vp9_encodeframe.c 60 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5
6
 *  that can be found in the LICENSE file in the root of the source
 *  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.
John Koleszar's avatar
John Koleszar committed
9
10
11
 */


12
#include "./vpx_config.h"
13
#include "vp9/encoder/vp9_encodeframe.h"
14
15
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_encodemv.h"
16
#include "vp9/common/vp9_common.h"
17
#include "vp9/encoder/vp9_onyx_int.h"
18
#include "vp9/common/vp9_extend.h"
Yaowu Xu's avatar
Yaowu Xu committed
19
#include "vp9/common/vp9_entropy.h"
20
21
#include "vp9/common/vp9_entropymode.h"
#include "vp9/common/vp9_quant_common.h"
22
23
#include "vp9/encoder/vp9_segmentation.h"
#include "vp9/encoder/vp9_encodeintra.h"
24
25
#include "vp9/common/vp9_reconinter.h"
#include "vp9/common/vp9_invtrans.h"
26
#include "vp9/encoder/vp9_rdopt.h"
27
28
29
#include "vp9/common/vp9_findnearmv.h"
#include "vp9/common/vp9_reconintra.h"
#include "vp9/common/vp9_seg_common.h"
30
#include "vp9/common/vp9_tile_common.h"
31
#include "vp9/encoder/vp9_tokenize.h"
Yaowu Xu's avatar
Yaowu Xu committed
32
#include "./vp9_rtcd.h"
John Koleszar's avatar
John Koleszar committed
33
#include <stdio.h>
34
#include <math.h>
John Koleszar's avatar
John Koleszar committed
35
36
#include <limits.h>
#include "vpx_ports/vpx_timer.h"
37
38
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_mvref_common.h"
Paul Wilkins's avatar
Paul Wilkins committed
39

Yaowu Xu's avatar
Yaowu Xu committed
40
#define DBG_PRNT_SEGMAP 0
41

42
// #define ENC_DEBUG
43
#ifdef ENC_DEBUG
John Koleszar's avatar
John Koleszar committed
44
int enc_debug = 0;
45
46
#endif

Dmitry Kovalev's avatar
Dmitry Kovalev committed
47
void vp9_select_interp_filter_type(VP9_COMP *cpi);
48

49
static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t,
50
                              int output_enabled, int mi_row, int mi_col,
51
                              BLOCK_SIZE_TYPE bsize);
52

53
static void adjust_act_zbin(VP9_COMP *cpi, MACROBLOCK *x);
54

55
56
57
/* activity_avg must be positive, or flat regions could get a zero weight
 *  (infinite lambda), which confounds analysis.
 * This also avoids the need for divide by zero checks in
58
 *  vp9_activity_masking().
59
 */
60
#define VP9_ACTIVITY_AVG_MIN (64)
61
62
63
64
65
66

/* This is used as a reference when computing the source variance for the
 *  purposes of activity masking.
 * Eventually this should be replaced by custom no-reference routines,
 *  which will be faster.
 */
67
static const uint8_t VP9_VAR_OFFS[16] = {
John Koleszar's avatar
John Koleszar committed
68
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128
69
70
};

71
72

// Original activity measure from Tim T's code.
73
static unsigned int tt_activity_measure(VP9_COMP *cpi, MACROBLOCK *x) {
John Koleszar's avatar
John Koleszar committed
74
75
76
77
78
79
80
81
82
  unsigned int act;
  unsigned int sse;
  /* TODO: This could also be done over smaller areas (8x8), but that would
   *  require extensive changes elsewhere, as lambda is assumed to be fixed
   *  over an entire MB in most of the code.
   * Another option is to compute four 8x8 variances, and pick a single
   *  lambda using a non-linear combination (e.g., the smallest, or second
   *  smallest, etc.).
   */
John Koleszar's avatar
John Koleszar committed
83
84
  act = vp9_variance16x16(x->plane[0].src.buf, x->plane[0].src.stride,
                          VP9_VAR_OFFS, 0, &sse);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
85
  act <<= 4;
John Koleszar's avatar
John Koleszar committed
86
87
88
89
90
91

  /* If the region is flat, lower the activity some more. */
  if (act < 8 << 12)
    act = act < 5 << 12 ? act : 5 << 12;

  return act;
92
93
}

94
// Stub for alternative experimental activity measures.
95
static unsigned int alt_activity_measure(VP9_COMP *cpi,
John Koleszar's avatar
John Koleszar committed
96
                                         MACROBLOCK *x, int use_dc_pred) {
97
  return vp9_encode_intra(cpi, x, use_dc_pred);
98
99
100
101
102
}


// Measure the activity of the current macroblock
// What we measure here is TBD so abstracted to this function
103
#define ALT_ACT_MEASURE 1
104
static unsigned int mb_activity_measure(VP9_COMP *cpi, MACROBLOCK *x,
John Koleszar's avatar
John Koleszar committed
105
106
                                        int mb_row, int mb_col) {
  unsigned int mb_activity;
107

John Koleszar's avatar
John Koleszar committed
108
109
  if (ALT_ACT_MEASURE) {
    int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
110

John Koleszar's avatar
John Koleszar committed
111
112
113
114
115
116
    // Or use and alternative.
    mb_activity = alt_activity_measure(cpi, x, use_dc_pred);
  } else {
    // Original activity measure from Tim T's code.
    mb_activity = tt_activity_measure(cpi, x);
  }
117

118
119
  if (mb_activity < VP9_ACTIVITY_AVG_MIN)
    mb_activity = VP9_ACTIVITY_AVG_MIN;
120

John Koleszar's avatar
John Koleszar committed
121
  return mb_activity;
122
123
124
}

// Calculate an "average" mb activity value for the frame
125
#define ACT_MEDIAN 0
126
static void calc_av_activity(VP9_COMP *cpi, int64_t activity_sum) {
127
#if ACT_MEDIAN
John Koleszar's avatar
John Koleszar committed
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
  // Find median: Simple n^2 algorithm for experimentation
  {
    unsigned int median;
    unsigned int i, j;
    unsigned int *sortlist;
    unsigned int tmp;

    // Create a list to sort to
    CHECK_MEM_ERROR(sortlist,
    vpx_calloc(sizeof(unsigned int),
    cpi->common.MBs));

