its quality
439 * for good performance. */
440 if (cpi->oxcf.mr_encoder_id == (cpi->oxcf.mr_total_resolutions - 1))
441 *dissim>>=1;
442
443 if(*parent_ref_frame != INTRA_FRAME)
444 {
445 /* Consider different down_sampling_factor.
446 * The result can be rounded to be more precise, but it takes more time.
447 */
448 (*parent_ref_mv).as_mv.row = store_mode_info[parent_mb_index].mv.as_mv.row
449 *cpi->oxcf.mr_down_sampling_factor.num
450 /cpi->oxcf.mr_down_sampling_factor.den;
451 (*parent_ref_mv).as_mv.col = store_mode_info[parent_mb_index].mv.as_mv.col
452 *cpi->oxcf.mr_down_sampling_factor.num
453 /cpi->oxcf.mr_down_sampling_factor.den;
454
455 vp8_clamp_mv2(parent_ref_mv, xd);
456 }
457 }
458 #endif
459
check_for_encode_breakout(unsigned int sse,MACROBLOCK * x)460 static void check_for_encode_breakout(unsigned int sse, MACROBLOCK* x)
461 {
462 MACROBLOCKD *xd = &x->e_mbd;
463
464 unsigned int threshold = (xd->block[0].dequant[1]
465 * xd->block[0].dequant[1] >>4);
466
467 if(threshold < x->encode_breakout)
468 threshold = x->encode_breakout;
469
470 if (sse < threshold )
471 {
472 /* Check u and v to make sure skip is ok */
473 unsigned int sse2 = 0;
474
475 sse2 = VP8_UVSSE(x);
476
477 if (sse2 * 2 < x->encode_breakout)
478 x->skip = 1;
479 else
480 x->skip = 0;
481 }
482 }
483
evaluate_inter_mode(unsigned int * sse,int rate2,int * distortion2,VP8_COMP * cpi,MACROBLOCK * x,int rd_adj)484 static int evaluate_inter_mode(unsigned int* sse, int rate2, int* distortion2,
485 VP8_COMP *cpi, MACROBLOCK *x, int rd_adj)
486 {
487 MB_PREDICTION_MODE this_mode = x->e_mbd.mode_info_context->mbmi.mode;
488 int_mv mv = x->e_mbd.mode_info_context->mbmi.mv;
489 int this_rd;
490 /* Exit early and don't compute the distortion if this macroblock
491 * is marked inactive. */
492 if (cpi->active_map_enabled && x->active_ptr[0] == 0)
493 {
494 *sse = 0;
495 *distortion2 = 0;
496 x->skip = 1;
497 return INT_MAX;
498 }
499
500 if((this_mode != NEWMV) ||
501 !(cpi->sf.half_pixel_search) || cpi->common.full_pixel==1)
502 *distortion2 = vp8_get_inter_mbpred_error(x,
503 &cpi->fn_ptr[BLOCK_16X16],
504 sse, mv);
505
506 this_rd = RDCOST(x->rdmult, x->rddiv, rate2, *distortion2);
507
508 /* Adjust rd to bias to ZEROMV */
509 if(this_mode == ZEROMV)
510 {
511 /* Bias to ZEROMV on LAST_FRAME reference when it is available. */
512 if ((cpi->ref_frame_flags & VP8_LAST_FRAME &
513 cpi->common.refresh_last_frame)
514 && x->e_mbd.mode_info_context->mbmi.ref_frame != LAST_FRAME)
515 rd_adj = 100;
516
517 // rd_adj <= 100
518 this_rd = ((int64_t)this_rd) * rd_adj / 100;
519 }
520
521 check_for_encode_breakout(*sse, x);
522 return this_rd;
523 }
524
calculate_zeromv_rd_adjustment(VP8_COMP * cpi,MACROBLOCK * x,int * rd_adjustment)525 static void calculate_zeromv_rd_adjustment(VP8_COMP *cpi, MACROBLOCK *x,
526 int *rd_adjustment)
527 {
528 MODE_INFO *mic = x->e_mbd.mode_info_context;
529 int_mv mv_l, mv_a, mv_al;
530 int local_motion_check = 0;
531
532 if (cpi->lf_zeromv_pct > 40)
533 {
534 /* left mb */
535 mic -= 1;
536 mv_l = mic->mbmi.mv;
537
