vp9_pickmode.c 30.7 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
/*
 *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include <assert.h>
12
13
14
#include <limits.h>
#include <math.h>
#include <stdio.h>
15

16
17
18
19
#include "./vp9_rtcd.h"

#include "vpx_mem/vpx_mem.h"

20
#include "vp9/common/vp9_blockd.h"
21
22
#include "vp9/common/vp9_common.h"
#include "vp9/common/vp9_mvref_common.h"
23
24
#include "vp9/common/vp9_reconinter.h"
#include "vp9/common/vp9_reconintra.h"
25

Dmitry Kovalev's avatar
Dmitry Kovalev committed
26
#include "vp9/encoder/vp9_encoder.h"
27
#include "vp9/encoder/vp9_pickmode.h"
28
#include "vp9/encoder/vp9_ratectrl.h"
29
#include "vp9/encoder/vp9_rd.h"
30

31
32
33
34
35
36
typedef struct {
  uint8_t *data;
  int stride;
  int in_use;
} PRED_BUFFER;

37
static int mv_refs_rt(const VP9_COMMON *cm, const MACROBLOCKD *xd,
38
39
40
41
                      const TileInfo *const tile,
                      MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                      int_mv *mv_ref_list,
                      int mi_row, int mi_col) {
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
  const int *ref_sign_bias = cm->ref_frame_sign_bias;
  int i, refmv_count = 0;

  const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type];

  int different_ref_found = 0;
  int context_counter = 0;
  int const_motion = 0;

  // Blank the reference vector list
  vpx_memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);

  // The nearest 2 blocks are treated differently
  // if the size < 8x8 we get the mv from the bmi substructure,
  // and we also need to keep a mode count.
  for (i = 0; i < 2; ++i) {
    const POSITION *const mv_ref = &mv_ref_search[i];
    if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
      const MODE_INFO *const candidate_mi = xd->mi[mv_ref->col + mv_ref->row *
hkuang's avatar
hkuang committed
61
                                                   xd->mi_stride].src_mi;
62
63
64
65
66
67
      const MB_MODE_INFO *const candidate = &candidate_mi->mbmi;
      // Keep counts for entropy encoding.
      context_counter += mode_2_counter[candidate->mode];
      different_ref_found = 1;

      if (candidate->ref_frame[0] == ref_frame)
68
69
        ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, -1),
                        refmv_count, mv_ref_list, Done);
70
71
72
73
74
75
76
77
78
79
80
81
    }
  }

  const_motion = 1;

  // Check the rest of the neighbors in much the same way
  // as before except we don't need to keep track of sub blocks or
  // mode counts.
  for (; i < MVREF_NEIGHBOURS && !refmv_count; ++i) {
    const POSITION *const mv_ref = &mv_ref_search[i];
    if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
      const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row *
hkuang's avatar
hkuang committed
82
                                                    xd->mi_stride].src_mi->mbmi;
83
84
85
      different_ref_found = 1;

      if (candidate->ref_frame[0] == ref_frame)
86
        ADD_MV_REF_LIST(candidate->mv[0], refmv_count, mv_ref_list, Done);
87
88
89
90
91
92
93
94
95
96
97
    }
  }

  // Since we couldn't find 2 mvs from the same reference frame
  // go back through the neighbors and find motion vectors from
  // different reference frames.
  if (different_ref_found && !refmv_count) {
    for (i = 0; i < MVREF_NEIGHBOURS; ++i) {
      const POSITION *mv_ref = &mv_ref_search[i];
      if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
        const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row
hkuang's avatar
hkuang committed
98
                                              * xd->mi_stride].src_mi->mbmi;
99
100

        // If the candidate is INTRA we don't want to consider its mv.
101
102
        IF_DIFF_REF_FRAME_ADD_MV(candidate, ref_frame, ref_sign_bias,
                                 refmv_count, mv_ref_list, Done);
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
      }
    }
  }

 Done:

  mi->mbmi.mode_context[ref_frame] = counter_to_context[context_counter];

  // Clamp vectors
  for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
    clamp_mv_ref(&mv_ref_list[i].as_mv, xd);

  return const_motion;
}

118
119
120
121
static int combined_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
                                  BLOCK_SIZE bsize, int mi_row, int mi_col,
                                  int_mv *tmp_mv, int *rate_mv,
                                  int64_t best_rd_sofar) {
122
  MACROBLOCKD *xd = &x->e_mbd;
hkuang's avatar
hkuang committed
123
  MB_MODE_INFO *mbmi = &xd->mi[0].src_mi->mbmi;
124
  struct buf_2d backup_yv12[MAX_MB_PLANE] = {{0, 0}};
125
126
  const int step_param = cpi->sf.mv.fullpel_search_step_param;
  const int sadpb = x->sadperbit16;
127
  MV mvp_full;
128
  const int ref = mbmi->ref_frame[0];
129
  const MV ref_mv = mbmi->ref_mvs[ref][0].as_mv;
130
131
132
133
134
135
136
  int dis;
  int rate_mode;
  const int tmp_col_min = x->mv_col_min;
  const int tmp_col_max = x->mv_col_max;
  const int tmp_row_min = x->mv_row_min;
  const int tmp_row_max = x->mv_row_max;
  int rv = 0;
137
  int cost_list[5];
138
139
  const YV12_BUFFER_CONFIG *scaled_ref_frame = vp9_get_scaled_ref_frame(cpi,
                                                                        ref);
Yaowu Xu's avatar
Yaowu Xu committed
140
141
142
143
  if (cpi->common.show_frame &&
      (x->pred_mv_sad[ref] >> 3) > x->pred_mv_sad[LAST_FRAME])
    return rv;