    // Copy map to sort list
    vpx_memcpy(sortlist, cpi->mb_activity_map,
    sizeof(unsigned int) * cpi->common.MBs);


    // Ripple each value down to its correct position
    for (i = 1; i < cpi->common.MBs; i ++) {
      for (j = i; j > 0; j --) {
        if (sortlist[j] < sortlist[j - 1]) {
          // Swap values
          tmp = sortlist[j - 1];
          sortlist[j - 1] = sortlist[j];
          sortlist[j] = tmp;
        } else
          break;
      }
    }
157

John Koleszar's avatar
John Koleszar committed
158
159
160
    // Even number MBs so estimate median as mean of two either side.
    median = (1 + sortlist[cpi->common.MBs >> 1] +
              sortlist[(cpi->common.MBs >> 1) + 1]) >> 1;
161

John Koleszar's avatar
John Koleszar committed
162
    cpi->activity_avg = median;
163

John Koleszar's avatar
John Koleszar committed
164
165
    vpx_free(sortlist);
  }
166
#else
John Koleszar's avatar
John Koleszar committed
167
168
  // Simple mean for now
  cpi->activity_avg = (unsigned int)(activity_sum / cpi->common.MBs);
169
170
#endif

171
172
  if (cpi->activity_avg < VP9_ACTIVITY_AVG_MIN)
    cpi->activity_avg = VP9_ACTIVITY_AVG_MIN;
173

John Koleszar's avatar
John Koleszar committed
174
175
176
  // Experimental code: return fixed value normalized for several clips
  if (ALT_ACT_MEASURE)
    cpi->activity_avg = 100000;
177
178
}

179
#define USE_ACT_INDEX   0
180
#define OUTPUT_NORM_ACT_STATS   0
181
182

#if USE_ACT_INDEX
183
// Calculate an activity index for each mb
184
185
static void calc_activity_index(VP9_COMP *cpi, MACROBLOCK *x) {
  VP9_COMMON *const cm = &cpi->common;
John Koleszar's avatar
John Koleszar committed
186
  int mb_row, mb_col;
187

John Koleszar's avatar
John Koleszar committed
188
189
190
  int64_t act;
  int64_t a;
  int64_t b;
191
192

#if OUTPUT_NORM_ACT_STATS
John Koleszar's avatar
John Koleszar committed
193
194
  FILE *f = fopen("norm_act.stt", "a");
  fprintf(f, "\n%12d\n", cpi->activity_avg);
195
196
#endif

John Koleszar's avatar
John Koleszar committed
197
198
  // Reset pointers to start of activity map
  x->mb_activity_ptr = cpi->mb_activity_map;
199

John Koleszar's avatar
John Koleszar committed
200
201
202
203
204
205
  // Calculate normalized mb activity number.
  for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) {
    // for each macroblock col in image
    for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {
      // Read activity from the map
      act = *(x->mb_activity_ptr);
206

John Koleszar's avatar
John Koleszar committed
207
208
209
      // Calculate a normalized activity number
      a = act + 4 * cpi->activity_avg;
      b = 4 * act + cpi->activity_avg;
210

John Koleszar's avatar
John Koleszar committed
211
212
213
214
      if (b >= a)
        *(x->activity_ptr) = (int)((b + (a >> 1)) / a) - 1;
      else
        *(x->activity_ptr) = 1 - (int)((a + (b >> 1)) / b);
215
216

#if OUTPUT_NORM_ACT_STATS
John Koleszar's avatar
John Koleszar committed
217
      fprintf(f, " %6d", *(x->mb_activity_ptr));
218
#endif
John Koleszar's avatar
John Koleszar committed
219
220
221
      // Increment activity map pointers
      x->mb_activity_ptr++;
    }
222
223

#if OUTPUT_NORM_ACT_STATS
John Koleszar's avatar
John Koleszar committed
224
    fprintf(f, "\n");
225
226
#endif

John Koleszar's avatar
John Koleszar committed
227
  }
228
229

#if OUTPUT_NORM_ACT_STATS
John Koleszar's avatar
John Koleszar committed
230
  fclose(f);
231
232
233
#endif

}
234
#endif
235
236
237

// Loop through all MBs. Note activity of each, average activity and
// calculate a normalized activity for each
238
static void build_activity_map(VP9_COMP *cpi) {
John Koleszar's avatar
John Koleszar committed
239
  MACROBLOCK *const x = &cpi->mb;
John Koleszar's avatar
John Koleszar committed
240
  MACROBLOCKD *xd = &x->e_mbd;
241
  VP9_COMMON *const cm = &cpi->common;
242

243
#if ALT_ACT_MEASURE
John Koleszar's avatar
John Koleszar committed
244
245
246
  YV12_BUFFER_CONFIG *new_yv12 = &cm->yv12_fb[cm->new_fb_idx];
  int recon_yoffset;
  int recon_y_stride = new_yv12->y_stride;
247
248
#endif

John Koleszar's avatar
John Koleszar committed
249
250
251
  int mb_row, mb_col;
  unsigned int mb_activity;
  int64_t activity_sum = 0;
252

253
254
  x->mb_activity_ptr = cpi->mb_activity_map;

John Koleszar's avatar
John Koleszar committed
255
256
  // for each macroblock row in image
  for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) {
257
#if ALT_ACT_MEASURE
John Koleszar's avatar
John Koleszar committed
258
259
260
    // reset above block coeffs
    xd->up_available = (mb_row != 0);
    recon_yoffset = (mb_row * recon_y_stride * 16);
261
#endif
John Koleszar's avatar
John Koleszar committed
262
263
    // for each macroblock col in image
    for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) {
264
#if ALT_ACT_MEASURE
265
      xd->plane[0].dst.buf = new_yv12->y_buffer + recon_yoffset;
John Koleszar's avatar
John Koleszar committed
266
267
      xd->left_available = (mb_col != 0);
      recon_yoffset += 16;
268
#endif
269

John Koleszar's avatar
John Koleszar committed
270
271
      // measure activity
      mb_activity = mb_activity_measure(cpi, x, mb_row, mb_col);
272

John Koleszar's avatar
John Koleszar committed
273
274
      // Keep frame sum
      activity_sum += mb_activity;
275

