decodeframe.c 158 KB
Newer Older
Jingning Han's avatar
Jingning Han committed
1
/*
2
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
Jingning Han's avatar
Jingning Han committed
3
 *
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()

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

20
#include "aom/aom_codec.h"
21
#include "aom_dsp/aom_dsp_common.h"
Jingning Han's avatar
Jingning Han committed
22 23
#include "aom_dsp/bitreader.h"
#include "aom_dsp/bitreader_buffer.h"
24
#include "aom_mem/aom_mem.h"
25 26
#include "aom_ports/mem.h"
#include "aom_ports/mem_ops.h"
27 28
#include "aom_scale/aom_scale.h"
#include "aom_util/aom_thread.h"
Jingning Han's avatar
Jingning Han committed
29

30
#include "av1/common/alloccommon.h"
31
#if CONFIG_CLPF
Steinar Midtskogen's avatar
Steinar Midtskogen committed
32
#include "aom/aom_image.h"
33
#include "av1/common/clpf.h"
34
#endif
35
#include "av1/common/common.h"
Yaowu Xu's avatar
Yaowu Xu committed
36
#if CONFIG_DERING
37
#include "av1/common/dering.h"
Yaowu Xu's avatar
Yaowu Xu committed
38
#endif  // CONFIG_DERING
39 40 41 42 43 44
#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
45
#include "av1/common/reconintra.h"
46
#include "av1/common/seg_common.h"
Jingning Han's avatar
Jingning Han committed
47
#include "av1/common/thread_common.h"
48
#include "av1/common/tile_common.h"
49

50 51 52
#include "av1/decoder/decodeframe.h"
#include "av1/decoder/decodemv.h"
#include "av1/decoder/decoder.h"
Jingning Han's avatar
Jingning Han committed
53
#include "av1/decoder/detokenize.h"
54
#include "av1/decoder/dsubexp.h"
Jingning Han's avatar
Jingning Han committed
55

56
#define MAX_AV1_HEADER_SIZE 80
Michael Bebenita's avatar
Michael Bebenita committed
57
#define ACCT_STR __func__
Jingning Han's avatar
Jingning Han committed
58

59
static int is_compound_reference_allowed(const AV1_COMMON *cm) {
Jingning Han's avatar
Jingning Han committed
60
  int i;
61
  if (frame_is_intra_only(cm)) return 0;
62
  for (i = 1; i < INTER_REFS_PER_FRAME; ++i)
63
    if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1]) return 1;
Jingning Han's avatar
Jingning Han committed
64 65 66 67

  return 0;
}

68
static void setup_compound_reference_mode(AV1_COMMON *cm) {
69
#if CONFIG_EXT_REFS
70
  cm->comp_fwd_ref[0] = LAST_FRAME;
71 72 73 74
  cm->comp_fwd_ref[1] = LAST2_FRAME;
  cm->comp_fwd_ref[2] = LAST3_FRAME;
  cm->comp_fwd_ref[3] = GOLDEN_FRAME;

75 76
  cm->comp_bwd_ref[0] = BWDREF_FRAME;
  cm->comp_bwd_ref[1] = ALTREF_FRAME;
77
#else
Jingning Han's avatar
Jingning Han committed
78
  if (cm->ref_frame_sign_bias[LAST_FRAME] ==
79
      cm->ref_frame_sign_bias[GOLDEN_FRAME]) {
Jingning Han's avatar
Jingning Han committed
80 81 82 83
    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] ==
84
             cm->ref_frame_sign_bias[ALTREF_FRAME]) {
Jingning Han's avatar
Jingning Han committed
85 86 87 88 89 90 91 92
    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;
  }
93
#endif  // CONFIG_EXT_REFS
Jingning Han's avatar
Jingning Han committed
94 95 96 97 98 99
}

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

100 101
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
102 103 104
  return data > max ? max : data;
}

105 106
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);
107
}
Jingning Han's avatar
Jingning Han committed
108

109
static void read_switchable_interp_probs(FRAME_CONTEXT *fc, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
110
  int i, j;
111
  for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j) {
Jingning Han's avatar
Jingning Han committed
112
    for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
113
      av1_diff_update_prob(r, &fc->switchable_interp_prob[j][i], ACCT_STR);
114 115 116 117 118
#if CONFIG_DAALA_EC
    av1_tree_to_cdf(av1_switchable_interp_tree, fc->switchable_interp_prob[j],
                    fc->switchable_interp_cdf[j]);
#endif
  }
Jingning Han's avatar
Jingning Han committed
119 120
}

