vp9_encodeframe.c 130 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
 */

Dmitry Kovalev's avatar
Dmitry Kovalev committed
11
12
13
14
#include <limits.h>
#include <math.h>
#include <stdio.h>

Jim Bankoski's avatar
Jim Bankoski committed
15
#include "./vp9_rtcd.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
16
17
18
19
#include "./vpx_config.h"

#include "vpx_ports/vpx_timer.h"

20
#include "vp9/common/vp9_common.h"
Yaowu Xu's avatar
Yaowu Xu committed
21
#include "vp9/common/vp9_entropy.h"
22
#include "vp9/common/vp9_entropymode.h"
23
#include "vp9/common/vp9_idct.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
24
25
26
#include "vp9/common/vp9_mvref_common.h"
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_quant_common.h"
27
#include "vp9/common/vp9_reconintra.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
28
#include "vp9/common/vp9_reconinter.h"
29
#include "vp9/common/vp9_seg_common.h"
30
#include "vp9/common/vp9_systemdependent.h"
31
#include "vp9/common/vp9_tile_common.h"
32

33
#include "vp9/encoder/vp9_aq_complexity.h"
Marco Paniconi's avatar
Marco Paniconi committed
34
35
#include "vp9/encoder/vp9_aq_cyclicrefresh.h"
#include "vp9/encoder/vp9_aq_variance.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
36
37
38
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_encodemv.h"
39
#include "vp9/encoder/vp9_extend.h"
40
#include "vp9/encoder/vp9_pickmode.h"
41
#include "vp9/encoder/vp9_rd.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
42
43
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/encoder/vp9_segmentation.h"
44
#include "vp9/encoder/vp9_tokenize.h"
45

46
47
48
49
50
51
#define GF_ZEROMV_ZBIN_BOOST 0
#define LF_ZEROMV_ZBIN_BOOST 0
#define MV_ZBIN_BOOST        0
#define SPLIT_MV_ZBIN_BOOST  0
#define INTRA_ZBIN_BOOST     0

Jim Bankoski's avatar
Jim Bankoski committed
52
static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t, int output_enabled,
53
54
                              int mi_row, int mi_col, BLOCK_SIZE bsize,
                              PICK_MODE_CONTEXT *ctx);
55

56
// Motion vector component magnitude threshold for defining fast motion.
57
#define FAST_MOTION_MV_THRESH 24
58

59
60
61
62
// 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.
63
64
65
66
67
68
69
70
71
72
73
static const uint8_t VP9_VAR_OFFS[64] = {
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128
};

74
static unsigned int get_sby_perpixel_variance(VP9_COMP *cpi,
75
                                              const struct buf_2d *ref,
76
                                              BLOCK_SIZE bs) {
77
78
79
  unsigned int sse;
  const unsigned int var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                                              VP9_VAR_OFFS, 0, &sse);
80
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
81
82
}

83
static unsigned int get_sby_perpixel_diff_variance(VP9_COMP *cpi,
84
85
                                                   const struct buf_2d *ref,
                                                   int mi_row, int mi_col,
86
                                                   BLOCK_SIZE bs) {
87
88
89
90
91
92
  const YV12_BUFFER_CONFIG *last = get_ref_frame_buffer(cpi, LAST_FRAME);
  const uint8_t* last_y = &last->y_buffer[mi_row * MI_SIZE * last->y_stride +
                                              mi_col * MI_SIZE];
  unsigned int sse;
  const unsigned int var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                                              last_y, last->y_stride, &sse);
93
94
95
96
97
98
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}

static BLOCK_SIZE get_rd_var_based_fixed_partition(VP9_COMP *cpi,
                                                   int mi_row,
                                                   int mi_col) {
99
  unsigned int var = get_sby_perpixel_diff_variance(cpi, &cpi->mb.plane[0].src,
100
101
102
                                                    mi_row, mi_col,
                                                    BLOCK_64X64);
  if (var < 8)
103
    return BLOCK_64X64;
104
  else if (var < 128)
105
    return BLOCK_32X32;
106
107
108
109
  else if (var < 2048)
    return BLOCK_16X16;
  else
    return BLOCK_8X8;
110
111
}

112
113
114
static BLOCK_SIZE get_nonrd_var_based_fixed_partition(VP9_COMP *cpi,
                                                      int mi_row,
                                                      int mi_col) {
115
  unsigned int var = get_sby_perpixel_diff_variance(cpi, &cpi->mb.plane[0].src,
116
117
                                                    mi_row, mi_col,
                                                    BLOCK_64X64);
118
  if (var < 4)
119
    return BLOCK_64X64;
120
  else if (var < 10)
121
122
    return BLOCK_32X32;
  else
123
    return BLOCK_16X16;
124
125
}

126
127
// Lighter version of set_offsets that only sets the mode info
// pointers.
128
static INLINE void set_modeinfo_offsets(VP9_COMMON *const cm,
129
130
131
                                        MACROBLOCKD *const xd,
                                        int mi_row,
                                        int mi_col) {
132
133
134
  const int idx_str = xd->mi_stride * mi_row + mi_col;
  xd->mi = cm->mi_grid_visible + idx_str;
  xd->mi[0] = cm->mi + idx_str;
135
136
137
138
139
140
141
142
143
144
145
146
}

static void set_offsets(VP9_COMP *cpi, const TileInfo *const tile,
                        int mi_row, int mi_col, BLOCK_SIZE bsize) {
  MACROBLOCK *const x = &cpi->mb;
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *mbmi;
  const int mi_width = num_8x8_blocks_wide_lookup[bsize];
  const int mi_height = num_8x8_blocks_high_lookup[bsize];
  const struct segmentation *const seg = &cm->seg;