John Koleszar's avatar
John Koleszar committed
276
277
      // Store MB level activity details.
      *x->mb_activity_ptr = mb_activity;
278

John Koleszar's avatar
John Koleszar committed
279
280
      // Increment activity map pointer
      x->mb_activity_ptr++;
281

John Koleszar's avatar
John Koleszar committed
282
      // adjust to the next column of source macroblocks
John Koleszar's avatar
John Koleszar committed
283
      x->plane[0].src.buf += 16;
John Koleszar's avatar
John Koleszar committed
284
    }
285

286

John Koleszar's avatar
John Koleszar committed
287
    // adjust to the next row of mbs
John Koleszar's avatar
John Koleszar committed
288
    x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols;
John Koleszar's avatar
John Koleszar committed
289
  }
290

John Koleszar's avatar
John Koleszar committed
291
292
  // Calculate an "average" MB activity
  calc_av_activity(cpi, activity_sum);
293

294
#if USE_ACT_INDEX
John Koleszar's avatar
John Koleszar committed
295
296
  // Calculate an activity index number of each mb
  calc_activity_index(cpi, x);
297
298
#endif

299
300
}

301
// Macroblock activity masking
302
void vp9_activity_masking(VP9_COMP *cpi, MACROBLOCK *x) {
303
#if USE_ACT_INDEX
John Koleszar's avatar
John Koleszar committed
304
305
306
  x->rdmult += *(x->mb_activity_ptr) * (x->rdmult >> 2);
  x->errorperbit = x->rdmult * 100 / (110 * x->rddiv);
  x->errorperbit += (x->errorperbit == 0);
307
#else
John Koleszar's avatar
John Koleszar committed
308
309
310
  int64_t a;
  int64_t b;
  int64_t act = *(x->mb_activity_ptr);
311

John Koleszar's avatar
John Koleszar committed
312
313
314
  // Apply the masking to the RD multiplier.
  a = act + (2 * cpi->activity_avg);
  b = (2 * act) + cpi->activity_avg;
315

John Koleszar's avatar
John Koleszar committed
316
317
318
  x->rdmult = (unsigned int)(((int64_t)x->rdmult * b + (a >> 1)) / a);
  x->errorperbit = x->rdmult * 100 / (110 * x->rddiv);
  x->errorperbit += (x->errorperbit == 0);
319
#endif
320

John Koleszar's avatar
John Koleszar committed
321
322
  // Activity based Zbin adjustment
  adjust_act_zbin(cpi, x);
323
}
John Koleszar's avatar
John Koleszar committed
324

325
static void update_state(VP9_COMP *cpi,
326
327
                         PICK_MODE_CONTEXT *ctx,
                         BLOCK_SIZE_TYPE bsize,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
328
329
                         int output_enabled) {
  int i, x_idx, y;
330
  VP9_COMMON *const cm = &cpi->common;
331
332
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
John Koleszar's avatar
John Koleszar committed
333
  MODE_INFO *mi = &ctx->mic;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
334
  MB_MODE_INFO *const mbmi = &xd->mode_info_context->mbmi;
John Koleszar's avatar
John Koleszar committed
335
336
  int mb_mode = mi->mbmi.mode;
  int mb_mode_index = ctx->best_mode_index;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
337
  const int mis = cpi->common.mode_info_stride;
338
  const int bh = 1 << mi_height_log2(bsize), bw = 1 << mi_width_log2(bsize);
Adrian Grange's avatar
Adrian Grange committed
339
340

#if CONFIG_DEBUG
John Koleszar's avatar
John Koleszar committed
341
342
343
  assert(mb_mode < MB_MODE_COUNT);
  assert(mb_mode_index < MAX_MODES);
  assert(mi->mbmi.ref_frame < MAX_REF_FRAMES);
Adrian Grange's avatar
Adrian Grange committed
344
345
#endif

346
  assert(mi->mbmi.sb_type == bsize);
John Koleszar's avatar
John Koleszar committed
347
348
  // Restore the coding context of the MB to that that was in place
  // when the mode was picked for it
349
350
  for (y = 0; y < bh; y++) {
    for (x_idx = 0; x_idx < bw; x_idx++) {
351
352
      if ((xd->mb_to_right_edge >> (3 + LOG2_MI_SIZE)) + bw > x_idx &&
          (xd->mb_to_bottom_edge >> (3 + LOG2_MI_SIZE)) + bh > y) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
353
354
355
356
        MODE_INFO *mi_addr = xd->mode_info_context + x_idx + y * mis;

        vpx_memcpy(mi_addr, mi, sizeof(MODE_INFO));
      }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
357
    }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
358
  }
359
  if (bsize < BLOCK_SIZE_SB32X32) {
360
361
    if (bsize < BLOCK_SIZE_MB16X16)
      ctx->txfm_rd_diff[ALLOW_16X16] = ctx->txfm_rd_diff[ALLOW_8X8];
362
    ctx->txfm_rd_diff[ALLOW_32X32] = ctx->txfm_rd_diff[ALLOW_16X16];
Ronald S. Bultje's avatar
Ronald S. Bultje committed
363
  }
Adrian Grange's avatar
Adrian Grange committed
364

Scott LaVarnway's avatar
Scott LaVarnway committed
365
  if (mb_mode == SPLITMV) {
John Koleszar's avatar
John Koleszar committed
366
367
368
    vpx_memcpy(x->partition_info, &ctx->partition_info,
               sizeof(PARTITION_INFO));

369
    mbmi->mv[0].as_int =
Jingning Han's avatar
Jingning Han committed
370
        x->partition_info->bmi[3].mv.as_int;
371
    mbmi->mv[1].as_int =
Jingning Han's avatar
Jingning Han committed
372
        x->partition_info->bmi[3].second_mv.as_int;
John Koleszar's avatar
John Koleszar committed
373
374
  }

375
  x->skip = ctx->skip;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
376
377
378
  if (!output_enabled)
    return;

379
  {
380
    int segment_id = mbmi->segment_id, ref_pred_flag;
Paul Wilkins's avatar
Paul Wilkins committed
381
    if (!vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
382
383
384
385
      for (i = 0; i < NB_TXFM_MODES; i++) {
        cpi->rd_tx_select_diff[i] += ctx->txfm_rd_diff[i];
      }
    }
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402

