decodeframe.c 151 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
14
 */

#include <assert.h>
#include <stdlib.h>  // qsort()

Yaowu Xu's avatar
Yaowu Xu committed
15
16
17
#include "./aom_config.h"
#include "./aom_dsp_rtcd.h"
#include "./aom_scale_rtcd.h"
Jingning Han's avatar
Jingning Han committed
18
#include "./av1_rtcd.h"
Jingning Han's avatar
Jingning Han committed
19

Yaowu Xu's avatar
Yaowu Xu committed
20
#include "aom_dsp/aom_dsp_common.h"
Jingning Han's avatar
Jingning Han committed
21
22
#include "aom_dsp/bitreader.h"
#include "aom_dsp/bitreader_buffer.h"
Yaowu Xu's avatar
Yaowu Xu committed
23
#include "aom_mem/aom_mem.h"
24
25
#include "aom_ports/mem.h"
#include "aom_ports/mem_ops.h"
Yaowu Xu's avatar
Yaowu Xu committed
26
27
#include "aom_scale/aom_scale.h"
#include "aom_util/aom_thread.h"
Jingning Han's avatar
Jingning Han committed
28

29
#include "av1/common/alloccommon.h"
30
#if CONFIG_CLPF
31
#include "av1/common/clpf.h"
32
#endif
33
#include "av1/common/common.h"
Yaowu Xu's avatar
Yaowu Xu committed
34
#if CONFIG_DERING
35
#include "av1/common/dering.h"
Yaowu Xu's avatar
Yaowu Xu committed
36
#endif  // CONFIG_DERING
37
38
39
40
41
42
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/idct.h"
#include "av1/common/pred_common.h"
#include "av1/common/quant_common.h"
#include "av1/common/reconinter.h"
Jingning Han's avatar
Jingning Han committed
43
#include "av1/common/reconintra.h"
44
#include "av1/common/seg_common.h"
Jingning Han's avatar
Jingning Han committed
45
#include "av1/common/thread_common.h"
46
#include "av1/common/tile_common.h"
47

48
49
50
#include "av1/decoder/decodeframe.h"
#include "av1/decoder/decodemv.h"
#include "av1/decoder/decoder.h"
Jingning Han's avatar
Jingning Han committed
51
#include "av1/decoder/detokenize.h"
52
#include "av1/decoder/dsubexp.h"
Jingning Han's avatar
Jingning Han committed
53

Yaowu Xu's avatar
Yaowu Xu committed
54
#define MAX_AV1_HEADER_SIZE 80
Jingning Han's avatar
Jingning Han committed
55

Yaowu Xu's avatar
Yaowu Xu committed
56
static int is_compound_reference_allowed(const AV1_COMMON *cm) {
Jingning Han's avatar
Jingning Han committed
57
  int i;
58
  if (frame_is_intra_only(cm)) return 0;
59
  for (i = 1; i < INTER_REFS_PER_FRAME; ++i)
60
    if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1]) return 1;
Jingning Han's avatar
Jingning Han committed
61
62
63
64

  return 0;
}

Yaowu Xu's avatar
Yaowu Xu committed
65
static void setup_compound_reference_mode(AV1_COMMON *cm) {
66
#if CONFIG_EXT_REFS
67
  cm->comp_fwd_ref[0] = LAST_FRAME;
68
69
70
71
  cm->comp_fwd_ref[1] = LAST2_FRAME;
  cm->comp_fwd_ref[2] = LAST3_FRAME;
  cm->comp_fwd_ref[3] = GOLDEN_FRAME;

72
73
  cm->comp_bwd_ref[0] = BWDREF_FRAME;
  cm->comp_bwd_ref[1] = ALTREF_FRAME;
74
#else
Jingning Han's avatar
Jingning Han committed
75
  if (cm->ref_frame_sign_bias[LAST_FRAME] ==
76
      cm->ref_frame_sign_bias[GOLDEN_FRAME]) {
Jingning Han's avatar
Jingning Han committed
77
78
79
80
    cm->comp_fixed_ref = ALTREF_FRAME;
    cm->comp_var_ref[0] = LAST_FRAME;
    cm->comp_var_ref[1] = GOLDEN_FRAME;
  } else if (cm->ref_frame_sign_bias[LAST_FRAME] ==
81
             cm->ref_frame_sign_bias[ALTREF_FRAME]) {
Jingning Han's avatar
Jingning Han committed
82
83
84
85
86
87
88
89
    cm->comp_fixed_ref = GOLDEN_FRAME;
    cm->comp_var_ref[0] = LAST_FRAME;
    cm->comp_var_ref[1] = ALTREF_FRAME;
  } else {
    cm->comp_fixed_ref = LAST_FRAME;
    cm->comp_var_ref[0] = GOLDEN_FRAME;
    cm->comp_var_ref[1] = ALTREF_FRAME;
  }
90
#endif  // CONFIG_EXT_REFS
Jingning Han's avatar
Jingning Han committed
91
92
93
94
95
96
}

static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
  return len != 0 && len <= (size_t)(end - start);
}

Yaowu Xu's avatar
Yaowu Xu committed
97
98
static int decode_unsigned_max(struct aom_read_bit_buffer *rb, int max) {
  const int data = aom_rb_read_literal(rb, get_unsigned_bits(max));
Jingning Han's avatar
Jingning Han committed
99
100
101
  return data > max ? max : data;
}

Yaowu Xu's avatar
Yaowu Xu committed
102
103
static TX_MODE read_tx_mode(struct aom_read_bit_buffer *rb) {
  return aom_rb_read_bit(rb) ? TX_MODE_SELECT : aom_rb_read_literal(rb, 2);
104
}
Jingning Han's avatar
Jingning Han committed
105

Yaowu Xu's avatar
Yaowu Xu committed
106
static void read_switchable_interp_probs(FRAME_CONTEXT *fc, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
107
108
109
  int i, j;
  for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j)
    for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
110
      av1_diff_update_prob(r, &fc->switchable_interp_prob[j][i]);
Jingning Han's avatar
Jingning Han committed
111
112
}