538 if (mic->mbmi.ref_frame != INTRA_FRAME)
539 if( abs(mv_l.as_mv.row) < 8 && abs(mv_l.as_mv.col) < 8)
540 local_motion_check++;
541
542 /* above-left mb */
543 mic -= x->e_mbd.mode_info_stride;
544 mv_al = mic->mbmi.mv;
545
546 if (mic->mbmi.ref_frame != INTRA_FRAME)
547 if( abs(mv_al.as_mv.row) < 8 && abs(mv_al.as_mv.col) < 8)
548 local_motion_check++;
549
550 /* above mb */
551 mic += 1;
552 mv_a = mic->mbmi.mv;
553
554 if (mic->mbmi.ref_frame != INTRA_FRAME)
555 if( abs(mv_a.as_mv.row) < 8 && abs(mv_a.as_mv.col) < 8)
556 local_motion_check++;
557
558 if (((!x->e_mbd.mb_to_top_edge || !x->e_mbd.mb_to_left_edge)
559 && local_motion_check >0) || local_motion_check >2 )
560 *rd_adjustment = 80;
561 else if (local_motion_check > 0)
562 *rd_adjustment = 90;
563 }
564 }
565
vp8_pick_inter_mode(VP8_COMP * cpi,MACROBLOCK * x,int recon_yoffset,int recon_uvoffset,int * returnrate,int * returndistortion,int * returnintra,int mb_row,int mb_col)566 void vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
567 int recon_uvoffset, int *returnrate,
568 int *returndistortion, int *returnintra, int mb_row,
569 int mb_col)
570 {
571 BLOCK *b = &x->block[0];
572 BLOCKD *d = &x->e_mbd.block[0];
573 MACROBLOCKD *xd = &x->e_mbd;
574 MB_MODE_INFO best_mbmode;
575
576 int_mv best_ref_mv_sb[2];
577 int_mv mode_mv_sb[2][MB_MODE_COUNT];
578 int_mv best_ref_mv;
579 int_mv *mode_mv;
580 MB_PREDICTION_MODE this_mode;
581 int num00;
582 int mdcounts[4];
583 int best_rd = INT_MAX;
584 int rd_adjustment = 100;
585 int best_intra_rd = INT_MAX;
586 int mode_index;
587 int rate;
588 int rate2;
589 int distortion2;
590 int bestsme = INT_MAX;
591 int best_mode_index = 0;
592 unsigned int sse = UINT_MAX, best_rd_sse = UINT_MAX;
593 #if CONFIG_TEMPORAL_DENOISING
594 unsigned int zero_mv_sse = UINT_MAX, best_sse = UINT_MAX;
595 #endif
596
597 int sf_improved_mv_pred = cpi->sf.improved_mv_pred;
598 int_mv mvp;
599
600 int near_sadidx[8] = {0, 1, 2, 3, 4, 5, 6, 7};
601 int saddone=0;
602 /* search range got from mv_pred(). It uses step_param levels. (0-7) */
603 int sr=0;
604
605 unsigned char *plane[4][3];
606 int ref_frame_map[4];
607 int sign_bias = 0;
608
609 #if CONFIG_MULTI_RES_ENCODING
610 int dissim = INT_MAX;
611 int parent_ref_frame = 0;
612 int parent_ref_valid = cpi->oxcf.mr_encoder_id && cpi->mr_low_res_mv_avail;
613 int_mv parent_ref_mv;
614 MB_PREDICTION_MODE parent_mode = 0;
615
616 if (parent_ref_valid)
617 {
618 int parent_ref_flag;
619
620 get_lower_res_motion_info(cpi, xd, &dissim, &parent_ref_frame,
621 &parent_mode, &parent_ref_mv, mb_row, mb_col);
622
623 /* TODO(jkoleszar): The references available (ref_frame_flags) to the
624 * lower res encoder should match those available to this encoder, but
625 * there seems to be a situation where this mismatch can happen in the
626 * case of frame dropping and temporal layers. For example,
627 * GOLD being disallowed in ref_frame_flags, but being returned as
628 * parent_ref_frame.
629 *
630 * In this event, take the conservative approach of disabling the
631 * lower res info for this MB.