    // Did the chosen reference frame match its predicted value.
    ref_pred_flag = ((xd->mode_info_context->mbmi.ref_frame ==
                      vp9_get_pred_ref(cm, xd)));
    vp9_set_pred_flag(xd, PRED_REF, ref_pred_flag);
    if (!xd->segmentation_enabled ||
        !vp9_segfeature_active(xd, segment_id, SEG_LVL_REF_FRAME) ||
        vp9_check_segref(xd, segment_id, INTRA_FRAME)  +
        vp9_check_segref(xd, segment_id, LAST_FRAME)   +
        vp9_check_segref(xd, segment_id, GOLDEN_FRAME) +
        vp9_check_segref(xd, segment_id, ALTREF_FRAME) > 1) {
      // Get the prediction context and status
      int pred_context = vp9_get_pred_context(cm, xd, PRED_REF);

      // Count prediction success
      cpi->ref_pred_count[pred_context][ref_pred_flag]++;
    }
403
404
  }

John Koleszar's avatar
John Koleszar committed
405
406
  if (cpi->common.frame_type == KEY_FRAME) {
    // Restore the coding modes to that held in the coding context
Yaowu Xu's avatar
Yaowu Xu committed
407
    // if (mb_mode == I4X4_PRED)
John Koleszar's avatar
John Koleszar committed
408
409
410
411
412
413
    //    for (i = 0; i < 16; i++)
    //    {
    //        xd->block[i].bmi.as_mode =
    //                          xd->mode_info_context->bmi[i].as_mode;
    //        assert(xd->mode_info_context->bmi[i].as_mode < MB_MODE_COUNT);
    //    }
414
#if CONFIG_INTERNAL_STATS
John Koleszar's avatar
John Koleszar committed
415
416
417
418
419
420
421
422
423
424
425
    static const int kf_mode_index[] = {
      THR_DC /*DC_PRED*/,
      THR_V_PRED /*V_PRED*/,
      THR_H_PRED /*H_PRED*/,
      THR_D45_PRED /*D45_PRED*/,
      THR_D135_PRED /*D135_PRED*/,
      THR_D117_PRED /*D117_PRED*/,
      THR_D153_PRED /*D153_PRED*/,
      THR_D27_PRED /*D27_PRED*/,
      THR_D63_PRED /*D63_PRED*/,
      THR_TM /*TM_PRED*/,
Yaowu Xu's avatar
Yaowu Xu committed
426
      THR_B_PRED /*I4X4_PRED*/,
John Koleszar's avatar
John Koleszar committed
427
428
    };
    cpi->mode_chosen_counts[kf_mode_index[mb_mode]]++;
429
#endif
John Koleszar's avatar
John Koleszar committed
430
431
432
433
434
435
436
  } else {
    /*
            // Reduce the activation RD thresholds for the best choice mode
            if ((cpi->rd_baseline_thresh[mb_mode_index] > 0) &&
                (cpi->rd_baseline_thresh[mb_mode_index] < (INT_MAX >> 2)))
            {
                int best_adjustment = (cpi->rd_thresh_mult[mb_mode_index] >> 2);
Adrian Grange's avatar
Adrian Grange committed
437

John Koleszar's avatar
John Koleszar committed
438
439
440
441
442
443
444
445
                cpi->rd_thresh_mult[mb_mode_index] =
                        (cpi->rd_thresh_mult[mb_mode_index]
                         >= (MIN_THRESHMULT + best_adjustment)) ?
                                cpi->rd_thresh_mult[mb_mode_index] - best_adjustment :
                                MIN_THRESHMULT;
                cpi->rd_threshes[mb_mode_index] =
                        (cpi->rd_baseline_thresh[mb_mode_index] >> 7)
                        * cpi->rd_thresh_mult[mb_mode_index];
Adrian Grange's avatar
Adrian Grange committed
446

John Koleszar's avatar
John Koleszar committed
447
448
449
450
            }
    */
    // Note how often each mode chosen as best
    cpi->mode_chosen_counts[mb_mode_index]++;
Deb Mukherjee's avatar
Deb Mukherjee committed
451
452
453
454
455
456
457
458
459
460
461
462
    if (mbmi->mode == SPLITMV || mbmi->mode == NEWMV) {
      int_mv best_mv, best_second_mv;
      MV_REFERENCE_FRAME rf = mbmi->ref_frame;
      best_mv.as_int = ctx->best_ref_mv.as_int;
      best_second_mv.as_int = ctx->second_best_ref_mv.as_int;
      if (mbmi->mode == NEWMV) {
        best_mv.as_int = mbmi->ref_mvs[rf][0].as_int;
        best_second_mv.as_int = mbmi->ref_mvs[mbmi->second_ref_frame][0].as_int;
      }
      mbmi->best_mv.as_int = best_mv.as_int;
      mbmi->best_second_mv.as_int = best_second_mv.as_int;
      vp9_update_nmv_count(cpi, x, &best_mv, &best_second_mv);
463
    }
Jingning Han's avatar
Jingning Han committed
464

465
466
467
468
469
    if (bsize > BLOCK_SIZE_SB8X8 && mbmi->mode == NEWMV) {
      int i, j;
      for (j = 0; j < bh; ++j)
        for (i = 0; i < bw; ++i)
          xd->mode_info_context[mis * j + i].mbmi = *mbmi;
Deb Mukherjee's avatar
Deb Mukherjee committed
470
    }
471

472
    if (cpi->common.mcomp_filter_type == SWITCHABLE &&
473
        is_inter_mode(mbmi->mode)) {
474
475
476
477
      ++cpi->switchable_interp_count
          [vp9_get_pred_context(&cpi->common, xd, PRED_SWITCHABLE_INTERP)]
          [vp9_switchable_interp_map[mbmi->interp_filter]];
    }
Adrian Grange's avatar
Adrian Grange committed
478

479
480
481
    cpi->rd_comp_pred_diff[SINGLE_PREDICTION_ONLY] += ctx->single_pred_diff;
    cpi->rd_comp_pred_diff[COMP_PREDICTION_ONLY]   += ctx->comp_pred_diff;
    cpi->rd_comp_pred_diff[HYBRID_PREDICTION]      += ctx->hybrid_pred_diff;
John Koleszar's avatar
John Koleszar committed
482
  }
Adrian Grange's avatar
Adrian Grange committed
483
484
}

