bitstream.c 65.2 KB
Newer Older
Jingning Han's avatar
Jingning Han committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
/*
 *  Copyright (c) 2010 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>
#include <stdio.h>
#include <limits.h>

#include "vpx/vpx_encoder.h"
#include "vpx_dsp/bitwriter_buffer.h"
17
#include "vpx_dsp/vpx_dsp_common.h"
Jingning Han's avatar
Jingning Han committed
18
19
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem_ops.h"
20
#include "vpx_ports/system_state.h"
Jingning Han's avatar
Jingning Han committed
21

22
23
24
25
26
27
28
#include "vp10/common/entropy.h"
#include "vp10/common/entropymode.h"
#include "vp10/common/entropymv.h"
#include "vp10/common/mvref_common.h"
#include "vp10/common/pred_common.h"
#include "vp10/common/seg_common.h"
#include "vp10/common/tile_common.h"
Jingning Han's avatar
Jingning Han committed
29

30
31
32
33
34
35
36
#include "vp10/encoder/cost.h"
#include "vp10/encoder/bitstream.h"
#include "vp10/encoder/encodemv.h"
#include "vp10/encoder/mcomp.h"
#include "vp10/encoder/segmentation.h"
#include "vp10/encoder/subexp.h"
#include "vp10/encoder/tokenize.h"
Jingning Han's avatar
Jingning Han committed
37
38
39
40

static const struct vp10_token intra_mode_encodings[INTRA_MODES] = {
  {0, 1}, {6, 3}, {28, 5}, {30, 5}, {58, 6}, {59, 6}, {126, 7}, {127, 7},
  {62, 6}, {2, 2}};
41
42
43
44
#if CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] =
  {{0, 1}, {4, 3}, {3, 2}, {5, 3}};
#else
Jingning Han's avatar
Jingning Han committed
45
46
static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] =
  {{0, 1}, {2, 2}, {3, 2}};
47
#endif  // CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
Jingning Han's avatar
Jingning Han committed
48
49
50
51
static const struct vp10_token partition_encodings[PARTITION_TYPES] =
  {{0, 1}, {2, 2}, {6, 3}, {7, 3}};
static const struct vp10_token inter_mode_encodings[INTER_MODES] =
  {{2, 2}, {6, 3}, {0, 1}, {7, 3}};
hui su's avatar
hui su committed
52
53
54
55
56
57
58
59
60
61
62
63
64
65
static const struct vp10_token palette_size_encodings[] = {
    {0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {63, 6},
};
static const struct vp10_token
palette_color_encodings[PALETTE_MAX_SIZE - 1][PALETTE_MAX_SIZE] = {
    {{0, 1}, {1, 1}},  // 2 colors
    {{0, 1}, {2, 2}, {3, 2}},  // 3 colors
    {{0, 1}, {2, 2}, {6, 3}, {7, 3}},  // 4 colors
    {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {15, 4}},  // 5 colors
    {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {31, 5}},  // 6 colors
    {{0, 1}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {63, 6}},  // 7 colors
    {{0, 1}, {2, 2}, {6, 3}, {14, 4},
        {30, 5}, {62, 6}, {126, 7}, {127, 7}},  // 8 colors
};
hui su's avatar
hui su committed
66
67
68
69
70
71
72
73
74
75
76
77
78

static INLINE void write_uniform(vpx_writer *w, int n, int v) {
  int l = get_unsigned_bits(n);
  int m = (1 << l) - n;
  if (l == 0)
    return;
  if (v < m) {
    vpx_write_literal(w, v, l - 1);
  } else {
    vpx_write_literal(w, m + ((v - m) >> 1), l - 1);
    vpx_write_literal(w, (v - m) & 1, 1);
  }
}
Jingning Han's avatar
Jingning Han committed
79

80
#if CONFIG_EXT_TX
81
82
static struct vp10_token ext_tx_inter_encodings[EXT_TX_SETS_INTER][TX_TYPES];
static struct vp10_token ext_tx_intra_encodings[EXT_TX_SETS_INTRA][TX_TYPES];
83
84
85
86
#endif  // CONFIG_EXT_TX

void vp10_encode_token_init() {
#if CONFIG_EXT_TX
87
88
89
90
91
92
93
  int s;
  for (s = 1; s < EXT_TX_SETS_INTER; ++s) {
    vp10_tokens_from_tree(ext_tx_inter_encodings[s], vp10_ext_tx_inter_tree[s]);
  }
  for (s = 1; s < EXT_TX_SETS_INTRA; ++s) {
    vp10_tokens_from_tree(ext_tx_intra_encodings[s], vp10_ext_tx_intra_tree[s]);
  }
94
95
96
#endif  // CONFIG_EXT_TX
}

Jingning Han's avatar
Jingning Han committed
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
static void write_intra_mode(vpx_writer *w, PREDICTION_MODE mode,
                             const vpx_prob *probs) {
  vp10_write_token(w, vp10_intra_mode_tree, probs, &intra_mode_encodings[mode]);
}

static void write_inter_mode(vpx_writer *w, PREDICTION_MODE mode,
                             const vpx_prob *probs) {
  assert(is_inter_mode(mode));
  vp10_write_token(w, vp10_inter_mode_tree, probs,
                  &inter_mode_encodings[INTER_OFFSET(mode)]);
}

static void encode_unsigned_max(struct vpx_write_bit_buffer *wb,
                                int data, int max) {
  vpx_wb_write_literal(wb, data, get_unsigned_bits(max));
}

static void prob_diff_update(const vpx_tree_index *tree,
                             vpx_prob probs[/*n - 1*/],
                             const unsigned int counts[/*n - 1*/],
                             int n, vpx_writer *w) {
  int i;
  unsigned int branch_ct[32][2];

  // Assuming max number of probabilities <= 32
  assert(n <= 32);

  vp10_tree_probs_from_distribution(tree, branch_ct, counts);
  for (i = 0; i < n - 1; ++i)
    vp10_cond_prob_diff_update(w, &probs[i], branch_ct[i]);
}

129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
static int prob_diff_update_savings(const vpx_tree_index *tree,
                                    vpx_prob probs[/*n - 1*/],
                                    const unsigned int counts[/*n - 1*/],
                                    int n) {
  int i;
  unsigned int branch_ct[32][2];
  int savings = 0;

