bitstream.c 183 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
17
#include "aom/aom_encoder.h"
#include "aom_dsp/aom_dsp_common.h"
18
#include "aom_dsp/binary_codes_writer.h"
19
#include "aom_dsp/bitwriter_buffer.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
#include "av1/common/cdef.h"
28
29
30
31
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/entropymv.h"
#include "av1/common/mvref_common.h"
32
#include "av1/common/odintrin.h"
33
34
#include "av1/common/pred_common.h"
#include "av1/common/reconinter.h"
hui su's avatar
hui su committed
35
36
37
#if CONFIG_EXT_INTRA
#include "av1/common/reconintra.h"
#endif  // CONFIG_EXT_INTRA
38
39
#include "av1/common/seg_common.h"
#include "av1/common/tile_common.h"
Jingning Han's avatar
Jingning Han committed
40

Angie Chiang's avatar
Angie Chiang committed
41
42
43
#if CONFIG_LV_MAP
#include "av1/encoder/encodetxb.h"
#endif  // CONFIG_LV_MAP
44
45
46
47
#include "av1/encoder/bitstream.h"
#include "av1/encoder/cost.h"
#include "av1/encoder/encodemv.h"
#include "av1/encoder/mcomp.h"
Urvang Joshi's avatar
Urvang Joshi committed
48
#if CONFIG_PALETTE_DELTA_ENCODING
hui su's avatar
hui su committed
49
#include "av1/encoder/palette.h"
Urvang Joshi's avatar
Urvang Joshi committed
50
#endif  // CONFIG_PALETTE_DELTA_ENCODING
51
52
53
#include "av1/encoder/segmentation.h"
#include "av1/encoder/subexp.h"
#include "av1/encoder/tokenize.h"
Jingning Han's avatar
Jingning Han committed
54

55
#define ENC_MISMATCH_DEBUG 0
56

57
#if CONFIG_COMPOUND_SINGLEREF
58
59
static struct av1_token
    inter_singleref_comp_mode_encodings[INTER_SINGLEREF_COMP_MODES];
60
#endif  // CONFIG_COMPOUND_SINGLEREF
61

Yaowu Xu's avatar
Yaowu Xu committed
62
static INLINE void write_uniform(aom_writer *w, int n, int v) {
63
64
  const int l = get_unsigned_bits(n);
  const int m = (1 << l) - n;
65
  if (l == 0) return;
hui su's avatar
hui su committed
66
  if (v < m) {
Yaowu Xu's avatar
Yaowu Xu committed
67
    aom_write_literal(w, v, l - 1);
hui su's avatar
hui su committed
68
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
69
70
    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
71
72
  }
}
Jingning Han's avatar
Jingning Han committed
73

Yaowu Xu's avatar
Yaowu Xu committed
74
static struct av1_token interintra_mode_encodings[INTERINTRA_MODES];
75
static struct av1_token compound_type_encodings[COMPOUND_TYPES];
76
#if CONFIG_LOOP_RESTORATION
77
78
static void loop_restoration_write_sb_coeffs(const AV1_COMMON *const cm,
                                             MACROBLOCKD *xd,
79
80
                                             const RestorationUnitInfo *rui,
                                             aom_writer *const w, int plane);
81
#endif  // CONFIG_LOOP_RESTORATION
82
83
84
85
86
87
88
89
#if CONFIG_OBU
static void write_uncompressed_header_obu(AV1_COMP *cpi,
                                          struct aom_write_bit_buffer *wb);
#else
static void write_uncompressed_header_frame(AV1_COMP *cpi,
                                            struct aom_write_bit_buffer *wb);
#endif

90
static uint32_t write_compressed_header(AV1_COMP *cpi, uint8_t *data);
91

92
#if !CONFIG_OBU || CONFIG_EXT_TILE
93
94
95
96
97
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);
98
#endif
Yaowu Xu's avatar
Yaowu Xu committed
99
100
void av1_encode_token_init(void) {
  av1_tokens_from_tree(interintra_mode_encodings, av1_interintra_mode_tree);
101
102
103
104
#if CONFIG_COMPOUND_SINGLEREF
  av1_tokens_from_tree(inter_singleref_comp_mode_encodings,
                       av1_inter_singleref_comp_mode_tree);
#endif  // CONFIG_COMPOUND_SINGLEREF
105
  av1_tokens_from_tree(compound_type_encodings, av1_compound_type_tree);
106
107
}

Jingning Han's avatar
Jingning Han committed
108
109
110
111
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
112
113
114
#if CONFIG_INTRABC
  assert(!is_intrabc_block(&mi->mbmi));
#endif  // CONFIG_INTRABC
Hui Su's avatar
Hui Su committed
115
  aom_write_symbol(w, mode,
Jingning Han's avatar
Jingning Han committed
116
117
118
119
                   get_y_mode_cdf(frame_ctx, mi, above_mi, left_mi, block),
                   INTRA_MODES);
  (void)cm;
}
Jingning Han's avatar
Jingning Han committed
120

121
static void write_inter_mode(aom_writer *w, PREDICTION_MODE mode,
122
                             FRAME_CONTEXT *ec_ctx, const int16_t mode_ctx) {
123
  const int16_t newmv_ctx = mode_ctx & NEWMV_CTX_MASK;
Yue Chen's avatar
Yue Chen committed
124

125
126
127
128
129
#if CONFIG_NEW_MULTISYMBOL
  aom_write_symbol(w, mode != NEWMV, ec_ctx->newmv_cdf[newmv_ctx], 2);
#else
  aom_write(w, mode != NEWMV, ec_ctx->newmv_prob[newmv_ctx]);
#endif
130