Yaowu Xu's avatar
Yaowu Xu committed
113
static void read_inter_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
114
115
116
  int i;
#if CONFIG_REF_MV
  for (i = 0; i < NEWMV_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
117
    av1_diff_update_prob(r, &fc->newmv_prob[i]);
118
  for (i = 0; i < ZEROMV_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
119
    av1_diff_update_prob(r, &fc->zeromv_prob[i]);
120
  for (i = 0; i < REFMV_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
121
    av1_diff_update_prob(r, &fc->refmv_prob[i]);
122
  for (i = 0; i < DRL_MODE_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
123
    av1_diff_update_prob(r, &fc->drl_prob[i]);
Yue Chen's avatar
Yue Chen committed
124
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
125
  av1_diff_update_prob(r, &fc->new2mv_prob);
Yue Chen's avatar
Yue Chen committed
126
#endif  // CONFIG_EXT_INTER
127
128
#else
  int j;
Jingning Han's avatar
Jingning Han committed
129
130
  for (i = 0; i < INTER_MODE_CONTEXTS; ++i)
    for (j = 0; j < INTER_MODES - 1; ++j)
Yaowu Xu's avatar
Yaowu Xu committed
131
      av1_diff_update_prob(r, &fc->inter_mode_probs[i][j]);
132
#endif
Jingning Han's avatar
Jingning Han committed
133
134
}

135
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
136
static void read_inter_compound_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
137
  int i, j;
Yaowu Xu's avatar
Yaowu Xu committed
138
  if (aom_read(r, GROUP_DIFF_UPDATE_PROB)) {
139
140
    for (j = 0; j < INTER_MODE_CONTEXTS; ++j) {
      for (i = 0; i < INTER_COMPOUND_MODES - 1; ++i) {
Yaowu Xu's avatar
Yaowu Xu committed
141
        av1_diff_update_prob(r, &fc->inter_compound_mode_probs[j][i]);
142
143
144
145
146
147
      }
    }
  }
}
#endif  // CONFIG_EXT_INTER

148
static REFERENCE_MODE read_frame_reference_mode(
Yaowu Xu's avatar
Yaowu Xu committed
149
    const AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
150
  if (is_compound_reference_allowed(cm)) {
Yaowu Xu's avatar
Yaowu Xu committed
151
    return aom_rb_read_bit(rb)
152
               ? REFERENCE_MODE_SELECT
Yaowu Xu's avatar
Yaowu Xu committed
153
               : (aom_rb_read_bit(rb) ? COMPOUND_REFERENCE : SINGLE_REFERENCE);
154
155
156
157
  } else {
    return SINGLE_REFERENCE;
  }
}
Jingning Han's avatar
Jingning Han committed
158

Yaowu Xu's avatar
Yaowu Xu committed
159
static void read_frame_reference_mode_probs(AV1_COMMON *cm, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
160
  FRAME_CONTEXT *const fc = cm->fc;
161
  int i, j;
Jingning Han's avatar
Jingning Han committed
162
163
164

  if (cm->reference_mode == REFERENCE_MODE_SELECT)
    for (i = 0; i < COMP_INTER_CONTEXTS; ++i)
Yaowu Xu's avatar
Yaowu Xu committed
165
      av1_diff_update_prob(r, &fc->comp_inter_prob[i]);
Jingning Han's avatar
Jingning Han committed
166

167
  if (cm->reference_mode != COMPOUND_REFERENCE) {
Jingning Han's avatar
Jingning Han committed
168
    for (i = 0; i < REF_CONTEXTS; ++i) {
169
      for (j = 0; j < (SINGLE_REFS - 1); ++j) {
Yaowu Xu's avatar
Yaowu Xu committed
170
        av1_diff_update_prob(r, &fc->single_ref_prob[i][j]);
171
      }
Jingning Han's avatar
Jingning Han committed
172
    }
173
  }
Jingning Han's avatar
Jingning Han committed
174

175
176
  if (cm->reference_mode != SINGLE_REFERENCE) {
    for (i = 0; i < REF_CONTEXTS; ++i) {
177
#if CONFIG_EXT_REFS
178
      for (j = 0; j < (FWD_REFS - 1); ++j)
Yaowu Xu's avatar
Yaowu Xu committed
179
        av1_diff_update_prob(r, &fc->comp_ref_prob[i][j]);
180
      for (j = 0; j < (BWD_REFS - 1); ++j)
Yaowu Xu's avatar
Yaowu Xu committed
181
        av1_diff_update_prob(r, &fc->comp_bwdref_prob[i][j]);
182
183
#else
      for (j = 0; j < (COMP_REFS - 1); ++j)
Yaowu Xu's avatar
Yaowu Xu committed
184
        av1_diff_update_prob(r, &fc->comp_ref_prob[i][j]);
185
#endif  // CONFIG_EXT_REFS
186
187
    }
  }
Jingning Han's avatar
Jingning Han committed
188
189
}

Yaowu Xu's avatar
Yaowu Xu committed
190
static void update_mv_probs(aom_prob *p, int n, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
191
  int i;
Yaowu Xu's avatar
Yaowu Xu committed
192
  for (i = 0; i < n; ++i) av1_diff_update_prob(r, &p[i]);
Jingning Han's avatar
Jingning Han committed
193
194
}

Yaowu Xu's avatar
Yaowu Xu committed
195
static void read_mv_probs(nmv_context *ctx, int allow_hp, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
  int i, j;

  update_mv_probs(ctx->joints, MV_JOINTS - 1, r);

  for (i = 0; i < 2; ++i) {
    nmv_component *const comp_ctx = &ctx->comps[i];
    update_mv_probs(&comp_ctx->sign, 1, r);
    update_mv_probs(comp_ctx->classes, MV_CLASSES - 1, r);
    update_mv_probs(comp_ctx->class0, CLASS0_SIZE - 1, r);
    update_mv_probs(comp_ctx->bits, MV_OFFSET_BITS, r);
  }

  for (i = 0; i < 2; ++i) {
    nmv_component *const comp_ctx = &ctx->comps[i];
    for (j = 0; j < CLASS0_SIZE; ++j)
      update_mv_probs(comp_ctx->class0_fp[j], MV_FP_SIZE - 1, r);
    update_mv_probs(comp_ctx->fp, 3, r);
  }

  if (allow_hp) {
    for (i = 0; i < 2; ++i) {
      nmv_component *const comp_ctx = &ctx->comps[i];
      update_mv_probs(&comp_ctx->class0_hp, 1, r);
      update_mv_probs(&comp_ctx->hp, 1, r);
    }
  }
}

224
static void inverse_transform_block(MACROBLOCKD *xd, int plane,
225
                                    const TX_TYPE tx_type,
226
227
                                    const TX_SIZE tx_size, uint8_t *dst,
                                    int stride, int eob) {
Jingning Han's avatar
Jingning Han committed
228
229
230
  struct macroblockd_plane *const pd = &xd->plane[plane];
  if (eob > 0) {
    tran_low_t *const dqcoeff = pd->dqcoeff;
Angie Chiang's avatar
Angie Chiang committed
231
232
233
234
    INV_TXFM_PARAM inv_txfm_param;
    inv_txfm_param.tx_type = tx_type;
    inv_txfm_param.tx_size = tx_size;
    inv_txfm_param.eob = eob;
235
    inv_txfm_param.lossless = xd->lossless[xd->mi[0]->mbmi.segment_id];
Angie Chiang's avatar
Angie Chiang committed
236