  // Assuming max number of probabilities <= 32
  assert(n <= 32);
  vp10_tree_probs_from_distribution(tree, branch_ct, counts);
  for (i = 0; i < n - 1; ++i) {
    savings += vp10_cond_prob_diff_update_savings(&probs[i],
                                                  branch_ct[i]);
  }
  return savings;
}

147
148
#if CONFIG_VAR_TX
static void write_tx_size_inter(const VP10_COMMON *cm,
149
                                const MACROBLOCKD *xd,
150
                                const MB_MODE_INFO *mbmi,
151
                                TX_SIZE tx_size, int blk_row, int blk_col,
152
                                vpx_writer *w) {
153
154
155
  const int tx_idx = (blk_row >> 1) * 8 + (blk_col >> 1);
  int max_blocks_high = num_4x4_blocks_high_lookup[mbmi->sb_type];
  int max_blocks_wide = num_4x4_blocks_wide_lookup[mbmi->sb_type];
156
157
158
159
  int ctx = txfm_partition_context(xd->above_txfm_context + (blk_col >> 1),
                                   xd->left_txfm_context + (blk_row >> 1),
                                   tx_size);

160
161
162
163
164
165
166
167
168
  if (xd->mb_to_bottom_edge < 0)
    max_blocks_high += xd->mb_to_bottom_edge >> 5;
  if (xd->mb_to_right_edge < 0)
     max_blocks_wide += xd->mb_to_right_edge >> 5;

  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide)
     return;

  if (tx_size == mbmi->inter_tx_size[tx_idx]) {
169
170
171
    vpx_write(w, 0, cm->fc->txfm_partition_prob[ctx]);
    txfm_partition_update(xd->above_txfm_context + (blk_col >> 1),
                          xd->left_txfm_context + (blk_row >> 1), tx_size);
172
173
  } else {
    const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
174
    int bsl = b_width_log2_lookup[bsize];
175
    int i;
176
    vpx_write(w, 1, cm->fc->txfm_partition_prob[ctx]);
177

178
179
180
    if (tx_size == TX_8X8) {
      txfm_partition_update(xd->above_txfm_context + (blk_col >> 1),
                            xd->left_txfm_context + (blk_row >> 1), TX_4X4);
181
      return;
182
    }
183
184
185
186

    assert(bsl > 0);
    --bsl;
    for (i = 0; i < 4; ++i) {
187
188
189
      int offsetr = blk_row + ((i >> 1) << bsl);
      int offsetc = blk_col + ((i & 0x01) << bsl);
      write_tx_size_inter(cm, xd, mbmi, tx_size - 1, offsetr, offsetc, w);
190
191
192
    }
  }
}
193
194
195
196
197
198
199
200

static void update_txfm_partition_probs(VP10_COMMON *cm, vpx_writer *w,
                                        FRAME_COUNTS *counts) {
  int k;
  for (k = 0; k < TXFM_PARTITION_CONTEXTS; ++k)
    vp10_cond_prob_diff_update(w, &cm->fc->txfm_partition_prob[k],
                               counts->txfm_partition[k]);
}
201
202
#endif

Yaowu Xu's avatar
Yaowu Xu committed
203
static void write_selected_tx_size(const VP10_COMMON *cm,
Jingning Han's avatar
Jingning Han committed
204
205
206
207
208
209
210
211
212
213
214
215
216
217
                                   const MACROBLOCKD *xd, vpx_writer *w) {
  TX_SIZE tx_size = xd->mi[0]->mbmi.tx_size;
  BLOCK_SIZE bsize = xd->mi[0]->mbmi.sb_type;
  const TX_SIZE max_tx_size = max_txsize_lookup[bsize];
  const vpx_prob *const tx_probs = get_tx_probs2(max_tx_size, xd,
                                                 &cm->fc->tx_probs);
  vpx_write(w, tx_size != TX_4X4, tx_probs[0]);
  if (tx_size != TX_4X4 && max_tx_size >= TX_16X16) {
    vpx_write(w, tx_size != TX_8X8, tx_probs[1]);
    if (tx_size != TX_8X8 && max_tx_size >= TX_32X32)
      vpx_write(w, tx_size != TX_16X16, tx_probs[2]);
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
218
static int write_skip(const VP10_COMMON *cm, const MACROBLOCKD *xd,
Jingning Han's avatar
Jingning Han committed
219
220
221
222
223
224
225
226
227
228
                      int segment_id, const MODE_INFO *mi, vpx_writer *w) {
  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
    return 1;
  } else {
    const int skip = mi->mbmi.skip;
    vpx_write(w, skip, vp10_get_skip_prob(cm, xd));
    return skip;
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
229
static void update_skip_probs(VP10_COMMON *cm, vpx_writer *w,
Jingning Han's avatar
Jingning Han committed
230
231
232
233
234
235
236
                              FRAME_COUNTS *counts) {
  int k;

  for (k = 0; k < SKIP_CONTEXTS; ++k)
    vp10_cond_prob_diff_update(w, &cm->fc->skip_probs[k], counts->skip[k]);
}

Yaowu Xu's avatar
Yaowu Xu committed
237
static void update_switchable_interp_probs(VP10_COMMON *cm, vpx_writer *w,
Jingning Han's avatar
Jingning Han committed
238
239
240
241
242
243
244
245
                                           FRAME_COUNTS *counts) {
  int j;
  for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j)
    prob_diff_update(vp10_switchable_interp_tree,
                     cm->fc->switchable_interp_prob[j],
                     counts->switchable_interp[j], SWITCHABLE_FILTERS, w);
}