144
145
146
147
148
149
150
  if (scaled_ref_frame) {
    int i;
    // Swap out the reference frame for a version that's been scaled to
    // match the resolution of the current frame, allowing the existing
    // motion search code to be used without additional modifications.
    for (i = 0; i < MAX_MB_PLANE; i++)
      backup_yv12[i] = xd->plane[i].pre[0];
151
    vp9_setup_pre_planes(xd, 0, scaled_ref_frame, mi_row, mi_col, NULL);
152
  }
153
  vp9_set_mv_search_range(x, &ref_mv);
154

Yaowu Xu's avatar
Yaowu Xu committed
155
156
157
158
  assert(x->mv_best_ref_index[ref] <= 2);
  if (x->mv_best_ref_index[ref] < 2)
    mvp_full = mbmi->ref_mvs[ref][x->mv_best_ref_index[ref]].as_mv;
  else
Dmitry Kovalev's avatar
Dmitry Kovalev committed
159
    mvp_full = x->pred_mv[ref];
160
161
162
163

  mvp_full.col >>= 3;
  mvp_full.row >>= 3;

164
  vp9_full_pixel_search(cpi, x, bsize, &mvp_full, step_param, sadpb,
165
                        cond_cost_list(cpi, cost_list),
166
                        &ref_mv, &tmp_mv->as_mv, INT_MAX, 0);
167

168
169
170
171
172
  x->mv_col_min = tmp_col_min;
  x->mv_col_max = tmp_col_max;
  x->mv_row_min = tmp_row_min;
  x->mv_row_max = tmp_row_max;

173
174
175
  // calculate the bit cost on motion vector
  mvp_full.row = tmp_mv->as_mv.row * 8;
  mvp_full.col = tmp_mv->as_mv.col * 8;
176

177
178
  *rate_mv = vp9_mv_bit_cost(&mvp_full, &ref_mv,
                             x->nmvjointcost, x->mvcost, MV_COST_WEIGHT);
179

180
181
182
183
184
185
186
187
188
189
190
191
  rate_mode = cpi->inter_mode_cost[mbmi->mode_context[ref]]
                                  [INTER_OFFSET(NEWMV)];
  rv = !(RDCOST(x->rdmult, x->rddiv, (*rate_mv + rate_mode), 0) >
         best_rd_sofar);

  if (rv) {
    cpi->find_fractional_mv_step(x, &tmp_mv->as_mv, &ref_mv,
                                 cpi->common.allow_high_precision_mv,
                                 x->errorperbit,
                                 &cpi->fn_ptr[bsize],
                                 cpi->sf.mv.subpel_force_stop,
                                 cpi->sf.mv.subpel_iters_per_step,
192
                                 cond_cost_list(cpi, cost_list),
193
                                 x->nmvjointcost, x->mvcost,
194
                                 &dis, &x->pred_sse[ref], NULL, 0, 0);
195
    x->pred_mv[ref] = tmp_mv->as_mv;
196
197
198
199
200
201
202
  }

  if (scaled_ref_frame) {
    int i;
    for (i = 0; i < MAX_MB_PLANE; i++)
      xd->plane[i].pre[0] = backup_yv12[i];
  }
203
  return rv;
204
205
}

206

207
208
static void model_rd_for_sb_y(VP9_COMP *cpi, BLOCK_SIZE bsize,
                              MACROBLOCK *x, MACROBLOCKD *xd,
209
210
                              int *out_rate_sum, int64_t *out_dist_sum,
                              unsigned int *var_y, unsigned int *sse_y) {
211
212
213
214
  // Note our transform coeffs are 8 times an orthogonal transform.
  // Hence quantizer step is also 8 times. To get effective quantizer
  // we need to divide by 8 before sending to modeling function.
  unsigned int sse;
215
216
  int rate;
  int64_t dist;
217
218
  struct macroblock_plane *const p = &x->plane[0];
  struct macroblockd_plane *const pd = &xd->plane[0];
219
220
  const uint32_t dc_quant = pd->dequant[0];
  const uint32_t ac_quant = pd->dequant[1];
221
222
  unsigned int var = cpi->fn_ptr[bsize].vf(p->src.buf, p->src.stride,
                                           pd->dst.buf, pd->dst.stride, &sse);
223
224
225
  *var_y = var;
  *sse_y = sse;

226
  if (sse < dc_quant * dc_quant >> 6)
227
    x->skip_txfm[0] = 1;
228
  else if (var < ac_quant * ac_quant >> 6)
229
    x->skip_txfm[0] = 2;
230
  else
231
    x->skip_txfm[0] = 0;
232