Yaowu Xu's avatar
Yaowu Xu committed
237
#if CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
238
    if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
Angie Chiang's avatar
Angie Chiang committed
239
240
      inv_txfm_param.bd = xd->bd;
      highbd_inv_txfm_add(dqcoeff, dst, stride, &inv_txfm_param);
Jingning Han's avatar
Jingning Han committed
241
    } else {
Yaowu Xu's avatar
Yaowu Xu committed
242
#endif  // CONFIG_AOM_HIGHBITDEPTH
Angie Chiang's avatar
Angie Chiang committed
243
      inv_txfm_add(dqcoeff, dst, stride, &inv_txfm_param);
Yaowu Xu's avatar
Yaowu Xu committed
244
#if CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
245
    }
Yaowu Xu's avatar
Yaowu Xu committed
246
#endif  // CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
247
248
249
250

    if (eob == 1) {
      dqcoeff[0] = 0;
    } else {
251
      if (tx_type == DCT_DCT && tx_size <= TX_16X16 && eob <= 10)
252
        memset(dqcoeff, 0, 4 * 4 * num_4x4_blocks_wide_txsize_lookup[tx_size] *
253
                               sizeof(dqcoeff[0]));
254
255
#if CONFIG_EXT_TX
      else
256
        memset(dqcoeff, 0, get_tx2d_size(tx_size) * sizeof(dqcoeff[0]));
257
#else
Jingning Han's avatar
Jingning Han committed
258
259
260
      else if (tx_size == TX_32X32 && eob <= 34)
        memset(dqcoeff, 0, 256 * sizeof(dqcoeff[0]));
      else
261
        memset(dqcoeff, 0, get_tx2d_size(tx_size) * sizeof(dqcoeff[0]));
262
#endif
Jingning Han's avatar
Jingning Han committed
263
264
265
266
267
    }
  }
}

static void predict_and_reconstruct_intra_block(MACROBLOCKD *const xd,
Alex Converse's avatar
Alex Converse committed
268
269
270
#if CONFIG_ANS
                                                struct AnsDecoder *const r,
#else
Yaowu Xu's avatar
Yaowu Xu committed
271
                                                aom_reader *r,
Alex Converse's avatar
Alex Converse committed
272
#endif  // CONFIG_ANS
Jingning Han's avatar
Jingning Han committed
273
                                                MB_MODE_INFO *const mbmi,
274
                                                int plane, int row, int col,
Jingning Han's avatar
Jingning Han committed
275
276
277
                                                TX_SIZE tx_size) {
  struct macroblockd_plane *const pd = &xd->plane[plane];
  PREDICTION_MODE mode = (plane == 0) ? mbmi->mode : mbmi->uv_mode;
hui su's avatar
hui su committed
278
  PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
Jingning Han's avatar
Jingning Han committed
279
  uint8_t *dst;
hui su's avatar
hui su committed
280
  int block_idx = (row << 1) + col;
Jingning Han's avatar
Jingning Han committed
281
282
283
  dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col];

  if (mbmi->sb_type < BLOCK_8X8)
284
    if (plane == 0) mode = xd->mi[0]->bmi[(row << 1) + col].as_mode;
Jingning Han's avatar
Jingning Han committed
285

Yaowu Xu's avatar
Yaowu Xu committed
286
287
  av1_predict_intra_block(xd, pd->n4_wl, pd->n4_hl, tx_size, mode, dst,
                          pd->dst.stride, dst, pd->dst.stride, col, row, plane);
Jingning Han's avatar
Jingning Han committed
288
289

  if (!mbmi->skip) {
hui su's avatar
hui su committed
290
    TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx, tx_size);
291
    const scan_order *sc = get_scan(tx_size, tx_type, 0);
Yaowu Xu's avatar
Yaowu Xu committed
292
293
    const int eob = av1_decode_block_tokens(xd, plane, sc, col, row, tx_size,
                                            tx_type, r, mbmi->segment_id);
294
295
    inverse_transform_block(xd, plane, tx_type, tx_size, dst, pd->dst.stride,
                            eob);
Jingning Han's avatar
Jingning Han committed
296
297
298
  }
}

299
#if CONFIG_VAR_TX
Yaowu Xu's avatar
Yaowu Xu committed
300
static void decode_reconstruct_tx(MACROBLOCKD *const xd, aom_reader *r,
301
302
303
304
                                  MB_MODE_INFO *const mbmi, int plane,
                                  BLOCK_SIZE plane_bsize, int block,
                                  int blk_row, int blk_col, TX_SIZE tx_size,
                                  int *eob_total) {
305
  const struct macroblockd_plane *const pd = &xd->plane[plane];
306
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
307
308
  const int tx_row = blk_row >> (1 - pd->subsampling_y);
  const int tx_col = blk_col >> (1 - pd->subsampling_x);
309
  const TX_SIZE plane_tx_size =
310
      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
311
            : mbmi->inter_tx_size[tx_row][tx_col];
312
313
314
315
316
317
318
319
  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);

320
  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
321

322
  if (tx_size == plane_tx_size) {
323
    PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
324
325
    TX_TYPE tx_type = get_tx_type(plane_type, xd, block, plane_tx_size);
    const scan_order *sc = get_scan(plane_tx_size, tx_type, 1);
326
    const int eob =
Yaowu Xu's avatar
Yaowu Xu committed
327
328
        av1_decode_block_tokens(xd, plane, sc, blk_col, blk_row, plane_tx_size,
                                tx_type, r, mbmi->segment_id);
329
330
    inverse_transform_block(
        xd, plane, tx_type, plane_tx_size,
331
        &pd->dst.buf[4 * blk_row * pd->dst.stride + 4 * blk_col],
332
        pd->dst.stride, eob);
333
334
335
336
337
338
339
340
341
342
343
    *eob_total += eob;
  } 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);
344
      int step = num_4x4_blocks_txsize_lookup[tx_size - 1];
345

346
      if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;
347
348
349
350
351
352

      decode_reconstruct_tx(xd, r, mbmi, plane, plane_bsize, block + i * step,
                            offsetr, offsetc, tx_size - 1, eob_total);
    }
  }
}
353
#endif  // CONFIG_VAR_TX
354