485
static unsigned find_seg_id(uint8_t *buf, BLOCK_SIZE_TYPE bsize,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
486
                            int start_y, int height, int start_x, int width) {
487
  const int bw = 1 << mi_width_log2(bsize), bh = 1 << mi_height_log2(bsize);
488
489
  const int end_x = MIN(start_x + bw, width);
  const int end_y = MIN(start_y + bh, height);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
490
491
492
493
494
495
496
497
498
499
500
501
502
  int x, y;
  unsigned seg_id = -1;

  buf += width * start_y;
  for (y = start_y; y < end_y; y++, buf += width) {
    for (x = start_x; x < end_x; x++) {
      seg_id = MIN(seg_id, buf[x]);
    }
  }

  return seg_id;
}

John Koleszar's avatar
John Koleszar committed
503
504
505
void vp9_setup_src_planes(MACROBLOCK *x,
                          const YV12_BUFFER_CONFIG *src,
                          int mb_row, int mb_col) {
506
507
508
509
510
511
512
513
514
515
516
517
518
  uint8_t *buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
                         src->alpha_buffer};
  int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
                    src->alpha_stride};
  int i;

  for (i = 0; i < MAX_MB_PLANE; i++) {
    setup_pred_plane(&x->plane[i].src,
                     buffers[i], strides[i],
                     mb_row, mb_col, NULL,
                     x->e_mbd.plane[i].subsampling_x,
                     x->e_mbd.plane[i].subsampling_y);
  }
John Koleszar's avatar
John Koleszar committed
519
520
}

Ronald S. Bultje's avatar
Ronald S. Bultje committed
521
static void set_offsets(VP9_COMP *cpi,
522
                        int mi_row, int mi_col, BLOCK_SIZE_TYPE bsize) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
523
524
525
526
527
  MACROBLOCK *const x = &cpi->mb;
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *mbmi;
  const int dst_fb_idx = cm->new_fb_idx;
528
529
  const int idx_str = xd->mode_info_stride * mi_row + mi_col;
  const int bw = 1 << mi_width_log2(bsize), bh = 1 << mi_height_log2(bsize);
Jingning Han's avatar
Jingning Han committed
530
531
  const int mb_row = mi_row >> 1;
  const int mb_col = mi_col >> 1;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
532
  const int idx_map = mb_row * cm->mb_cols + mb_col;
533
  int i;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
534
535

  // entropy context structures
536
537
  for (i = 0; i < MAX_MB_PLANE; i++) {
    xd->plane[i].above_context = cm->above_context[i] +
Jingning Han's avatar
Jingning Han committed
538
        (mi_col * 2 >>  xd->plane[i].subsampling_x);
539
    xd->plane[i].left_context = cm->left_context[i] +
Jingning Han's avatar
Jingning Han committed
540
        (((mi_row * 2) & 15) >> xd->plane[i].subsampling_y);
541
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
542

543
  // partition contexts
544
  set_partition_seg_context(cm, xd, mi_row, mi_col);
545

Ronald S. Bultje's avatar
Ronald S. Bultje committed
546
547
548
549
550
551
552
553
554
555
556
  // Activity map pointer
  x->mb_activity_ptr = &cpi->mb_activity_map[idx_map];
  x->active_ptr = cpi->active_map + idx_map;

  /* pointers to mode info contexts */
  x->partition_info          = x->pi + idx_str;
  xd->mode_info_context      = cm->mi + idx_str;
  mbmi = &xd->mode_info_context->mbmi;
  xd->prev_mode_info_context = cm->prev_mi + idx_str;

  // Set up destination pointers
557
  setup_dst_planes(xd, &cm->yv12_fb[dst_fb_idx], mi_row, mi_col);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
558
559
560

  /* Set up limit values for MV components to prevent them from
   * extending beyond the UMV borders assuming 16x16 block size */
561
562
563
564
565
566
  x->mv_row_min = -((mi_row * MI_SIZE) + VP9BORDERINPIXELS - VP9_INTERP_EXTEND);
  x->mv_col_min = -((mi_col * MI_SIZE) + VP9BORDERINPIXELS - VP9_INTERP_EXTEND);
  x->mv_row_max = ((cm->mi_rows - mi_row) * MI_SIZE +
                   (VP9BORDERINPIXELS - MI_SIZE * bh - VP9_INTERP_EXTEND));
  x->mv_col_max = ((cm->mi_cols - mi_col) * MI_SIZE +
                   (VP9BORDERINPIXELS - MI_SIZE * bw - VP9_INTERP_EXTEND));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
567
568

  // Set up distance of MB to edge of frame in 1/8th pel units
569
570
  assert(!(mi_col & (bw - 1)) && !(mi_row & (bh - 1)));
  set_mi_row_col(cm, xd, mi_row, bh, mi_col, bw);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
571
572

  /* set up source buffers */
573
  vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
574
575
576
577
578
579
580

  /* R/D setup */
  x->rddiv = cpi->RDDIV;
  x->rdmult = cpi->RDMULT;

  /* segment ID */
  if (xd->segmentation_enabled) {
581
582
583
584
585
    uint8_t *map = xd->update_mb_segmentation_map ? cpi->segmentation_map
                                                  : cm->last_frame_seg_map;
    mbmi->segment_id = find_seg_id(map, bsize, mi_row,
                                   cm->mi_rows, mi_col, cm->mi_cols);