147
  set_skip_context(xd, mi_row, mi_col);
148
149
150

  set_modeinfo_offsets(cm, xd, mi_row, mi_col);

151
  mbmi = &xd->mi[0]->mbmi;
152
153

  // Set up destination pointers.
154
  vp9_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

  // Set up limit values for MV components.
  // Mv beyond the range do not produce new/different prediction block.
  x->mv_row_min = -(((mi_row + mi_height) * MI_SIZE) + VP9_INTERP_EXTEND);
  x->mv_col_min = -(((mi_col + mi_width) * MI_SIZE) + VP9_INTERP_EXTEND);
  x->mv_row_max = (cm->mi_rows - mi_row) * MI_SIZE + VP9_INTERP_EXTEND;
  x->mv_col_max = (cm->mi_cols - mi_col) * MI_SIZE + VP9_INTERP_EXTEND;

  // Set up distance of MB to edge of frame in 1/8th pel units.
  assert(!(mi_col & (mi_width - 1)) && !(mi_row & (mi_height - 1)));
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width,
                 cm->mi_rows, cm->mi_cols);

  // Set up source buffers.
  vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col);

  // R/D setup.
Dmitry Kovalev's avatar
Dmitry Kovalev committed
172
173
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190

  // Setup segment ID.
  if (seg->enabled) {
    if (cpi->oxcf.aq_mode != VARIANCE_AQ) {
      const uint8_t *const map = seg->update_map ? cpi->segmentation_map
                                                 : cm->last_frame_seg_map;
      mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
    vp9_init_plane_quantizers(cpi, x);

    x->encode_breakout = cpi->segment_encode_breakout[mbmi->segment_id];
  } else {
    mbmi->segment_id = 0;
    x->encode_breakout = cpi->encode_breakout;
  }
}

191
192
193
static void duplicate_mode_info_in_sb(VP9_COMMON *cm, MACROBLOCKD *xd,
                                      int mi_row, int mi_col,
                                      BLOCK_SIZE bsize) {
194
195
196
197
198
199
  const int block_width = num_8x8_blocks_wide_lookup[bsize];
  const int block_height = num_8x8_blocks_high_lookup[bsize];
  int i, j;
  for (j = 0; j < block_height; ++j)
    for (i = 0; i < block_width; ++i) {
      if (mi_row + j < cm->mi_rows && mi_col + i < cm->mi_cols)
200
        xd->mi[j * xd->mi_stride + i] = xd->mi[0];
201
202
203
204
205
206
207
208
209
    }
}

static void set_block_size(VP9_COMP * const cpi,
                           int mi_row, int mi_col,
                           BLOCK_SIZE bsize) {
  if (cpi->common.mi_cols > mi_col && cpi->common.mi_rows > mi_row) {
    MACROBLOCKD *const xd = &cpi->mb.e_mbd;
    set_modeinfo_offsets(&cpi->common, xd, mi_row, mi_col);
210
    xd->mi[0]->mbmi.sb_type = bsize;
211
    duplicate_mode_info_in_sb(&cpi->common, xd, mi_row, mi_col, bsize);
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
  }
}

typedef struct {
  int64_t sum_square_error;
  int64_t sum_error;
  int count;
  int variance;
} var;

typedef struct {
  var none;
  var horz[2];
  var vert[2];
} partition_variance;

typedef struct {
  partition_variance part_variances;
  var split[4];
} v8x8;

typedef struct {
  partition_variance part_variances;
  v8x8 split[4];
} v16x16;

typedef struct {
  partition_variance part_variances;
  v16x16 split[4];
} v32x32;

typedef struct {
  partition_variance part_variances;
  v32x32 split[4];
} v64x64;

typedef struct {
  partition_variance *part_variances;
  var *split[4];
} variance_node;

typedef enum {
  V16X16,
  V32X32,
  V64X64,
} TREE_LEVEL;

static void tree_to_node(void *data, BLOCK_SIZE bsize, variance_node *node) {
  int i;
261
262
  node->part_variances = NULL;
  vpx_memset(node->split, 0, sizeof(node->split));
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
  switch (bsize) {
    case BLOCK_64X64: {
      v64x64 *vt = (v64x64 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_32X32: {
      v32x32 *vt = (v32x32 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_16X16: {
      v16x16 *vt = (v16x16 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_8X8: {
      v8x8 *vt = (v8x8 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i];
      break;
    }
    default: {
      assert(0);
294
      break;
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
    }
  }
}

// Set variance values given sum square error, sum error, count.
static void fill_variance(int64_t s2, int64_t s, int c, var *v) {
  v->sum_square_error = s2;
  v->sum_error = s;
  v->count = c;
  if (c > 0)
    v->variance = (int)(256 *
                        (v->sum_square_error - v->sum_error * v->sum_error /
                         v->count) / v->count);
  else
    v->variance = 0;
}

void sum_2_variances(const var *a, const var *b, var *r) {
  fill_variance(a->sum_square_error + b->sum_square_error,
                a->sum_error + b->sum_error, a->count + b->count, r);
}

static void fill_variance_tree(void *data, BLOCK_SIZE bsize) {
  variance_node node;
  tree_to_node(data, bsize, &node);
  sum_2_variances(node.split[0], node.split[1], &node.part_variances->horz[0]);
  sum_2_variances(node.split[2], node.split[3], &node.part_variances->horz[1]);
  sum_2_variances(node.split[0], node.split[2], &node.part_variances->vert[0]);
  sum_2_variances(node.split[1], node.split[3], &node.part_variances->vert[1]);
  sum_2_variances(&node.part_variances->vert[0], &node.part_variances->vert[1],
                  &node.part_variances->none);
}

static int set_vt_partitioning(VP9_COMP *cpi,
                               void *data,
                               BLOCK_SIZE bsize,
                               int mi_row,
Yaowu Xu's avatar
Yaowu Xu committed
332
                               int mi_col) {
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
  VP9_COMMON * const cm = &cpi->common;
  variance_node vt;
  const int block_width = num_8x8_blocks_wide_lookup[bsize];
  const int block_height = num_8x8_blocks_high_lookup[bsize];
  // TODO(debargha): Choose this more intelligently.
  const int64_t threshold_multiplier = 25;
  int64_t threshold = threshold_multiplier * cpi->common.base_qindex;
  assert(block_height == block_width);

  tree_to_node(data, bsize, &vt);