632 */
633 parent_ref_flag = 0;
634 if (parent_ref_frame == LAST_FRAME)
635 parent_ref_flag = (cpi->ref_frame_flags & VP8_LAST_FRAME);
636 else if (parent_ref_frame == GOLDEN_FRAME)
637 parent_ref_flag = (cpi->ref_frame_flags & VP8_GOLD_FRAME);
638 else if (parent_ref_frame == ALTREF_FRAME)
639 parent_ref_flag = (cpi->ref_frame_flags & VP8_ALTR_FRAME);
640
641 //assert(!parent_ref_frame || parent_ref_flag);
642 if (parent_ref_frame && !parent_ref_flag)
643 parent_ref_valid = 0;
644 }
645 #endif
646
647 mode_mv = mode_mv_sb[sign_bias];
648 best_ref_mv.as_int = 0;
649 vpx_memset(mode_mv_sb, 0, sizeof(mode_mv_sb));
650 vpx_memset(&best_mbmode, 0, sizeof(best_mbmode));
651
652 /* Setup search priorities */
653 #if CONFIG_MULTI_RES_ENCODING
654 if (parent_ref_valid && parent_ref_frame && dissim < 8)
655 {
656 ref_frame_map[0] = -1;
657 ref_frame_map[1] = parent_ref_frame;
658 ref_frame_map[2] = -1;
659 ref_frame_map[3] = -1;
660 } else
661 #endif
662 get_reference_search_order(cpi, ref_frame_map);
663
664 /* Check to see if there is at least 1 valid reference frame that we need
665 * to calculate near_mvs.
666 */
667 if (ref_frame_map[1] > 0)
668 {
669 sign_bias = vp8_find_near_mvs_bias(&x->e_mbd,
670 x->e_mbd.mode_info_context,
671 mode_mv_sb,
672 best_ref_mv_sb,
673 mdcounts,
674 ref_frame_map[1],
675 cpi->common.ref_frame_sign_bias);
676
677 mode_mv = mode_mv_sb[sign_bias];
678 best_ref_mv.as_int = best_ref_mv_sb[sign_bias].as_int;
679 }
680
681 get_predictor_pointers(cpi, plane, recon_yoffset, recon_uvoffset);
682
683 /* Count of the number of MBs tested so far this frame */
684 x->mbs_tested_so_far++;
685
686 *returnintra = INT_MAX;
687 x->skip = 0;
688
689 x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME;
690
691 /* If the frame has big static background and current MB is in low
692 * motion area, its mode decision is biased to ZEROMV mode.
693 */
694 calculate_zeromv_rd_adjustment(cpi, x, &rd_adjustment);
695
696 #if CONFIG_TEMPORAL_DENOISING
697 if (cpi->oxcf.noise_sensitivity) {
698 rd_adjustment = (int)(rd_adjustment *
699 cpi->denoiser.denoise_pars.pickmode_mv_bias / 100);
700 }
701 #endif
702
703 /* if we encode a new mv this is important
704 * find the best new motion vector
705 */
706 for (mode_index = 0; mode_index < MAX_MODES; mode_index++)
707 {
708 int frame_cost;
709 int this_rd = INT_MAX;
710 int this_ref_frame = ref_frame_map[vp8_ref_frame_order[mode_index]];
711
712 if (best_rd <= x->rd_threshes[mode_index])
713 continue;
714
715 if (this_ref_frame < 0)
716 continue;
717
718 x->e_mbd.mode_info_context->mbmi.ref_frame = this_ref_frame;
719
720 /* everything but intra */
721 if (x->e_mbd.mode_info_context->mbmi.ref_frame)
722 {
723 x->e_mbd.pre.y_buffer = plane[this_ref_frame][0];
724 x->e_mbd.pre.u_buffer = plane[this_ref_frame][1];
725 x->e_mbd.pre.v_buffer = plane[this_ref_frame][2];
726
727 if (sign_bias != cpi->common.ref_frame_sign_bias[this_ref_frame])
728 {
729 sign_bias = cpi->common.ref_frame_sign_bias[this_ref_frame];
730 mode_mv = mode_mv_sb[sign_bias];
731 best_ref_mv.as_int = best_ref_mv_sb[sign_bias].as_int;
732 }
733
734 #if CONFIG_MULTI_RES_ENCODING
735 if (parent_ref_valid)
736 {
737 if (vp8_mode_order[mode_index] == NEARESTMV &&
738 mode_mv[NEARESTMV].as_int ==0)
739 continue;
740 if (vp8_mode_order[mode_index] == NEARMV &&
741 mode_mv[NEARMV].as_int ==0)
742 continue;
743
744 if (vp8_mode_order[mode_index] == NEWMV && parent_mode == ZEROMV
745 && best_ref_mv.as_int==0)
746 continue;
747 else if(vp8_mode_order[mode_index] == NEWMV && dissim==0
748 && best_ref_mv.as_int==parent_ref_mv.as_int)
749 continue;
750 }
751 #endif
752 }
753
754 /* Check to see if the testing frequency for this mode is at its max
755 * If so then prevent it from being tested and increase the threshold
756 * for its testing */
757 if (x->mode_test_hit_counts[mode_index] &&
758 (cpi->mode_check_freq[mode_index] > 1))
759 {
760 if (x->mbs_tested_so_far <= (cpi->mode_check_freq[mode_index] *