586
    assert(mbmi->segment_id <= (MAX_MB_SEGMENTS-1));
Ronald S. Bultje's avatar
Ronald S. Bultje committed
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
    vp9_mb_init_quantizer(cpi, x);

    if (xd->segmentation_enabled && cpi->seg0_cnt > 0 &&
        !vp9_segfeature_active(xd, 0, SEG_LVL_REF_FRAME) &&
        vp9_segfeature_active(xd, 1, SEG_LVL_REF_FRAME) &&
        vp9_check_segref(xd, 1, INTRA_FRAME)  +
        vp9_check_segref(xd, 1, LAST_FRAME)   +
        vp9_check_segref(xd, 1, GOLDEN_FRAME) +
        vp9_check_segref(xd, 1, ALTREF_FRAME) == 1) {
      cpi->seg0_progress = (cpi->seg0_idx << 16) / cpi->seg0_cnt;
    } else {
      const int y = mb_row & ~3;
      const int x = mb_col & ~3;
      const int p16 = ((mb_row & 1) << 1) +  (mb_col & 1);
      const int p32 = ((mb_row & 2) << 2) + ((mb_col & 2) << 1);
602
      const int tile_progress =
Jingning Han's avatar
Jingning Han committed
603
          cm->cur_tile_mi_col_start * cm->mb_rows >> 1;
604
      const int mb_cols =
Jingning Han's avatar
Jingning Han committed
605
          (cm->cur_tile_mi_col_end - cm->cur_tile_mi_col_start) >> 1;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
606
607

      cpi->seg0_progress =
608
          ((y * mb_cols + x * 4 + p32 + p16 + tile_progress) << 16) / cm->MBs;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
609
610
611
612
613
614
    }
  } else {
    mbmi->segment_id = 0;
  }
}

615
static void pick_sb_modes(VP9_COMP *cpi, int mi_row, int mi_col,
616
617
                          TOKENEXTRA **tp, int *totalrate, int *totaldist,
                          BLOCK_SIZE_TYPE bsize, PICK_MODE_CONTEXT *ctx) {
618
619
620
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
621

622
623
624
625
626
627
#if CONFIG_AB4X4
  if (bsize < BLOCK_SIZE_SB8X8)
    if (xd->ab_index != 0)
      return;
#endif

628
  set_offsets(cpi, mi_row, mi_col, bsize);
629
  xd->mode_info_context->mbmi.sb_type = bsize;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
630
  if (cpi->oxcf.tuning == VP8_TUNE_SSIM)
631
    vp9_activity_masking(cpi, x);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
632
633
634

  /* Find best coding mode & reconstruct the MB so it is available
   * as a predictor for MBs that follow in the SB */
Ronald S. Bultje's avatar
Ronald S. Bultje committed
635
  if (cm->frame_type == KEY_FRAME) {
636
    vp9_rd_pick_intra_mode_sb(cpi, x, totalrate, totaldist, bsize, ctx);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
637
  } else {
638
    vp9_rd_pick_inter_mode_sb(cpi, x, mi_row, mi_col, totalrate, totaldist,
639
                              bsize, ctx);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
640
641
  }
}
Adrian Grange's avatar
Adrian Grange committed
642

643
static void update_stats(VP9_COMP *cpi, int mi_row, int mi_col) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
644
645
646
647
648
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  MODE_INFO *mi = xd->mode_info_context;
  MB_MODE_INFO *const mbmi = &mi->mbmi;
Adrian Grange's avatar
Adrian Grange committed
649

Paul Wilkins's avatar
Paul Wilkins committed
650
  if (cm->frame_type != KEY_FRAME) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
651
    int segment_id, seg_ref_active;
John Koleszar's avatar
John Koleszar committed
652

Ronald S. Bultje's avatar
Ronald S. Bultje committed
653
654
    if (mbmi->ref_frame) {
      int pred_context = vp9_get_pred_context(cm, xd, PRED_COMP);
655

Ronald S. Bultje's avatar
Ronald S. Bultje committed
656
657
658
659
      if (mbmi->second_ref_frame <= INTRA_FRAME)
        cpi->single_pred_count[pred_context]++;
      else
        cpi->comp_pred_count[pred_context]++;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
660
    }
Adrian Grange's avatar
Adrian Grange committed
661

Ronald S. Bultje's avatar
Ronald S. Bultje committed
662
663
664
665
666
667
668
669
670
671
672
673
674
675
    // If we have just a single reference frame coded for a segment then
    // exclude from the reference frame counts used to work out
    // probabilities. NOTE: At the moment we dont support custom trees
    // for the reference frame coding for each segment but this is a
    // possible future action.
    segment_id = mbmi->segment_id;
    seg_ref_active = vp9_segfeature_active(xd, segment_id,
                                           SEG_LVL_REF_FRAME);
    if (!seg_ref_active ||
        ((vp9_check_segref(xd, segment_id, INTRA_FRAME) +
          vp9_check_segref(xd, segment_id, LAST_FRAME) +
          vp9_check_segref(xd, segment_id, GOLDEN_FRAME) +
          vp9_check_segref(xd, segment_id, ALTREF_FRAME)) > 1)) {
      cpi->count_mb_ref_frame_usage[mbmi->ref_frame]++;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
676
    }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
677
678
679
680
681
    // Count of last ref frame 0,0 usage
    if ((mbmi->mode == ZEROMV) && (mbmi->ref_frame == LAST_FRAME))
      cpi->inter_zz_count++;
  }
}
John Koleszar's avatar
John Koleszar committed
682

683
684
685
// TODO(jingning): the variables used here are little complicated. need further
// refactoring on organizing the the temporary buffers, when recursive
// partition down to 4x4 block size is enabled.
686
687
688
static PICK_MODE_CONTEXT *get_block_context(MACROBLOCK *x,
                                            BLOCK_SIZE_TYPE bsize) {
  MACROBLOCKD *const xd = &x->e_mbd;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
689

690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
  switch (bsize) {
    case BLOCK_SIZE_SB64X64:
      return &x->sb64_context;
    case BLOCK_SIZE_SB64X32:
      return &x->sb64x32_context[xd->sb_index];
    case BLOCK_SIZE_SB32X64:
      return &x->sb32x64_context[xd->sb_index];
    case BLOCK_SIZE_SB32X32:
      return &x->sb32_context[xd->sb_index];
    case BLOCK_SIZE_SB32X16:
      return &x->sb32x16_context[xd->sb_index][xd->mb_index];
    case BLOCK_SIZE_SB16X32:
      return &x->sb16x32_context[xd->sb_index][xd->mb_index];
    case BLOCK_SIZE_MB16X16:
      return &x->mb_context[xd->sb_index][xd->mb_index];
705
706
707
708
709
    case BLOCK_SIZE_SB16X8:
      return &x->sb16x8_context[xd->sb_index][xd->mb_index][xd->b_index];
    case BLOCK_SIZE_SB8X16:
      return &x->sb8x16_context[xd->sb_index][xd->mb_index][xd->b_index];
    case BLOCK_SIZE_SB8X8:
710
711
712
713
714
715
716
717
718
      return &x->sb8x8_context[xd->sb_index][xd->mb_index][xd->b_index];
#if CONFIG_AB4X4
    case BLOCK_SIZE_SB8X4:
      return &x->sb8x4_context[xd->sb_index][xd->mb_index][xd->b_index];
    case BLOCK_SIZE_SB4X8:
      return &x->sb4x8_context[xd->sb_index][xd->mb_index][xd->b_index];
    case BLOCK_SIZE_AB4X4:
      return &x->ab4x4_context[xd->sb_index][xd->mb_index][xd->b_index];
#endif
719
720
721
722
723
    default:
      assert(0);
      return NULL;
  }
}
Ronald S. Bultje's avatar
Ronald S. Bultje committed
724