  // Split none is available only if we have more than half a block size
  // in width and height inside the visible image.
  if (mi_col + block_width / 2 < cm->mi_cols &&
      mi_row + block_height / 2 < cm->mi_rows &&
      vt.part_variances->none.variance < threshold) {
Yaowu Xu's avatar
Yaowu Xu committed
349
    set_block_size(cpi, mi_row, mi_col, bsize);
350
351
352
353
354
355
356
357
    return 1;
  }

  // Vertical split is available on all but the bottom border.
  if (mi_row + block_height / 2 < cm->mi_rows &&
      vt.part_variances->vert[0].variance < threshold &&
      vt.part_variances->vert[1].variance < threshold) {
    BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_VERT);
Yaowu Xu's avatar
Yaowu Xu committed
358
359
    set_block_size(cpi, mi_row, mi_col, subsize);
    set_block_size(cpi, mi_row, mi_col + block_width / 2, subsize);
360
361
362
363
364
365
366
367
    return 1;
  }

  // Horizontal split is available on all but the right border.
  if (mi_col + block_width / 2 < cm->mi_cols &&
      vt.part_variances->horz[0].variance < threshold &&
      vt.part_variances->horz[1].variance < threshold) {
    BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_HORZ);
Yaowu Xu's avatar
Yaowu Xu committed
368
369
    set_block_size(cpi, mi_row, mi_col, subsize);
    set_block_size(cpi, mi_row + block_height / 2, mi_col, subsize);
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
    return 1;
  }
  return 0;
}

// TODO(debargha): Fix this function and make it work as expected.
static void choose_partitioning(VP9_COMP *cpi,
                                const TileInfo *const tile,
                                int mi_row, int mi_col) {
  VP9_COMMON * const cm = &cpi->common;
  MACROBLOCK *x = &cpi->mb;
  MACROBLOCKD *xd = &cpi->mb.e_mbd;

  int i, j, k;
  v64x64 vt;
  uint8_t *s;
  const uint8_t *d;
  int sp;
  int dp;
  int pixels_wide = 64, pixels_high = 64;
  int_mv nearest_mv, near_mv;
  const YV12_BUFFER_CONFIG *yv12 = get_ref_frame_buffer(cpi, LAST_FRAME);
  const struct scale_factors *const sf = &cm->frame_refs[LAST_FRAME - 1].sf;

  vp9_zero(vt);
  set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64);

  if (xd->mb_to_right_edge < 0)
    pixels_wide += (xd->mb_to_right_edge >> 3);
  if (xd->mb_to_bottom_edge < 0)
    pixels_high += (xd->mb_to_bottom_edge >> 3);

  s = x->plane[0].src.buf;
  sp = x->plane[0].src.stride;

  if (cm->frame_type != KEY_FRAME) {
    vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col, sf);

408
409
    xd->mi[0]->mbmi.ref_frame[0] = LAST_FRAME;
    xd->mi[0]->mbmi.sb_type = BLOCK_64X64;
410
    vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv,
411
                          xd->mi[0]->mbmi.ref_mvs[LAST_FRAME],
412
413
                          &nearest_mv, &near_mv);

414
    xd->mi[0]->mbmi.mv[0] = nearest_mv;
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
    vp9_build_inter_predictors_sby(xd, mi_row, mi_col, BLOCK_64X64);

    d = xd->plane[0].dst.buf;
    dp = xd->plane[0].dst.stride;
  } else {
    d = VP9_VAR_OFFS;
    dp = 0;
  }

  // Fill in the entire tree of 8x8 variances for splits.
  for (i = 0; i < 4; i++) {
    const int x32_idx = ((i & 1) << 5);
    const int y32_idx = ((i >> 1) << 5);
    for (j = 0; j < 4; j++) {
      const int x16_idx = x32_idx + ((j & 1) << 4);
      const int y16_idx = y32_idx + ((j >> 1) << 4);
      v16x16 *vst = &vt.split[i].split[j];
      for (k = 0; k < 4; k++) {
        int x_idx = x16_idx + ((k & 1) << 3);
        int y_idx = y16_idx + ((k >> 1) << 3);
        unsigned int sse = 0;
        int sum = 0;
        if (x_idx < pixels_wide && y_idx < pixels_high)
438
439
          vp9_get8x8var(s + y_idx * sp + x_idx, sp,
                        d + y_idx * dp + x_idx, dp, &sse, &sum);
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
        fill_variance(sse, sum, 64, &vst->split[k].part_variances.none);
      }
    }
  }
  // Fill the rest of the variance tree by summing split partition values.
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 4; j++) {
      fill_variance_tree(&vt.split[i].split[j], BLOCK_16X16);
    }
    fill_variance_tree(&vt.split[i], BLOCK_32X32);
  }
  fill_variance_tree(&vt, BLOCK_64X64);