761 x->mode_test_hit_counts[mode_index]))
762 {
763 /* Increase the threshold for coding this mode to make it less
764 * likely to be chosen */
765 x->rd_thresh_mult[mode_index] += 4;
766
767 if (x->rd_thresh_mult[mode_index] > MAX_THRESHMULT)
768 x->rd_thresh_mult[mode_index] = MAX_THRESHMULT;
769
770 x->rd_threshes[mode_index] =
771 (cpi->rd_baseline_thresh[mode_index] >> 7) *
772 x->rd_thresh_mult[mode_index];
773 continue;
774 }
775 }
776
777 /* We have now reached the point where we are going to test the current
778 * mode so increment the counter for the number of times it has been
779 * tested */
780 x->mode_test_hit_counts[mode_index] ++;
781
782 rate2 = 0;
783 distortion2 = 0;
784
785 this_mode = vp8_mode_order[mode_index];
786
787 x->e_mbd.mode_info_context->mbmi.mode = this_mode;
788 x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
789
790 /* Work out the cost assosciated with selecting the reference frame */
791 frame_cost =
792 x->ref_frame_cost[x->e_mbd.mode_info_context->mbmi.ref_frame];
793 rate2 += frame_cost;
794
795 /* Only consider ZEROMV/ALTREF_FRAME for alt ref frame,
796 * unless ARNR filtering is enabled in which case we want
797 * an unfiltered alternative */
798 if (cpi->is_src_frame_alt_ref && (cpi->oxcf.arnr_max_frames == 0))
799 {
800 if (this_mode != ZEROMV ||
801 x->e_mbd.mode_info_context->mbmi.ref_frame != ALTREF_FRAME)
802 continue;
803 }
804
805 switch (this_mode)
806 {
807 case B_PRED:
808 /* Pass best so far to pick_intra4x4mby_modes to use as breakout */
809 distortion2 = best_rd_sse;
810 pick_intra4x4mby_modes(x, &rate, &distortion2);
811
812 if (distortion2 == INT_MAX)
813 {
814 this_rd = INT_MAX;
815 }
816 else
817 {
818 rate2 += rate;
819 distortion2 = vp8_variance16x16(
820 *(b->base_src), b->src_stride,
821 x->e_mbd.predictor, 16, &sse);
822 this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
823
824 if (this_rd < best_intra_rd)
825 {
826 best_intra_rd = this_rd;
827 *returnintra = distortion2;
828 }
829 }
830
831 break;
832
833 case SPLITMV:
834
835 /* Split MV modes currently not supported when RD is not enabled. */
836 break;
837
838 case DC_PRED:
839 case V_PRED:
840 case H_PRED:
841 case TM_PRED:
842 vp8_build_intra_predictors_mby_s(xd,
843 xd->dst.y_buffer - xd->dst.y_stride,
844 xd->dst.y_buffer - 1,
845 xd->dst.y_stride,
846 xd->predictor,
847 16);
848 distortion2 = vp8_variance16x16
849 (*(b->base_src), b->src_stride,
850 x->e_mbd.predictor, 16, &sse);
851 rate2 += x->mbmode_cost[x->e_mbd.frame_type][x->e_mbd.mode_info_context->mbmi.mode];
852 this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
853
854 if (this_rd < best_intra_rd)
855 {
856 best_intra_rd = this_rd;
857 *returnintra = distortion2;
858 }
859 break;
860
861 case NEWMV:
862 {
863 int thissme;
864 int step_param;
865 int further_steps;
866 int n = 0;
867 int sadpb = x->sadperbit16;
868 int_mv mvp_full;
869
870 int col_min = ((best_ref_mv.as_mv.col+7)>>3) - MAX_FULL_PEL_VAL;
871 int row_min = ((best_ref_mv.as_mv.row+7)>>3) - MAX_FULL_PEL_VAL;
872 int col_max = (best_ref_mv.as_mv.col>>3)
873 + MAX_FULL_PEL_VAL;
874 int row_max = (best_ref_mv.as_mv.row>>3)
875 + MAX_FULL_PEL_VAL;
876
877 int tmp_col_min = x->mv_col_min;
878 int tmp_col_max = x->mv_col_max;
879 int tmp_row_min = x->mv_row_min;
880 int tmp_row_max = x->mv_row_max;
881
882 int speed_adjust = (cpi->Speed > 5) ? ((cpi->Speed >= 8)? 3 : 2) : 1;
883
884 /* Further step/diamond searches as necessary */
885 step_param = cpi->sf.first_step + speed_adjust;
886
887 #if CONFIG_MULTI_RES_ENCODING
888 /* If lower-res drops this frame, then higher-res encoder does
889 motion search without any previous knowledge. Also, since
890 last frame motion info is not stored, then we can not
891 use improved_mv_pred. */
892 if (cpi->oxcf.mr_encoder_id && !parent_ref_valid)
893 sf_improved_mv_pred = 0;
894
895 if (parent_ref_valid && parent_ref_frame)
896 {
897 /* Use parent MV as predictor. Adjust search range
898 * accordingly.