Jingning Han's avatar
Jingning Han committed
131
  if (mode != NEWMV) {
132
    if (mode_ctx & (1 << ALL_ZERO_FLAG_OFFSET)) {
Sarah Parker's avatar
Sarah Parker committed
133
      assert(mode == GLOBALMV);
134
135
136
      return;
    }

Sarah Parker's avatar
Sarah Parker committed
137
138
    const int16_t zeromv_ctx =
        (mode_ctx >> GLOBALMV_OFFSET) & GLOBALMV_CTX_MASK;
139
#if CONFIG_NEW_MULTISYMBOL
Sarah Parker's avatar
Sarah Parker committed
140
    aom_write_symbol(w, mode != GLOBALMV, ec_ctx->zeromv_cdf[zeromv_ctx], 2);
141
#else
Sarah Parker's avatar
Sarah Parker committed
142
    aom_write(w, mode != GLOBALMV, ec_ctx->zeromv_prob[zeromv_ctx]);
143
#endif
144

Sarah Parker's avatar
Sarah Parker committed
145
    if (mode != GLOBALMV) {
146
147
      int16_t refmv_ctx = (mode_ctx >> REFMV_OFFSET) & REFMV_CTX_MASK;

148
149
150
      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;
151
152
153
154
155
#if CONFIG_NEW_MULTISYMBOL
      aom_write_symbol(w, mode != NEARESTMV, ec_ctx->refmv_cdf[refmv_ctx], 2);
#else
      aom_write(w, mode != NEARESTMV, ec_ctx->refmv_prob[refmv_ctx]);
#endif
156
157
    }
  }
Jingning Han's avatar
Jingning Han committed
158
159
}

160
static void write_drl_idx(FRAME_CONTEXT *ec_ctx, const MB_MODE_INFO *mbmi,
Yaowu Xu's avatar
Yaowu Xu committed
161
162
                          const MB_MODE_INFO_EXT *mbmi_ext, aom_writer *w) {
  uint8_t ref_frame_type = av1_ref_frame_type(mbmi->ref_frame);
163
164
165

  assert(mbmi->ref_mv_idx < 3);

166
  const int new_mv =
167
#if CONFIG_COMPOUND_SINGLEREF
168
169
170
171
      mbmi->mode == SR_NEW_NEWMV ||
#endif
      mbmi->mode == NEWMV || mbmi->mode == NEW_NEWMV;
  if (new_mv) {
172
173
174
175
    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
176
            av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx);
177

178
179
180
181
182
183
#if CONFIG_NEW_MULTISYMBOL
        aom_write_symbol(w, mbmi->ref_mv_idx != idx, ec_ctx->drl_cdf[drl_ctx],
                         2);
#else
        aom_write(w, mbmi->ref_mv_idx != idx, ec_ctx->drl_prob[drl_ctx]);
#endif
184
        if (mbmi->ref_mv_idx == idx) return;
185
      }
186
187
188
189
    }
    return;
  }

David Barker's avatar
David Barker committed
190
  if (have_nearmv_in_inter_mode(mbmi->mode)) {
191
192
193
194
195
    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
196
            av1_drl_ctx(mbmi_ext->ref_mv_stack[ref_frame_type], idx);
197
198
199
200
201
202
#if CONFIG_NEW_MULTISYMBOL
        aom_write_symbol(w, mbmi->ref_mv_idx != (idx - 1),
                         ec_ctx->drl_cdf[drl_ctx], 2);
#else
        aom_write(w, mbmi->ref_mv_idx != (idx - 1), ec_ctx->drl_prob[drl_ctx]);
#endif
203
        if (mbmi->ref_mv_idx == (idx - 1)) return;
204
      }
205
    }
206
    return;
207
208
209
  }
}

210
211
static void write_inter_compound_mode(AV1_COMMON *cm, MACROBLOCKD *xd,
                                      aom_writer *w, PREDICTION_MODE mode,
212
                                      const int16_t mode_ctx) {
213
214
215
216
217
  assert(is_inter_compound_mode(mode));
  (void)cm;
  aom_write_symbol(w, INTER_COMPOUND_OFFSET(mode),
                   xd->tile_ctx->inter_compound_mode_cdf[mode_ctx],
                   INTER_COMPOUND_MODES);
218
}
219
220

#if CONFIG_COMPOUND_SINGLEREF
221
static void write_inter_singleref_comp_mode(MACROBLOCKD *xd, aom_writer *w,
222
223
224
                                            PREDICTION_MODE mode,
                                            const int16_t mode_ctx) {
  assert(is_inter_singleref_comp_mode(mode));
225
226
  aom_cdf_prob *const inter_singleref_comp_cdf =
      xd->tile_ctx->inter_singleref_comp_mode_cdf[mode_ctx];
227

228
229
  aom_write_symbol(w, INTER_SINGLEREF_COMP_OFFSET(mode),
                   inter_singleref_comp_cdf, INTER_SINGLEREF_COMP_MODES);
230
231
}
#endif  // CONFIG_COMPOUND_SINGLEREF
232

Yaowu Xu's avatar
Yaowu Xu committed
233
static void encode_unsigned_max(struct aom_write_bit_buffer *wb, int data,
234
                                int max) {
Yaowu Xu's avatar
Yaowu Xu committed
235
  aom_wb_write_literal(wb, data, get_unsigned_bits(max));
Jingning Han's avatar
Jingning Han committed
236
237
}