246
247
248
249
#if CONFIG_EXT_TX
static void update_ext_tx_probs(VP10_COMMON *cm, vpx_writer *w) {
  const int savings_thresh = vp10_cost_one(GROUP_DIFF_UPDATE_PROB) -
                             vp10_cost_zero(GROUP_DIFF_UPDATE_PROB);
250
  int i, j;
251
252
253
254
255
  int s;
  for (s = 1; s < EXT_TX_SETS_INTER; ++s) {
    int savings = 0;
    int do_update = 0;
    for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
256
      if (!use_inter_ext_tx_for_txsize[s][i]) continue;
257
258
259
260
261
262
263
264
      savings += prob_diff_update_savings(
          vp10_ext_tx_inter_tree[s], cm->fc->inter_ext_tx_prob[s][i],
          cm->counts.inter_ext_tx[s][i], num_ext_tx_set_inter[s]);
    }
    do_update = savings > savings_thresh;
    vpx_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
    if (do_update) {
      for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
265
        if (!use_inter_ext_tx_for_txsize[s][i]) continue;
266
267
268
269
270
        prob_diff_update(vp10_ext_tx_inter_tree[s],
                         cm->fc->inter_ext_tx_prob[s][i],
                         cm->counts.inter_ext_tx[s][i],
                         num_ext_tx_set_inter[s], w);
      }
271
272
    }
  }
273

274
275
276
277
  for (s = 1; s < EXT_TX_SETS_INTRA; ++s) {
    int savings = 0;
    int do_update = 0;
    for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
278
      if (!use_intra_ext_tx_for_txsize[s][i]) continue;
279
      for (j = 0; j < INTRA_MODES; ++j)
280
281
282
283
284
285
286
287
        savings += prob_diff_update_savings(
            vp10_ext_tx_intra_tree[s], cm->fc->intra_ext_tx_prob[s][i][j],
            cm->counts.intra_ext_tx[s][i][j], num_ext_tx_set_intra[s]);
    }
    do_update = savings > savings_thresh;
    vpx_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
    if (do_update) {
      for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
288
        if (!use_intra_ext_tx_for_txsize[s][i]) continue;
289
290
291
292
293
294
295
        for (j = 0; j < INTRA_MODES; ++j)
          prob_diff_update(vp10_ext_tx_intra_tree[s],
                           cm->fc->intra_ext_tx_prob[s][i][j],
                           cm->counts.intra_ext_tx[s][i][j],
                           num_ext_tx_set_intra[s], w);
      }
    }
296
  }
297
298
299
}
#endif  // CONFIG_EXT_TX

hui su's avatar
hui su committed
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
static void pack_palette_tokens(vpx_writer *w, TOKENEXTRA **tp,
                                BLOCK_SIZE bsize, int n) {
  int rows = 4 * num_4x4_blocks_high_lookup[bsize];
  int cols = 4 * num_4x4_blocks_wide_lookup[bsize];
  int i;
  TOKENEXTRA *p = *tp;

  for (i = 0; i < rows * cols -1; ++i) {
    vp10_write_token(w, vp10_palette_color_tree[n - 2], p->context_tree,
                     &palette_color_encodings[n - 2][p->token]);
    ++p;
  }

  *tp = p;
}

Jingning Han's avatar
Jingning Han committed
316
317
static void pack_mb_tokens(vpx_writer *w,
                           TOKENEXTRA **tp, const TOKENEXTRA *const stop,
318
                           vpx_bit_depth_t bit_depth, const TX_SIZE tx) {
Jingning Han's avatar
Jingning Han committed
319
  TOKENEXTRA *p = *tp;
320
321
#if CONFIG_VAR_TX
  int count = 0;
322
  const int seg_eob = 16 << (tx << 1);
323
#endif
Jingning Han's avatar
Jingning Han committed
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343

  while (p < stop && p->token != EOSB_TOKEN) {
    const int t = p->token;
    const struct vp10_token *const a = &vp10_coef_encodings[t];
    int v = a->value;
    int n = a->len;
#if CONFIG_VP9_HIGHBITDEPTH
    const vp10_extra_bit *b;
    if (bit_depth == VPX_BITS_12)
      b = &vp10_extra_bits_high12[t];
    else if (bit_depth == VPX_BITS_10)
      b = &vp10_extra_bits_high10[t];
    else
      b = &vp10_extra_bits[t];
#else
    const vp10_extra_bit *const b = &vp10_extra_bits[t];
    (void) bit_depth;
#endif  // CONFIG_VP9_HIGHBITDEPTH

    /* skip one or two nodes */
344
    if (p->skip_eob_node)
Jingning Han's avatar
Jingning Han committed
345
      n -= p->skip_eob_node;
346
347
348
349
350
    else
      vpx_write(w, t != EOB_TOKEN, p->context_tree[0]);

    if (t != EOB_TOKEN) {
      vpx_write(w, t != ZERO_TOKEN, p->context_tree[1]);
Jingning Han's avatar
Jingning Han committed
351

352
353
354
355
356
357
358
359
360
361
      if (t != ZERO_TOKEN) {
        vpx_write(w, t != ONE_TOKEN, p->context_tree[2]);

        if (t != ONE_TOKEN) {
          int len = UNCONSTRAINED_NODES - p->skip_eob_node;
          vp10_write_tree(w, vp10_coef_con_tree,
                          vp10_pareto8_full[p->context_tree[PIVOT_NODE] - 1],
                          v, n - len, 0);
        }
      }
Jingning Han's avatar
Jingning Han committed
362
363
364
365
    }

    if (b->base_val) {
      const int e = p->extra, l = b->len;
366
367
      int skip_bits =
          (b->base_val == CAT6_MIN_VAL) ? TX_SIZES - 1 - tx : 0;
Jingning Han's avatar
Jingning Han committed
368
369
370
371
372
373
374
375
376

      if (l) {
        const unsigned char *pb = b->prob;
        int v = e >> 1;
        int n = l;              /* number of bits in v, assumed nonzero */
        int i = 0;

        do {
          const int bb = (v >> --n) & 1;
377
378
379
380
381
382
          if (skip_bits) {
            skip_bits--;
            assert(!bb);
          } else {
            vpx_write(w, bb, pb[i >> 1]);
          }
Jingning Han's avatar
Jingning Han committed
383
384
385
386
387
388
389
          i = b->tree[i + bb];
        } while (n);
      }

      vpx_write_bit(w, e & 1);
    }
    ++p;
390
391
392
393
394
395

#if CONFIG_VAR_TX
    ++count;
    if (t == EOB_TOKEN || count == seg_eob)
      break;
#endif
Jingning Han's avatar
Jingning Han committed
396
397
  }