899 */
900 mvp.as_int = parent_ref_mv.as_int;
901 mvp_full.as_mv.col = parent_ref_mv.as_mv.col>>3;
902 mvp_full.as_mv.row = parent_ref_mv.as_mv.row>>3;
903
904 if(dissim <=32) step_param += 3;
905 else if(dissim <=128) step_param += 2;
906 else step_param += 1;
907 }else
908 #endif
909 {
910 if(sf_improved_mv_pred)
911 {
912 if(!saddone)
913 {
914 vp8_cal_sad(cpi,xd,x, recon_yoffset ,&near_sadidx[0] );
915 saddone = 1;
916 }
917
918 vp8_mv_pred(cpi, &x->e_mbd, x->e_mbd.mode_info_context,
919 &mvp,x->e_mbd.mode_info_context->mbmi.ref_frame,
920 cpi->common.ref_frame_sign_bias, &sr,
921 &near_sadidx[0]);
922
923 sr += speed_adjust;
924 /* adjust search range according to sr from mv prediction */
925 if(sr > step_param)
926 step_param = sr;
927
928 mvp_full.as_mv.col = mvp.as_mv.col>>3;
929 mvp_full.as_mv.row = mvp.as_mv.row>>3;
930 }else
931 {
932 mvp.as_int = best_ref_mv.as_int;
933 mvp_full.as_mv.col = best_ref_mv.as_mv.col>>3;
934 mvp_full.as_mv.row = best_ref_mv.as_mv.row>>3;
935 }
936 }
937
938 #if CONFIG_MULTI_RES_ENCODING
939 if (parent_ref_valid && parent_ref_frame && dissim <= 2 &&
940 MAX(abs(best_ref_mv.as_mv.row - parent_ref_mv.as_mv.row),
941 abs(best_ref_mv.as_mv.col - parent_ref_mv.as_mv.col)) <= 4)
942 {
943 d->bmi.mv.as_int = mvp_full.as_int;
944 mode_mv[NEWMV].as_int = mvp_full.as_int;
945
946 cpi->find_fractional_mv_step(x, b, d, &d->bmi.mv, &best_ref_mv,
947 x->errorperbit,
948 &cpi->fn_ptr[BLOCK_16X16],
949 cpi->mb.mvcost,
950 &distortion2,&sse);
951 }else
952 #endif
953 {
954 /* Get intersection of UMV window and valid MV window to
955 * reduce # of checks in diamond search. */
956 if (x->mv_col_min < col_min )
957 x->mv_col_min = col_min;
958 if (x->mv_col_max > col_max )
959 x->mv_col_max = col_max;
960 if (x->mv_row_min < row_min )
961 x->mv_row_min = row_min;
962 if (x->mv_row_max > row_max )
963 x->mv_row_max = row_max;
964
965 further_steps = (cpi->Speed >= 8)?
966 0: (cpi->sf.max_step_search_steps - 1 - step_param);
967
968 if (cpi->sf.search_method == HEX)
969 {
970 #if CONFIG_MULTI_RES_ENCODING
971 /* TODO: In higher-res pick_inter_mode, step_param is used to
972 * modify hex search range. Here, set step_param to 0 not to
973 * change the behavior in lowest-resolution encoder.
974 * Will improve it later.
975 */
976 /* Set step_param to 0 to ensure large-range motion search
977 when encoder drops this frame at lower-resolution.