238
static void write_tx_size_vartx(const AV1_COMMON *cm, MACROBLOCKD *xd,
239
                                const MB_MODE_INFO *mbmi, TX_SIZE tx_size,
240
241
                                int depth, int blk_row, int blk_col,
                                aom_writer *w) {
242
243
244
245
#if CONFIG_NEW_MULTISYMBOL
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
#endif
246
247
  const int tx_row = blk_row >> 1;
  const int tx_col = blk_col >> 1;
248
249
250
  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);

251
252
  int ctx = txfm_partition_context(xd->above_txfm_context + blk_col,
                                   xd->left_txfm_context + blk_row,
253
                                   mbmi->sb_type, tx_size);
254

255
  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
256

Jingning Han's avatar
Jingning Han committed
257
  if (depth == MAX_VARTX_DEPTH) {
258
259
    txfm_partition_update(xd->above_txfm_context + blk_col,
                          xd->left_txfm_context + blk_row, tx_size, tx_size);
260
261
262
    return;
  }

263
264
265
  const int write_txfm_partition =
      tx_size == mbmi->inter_tx_size[tx_row][tx_col];
  if (write_txfm_partition) {
266
267
268
#if CONFIG_NEW_MULTISYMBOL
    aom_write_symbol(w, 0, ec_ctx->txfm_partition_cdf[ctx], 2);
#else
Yaowu Xu's avatar
Yaowu Xu committed
269
    aom_write(w, 0, cm->fc->txfm_partition_prob[ctx]);
270
271
#endif

272
273
    txfm_partition_update(xd->above_txfm_context + blk_col,
                          xd->left_txfm_context + blk_row, tx_size, tx_size);
Yue Chen's avatar
Yue Chen committed
274
    // TODO(yuec): set correct txfm partition update for qttx
275
  } else {
276
    const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
277
278
    const int bsw = tx_size_wide_unit[sub_txs];
    const int bsh = tx_size_high_unit[sub_txs];
279

280
281
282
#if CONFIG_NEW_MULTISYMBOL
    aom_write_symbol(w, 1, ec_ctx->txfm_partition_cdf[ctx], 2);
#else
Yaowu Xu's avatar
Yaowu Xu committed
283
    aom_write(w, 1, cm->fc->txfm_partition_prob[ctx]);
284
#endif
285

David Barker's avatar
David Barker committed
286
    if (sub_txs == TX_4X4) {
287
288
      txfm_partition_update(xd->above_txfm_context + blk_col,
                            xd->left_txfm_context + blk_row, sub_txs, tx_size);
289
      return;
290
    }
291

292
293
294
295
296
297
298
299
    assert(bsw > 0 && bsh > 0);
    for (int row = 0; row < tx_size_high_unit[tx_size]; row += bsh)
      for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) {
        int offsetr = blk_row + row;
        int offsetc = blk_col + col;
        write_tx_size_vartx(cm, xd, mbmi, sub_txs, depth + 1, offsetr, offsetc,
                            w);
      }
300
301
  }
}
302

303
#if !CONFIG_NEW_MULTISYMBOL
Yaowu Xu's avatar
Yaowu Xu committed
304
static void update_txfm_partition_probs(AV1_COMMON *cm, aom_writer *w,
305
                                        FRAME_COUNTS *counts, int probwt) {
306
307
  int k;
  for (k = 0; k < TXFM_PARTITION_CONTEXTS; ++k)
Yaowu Xu's avatar
Yaowu Xu committed
308
    av1_cond_prob_diff_update(w, &cm->fc->txfm_partition_prob[k],
309
                              counts->txfm_partition[k], probwt);
310
}
311
#endif  // CONFIG_NEW_MULTISYMBOL
312

Yaowu Xu's avatar
Yaowu Xu committed
313
314
static void write_selected_tx_size(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                                   aom_writer *w) {
315
316
  const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  const BLOCK_SIZE bsize = mbmi->sb_type;
317
318
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
319
  if (block_signals_txsize(bsize)) {
320
    const TX_SIZE tx_size = mbmi->tx_size;
321
    const int tx_size_ctx = get_tx_size_context(xd);
322
    const int32_t tx_size_cat = intra_tx_size_cat_lookup[bsize];
323
    const TX_SIZE coded_tx_size = txsize_sqr_up_map[tx_size];
324
325
326
327
328
329
330
    const int depth = tx_size_to_depth(coded_tx_size, tx_size_cat);
    const int max_depths = tx_size_cat_to_max_depth(tx_size_cat);

    assert(coded_tx_size <= tx_size_cat + 1);
    assert(depth >= 0 && depth <= max_depths);

    assert(!is_inter_block(mbmi));
331
    assert(IMPLIES(is_rect_tx(tx_size), is_rect_tx_allowed(xd, mbmi)));
332

333
    aom_write_symbol(w, depth, ec_ctx->tx_size_cdf[tx_size_cat][tx_size_ctx],
334
                     max_depths + 1);
Jingning Han's avatar
Jingning Han committed
335
336
337
  }
}

338
#if !CONFIG_NEW_MULTISYMBOL
Yaowu Xu's avatar
Yaowu Xu committed
339
static void update_inter_mode_probs(AV1_COMMON *cm, aom_writer *w,
340
341
                                    FRAME_COUNTS *counts) {
  int i;
342
  const int probwt = cm->num_tg;
343
  for (i = 0; i < NEWMV_MODE_CONTEXTS; ++i)
344
345
    av1_cond_prob_diff_update(w, &cm->fc->newmv_prob[i], counts->newmv_mode[i],
                              probwt);
Sarah Parker's avatar
Sarah Parker committed
346
  for (i = 0; i < GLOBALMV_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
347
    av1_cond_prob_diff_update(w, &cm->fc->zeromv_prob[i],
348
                              counts->zeromv_mode[i], probwt);
349
  for (i = 0; i < REFMV_MODE_CONTEXTS; ++i)
350
351
    av1_cond_prob_diff_update(w, &cm->fc->refmv_prob[i], counts->refmv_mode[i],
                              probwt);
352
  for (i = 0; i < DRL_MODE_CONTEXTS; ++i)
353
354
    av1_cond_prob_diff_update(w, &cm->fc->drl_prob[i], counts->drl_mode[i],
                              probwt);
355
}
356
#endif
357

Yaowu Xu's avatar
Yaowu Xu committed
358
359
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
360
361
362
363
  if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP)) {
    return 1;
  } else {
    const int skip = mi->mbmi.skip;
Zoe Liu's avatar
Zoe Liu committed
364
    const int ctx = av1_get_skip_context(xd);
365
366
367
368
#if CONFIG_NEW_MULTISYMBOL
    FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
    aom_write_symbol(w, skip, ec_ctx->skip_cdfs[ctx], 2);
#else
Zoe Liu's avatar
Zoe Liu committed
369
    aom_write(w, skip, cm->fc->skip_probs[ctx]);
370
#endif
Jingning Han's avatar
Jingning Han committed
371
372
373
374
    return skip;
  }
}

375
376
377
static void write_is_inter(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                           int segment_id, aom_writer *w, const int is_inter) {
  if (!segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME)) {
378
    const int ctx = av1_get_intra_inter_context(xd);
379
380
381
382
#if CONFIG_NEW_MULTISYMBOL
    FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
    aom_write_symbol(w, is_inter, ec_ctx->intra_inter_cdf[ctx], 2);
#else
383
    aom_write(w, is_inter, cm->fc->intra_inter_prob[ctx]);
384
385
386
387
#endif
  }
}

388
389
static void write_motion_mode(const AV1_COMMON *cm, MACROBLOCKD *xd,
                              const MODE_INFO *mi, aom_writer *w) {
390
  const MB_MODE_INFO *mbmi = &mi->mbmi;
391

392
  MOTION_MODE last_motion_mode_allowed =
393
      motion_mode_allowed(0, cm->global_motion, xd, mi);
394
395
396
  switch (last_motion_mode_allowed) {
    case SIMPLE_TRANSLATION: break;
    case OBMC_CAUSAL:
397
#if CONFIG_NEW_MULTISYMBOL
398
399
      aom_write_symbol(w, mbmi->motion_mode == OBMC_CAUSAL,
                       xd->tile_ctx->obmc_cdf[mbmi->sb_type], 2);
400
#else
401
402
      aom_write(w, mbmi->motion_mode == OBMC_CAUSAL,
                cm->fc->obmc_prob[mbmi->sb_type]);
403
#endif
404
405
406
407
408
      break;
    default:
      aom_write_symbol(w, mbmi->motion_mode,
                       xd->tile_ctx->motion_mode_cdf[mbmi->sb_type],
                       MOTION_MODES);
Yue Chen's avatar
Yue Chen committed
409
410
  }
}
411

Thomas Davies's avatar
Thomas Davies committed
412
413
static void write_delta_qindex(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                               int delta_qindex, aom_writer *w) {
414
415
  int sign = delta_qindex < 0;
  int abs = sign ? -delta_qindex : delta_qindex;
Thomas Davies's avatar
Thomas Davies committed
416
  int rem_bits, thr;
417
  int smallval = abs < DELTA_Q_SMALL ? 1 : 0;
Thomas Davies's avatar
Thomas Davies committed
418
419
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;
420

Thomas Davies's avatar
Thomas Davies committed
421
422
  aom_write_symbol(w, AOMMIN(abs, DELTA_Q_SMALL), ec_ctx->delta_q_cdf,
                   DELTA_Q_PROBS + 1);
423
424
425
426

  if (!smallval) {
    rem_bits = OD_ILOG_NZ(abs - 1) - 1;
    thr = (1 << rem_bits) + 1;
427
    aom_write_literal(w, rem_bits - 1, 3);
428
    aom_write_literal(w, abs - thr, rem_bits);
429
430
431
432
433
  }
  if (abs > 0) {
    aom_write_bit(w, sign);
  }
}
434

Fangwen Fu's avatar
Fangwen Fu committed
435
436
#if CONFIG_EXT_DELTA_Q
static void write_delta_lflevel(const AV1_COMMON *cm, const MACROBLOCKD *xd,
437
438
439
#if CONFIG_LOOPFILTER_LEVEL
                                int lf_id,
#endif
Fangwen Fu's avatar
Fangwen Fu committed
440
441
442
443
444
445
446
447
                                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;
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  (void)cm;

448
#if CONFIG_LOOPFILTER_LEVEL
449
450
451
452
453
454
455
456
  if (cm->delta_lf_multi) {
    assert(lf_id >= 0 && lf_id < FRAME_LF_COUNT);
    aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL),
                     ec_ctx->delta_lf_multi_cdf[lf_id], DELTA_LF_PROBS + 1);
  } else {
    aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL), ec_ctx->delta_lf_cdf,
                     DELTA_LF_PROBS + 1);
  }
457
#else
Fangwen Fu's avatar
Fangwen Fu committed
458
459
  aom_write_symbol(w, AOMMIN(abs, DELTA_LF_SMALL), ec_ctx->delta_lf_cdf,
                   DELTA_LF_PROBS + 1);
460
#endif  // CONFIG_LOOPFILTER_LEVEL
Fangwen Fu's avatar
Fangwen Fu committed
461
462
463
464

  if (!smallval) {
    rem_bits = OD_ILOG_NZ(abs - 1) - 1;
    thr = (1 << rem_bits) + 1;
465
    aom_write_literal(w, rem_bits - 1, 3);
Fangwen Fu's avatar
Fangwen Fu committed
466
467
468
469
470
471
472
    aom_write_literal(w, abs - thr, rem_bits);
  }
  if (abs > 0) {
    aom_write_bit(w, sign);
  }
}
#endif  // CONFIG_EXT_DELTA_Q
473

474
#if !CONFIG_NEW_MULTISYMBOL
Yaowu Xu's avatar
Yaowu Xu committed
475
static void update_skip_probs(AV1_COMMON *cm, aom_writer *w,
Jingning Han's avatar
Jingning Han committed
476
477
                              FRAME_COUNTS *counts) {
  int k;
478
479
480
481
482
  const int probwt = cm->num_tg;
  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
483
}
484
#endif
Jingning Han's avatar
Jingning Han committed
485

Sarah Parker's avatar
Sarah Parker committed
486
487
static void pack_map_tokens(aom_writer *w, const TOKENEXTRA **tp, int n,
                            int num) {
488
  const TOKENEXTRA *p = *tp;
489
490
491
492
  write_uniform(w, n, p->token);  // The first color index.
  ++p;
  --num;
  for (int i = 0; i < num; ++i) {
493
    aom_write_symbol(w, p->token, p->color_map_cdf, n);
hui su's avatar
hui su committed
494
495
496
497
    ++p;
  }
  *tp = p;
}
498

499
#if !CONFIG_LV_MAP
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
#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);
  }
}
526
#endif  // CONFIG_NEW_MULTISYMBOL
527

Yaowu Xu's avatar
Yaowu Xu committed
528
static void pack_mb_tokens(aom_writer *w, const TOKENEXTRA **tp,
529
                           const TOKENEXTRA *const stop,
530
                           aom_bit_depth_t bit_depth, const TX_SIZE tx_size,
Sarah Parker's avatar
Sarah Parker committed
531
532
533
#if CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
                           TX_TYPE tx_type, int is_inter,
#endif  // CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
534
                           TOKEN_STATS *token_stats) {
535
  const TOKENEXTRA *p = *tp;
536
  int count = 0;
537
  const int seg_eob = tx_size_2d[tx_size];
Jingning Han's avatar
Jingning Han committed
538

Sarah Parker's avatar
Sarah Parker committed
539
540
541
542
543
544
545
546
547
548
549
#if CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
  if (tx_type == MRC_DCT && ((is_inter && SIGNAL_MRC_MASK_INTER) ||
                             (!is_inter && SIGNAL_MRC_MASK_INTRA))) {
    int rows = tx_size_high[tx_size];
    int cols = tx_size_wide[tx_size];
    assert(tx_size == TX_32X32);
    assert(p < stop);
    pack_map_tokens(w, &p, 2, rows * cols);
  }
#endif  // CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK

Jingning Han's avatar
Jingning Han committed
550
  while (p < stop && p->token != EOSB_TOKEN) {
551
    const int token = p->token;
Yaowu Xu's avatar
Yaowu Xu committed
552
    const int8_t eob_val = p->eob_val;
553
    if (token == BLOCK_Z_TOKEN) {
554
      aom_write_symbol(w, 0, *p->head_cdf, HEAD_TOKENS + 1);
555
      p++;
556
      break;
557
558
      continue;
    }
Yaowu Xu's avatar
Yaowu Xu committed
559
560

    const av1_extra_bit *const extra_bits = &av1_extra_bits[token];
561
    if (eob_val == LAST_EOB) {
562
563
564
      // Just code a flag indicating whether the value is >1 or 1.
      aom_write_bit(w, token != ONE_TOKEN);
    } else {
565
      int comb_symb = 2 * AOMMIN(token, TWO_TOKEN) - eob_val + p->first_val;
566
      aom_write_symbol(w, comb_symb, *p->head_cdf, HEAD_TOKENS + p->first_val);
567
    }
568
    if (token > ONE_TOKEN) {
569
      aom_write_symbol(w, token - TWO_TOKEN, *p->tail_cdf, TAIL_TOKENS);
Alex Converse's avatar
Alex Converse committed
570
    }
571
572
573
574

    if (extra_bits->base_val) {
      const int bit_string = p->extra;
      const int bit_string_length = extra_bits->len;  // Length of extra bits to
575
      const int is_cat6 = (extra_bits->base_val == CAT6_MIN_VAL);
576
577
      // be written excluding
      // the sign bit.
578
      int skip_bits = is_cat6
579
580
581
                          ? (int)sizeof(av1_cat6_prob) -
                                av1_get_cat6_extrabits_size(tx_size, bit_depth)
                          : 0;
582

583
584
585
586
587
588
589
590
591
      assert(!(bit_string >> (bit_string_length - skip_bits + 1)));
      if (bit_string_length > 0)
#if CONFIG_NEW_MULTISYMBOL
        write_coeff_extra(extra_bits->cdf, bit_string >> 1,
                          bit_string_length - skip_bits, w);
#else
        write_coeff_extra(extra_bits->prob, bit_string >> 1, bit_string_length,
                          skip_bits, w, token_stats);
#endif
592
593
594
595
596
597

      aom_write_bit_record(w, bit_string & 1, token_stats);
    }
    ++p;

    ++count;
598
    if (eob_val == EARLY_EOB || count == seg_eob) break;
599
600
601
602
  }

  *tp = p;
}
Angie Chiang's avatar
Angie Chiang committed
603
#endif  // !CONFIG_LV_MAP
604

605
#if CONFIG_LV_MAP
606
static void pack_txb_tokens(aom_writer *w, AV1_COMMON *cm, MACROBLOCK *const x,
607
                            const TOKENEXTRA **tp,
608
609
                            const TOKENEXTRA *const tok_end, MACROBLOCKD *xd,
                            MB_MODE_INFO *mbmi, int plane,
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
                            BLOCK_SIZE plane_bsize, aom_bit_depth_t bit_depth,
                            int block, int blk_row, int blk_col,
                            TX_SIZE tx_size, TOKEN_STATS *token_stats) {
  const struct macroblockd_plane *const pd = &xd->plane[plane];
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
  const int tx_row = blk_row >> (1 - pd->subsampling_y);
  const int tx_col = blk_col >> (1 - pd->subsampling_x);
  TX_SIZE plane_tx_size;
  const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
  const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);

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

  plane_tx_size =
      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
            : mbmi->inter_tx_size[tx_row][tx_col];

  if (tx_size == plane_tx_size) {
    TOKEN_STATS tmp_token_stats;
    init_token_stats(&tmp_token_stats);

    tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block);
    uint16_t eob = x->mbmi_ext->eobs[plane][block];
    TXB_CTX txb_ctx = { x->mbmi_ext->txb_skip_ctx[plane][block],
                        x->mbmi_ext->dc_sign_ctx[plane][block] };
Jingning Han's avatar
Jingning Han committed
635
636
    av1_write_coeffs_txb(cm, xd, w, blk_row, blk_col, block, plane, tx_size,
                         tcoeff, eob, &txb_ctx);
637
638
639
640
641
642
#if CONFIG_RD_DEBUG
    token_stats->txb_coeff_cost_map[blk_row][blk_col] = tmp_token_stats.cost;
    token_stats->cost += tmp_token_stats.cost;
#endif
  } else {
    const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
643
644
    const int bsw = tx_size_wide_unit[sub_txs];
    const int bsh = tx_size_high_unit[sub_txs];
645

646
    assert(bsw > 0 && bsh > 0);
647

648
649
650
651
652
    for (int r = 0; r < tx_size_high_unit[tx_size]; r += bsh) {
      for (int c = 0; c < tx_size_wide_unit[tx_size]; c += bsw) {
        const int offsetr = blk_row + r;
        const int offsetc = blk_col + c;
        const int step = bsh * bsw;
653

654
        if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;
655

656
657
658
659
660
        pack_txb_tokens(w, cm, x, tp, tok_end, xd, mbmi, plane, plane_bsize,
                        bit_depth, block, offsetr, offsetc, sub_txs,
                        token_stats);
        block += step;
      }
661
662
663
664
    }
  }
}
#else  // CONFIG_LV_MAP
Yaowu Xu's avatar
Yaowu Xu committed
665
static void pack_txb_tokens(aom_writer *w, const TOKENEXTRA **tp,
Yushin Cho's avatar
Yushin Cho committed
666
667
                            const TOKENEXTRA *const tok_end, MACROBLOCKD *xd,
                            MB_MODE_INFO *mbmi, int plane,
Yaowu Xu's avatar
Yaowu Xu committed
668
                            BLOCK_SIZE plane_bsize, aom_bit_depth_t bit_depth,
669
                            int block, int blk_row, int blk_col,
670
                            TX_SIZE tx_size, TOKEN_STATS *token_stats) {
671
672
  const struct macroblockd_plane *const pd = &xd->plane[plane];
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
673
674
  const int tx_row = blk_row >> (1 - pd->subsampling_y);
  const int tx_col = blk_col >> (1 - pd->subsampling_x);
Debargha Mukherjee's avatar
Debargha Mukherjee committed
675
  TX_SIZE plane_tx_size;
676
677
  const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
  const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
Sarah Parker's avatar
Sarah Parker committed
678
679
680
681
#if CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
  TX_TYPE tx_type = av1_get_tx_type(plane ? PLANE_TYPE_UV : PLANE_TYPE_Y, xd,
                                    blk_row, blk_col, block, tx_size);
#endif  // CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
682

683
  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
684

685
686
687
  plane_tx_size =
      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
            : mbmi->inter_tx_size[tx_row][tx_col];
Debargha Mukherjee's avatar
Debargha Mukherjee committed
688

689
  if (tx_size == plane_tx_size) {
690
691
    TOKEN_STATS tmp_token_stats;
    init_token_stats(&tmp_token_stats);
Sarah Parker's avatar
Sarah Parker committed
692
693
694
695
696
    pack_mb_tokens(w, tp, tok_end, bit_depth, tx_size,
#if CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
                   tx_type, is_inter_block(mbmi),
#endif  // CONFIG_MRC_TX && SIGNAL_ANY_MRC_MASK
                   &tmp_token_stats);
697
698
699
700
#if CONFIG_RD_DEBUG
    token_stats->txb_coeff_cost_map[blk_row][blk_col] = tmp_token_stats.cost;
    token_stats->cost += tmp_token_stats.cost;
#endif
701
  } else {
702
    const TX_SIZE sub_txs = sub_tx_size_map[tx_size];
703
704
    const int bsw = tx_size_wide_unit[sub_txs];
    const int bsh = tx_size_high_unit[sub_txs];
705

706
    assert(bsw > 0 && bsh > 0);
707

708
709
710
711
712
    for (int r = 0; r < tx_size_high_unit[tx_size]; r += bsh) {
      for (int c = 0; c < tx_size_wide_unit[tx_size]; c += bsw) {
        const int offsetr = blk_row + r;
        const int offsetc = blk_col + c;
        const int step = bsh * bsw;
713