725
726
727
728
729
730
731
732
733
734
static BLOCK_SIZE_TYPE *get_sb_partitioning(MACROBLOCK *x,
                                            BLOCK_SIZE_TYPE bsize) {
  MACROBLOCKD *xd = &x->e_mbd;
  switch (bsize) {
    case BLOCK_SIZE_SB64X64:
      return &x->sb64_partitioning;
    case BLOCK_SIZE_SB32X32:
      return &x->sb_partitioning[xd->sb_index];
    case BLOCK_SIZE_MB16X16:
      return &x->mb_partitioning[xd->sb_index][xd->mb_index];
735
736
737
738
#if CONFIG_AB4X4
    case BLOCK_SIZE_SB8X8:
      return &x->b_partitioning[xd->sb_index][xd->mb_index][xd->b_index];
#endif
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
    default:
      assert(0);
      return NULL;
  }
}

static void restore_context(VP9_COMP *cpi, int mi_row, int mi_col,
                            ENTROPY_CONTEXT a[16 * MAX_MB_PLANE],
                            ENTROPY_CONTEXT l[16 * MAX_MB_PLANE],
                            PARTITION_CONTEXT sa[8],
                            PARTITION_CONTEXT sl[8],
                            BLOCK_SIZE_TYPE bsize) {
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  int p;
  int bwl = b_width_log2(bsize), bw = 1 << bwl;
  int bhl = b_height_log2(bsize), bh = 1 << bhl;
  int mwl = mi_width_log2(bsize), mw = 1 << mwl;
  int mhl = mi_height_log2(bsize), mh = 1 << mhl;
  for (p = 0; p < MAX_MB_PLANE; p++) {
    vpx_memcpy(cm->above_context[p] +
               ((mi_col * 2) >> xd->plane[p].subsampling_x),
               a + bw * p,
               sizeof(ENTROPY_CONTEXT) * bw >> xd->plane[p].subsampling_x);
    vpx_memcpy(cm->left_context[p] +
               ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
               l + bh * p,
               sizeof(ENTROPY_CONTEXT) * bh >> xd->plane[p].subsampling_y);
  }
  vpx_memcpy(cm->above_seg_context + mi_col, sa,
             sizeof(PARTITION_CONTEXT) * mw);
  vpx_memcpy(cm->left_seg_context + (mi_row & MI_MASK), sl,
             sizeof(PARTITION_CONTEXT) * mh);
}

775
776
777
778
779
780
static void encode_b(VP9_COMP *cpi, TOKENEXTRA **tp,
                     int mi_row, int mi_col, int output_enabled,
                     BLOCK_SIZE_TYPE bsize, int sub_index) {
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
John Koleszar's avatar
John Koleszar committed
781

782
783
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
    return;
John Koleszar's avatar
John Koleszar committed
784

785
  if (sub_index != -1)
786
    *(get_sb_index(xd, bsize)) = sub_index;
787
788
789
790
791
792

#if CONFIG_AB4X4
  if (bsize < BLOCK_SIZE_SB8X8)
    if (xd->ab_index > 0)
      return;
#endif
793
794
  set_offsets(cpi, mi_row, mi_col, bsize);
  update_state(cpi, get_block_context(x, bsize), bsize, output_enabled);
Jingning Han's avatar
Jingning Han committed
795
  encode_superblock(cpi, tp, output_enabled, mi_row, mi_col, bsize);
John Koleszar's avatar
John Koleszar committed
796

797
798
  if (output_enabled) {
    update_stats(cpi, mi_row, mi_col);
799

800
801
    (*tp)->token = EOSB_TOKEN;
    (*tp)++;
John Koleszar's avatar
John Koleszar committed
802
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
803
804
}

805
806
static void encode_sb(VP9_COMP *cpi, TOKENEXTRA **tp,
                      int mi_row, int mi_col, int output_enabled,
807
                      BLOCK_SIZE_TYPE bsize) {
808
809
810
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
811
  BLOCK_SIZE_TYPE c1 = BLOCK_SIZE_SB8X8;
812
  const int bsl = b_width_log2(bsize), bs = (1 << bsl) / 4;
813
  int bwl, bhl;
814
  int UNINITIALIZED_IS_SAFE(pl);
815

816
817
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
    return;
818

819
820
821
822
823
824
825
#if CONFIG_AB4X4
  c1 = BLOCK_SIZE_AB4X4;
  if (bsize >= BLOCK_SIZE_SB8X8)
#else
  if (bsize > BLOCK_SIZE_SB8X8)
#endif
  {
826
    set_partition_seg_context(cm, xd, mi_row, mi_col);
827
828
    pl = partition_plane_context(xd, bsize);
    c1 = *(get_sb_partitioning(x, bsize));
829
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
830