398
  *tp = p;
Jingning Han's avatar
Jingning Han committed
399
400
}

401
402
403
404
405
406
407
408
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
442
443
444
445
446
447
448
449
450
451
#if CONFIG_VAR_TX
static void pack_txb_tokens(vpx_writer *w,
                           TOKENEXTRA **tp, const TOKENEXTRA *const tok_end,
                           MACROBLOCKD *xd, MB_MODE_INFO *mbmi, int plane,
                           BLOCK_SIZE plane_bsize,
                           vpx_bit_depth_t bit_depth,
                           int block,
                           int blk_row, int blk_col, TX_SIZE tx_size) {
  const struct macroblockd_plane *const pd = &xd->plane[plane];
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
  int tx_idx = (blk_row >> (1 - pd->subsampling_y)) * 8 +
               (blk_col >> (1 - pd->subsampling_x));
  TX_SIZE plane_tx_size = plane ?
      get_uv_tx_size_impl(mbmi->inter_tx_size[tx_idx], bsize, 0, 0) :
      mbmi->inter_tx_size[tx_idx];
  int max_blocks_high = num_4x4_blocks_high_lookup[plane_bsize];
  int max_blocks_wide = num_4x4_blocks_wide_lookup[plane_bsize];

  if (xd->mb_to_bottom_edge < 0)
    max_blocks_high += xd->mb_to_bottom_edge >> (5 + pd->subsampling_y);
  if (xd->mb_to_right_edge < 0)
    max_blocks_wide += xd->mb_to_right_edge >> (5 + pd->subsampling_x);

  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide)
    return;

  if (tx_size == plane_tx_size) {
    pack_mb_tokens(w, tp, tok_end, bit_depth, tx_size);
  } else {
    int bsl = b_width_log2_lookup[bsize];
    int i;

    assert(bsl > 0);
    --bsl;

    for (i = 0; i < 4; ++i) {
      const int offsetr = blk_row + ((i >> 1) << bsl);
      const int offsetc = blk_col + ((i & 0x01) << bsl);
      int step = 1 << (2 * (tx_size - 1));

      if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide)
        continue;

      pack_txb_tokens(w, tp, tok_end, xd, mbmi, plane,
                      plane_bsize, bit_depth, block + i * step,
                      offsetr, offsetc, tx_size - 1);
    }
  }
}
#endif

Jingning Han's avatar
Jingning Han committed
452
static void write_segment_id(vpx_writer *w, const struct segmentation *seg,
453
                             const struct segmentation_probs *segp,
Jingning Han's avatar
Jingning Han committed
454
455
                             int segment_id) {
  if (seg->enabled && seg->update_map)
456
    vp10_write_tree(w, vp10_segment_tree, segp->tree_probs, segment_id, 3, 0);
Jingning Han's avatar
Jingning Han committed
457
458
459
}

// This function encodes the reference frame
Yaowu Xu's avatar
Yaowu Xu committed
460
static void write_ref_frames(const VP10_COMMON *cm, const MACROBLOCKD *xd,
Jingning Han's avatar
Jingning Han committed
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
                             vpx_writer *w) {
  const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  const int is_compound = has_second_ref(mbmi);
  const int segment_id = mbmi->segment_id;

  // If segment level coding of this signal is disabled...
  // or the segment allows multiple reference frame options
  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
    assert(!is_compound);
    assert(mbmi->ref_frame[0] ==
               get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME));
  } else {
    // does the feature use compound prediction or not
    // (if not specified at the frame/segment level)
    if (cm->reference_mode == REFERENCE_MODE_SELECT) {
      vpx_write(w, is_compound, vp10_get_reference_mode_prob(cm, xd));
    } else {
      assert(!is_compound == (cm->reference_mode == SINGLE_REFERENCE));
    }

    if (is_compound) {
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
#if CONFIG_EXT_REFS
      const int bit = (mbmi->ref_frame[0] == GOLDEN_FRAME ||
                       mbmi->ref_frame[0] == LAST3_FRAME ||
                       mbmi->ref_frame[0] == LAST4_FRAME);
#else
      const int bit = mbmi->ref_frame[0] == GOLDEN_FRAME;
#endif  // CONFIG_EXT_REFS
      vpx_write(w, bit, vp10_get_pred_prob_comp_ref_p(cm, xd));

#if CONFIG_EXT_REFS
      if (!bit) {
        const int bit1 = mbmi->ref_frame[0] == LAST_FRAME;
        vpx_write(w, bit1, vp10_get_pred_prob_comp_ref_p1(cm, xd));
      } else {
        const int bit2 = mbmi->ref_frame[0] == GOLDEN_FRAME;
        vpx_write(w, bit2, vp10_get_pred_prob_comp_ref_p2(cm, xd));
        if (!bit2) {
          const int bit3 = mbmi->ref_frame[0] == LAST3_FRAME;
          vpx_write(w, bit3, vp10_get_pred_prob_comp_ref_p3(cm, xd));
        }
      }
#endif  // CONFIG_EXT_REFS
Jingning Han's avatar
Jingning Han committed
504
    } else {
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
#if CONFIG_EXT_REFS
      const int bit0 = (mbmi->ref_frame[0] == GOLDEN_FRAME ||
                        mbmi->ref_frame[0] == ALTREF_FRAME);
      vpx_write(w, bit0, vp10_get_pred_prob_single_ref_p1(cm, xd));

      if (bit0) {
        const int bit1 = mbmi->ref_frame[0] != GOLDEN_FRAME;
        vpx_write(w, bit1, vp10_get_pred_prob_single_ref_p2(cm, xd));
      } else {
        const int bit2 = (mbmi->ref_frame[0] == LAST3_FRAME ||
                          mbmi->ref_frame[0] == LAST4_FRAME);
        vpx_write(w, bit2, vp10_get_pred_prob_single_ref_p3(cm, xd));

        if (!bit2) {
          const int bit3 = mbmi->ref_frame[0] != LAST_FRAME;
          vpx_write(w, bit3, vp10_get_pred_prob_single_ref_p4(cm, xd));
        } else {
          const int bit4 = mbmi->ref_frame[0] != LAST3_FRAME;
          vpx_write(w, bit4, vp10_get_pred_prob_single_ref_p5(cm, xd));
        }
      }
#else
Jingning Han's avatar
Jingning Han committed
527
528
529
530
531
532
      const int bit0 = mbmi->ref_frame[0] != LAST_FRAME;
      vpx_write(w, bit0, vp10_get_pred_prob_single_ref_p1(cm, xd));
      if (bit0) {
        const int bit1 = mbmi->ref_frame[0] != GOLDEN_FRAME;
        vpx_write(w, bit1, vp10_get_pred_prob_single_ref_p2(cm, xd));
      }
533
#endif  // CONFIG_EXT_REFS
Jingning Han's avatar
Jingning Han committed
534
535
536
537
    }
  }
}