121
static void read_inter_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
122 123 124
  int i;
#if CONFIG_REF_MV
  for (i = 0; i < NEWMV_MODE_CONTEXTS; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
125
    av1_diff_update_prob(r, &fc->newmv_prob[i], ACCT_STR);
126
  for (i = 0; i < ZEROMV_MODE_CONTEXTS; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
127
    av1_diff_update_prob(r, &fc->zeromv_prob[i], ACCT_STR);
128
  for (i = 0; i < REFMV_MODE_CONTEXTS; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
129
    av1_diff_update_prob(r, &fc->refmv_prob[i], ACCT_STR);
130
  for (i = 0; i < DRL_MODE_CONTEXTS; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
131
    av1_diff_update_prob(r, &fc->drl_prob[i], ACCT_STR);
Yue Chen's avatar
Yue Chen committed
132
#if CONFIG_EXT_INTER
Michael Bebenita's avatar
Michael Bebenita committed
133
  av1_diff_update_prob(r, &fc->new2mv_prob, ACCT_STR);
Yue Chen's avatar
Yue Chen committed
134
#endif  // CONFIG_EXT_INTER
135 136
#else
  int j;
137
  for (i = 0; i < INTER_MODE_CONTEXTS; ++i) {
Jingning Han's avatar
Jingning Han committed
138
    for (j = 0; j < INTER_MODES - 1; ++j)
Michael Bebenita's avatar
Michael Bebenita committed
139
      av1_diff_update_prob(r, &fc->inter_mode_probs[i][j], ACCT_STR);
140 141 142 143 144
#if CONFIG_DAALA_EC
    av1_tree_to_cdf(av1_inter_mode_tree, fc->inter_mode_probs[i],
                    fc->inter_mode_cdf[i]);
#endif
  }
145
#endif
Jingning Han's avatar
Jingning Han committed
146 147
}

148
#if CONFIG_EXT_INTER
149
static void read_inter_compound_mode_probs(FRAME_CONTEXT *fc, aom_reader *r) {
150
  int i, j;
Michael Bebenita's avatar
Michael Bebenita committed
151
  if (aom_read(r, GROUP_DIFF_UPDATE_PROB, ACCT_STR)) {
152 153
    for (j = 0; j < INTER_MODE_CONTEXTS; ++j) {
      for (i = 0; i < INTER_COMPOUND_MODES - 1; ++i) {
Michael Bebenita's avatar
Michael Bebenita committed
154
        av1_diff_update_prob(r, &fc->inter_compound_mode_probs[j][i], ACCT_STR);
155 156 157 158 159 160
      }
    }
  }
}
#endif  // CONFIG_EXT_INTER

161
static REFERENCE_MODE read_frame_reference_mode(
162
    const AV1_COMMON *cm, struct aom_read_bit_buffer *rb) {
163
  if (is_compound_reference_allowed(cm)) {
164
    return aom_rb_read_bit(rb)
165
               ? REFERENCE_MODE_SELECT
166
               : (aom_rb_read_bit(rb) ? COMPOUND_REFERENCE : SINGLE_REFERENCE);
167 168 169 170
  } else {
    return SINGLE_REFERENCE;
  }
}
Jingning Han's avatar
Jingning Han committed
171

172
static void read_frame_reference_mode_probs(AV1_COMMON *cm, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
173
  FRAME_CONTEXT *const fc = cm->fc;
174
  int i, j;
Jingning Han's avatar
Jingning Han committed
175 176 177

  if (cm->reference_mode == REFERENCE_MODE_SELECT)
    for (i = 0; i < COMP_INTER_CONTEXTS; ++i)
Michael Bebenita's avatar
Michael Bebenita committed
178
      av1_diff_update_prob(r, &fc->comp_inter_prob[i], ACCT_STR);
Jingning Han's avatar
Jingning Han committed
179