233
234
  if (cpi->common.tx_mode == TX_MODE_SELECT) {
    if (sse > (var << 2))
hkuang's avatar
hkuang committed
235
      xd->mi[0].src_mi->mbmi.tx_size =
236
237
          MIN(max_txsize_lookup[bsize],
              tx_mode_to_biggest_tx_size[cpi->common.tx_mode]);
238
    else
hkuang's avatar
hkuang committed
239
      xd->mi[0].src_mi->mbmi.tx_size = TX_8X8;
240
241
242
243

    if (cpi->sf.partition_search_type == VAR_BASED_PARTITION &&
        xd->mi[0].src_mi->mbmi.tx_size > TX_16X16)
      xd->mi[0].src_mi->mbmi.tx_size = TX_16X16;
244
  } else {
hkuang's avatar
hkuang committed
245
    xd->mi[0].src_mi->mbmi.tx_size =
246
247
        MIN(max_txsize_lookup[bsize],
            tx_mode_to_biggest_tx_size[cpi->common.tx_mode]);
248
249
  }

250
251
252
253
254
255
256
257
258
#if CONFIG_VP9_HIGHBITDEPTH
  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    vp9_model_rd_from_var_lapndz(sse - var, 1 << num_pels_log2_lookup[bsize],
                                 dc_quant >> (xd->bd - 5), &rate, &dist);
  } else {
    vp9_model_rd_from_var_lapndz(sse - var, 1 << num_pels_log2_lookup[bsize],
                                 dc_quant >> 3, &rate, &dist);
  }
#else
259
260
  vp9_model_rd_from_var_lapndz(sse - var, 1 << num_pels_log2_lookup[bsize],
                               dc_quant >> 3, &rate, &dist);
261
262
#endif  // CONFIG_VP9_HIGHBITDEPTH

263
  *out_rate_sum = rate >> 1;
264
  *out_dist_sum = dist << 3;
265

266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
#if CONFIG_VP9_HIGHBITDEPTH
  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    vp9_model_rd_from_var_lapndz(var,
                                 1 << num_pels_log2_lookup[bsize],
                                 ac_quant >> (xd->bd - 5),
                                 &rate,
                                 &dist);
  } else {
    vp9_model_rd_from_var_lapndz(var,
                                 1 << num_pels_log2_lookup[bsize],
                                 ac_quant >> 3,
                                 &rate,
                                 &dist);
  }
#else
  vp9_model_rd_from_var_lapndz(var,
                               1 << num_pels_log2_lookup[bsize],
                               ac_quant >> 3,
                               &rate,
                               &dist);
#endif  // CONFIG_VP9_HIGHBITDEPTH

288
289
  *out_rate_sum += rate;
  *out_dist_sum += dist << 4;
290
291
}

292
293
294
295
296
297
298
299
300
301
302
303
304
static int get_pred_buffer(PRED_BUFFER *p, int len) {
  int i;

  for (i = 0; i < len; i++) {
    if (!p[i].in_use) {
      p[i].in_use = 1;
      return i;
    }
  }
  return -1;
}

static void free_pred_buffer(PRED_BUFFER *p) {
305
306
  if (p != NULL)
    p->in_use = 0;
307
308
}

309
310
311
312
313
314
315
316
static void encode_breakout_test(VP9_COMP *cpi, MACROBLOCK *x,
                                 BLOCK_SIZE bsize, int mi_row, int mi_col,
                                 MV_REFERENCE_FRAME ref_frame,
                                 PREDICTION_MODE this_mode,
                                 unsigned int var_y, unsigned int sse_y,
                                 struct buf_2d yv12_mb[][MAX_MB_PLANE],
                                 int *rate, int64_t *dist) {
  MACROBLOCKD *xd = &x->e_mbd;
hkuang's avatar
hkuang committed
317
  MB_MODE_INFO *mbmi = &xd->mi[0].src_mi->mbmi;
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332

  const BLOCK_SIZE uv_size = get_plane_block_size(bsize, &xd->plane[1]);
  unsigned int var = var_y, sse = sse_y;
  // Skipping threshold for ac.
  unsigned int thresh_ac;
  // Skipping threshold for dc.
  unsigned int thresh_dc;
  if (x->encode_breakout > 0) {
    // Set a maximum for threshold to avoid big PSNR loss in low bit rate
    // case. Use extreme low threshold for static frames to limit
    // skipping.
    const unsigned int max_thresh = 36000;
    // The encode_breakout input
    const unsigned int min_thresh =
        MIN(((unsigned int)x->encode_breakout << 4), max_thresh);
333
334
335
#if CONFIG_VP9_HIGHBITDEPTH
    const int shift = 2 * xd->bd - 16;
#endif
336
337
338

    // Calculate threshold according to dequant value.
    thresh_ac = (xd->plane[0].dequant[1] * xd->plane[0].dequant[1]) / 9;
339
340
341
342
343
#if CONFIG_VP9_HIGHBITDEPTH
    if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) && shift > 0) {
      thresh_ac = ROUND_POWER_OF_TWO(thresh_ac, shift);
    }
#endif  // CONFIG_VP9_HIGHBITDEPTH
344
345
346
347
    thresh_ac = clamp(thresh_ac, min_thresh, max_thresh);