  // Now go through the entire structure,  splitting every block size until
  // we get to one that's got a variance lower than our threshold,  or we
  // hit 8x8.
Yaowu Xu's avatar
Yaowu Xu committed
456
457
  if (!set_vt_partitioning(cpi, &vt, BLOCK_64X64,
                           mi_row, mi_col)) {
458
459
460
    for (i = 0; i < 4; ++i) {
      const int x32_idx = ((i & 1) << 2);
      const int y32_idx = ((i >> 1) << 2);
Yaowu Xu's avatar
Yaowu Xu committed
461
462
      if (!set_vt_partitioning(cpi, &vt.split[i], BLOCK_32X32,
                               (mi_row + y32_idx), (mi_col + x32_idx))) {
463
464
465
466
467
468
469
470
471
        for (j = 0; j < 4; ++j) {
          const int x16_idx = ((j & 1) << 1);
          const int y16_idx = ((j >> 1) << 1);
          // NOTE: This is a temporary hack to disable 8x8 partitions,
          // since it works really bad - possibly due to a bug
#define DISABLE_8X8_VAR_BASED_PARTITION
#ifdef DISABLE_8X8_VAR_BASED_PARTITION
          if (mi_row + y32_idx + y16_idx + 1 < cm->mi_rows &&
              mi_row + x32_idx + x16_idx + 1 < cm->mi_cols) {
Yaowu Xu's avatar
Yaowu Xu committed
472
            set_block_size(cpi,
473
474
475
476
477
478
479
                           (mi_row + y32_idx + y16_idx),
                           (mi_col + x32_idx + x16_idx),
                           BLOCK_16X16);
          } else {
            for (k = 0; k < 4; ++k) {
              const int x8_idx = (k & 1);
              const int y8_idx = (k >> 1);
Yaowu Xu's avatar
Yaowu Xu committed
480
              set_block_size(cpi,
481
482
483
484
485
486
487
488
489
490
491
492
493
                             (mi_row + y32_idx + y16_idx + y8_idx),
                             (mi_col + x32_idx + x16_idx + x8_idx),
                             BLOCK_8X8);
            }
          }
#else
          if (!set_vt_partitioning(cpi, &vt.split[i].split[j], tile,
                                   BLOCK_16X16,
                                   (mi_row + y32_idx + y16_idx),
                                   (mi_col + x32_idx + x16_idx), 2)) {
            for (k = 0; k < 4; ++k) {
              const int x8_idx = (k & 1);
              const int y8_idx = (k >> 1);
Yaowu Xu's avatar
Yaowu Xu committed
494
              set_block_size(cpi,
495
496
497
498
499
500
501
502
503
504
505
506
                             (mi_row + y32_idx + y16_idx + y8_idx),
                             (mi_col + x32_idx + x16_idx + x8_idx),
                             BLOCK_8X8);
            }
          }
#endif
        }
      }
    }
  }
}

Jim Bankoski's avatar
Jim Bankoski committed
507
static void update_state(VP9_COMP *cpi, PICK_MODE_CONTEXT *ctx,
508
509
                         int mi_row, int mi_col, BLOCK_SIZE bsize,
                         int output_enabled) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
510
  int i, x_idx, y;
511
  VP9_COMMON *const cm = &cpi->common;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
512
  RD_OPT *const rd_opt = &cpi->rd;
513
514
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
515
516
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
John Koleszar's avatar
John Koleszar committed
517
  MODE_INFO *mi = &ctx->mic;
518
519
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  MODE_INFO *mi_addr = xd->mi[0];
520
  const struct segmentation *const seg = &cm->seg;
521

522
  const int mis = cm->mi_stride;
Jim Bankoski's avatar
Jim Bankoski committed
523
  const int mi_width = num_8x8_blocks_wide_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
524
  const int mi_height = num_8x8_blocks_high_lookup[bsize];
525
  int max_plane;
Adrian Grange's avatar
Adrian Grange committed
526

527
  assert(mi->mbmi.sb_type == bsize);
528

529
530
  *mi_addr = *mi;

Paul Wilkins's avatar
Paul Wilkins committed
531
532
533
534
535
536
537
538
539
540
541
  // If segmentation in use
  if (seg->enabled && output_enabled) {
    // For in frame complexity AQ copy the segment id from the segment map.
    if (cpi->oxcf.aq_mode == COMPLEXITY_AQ) {
      const uint8_t *const map = seg->update_map ? cpi->segmentation_map
                                                 : cm->last_frame_seg_map;
      mi_addr->mbmi.segment_id =
        vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
    // Else for cyclic refresh mode update the segment map, set the segment id
    // and then update the quantizer.
542
    if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) {
Paul Wilkins's avatar
Paul Wilkins committed
543
544
545
      vp9_cyclic_refresh_update_segment(cpi, &xd->mi[0]->mbmi,
                                        mi_row, mi_col, bsize, 1);
    }
546
  }
547

548
549
  max_plane = is_inter_block(mbmi) ? MAX_MB_PLANE : 1;
  for (i = 0; i < max_plane; ++i) {
550
    p[i].coeff = ctx->coeff_pbuf[i][1];
551
    p[i].qcoeff = ctx->qcoeff_pbuf[i][1];
552
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1];
553
    p[i].eobs = ctx->eobs_pbuf[i][1];
554
555
  }

556
557
  for (i = max_plane; i < MAX_MB_PLANE; ++i) {
    p[i].coeff = ctx->coeff_pbuf[i][2];
558
    p[i].qcoeff = ctx->qcoeff_pbuf[i][2];
559
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][2];
560
    p[i].eobs = ctx->eobs_pbuf[i][2];
561
562
  }

John Koleszar's avatar
John Koleszar committed
563
564
  // Restore the coding context of the MB to that that was in place
  // when the mode was picked for it
565
566
  for (y = 0; y < mi_height; y++)
    for (x_idx = 0; x_idx < mi_width; x_idx++)
James Zern's avatar
James Zern committed
567
      if ((xd->mb_to_right_edge >> (3 + MI_SIZE_LOG2)) + mi_width > x_idx
568
        && (xd->mb_to_bottom_edge >> (3 + MI_SIZE_LOG2)) + mi_height > y) {
569
        xd->mi[x_idx + y * mis] = mi_addr;
570
      }
571