180
  if (cm->reference_mode != COMPOUND_REFERENCE) {
Jingning Han's avatar
Jingning Han committed
181
    for (i = 0; i < REF_CONTEXTS; ++i) {
182
      for (j = 0; j < (SINGLE_REFS - 1); ++j) {
Michael Bebenita's avatar
Michael Bebenita committed
183
        av1_diff_update_prob(r, &fc->single_ref_prob[i][j], ACCT_STR);
184
      }
Jingning Han's avatar
Jingning Han committed
185
    }
186
  }
Jingning Han's avatar
Jingning Han committed
187

188 189
  if (cm->reference_mode != SINGLE_REFERENCE) {
    for (i = 0; i < REF_CONTEXTS; ++i) {
190
#if CONFIG_EXT_REFS
191
      for (j = 0; j < (FWD_REFS - 1); ++j)
Michael Bebenita's avatar
Michael Bebenita committed
192
        av1_diff_update_prob(r, &fc->comp_ref_prob[i][j], ACCT_STR);
193
      for (j = 0; j < (BWD_REFS - 1); ++j)
Michael Bebenita's avatar
Michael Bebenita committed
194
        av1_diff_update_prob(r, &fc->comp_bwdref_prob[i][j], ACCT_STR);
195 196
#else
      for (j = 0; j < (COMP_REFS - 1); ++j)
Michael Bebenita's avatar
Michael Bebenita committed
197
        av1_diff_update_prob(r, &fc->comp_ref_prob[i][j], ACCT_STR);
198
#endif  // CONFIG_EXT_REFS
199 200
    }
  }
Jingning Han's avatar
Jingning Han committed
201 202
}

203
static void update_mv_probs(aom_prob *p, int n, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
204
  int i;
Michael Bebenita's avatar
Michael Bebenita committed
205
  for (i = 0; i < n; ++i) av1_diff_update_prob(r, &p[i], ACCT_STR);
Jingning Han's avatar
Jingning Han committed
206 207
}

208
static void read_mv_probs(nmv_context *ctx, int allow_hp, aom_reader *r) {
Jingning Han's avatar
Jingning Han committed
209 210 211
  int i, j;

  update_mv_probs(ctx->joints, MV_JOINTS - 1, r);
212 213 214
#if CONFIG_DAALA_EC
  av1_tree_to_cdf(av1_mv_joint_tree, ctx->joints, ctx->joint_cdf);
#endif
Jingning Han's avatar
Jingning Han committed
215 216 217 218 219 220 221

  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);
222 223 224
#if CONFIG_DAALA_EC
    av1_tree_to_cdf(av1_mv_class_tree, comp_ctx->classes, comp_ctx->class_cdf);
#endif
Jingning Han's avatar
Jingning Han committed
225 226 227 228
  }

  for (i = 0; i < 2; ++i) {
    nmv_component *const comp_ctx = &ctx->comps[i];
229
    for (j = 0; j < CLASS0_SIZE; ++j) {
Jingning Han's avatar
Jingning Han committed
230
      update_mv_probs(comp_ctx->class0_fp[j], MV_FP_SIZE - 1, r);
231 232 233 234 235
#if CONFIG_DAALA_EC
      av1_tree_to_cdf(av1_mv_fp_tree, comp_ctx->class0_fp[j],
                      comp_ctx->class0_fp_cdf[j]);
#endif
    }
236
    update_mv_probs(comp_ctx->fp, MV_FP_SIZE - 1, r);
237 238 239
#if CONFIG_DAALA_EC
    av1_tree_to_cdf(av1_mv_fp_tree, comp_ctx->fp, comp_ctx->fp_cdf);
#endif
Jingning Han's avatar
Jingning Han committed
240 241 242 243 244 245 246 247 248 249 250
  }

  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);
    }
  }
}

251
static void inverse_transform_block(MACROBLOCKD *xd, int plane,
252
                                    const TX_TYPE tx_type,
253 254
                                    const TX_SIZE tx_size, uint8_t *dst,
                                    int stride, int eob) {
Jingning Han's avatar
Jingning Han committed
255 256 257
  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
258 259 260 261
    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;
262
    inv_txfm_param.lossless = xd->lossless[xd->mi[0]->mbmi.segment_id];
Angie Chiang's avatar
Angie Chiang committed
263