hui su's avatar
hui su committed
538
539
540
541
#if CONFIG_EXT_INTRA
static void write_ext_intra_mode_info(const VP10_COMMON *const cm,
                                      const MB_MODE_INFO *const mbmi,
                                      vpx_writer *w) {
hui su's avatar
hui su committed
542
543
544
#if !ALLOW_FILTER_INTRA_MODES
  return;
#endif
hui su's avatar
hui su committed
545
546
547
548
549
  if (mbmi->mode == DC_PRED) {
    vpx_write(w, mbmi->ext_intra_mode_info.use_ext_intra_mode[0],
              cm->fc->ext_intra_probs[0]);
    if (mbmi->ext_intra_mode_info.use_ext_intra_mode[0]) {
      EXT_INTRA_MODE mode = mbmi->ext_intra_mode_info.ext_intra_mode[0];
hui su's avatar
hui su committed
550
      write_uniform(w, FILTER_INTRA_MODES, mode);
hui su's avatar
hui su committed
551
552
553
554
555
556
557
    }
  }
  if (mbmi->uv_mode == DC_PRED) {
    vpx_write(w, mbmi->ext_intra_mode_info.use_ext_intra_mode[1],
              cm->fc->ext_intra_probs[1]);
    if (mbmi->ext_intra_mode_info.use_ext_intra_mode[1]) {
      EXT_INTRA_MODE mode = mbmi->ext_intra_mode_info.ext_intra_mode[1];
hui su's avatar
hui su committed
558
      write_uniform(w, FILTER_INTRA_MODES, mode);
hui su's avatar
hui su committed
559
560
561
562
563
    }
  }
}
#endif  // CONFIG_EXT_INTRA

564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
static void write_switchable_interp_filter(VP10_COMP *cpi,
                                           const MACROBLOCKD *xd,
                                           vpx_writer *w) {
  VP10_COMMON *const cm = &cpi->common;
  const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  if (cm->interp_filter == SWITCHABLE) {
    const int ctx = vp10_get_pred_context_switchable_interp(xd);
#if CONFIG_EXT_INTERP
    if (!vp10_is_interp_needed(xd)) {
      // if (mbmi->interp_filter != EIGHTTAP)
      //   printf("Error [%d]\n", mbmi->sb_type);
      assert(mbmi->interp_filter == EIGHTTAP);
      return;
    }
#endif
    vp10_write_token(w, vp10_switchable_interp_tree,
                     cm->fc->switchable_interp_prob[ctx],
                     &switchable_interp_encodings[mbmi->interp_filter]);
    ++cpi->interp_filter_selected[0][mbmi->interp_filter];
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
586
static void pack_inter_mode_mvs(VP10_COMP *cpi, const MODE_INFO *mi,
Jingning Han's avatar
Jingning Han committed
587
                                vpx_writer *w) {
Yaowu Xu's avatar
Yaowu Xu committed
588
  VP10_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
589
  const nmv_context *nmvc = &cm->fc->nmvc;
590
591
  const MACROBLOCK *x = &cpi->td.mb;
  const MACROBLOCKD *xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
592
  const struct segmentation *const seg = &cm->seg;
593
  const struct segmentation_probs *const segp = &cm->fc->seg;
Jingning Han's avatar
Jingning Han committed
594
595
596
597
598
599
600
601
602
603
604
605
606
  const MB_MODE_INFO *const mbmi = &mi->mbmi;
  const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;
  const PREDICTION_MODE mode = mbmi->mode;
  const int segment_id = mbmi->segment_id;
  const BLOCK_SIZE bsize = mbmi->sb_type;
  const int allow_hp = cm->allow_high_precision_mv;
  const int is_inter = is_inter_block(mbmi);
  const int is_compound = has_second_ref(mbmi);
  int skip, ref;

  if (seg->update_map) {
    if (seg->temporal_update) {
      const int pred_flag = mbmi->seg_id_predicted;
607
      vpx_prob pred_prob = vp10_get_pred_prob_seg_id(segp, xd);
Jingning Han's avatar
Jingning Han committed
608
609
      vpx_write(w, pred_flag, pred_prob);
      if (!pred_flag)
610
        write_segment_id(w, seg, segp, segment_id);
Jingning Han's avatar
Jingning Han committed
611
    } else {
612
      write_segment_id(w, seg, segp, segment_id);
Jingning Han's avatar
Jingning Han committed
613
614
615
616
617
618
619
620
621
622
    }
  }

  skip = write_skip(cm, xd, segment_id, mi, w);

  if (!segfeature_active(seg, segment_id, SEG_LVL_REF_FRAME))
    vpx_write(w, is_inter, vp10_get_intra_inter_prob(cm, xd));

  if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT &&
      !(is_inter && skip)) {
623
624
625
626
#if CONFIG_VAR_TX
    if (is_inter) {  // This implies skip flag is 0.
      const TX_SIZE max_tx_size = max_txsize_lookup[bsize];
      const int txb_size = txsize_to_bsize[max_tx_size];
627
628
629
      const int bs = num_4x4_blocks_wide_lookup[txb_size];
      const int width  = num_4x4_blocks_wide_lookup[bsize];
      const int height = num_4x4_blocks_high_lookup[bsize];
630
631
632
      int idx, idy;
      for (idy = 0; idy < height; idy += bs)
        for (idx = 0; idx < width; idx += bs)
633
          write_tx_size_inter(cm, xd, mbmi, max_tx_size, idy, idx, w);
634
    } else {
635
636
637
      set_txfm_ctx(xd->left_txfm_context, mbmi->tx_size, xd->n8_h);
      set_txfm_ctx(xd->above_txfm_context, mbmi->tx_size, xd->n8_w);