355
#if !CONFIG_VAR_TX || CONFIG_SUPERTX || (CONFIG_EXT_TX && CONFIG_RECT_TX)
Alex Converse's avatar
Alex Converse committed
356
357
358
359
static int reconstruct_inter_block(MACROBLOCKD *const xd,
#if CONFIG_ANS
                                   struct AnsDecoder *const r,
#else
Yaowu Xu's avatar
Yaowu Xu committed
360
                                   aom_reader *r,
Alex Converse's avatar
Alex Converse committed
361
#endif
362
363
                                   int segment_id, int plane, int row, int col,
                                   TX_SIZE tx_size) {
Jingning Han's avatar
Jingning Han committed
364
  struct macroblockd_plane *const pd = &xd->plane[plane];
hui su's avatar
hui su committed
365
366
  PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
  int block_idx = (row << 1) + col;
hui su's avatar
hui su committed
367
  TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx, tx_size);
368
  const scan_order *sc = get_scan(tx_size, tx_type, 1);
Yaowu Xu's avatar
Yaowu Xu committed
369
370
  const int eob = av1_decode_block_tokens(xd, plane, sc, col, row, tx_size,
                                          tx_type, r, segment_id);
Jingning Han's avatar
Jingning Han committed
371

372
373
374
  inverse_transform_block(xd, plane, tx_type, tx_size,
                          &pd->dst.buf[4 * row * pd->dst.stride + 4 * col],
                          pd->dst.stride, eob);
Jingning Han's avatar
Jingning Han committed
375
376
  return eob;
}
377
#endif  // !CONFIG_VAR_TX || CONFIG_SUPER_TX
Jingning Han's avatar
Jingning Han committed
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398

static INLINE void dec_reset_skip_context(MACROBLOCKD *xd) {
  int i;
  for (i = 0; i < MAX_MB_PLANE; i++) {
    struct macroblockd_plane *const pd = &xd->plane[i];
    memset(pd->above_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_w);
    memset(pd->left_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_h);
  }
}

static void set_plane_n4(MACROBLOCKD *const xd, int bw, int bh, int bwl,
                         int bhl) {
  int i;
  for (i = 0; i < MAX_MB_PLANE; i++) {
    xd->plane[i].n4_w = (bw << 1) >> xd->plane[i].subsampling_x;
    xd->plane[i].n4_h = (bh << 1) >> xd->plane[i].subsampling_y;
    xd->plane[i].n4_wl = bwl - xd->plane[i].subsampling_x;
    xd->plane[i].n4_hl = bhl - xd->plane[i].subsampling_y;
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
399
static MB_MODE_INFO *set_offsets(AV1_COMMON *const cm, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
400
                                 BLOCK_SIZE bsize, int mi_row, int mi_col,
401
402
                                 int bw, int bh, int x_mis, int y_mis, int bwl,
                                 int bhl) {
Jingning Han's avatar
Jingning Han committed
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
  const int offset = mi_row * cm->mi_stride + mi_col;
  int x, y;
  const TileInfo *const tile = &xd->tile;

  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = &cm->mi[offset];
  // TODO(slavarnway): Generate sb_type based on bwl and bhl, instead of
  // passing bsize from decode_partition().
  xd->mi[0]->mbmi.sb_type = bsize;
  for (y = 0; y < y_mis; ++y)
    for (x = !y; x < x_mis; ++x) {
      xd->mi[y * cm->mi_stride + x] = xd->mi[0];
    }

  set_plane_n4(xd, bw, bh, bwl, bhl);

  set_skip_context(xd, mi_row, mi_col);

421
422
423
424
#if CONFIG_VAR_TX
  xd->max_tx_size = max_txsize_lookup[bsize];
#endif

Jingning Han's avatar
Jingning Han committed
425
426
427
428
  // Distance of Mb to the various image edges. These are specified to 8th pel
  // as they are always compared to values that are in 1/8th pel units
  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);

Yaowu Xu's avatar
Yaowu Xu committed
429
  av1_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
430
431
432
  return &xd->mi[0]->mbmi;
}

433
#if CONFIG_SUPERTX
Yaowu Xu's avatar
Yaowu Xu committed
434
static MB_MODE_INFO *set_offsets_extend(AV1_COMMON *const cm,
435
436
                                        MACROBLOCKD *const xd,
                                        const TileInfo *const tile,
437
438
439
                                        BLOCK_SIZE bsize_pred, int mi_row_pred,
                                        int mi_col_pred, int mi_row_ori,
                                        int mi_col_ori) {
440
441
442
443
444
445
446
447
448
449
  // Used in supertx
  // (mi_row_ori, mi_col_ori): location for mv
  // (mi_row_pred, mi_col_pred, bsize_pred): region to predict
  const int bw = num_8x8_blocks_wide_lookup[bsize_pred];
  const int bh = num_8x8_blocks_high_lookup[bsize_pred];
  const int offset = mi_row_ori * cm->mi_stride + mi_col_ori;
  const int bwl = b_width_log2_lookup[bsize_pred];
  const int bhl = b_height_log2_lookup[bsize_pred];
  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = cm->mi + offset;
450
451
  set_mi_row_col(xd, tile, mi_row_pred, bh, mi_col_pred, bw, cm->mi_rows,
                 cm->mi_cols);
452

453
454
  xd->up_available = (mi_row_ori > tile->mi_row_start);
  xd->left_available = (mi_col_ori > tile->mi_col_start);
455
456
457
458
459
460

  set_plane_n4(xd, bw, bh, bwl, bhl);

  return &xd->mi[0]->mbmi;
}

Yaowu Xu's avatar
Yaowu Xu committed
461
462
463
static MB_MODE_INFO *set_mb_offsets(AV1_COMMON *const cm, MACROBLOCKD *const xd,
                                    BLOCK_SIZE bsize, int mi_row, int mi_col,
                                    int bw, int bh, int x_mis, int y_mis) {
464
465
466
467
468
469
470
471
  const int offset = mi_row * cm->mi_stride + mi_col;
  const TileInfo *const tile = &xd->tile;
  int x, y;

  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = cm->mi + offset;
  xd->mi[0]->mbmi.sb_type = bsize;
  for (y = 0; y < y_mis; ++y)
472
    for (x = !y; x < x_mis; ++x) xd->mi[y * cm->mi_stride + x] = xd->mi[0];
473
474
475
476
477

  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);
  return &xd->mi[0]->mbmi;
}

Yaowu Xu's avatar
Yaowu Xu committed
478
static void set_offsets_topblock(AV1_COMMON *const cm, MACROBLOCKD *const xd,
479
480
                                 const TileInfo *const tile, BLOCK_SIZE bsize,
                                 int mi_row, int mi_col) {
481
482
483
484
485
486
487
488
489
490
491
492
493
  const int bw = num_8x8_blocks_wide_lookup[bsize];
  const int bh = num_8x8_blocks_high_lookup[bsize];
  const int offset = mi_row * cm->mi_stride + mi_col;
  const int bwl = b_width_log2_lookup[bsize];
  const int bhl = b_height_log2_lookup[bsize];