264
#if CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
265
    if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
Angie Chiang's avatar
Angie Chiang committed
266 267
      inv_txfm_param.bd = xd->bd;
      highbd_inv_txfm_add(dqcoeff, dst, stride, &inv_txfm_param);
Jingning Han's avatar
Jingning Han committed
268
    } else {
269
#endif  // CONFIG_AOM_HIGHBITDEPTH
Angie Chiang's avatar
Angie Chiang committed
270
      inv_txfm_add(dqcoeff, dst, stride, &inv_txfm_param);
271
#if CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
272
    }
273
#endif  // CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
274

275 276 277
    // TODO(jingning): This cleans up different reset requests from various
    // experiments, but incurs unnecessary memset size.
    if (eob == 1)
Jingning Han's avatar
Jingning Han committed
278
      dqcoeff[0] = 0;
279 280
    else
      memset(dqcoeff, 0, tx_size_2d[tx_size] * sizeof(dqcoeff[0]));
Jingning Han's avatar
Jingning Han committed
281 282 283
  }
}

Angie Chiang's avatar
Angie Chiang committed
284 285
static void predict_and_reconstruct_intra_block(AV1_COMMON *cm,
                                                MACROBLOCKD *const xd,
Alex Converse's avatar
Alex Converse committed
286 287 288
#if CONFIG_ANS
                                                struct AnsDecoder *const r,
#else
289
                                                aom_reader *r,
Alex Converse's avatar
Alex Converse committed
290
#endif  // CONFIG_ANS
Jingning Han's avatar
Jingning Han committed
291
                                                MB_MODE_INFO *const mbmi,
292
                                                int plane, int row, int col,
Jingning Han's avatar
Jingning Han committed
293 294 295
                                                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
296
  PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
Jingning Han's avatar
Jingning Han committed
297
  uint8_t *dst;
hui su's avatar
hui su committed
298
  int block_idx = (row << 1) + col;
Jingning Han's avatar
Jingning Han committed
299 300 301
  dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col];

  if (mbmi->sb_type < BLOCK_8X8)
302
    if (plane == 0) mode = xd->mi[0]->bmi[(row << 1) + col].as_mode;
Jingning Han's avatar
Jingning Han committed
303

304 305
  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
306 307

  if (!mbmi->skip) {
hui su's avatar
hui su committed
308
    TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx, tx_size);
Angie Chiang's avatar
Angie Chiang committed
309
    const SCAN_ORDER *scan_order = get_scan(cm, tx_size, tx_type, 0);
310 311
    const int eob = av1_decode_block_tokens(
        xd, plane, scan_order, col, row, tx_size, tx_type, r, mbmi->segment_id);
312 313
    inverse_transform_block(xd, plane, tx_type, tx_size, dst, pd->dst.stride,
                            eob);
Jingning Han's avatar
Jingning Han committed
314 315 316
  }
}

317
#if CONFIG_VAR_TX
Angie Chiang's avatar
Angie Chiang committed
318 319 320
static void decode_reconstruct_tx(AV1_COMMON *cm, MACROBLOCKD *const xd,
                                  aom_reader *r, MB_MODE_INFO *const mbmi,
                                  int plane, BLOCK_SIZE plane_bsize, int block,
321 322
                                  int blk_row, int blk_col, TX_SIZE tx_size,
                                  int *eob_total) {
323
  const struct macroblockd_plane *const pd = &xd->plane[plane];
324
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
325 326
  const int tx_row = blk_row >> (1 - pd->subsampling_y);
  const int tx_col = blk_col >> (1 - pd->subsampling_x);
327
  const TX_SIZE plane_tx_size =
328
      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
329
            : mbmi->inter_tx_size[tx_row][tx_col];
330 331 332 333 334 335 336 337
  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);

338
  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
339

340
  if (tx_size == plane_tx_size) {
341
    PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
342
    TX_TYPE tx_type = get_tx_type(plane_type, xd, block, plane_tx_size);
Angie Chiang's avatar
Angie Chiang committed
343
    const SCAN_ORDER *sc = get_scan(cm, plane_tx_size, tx_type, 1);
344
    const int eob =
345 346
        av1_decode_block_tokens(xd, plane, sc, blk_col, blk_row, plane_tx_size,
                                tx_type, r, mbmi->segment_id);
347 348
    inverse_transform_block(
        xd, plane, tx_type, plane_tx_size,
349
        &pd->dst.buf[4 * blk_row * pd->dst.stride + 4 * blk_col],
350
        pd->dst.stride, eob);
351 352 353 354 355 356 357 358 359 360 361
    *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);
362
      int step = num_4x4_blocks_txsize_lookup[tx_size - 1];
363