638
639
      write_selected_tx_size(cm, xd, w);
    }
640
641
642
  } else {
    set_txfm_ctx(xd->left_txfm_context, mbmi->tx_size, xd->n8_h);
    set_txfm_ctx(xd->above_txfm_context, mbmi->tx_size, xd->n8_w);
643
#else
644
  write_selected_tx_size(cm, xd, w);
645
#endif
Jingning Han's avatar
Jingning Han committed
646
647
648
649
650
  }

  if (!is_inter) {
    if (bsize >= BLOCK_8X8) {
      write_intra_mode(w, mode, cm->fc->y_mode_prob[size_group_lookup[bsize]]);
hui su's avatar
hui su committed
651
652
653
654
655
656
#if CONFIG_EXT_INTRA
      if (mode != DC_PRED && mode != TM_PRED) {
        write_uniform(w, 2 * MAX_ANGLE_DELTAS + 1,
                      MAX_ANGLE_DELTAS + mbmi->angle_delta[0]);
      }
#endif  // CONFIG_EXT_INTRA
Jingning Han's avatar
Jingning Han committed
657
658
659
660
661
662
663
664
665
666
667
668
    } else {
      int idx, idy;
      const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
      const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];
      for (idy = 0; idy < 2; idy += num_4x4_h) {
        for (idx = 0; idx < 2; idx += num_4x4_w) {
          const PREDICTION_MODE b_mode = mi->bmi[idy * 2 + idx].as_mode;
          write_intra_mode(w, b_mode, cm->fc->y_mode_prob[0]);
        }
      }
    }
    write_intra_mode(w, mbmi->uv_mode, cm->fc->uv_mode_prob[mode]);
hui su's avatar
hui su committed
669
#if CONFIG_EXT_INTRA
hui su's avatar
hui su committed
670
671
672
673
674
    if (mbmi->uv_mode != DC_PRED && mbmi->uv_mode != TM_PRED &&
        bsize >= BLOCK_8X8)
      write_uniform(w, 2 * MAX_ANGLE_DELTAS + 1,
                    MAX_ANGLE_DELTAS + mbmi->angle_delta[1]);

hui su's avatar
hui su committed
675
676
677
    if (bsize >= BLOCK_8X8)
      write_ext_intra_mode_info(cm, mbmi, w);
#endif  // CONFIG_EXT_INTRA
Jingning Han's avatar
Jingning Han committed
678
679
680
681
682
683
684
685
686
687
688
689
  } else {
    const int mode_ctx = mbmi_ext->mode_context[mbmi->ref_frame[0]];
    const vpx_prob *const inter_probs = cm->fc->inter_mode_probs[mode_ctx];
    write_ref_frames(cm, xd, w);

    // If segment skip is not enabled code the mode.
    if (!segfeature_active(seg, segment_id, SEG_LVL_SKIP)) {
      if (bsize >= BLOCK_8X8) {
        write_inter_mode(w, mode, inter_probs);
      }
    }

690
691
692
#if !CONFIG_EXT_INTERP
    write_switchable_interp_filter(cpi, xd, w);
#endif  // !CONFIG_EXT_INTERP
Jingning Han's avatar
Jingning Han committed
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718

    if (bsize < BLOCK_8X8) {
      const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
      const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];
      int idx, idy;
      for (idy = 0; idy < 2; idy += num_4x4_h) {
        for (idx = 0; idx < 2; idx += num_4x4_w) {
          const int j = idy * 2 + idx;
          const PREDICTION_MODE b_mode = mi->bmi[j].as_mode;
          write_inter_mode(w, b_mode, inter_probs);
          if (b_mode == NEWMV) {
            for (ref = 0; ref < 1 + is_compound; ++ref)
              vp10_encode_mv(cpi, w, &mi->bmi[j].as_mv[ref].as_mv,
                            &mbmi_ext->ref_mvs[mbmi->ref_frame[ref]][0].as_mv,
                            nmvc, allow_hp);
          }
        }
      }
    } else {
      if (mode == NEWMV) {
        for (ref = 0; ref < 1 + is_compound; ++ref)
          vp10_encode_mv(cpi, w, &mbmi->mv[ref].as_mv,
                        &mbmi_ext->ref_mvs[mbmi->ref_frame[ref]][0].as_mv, nmvc,
                        allow_hp);
      }
    }
719
720
721
#if CONFIG_EXT_INTERP
    write_switchable_interp_filter(cpi, xd, w);
#endif  // CONFIG_EXT_INTERP
Jingning Han's avatar
Jingning Han committed
722
  }
723
724

#if CONFIG_EXT_TX
725
726
  if (get_ext_tx_types(mbmi->tx_size, bsize, is_inter) > 1 &&
      cm->base_qindex > 0 && !mbmi->skip &&
727
      !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
728
729
730
731
732
733
    int eset = get_ext_tx_set(mbmi->tx_size, bsize, is_inter);
    if (is_inter) {
      if (eset > 0)
        vp10_write_token(w, vp10_ext_tx_inter_tree[eset],
                         cm->fc->inter_ext_tx_prob[eset][mbmi->tx_size],
                         &ext_tx_inter_encodings[eset][mbmi->tx_type]);
734
    } else if (ALLOW_INTRA_EXT_TX) {
735
736
737
738
739
740
      if (eset > 0)
        vp10_write_token(
            w, vp10_ext_tx_intra_tree[eset],
            cm->fc->intra_ext_tx_prob[eset][mbmi->tx_size][mbmi->mode],
            &ext_tx_intra_encodings[eset][mbmi->tx_type]);
    }
741
742
  }
#endif  // CONFIG_EXT_TX
Jingning Han's avatar
Jingning Han committed
743
744
}

hui su's avatar
hui su committed
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
static void write_palette_mode_info(const VP10_COMMON *cm,
                                    const MACROBLOCKD *xd,
                                    const MODE_INFO *const mi,
                                    vpx_writer *w) {
  const MB_MODE_INFO *const mbmi = &mi->mbmi;
  const MODE_INFO *const above_mi = xd->above_mi;
  const MODE_INFO *const left_mi = xd->left_mi;
  const BLOCK_SIZE bsize = mbmi->sb_type;
  const PALETTE_MODE_INFO *pmi = &mbmi->palette_mode_info;
  int palette_ctx = 0;
  int n, i;