    // Adjust ac threshold according to partition size.
    thresh_ac >>=
348
        8 - (b_width_log2_lookup[bsize] + b_height_log2_lookup[bsize]);
349
350

    thresh_dc = (xd->plane[0].dequant[0] * xd->plane[0].dequant[0] >> 6);
351
352
353
354
355
#if CONFIG_VP9_HIGHBITDEPTH
    if ((xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) && shift > 0) {
      thresh_dc = ROUND_POWER_OF_TWO(thresh_dc, shift);
    }
#endif  // CONFIG_VP9_HIGHBITDEPTH
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
  } else {
    thresh_ac = 0;
    thresh_dc = 0;
  }

  // Y skipping condition checking for ac and dc.
  if (var <= thresh_ac && (sse - var) <= thresh_dc) {
    unsigned int sse_u, sse_v;
    unsigned int var_u, var_v;

    // Skip UV prediction unless breakout is zero (lossless) to save
    // computation with low impact on the result
    if (x->encode_breakout == 0) {
      xd->plane[1].pre[0] = yv12_mb[ref_frame][1];
      xd->plane[2].pre[0] = yv12_mb[ref_frame][2];
      vp9_build_inter_predictors_sbuv(xd, mi_row, mi_col, bsize);
    }

    var_u = cpi->fn_ptr[uv_size].vf(x->plane[1].src.buf,
                                    x->plane[1].src.stride,
                                    xd->plane[1].dst.buf,
                                    xd->plane[1].dst.stride, &sse_u);

    // U skipping condition checking
    if ((var_u * 4 <= thresh_ac) && (sse_u - var_u <= thresh_dc)) {
      var_v = cpi->fn_ptr[uv_size].vf(x->plane[2].src.buf,
                                      x->plane[2].src.stride,
                                      xd->plane[2].dst.buf,
                                      xd->plane[2].dst.stride, &sse_v);

      // V skipping condition checking
      if ((var_v * 4 <= thresh_ac) && (sse_v - var_v <= thresh_dc)) {
        x->skip = 1;

        // The cost of skip bit needs to be added.
        *rate = cpi->inter_mode_cost[mbmi->mode_context[ref_frame]]
392
                                    [INTER_OFFSET(this_mode)];
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408

        // More on this part of rate
        // rate += vp9_cost_bit(vp9_get_skip_prob(cm, xd), 1);

        // Scaling factor for SSE from spatial domain to frequency
        // domain is 16. Adjust distortion accordingly.
        // TODO(yunqingwang): In this function, only y-plane dist is
        // calculated.
        *dist = (sse << 4);  // + ((sse_u + sse_v) << 4);

        // *disable_skip = 1;
      }
    }
  }
}

409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
struct estimate_block_intra_args {
  VP9_COMP *cpi;
  MACROBLOCK *x;
  PREDICTION_MODE mode;
  int rate;
  int64_t dist;
};

static void estimate_block_intra(int plane, int block, BLOCK_SIZE plane_bsize,
                                 TX_SIZE tx_size, void *arg) {
  struct estimate_block_intra_args* const args = arg;
  VP9_COMP *const cpi = args->cpi;
  MACROBLOCK *const x = args->x;
  MACROBLOCKD *const xd = &x->e_mbd;
  struct macroblock_plane *const p = &x->plane[0];
  struct macroblockd_plane *const pd = &xd->plane[0];
  const BLOCK_SIZE bsize_tx = txsize_to_bsize[tx_size];
  uint8_t *const src_buf_base = p->src.buf;
  uint8_t *const dst_buf_base = pd->dst.buf;
  const int src_stride = p->src.stride;
  const int dst_stride = pd->dst.stride;
  int i, j;
  int rate;
  int64_t dist;
  unsigned int var_y, sse_y;
  txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &i, &j);
  assert(plane == 0);
  (void) plane;

  p->src.buf = &src_buf_base[4 * (j * src_stride + i)];
  pd->dst.buf = &dst_buf_base[4 * (j * dst_stride + i)];
  // Use source buffer as an approximation for the fully reconstructed buffer.
  vp9_predict_intra_block(xd, block >> (2 * tx_size),
442
                          b_width_log2_lookup[plane_bsize],
443
444
445
446
447
448
449
450
451
452
453
454
                          tx_size, args->mode,
                          p->src.buf, src_stride,
                          pd->dst.buf, dst_stride,
                          i, j, 0);
  // This procedure assumes zero offset from p->src.buf and pd->dst.buf.
  model_rd_for_sb_y(cpi, bsize_tx, x, xd, &rate, &dist, &var_y, &sse_y);
  p->src.buf = src_buf_base;
  pd->dst.buf = dst_buf_base;
  args->rate += rate;
  args->dist += dist;
}

455
456
static const THR_MODES mode_idx[MAX_REF_FRAMES][4] = {
  {THR_DC, THR_H_PRED, THR_V_PRED},
457
458
459
460
461
  {THR_NEARESTMV, THR_NEARMV, THR_ZEROMV, THR_NEWMV},
  {THR_NEARESTG, THR_NEARG, THR_ZEROG, THR_NEWG},
  {THR_NEARESTA, THR_NEARA, THR_ZEROA, THR_NEWA},
};