364
      if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;
365

Angie Chiang's avatar
Angie Chiang committed
366 367 368
      decode_reconstruct_tx(cm, xd, r, mbmi, plane, plane_bsize,
                            block + i * step, offsetr, offsetc, tx_size - 1,
                            eob_total);
369 370 371
    }
  }
}
372
#endif  // CONFIG_VAR_TX
373

374
#if !CONFIG_VAR_TX || CONFIG_SUPERTX || (CONFIG_EXT_TX && CONFIG_RECT_TX)
Angie Chiang's avatar
Angie Chiang committed
375
static int reconstruct_inter_block(AV1_COMMON *cm, MACROBLOCKD *const xd,
Alex Converse's avatar
Alex Converse committed
376 377 378
#if CONFIG_ANS
                                   struct AnsDecoder *const r,
#else
379
                                   aom_reader *r,
Alex Converse's avatar
Alex Converse committed
380
#endif
381 382
                                   int segment_id, int plane, int row, int col,
                                   TX_SIZE tx_size) {
Jingning Han's avatar
Jingning Han committed
383
  struct macroblockd_plane *const pd = &xd->plane[plane];
hui su's avatar
hui su committed
384 385
  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
386
  TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx, tx_size);
Angie Chiang's avatar
Angie Chiang committed
387
  const SCAN_ORDER *scan_order = get_scan(cm, tx_size, tx_type, 1);
388 389
  const int eob = av1_decode_block_tokens(xd, plane, scan_order, col, row,
                                          tx_size, tx_type, r, segment_id);
Jingning Han's avatar
Jingning Han committed
390

391 392 393
  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
394 395
  return eob;
}
396
#endif  // !CONFIG_VAR_TX || CONFIG_SUPER_TX
Jingning Han's avatar
Jingning Han committed
397 398 399 400 401 402 403 404 405 406

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);
  }
}

407
static MB_MODE_INFO *set_offsets(AV1_COMMON *const cm, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
408
                                 BLOCK_SIZE bsize, int mi_row, int mi_col,
409 410
                                 int bw, int bh, int x_mis, int y_mis, int bwl,
                                 int bhl) {
Jingning Han's avatar
Jingning Han committed
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)
Jingning Han's avatar
Jingning Han committed
421
    for (x = !y; x < x_mis; ++x) xd->mi[y * cm->mi_stride + x] = xd->mi[0];
Jingning Han's avatar
Jingning Han committed
422 423 424 425

  set_plane_n4(xd, bw, bh, bwl, bhl);
  set_skip_context(xd, mi_row, mi_col);

426 427 428 429
#if CONFIG_VAR_TX
  xd->max_tx_size = max_txsize_lookup[bsize];
#endif

Jingning Han's avatar
Jingning Han committed
430 431 432 433
  // 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);

434
  av1_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
435 436 437
  return &xd->mi[0]->mbmi;
}

438
#if CONFIG_SUPERTX
439
static MB_MODE_INFO *set_offsets_extend(AV1_COMMON *const cm,
440 441
                                        MACROBLOCKD *const xd,
                                        const TileInfo *const tile,
442 443 444
                                        BLOCK_SIZE bsize_pred, int mi_row_pred,
                                        int mi_col_pred, int mi_row_ori,
                                        int mi_col_ori) {
445 446 447 448 449 450 451 452 453 454
  // 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;
455 456
  set_mi_row_col(xd, tile, mi_row_pred, bh, mi_col_pred, bw, cm->mi_rows,
                 cm->mi_cols);
457

458 459
  xd->up_available = (mi_row_ori > tile->mi_row_start);
  xd->left_available = (mi_col_ori > tile->mi_col_start);
460 461 462 463 464 465

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

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

466 467 468
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) {
469 470 471 472 473 474 475 476
  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)
477
    for (x = !y; x < x_mis; ++x) xd->mi[y * cm->mi_stride + x] = xd->mi[0];
478 479 480 481 482

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

483
static void set_offsets_topblock(AV1_COMMON *const cm, MACROBLOCKD *const xd,
484 485
                                 const TileInfo *const tile, BLOCK_SIZE bsize,
                                 int mi_row, int mi_col) {
486 487 488 489 490 491 492 493 494 495 496 497 498
  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);

499
  av1_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
500 501
}

502
static void set_param_topblock(AV1_COMMON *const cm, MACROBLOCKD *const xd,
503
                               BLOCK_SIZE bsize, int mi_row, int mi_col,
504
                               int txfm, int skip) {
505 506
  const int bw = num_8x8_blocks_wide_lookup[bsize];
  const int bh = num_8x8_blocks_high_lookup[bsize];
507 508
  const int x_mis = AOMMIN(bw, cm->mi_cols - mi_col);
  const int y_mis = AOMMIN(bh, cm->mi_rows - mi_row);
509 510 511 512 513 514 515 516 517 518 519
  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;
    }
520 521
#if CONFIG_VAR_TX
  xd->above_txfm_context = cm->above_txfm_context + mi_col;
522
  xd->left_txfm_context =
523
      xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK);
524
  set_txfm_ctxs(xd->mi[0]->mbmi.tx_size, bw, bh, xd);
525
#endif
526 527
}

528
static void set_ref(AV1_COMMON *const cm, MACROBLOCKD *const xd, int idx,
529
                    int mi_row, int mi_col) {
530 531 532
  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;
533 534
  if (!av1_is_valid_scale(&ref_buffer->sf))
    aom_internal_error(&cm->error, AOM_CODEC_UNSUP_BITSTREAM,
535
                       "Invalid scale factors");
536 537
  av1_setup_pre_planes(xd, idx, ref_buffer->buf, mi_row, mi_col,
                       &ref_buffer->sf);
538 539 540 541
  xd->corrupted |= ref_buffer->buf->corrupted;
}

static void dec_predict_b_extend(
542
    AV1Decoder *const pbi, MACROBLOCKD *const xd, const TileInfo *const tile,
543 544 545
    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) {
546 547 548 549 550 551 552 553 554 555 556 557
  // 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;
558
  AV1_COMMON *const cm = &pbi->common;
559 560 561

  if (mi_row_pred < mi_row_top || mi_col_pred < mi_col_top ||
      mi_row_pred >= mi_row_top + mi_height_top ||
562 563
      mi_col_pred >= mi_col_top + mi_width_top || mi_row_pred >= cm->mi_rows ||
      mi_col_pred >= cm->mi_cols)
564 565
    return;

566
  mbmi = set_offsets_extend(cm, xd, tile, bsize_pred, mi_row_pred, mi_col_pred,
567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589
                            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)
590
    av1_build_inter_predictors_sb_extend(xd,
591
#if CONFIG_EXT_INTER
592
                                         mi_row_ori, mi_col_ori,
593
#endif  // CONFIG_EXT_INTER
594
                                         mi_row_pred, mi_col_pred, bsize_pred);
595
  else
596
    av1_build_inter_predictors_sb_sub8x8_extend(xd,
597
#if CONFIG_EXT_INTER
598
                                                mi_row_ori, mi_col_ori,
599
#endif  // CONFIG_EXT_INTER
600 601
                                                mi_row_pred, mi_col_pred,
                                                bsize_pred, block);
602 603
}

604
static void dec_extend_dir(AV1Decoder *const pbi, MACROBLOCKD *const xd,
605
                           const TileInfo *const tile, int block,
606 607 608
                           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) {
609 610 611 612 613 614 615 616 617 618 619
  // 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) {
620 621 622
    extend_bsize = (mi_width == 1 || bsize < BLOCK_8X8 || xss < yss)
                       ? BLOCK_8X8
                       : BLOCK_16X8;
623 624 625 626
    unit = num_8x8_blocks_wide_lookup[extend_bsize];
    mi_row_pred = mi_row + ((dir == 0) ? mi_height : -1);
    mi_col_pred = mi_col;