  n = pmi->palette_size[0];
  if (above_mi)
    palette_ctx += (above_mi->mbmi.palette_mode_info.palette_size[0] > 0);
  if (left_mi)
    palette_ctx += (left_mi->mbmi.palette_mode_info.palette_size[0] > 0);
  vpx_write(w, n > 0,
            vp10_default_palette_y_mode_prob[bsize - BLOCK_8X8][palette_ctx]);
  if (n > 0) {
    vp10_write_token(w, vp10_palette_size_tree,
                     vp10_default_palette_y_size_prob[bsize - BLOCK_8X8],
                     &palette_size_encodings[n - 2]);
    for (i = 0; i < n; ++i)
      vpx_write_literal(w, pmi->palette_colors[i],
                        cm->bit_depth);
    write_uniform(w, n, pmi->palette_first_color_idx[0]);
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
775
static void write_mb_modes_kf(const VP10_COMMON *cm, const MACROBLOCKD *xd,
Jingning Han's avatar
Jingning Han committed
776
777
                              MODE_INFO **mi_8x8, vpx_writer *w) {
  const struct segmentation *const seg = &cm->seg;
778
  const struct segmentation_probs *const segp = &cm->fc->seg;
Jingning Han's avatar
Jingning Han committed
779
780
781
782
783
784
785
  const MODE_INFO *const mi = mi_8x8[0];
  const MODE_INFO *const above_mi = xd->above_mi;
  const MODE_INFO *const left_mi = xd->left_mi;
  const MB_MODE_INFO *const mbmi = &mi->mbmi;
  const BLOCK_SIZE bsize = mbmi->sb_type;

  if (seg->update_map)
786
    write_segment_id(w, seg, segp, mbmi->segment_id);
Jingning Han's avatar
Jingning Han committed
787
788
789
790
791
792
793

  write_skip(cm, xd, mbmi->segment_id, mi, w);

  if (bsize >= BLOCK_8X8 && cm->tx_mode == TX_MODE_SELECT)
    write_selected_tx_size(cm, xd, w);

  if (bsize >= BLOCK_8X8) {
794
795
    write_intra_mode(w, mbmi->mode,
                     get_y_mode_probs(cm, mi, above_mi, left_mi, 0));
hui su's avatar
hui su committed
796
797
798
799
800
#if CONFIG_EXT_INTRA
    if (mbmi->mode != DC_PRED && mbmi->mode != TM_PRED)
      write_uniform(w, 2 * MAX_ANGLE_DELTAS + 1,
                    MAX_ANGLE_DELTAS + mbmi->angle_delta[0]);
#endif  // CONFIG_EXT_INTRA
Jingning Han's avatar
Jingning Han committed
801
802
803
804
805
806
807
808
809
  } else {
    const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize];
    const int num_4x4_h = num_4x4_blocks_high_lookup[bsize];
    int idx, idy;

    for (idy = 0; idy < 2; idy += num_4x4_h) {
      for (idx = 0; idx < 2; idx += num_4x4_w) {
        const int block = idy * 2 + idx;
        write_intra_mode(w, mi->bmi[block].as_mode,
810
                         get_y_mode_probs(cm, mi, above_mi, left_mi, block));
Jingning Han's avatar
Jingning Han committed
811
812
813
814
      }
    }
  }

815
  write_intra_mode(w, mbmi->uv_mode, cm->fc->uv_mode_prob[mbmi->mode]);
hui su's avatar
hui su committed
816
817
818
819
820
821
#if CONFIG_EXT_INTRA
  if (mbmi->uv_mode != DC_PRED && mbmi->uv_mode != TM_PRED &&
      bsize >= BLOCK_8X8)
    write_uniform(w, 2 * MAX_ANGLE_DELTAS + 1,
                  MAX_ANGLE_DELTAS + mbmi->angle_delta[1]);
#endif  // CONFIG_EXT_INTRA
hui su's avatar
hui su committed
822

hui su's avatar
hui su committed
823
824
825
826
  if (bsize >= BLOCK_8X8 && cm->allow_screen_content_tools &&
      mbmi->mode == DC_PRED)
    write_palette_mode_info(cm, xd, mi, w);

827
828

#if CONFIG_EXT_TX
829
830
  if (get_ext_tx_types(mbmi->tx_size, bsize, 0) > 1 &&
      cm->base_qindex > 0 && !mbmi->skip &&
831
832
      !segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP) &&
      ALLOW_INTRA_EXT_TX) {
833
834
835
836
837
838
    int eset = get_ext_tx_set(mbmi->tx_size, bsize, 0);
    if (eset > 0)
      vp10_write_token(
          w, vp10_ext_tx_intra_tree[eset],
          cm->fc->intra_ext_tx_prob[eset][mbmi->tx_size][mbmi->mode],
          &ext_tx_intra_encodings[eset][mbmi->tx_type]);
839
840
  }
#endif  // CONFIG_EXT_TX
hui su's avatar
hui su committed
841
842
843
844
845

#if CONFIG_EXT_INTRA
  if (bsize >= BLOCK_8X8)
      write_ext_intra_mode_info(cm, mbmi, w);
#endif  // CONFIG_EXT_INTRA
Jingning Han's avatar
Jingning Han committed
846
847
}

Yaowu Xu's avatar
Yaowu Xu committed
848
static void write_modes_b(VP10_COMP *cpi, const TileInfo *const tile,
Jingning Han's avatar
Jingning Han committed
849
850
851
                          vpx_writer *w, TOKENEXTRA **tok,
                          const TOKENEXTRA *const tok_end,
                          int mi_row, int mi_col) {
Yaowu Xu's avatar
Yaowu Xu committed
852
  const VP10_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
853
854
  MACROBLOCKD *const xd = &cpi->td.mb.e_mbd;
  MODE_INFO *m;
855
  int plane;
Jingning Han's avatar
Jingning Han committed
856
857
858
859

  xd->mi = cm->mi_grid_visible + (mi_row * cm->mi_stride + mi_col);
  m = xd->mi[0];