714
        if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;
715

716
717
718
719
        pack_txb_tokens(w, tp, tok_end, xd, mbmi, plane, plane_bsize, bit_depth,
                        block, offsetr, offsetc, sub_txs, token_stats);
        block += step;
      }
720
721
722
    }
  }
}
723
#endif  // CONFIG_LV_MAP
724

725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
#if CONFIG_Q_SEGMENTATION
static int neg_interleave(int x, int ref, int max) {
  const int diff = x - ref;
  if (!ref) return x;
  if (ref >= (max - 1)) return -diff;
  if (2 * ref < max) {
    if (abs(diff) <= ref) {
      if (diff > 0)
        return (diff << 1) - 1;
      else
        return ((-diff) << 1);
    }
    return x;
  } else {
    if (abs(diff) < (max - ref)) {
      if (diff > 0)
        return (diff << 1) - 1;
      else
        return ((-diff) << 1);
    }
    return (max - x) - 1;
  }
}

static void write_q_segment_id(const AV1_COMMON *cm, int skip,
                               const MB_MODE_INFO *const mbmi, aom_writer *w,
                               const struct segmentation *seg,
                               struct segmentation_probs *segp,
                               BLOCK_SIZE bsize, int mi_row, int mi_col) {
  int prev_ul = 0; /* Top left segment_id */
  int prev_l = 0;  /* Current left segment_id */
  int prev_u = 0;  /* Current top segment_id */

  if (!seg->q_lvls) return;

  MODE_INFO *const mi = cm->mi + mi_row * cm->mi_stride + mi_col;
  int tinfo = mi->mbmi.boundary_info;
  int above = (!(tinfo & TILE_ABOVE_BOUNDARY)) && ((mi_row - 1) >= 0);
  int left = (!(tinfo & TILE_LEFT_BOUNDARY)) && ((mi_col - 1) >= 0);

  if (above && left)
    prev_ul =
        get_segment_id(cm, cm->q_seg_map, BLOCK_4X4, mi_row - 1, mi_col - 1);

  if (above)
    prev_u = get_segment_id(cm, cm->q_seg_map, BLOCK_4X4, mi_row - 1, mi_col);

  if (left)
    prev_l = get_segment_id(cm, cm->q_seg_map, BLOCK_4X4, mi_row, mi_col - 1);

  int cdf_num = pick_q_seg_cdf(prev_ul, prev_u, prev_l);
  int pred = pick_q_seg_pred(prev_ul, prev_u, prev_l);

  if (skip) {
    set_q_segment_id(cm, cm->q_seg_map, mbmi->sb_type, mi_row, mi_col, pred);
    return;
  }

  int coded_id = neg_interleave(mbmi->q_segment_id, pred, seg->q_lvls);

#if CONFIG_NEW_MULTISYMBOL
  aom_cdf_prob *pred_cdf = segp->q_seg_cdf[cdf_num];
  aom_write_symbol(w, coded_id, pred_cdf, 8);
#else
  aom_prob pred_cdf = segp->q_seg_cdf[cdf_num];
  aom_write(w, coded_id, pred_prob);
#endif

  set_q_segment_id(cm, cm->q_seg_map, bsize, mi_row, mi_col,
                   mbmi->q_segment_id);
}
#endif

Yaowu Xu's avatar
Yaowu Xu committed
798
static void write_segment_id(aom_writer *w, const struct segmentation *seg,
799
                             struct segmentation_probs *segp, int segment_id) {
800
801
802
  if (seg->enabled && seg->update_map) {
    aom_write_symbol(w, segment_id, segp->tree_cdf, MAX_SEGMENTS);
  }
Jingning Han's avatar
Jingning Han committed
803
804
}

805
806
#if CONFIG_NEW_MULTISYMBOL
#define WRITE_REF_BIT(bname, pname) \
807
  aom_write_symbol(w, bname, av1_get_pred_cdf_##pname(cm, xd), 2)
808
809
#define WRITE_REF_BIT2(bname, pname) \
  aom_write_symbol(w, bname, av1_get_pred_cdf_##pname(xd), 2)
810
811
812
#else
#define WRITE_REF_BIT(bname, pname) \
  aom_write(w, bname, av1_get_pred_prob_##pname(cm, xd))
813
814
#define WRITE_REF_BIT2(bname, pname) \
  aom_write(w, bname, av1_get_pred_prob_##pname(cm, xd))
815
816
#endif

Jingning Han's avatar
Jingning Han committed
817
// This function encodes the reference frame
Yaowu Xu's avatar
Yaowu Xu committed
818
819
static void write_ref_frames(const AV1_COMMON *cm, const MACROBLOCKD *xd,
                             aom_writer *w) {
Jingning Han's avatar
Jingning Han committed
820
821
822
823
824
825
826
827
828
  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] ==
829
           get_segdata(&cm->seg, segment_id, SEG_LVL_REF_FRAME));
830
  }
Sarah Parker's avatar
Sarah Parker committed
831
#if CONFIG_SEGMENT_GLOBALMV
832
  else if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP) ||
Sarah Parker's avatar
Sarah Parker committed
833
           segfeature_active(&cm->seg, segment_id, SEG_LVL_GLOBALMV))
834
835
836
837
838
839
#else
  else if (segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP))
#endif
  {
    assert(!is_compound);
    assert(mbmi->ref_frame[0] == LAST_FRAME);
Jingning Han's avatar
Jingning Han committed
840
841
842
843
  } else {
    // does the feature use compound prediction or not
    // (if not specified at the frame/segment level)
    if (cm->reference_mode == REFERENCE_MODE_SELECT) {
844
      if (is_comp_ref_allowed(mbmi->sb_type))
845
846
847
#if CONFIG_NEW_MULTISYMBOL
        aom_write_symbol(w, is_compound, av1_get_reference_mode_cdf(cm, xd), 2);
#else
848
849
        aom_write(w, is_compound, av1_get_reference_mode_prob(cm, xd));
#endif  // CONFIG_NEW_MULTISYMBOL
Jingning Han's avatar
Jingning Han committed
850
    } else {
851
      assert((!is_compound) == (cm->reference_mode == SINGLE_REFERENCE));
Jingning Han's avatar
Jingning Han committed
852
853
854
    }