572
  if (cpi->oxcf.aq_mode)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
573
    vp9_init_plane_quantizers(cpi, x);
574

575
576
  // FIXME(rbultje) I'm pretty sure this should go to the end of this block
  // (i.e. after the output_enabled)
577
578
  if (bsize < BLOCK_32X32) {
    if (bsize < BLOCK_16X16)
579
580
      ctx->tx_rd_diff[ALLOW_16X16] = ctx->tx_rd_diff[ALLOW_8X8];
    ctx->tx_rd_diff[ALLOW_32X32] = ctx->tx_rd_diff[ALLOW_16X16];
Ronald S. Bultje's avatar
Ronald S. Bultje committed
581
  }
Adrian Grange's avatar
Adrian Grange committed
582

583
  if (is_inter_block(mbmi) && mbmi->sb_type < BLOCK_8X8) {
584
585
    mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int;
    mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int;
John Koleszar's avatar
John Koleszar committed
586
587
  }

588
  x->skip = ctx->skip;
589
  vpx_memcpy(x->zcoeff_blk[mbmi->tx_size], ctx->zcoeff_blk,
590
             sizeof(uint8_t) * ctx->num_4x4_blk);
591

Ronald S. Bultje's avatar
Ronald S. Bultje committed
592
593
594
  if (!output_enabled)
    return;

595
  if (!vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
596
    for (i = 0; i < TX_MODES; i++)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
597
      rd_opt->tx_select_diff[i] += ctx->tx_rd_diff[i];
598
599
  }

600
#if CONFIG_INTERNAL_STATS
601
  if (frame_is_intra_only(cm)) {
John Koleszar's avatar
John Koleszar committed
602
    static const int kf_mode_index[] = {
603
604
605
606
      THR_DC        /*DC_PRED*/,
      THR_V_PRED    /*V_PRED*/,
      THR_H_PRED    /*H_PRED*/,
      THR_D45_PRED  /*D45_PRED*/,
John Koleszar's avatar
John Koleszar committed
607
608
609
      THR_D135_PRED /*D135_PRED*/,
      THR_D117_PRED /*D117_PRED*/,
      THR_D153_PRED /*D153_PRED*/,
Dmitry Kovalev's avatar
Dmitry Kovalev committed
610
      THR_D207_PRED /*D207_PRED*/,
611
612
      THR_D63_PRED  /*D63_PRED*/,
      THR_TM        /*TM_PRED*/,
John Koleszar's avatar
John Koleszar committed
613
    };
614
    ++cpi->mode_chosen_counts[kf_mode_index[mbmi->mode]];
John Koleszar's avatar
John Koleszar committed
615
616
  } else {
    // Note how often each mode chosen as best
617
618
619
620
    ++cpi->mode_chosen_counts[ctx->best_mode_index];
  }
#endif
  if (!frame_is_intra_only(cm)) {
621
    if (is_inter_block(mbmi)) {
622
      vp9_update_mv_count(cm, xd);
623
624
625
626
627

      if (cm->interp_filter == SWITCHABLE) {
        const int ctx = vp9_get_pred_context_switchable_interp(xd);
        ++cm->counts.switchable_interp[ctx][mbmi->interp_filter];
      }
628
    }
Adrian Grange's avatar
Adrian Grange committed
629

Dmitry Kovalev's avatar
Dmitry Kovalev committed
630
631
632
    rd_opt->comp_pred_diff[SINGLE_REFERENCE] += ctx->single_pred_diff;
    rd_opt->comp_pred_diff[COMPOUND_REFERENCE] += ctx->comp_pred_diff;
    rd_opt->comp_pred_diff[REFERENCE_MODE_SELECT] += ctx->hybrid_pred_diff;
633

634
    for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
635
      rd_opt->filter_diff[i] += ctx->best_filter_diff[i];
John Koleszar's avatar
John Koleszar committed
636
  }
Adrian Grange's avatar
Adrian Grange committed
637
638
}

Jim Bankoski's avatar
Jim Bankoski committed
639
void vp9_setup_src_planes(MACROBLOCK *x, const YV12_BUFFER_CONFIG *src,
640
                          int mi_row, int mi_col) {
641
642
  uint8_t *const buffers[3] = {src->y_buffer, src->u_buffer, src->v_buffer };
  const int strides[3] = {src->y_stride, src->uv_stride, src->uv_stride };
643
644
  int i;

645
646
647
  // Set current frame pointer.
  x->e_mbd.cur_buf = src;

648
649
  for (i = 0; i < MAX_MB_PLANE; i++)
    setup_pred_plane(&x->plane[i].src, buffers[i], strides[i], mi_row, mi_col,
Jim Bankoski's avatar
Jim Bankoski committed
650
                     NULL, x->e_mbd.plane[i].subsampling_x,
651
                     x->e_mbd.plane[i].subsampling_y);
John Koleszar's avatar
John Koleszar committed
652
653
}

654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
static void set_mode_info_seg_skip(MACROBLOCK *x, TX_MODE tx_mode, int *rate,
                                   int64_t *dist, BLOCK_SIZE bsize) {
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  INTERP_FILTER filter_ref;

  if (xd->up_available)
    filter_ref = xd->mi[-xd->mi_stride]->mbmi.interp_filter;
  else if (xd->left_available)
    filter_ref = xd->mi[-1]->mbmi.interp_filter;
  else
    filter_ref = EIGHTTAP;

  mbmi->sb_type = bsize;
  mbmi->mode = ZEROMV;
  mbmi->tx_size = MIN(max_txsize_lookup[bsize],
                      tx_mode_to_biggest_tx_size[tx_mode]);
  mbmi->skip = 1;
  mbmi->uv_mode = DC_PRED;
  mbmi->ref_frame[0] = LAST_FRAME;
  mbmi->ref_frame[1] = NONE;
  mbmi->mv[0].as_int = 0;
  mbmi->interp_filter = filter_ref;

  xd->mi[0]->bmi[0].as_mv[0].as_int = 0;
  x->skip = 1;