  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = cm->mi + offset;

  set_plane_n4(xd, bw, bh, bwl, bhl);

  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);

Yaowu Xu's avatar
Yaowu Xu committed
494
  av1_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
495
496
}

Yaowu Xu's avatar
Yaowu Xu committed
497
static void set_param_topblock(AV1_COMMON *const cm, MACROBLOCKD *const xd,
498
                               BLOCK_SIZE bsize, int mi_row, int mi_col,
499
                               int txfm, int skip) {
500
501
  const int bw = num_8x8_blocks_wide_lookup[bsize];
  const int bh = num_8x8_blocks_high_lookup[bsize];
Yaowu Xu's avatar
Yaowu Xu committed
502
503
  const int x_mis = AOMMIN(bw, cm->mi_cols - mi_col);
  const int y_mis = AOMMIN(bh, cm->mi_rows - mi_row);
504
505
506
507
508
509
510
511
512
513
514
  const int offset = mi_row * cm->mi_stride + mi_col;
  int x, y;

  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = cm->mi + offset;

  for (y = 0; y < y_mis; ++y)
    for (x = 0; x < x_mis; ++x) {
      xd->mi[y * cm->mi_stride + x]->mbmi.skip = skip;
      xd->mi[y * cm->mi_stride + x]->mbmi.tx_type = txfm;
    }
515
516
#if CONFIG_VAR_TX
  xd->above_txfm_context = cm->above_txfm_context + mi_col;
517
  xd->left_txfm_context =
518
      xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK);
519
  set_txfm_ctxs(xd->mi[0]->mbmi.tx_size, bw, bh, xd);
520
#endif
521
522
}

Yaowu Xu's avatar
Yaowu Xu committed
523
static void set_ref(AV1_COMMON *const cm, MACROBLOCKD *const xd, int idx,
524
                    int mi_row, int mi_col) {
525
526
527
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  RefBuffer *ref_buffer = &cm->frame_refs[mbmi->ref_frame[idx] - LAST_FRAME];
  xd->block_refs[idx] = ref_buffer;
Yaowu Xu's avatar
Yaowu Xu committed
528
529
  if (!av1_is_valid_scale(&ref_buffer->sf))
    aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
530
                       "Invalid scale factors");
Yaowu Xu's avatar
Yaowu Xu committed
531
532
  av1_setup_pre_planes(xd, idx, ref_buffer->buf, mi_row, mi_col,
                       &ref_buffer->sf);
533
534
535
536
  xd->corrupted |= ref_buffer->buf->corrupted;
}

static void dec_predict_b_extend(
Yaowu Xu's avatar
Yaowu Xu committed
537
    AV1Decoder *const pbi, MACROBLOCKD *const xd, const TileInfo *const tile,
538
539
540
    int block, int mi_row_ori, int mi_col_ori, int mi_row_pred, int mi_col_pred,
    int mi_row_top, int mi_col_top, uint8_t *dst_buf[3], int dst_stride[3],
    BLOCK_SIZE bsize_top, BLOCK_SIZE bsize_pred, int b_sub8x8, int bextend) {
541
542
543
544
545
546
547
548
549
550
551
552
  // Used in supertx
  // (mi_row_ori, mi_col_ori): location for mv
  // (mi_row_pred, mi_col_pred, bsize_pred): region to predict
  // (mi_row_top, mi_col_top, bsize_top): region of the top partition size
  // block: sub location of sub8x8 blocks
  // b_sub8x8: 1: ori is sub8x8; 0: ori is not sub8x8
  // bextend: 1: region to predict is an extension of ori; 0: not
  int r = (mi_row_pred - mi_row_top) * MI_SIZE;
  int c = (mi_col_pred - mi_col_top) * MI_SIZE;
  const int mi_width_top = num_8x8_blocks_wide_lookup[bsize_top];
  const int mi_height_top = num_8x8_blocks_high_lookup[bsize_top];
  MB_MODE_INFO *mbmi;
Yaowu Xu's avatar
Yaowu Xu committed
553
  AV1_COMMON *const cm = &pbi->common;
554
555
556

  if (mi_row_pred < mi_row_top || mi_col_pred < mi_col_top ||
      mi_row_pred >= mi_row_top + mi_height_top ||
557
558
      mi_col_pred >= mi_col_top + mi_width_top || mi_row_pred >= cm->mi_rows ||
      mi_col_pred >= cm->mi_cols)
559
560
    return;

561
  mbmi = set_offsets_extend(cm, xd, tile, bsize_pred, mi_row_pred, mi_col_pred,
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
                            mi_row_ori, mi_col_ori);
  set_ref(cm, xd, 0, mi_row_pred, mi_col_pred);
  if (has_second_ref(&xd->mi[0]->mbmi))
    set_ref(cm, xd, 1, mi_row_pred, mi_col_pred);

  if (!bextend) {
    mbmi->tx_size = b_width_log2_lookup[bsize_top];
  }

  xd->plane[0].dst.stride = dst_stride[0];
  xd->plane[1].dst.stride = dst_stride[1];
  xd->plane[2].dst.stride = dst_stride[2];
  xd->plane[0].dst.buf = dst_buf[0] +
                         (r >> xd->plane[0].subsampling_y) * dst_stride[0] +
                         (c >> xd->plane[0].subsampling_x);
  xd->plane[1].dst.buf = dst_buf[1] +
                         (r >> xd->plane[1].subsampling_y) * dst_stride[1] +
                         (c >> xd->plane[1].subsampling_x);
  xd->plane[2].dst.buf = dst_buf[2] +
                         (r >> xd->plane[2].subsampling_y) * dst_stride[2] +
                         (c >> xd->plane[2].subsampling_x);

  if (!b_sub8x8)
Yaowu Xu's avatar
Yaowu Xu committed
585
    av1_build_inter_predictors_sb_extend(xd,
586
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
587
                                         mi_row_ori, mi_col_ori,
588
#endif  // CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
589
                                         mi_row_pred, mi_col_pred, bsize_pred);
590
  else
Yaowu Xu's avatar
Yaowu Xu committed
591
    av1_build_inter_predictors_sb_sub8x8_extend(xd,
592
#if CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
593
                                                mi_row_ori, mi_col_ori,
594
#endif  // CONFIG_EXT_INTER
Yaowu Xu's avatar
Yaowu Xu committed
595
596
                                                mi_row_pred, mi_col_pred,
                                                bsize_pred, block);
597
598
}