    if (is_compound) {
Zoe Liu's avatar
Zoe Liu committed
855
856
857
858
#if CONFIG_EXT_COMP_REFS
      const COMP_REFERENCE_TYPE comp_ref_type = has_uni_comp_refs(mbmi)
                                                    ? UNIDIR_COMP_REFERENCE
                                                    : BIDIR_COMP_REFERENCE;
859
#if CONFIG_NEW_MULTISYMBOL
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
860
861
      aom_write_symbol(w, comp_ref_type, av1_get_comp_reference_type_cdf(xd),
                       2);
862
863
864
#else
      aom_write(w, comp_ref_type, av1_get_comp_reference_type_prob(cm, xd));
#endif
Zoe Liu's avatar
Zoe Liu committed
865
866
867

      if (comp_ref_type == UNIDIR_COMP_REFERENCE) {
        const int bit = mbmi->ref_frame[0] == BWDREF_FRAME;
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
868
        WRITE_REF_BIT2(bit, uni_comp_ref_p);
869

Zoe Liu's avatar
Zoe Liu committed
870
        if (!bit) {
871
          assert(mbmi->ref_frame[0] == LAST_FRAME);
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
872
873
874
875
876
877
          const int bit1 = mbmi->ref_frame[1] == LAST3_FRAME ||
                           mbmi->ref_frame[1] == GOLDEN_FRAME;
          WRITE_REF_BIT2(bit1, uni_comp_ref_p1);
          if (bit1) {
            const int bit2 = mbmi->ref_frame[1] == GOLDEN_FRAME;
            WRITE_REF_BIT2(bit2, uni_comp_ref_p2);
878
879
880
          }
        } else {
          assert(mbmi->ref_frame[1] == ALTREF_FRAME);
Zoe Liu's avatar
Zoe Liu committed
881
882
883
884
        }

        return;
      }
885
886

      assert(comp_ref_type == BIDIR_COMP_REFERENCE);
Zoe Liu's avatar
Zoe Liu committed
887
888
#endif  // CONFIG_EXT_COMP_REFS

889
      const int bit = (mbmi->ref_frame[0] == GOLDEN_FRAME ||
890
                       mbmi->ref_frame[0] == LAST3_FRAME);
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
891
      WRITE_REF_BIT(bit, comp_ref_p);
892
893

      if (!bit) {
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
894
895
        const int bit1 = mbmi->ref_frame[0] == LAST_FRAME;
        WRITE_REF_BIT(bit1, comp_ref_p1);
896
      } else {
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
897
898
        const int bit2 = mbmi->ref_frame[0] == GOLDEN_FRAME;
        WRITE_REF_BIT(bit2, comp_ref_p2);
899
900
      }

Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
901
902
903
904
905
      const int bit_bwd = mbmi->ref_frame[1] == ALTREF_FRAME;
      WRITE_REF_BIT(bit_bwd, comp_bwdref_p);

      if (!bit_bwd) {
        WRITE_REF_BIT(mbmi->ref_frame[1] == ALTREF2_FRAME, comp_bwdref_p1);
Zoe Liu's avatar
Zoe Liu committed
906
907
      }

Jingning Han's avatar
Jingning Han committed
908
    } else {
Zoe Liu's avatar
Zoe Liu committed
909
910
      const int bit0 = (mbmi->ref_frame[0] <= ALTREF_FRAME &&
                        mbmi->ref_frame[0] >= BWDREF_FRAME);
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
911
      WRITE_REF_BIT(bit0, single_ref_p1);
912
913

      if (bit0) {
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
914
915
916
917
918
        const int bit1 = mbmi->ref_frame[0] == ALTREF_FRAME;
        WRITE_REF_BIT(bit1, single_ref_p2);

        if (!bit1) {
          WRITE_REF_BIT(mbmi->ref_frame[0] == ALTREF2_FRAME, single_ref_p6);
Zoe Liu's avatar
Zoe Liu committed
919
        }
920
921
      } else {
        const int bit2 = (mbmi->ref_frame[0] == LAST3_FRAME ||
922
                          mbmi->ref_frame[0] == GOLDEN_FRAME);
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
923
        WRITE_REF_BIT(bit2, single_ref_p3);
924
925

        if (!bit2) {
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
926
927
          const int bit3 = mbmi->ref_frame[0] != LAST_FRAME;
          WRITE_REF_BIT(bit3, single_ref_p4);
928
        } else {
Sebastien Alaiwan's avatar
Sebastien Alaiwan committed
929
930
          const int bit4 = mbmi->ref_frame[0] != LAST3_FRAME;
          WRITE_REF_BIT(bit4, single_ref_p5);
931
932
        }
      }
Jingning Han's avatar
Jingning Han committed
933
934
935
936
    }
  }
}

937
#if CONFIG_FILTER_INTRA
938
static void write_filter_intra_mode_info(const MACROBLOCKD *xd,
939
940
                                         const MB_MODE_INFO *const mbmi,
                                         aom_writer *w) {
941
942
  if (mbmi->mode == DC_PRED && mbmi->palette_mode_info.palette_size[0] == 0 &&