462
463
// TODO(jingning) placeholder for inter-frame non-RD mode decision.
// this needs various further optimizations. to be continued..
464
void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
465
                         TileDataEnc *tile_data,
466
467
                         int mi_row, int mi_col, RD_COST *rd_cost,
                         BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx) {
468
  VP9_COMMON *const cm = &cpi->common;
469
  TileInfo *const tile_info = &tile_data->tile_info;
470
  MACROBLOCKD *const xd = &x->e_mbd;
hkuang's avatar
hkuang committed
471
  MB_MODE_INFO *const mbmi = &xd->mi[0].src_mi->mbmi;
472
  struct macroblockd_plane *const pd = &xd->plane[0];
473
  PREDICTION_MODE best_mode = ZEROMV;
474
  MV_REFERENCE_FRAME ref_frame, best_ref_frame = LAST_FRAME;
475
  TX_SIZE best_tx_size = MIN(max_txsize_lookup[bsize],
476
                             tx_mode_to_biggest_tx_size[cm->tx_mode]);
477
  INTERP_FILTER best_pred_filter = EIGHTTAP;
478
479
480
481
  int_mv frame_mv[MB_MODE_COUNT][MAX_REF_FRAMES];
  struct buf_2d yv12_mb[4][MAX_MB_PLANE];
  static const int flag_list[4] = { 0, VP9_LAST_FLAG, VP9_GOLD_FLAG,
                                    VP9_ALT_FLAG };
482
  RD_COST this_rdc, best_rdc;
483
  uint8_t skip_txfm = 0;
484
485
486
  // var_y and sse_y are saved to be used in skipping checking
  unsigned int var_y = UINT_MAX;
  unsigned int sse_y = UINT_MAX;
487
488
489
490
  // Reduce the intra cost penalty for small blocks (<=16x16).
  const int reduction_fac =
      (cpi->sf.partition_search_type == VAR_BASED_PARTITION &&
       bsize <= BLOCK_16X16) ? 4 : 1;
491
  const int intra_cost_penalty = vp9_get_intra_cost_penalty(
492
      cm->base_qindex, cm->y_dc_delta_q, cm->bit_depth) / reduction_fac;
493
494
  const int64_t inter_mode_thresh = RDCOST(x->rdmult, x->rddiv,
                                           intra_cost_penalty, 0);
495
  const int intra_mode_cost = 50;
496

497
  const int8_t segment_id = mbmi->segment_id;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
498
  const int *const rd_threshes = cpi->rd.threshes[segment_id][bsize];
499
  const int *const rd_thresh_freq_fact = tile_data->thresh_freq_fact[bsize];
Yaowu Xu's avatar
Yaowu Xu committed
500
  INTERP_FILTER filter_ref;
501
  const int bsl = mi_width_log2_lookup[bsize];
502
  const int pred_filter_search = cm->interp_filter == SWITCHABLE ?
503
504
      (((mi_row + mi_col) >> bsl) +
       get_chessboard_index(cm->current_video_frame)) & 0x1 : 0;
505
  int const_motion[MAX_REF_FRAMES] = { 0 };
506
507
  const int bh = num_4x4_blocks_high_lookup[bsize] << 2;
  const int bw = num_4x4_blocks_wide_lookup[bsize] << 2;
508
509
  // For speed 6, the result of interp filter is reused later in actual encoding
  // process.
510
511
512
  // tmp[3] points to dst buffer, and the other 3 point to allocated buffers.
  PRED_BUFFER tmp[4];
  DECLARE_ALIGNED_ARRAY(16, uint8_t, pred_buf, 3 * 64 * 64);
513
514
515
#if CONFIG_VP9_HIGHBITDEPTH
  DECLARE_ALIGNED_ARRAY(16, uint16_t, pred_buf_16, 3 * 64 * 64);
#endif
516
517
518
  struct buf_2d orig_dst = pd->dst;
  PRED_BUFFER *best_pred = NULL;
  PRED_BUFFER *this_mode_pred = NULL;
519
  const int pixels_in_block = bh * bw;
520
  int reuse_inter_pred = cpi->sf.reuse_inter_pred_sby && ctx->pred_pixel_ready;
521

522
  if (reuse_inter_pred) {
523
    int i;
524
    for (i = 0; i < 3; i++) {
525
526
527
528
529
530
531
532
#if CONFIG_VP9_HIGHBITDEPTH
      if (cm->use_highbitdepth)
        tmp[i].data = CONVERT_TO_BYTEPTR(&pred_buf_16[pixels_in_block * i]);
      else
        tmp[i].data = &pred_buf[pixels_in_block * i];
#else
      tmp[i].data = &pred_buf[pixels_in_block * i];
#endif  // CONFIG_VP9_HIGHBITDEPTH
533
534
535
536
537
538
539
540
      tmp[i].stride = bw;
      tmp[i].in_use = 0;
    }
    tmp[3].data = pd->dst.buf;
    tmp[3].stride = pd->dst.stride;
    tmp[3].in_use = 0;
  }

541
542
  x->skip_encode = cpi->sf.skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
  x->skip = 0;
543

Yaowu Xu's avatar
Yaowu Xu committed
544
545
546
547
548
549
550
  if (xd->up_available)
    filter_ref = xd->mi[-xd->mi_stride].src_mi->mbmi.interp_filter;
  else if (xd->left_available)
    filter_ref = xd->mi[-1].src_mi->mbmi.interp_filter;
  else
    filter_ref = cm->interp_filter;

551
  // initialize mode decisions
552
553
554
  vp9_rd_cost_reset(&best_rdc);
  vp9_rd_cost_reset(&this_rdc);
  vp9_rd_cost_reset(rd_cost);
555
556
557
558
559
  vpx_memset(mbmi, 0, sizeof(MB_MODE_INFO));
  mbmi->sb_type = bsize;
  mbmi->ref_frame[0] = NONE;
  mbmi->ref_frame[1] = NONE;
  mbmi->tx_size = MIN(max_txsize_lookup[bsize],
560
561
562
                      tx_mode_to_biggest_tx_size[cm->tx_mode]);
  mbmi->interp_filter = cm->interp_filter == SWITCHABLE ?
                        EIGHTTAP : cm->interp_filter;
563
  mbmi->segment_id = segment_id;
564

565
  for (ref_frame = LAST_FRAME; ref_frame <= GOLDEN_FRAME; ++ref_frame) {
566
    PREDICTION_MODE this_mode;
567
    x->pred_mv_sad[ref_frame] = INT_MAX;
568
569
570
    frame_mv[NEWMV][ref_frame].as_int = INVALID_MV;
    frame_mv[ZEROMV][ref_frame].as_int = 0;

571
    if (cpi->ref_frame_flags & flag_list[ref_frame]) {
572
573
574
575
576
577
      const YV12_BUFFER_CONFIG *yv12 = get_ref_frame_buffer(cpi, ref_frame);
      int_mv *const candidates = mbmi->ref_mvs[ref_frame];
      const struct scale_factors *const sf = &cm->frame_refs[ref_frame - 1].sf;
      vp9_setup_pred_block(xd, yv12_mb[ref_frame], yv12, mi_row, mi_col,
                           sf, sf);

578
      if (!cm->error_resilient_mode)
579
        vp9_find_mv_refs(cm, xd, tile_info, xd->mi[0].src_mi, ref_frame,
580
581
                         candidates, mi_row, mi_col);
      else
582
583
        const_motion[ref_frame] = mv_refs_rt(cm, xd, tile_info,
                                             xd->mi[0].src_mi,
584
585
586
587
588
589
590
591
592
593
                                             ref_frame, candidates,
                                             mi_row, mi_col);

      vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv, candidates,
                            &frame_mv[NEARESTMV][ref_frame],
                            &frame_mv[NEARMV][ref_frame]);

      if (!vp9_is_scaled(sf) && bsize >= BLOCK_8X8)
        vp9_mv_pred(cpi, x, yv12_mb[ref_frame][0].buf, yv12->y_stride,
                    ref_frame, bsize);
594
    } else {
595
      continue;
596
    }
597
598
599
600
601
602
603

    // Select prediction reference frames.
    xd->plane[0].pre[0] = yv12_mb[ref_frame][0];

    clamp_mv2(&frame_mv[NEARESTMV][ref_frame].as_mv, xd);
    clamp_mv2(&frame_mv[NEARMV][ref_frame].as_mv, xd);

604
605
    mbmi->ref_frame[0] = ref_frame;

606
    for (this_mode = NEARESTMV; this_mode <= NEWMV; ++this_mode) {
607
      int rate_mv = 0;
608
      int mode_rd_thresh;
609
      int mode_index = mode_idx[ref_frame][INTER_OFFSET(this_mode)];
610

611
      if (const_motion[ref_frame] && this_mode == NEARMV)
612
613
        continue;

614
      if (!(cpi->sf.inter_mode_mask[bsize] & (1 << this_mode)))
615
        continue;
Jim Bankoski's avatar
Jim Bankoski committed
616

617
      mode_rd_thresh = rd_threshes[mode_index];
618
      if (rd_less_than_thresh(best_rdc.rdcost, mode_rd_thresh,
619
                              rd_thresh_freq_fact[mode_index]))
620
621
        continue;

Jim Bankoski's avatar
Jim Bankoski committed
622
      if (this_mode == NEWMV) {
623
624
        if (ref_frame > LAST_FRAME)
          continue;
625
        if (cpi->sf.partition_search_type != VAR_BASED_PARTITION &&
626
            this_rdc.rdcost < (int64_t)(1 << num_pels_log2_lookup[bsize]))
627
          continue;
628
629
        if (!combined_motion_search(cpi, x, bsize, mi_row, mi_col,
                                    &frame_mv[NEWMV][ref_frame],
630
                                    &rate_mv, best_rdc.rdcost))
Jim Bankoski's avatar
Jim Bankoski committed
631
632
633
          continue;
      }

634
635
636
      if (this_mode != NEARESTMV &&
          frame_mv[this_mode][ref_frame].as_int ==
              frame_mv[NEARESTMV][ref_frame].as_int)
637
        continue;
638

639
640
      mbmi->mode = this_mode;
      mbmi->mv[0].as_int = frame_mv[this_mode][ref_frame].as_int;
641

642
643
644
      // Search for the best prediction filter type, when the resulting
      // motion vector is at sub-pixel accuracy level for luma component, i.e.,
      // the last three bits are all zeros.
645
      if (reuse_inter_pred) {
646
        if (!this_mode_pred) {
647
648
649
650
651
652
653
654
          this_mode_pred = &tmp[3];
        } else {
          this_mode_pred = &tmp[get_pred_buffer(tmp, 3)];
          pd->dst.buf = this_mode_pred->data;
          pd->dst.stride = bw;
        }
      }

655
      if ((this_mode == NEWMV || filter_ref == SWITCHABLE) &&
656
          pred_filter_search &&
657
658
659
660
          ((mbmi->mv[0].as_mv.row & 0x07) != 0 ||
           (mbmi->mv[0].as_mv.col & 0x07) != 0)) {
        int pf_rate[3];
        int64_t pf_dist[3];
661
662
        unsigned int pf_var[3];
        unsigned int pf_sse[3];
663
        TX_SIZE pf_tx_size[3];
664
665
        int64_t best_cost = INT64_MAX;
        INTERP_FILTER best_filter = SWITCHABLE, filter;
666
        PRED_BUFFER *current_pred = this_mode_pred;
667
668
669
670
671
672

        for (filter = EIGHTTAP; filter <= EIGHTTAP_SHARP; ++filter) {
          int64_t cost;
          mbmi->interp_filter = filter;
          vp9_build_inter_predictors_sby(xd, mi_row, mi_col, bsize);
          model_rd_for_sb_y(cpi, bsize, x, xd, &pf_rate[filter],
673
                            &pf_dist[filter], &pf_var[filter], &pf_sse[filter]);
674
675
676
          cost = RDCOST(x->rdmult, x->rddiv,
                        vp9_get_switchable_rate(cpi) + pf_rate[filter],
                        pf_dist[filter]);
677
          pf_tx_size[filter] = mbmi->tx_size;
678
          if (cost < best_cost) {
679
680
            best_filter = filter;
            best_cost = cost;
681
            skip_txfm = x->skip_txfm[0];
682

683
            if (reuse_inter_pred) {
684
685
686
687
688
689
690
691
692
693
694
              if (this_mode_pred != current_pred) {
                free_pred_buffer(this_mode_pred);
                this_mode_pred = current_pred;
              }

              if (filter < EIGHTTAP_SHARP) {
                current_pred = &tmp[get_pred_buffer(tmp, 3)];
                pd->dst.buf = current_pred->data;
                pd->dst.stride = bw;
              }
            }
695
          }
696
697
        }

698
        if (reuse_inter_pred && this_mode_pred != current_pred)
699
700
          free_pred_buffer(current_pred);

701
        mbmi->interp_filter = best_filter;
702
        mbmi->tx_size = pf_tx_size[mbmi->interp_filter];
703
704
        this_rdc.rate = pf_rate[mbmi->interp_filter];
        this_rdc.dist = pf_dist[mbmi->interp_filter];
705
706
        var_y = pf_var[mbmi->interp_filter];
        sse_y = pf_sse[mbmi->interp_filter];
707
        x->skip_txfm[0] = skip_txfm;
708
709
710
      } else {
        mbmi->interp_filter = (filter_ref == SWITCHABLE) ? EIGHTTAP: filter_ref;
        vp9_build_inter_predictors_sby(xd, mi_row, mi_col, bsize);
711
712
        model_rd_for_sb_y(cpi, bsize, x, xd, &this_rdc.rate, &this_rdc.dist,
                          &var_y, &sse_y);
713
714
      }

715
716
      this_rdc.rate += rate_mv;
      this_rdc.rate += cpi->inter_mode_cost[mbmi->mode_context[ref_frame]]
717
                                  [INTER_OFFSET(this_mode)];
718
719
      this_rdc.rdcost = RDCOST(x->rdmult, x->rddiv,
                               this_rdc.rate, this_rdc.dist);
720

721
722
      // Skipping checking: test to see if this block can be reconstructed by
      // prediction only.
723
      if (cpi->allow_encode_breakout) {
724
        encode_breakout_test(cpi, x, bsize, mi_row, mi_col, ref_frame,
725
726
                             this_mode, var_y, sse_y, yv12_mb,
                             &this_rdc.rate, &this_rdc.dist);
727
        if (x->skip) {
728
729
730
          this_rdc.rate += rate_mv;
          this_rdc.rdcost = RDCOST(x->rdmult, x->rddiv,
                                   this_rdc.rate, this_rdc.dist);
731
732
733
        }
      }

734
#if CONFIG_VP9_TEMPORAL_DENOISING
735
      if (cpi->oxcf.noise_sensitivity > 0) {
736
        vp9_denoiser_update_frame_stats(mbmi, sse_y, this_mode, ctx);
737
      }
738
739
#else
      (void)ctx;
Tim Kopp's avatar
Tim Kopp committed
740
741
#endif