Yaowu Xu's avatar
Yaowu Xu committed
599
static void dec_extend_dir(AV1Decoder *const pbi, MACROBLOCKD *const xd,
600
                           const TileInfo *const tile, int block,
601
602
603
                           BLOCK_SIZE bsize, BLOCK_SIZE top_bsize, int mi_row,
                           int mi_col, int mi_row_top, int mi_col_top,
                           uint8_t *dst_buf[3], int dst_stride[3], int dir) {
604
605
606
607
608
609
610
611
612
613
614
  // dir: 0-lower, 1-upper, 2-left, 3-right
  //      4-lowerleft, 5-upperleft, 6-lowerright, 7-upperright
  const int mi_width = num_8x8_blocks_wide_lookup[bsize];
  const int mi_height = num_8x8_blocks_high_lookup[bsize];
  int xss = xd->plane[1].subsampling_x;
  int yss = xd->plane[1].subsampling_y;
  int b_sub8x8 = (bsize < BLOCK_8X8) ? 1 : 0;
  BLOCK_SIZE extend_bsize;
  int unit, mi_row_pred, mi_col_pred;

  if (dir == 0 || dir == 1) {
615
616
617
    extend_bsize = (mi_width == 1 || bsize < BLOCK_8X8 || xss < yss)
                       ? BLOCK_8X8
                       : BLOCK_16X8;
618
619
620
621
    unit = num_8x8_blocks_wide_lookup[extend_bsize];
    mi_row_pred = mi_row + ((dir == 0) ? mi_height : -1);
    mi_col_pred = mi_col;

622
623
624
    dec_predict_b_extend(pbi, xd, tile, block, mi_row, mi_col, mi_row_pred,
                         mi_col_pred, mi_row_top, mi_col_top, dst_buf,
                         dst_stride, top_bsize, extend_bsize, b_sub8x8, 1);
625
626
627
628

    if (mi_width > unit) {
      int i;
      assert(!b_sub8x8);
629
      for (i = 0; i < mi_width / unit - 1; i++) {
630
        mi_col_pred += unit;
631
632
633
        dec_predict_b_extend(pbi, xd, tile, block, mi_row, mi_col, mi_row_pred,
                             mi_col_pred, mi_row_top, mi_col_top, dst_buf,
                             dst_stride, top_bsize, extend_bsize, b_sub8x8, 1);
634
635
636
      }
    }
  } else if (dir == 2 || dir == 3) {
637
638
639
    extend_bsize = (mi_height == 1 || bsize < BLOCK_8X8 || yss < xss)
                       ? BLOCK_8X8
                       : BLOCK_8X16;
640
641
642
643
    unit = num_8x8_blocks_high_lookup[extend_bsize];
    mi_row_pred = mi_row;
    mi_col_pred = mi_col + ((dir == 3) ? mi_width : -1);

644
645
646
    dec_predict_b_extend(pbi, xd, tile, block, mi_row, mi_col, mi_row_pred,
                         mi_col_pred, mi_row_top, mi_col_top, dst_buf,
                         dst_stride, top_bsize, extend_bsize, b_sub8x8, 1);
647
648
649

    if (mi_height > unit) {
      int i;
650
      for (i = 0; i < mi_height / unit - 1; i++) {
651
        mi_row_pred += unit;
652
653
654
        dec_predict_b_extend(pbi, xd, tile, block, mi_row, mi_col, mi_row_pred,
                             mi_col_pred, mi_row_top, mi_col_top, dst_buf,
                             dst_stride, top_bsize, extend_bsize, b_sub8x8, 1);
655
656
657
658
659
660
      }
    }
  } else {
    extend_bsize = BLOCK_8X8;
    mi_row_pred = mi_row + ((dir == 4 || dir == 6) ? mi_height : -1);
    mi_col_pred = mi_col + ((dir == 6 || dir == 7) ? mi_width : -1);
661
662
663
    dec_predict_b_extend(pbi, xd, tile, block, mi_row, mi_col, mi_row_pred,
                         mi_col_pred, mi_row_top, mi_col_top, dst_buf,
                         dst_stride, top_bsize, extend_bsize, b_sub8x8, 1);
664
665
666
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
667
static void dec_extend_all(AV1Decoder *const pbi, MACROBLOCKD *const xd,
668
                           const TileInfo *const tile, int block,
669
670
671
                           BLOCK_SIZE bsize, BLOCK_SIZE top_bsize, int mi_row,
                           int mi_col, int mi_row_top, int mi_col_top,
                           uint8_t *dst_buf[3], int dst_stride[3]) {
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 0);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 1);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 2);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 3);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 4);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 5);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 6);
  dec_extend_dir(pbi, xd, tile, block, bsize, top_bsize, mi_row, mi_col,
                 mi_row_top, mi_col_top, dst_buf, dst_stride, 7);
}

Yaowu Xu's avatar
Yaowu Xu committed
690
static void dec_predict_sb_complex(AV1Decoder *const pbi, MACROBLOCKD *const xd,
691
692
                                   const TileInfo *const tile, int mi_row,
                                   int mi_col, int mi_row_top, int mi_col_top,
693
694
                                   BLOCK_SIZE bsize, BLOCK_SIZE top_bsize,
                                   uint8_t *dst_buf[3], int dst_stride[3]) {
Yaowu Xu's avatar
Yaowu Xu committed
695
  const AV1_COMMON *const cm = &pbi->common;
696
697
698
  const int hbs = num_8x8_blocks_wide_lookup[bsize] / 2;
  const PARTITION_TYPE partition = get_partition(cm, mi_row, mi_col, bsize);
  const BLOCK_SIZE subsize = get_subsize(bsize, partition);
699
#if CONFIG_EXT_PARTITION_TYPES
700
  const BLOCK_SIZE bsize2 = get_subsize(bsize, PARTITION_SPLIT);
701
#endif
702
703
  int i;
  const int mi_offset = mi_row * cm->mi_stride + mi_col;
704
705
  uint8_t *dst_buf1[3], *dst_buf2[3], *dst_buf3[3];

706
707
708
709
710
711
  DECLARE_ALIGNED(16, uint8_t, tmp_buf1[MAX_MB_PLANE * MAX_TX_SQUARE * 2]);
  DECLARE_ALIGNED(16, uint8_t, tmp_buf2[MAX_MB_PLANE * MAX_TX_SQUARE * 2]);
  DECLARE_ALIGNED(16, uint8_t, tmp_buf3[MAX_MB_PLANE * MAX_TX_SQUARE * 2]);
  int dst_stride1[3] = { MAX_TX_SIZE, MAX_TX_SIZE, MAX_TX_SIZE };
  int dst_stride2[3] = { MAX_TX_SIZE, MAX_TX_SIZE, MAX_TX_SIZE };
  int dst_stride3[3] = { MAX_TX_SIZE, MAX_TX_SIZE, MAX_TX_SIZE };
712