978 */
979 if (!parent_ref_valid)
980 step_param = 0;
981 #endif
982 bestsme = vp8_hex_search(x, b, d, &mvp_full, &d->bmi.mv,
983 step_param, sadpb,
984 &cpi->fn_ptr[BLOCK_16X16],
985 x->mvsadcost, x->mvcost, &best_ref_mv);
986 mode_mv[NEWMV].as_int = d->bmi.mv.as_int;
987 }
988 else
989 {
990 bestsme = cpi->diamond_search_sad(x, b, d, &mvp_full,
991 &d->bmi.mv, step_param, sadpb, &num00,
992 &cpi->fn_ptr[BLOCK_16X16],
993 x->mvcost, &best_ref_mv);
994 mode_mv[NEWMV].as_int = d->bmi.mv.as_int;
995
996 /* Further step/diamond searches as necessary */
997 n = num00;
998 num00 = 0;
999
1000 while (n < further_steps)
1001 {
1002 n++;
1003
1004 if (num00)
1005 num00--;
1006 else
1007 {
1008 thissme =
1009 cpi->diamond_search_sad(x, b, d, &mvp_full,
1010 &d->bmi.mv,
1011 step_param + n,
1012 sadpb, &num00,
1013 &cpi->fn_ptr[BLOCK_16X16],
1014 x->mvcost, &best_ref_mv);
1015 if (thissme < bestsme)
1016 {
1017 bestsme = thissme;
1018 mode_mv[NEWMV].as_int = d->bmi.mv.as_int;
1019 }
1020 else
1021 {
1022 d->bmi.mv.as_int = mode_mv[NEWMV].as_int;
1023 }
1024 }
1025 }
1026 }
1027
1028 x->mv_col_min = tmp_col_min;
1029 x->mv_col_max = tmp_col_max;
1030 x->mv_row_min = tmp_row_min;
1031 x->mv_row_max = tmp_row_max;
1032
1033 if (bestsme < INT_MAX)
1034 cpi->find_fractional_mv_step(x, b, d, &d->bmi.mv,
1035 &best_ref_mv, x->errorperbit,
1036 &cpi->fn_ptr[BLOCK_16X16],
1037 cpi->mb.mvcost,
1038 &distortion2,&sse);
1039 }
1040
1041 mode_mv[NEWMV].as_int = d->bmi.mv.as_int;
1042
1043 /* mv cost; */
1044 rate2 += vp8_mv_bit_cost(&mode_mv[NEWMV], &best_ref_mv,
1045 cpi->mb.mvcost, 128);
1046 }
1047
1048 case NEARESTMV:
1049 case NEARMV:
1050
1051 if (mode_mv[this_mode].as_int == 0)
1052 continue;
1053
1054 case ZEROMV:
1055
1056 /* Trap vectors that reach beyond the UMV borders
1057 * Note that ALL New MV, Nearest MV Near MV and Zero MV code drops
1058 * through to this point because of the lack of break statements
1059 * in the previous two cases.
1060 */
1061 if (((mode_mv[this_mode].as_mv.row >> 3) < x->mv_row_min) ||
1062 ((mode_mv[this_mode].as_mv.row >> 3) > x->mv_row_max) ||
1063 ((mode_mv[this_mode].as_mv.col >> 3) < x->mv_col_min) ||
1064 ((mode_mv[this_mode].as_mv.col >> 3) > x->mv_col_max))
1065 continue;
1066
1067 rate2 += vp8_cost_mv_ref(this_mode, mdcounts);
1068 x->e_mbd.mode_info_context->mbmi.mv.as_int =
1069 mode_mv[this_mode].as_int;
1070 this_rd = evaluate_inter_mode(&sse, rate2, &distortion2, cpi, x,
1071 rd_adjustment);
1072
1073 break;
1074 default:
1075 break;
1076 }
1077
1078 #if CONFIG_TEMPORAL_DENOISING
1079 if (cpi->oxcf.noise_sensitivity)
1080 {
1081
1082 /* Store for later use by denoiser. */
1083 if (this_mode == ZEROMV && sse < zero_mv_sse )
1084 {
1085 zero_mv_sse = sse;
1086 x->best_zeromv_reference_frame =
1087 x->e_mbd.mode_info_context->mbmi.ref_frame;
1088 }
1089
1090 /* Store the best NEWMV in x for later use in the denoiser. */
1091 if (x->e_mbd.mode_info_context->mbmi.mode == NEWMV &&
1092 sse < best_sse)
1093 {
1094 best_sse = sse;
1095 x->best_sse_inter_mode = NEWMV;
1096 x->best_sse_mv = x->e_mbd.mode_info_context->mbmi.mv;
1097 x->need_to_clamp_best_mvs =
1098 x->e_mbd.mode_info_context->mbmi.need_to_clamp_mvs;
1099 x->best_reference_frame =
1100 x->e_mbd.mode_info_context->mbmi.ref_frame;
1101 }
1102 }
1103 #endif
1104
1105 if (this_rd < best_rd || x->skip)
1106 {
1107 /* Note index of best mode */
1108 best_mode_index = mode_index;
1109
1110 *returnrate = rate2;
1111 *returndistortion = distortion2;
1112 best_rd_sse = sse;
1113 best_rd = this_rd;
1114 vpx_memcpy(&best_mbmode, &x->e_mbd.mode_info_context->mbmi,
1115 sizeof(MB_MODE_INFO));
1116
1117 /* Testing this mode gave rise to an improvement in best error
1118 * score. Lower threshold a bit for next time
1119 */
1120 x->rd_thresh_mult[mode_index] =
1121 (x->rd_thresh_mult[mode_index] >= (MIN_THRESHMULT + 2)) ?