860
  cpi->td.mb.mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col);
Jingning Han's avatar
Jingning Han committed
861
862
863
864
865
866
867
868

  set_mi_row_col(xd, tile,
                 mi_row, num_8x8_blocks_high_lookup[m->mbmi.sb_type],
                 mi_col, num_8x8_blocks_wide_lookup[m->mbmi.sb_type],
                 cm->mi_rows, cm->mi_cols);
  if (frame_is_intra_only(cm)) {
    write_mb_modes_kf(cm, xd, xd->mi, w);
  } else {
869
870
871
872
#if CONFIG_VAR_TX
    xd->above_txfm_context = cm->above_txfm_context + mi_col;
    xd->left_txfm_context = xd->left_txfm_context_buffer + (mi_row & 0x07);
#endif
Jingning Han's avatar
Jingning Han committed
873
874
875
    pack_inter_mode_mvs(cpi, m, w);
  }

hui su's avatar
hui su committed
876
877
878
879
880
881
882
  if (m->mbmi.palette_mode_info.palette_size[0] > 0) {
    assert(*tok < tok_end);
    pack_palette_tokens(w, tok, m->mbmi.sb_type,
                        m->mbmi.palette_mode_info.palette_size[0]);
    assert(*tok < tok_end);
  }

883
884
885
  if (!m->mbmi.skip) {
    assert(*tok < tok_end);
    for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
#if CONFIG_VAR_TX
      const struct macroblockd_plane *const pd = &xd->plane[plane];
      MB_MODE_INFO *mbmi = &m->mbmi;
      BLOCK_SIZE bsize = mbmi->sb_type;
      const BLOCK_SIZE plane_bsize =
          get_plane_block_size(VPXMAX(bsize, BLOCK_8X8), pd);

      const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
      const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
      int row, col;

      if (is_inter_block(mbmi)) {
        const TX_SIZE max_tx_size = max_txsize_lookup[plane_bsize];
        const BLOCK_SIZE txb_size = txsize_to_bsize[max_tx_size];
        int bw = num_4x4_blocks_wide_lookup[txb_size];
        int block = 0;
        const int step = 1 << (max_tx_size << 1);
        for (row = 0; row < num_4x4_h; row += bw) {
          for (col = 0; col < num_4x4_w; col += bw) {
            pack_txb_tokens(w, tok, tok_end, xd, mbmi, plane, plane_bsize,
                            cm->bit_depth, block, row, col, max_tx_size);
            block += step;
          }
        }
      } else {
        TX_SIZE tx = plane ? get_uv_tx_size(&m->mbmi, &xd->plane[plane])
                           : m->mbmi.tx_size;
        BLOCK_SIZE txb_size = txsize_to_bsize[tx];
        int bw = num_4x4_blocks_wide_lookup[txb_size];

        for (row = 0; row < num_4x4_h; row += bw)
          for (col = 0; col < num_4x4_w; col += bw)
            pack_mb_tokens(w, tok, tok_end, cm->bit_depth, tx);
      }
#else
921
922
923
      TX_SIZE tx = plane ? get_uv_tx_size(&m->mbmi, &xd->plane[plane])
                         : m->mbmi.tx_size;
      pack_mb_tokens(w, tok, tok_end, cm->bit_depth, tx);
924
#endif
925
926
927
928
      assert(*tok < tok_end && (*tok)->token == EOSB_TOKEN);
      (*tok)++;
    }
  }
Jingning Han's avatar
Jingning Han committed
929
930
}

Yaowu Xu's avatar
Yaowu Xu committed
931
static void write_partition(const VP10_COMMON *const cm,
Jingning Han's avatar
Jingning Han committed
932
933
934
935
                            const MACROBLOCKD *const xd,
                            int hbs, int mi_row, int mi_col,
                            PARTITION_TYPE p, BLOCK_SIZE bsize, vpx_writer *w) {
  const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize);
936
  const vpx_prob *const probs = cm->fc->partition_prob[ctx];
Jingning Han's avatar
Jingning Han committed
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
  const int has_rows = (mi_row + hbs) < cm->mi_rows;
  const int has_cols = (mi_col + hbs) < cm->mi_cols;

  if (has_rows && has_cols) {
    vp10_write_token(w, vp10_partition_tree, probs, &partition_encodings[p]);
  } else if (!has_rows && has_cols) {
    assert(p == PARTITION_SPLIT || p == PARTITION_HORZ);
    vpx_write(w, p == PARTITION_SPLIT, probs[1]);
  } else if (has_rows && !has_cols) {
    assert(p == PARTITION_SPLIT || p == PARTITION_VERT);
    vpx_write(w, p == PARTITION_SPLIT, probs[2]);
  } else {
    assert(p == PARTITION_SPLIT);
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
953
static void write_modes_sb(VP10_COMP *cpi,
Jingning Han's avatar
Jingning Han committed
954
955
956
                           const TileInfo *const tile, vpx_writer *w,
                           TOKENEXTRA **tok, const TOKENEXTRA *const tok_end,
                           int mi_row, int mi_col, BLOCK_SIZE bsize) {
Yaowu Xu's avatar
Yaowu Xu committed
957
  const VP10_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
  MACROBLOCKD *const xd = &cpi->td.mb.e_mbd;

  const int bsl = b_width_log2_lookup[bsize];
  const int bs = (1 << bsl) / 4;
  PARTITION_TYPE partition;
  BLOCK_SIZE subsize;
  const MODE_INFO *m = NULL;

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

  m = cm->mi_grid_visible[mi_row * cm->mi_stride + mi_col];

  partition = partition_lookup[bsl][m->mbmi.sb_type];
  write_partition(cm, xd, bs, mi_row, mi_col, partition, bsize, w);
  subsize = get_subsize(bsize, partition);
  if (subsize < BLOCK_8X8) {
    write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
  } else {
    switch (partition) {
      case PARTITION_NONE:
        write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
        break;
      case PARTITION_HORZ:
        write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
        if (mi_row + bs < cm->mi_rows)
          write_modes_b(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col);
        break;
      case PARTITION_VERT:
        write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col);
        if (mi_col + bs < cm->mi_cols)
          write_modes_b(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs);
        break;
      case PARTITION_SPLIT:
        write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col, subsize);
        write_modes_sb(cpi, tile, w, tok, tok_end, mi_row, mi_col + bs,
                       subsize);
        write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col,
                       subsize);
        write_modes_sb(cpi, tile, w, tok, tok_end, mi_row + bs, mi_col + bs,
                       subsize);
        break;
      default: