bitstream.c 180 KB
Newer Older
Jingning Han's avatar
Jingning Han committed
1
/*
Yaowu Xu's avatar
Yaowu Xu committed
2
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
Jingning Han's avatar
Jingning Han committed
3
 *
Yaowu Xu's avatar
Yaowu Xu committed
4
5
6
7
8
9
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
Jingning Han's avatar
Jingning Han committed
10
11
12
13
 */

#include <assert.h>
#include <limits.h>
14
#include <stdio.h>
Jingning Han's avatar
Jingning Han committed
15

Yaowu Xu's avatar
Yaowu Xu committed
16
#include "aom/aom_encoder.h"
17
#include "aom_dsp/bitwriter_buffer.h"
Yaowu Xu's avatar
Yaowu Xu committed
18
#include "aom_dsp/aom_dsp_common.h"
19
#include "aom_dsp/binary_codes_writer.h"
Yaowu Xu's avatar
Yaowu Xu committed
20
#include "aom_mem/aom_mem.h"
21
22
#include "aom_ports/mem_ops.h"
#include "aom_ports/system_state.h"
23
#if CONFIG_BITSTREAM_DEBUG
24
#include "aom_util/debug_util.h"
25
#endif  // CONFIG_BITSTREAM_DEBUG
Jingning Han's avatar
Jingning Han committed
26

27
#if CONFIG_CDEF
28
#include "av1/common/cdef.h"
29
#include "av1/common/clpf.h"
30
#endif  // CONFIG_CDEF
31
32
33
34
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/entropymv.h"
#include "av1/common/mvref_common.h"
35
#include "av1/common/odintrin.h"
36
37
#include "av1/common/pred_common.h"
#include "av1/common/reconinter.h"
hui su's avatar
hui su committed
38
39
40
#if CONFIG_EXT_INTRA
#include "av1/common/reconintra.h"
#endif  // CONFIG_EXT_INTRA
41
42
#include "av1/common/seg_common.h"
#include "av1/common/tile_common.h"
Jingning Han's avatar
Jingning Han committed
43

Alex Converse's avatar
Alex Converse committed
44
#if CONFIG_ANS
Alex Converse's avatar
Alex Converse committed
45
#include "aom_dsp/buf_ans.h"
Alex Converse's avatar
Alex Converse committed
46
#endif  // CONFIG_ANS
Angie Chiang's avatar
Angie Chiang committed
47
48
49
#if CONFIG_LV_MAP
#include "av1/encoder/encodetxb.h"
#endif  // CONFIG_LV_MAP
50
51
52
53
#include "av1/encoder/bitstream.h"
#include "av1/encoder/cost.h"
#include "av1/encoder/encodemv.h"
#include "av1/encoder/mcomp.h"
hui su's avatar
hui su committed
54
55
56
#if CONFIG_PALETTE && CONFIG_PALETTE_DELTA_ENCODING
#include "av1/encoder/palette.h"
#endif  // CONFIG_PALETTE && CONFIG_PALETTE_DELTA_ENCODING
57
58
59
#include "av1/encoder/segmentation.h"
#include "av1/encoder/subexp.h"
#include "av1/encoder/tokenize.h"
60
61
62
#if CONFIG_PVQ
#include "av1/encoder/pvq_encoder.h"
#endif
Jingning Han's avatar
Jingning Han committed
63

64
65
66
static struct av1_token intra_mode_encodings[INTRA_MODES];
static struct av1_token switchable_interp_encodings[SWITCHABLE_FILTERS];
static struct av1_token partition_encodings[PARTITION_TYPES];
67
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
68
static const struct av1_token
69
    inter_compound_mode_encodings[INTER_COMPOUND_MODES] = {
70
71
      { 2, 2 },  { 12, 4 }, { 52, 6 }, { 53, 6 },
      { 54, 6 }, { 55, 6 }, { 0, 1 },  { 7, 3 }
72
    };
73
#endif  // CONFIG_EXT_INTER
74
#if CONFIG_PALETTE
75
76
77
static struct av1_token palette_size_encodings[PALETTE_SIZES];
static struct av1_token palette_color_index_encodings[PALETTE_SIZES]
                                                     [PALETTE_COLORS];
78
#endif  // CONFIG_PALETTE
79

80
#if CONFIG_EXT_INTRA || CONFIG_FILTER_INTRA || CONFIG_PALETTE
Yaowu Xu's avatar
Yaowu Xu committed
81
static INLINE void write_uniform(aom_writer *w, int n, int v) {
82
83
  const int l = get_unsigned_bits(n);
  const int m = (1 << l) - n;
84
  if (l == 0) return;
hui su's avatar
hui su committed
85
  if (v < m) {
Yaowu Xu's avatar
Yaowu Xu committed
86
    aom_write_literal(w, v, l - 1);
hui su's avatar
hui su committed
87
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
88
89
    aom_write_literal(w, m + ((v - m) >> 1), l - 1);
    aom_write_literal(w, (v - m) & 1, 1);
hui su's avatar
hui su committed
90
91
  }
}
92
#endif  // CONFIG_EXT_INTRA || CONFIG_FILTER_INTRA || CONFIG_PALETTE
Jingning Han's avatar
Jingning Han committed
93

94
#if CONFIG_EXT_TX
Yaowu Xu's avatar
Yaowu Xu committed
95
96
static struct av1_token ext_tx_inter_encodings[EXT_TX_SETS_INTER][TX_TYPES];
static struct av1_token ext_tx_intra_encodings[EXT_TX_SETS_INTRA][TX_TYPES];
97
#else
Yaowu Xu's avatar
Yaowu Xu committed
98
static struct av1_token ext_tx_encodings[TX_TYPES];
99
#endif  // CONFIG_EXT_TX
100
#if CONFIG_GLOBAL_MOTION
101
static struct av1_token global_motion_types_encodings[GLOBAL_TRANS_TYPES];
102
#endif  // CONFIG_GLOBAL_MOTION
103
#if CONFIG_EXT_INTRA
hui su's avatar
hui su committed
104
#if CONFIG_INTRA_INTERP
Yaowu Xu's avatar
Yaowu Xu committed
105
static struct av1_token intra_filter_encodings[INTRA_FILTERS];
hui su's avatar
hui su committed
106
#endif  // CONFIG_INTRA_INTERP
107
#endif  // CONFIG_EXT_INTRA
108
#if CONFIG_EXT_INTER
109
#if CONFIG_INTERINTRA
Yaowu Xu's avatar
Yaowu Xu committed
110
static struct av1_token interintra_mode_encodings[INTERINTRA_MODES];
111
#endif
112
#if CONFIG_COMPOUND_SEGMENT || CONFIG_WEDGE
113
static struct av1_token compound_type_encodings[COMPOUND_TYPES];
114
#endif  // CONFIG_COMPOUND_SEGMENT || CONFIG_WEDGE
115
#endif  // CONFIG_EXT_INTER
Yue Chen's avatar
Yue Chen committed
116
117
118
#if CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
static struct av1_token motion_mode_encodings[MOTION_MODES];
#endif  // CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
119
120
121
#if CONFIG_LOOP_RESTORATION
static struct av1_token switchable_restore_encodings[RESTORE_SWITCHABLE_TYPES];
#endif  // CONFIG_LOOP_RESTORATION
122
123
124
static void write_uncompressed_header(AV1_COMP *cpi,
                                      struct aom_write_bit_buffer *wb);
static uint32_t write_compressed_header(AV1_COMP *cpi, uint8_t *data);
125
126
127
128
129
static int remux_tiles(const AV1_COMMON *const cm, uint8_t *dst,
                       const uint32_t data_size, const uint32_t max_tile_size,
                       const uint32_t max_tile_col_size,
                       int *const tile_size_bytes,
                       int *const tile_col_size_bytes);
130

Yaowu Xu's avatar
Yaowu Xu committed
131
void av1_encode_token_init(void) {
132
#if CONFIG_EXT_TX || CONFIG_PALETTE
133
  int s;
134
135
#endif  // CONFIG_EXT_TX || CONFIG_PALETTE
#if CONFIG_EXT_TX
136
  for (s = 1; s < EXT_TX_SETS_INTER; ++s) {
Yaowu Xu's avatar
Yaowu Xu committed
137
    av1_tokens_from_tree(ext_tx_inter_encodings[s], av1_ext_tx_inter_tree[s]);
138
139
  }
  for (s = 1; s < EXT_TX_SETS_INTRA; ++s) {
Yaowu Xu's avatar
Yaowu Xu committed
140
    av1_tokens_from_tree(ext_tx_intra_encodings[s], av1_ext_tx_intra_tree[s]);
141
  }
142
#else
Yaowu Xu's avatar
Yaowu Xu committed
143
  av1_tokens_from_tree(ext_tx_encodings, av1_ext_tx_tree);
144
#endif  // CONFIG_EXT_TX
145
146
147
148
  av1_tokens_from_tree(intra_mode_encodings, av1_intra_mode_tree);
  av1_tokens_from_tree(switchable_interp_encodings, av1_switchable_interp_tree);
  av1_tokens_from_tree(partition_encodings, av1_partition_tree);

149
150
#if CONFIG_PALETTE
  av1_tokens_from_tree(palette_size_encodings, av1_palette_size_tree);
151
  for (s = 0; s < PALETTE_SIZES; ++s) {
152
153
    av1_tokens_from_tree(palette_color_index_encodings[s],
                         av1_palette_color_index_tree[s]);
154
155
156
  }
#endif  // CONFIG_PALETTE

157
#if CONFIG_EXT_INTRA && CONFIG_INTRA_INTERP
Yaowu Xu's avatar
Yaowu Xu committed
158
  av1_tokens_from_tree(intra_filter_encodings, av1_intra_filter_tree);
159
#endif  // CONFIG_EXT_INTRA && CONFIG_INTRA_INTERP
160
#if CONFIG_EXT_INTER
161
#if CONFIG_INTERINTRA
Yaowu Xu's avatar
Yaowu Xu committed
162
  av1_tokens_from_tree(interintra_mode_encodings, av1_interintra_mode_tree);
163
#endif  // CONFIG_INTERINTRA
164
#if CONFIG_COMPOUND_SEGMENT || CONFIG_WEDGE
165
  av1_tokens_from_tree(compound_type_encodings, av1_compound_type_tree);
166
#endif  // CONFIG_COMPOUND_SEGMENT || CONFIG_WEDGE
167
#endif  // CONFIG_EXT_INTER
Yue Chen's avatar
Yue Chen committed
168
169
170
#if CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
  av1_tokens_from_tree(motion_mode_encodings, av1_motion_mode_tree);
#endif  // CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
171
#if CONFIG_GLOBAL_MOTION
Yaowu Xu's avatar
Yaowu Xu committed
172
173
  av1_tokens_from_tree(global_motion_types_encodings,
                       av1_global_motion_types_tree);
174
#endif  // CONFIG_GLOBAL_MOTION
175
176
177
178
#if CONFIG_LOOP_RESTORATION
  av1_tokens_from_tree(switchable_restore_encodings,
                       av1_switchable_restore_tree);
#endif  // CONFIG_LOOP_RESTORATION
179

180
  /* This hack is necessary when CONFIG_DUAL_FILTER is enabled because the five
181
182
183
      SWITCHABLE_FILTERS are not consecutive, e.g., 0, 1, 2, 3, 4, when doing
      an in-order traversal of the av1_switchable_interp_tree structure. */
  av1_indices_from_tree(av1_switchable_interp_ind, av1_switchable_interp_inv,
Jingning Han's avatar
Jingning Han committed
184
                        av1_switchable_interp_tree);
185
186
187
/* This hack is necessary because the four TX_TYPES are not consecutive,
    e.g., 0, 1, 2, 3, when doing an in-order traversal of the av1_ext_tx_tree
    structure. */
188
189
190
#if CONFIG_EXT_TX
  for (s = 1; s < EXT_TX_SETS_INTRA; ++s)
    av1_indices_from_tree(av1_ext_tx_intra_ind[s], av1_ext_tx_intra_inv[s],
Jingning Han's avatar
Jingning Han committed
191
                          av1_ext_tx_intra_tree[s]);
192
193
  for (s = 1; s < EXT_TX_SETS_INTER; ++s)
    av1_indices_from_tree(av1_ext_tx_inter_ind[s], av1_ext_tx_inter_inv[s],
Jingning Han's avatar
Jingning Han committed
194
                          av1_ext_tx_inter_tree[s]);
195
#else
Jingning Han's avatar
Jingning Han committed
196
  av1_indices_from_tree(av1_ext_tx_ind, av1_ext_tx_inv, av1_ext_tx_tree);
David Barker's avatar
David Barker committed
197
#endif
Jingning Han's avatar
Jingning Han committed
198
  av1_indices_from_tree(av1_intra_mode_ind, av1_intra_mode_inv,
199
                        av1_intra_mode_tree);
200
201
}

Jingning Han's avatar
Jingning Han committed
202
203
204
205
static void write_intra_mode_kf(const AV1_COMMON *cm, FRAME_CONTEXT *frame_ctx,
                                const MODE_INFO *mi, const MODE_INFO *above_mi,
                                const MODE_INFO *left_mi, int block,
                                PREDICTION_MODE mode, aom_writer *w) {
Alex Converse's avatar
Alex Converse committed
206
207
208
#if CONFIG_INTRABC
  assert(!is_intrabc_block(&mi->mbmi));
#endif  // CONFIG_INTRABC
Jingning Han's avatar
Jingning Han committed
209
210
211
212
213
  aom_write_symbol(w, av1_intra_mode_ind[mode],
                   get_y_mode_cdf(frame_ctx, mi, above_mi, left_mi, block),
                   INTRA_MODES);
  (void)cm;
}
Jingning Han's avatar
Jingning Han committed
214

215
#if CONFIG_EXT_INTER && CONFIG_INTERINTRA
Yaowu Xu's avatar
Yaowu Xu committed
216
217
218
219
static void write_interintra_mode(aom_writer *w, INTERINTRA_MODE mode,
                                  const aom_prob *probs) {
  av1_write_token(w, av1_interintra_mode_tree, probs,
                  &interintra_mode_encodings[mode]);
220
}
221
#endif  // CONFIG_EXT_INTER && CONFIG_INTERINTRA
222

223
static void write_inter_mode(aom_writer *w, PREDICTION_MODE mode,
224
                             FRAME_CONTEXT *ec_ctx, const int16_t mode_ctx) {
225
  const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK;
226
  const aom_prob newmv_prob = ec_ctx->newmv_prob[newmv_ctx];
Yue Chen's avatar
Yue Chen committed
227

Jingning Han's avatar
Jingning Han committed
228
  aom_write(w, mode != NEWMV, newmv_prob);
229

Jingning Han's avatar
Jingning Han committed
230
  if (mode != NEWMV) {
231
    const int16_t zeromv_ctx = (mode_ctx >> ZEROMV_OFFSET) & ZEROMV_CTX_MASK;
232
    const aom_prob zeromv_prob = ec_ctx->zeromv_prob[zeromv_ctx];
233
234
235
236
237
238

    if (mode_ctx & (1 << ALL_ZERO_FLAG_OFFSET)) {
      assert(mode == ZEROMV);
      return;
    }

Yaowu Xu's avatar
Yaowu Xu committed
239
    aom_write(w, mode != ZEROMV, zeromv_prob);
240
241

    if (mode != ZEROMV) {
242
      int16_t refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK;
Yaowu Xu's avatar
Yaowu Xu committed
243
      aom_prob refmv_prob;
244

245
246
247
      if (mode_ctx & (1 << SKIP_NEARESTMV_OFFSET)) refmv_ctx = 6;
      if (mode_ctx & (1 << SKIP_NEARMV_OFFSET)) refmv_ctx = 7;
      if (mode_ctx & (1 << SKIP_NEARESTMV_SUB8X8_OFFSET)) refmv_ctx = 8;
248

249
      refmv_prob = ec_ctx->refmv_prob[refmv_ctx];
Yaowu Xu's avatar
Yaowu Xu committed
250
      aom_write(w, mode != NEARESTMV, refmv_prob);
251
252
    }
  }
Jingning Han's avatar
Jingning Han committed
253
254
}

Yaowu Xu's avatar
Yaowu Xu committed
255
256
257
static void write_drl_idx(const AV1_COMMON *cm, const MB_MODE_INFO *mbmi,
                          const MB_MODE_INFO_EXT *mbmi_ext, aom_writer *w) {
  uint8_t ref_frame_type = av1_ref_frame_type(mbmi->ref_frame);
258
259
260

  assert(mbmi->ref_mv_idx < 3);

261
262
263
#if CONFIG_EXT_INTER
  if (mbmi->mode == NEWMV || mbmi->mode == NEW_NEWMV) {
#else
264
  if (mbmi->mode == NEWMV) {
265
#endif
266
267
268
269
    int idx;
    for (idx = 0; idx < 2; ++idx) {
      if (mbmi_ext->ref_mv_count[ref_frame_type] > idx + 1) {
        uint8_t drl_ctx =
Yaowu Xu's avatar
Yaowu Xu committed
270
271
            av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx);
        aom_prob drl_prob = cm->fc->drl_prob[drl_ctx];
272

Yaowu Xu's avatar
Yaowu Xu committed
273
        aom_write(w, mbmi->ref_mv_idx != idx, drl_prob);
274
        if (mbmi->ref_mv_idx == idx) return;
275
      }
276
277
278
279
    }
    return;
  }

David Barker's avatar
David Barker committed
280
  if (have_nearmv_in_inter_mode(mbmi->mode)) {
281
282
283
284
285
    int idx;
    // TODO(jingning): Temporary solution to compensate the NEARESTMV offset.
    for (idx = 1; idx < 3; ++idx) {
      if (mbmi_ext->ref_mv_count[ref_frame_type] > idx + 1) {
        uint8_t drl_ctx =
Yaowu Xu's avatar
Yaowu Xu committed
286
287
            av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx);
        aom_prob drl_prob = cm->fc->drl_prob[drl_ctx];
288

Yaowu Xu's avatar
Yaowu Xu committed
289
        aom_write(w, mbmi->ref_mv_idx != (idx - 1), drl_prob);
290
        if (mbmi->ref_mv_idx == (idx - 1)) return;
291
      }
292
    }
293
    return;
294
295
296
  }
}

297
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
298
static void write_inter_compound_mode(AV1_COMMON *cm, aom_writer *w,
299
300
                                      PREDICTION_MODE mode,
                                      const int16_t mode_ctx) {
Yaowu Xu's avatar
Yaowu Xu committed
301
  const aom_prob *const inter_compound_probs =
302
      cm->fc->inter_compound_mode_probs[mode_ctx];
303
304

  assert(is_inter_compound_mode(mode));
Yaowu Xu's avatar
Yaowu Xu committed
305
306
  av1_write_token(w, av1_inter_compound_mode_tree, inter_compound_probs,
                  &inter_compound_mode_encodings[INTER_COMPOUND_OFFSET(mode)]);
307
308
309
}
#endif  // CONFIG_EXT_INTER

Yaowu Xu's avatar
Yaowu Xu committed
310
static void encode_unsigned_max(struct aom_write_bit_buffer *wb, int data,
311
                                int max) {
Yaowu Xu's avatar
Yaowu Xu committed
312
  aom_wb_write_literal(wb, data, get_unsigned_bits(max));
Jingning Han's avatar
Jingning Han committed
313
314
}

315
316
#if !CONFIG_EC_ADAPT || \
    (CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION || CONFIG_EXT_INTER)
Yaowu Xu's avatar
Yaowu Xu committed
317
318
static void prob_diff_update(const aom_tree_index *tree,
                             aom_prob probs[/*n - 1*/],
319
                             const unsigned int counts[/*n - 1*/], int n,
320
                             int probwt, aom_writer *w) {
Jingning Han's avatar
Jingning Han committed
321
322
323
324
325
326
  int i;
  unsigned int branch_ct[32][2];

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

Yaowu Xu's avatar
Yaowu Xu committed
327
  av1_tree_probs_from_distribution(tree, branch_ct, counts);
Jingning Han's avatar
Jingning Han committed
328
  for (i = 0; i < n - 1; ++i)
329
    av1_cond_prob_diff_update(w, &probs[i], branch_ct[i], probwt);
Jingning Han's avatar
Jingning Han committed
330
}
331
332
#endif

333
#if CONFIG_EXT_INTER || !CONFIG_EC_ADAPT
Yaowu Xu's avatar
Yaowu Xu committed
334
335
static int prob_diff_update_savings(const aom_tree_index *tree,
                                    aom_prob probs[/*n - 1*/],
336
337
                                    const unsigned int counts[/*n - 1*/], int n,
                                    int probwt) {
338
339
340
341
342
343
  int i;
  unsigned int branch_ct[32][2];
  int savings = 0;

  // Assuming max number of probabilities <= 32
  assert(n <= 32);
Yaowu Xu's avatar
Yaowu Xu committed
344
  av1_tree_probs_from_distribution(tree, branch_ct, counts);
345
  for (i = 0; i < n - 1; ++i) {
346
347
    savings +=
        av1_cond_prob_diff_update_savings(&probs[i], branch_ct[i], probwt);
348
349
350
  }
  return savings;
}
351
#endif  // CONFIG_EXT_INTER || !CONFIG_EC_ADAPT
352

353
#if CONFIG_VAR_TX
Yaowu Xu's avatar
Yaowu Xu committed
354
static void write_tx_size_vartx(const AV1_COMMON *cm, const MACROBLOCKD *xd,
355
                                const MB_MODE_INFO *mbmi, TX_SIZE tx_size,
356
357
                                int depth, int blk_row, int blk_col,
                                aom_writer *w) {
358
359
  const int tx_row = blk_row >> 1;
  const int tx_col = blk_col >> 1;
360
361
362
  const int max_blocks_high = max_block_high(xd, mbmi->sb_type, 0);
  const int max_blocks_wide = max_block_wide(xd, mbmi->sb_type, 0);

363
364
  int ctx = txfm_partition_context(xd->above_txfm_context + blk_col,
                                   xd->left_txfm_context + blk_row,
365
                                   mbmi->sb_type, tx_size);
366

367
  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
368

Jingning Han's avatar
Jingning Han committed
369
  if (depth == MAX_VARTX_DEPTH) {
370
371
    txfm_partition_update(xd->above_txfm_context + blk_col,
                          xd->left_txfm_context + blk_row, tx_size, tx_size);
372
373
374
    return;
  }

375
  if (tx_size == mbmi->inter_tx_size[tx_row][tx_col]) {
Yaowu Xu's avatar
Yaowu Xu committed
376
    aom_write(w, 0, cm->fc->txfm_partition_prob[ctx]);
377
378
    txfm_partition_update(xd->above_txfm_context + blk_col,
                          xd->left_txfm_context + blk_row, tx_size, tx_size);
379
  } else {
380
381
    const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
    const int bsl = tx_size_wide_unit[sub_txs];
382
    int i;
383

Yaowu Xu's avatar
Yaowu Xu committed
384
    aom_write(w, 1, cm->fc->txfm_partition_prob[ctx]);
385

386
    if (tx_size == TX_8X8) {
387
388
      txfm_partition_update(xd->above_txfm_context + blk_col,
                            xd->left_txfm_context + blk_row, sub_txs, tx_size);
389
      return;
390
    }
391
392
393

    assert(bsl > 0);
    for (i = 0; i < 4; ++i) {
394
395
396
397
      int offsetr = blk_row + (i >> 1) * bsl;
      int offsetc = blk_col + (i & 0x01) * bsl;
      write_tx_size_vartx(cm, xd, mbmi, sub_txs, depth + 1, offsetr, offsetc,
                          w);
398
399
400
    }
  }
}
401

Yaowu Xu's avatar
Yaowu Xu committed
402
static void update_txfm_partition_probs(AV1_COMMON *cm, aom_writer *w,
403
                                        FRAME_COUNTS *counts, int probwt) {
404
405
  int k;
  for (k = 0; k < TXFM_PARTITION_CONTEXTS; ++k)
Yaowu Xu's avatar
Yaowu Xu committed
406
    av1_cond_prob_diff_update(w, &cm->fc->txfm_partition_prob[k],
407
                              counts->txfm_partition[k], probwt);
408
}
409
410
#endif

Yaowu Xu's avatar
Yaowu Xu committed
411
412
static void write_selected_tx_size(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                                   aom_writer *w) {
413
414
  const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  const BLOCK_SIZE bsize = mbmi->sb_type;
415
416
417
418
419
420
#if CONFIG_EC_ADAPT
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
#else
  FRAME_CONTEXT *ec_ctx = cm->fc;
#endif
421
// For sub8x8 blocks the tx_size symbol does not need to be sent
422
#if CONFIG_CB4X4 && (CONFIG_VAR_TX || CONFIG_EXT_TX) && CONFIG_RECT_TX
423
424
  if (bsize > BLOCK_4X4) {
#else
425
  if (bsize >= BLOCK_8X8) {
426
#endif
427
428
429
430
431
432
    const TX_SIZE tx_size = mbmi->tx_size;
    const int is_inter = is_inter_block(mbmi);
    const int tx_size_ctx = get_tx_size_context(xd);
    const int tx_size_cat = is_inter ? inter_tx_size_cat_lookup[bsize]
                                     : intra_tx_size_cat_lookup[bsize];
    const TX_SIZE coded_tx_size = txsize_sqr_up_map[tx_size];
433
    const int depth = tx_size_to_depth(coded_tx_size);
434
#if CONFIG_EXT_TX && CONFIG_RECT_TX
435
    assert(IMPLIES(is_rect_tx(tx_size), is_rect_tx_allowed(xd, mbmi)));
436
437
#endif  // CONFIG_EXT_TX && CONFIG_RECT_TX

438
    aom_write_symbol(w, depth, ec_ctx->tx_size_cdf[tx_size_cat][tx_size_ctx],
439
                     tx_size_cat + 2);
440
441
442
443
444
#if CONFIG_EXT_TX && CONFIG_RECT_TX && CONFIG_RECT_TX_EXT
    if (is_quarter_tx_allowed(xd, mbmi, is_inter) && tx_size != coded_tx_size)
      aom_write(w, tx_size == quarter_txsize_lookup[bsize],
                cm->fc->quarter_tx_size_prob);
#endif  // CONFIG_EXT_TX && CONFIG_RECT_TX && CONFIG_RECT_TX_EXT
Jingning Han's avatar
Jingning Han committed
445
446
447
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
448
static void update_inter_mode_probs(AV1_COMMON *cm, aom_writer *w,
449
450
                                    FRAME_COUNTS *counts) {
  int i;
451
452
453
454
455
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
456
  for (i = 0; i < NEWMV_MODE_CONTEXTS; ++i)
457
458
    av1_cond_prob_diff_update(w, &cm->fc->newmv_prob[i], counts->newmv_mode[i],
                              probwt);
459
  for (i = 0; i < ZEROMV_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
460
    av1_cond_prob_diff_update(w, &cm->fc->zeromv_prob[i],
461
                              counts->zeromv_mode[i], probwt);
462
  for (i = 0; i < REFMV_MODE_CONTEXTS; ++i)
463
464
    av1_cond_prob_diff_update(w, &cm->fc->refmv_prob[i], counts->refmv_mode[i],
                              probwt);
465
  for (i = 0; i < DRL_MODE_CONTEXTS; ++i)
466
467
    av1_cond_prob_diff_update(w, &cm->fc->drl_prob[i], counts->drl_mode[i],
                              probwt);
468
469
}

470
#if CONFIG_EXT_INTER
471
472
static void update_inter_compound_mode_probs(AV1_COMMON *cm, int probwt,
                                             aom_writer *w) {
Yaowu Xu's avatar
Yaowu Xu committed
473
474
  const int savings_thresh = av1_cost_one(GROUP_DIFF_UPDATE_PROB) -
                             av1_cost_zero(GROUP_DIFF_UPDATE_PROB);
475
476
477
478
  int i;
  int savings = 0;
  int do_update = 0;
  for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
479
    savings += prob_diff_update_savings(
Yaowu Xu's avatar
Yaowu Xu committed
480
        av1_inter_compound_mode_tree, cm->fc->inter_compound_mode_probs[i],
481
        cm->counts.inter_compound_mode[i], INTER_COMPOUND_MODES, probwt);
482
483
  }
  do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
484
  aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
485
486
  if (do_update) {
    for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
487
      prob_diff_update(
Yaowu Xu's avatar
Yaowu Xu committed
488
          av1_inter_compound_mode_tree, cm->fc->inter_compound_mode_probs[i],
489
          cm->counts.inter_compound_mode[i], INTER_COMPOUND_MODES, probwt, w);
490
491
492
493
494
    }
  }
}
#endif  // CONFIG_EXT_INTER