742
743
      if (this_rdc.rdcost < best_rdc.rdcost || x->skip) {
        best_rdc = this_rdc;
744
        best_mode = this_mode;
745
        best_pred_filter = mbmi->interp_filter;
746
        best_tx_size = mbmi->tx_size;
747
        best_ref_frame = ref_frame;
748
        skip_txfm = x->skip_txfm[0];
749

750
        if (reuse_inter_pred) {
751
          free_pred_buffer(best_pred);
752
753
754
          best_pred = this_mode_pred;
        }
      } else {
755
        if (reuse_inter_pred)
756
          free_pred_buffer(this_mode_pred);
757
      }
758
759
760

      if (x->skip)
        break;
761
    }
762
763
764

    // Check that a prediction mode has been selected.
    assert(best_rdc.rdcost < INT64_MAX);
765
766
  }

767
768
  // If best prediction is not in dst buf, then copy the prediction block from
  // temp buf to dst buf.
769
  if (best_pred != NULL && reuse_inter_pred &&
770
      best_pred->data != orig_dst.buf) {
771
    pd->dst = orig_dst;
772
773
#if CONFIG_VP9_HIGHBITDEPTH
    if (cm->use_highbitdepth) {
774
775
      vp9_highbd_convolve_copy(best_pred->data, bw, pd->dst.buf, pd->dst.stride,
                               NULL, 0, NULL, 0, bw, bh, xd->bd);
776
777
778
779
780
    } else {
      vp9_convolve_copy(best_pred->data, bw, pd->dst.buf, pd->dst.stride,
                        NULL, 0, NULL, 0, bw, bh);
    }
#else
781
782
    vp9_convolve_copy(best_pred->data, bw, pd->dst.buf, pd->dst.stride, NULL, 0,
                      NULL, 0, bw, bh);
783
#endif  // CONFIG_VP9_HIGHBITDEPTH
784
  }
Tim Kopp's avatar
Tim Kopp committed
785

786
  mbmi->mode          = best_mode;
787
  mbmi->interp_filter = best_pred_filter;
788
789
790
  mbmi->tx_size       = best_tx_size;
  mbmi->ref_frame[0]  = best_ref_frame;
  mbmi->mv[0].as_int  = frame_mv[best_mode][best_ref_frame].as_int;
hkuang's avatar
hkuang committed
791
  xd->mi[0].src_mi->bmi[0].as_mv[0].as_int = mbmi->mv[0].as_int;
792
  x->skip_txfm[0] = skip_txfm;
793

794
795
  // Perform intra prediction search, if the best SAD is above a certain
  // threshold.
796
  if (!x->skip && best_rdc.rdcost > inter_mode_thresh &&
797
      bsize <= cpi->sf.max_intra_bsize) {
798
    PREDICTION_MODE this_mode;
799
800
801
802
    struct estimate_block_intra_args args = { cpi, x, DC_PRED, 0, 0 };
    const TX_SIZE intra_tx_size =
        MIN(max_txsize_lookup[bsize],
            tx_mode_to_biggest_tx_size[cpi->common.tx_mode]);
803

804
    if (reuse_inter_pred) {
805
806
807
      pd->dst.buf = tmp[0].data;
      pd->dst.stride = bw;
    }
808

809
    for (this_mode = DC_PRED; this_mode <= DC_PRED; ++this_mode) {
810
811
812
813
814
815
816
817
      const TX_SIZE saved_tx_size = mbmi->tx_size;
      args.mode = this_mode;
      args.rate = 0;
      args.dist = 0;
      mbmi->tx_size = intra_tx_size;
      vp9_foreach_transformed_block_in_plane(xd, bsize, 0,
                                             estimate_block_intra, &args);
      mbmi->tx_size = saved_tx_size;
818
819
820
821
822
823
824
825
826
      this_rdc.rate = args.rate;
      this_rdc.dist = args.dist;
      this_rdc.rate += cpi->mbmode_cost[this_mode];
      this_rdc.rate += intra_cost_penalty;
      this_rdc.rdcost = RDCOST(x->rdmult, x->rddiv,
                               this_rdc.rate, this_rdc.dist);

      if (this_rdc.rdcost + intra_mode_cost < best_rdc.rdcost) {
        best_rdc = this_rdc;
827
        mbmi->mode = this_mode;
828
        mbmi->tx_size = intra_tx_size;
829
830
        mbmi->ref_frame[0] = INTRA_FRAME;
        mbmi->uv_mode = this_mode;
831
        mbmi->mv[0].as_int = INVALID_MV;
832
      } else {
833
        x->skip_txfm[0] = skip_txfm;
834
835
      }
    }
836
    if (reuse_inter_pred)
837
      pd->dst = orig_dst;
838
  }
839

840
  if (is_inter_block(mbmi))
841
    vp9_update_rd_thresh_fact(tile_data->thresh_freq_fact,
842
843
                            cpi->sf.adaptive_rd_thresh, bsize,
                            mode_idx[best_ref_frame][INTER_OFFSET(mbmi->mode)]);
844
  else
845
846
    vp9_update_rd_thresh_fact(tile_data->thresh_freq_fact,
                              cpi->sf.adaptive_rd_thresh, bsize,
847
                              mode_idx[INTRA_FRAME][mbmi->mode]);
848

849
  *rd_cost = best_rdc;
850
}