831
  bwl = b_width_log2(c1), bhl = b_height_log2(c1);
832

833
  if (bsl == bwl && bsl == bhl) {
834
#if CONFIG_AB4X4
835
    if (output_enabled && bsize >= BLOCK_SIZE_SB8X8)
836
837
        cpi->partition_count[pl][PARTITION_NONE]++;
#else
838
    if (output_enabled && bsize > BLOCK_SIZE_SB8X8)
839
      cpi->partition_count[pl][PARTITION_NONE]++;
840
#endif
841
842
843
844
845
846
847
848
849
850
851
852
853
    encode_b(cpi, tp, mi_row, mi_col, output_enabled, c1, -1);
  } else if (bsl == bhl && bsl > bwl) {
    if (output_enabled)
      cpi->partition_count[pl][PARTITION_VERT]++;
    encode_b(cpi, tp, mi_row, mi_col,      output_enabled, c1, 0);
    encode_b(cpi, tp, mi_row, mi_col + bs, output_enabled, c1, 1);
  } else if (bsl == bwl && bsl > bhl) {
    if (output_enabled)
      cpi->partition_count[pl][PARTITION_HORZ]++;
    encode_b(cpi, tp, mi_row,      mi_col, output_enabled, c1, 0);
    encode_b(cpi, tp, mi_row + bs, mi_col, output_enabled, c1, 1);
  } else {
    BLOCK_SIZE_TYPE subsize;
854
855
    int i;

856
    assert(bwl < bsl && bhl < bsl);
857
    subsize = get_subsize(bsize, PARTITION_SPLIT);
858

859
860
861
    if (output_enabled)
      cpi->partition_count[pl][PARTITION_SPLIT]++;

Ronald S. Bultje's avatar
Ronald S. Bultje committed
862
    for (i = 0; i < 4; i++) {
863
      const int x_idx = i & 1, y_idx = i >> 1;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
864

865
      *(get_sb_index(xd, subsize)) = i;
866
      encode_sb(cpi, tp, mi_row + y_idx * bs, mi_col + x_idx * bs,
867
                output_enabled, subsize);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
868
869
    }
  }
870

871
872
873
874
#if CONFIG_AB4X4
  if (bsize >= BLOCK_SIZE_SB8X8 &&
      (bsize == BLOCK_SIZE_SB8X8 || bsl == bwl || bsl == bhl)) {
#else
875
876
  if (bsize > BLOCK_SIZE_SB8X8 &&
      (bsize == BLOCK_SIZE_MB16X16 || bsl == bwl || bsl == bhl)) {
877
#endif
878
    set_partition_seg_context(cm, xd, mi_row, mi_col);
879
    update_partition_context(xd, c1, bsize);
880
  }
Adrian Grange's avatar
Adrian Grange committed
881
}
John Koleszar's avatar
John Koleszar committed
882

883
884
885
886
887
888
889
890

// TODO(jingning,jimbankoski,rbultje): properly skip partition types that are
// unlikely to be selected depending on previously rate-distortion optimization
// results, for encoding speed-up.
static void rd_pick_partition(VP9_COMP *cpi, TOKENEXTRA **tp,
                              int mi_row, int mi_col,
                              BLOCK_SIZE_TYPE bsize,
                              int *rate, int *dist) {
891
892
893
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
894
  int bsl = b_width_log2(bsize), bs = 1 << bsl;
895
  int ms = bs / 2;
896
897
898
899
900
901
902
  ENTROPY_CONTEXT   l[16 * MAX_MB_PLANE], a[16 * MAX_MB_PLANE];
  PARTITION_CONTEXT sl[8], sa[8];
  TOKENEXTRA *tp_orig = *tp;
  int i, p, pl;
  BLOCK_SIZE_TYPE subsize;
  int srate = INT_MAX, sdist = INT_MAX;

903
904
905
906
907
908
909
910
#if CONFIG_AB4X4
  if (bsize < BLOCK_SIZE_SB8X8)
    if (xd->ab_index != 0) {
      *rate = 0;
      *dist = 0;
      return;
    }
#endif
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
  assert(mi_height_log2(bsize) == mi_width_log2(bsize));

  // buffer the above/left context information of the block in search.
  for (p = 0; p < MAX_MB_PLANE; ++p) {
    vpx_memcpy(a + bs * p, cm->above_context[p] +
               (mi_col * 2 >> xd->plane[p].subsampling_x),
               sizeof(ENTROPY_CONTEXT) * bs >> xd->plane[p].subsampling_x);
    vpx_memcpy(l + bs * p, cm->left_context[p] +
               ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
               sizeof(ENTROPY_CONTEXT) * bs >> xd->plane[p].subsampling_y);
  }
  vpx_memcpy(sa, cm->above_seg_context + mi_col,
             sizeof(PARTITION_CONTEXT) * ms);
  vpx_memcpy(sl, cm->left_seg_context + (mi_row & MI_MASK),
             sizeof(PARTITION_CONTEXT) * ms);

  // PARTITION_SPLIT
928
929
930
#if CONFIG_AB4X4
  if (bsize >= BLOCK_SIZE_SB8X8) {
#else
931
  if (bsize >= BLOCK_SIZE_MB16X16) {
932
#endif
933
934
935
936
937
938
939
    int r4 = 0, d4 = 0;
    subsize = get_subsize(bsize, PARTITION_SPLIT);
    *(get_sb_partitioning(x, bsize)) = subsize;

    for (i = 0; i < 4; ++i) {
      int x_idx = (i & 1) * (ms >> 1);
      int y_idx = (i >> 1) * (ms >> 1);
940
      int r = 0, d = 0;
941

942
      if ((mi_row + y_idx >= cm->mi_rows) || (mi_col + x_idx >= cm->mi_cols))
Ronald S. Bultje's avatar
Ronald S. Bultje committed
943
944
        continue;

945
946
947
      *(get_sb_index(xd, subsize)) = i;
      rd_pick_partition(cpi, tp, mi_row + y_idx, mi_col + x_idx, subsize,
                        &r, &d);
948

949
950
      r4 += r;
      d4 += d;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
951
    }
952
    set_partition_seg_context(cm, xd, mi_row, mi_col);
953
    pl = partition_plane_context(xd, bsize);
954
955
956
957
#if CONFIG_AB4X4
    if (r4 < INT_MAX)
      r4 += x->partition_cost[pl][PARTITION_SPLIT];
#else
958
    r4 += x->partition_cost[pl][PARTITION_SPLIT];
959
960
961
#endif
    assert(r4 >= 0);
    assert(d4 >= 0);
962
963
964
965
    srate = r4;
    sdist = d4;
    restore_context(cpi, mi_row, mi_col, a, l, sa, sl, bsize);
  }
966

967
968
  // PARTITION_HORZ
  if ((mi_col + ms <= cm->mi_cols) && (mi_row + (ms >> 1) <= cm-><