Yaowu Xu's avatar
Yaowu Xu committed
495
496
static int write_skip(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                      int segment_id, const MODE_INFO *mi, aom_writer *w) {
Jingning Han's avatar
Jingning Han committed
497
498
499
500
  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
    return 1;
  } else {
    const int skip = mi->mbmi.skip;
Yaowu Xu's avatar
Yaowu Xu committed
501
    aom_write(w, skip, av1_get_skip_prob(cm, xd));
Jingning Han's avatar
Jingning Han committed
502
503
504
505
    return skip;
  }
}

Yue Chen's avatar
Yue Chen committed
506
#if CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION
507
static void write_motion_mode(const AV1_COMMON *cm, const MODE_INFO *mi,
Yue Chen's avatar
Yue Chen committed
508
                              aom_writer *w) {
509
510
511
512
513
514
  const MB_MODE_INFO *mbmi = &mi->mbmi;
  MOTION_MODE last_motion_mode_allowed = motion_mode_allowed(
#if CONFIG_GLOBAL_MOTION && SEPARATE_GLOBAL_MOTION
      0, cm->global_motion,
#endif  // CONFIG_GLOBAL_MOTION && SEPARATE_GLOBAL_MOTION
      mi);
Yue Chen's avatar
Yue Chen committed
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531

  if (last_motion_mode_allowed == SIMPLE_TRANSLATION) return;
#if CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION
  if (last_motion_mode_allowed == OBMC_CAUSAL) {
    aom_write(w, mbmi->motion_mode == OBMC_CAUSAL,
              cm->fc->obmc_prob[mbmi->sb_type]);
  } else {
#endif  // CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION
    av1_write_token(w, av1_motion_mode_tree,
                    cm->fc->motion_mode_prob[mbmi->sb_type],
                    &motion_mode_encodings[mbmi->motion_mode]);
#if CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION
  }
#endif  // CONFIG_MOTION_VAR && CONFIG_WARPED_MOTION
}
#endif  // CONFIG_MOTION_VAR || CONFIG_WARPED_MOTION

532
#if CONFIG_DELTA_Q
Thomas Davies's avatar
Thomas Davies committed
533
534
static void write_delta_qindex(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                               int delta_qindex, aom_writer *w) {
535
536
  int sign = delta_qindex < 0;
  int abs = sign ? -delta_qindex : delta_qindex;
Thomas Davies's avatar
Thomas Davies committed
537
  int rem_bits, thr;
538
  int smallval = abs < DELTA_Q_SMALL ? 1 : 0;
Thomas Davies's avatar
Thomas Davies committed
539
540
541
542
543
544
545
#if CONFIG_EC_ADAPT
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
#else
  FRAME_CONTEXT *ec_ctx = cm->fc;
  (void)xd;
#endif
546

Thomas Davies's avatar
Thomas Davies committed
547
548
  aom_write_symbol(w, AOMMIN(abs, DELTA_Q_SMALL), ec_ctx->delta_q_cdf,
                   DELTA_Q_PROBS + 1);
549
550
551
552
553
554

  if (!smallval) {
    rem_bits = OD_ILOG_NZ(abs - 1) - 1;
    thr = (1 << rem_bits) + 1;
    aom_write_literal(w, rem_bits, 3);
    aom_write_literal(w, abs - thr, rem_bits);
555
556
557
558
559
  }
  if (abs > 0) {
    aom_write_bit(w, sign);
  }
}
560

Thomas Davies's avatar
Thomas Davies committed
561
#if !CONFIG_EC_ADAPT
562
563
564
static void update_delta_q_probs(AV1_COMMON *cm, aom_writer *w,
                                 FRAME_COUNTS *counts) {
  int k;
565
566
567
568
569
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
Fangwen Fu's avatar
Fangwen Fu committed
570
571
572
#if CONFIG_EXT_DELTA_Q
  if (!cm->delta_q_present_flag) return;
#endif  // CONFIG_EXT_DELTA_Q
573
  for (k = 0; k < DELTA_Q_PROBS; ++k) {
574
575
    av1_cond_prob_diff_update(w, &cm->fc->delta_q_prob[k], counts->delta_q[k],
                              probwt);
576
577
  }
}
Thomas Davies's avatar
Thomas Davies committed
578
#endif  // CONFIG_EC_ADAPT
Fangwen Fu's avatar
Fangwen Fu committed
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625

#if CONFIG_EXT_DELTA_Q
static void write_delta_lflevel(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                                int delta_lflevel, aom_writer *w) {
  int sign = delta_lflevel < 0;
  int abs = sign ? -delta_lflevel : delta_lflevel;
  int rem_bits, thr;
  int smallval = abs < DELTA_LF_SMALL ? 1 : 0;
#if CONFIG_EC_ADAPT
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
#else
  FRAME_CONTEXT *ec_ctx = cm->fc;
  (void)xd;
#endif

  aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL), ec_ctx->delta_lf_cdf,
                   DELTA_LF_PROBS + 1);

  if (!smallval) {
    rem_bits = OD_ILOG_NZ(abs - 1) - 1;
    thr = (1 << rem_bits) + 1;
    aom_write_literal(w, rem_bits, 3);
    aom_write_literal(w, abs - thr, rem_bits);
  }
  if (abs > 0) {
    aom_write_bit(w, sign);
  }
}

#if !CONFIG_EC_ADAPT
static void update_delta_lf_probs(AV1_COMMON *cm, aom_writer *w,
                                  FRAME_COUNTS *counts) {
  int k;
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
  if (!cm->delta_lf_present_flag) return;
  for (k = 0; k < DELTA_LF_PROBS; ++k) {
    av1_cond_prob_diff_update(w, &cm->fc->delta_lf_prob[k], counts->delta_lf[k],
                              probwt);
  }
}
#endif  // CONFIG_EC_ADAPT
#endif  // CONFIG_EXT_DELTA_Q
Thomas Davies's avatar
Thomas Davies committed
626
#endif  // CONFIG_DELTA_Q
627

Yaowu Xu's avatar
Yaowu Xu committed
628
static void update_skip_probs(AV1_COMMON *cm, aom_writer *w,
Jingning Han's avatar
Jingning Han committed
629
630
                              FRAME_COUNTS *counts) {
  int k;
631
632
633
634
635
636
637
638
639
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
  for (k = 0; k < SKIP_CONTEXTS; ++k) {
    av1_cond_prob_diff_update(w, &cm->fc->skip_probs[k], counts->skip[k],
                              probwt);
  }
Jingning Han's avatar
Jingning Han committed
640
641
}

642
#if !CONFIG_EC_ADAPT
Yaowu Xu's avatar
Yaowu Xu committed
643
static void update_switchable_interp_probs(AV1_COMMON *cm, aom_writer *w,
Jingning Han's avatar
Jingning Han committed
644
645
                                           FRAME_COUNTS *counts) {
  int j;
646
  for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) {
647
648
649
650
651
652
653
654
#if CONFIG_TILE_GROUPS
    const int probwt = cm->num_tg;
#else
    const int probwt = 1;
#endif
    prob_diff_update(
        av1_switchable_interp_tree, cm->fc->switchable_interp_prob[j],
        counts->switchable_interp[j], SWITCHABLE_FILTERS, probwt, w);
655
  }
Jingning Han's avatar
Jingning Han committed
656
}
657
#endif
Jingning Han's avatar
Jingning Han committed
658

659
#if !CONFIG_EC_ADAPT
660
#if CONFIG_EXT_TX
Yaowu Xu's avatar
Yaowu Xu committed
661
662
663
static void update_ext_tx_probs(AV1_COMMON *cm, aom_writer *w) {
  const int savings_thresh = av1_cost_one(GROUP_DIFF_UPDATE_PROB) -
                             av1_cost_zero(GROUP_DIFF_UPDATE_PROB);
664
  int i, j;
665
  int s;
666
667
668
669
670
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
671
672
673
674
  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) {
675
      if (!use_inter_ext_tx_for_txsize[s][i]) continue;
676
      savings += prob_diff_update_savings(
Yaowu Xu's avatar
Yaowu Xu committed
677
          av1_ext_tx_inter_tree[s], cm->fc->inter_ext_tx_prob[s][i],
678
679
          cm->counts.inter_ext_tx[s][i],
          num_ext_tx_set[ext_tx_set_type_inter[s]], probwt);
680
681
    }
    do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
682
    aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
683
684
    if (do_update) {
      for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
685
        if (!use_inter_ext_tx_for_txsize[s][i]) continue;
686
687
688
689
        prob_diff_update(av1_ext_tx_inter_tree[s],
                         cm->fc->inter_ext_tx_prob[s][i],
                         cm->counts.inter_ext_tx[s][i],
                         num_ext_tx_set[ext_tx_set_type_inter[s]], probwt, w);
690
      }
691
692
    }
  }
693

694
695
696
697
  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) {
698
      if (!use_intra_ext_tx_for_txsize[s][i]) continue;
699
      for (j = 0; j < INTRA_MODES; ++j)
700
        savings += prob_diff_update_savings(
Yaowu Xu's avatar
Yaowu Xu committed
701
            av1_ext_tx_intra_tree[s], cm->fc->intra_ext_tx_prob[s][i][j],
702
703
            cm->counts.intra_ext_tx[s][i][j],
            num_ext_tx_set[ext_tx_set_type_intra[s]], probwt);
704
705
    }
    do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
706
    aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
707
708
    if (do_update) {
      for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
709
        if (!use_intra_ext_tx_for_txsize[s][i]) continue;
710
        for (j = 0; j < INTRA_MODES; ++j)
711
712
713
          prob_diff_update(av1_ext_tx_intra_tree[s],
                           cm->fc->intra_ext_tx_prob[s][i][j],
                           cm->counts.intra_ext_tx[s][i][j],
714
                           num_ext_tx_set[ext_tx_set_type_intra[s]], probwt, w);
715
716
      }
    }
717
  }
718
}
Debargha Mukherjee's avatar
Debargha Mukherjee committed
719

720
#else
Yaowu Xu's avatar
Yaowu Xu committed
721
722
723
static void update_ext_tx_probs(AV1_COMMON *cm, aom_writer *w) {
  const int savings_thresh = av1_cost_one(GROUP_DIFF_UPDATE_PROB) -
                             av1_cost_zero(GROUP_DIFF_UPDATE_PROB);
724
725
726
727
  int i, j;

  int savings = 0;
  int do_update = 0;
728
729
730
731
732
#if CONFIG_TILE_GROUPS
  const int probwt = cm->num_tg;
#else
  const int probwt = 1;
#endif
733
734
735
  for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
    for (j = 0; j < TX_TYPES; ++j)
      savings += prob_diff_update_savings(
Yaowu Xu's avatar
Yaowu Xu committed
736
          av1_ext_tx_tree, cm->fc->intra_ext_tx_prob[i][j],
737
          cm->counts.intra_ext_tx[i][j], TX_TYPES, probwt);
738
739
  }
  do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
740
  aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
741
742
  if (do_update) {
    for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
743
      for (j = 0; j < TX_TYPES; ++j) {
Yaowu Xu's avatar
Yaowu Xu committed
744
        prob_diff_update(av1_ext_tx_tree, cm->fc->intra_ext_tx_prob[i][j],
745
                         cm->counts.intra_ext_tx[i][j], TX_TYPES, probwt, w);
746
      }
747
748
    }
  }
749