1122 x->rd_thresh_mult[mode_index] - 2 : MIN_THRESHMULT;
1123 x->rd_threshes[mode_index] =
1124 (cpi->rd_baseline_thresh[mode_index] >> 7) *
1125 x->rd_thresh_mult[mode_index];
1126 }
1127
1128 /* If the mode did not help improve the best error case then raise the
1129 * threshold for testing that mode next time around.
1130 */
1131 else
1132 {
1133 x->rd_thresh_mult[mode_index] += 4;
1134
1135 if (x->rd_thresh_mult[mode_index] > MAX_THRESHMULT)
1136 x->rd_thresh_mult[mode_index] = MAX_THRESHMULT;
1137
1138 x->rd_threshes[mode_index] =
1139 (cpi->rd_baseline_thresh[mode_index] >> 7) *
1140 x->rd_thresh_mult[mode_index];
1141 }
1142
1143 if (x->skip)
1144 break;
1145 }
1146
1147 /* Reduce the activation RD thresholds for the best choice mode */
1148 if ((cpi->rd_baseline_thresh[best_mode_index] > 0) && (cpi->rd_baseline_thresh[best_mode_index] < (INT_MAX >> 2)))
1149 {
1150 int best_adjustment = (x->rd_thresh_mult[best_mode_index] >> 3);
1151
1152 x->rd_thresh_mult[best_mode_index] =
1153 (x->rd_thresh_mult[best_mode_index]
1154 >= (MIN_THRESHMULT + best_adjustment)) ?
1155 x->rd_thresh_mult[best_mode_index] - best_adjustment :
1156 MIN_THRESHMULT;
1157 x->rd_threshes[best_mode_index] =
1158 (cpi->rd_baseline_thresh[best_mode_index] >> 7) *
1159 x->rd_thresh_mult[best_mode_index];
1160 }
1161
1162
1163 {
1164 int this_rdbin = (*returndistortion >> 7);
1165
1166 if (this_rdbin >= 1024)
1167 {
1168 this_rdbin = 1023;
1169 }
1170
1171 x->error_bins[this_rdbin] ++;
1172 }
1173
1174 #if CONFIG_TEMPORAL_DENOISING
1175 if (cpi->oxcf.noise_sensitivity)
1176 {
1177 int block_index = mb_row * cpi->common.mb_cols + mb_col;
1178 if (x->best_sse_inter_mode == DC_PRED)
1179 {
1180 /* No best MV found. */
1181 x->best_sse_inter_mode = best_mbmode.mode;
1182 x->best_sse_mv = best_mbmode.mv;
1183 x->need_to_clamp_best_mvs = best_mbmode.need_to_clamp_mvs;
1184 x->best_reference_frame = best_mbmode.ref_frame;
1185 best_sse = best_rd_sse;
1186 }
1187 x->increase_denoising = 0;
1188 vp8_denoiser_denoise_mb(&cpi->denoiser, x, best_sse, zero_mv_sse,
1189 recon_yoffset, recon_uvoffset,
1190 &cpi->common.lf_info, mb_row, mb_col,
1191 block_index);
1192
1193 /* Reevaluate ZEROMV after denoising. */
1194 if (best_mbmode.ref_frame == INTRA_FRAME &&
1195 x->best_zeromv_reference_frame != INTRA_FRAME)
1196 {
1197 int this_rd = 0;
1198 int this_ref_frame = x->best_zeromv_reference_frame;
1199 rate2 = x->ref_frame_cost[this_ref_frame] +
1200 vp8_cost_mv_ref(ZEROMV, mdcounts);
1201 distortion2 = 0;
1202
1203 /* set up the proper prediction buffers for the frame */
1204 x->e_mbd.mode_info_context->mbmi.ref_frame = this_ref_frame;
1205 x->e_mbd.pre.y_buffer = plane[this_ref_frame][0];
1206 x->e_mbd.pre.u_buffer = plane[this_ref_frame][1];
1207 x->e_mbd.pre.v_buffer = plane[this_ref_frame][2];
1208
1209 x->e_mbd.mode_info_context->mbmi.mode = ZEROMV;