  *rate = 0;
  *dist = 0;
}

685
686
687
688
static void rd_pick_sb_modes(VP9_COMP *cpi, const TileInfo *const tile,
                             int mi_row, int mi_col,
                             int *totalrate, int64_t *totaldist,
                             BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
689
                             int64_t best_rd, int block) {
690
691
692
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
693
  MB_MODE_INFO *mbmi;
694
695
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
696
  const AQ_MODE aq_mode = cpi->oxcf.aq_mode;
697
  int i, orig_rdmult;
698
699
  double rdmult_ratio;

700
  vp9_clear_system_state();
701
  rdmult_ratio = 1.0;  // avoid uninitialized warnings
Ronald S. Bultje's avatar
Ronald S. Bultje committed
702

703
  // Use the lower precision, but faster, 32x32 fdct for mode selection.
704
  x->use_lp32x32fdct = 1;
705

706
707
708
  // TODO(JBB): Most other places in the code instead of calling the function
  // and then checking if its not the first 8x8 we put the check in the
  // calling function.  Do that here.
709
  if (bsize < BLOCK_8X8) {
710
711
    // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0
    // there is nothing to be done.
712
    if (block != 0) {
713
714
      *totalrate = 0;
      *totaldist = 0;
715
      return;
716
    }
717
  }
718

James Zern's avatar
James Zern committed
719
  set_offsets(cpi, tile, mi_row, mi_col, bsize);
720
  mbmi = &xd->mi[0]->mbmi;
721
  mbmi->sb_type = bsize;
722

723
  for (i = 0; i < MAX_MB_PLANE; ++i) {
724
    p[i].coeff = ctx->coeff_pbuf[i][0];
725
    p[i].qcoeff = ctx->qcoeff_pbuf[i][0];
726
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][0];
727
    p[i].eobs = ctx->eobs_pbuf[i][0];
728
  }
729
  ctx->is_coded = 0;
730
  x->skip_recode = 0;
731

732
  // Set to zero to make sure we do not use the previous encoded frame stats
733
  mbmi->skip = 0;
734

735
  x->source_variance = get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
736

737
738
739
  // Save rdmult before it might be changed, so it can be restored later.
  orig_rdmult = x->rdmult;

740
  if (aq_mode == VARIANCE_AQ) {
741
742
    const int energy = bsize <= BLOCK_16X16 ? x->mb_energy
                                            : vp9_block_energy(cpi, x, bsize);
Paul Wilkins's avatar
Paul Wilkins committed
743
744
745
    if (cm->frame_type == KEY_FRAME ||
        cpi->refresh_alt_ref_frame ||
        (cpi->refresh_golden_frame && !cpi->rc.is_src_frame_alt_ref)) {
746
      mbmi->segment_id = vp9_vaq_segment_id(energy);
Paul Wilkins's avatar
Paul Wilkins committed
747
748
749
    } else {
      const uint8_t *const map = cm->seg.update_map ? cpi->segmentation_map
                                                    : cm->last_frame_seg_map;
750
      mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
Paul Wilkins's avatar
Paul Wilkins committed
751
752
    }

753
    rdmult_ratio = vp9_vaq_rdmult_ratio(energy);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
754
    vp9_init_plane_quantizers(cpi, x);
755
    vp9_clear_system_state();
756
    x->rdmult = (int)round(x->rdmult * rdmult_ratio);
757
  } else if (aq_mode == COMPLEXITY_AQ) {
758
759
    const int mi_offset = mi_row * cm->mi_cols + mi_col;
    unsigned char complexity = cpi->complexity_map[mi_offset];
Paul Wilkins's avatar
Paul Wilkins committed
760
761
    const int is_edge = (mi_row <= 1) || (mi_row >= (cm->mi_rows - 2)) ||
                        (mi_col <= 1) || (mi_col >= (cm->mi_cols - 2));
762
763
    if (!is_edge && (complexity > 128))
      x->rdmult += ((x->rdmult * (complexity - 128)) / 256);
764
  } else if (aq_mode == CYCLIC_REFRESH_AQ) {
765
    const uint8_t *const map = cm->seg.update_map ? cpi->segmentation_map
766
                                                  : cm->last_frame_seg_map;
767
768
    // If segment 1, use rdmult for that segment.
    if (vp9_get_segment_id(cm, map, bsize, mi_row, mi_col))
769
      x->rdmult = vp9_cyclic_refresh_get_rdmult(cpi->cyclic_refresh);
770
  }
771

772
773
  // Find best coding mode & reconstruct the MB so it is available
  // as a predictor for MBs that follow in the SB
774
  if (frame_is_intra_only(cm)) {
775
776
    vp9_rd_pick_intra_mode_sb(cpi, x, totalrate, totaldist, bsize, ctx,
                              best_rd);
777
  } else {
778
779
    if (bsize >= BLOCK_8X8) {
      if (vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP))
780
781
        vp9_rd_pick_inter_mode_sb_seg_skip(cpi, x, totalrate, totaldist, bsize,
                                           ctx, best_rd);
782
783
784
785
      else
        vp9_rd_pick_inter_mode_sb(cpi, x, tile, mi_row, mi_col,
                                  totalrate, totaldist, bsize, ctx, best_rd);
    } else {
James Zern's avatar
James Zern committed
786
      vp9_rd_pick_inter_mode_sub8x8(cpi, x, tile, mi_row, mi_col, totalrate,
787
                                    totaldist, bsize, ctx, best_rd);
788
    }
789
  }
790