750
751
  savings = 0;
  for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
752
    savings +=
Yaowu Xu's avatar
Yaowu Xu committed
753
        prob_diff_update_savings(av1_ext_tx_tree, cm->fc->inter_ext_tx_prob[i],
754
                                 cm->counts.inter_ext_tx[i], TX_TYPES, probwt);
755
756
  }
  do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
757
  aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
758
759
  if (do_update) {
    for (i = TX_4X4; i < EXT_TX_SIZES; ++i) {
Yaowu Xu's avatar
Yaowu Xu committed
760
      prob_diff_update(av1_ext_tx_tree, cm->fc->inter_ext_tx_prob[i],
761
                       cm->counts.inter_ext_tx[i], TX_TYPES, probwt, w);
762
763
764
    }
  }
}
765
#endif  // CONFIG_EXT_TX
766
#endif  // !CONFIG_EC_ADAPT
767
#if CONFIG_PALETTE
Yaowu Xu's avatar
Yaowu Xu committed
768
static void pack_palette_tokens(aom_writer *w, const TOKENEXTRA **tp, int n,
769
                                int num) {
hui su's avatar
hui su committed
770
  int i;
771
  const TOKENEXTRA *p = *tp;
hui su's avatar
hui su committed
772

773
  for (i = 0; i < num; ++i) {
774
775
776
    av1_write_token(
        w, av1_palette_color_index_tree[n - PALETTE_MIN_SIZE], p->context_tree,
        &palette_color_index_encodings[n - PALETTE_MIN_SIZE][p->token]);
hui su's avatar
hui su committed
777
778
779
780
781
    ++p;
  }

  *tp = p;
}
782
#endif  // CONFIG_PALETTE
783

784
#if !CONFIG_PVQ
785
#if CONFIG_SUPERTX
786
static void update_supertx_probs(AV1_COMMON *cm, int probwt, aom_writer *w) {
Yaowu Xu's avatar
Yaowu Xu committed
787
788
  const int savings_thresh = av1_cost_one(GROUP_DIFF_UPDATE_PROB) -
                             av1_cost_zero(GROUP_DIFF_UPDATE_PROB);
789
790
791
792
  int i, j;
  int savings = 0;
  int do_update = 0;
  for (i = 0; i < PARTITION_SUPERTX_CONTEXTS; ++i) {
Jingning Han's avatar
Jingning Han committed
793
    for (j = TX_8X8; j < TX_SIZES; ++j) {
794
795
      savings += av1_cond_prob_diff_update_savings(
          &cm->fc->supertx_prob[i][j], cm->counts.supertx[i][j], probwt);
796
797
798
    }
  }
  do_update = savings > savings_thresh;
Yaowu Xu's avatar
Yaowu Xu committed
799
  aom_write(w, do_update, GROUP_DIFF_UPDATE_PROB);
800
801
  if (do_update) {
    for (i = 0; i < PARTITION_SUPERTX_CONTEXTS; ++i) {
Jingning Han's avatar
Jingning Han committed
802
      for (j = TX_8X8; j < TX_SIZES; ++j) {
Yaowu Xu's avatar
Yaowu Xu committed
803
        av1_cond_prob_diff_update(w, &cm->fc->supertx_prob[i][j],
804
                                  cm->counts.supertx[i][j], probwt);
805
806
807
808
809
810
      }
    }
  }
}
#endif  // CONFIG_SUPERTX

811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
#if CONFIG_NEW_MULTISYMBOL
static INLINE void write_coeff_extra(const aom_cdf_prob *const *cdf, int val,
                                     int n, aom_writer *w) {
  // Code the extra bits from LSB to MSB in groups of 4
  int i = 0;
  int count = 0;
  while (count < n) {
    const int size = AOMMIN(n - count, 4);
    const int mask = (1 << size) - 1;
    aom_write_cdf(w, val & mask, cdf[i++], 1 << size);
    val >>= size;
    count += size;
  }
}
#else
static INLINE void write_coeff_extra(const aom_prob *pb, int value,
                                     int num_bits, int skip_bits, aom_writer *w,
                                     TOKEN_STATS *token_stats) {
  // Code the extra bits from MSB to LSB 1 bit at a time
  int index;
  for (index = skip_bits; index < num_bits; ++index) {
    const int shift = num_bits - index - 1;
    const int bb = (value >> shift) & 1;
    aom_write_record(w, bb, pb[index], token_stats);
  }
}
#endif

839
#if !CONFIG_LV_MAP
Yaowu Xu's avatar
Yaowu Xu committed
840
static void pack_mb_tokens(aom_writer *w, const TOKENEXTRA **tp,
841
                           const TOKENEXTRA *const stop,
842
843
                           aom_bit_depth_t bit_depth, const TX_SIZE tx_size,
                           TOKEN_STATS *token_stats) {
844
  const TOKENEXTRA *p = *tp;
Fangwen Fu's avatar
Fangwen Fu committed
845
#if CONFIG_VAR_TX
846
  int count = 0;
847
  const int seg_eob = tx_size_2d[tx_size];
848
#endif
Jingning Han's avatar
Jingning Han committed
849
850

  while (p < stop && p->token != EOSB_TOKEN) {
851
    const int token = p->token;
852
    const int eob_val = p->eob_val;
853
    if (token == BLOCK_Z_TOKEN) {
854
      aom_write_symbol(w, 0, *p->head_cdf, HEAD_TOKENS + 1);
855
      p++;
856
857
858
#if CONFIG_VAR_TX
      break;
#endif
859
860
      continue;
    }
Yaowu Xu's avatar
Yaowu Xu committed
861
862

    const av1_extra_bit *const extra_bits = &av1_extra_bits[token];
863
    if (eob_val == LAST_EOB) {
864