1210 x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
1211 x->e_mbd.mode_info_context->mbmi.mv.as_int = 0;
1212 this_rd = evaluate_inter_mode(&sse, rate2, &distortion2, cpi, x,
1213 rd_adjustment);
1214
1215 if (this_rd < best_rd)
1216 {
1217 vpx_memcpy(&best_mbmode, &x->e_mbd.mode_info_context->mbmi,
1218 sizeof(MB_MODE_INFO));
1219 }
1220 }
1221
1222 }
1223 #endif
1224
1225 if (cpi->is_src_frame_alt_ref &&
1226 (best_mbmode.mode != ZEROMV || best_mbmode.ref_frame != ALTREF_FRAME))
1227 {
1228 x->e_mbd.mode_info_context->mbmi.mode = ZEROMV;
1229 x->e_mbd.mode_info_context->mbmi.ref_frame = ALTREF_FRAME;
1230 x->e_mbd.mode_info_context->mbmi.mv.as_int = 0;
1231 x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED;
1232 x->e_mbd.mode_info_context->mbmi.mb_skip_coeff =
1233 (cpi->common.mb_no_coeff_skip);
1234 x->e_mbd.mode_info_context->mbmi.partitioning = 0;
1235
1236 return;
1237 }
1238
1239 /* set to the best mb mode, this copy can be skip if x->skip since it
1240 * already has the right content */
1241 if (!x->skip)
1242 vpx_memcpy(&x->e_mbd.mode_info_context->mbmi, &best_mbmode,
1243 sizeof(MB_MODE_INFO));
1244
1245 if (best_mbmode.mode <= B_PRED)
1246 {
1247 /* set mode_info_context->mbmi.uv_mode */
1248 pick_intra_mbuv_mode(x);
1249 }
1250
1251 if (sign_bias
1252 != cpi->common.ref_frame_sign_bias[xd->mode_info_context->mbmi.ref_frame])
1253 best_ref_mv.as_int = best_ref_mv_sb[!sign_bias].as_int;
1254
1255 update_mvcount(x, &best_ref_mv);
1256 }
1257
1258
vp8_pick_intra_mode(MACROBLOCK * x,int * rate_)1259 void vp8_pick_intra_mode(MACROBLOCK *x, int *rate_)
1260 {
1261 int error4x4, error16x16 = INT_MAX;
1262 int rate, best_rate = 0, distortion, best_sse;
1263 MB_PREDICTION_MODE mode, best_mode = DC_PRED;
1264 int this_rd;
1265 unsigned int sse;
1266 BLOCK *b = &x->block[0];
1267 MACROBLOCKD *xd = &x->e_mbd;
1268
1269 xd->mode_info_context->mbmi.ref_frame = INTRA_FRAME;
1270
1271 pick_intra_mbuv_mode(x);
1272
1273 for (mode = DC_PRED; mode <= TM_PRED; mode ++)
1274 {
1275 xd->mode_info_context->mbmi.mode = mode;
1276 vp8_build_intra_predictors_mby_s(xd,
1277 xd->dst.y_buffer - xd->dst.y_stride,
1278 xd->dst.y_buffer - 1,
1279 xd->dst.y_stride,
1280 xd->predictor,
1281 16);
1282 distortion = vp8_variance16x16
1283 (*(b->base_src), b->src_stride, xd->predictor, 16, &sse);
1284 rate = x->mbmode_cost[xd->frame_type][mode];
1285 this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
1286
1287 if (error16x16 > this_rd)
1288 {
1289 error16x16 = this_rd;
1290 best_mode = mode;
1291 best_sse = sse;
1292 best_rate = rate;
1293 }
1294 }
1295 xd->mode_info_context->mbmi.mode = best_mode;
1296
1297 error4x4 = pick_intra4x4mby_modes(x, &rate,
1298 &best_sse);
1299 if (error4x4 < error16x16)
1300 {
1301 xd->mode_info_context->mbmi.mode = B_PRED;
1302 best_rate = rate;
1303 }
1304
1305 *rate_ = best_rate;
1306 }
1307