791
792
793
794
795
  x->rdmult = orig_rdmult;

  if (aq_mode == VARIANCE_AQ && *totalrate != INT_MAX) {
    vp9_clear_system_state();
    *totalrate = (int)round(*totalrate * rdmult_ratio);
Paul Wilkins's avatar
Paul Wilkins committed
796
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
797
}
Adrian Grange's avatar
Adrian Grange committed
798

799
static void update_stats(VP9_COMMON *cm, const MACROBLOCK *x) {
800
  const MACROBLOCKD *const xd = &x->e_mbd;
801
  const MODE_INFO *const mi = xd->mi[0];
802
  const MB_MODE_INFO *const mbmi = &mi->mbmi;
Adrian Grange's avatar
Adrian Grange committed
803

804
  if (!frame_is_intra_only(cm)) {
805
    const int seg_ref_active = vp9_segfeature_active(&cm->seg, mbmi->segment_id,
806
                                                     SEG_LVL_REF_FRAME);
807
808
809
810
811
812
813
814
815
816
817
    if (!seg_ref_active) {
      FRAME_COUNTS *const counts = &cm->counts;
      const int inter_block = is_inter_block(mbmi);

      counts->intra_inter[vp9_get_intra_inter_context(xd)][inter_block]++;

      // If the segment reference feature is enabled we have only a single
      // reference frame allowed for the segment so exclude it from
      // the reference frame counts used to work out probabilities.
      if (inter_block) {
        const MV_REFERENCE_FRAME ref0 = mbmi->ref_frame[0];
818

819
820
821
822
823
824
825
826
827
828
829
830
831
832
        if (cm->reference_mode == REFERENCE_MODE_SELECT)
          counts->comp_inter[vp9_get_reference_mode_context(cm, xd)]
                            [has_second_ref(mbmi)]++;

        if (has_second_ref(mbmi)) {
          counts->comp_ref[vp9_get_pred_context_comp_ref_p(cm, xd)]
                          [ref0 == GOLDEN_FRAME]++;
        } else {
          counts->single_ref[vp9_get_pred_context_single_ref_p1(xd)][0]
                            [ref0 != LAST_FRAME]++;
          if (ref0 != LAST_FRAME)
            counts->single_ref[vp9_get_pred_context_single_ref_p2(xd)][1]
                              [ref0 != GOLDEN_FRAME]++;
        }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
833
      }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
834
    }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
835
836
  }
}
John Koleszar's avatar
John Koleszar committed
837

838
839
840
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],
Jim Bankoski's avatar
Jim Bankoski committed
841
                            PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8],
842
                            BLOCK_SIZE bsize) {
Jim Bankoski's avatar
Jim Bankoski committed
843
844
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
845
  int p;
Jim Bankoski's avatar
Jim Bankoski committed
846
847
  const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
  const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
848
849
  int mi_width = num_8x8_blocks_wide_lookup[bsize];
  int mi_height = num_8x8_blocks_high_lookup[bsize];
850
  for (p = 0; p < MAX_MB_PLANE; p++) {
Jim Bankoski's avatar
Jim Bankoski committed
851
    vpx_memcpy(
852
        xd->above_context[p] + ((mi_col * 2) >> xd->plane[p].subsampling_x),
Jim Bankoski's avatar
Jim Bankoski committed
853
854
855
        a + num_4x4_blocks_wide * p,
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide) >>
        xd->plane[p].subsampling_x);
Jim Bankoski's avatar
Jim Bankoski committed
856
    vpx_memcpy(
857
        xd->left_context[p]
Jim Bankoski's avatar
Jim Bankoski committed
858
859
860
861
862
            + ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
        l + num_4x4_blocks_high * p,
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high) >>
        xd->plane[p].subsampling_y);
  }
863
864
865
866
  vpx_memcpy(xd->above_seg_context + mi_col, sa,
             sizeof(*xd->above_seg_context) * mi_width);
  vpx_memcpy(xd->left_seg_context + (mi_row & MI_MASK), sl,
             sizeof(xd->left_seg_context[0]) * mi_height);
867
}
Jingning Han's avatar
Jingning Han committed
868

Jim Bankoski's avatar
Jim Bankoski committed
869
static void save_context(VP9_COMP *cpi, int mi_row, int mi_col,
Jim Bankoski's avatar
Jim Bankoski committed
870
871
872
                         ENTROPY_CONTEXT a[16 * MAX_MB_PLANE],
                         ENTROPY_CONTEXT l[16 * MAX_MB_PLANE],
                         PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8],
873
                         BLOCK_SIZE bsize) {
Jim Bankoski's avatar
Jim Bankoski committed
874
875
  const MACROBLOCK *const x = &cpi->mb;
  const MACROBLOCKD *const xd = &x->e_mbd;
Jim Bankoski's avatar
Jim Bankoski committed
876
  int p;
Jim Bankoski's avatar
Jim Bankoski committed
877
878
  const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
  const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
879
880
  int mi_width = num_8x8_blocks_wide_lookup[bsize];
  int mi_height = num_8x8_blocks_high_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
881
882
883

  // buffer the above/left context information of the block in search.
  for (p = 0; p < MAX_MB_PLANE; ++p) {
Jim Bankoski's avatar
Jim Bankoski committed
884
    vpx_memcpy(
Jim Bankoski's avatar
Jim Bankoski committed
885
        a + num_4x4_blocks_wide * p,
886
        xd->above_context[p] + (mi_col * 2 >> xd->plane[p].subsampling_x),
Jim Bankoski's avatar
Jim Bankoski committed
887
888
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide) >>
        xd->plane[p].subsampling_x);
Jim Bankoski's avatar
Jim Bankoski committed
889
    vpx_memcpy(
Jim Bankoski's avatar
Jim Bankoski committed
890
        l + num_4x4_blocks_high * p,
891
        xd->left_context[p]
Jim Bankoski's avatar
Jim Bankoski committed
892
893
894
895
            + ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high) >>
        xd->plane[p].subsampling_y);
  }
896
897
898
899
  vpx_memcpy(sa, xd->above_seg_context + mi_col,
             sizeof(*xd->above_seg_context) * mi_width);
  vpx_memcpy(sl, xd->left_seg_context + (mi_row & MI_MASK),
             sizeof(xd->left_seg_context[0]) * mi_height);
Jim Bankoski's avatar
Jim Bankoski committed
900
}
901

James Zern's avatar
James Zern committed
902
903
static void encode_b(VP9_COMP *cpi, const TileInfo *const tile,
                     TOKENEXTRA **tp, int mi_row, int mi_col,
904
905
                     int output_enabled, BLOCK_SIZE bsize,
                     PICK_MODE_CONTEXT *ctx) {
James Zern's avatar
James Zern committed
906
  set_offsets(cpi, tile, mi_row, mi_col, bsize);
907
908
  update_state(cpi, ctx, mi_row, mi_col, bsize, output_enabled);
  encode_superblock(cpi, tp, output_enabled, mi_row, mi_col, bsize, ctx);
John Koleszar's avatar
John Koleszar committed
909

910
  if (output_enabled) {
911
    update_stats(&cpi->common, &cpi->mb);
912

913
914
    (*tp)->token = EOSB_TOKEN;
    (*tp)++;
John Koleszar's avatar
John Koleszar committed
915
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
916
917
}

James Zern's avatar
James Zern committed
918
919
static void encode_sb(VP9_COMP *cpi, const TileInfo *const tile,
                      TOKENEXTRA **tp, int mi_row, int mi_col,
920
921
                      int output_enabled, BLOCK_SIZE bsize,
                      PC_TREE *pc_tree) {
922
923
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
924
925
  MACROBLOCKD *const xd = &x->e_mbd;

926
927
  const int bsl = b_width_log2(bsize), hbs = (1 << bsl) / 4;
  int ctx;
Jim Bankoski's avatar
Jim Bankoski committed
928
  PARTITION_TYPE partition;
929
  BLOCK_SIZE subsize = bsize;
930

931
932
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
    return;
933

934
  if (bsize >= BLOCK_8X8) {
935
    ctx = partition_plane_context(xd, mi_row, mi_col, bsize);
936
    subsize = get_subsize(bsize, pc_tree->partitioning);
937
938
939
  } else {
    ctx = 0;
    subsize = BLOCK_4X4;
940
  }
941
942

  partition = partition_lookup[bsl][subsize];
943
944
  if (output_enabled && bsize != BLOCK_4X4)
    cm->counts.partition[ctx][partition]++;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
945

Jim Bankoski's avatar
Jim Bankoski committed
946
947
  switch (partition) {
    case PARTITION_NONE:
948
949
      encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize,
               &pc_tree->none);
Jim Bankoski's avatar
Jim Bankoski committed
950
951
      break;
    case PARTITION_VERT:
952
953
954
955
956
      encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize,
               &pc_tree->vertical[0]);
      if (mi_col + hbs < cm->mi_cols && bsize > BLOCK_8X8) {
        encode_b(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize,
                 &pc_tree->vertical[1]);
957
      }
Jim Bankoski's avatar
Jim Bankoski committed
958
959
      break;
    case PARTITION_HORZ:
960
961
962
963
964
      encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize,
               &pc_tree->horizontal[0]);
      if (mi_row + hbs < cm->mi_rows && bsize > BLOCK_8X8) {
        encode_b(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize,
                 &pc_tree->horizontal[1]);
965
      }
Jim Bankoski's avatar
Jim Bankoski committed
966
967
      break;
    case PARTITION_SPLIT:
968
969
970
971
972
973
974
975
976
977
978
979
980
      if (bsize == BLOCK_8X8) {
        encode_b(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize,
                 pc_tree->leaf_split[0]);
      } else {
        encode_sb(cpi, tile, tp, mi_row, mi_col, output_enabled, subsize,
                  pc_tree->split[0]);
        encode_sb(cpi, tile, tp, mi_row, mi_col + hbs, output_enabled, subsize,
                  pc_tree->split[1]);
        encode_sb(cpi, tile, tp, mi_row + hbs, mi_col, output_enabled, subsize,
                  pc_tree->split[2]);
        encode_sb(cpi, tile, tp, mi_row + hbs, mi_col + hbs, output_enabled,
                  subsize, pc_tree->split[3]);
      }
Jim Bankoski's avatar
Jim Bankoski committed
981
982
      break;
    default:
983
      assert("Invalid partition type.");
984
      break;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
985
  }
986

987
  if (partition != PARTITION_SPLIT || bsize == BLOCK_8X8)
988
    update_partition_context(xd, mi_row, mi_col, subsize, bsize);
Adrian Grange's avatar
Adrian Grange committed
989
}
John Koleszar's avatar
John Koleszar committed
990

Paul Wilkins's avatar
Paul Wilkins committed
991
992
993
994
995
996
// Check to see if the given partition size is allowed for a specified number
// of 8x8 block rows and columns remaining in the image.
// If not then return the largest allowed partition size
static BLOCK_SIZE find_partition_size(BLOCK_SIZE bsize,
                                      int rows_left, int cols_left,
                                      int *bh, int *bw) {
997
  if (rows_left <= 0 || cols_left <= 0) {
Paul Wilkins's avatar
Paul Wilkins committed
998
999
    return MIN(bsize, BLOCK_8X8);
  } else {