Yaowu Xu's avatar
Yaowu Xu committed
713
#if CONFIG_AOM_HIGHBITDEPTH
714
715
716
  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    int len = sizeof(uint16_t);
    dst_buf1[0] = CONVERT_TO_BYTEPTR(tmp_buf1);
717
718
    dst_buf1[1] = CONVERT_TO_BYTEPTR(tmp_buf1 + MAX_TX_SQUARE * len);
    dst_buf1[2] = CONVERT_TO_BYTEPTR(tmp_buf1 + 2 * MAX_TX_SQUARE * len);
719
    dst_buf2[0] = CONVERT_TO_BYTEPTR(tmp_buf2);
720
721
    dst_buf2[1] = CONVERT_TO_BYTEPTR(tmp_buf2 + MAX_TX_SQUARE * len);
    dst_buf2[2] = CONVERT_TO_BYTEPTR(tmp_buf2 + 2 * MAX_TX_SQUARE * len);
722
    dst_buf3[0] = CONVERT_TO_BYTEPTR(tmp_buf3);
723
724
    dst_buf3[1] = CONVERT_TO_BYTEPTR(tmp_buf3 + MAX_TX_SQUARE * len);
    dst_buf3[2] = CONVERT_TO_BYTEPTR(tmp_buf3 + 2 * MAX_TX_SQUARE * len);
725
726
727
  } else {
#endif
    dst_buf1[0] = tmp_buf1;
728
729
    dst_buf1[1] = tmp_buf1 + MAX_TX_SQUARE;
    dst_buf1[2] = tmp_buf1 + 2 * MAX_TX_SQUARE;
730
    dst_buf2[0] = tmp_buf2;
731
732
    dst_buf2[1] = tmp_buf2 + MAX_TX_SQUARE;
    dst_buf2[2] = tmp_buf2 + 2 * MAX_TX_SQUARE;
733
    dst_buf3[0] = tmp_buf3;
734
735
    dst_buf3[1] = tmp_buf3 + MAX_TX_SQUARE;
    dst_buf3[2] = tmp_buf3 + 2 * MAX_TX_SQUARE;
Yaowu Xu's avatar
Yaowu Xu committed
736
#if CONFIG_AOM_HIGHBITDEPTH
737
738
739
  }
#endif

740
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
741

742
743
  xd->mi = cm->mi_grid_visible + mi_offset;
  xd->mi[0] = cm->mi + mi_offset;
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

  for (i = 0; i < MAX_MB_PLANE; i++) {
    xd->plane[i].dst.buf = dst_buf[i];
    xd->plane[i].dst.stride = dst_stride[i];
  }

  switch (partition) {
    case PARTITION_NONE:
      assert(bsize < top_bsize);
      dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                           mi_row_top, mi_col_top, dst_buf, dst_stride,
                           top_bsize, bsize, 0, 0);
      dec_extend_all(pbi, xd, tile, 0, bsize, top_bsize, mi_row, mi_col,
                     mi_row_top, mi_col_top, dst_buf, dst_stride);
      break;
    case PARTITION_HORZ:
      if (bsize == BLOCK_8X8) {
        // For sub8x8, predict in 8x8 unit
        // First half
        dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf, dst_stride,
                             top_bsize, BLOCK_8X8, 1, 0);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride);

        // Second half
        dec_predict_b_extend(pbi, xd, tile, 2, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf1, dst_stride1,
                             top_bsize, BLOCK_8X8, 1, 1);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 2, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf1, dst_stride1);

        // weighted average to smooth the boundary
        xd->plane[0].dst.buf = dst_buf[0];
        xd->plane[0].dst.stride = dst_stride[0];
Yaowu Xu's avatar
Yaowu Xu committed
781
        av1_build_masked_inter_predictor_complex(
782
783
784
            xd, dst_buf[0], dst_stride[0], dst_buf1[0], dst_stride1[0], mi_row,
            mi_col, mi_row_top, mi_col_top, bsize, top_bsize, PARTITION_HORZ,
            0);
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
      } else {
        // First half
        dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf, dst_stride,
                             top_bsize, subsize, 0, 0);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride);
        else
          dec_extend_dir(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride, 0);

        if (mi_row + hbs < cm->mi_rows) {
          // Second half
          dec_predict_b_extend(pbi, xd, tile, 0, mi_row + hbs, mi_col,
800
801
                               mi_row + hbs, mi_col, mi_row_top, mi_col_top,
                               dst_buf1, dst_stride1, top_bsize, subsize, 0, 0);
802
          if (bsize < top_bsize)
803
804
805
            dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row + hbs,
                           mi_col, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1);
806
          else
807
808
809
            dec_extend_dir(pbi, xd, tile, 0, subsize, top_bsize, mi_row + hbs,
                           mi_col, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1, 1);
810
811
812
813
814

          // weighted average to smooth the boundary
          for (i = 0; i < MAX_MB_PLANE; i++) {
            xd->plane[i].dst.buf = dst_buf[i];
            xd->plane[i].dst.stride = dst_stride[i];
Yaowu Xu's avatar
Yaowu Xu committed
815
            av1_build_masked_inter_predictor_complex(
816
                xd, dst_buf[i], dst_stride[i], dst_buf1[i], dst_stride1[i],
817
818
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_HORZ, i);
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
          }
        }
      }
      break;
    case PARTITION_VERT:
      if (bsize == BLOCK_8X8) {
        // First half
        dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf, dst_stride,
                             top_bsize, BLOCK_8X8, 1, 0);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride);

        // Second half
        dec_predict_b_extend(pbi, xd, tile, 1, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf1, dst_stride1,
                             top_bsize, BLOCK_8X8, 1, 1);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 1, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf1, dst_stride1);

        // Smooth
        xd->plane[0].dst.buf = dst_buf[0];
        xd->plane[0].dst.stride = dst_stride[0];
Yaowu Xu's avatar
Yaowu Xu committed
844
        av1_build_masked_inter_predictor_complex(
845
846
847
            xd, dst_buf[0], dst_stride[0], dst_buf1[0], dst_stride1[0], mi_row,
            mi_col, mi_row_top, mi_col_top, bsize, top_bsize, PARTITION_VERT,
            0);
848
849
850
851
852
853
854
855
856
857
858
859
860
861
      } else {
        // First half
        dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf, dst_stride,
                             top_bsize, subsize, 0, 0);
        if (bsize < top_bsize)
          dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride);
        else
          dec_extend_dir(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride, 3);

        // Second half
        if (mi_col + hbs < cm->mi_cols) {
862
863
864
          dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col + hbs, mi_row,
                               mi_col + hbs, mi_row_top, mi_col_top, dst_buf1,
                               dst_stride1, top_bsize, subsize, 0, 0);
865
          if (bsize < top_bsize)
866
867
868
            dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row,
                           mi_col + hbs, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1);
869
          else
870
871
872
            dec_extend_dir(pbi, xd, tile, 0, subsize, top_bsize, mi_row,
                           mi_col + hbs, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1, 2);
873
874
875
876
877

          // Smooth
          for (i = 0; i < MAX_MB_PLANE; i++) {
            xd->plane[i].dst.buf = dst_buf[i];
            xd->plane[i].dst.stride = dst_stride[i];
Yaowu Xu's avatar
Yaowu Xu committed
878
            av1_build_masked_inter_predictor_complex(
879
                xd, dst_buf[i], dst_stride[i], dst_buf1[i], dst_stride1[i],
880
881
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_VERT, i);
882
883
884
885
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
          }
        }
      }
      break;
    case PARTITION_SPLIT:
      if (bsize == BLOCK_8X8) {
        dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf, dst_stride,
                             top_bsize, BLOCK_8X8, 1, 0);
        dec_predict_b_extend(pbi, xd, tile, 1, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf1, dst_stride1,
                             top_bsize, BLOCK_8X8, 1, 1);
        dec_predict_b_extend(pbi, xd, tile, 2, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf2, dst_stride2,
                             top_bsize, BLOCK_8X8, 1, 1);
        dec_predict_b_extend(pbi, xd, tile, 3, mi_row, mi_col, mi_row, mi_col,
                             mi_row_top, mi_col_top, dst_buf3, dst_stride3,
                             top_bsize, BLOCK_8X8, 1, 1);
        if (bsize < top_bsize) {
          dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf, dst_stride);
          dec_extend_all(pbi, xd, tile, 1, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf1, dst_stride1);
          dec_extend_all(pbi, xd, tile, 2, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf2, dst_stride2);
          dec_extend_all(pbi, xd, tile, 3, subsize, top_bsize, mi_row, mi_col,
                         mi_row_top, mi_col_top, dst_buf3, dst_stride3);
        }
      } else {
911
912
913
        dec_predict_sb_complex(pbi, xd, tile, mi_row, mi_col, mi_row_top,
                               mi_col_top, subsize, top_bsize, dst_buf,
                               dst_stride);
914
915
916
917
918
919
920
921
922
923
924
925
926
        if (mi_row < cm->mi_rows && mi_col + hbs < cm->mi_cols)
          dec_predict_sb_complex(pbi, xd, tile, mi_row, mi_col + hbs,
                                 mi_row_top, mi_col_top, subsize, top_bsize,
                                 dst_buf1, dst_stride1);
        if (mi_row + hbs < cm->mi_rows && mi_col < cm->mi_cols)
          dec_predict_sb_complex(pbi, xd, tile, mi_row + hbs, mi_col,
                                 mi_row_top, mi_col_top, subsize, top_bsize,
                                 dst_buf2, dst_stride2);
        if (mi_row + hbs < cm->mi_rows && mi_col + hbs < cm->mi_cols)
          dec_predict_sb_complex(pbi, xd, tile, mi_row + hbs, mi_col + hbs,
                                 mi_row_top, mi_col_top, subsize, top_bsize,
                                 dst_buf3, dst_stride3);
      }
927
928
929
930
      for (i = 0; i < MAX_MB_PLANE; i++) {
        if (bsize == BLOCK_8X8 && i != 0)
          continue;  // Skip <4x4 chroma smoothing
        if (mi_row < cm->mi_rows && mi_col + hbs < cm->mi_cols) {
Yaowu Xu's avatar
Yaowu Xu committed
931
          av1_build_masked_inter_predictor_complex(
932
933
934
935
              xd, dst_buf[i], dst_stride[i], dst_buf1[i], dst_stride1[i],
              mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
              PARTITION_VERT, i);
          if (mi_row + hbs < cm->mi_rows) {
Yaowu Xu's avatar
Yaowu Xu committed
936
            av1_build_masked_inter_predictor_complex(
937
938
939
                xd, dst_buf2[i], dst_stride2[i], dst_buf3[i], dst_stride3[i],
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_VERT, i);
Yaowu Xu's avatar
Yaowu Xu committed
940
            av1_build_masked_inter_predictor_complex(
941
942
943
                xd, dst_buf[i], dst_stride[i], dst_buf2[i], dst_stride2[i],
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_HORZ, i);
944
          }
945
        } else if (mi_row + hbs < cm->mi_rows && mi_col < cm->mi_cols) {
Yaowu Xu's avatar
Yaowu Xu committed
946
          av1_build_masked_inter_predictor_complex(
947
948
949
              xd, dst_buf[i], dst_stride[i], dst_buf2[i], dst_stride2[i],
              mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
              PARTITION_HORZ, i);
950
        }
951
      }
952
      break;
953
954
955
956
957
958
959
960
961
#if CONFIG_EXT_PARTITION_TYPES
    case PARTITION_HORZ_A:
      dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col, mi_row, mi_col,
                           mi_row_top, mi_col_top, dst_buf, dst_stride,
                           top_bsize, bsize2, 0, 0);
      dec_extend_all(pbi, xd, tile, 0, bsize2, top_bsize, mi_row, mi_col,
                     mi_row_top, mi_col_top, dst_buf, dst_stride);

      dec_predict_b_extend(pbi, xd, tile, 0, mi_row, mi_col + hbs, mi_row,
962
963
                           mi_col + hbs, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1, top_bsize, bsize2, 0, 0);
964
965
966
      dec_extend_all(pbi, xd, tile, 0, bsize2, top_bsize, mi_row, mi_col + hbs,
                     mi_row_top, mi_col_top, dst_buf1, dst_stride1);

967
968
969
      dec_predict_b_extend(pbi, xd, tile, 0, mi_row + hbs, mi_col, mi_row + hbs,
                           mi_col, mi_row_top, mi_col_top, dst_buf2,
                           dst_stride2, top_bsize, subsize, 0, 0);
970
      if (bsize < top_bsize)
971
972
        dec_extend_all(pbi, xd, tile, 0, subsize, top_bsize, mi_row + hbs,
                       mi_col, mi_row_top, mi_col_top, dst_buf2, dst_stride2);
973
      else
974
975
976
        dec_extend_dir(pbi, xd, tile, 0, subsize, top_bsize, mi_row + hbs,
                       mi_col, mi_row_top, mi_col_top, dst_buf2, dst_stride2,
                       1);
977
978
979
980

      for (i = 0; i < MAX_MB_PLANE; i++) {
        xd->plane[i].dst.buf = dst_buf[i];
        xd->plane[i].dst.stride = dst_stride[i];
Yaowu Xu's avatar
Yaowu Xu committed