627 628 629
    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);
630 631 632 633

    if (mi_width > unit) {
      int i;
      assert(!b_sub8x8);
634
      for (i = 0; i < mi_width / unit - 1; i++) {
635
        mi_col_pred += unit;
636 637 638
        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);
639 640 641
      }
    }
  } else if (dir == 2 || dir == 3) {
642 643 644
    extend_bsize = (mi_height == 1 || bsize < BLOCK_8X8 || yss < xss)
                       ? BLOCK_8X8
                       : BLOCK_8X16;
645 646 647 648
    unit = num_8x8_blocks_high_lookup[extend_bsize];
    mi_row_pred = mi_row;
    mi_col_pred = mi_col + ((dir == 3) ? mi_width : -1);

649 650 651
    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);
652 653 654

    if (mi_height > unit) {
      int i;
655
      for (i = 0; i < mi_height / unit - 1; i++) {
656
        mi_row_pred += unit;
657 658 659
        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);
660 661 662 663 664 665
      }
    }
  } 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);
666 667 668
    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);
669 670 671
  }
}

672
static void dec_extend_all(AV1Decoder *const pbi, MACROBLOCKD *const xd,
673
                           const TileInfo *const tile, int block,
674 675 676
                           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]) {
677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694
  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);
}

695
static void dec_predict_sb_complex(AV1Decoder *const pbi, MACROBLOCKD *const xd,
696 697
                                   const TileInfo *const tile, int mi_row,
                                   int mi_col, int mi_row_top, int mi_col_top,
698 699
                                   BLOCK_SIZE bsize, BLOCK_SIZE top_bsize,
                                   uint8_t *dst_buf[3], int dst_stride[3]) {
700
  const AV1_COMMON *const cm = &pbi->common;
701 702 703
  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);
704
#if CONFIG_EXT_PARTITION_TYPES
705
  const BLOCK_SIZE bsize2 = get_subsize(bsize, PARTITION_SPLIT);
706
#endif
707 708
  int i;
  const int mi_offset = mi_row * cm->mi_stride + mi_col;
709 710
  uint8_t *dst_buf1[3], *dst_buf2[3], *dst_buf3[3];

711 712 713 714 715 716
  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 };
717

718
#if CONFIG_AOM_HIGHBITDEPTH
719 720 721
  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    int len = sizeof(uint16_t);
    dst_buf1[0] = CONVERT_TO_BYTEPTR(tmp_buf1);
722 723
    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);
724
    dst_buf2[0] = CONVERT_TO_BYTEPTR(tmp_buf2);
725 726
    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);
727
    dst_buf3[0] = CONVERT_TO_BYTEPTR(tmp_buf3);
728 729
    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);
730 731 732
  } else {
#endif
    dst_buf1[0] = tmp_buf1;
733 734
    dst_buf1[1] = tmp_buf1 + MAX_TX_SQUARE;
    dst_buf1[2] = tmp_buf1 + 2 * MAX_TX_SQUARE;
735
    dst_buf2[0] = tmp_buf2;
736 737
    dst_buf2[1] = tmp_buf2 + MAX_TX_SQUARE;
    dst_buf2[2] = tmp_buf2 + 2 * MAX_TX_SQUARE;
738
    dst_buf3[0] = tmp_buf3;
739 740
    dst_buf3[1] = tmp_buf3 + MAX_TX_SQUARE;
    dst_buf3[2] = tmp_buf3 + 2 * MAX_TX_SQUARE;
741
#if CONFIG_AOM_HIGHBITDEPTH
742 743 744
  }
#endif

745
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
746

747 748
  xd->mi = cm->mi_grid_visible + mi_offset;
  xd->mi[0] = cm->mi + mi_offset;
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

  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];
786
        av1_build_masked_inter_predictor_complex(
787 788 789
            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);
790 791 792 793 794 795 796 797 798 799 800 801 802 803 804
      } 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,
805 806
                               mi_row + hbs, mi_col, mi_row_top, mi_col_top,
                               dst_buf1, dst_stride1, top_bsize, subsize, 0, 0);
807
          if (bsize < top_bsize)
808 809 810
            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);
811
          else
812 813 814
            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);
815 816 817 818 819

          // 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];
820
            av1_build_masked_inter_predictor_complex(
821
                xd, dst_buf[i], dst_stride[i], dst_buf1[i], dst_stride1[i],
822 823
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_HORZ, i);
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848
          }
        }
      }
      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];
849
        av1_build_masked_inter_predictor_complex(
850 851 852
            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);
853 854 855 856 857 858 859 860 861 862 863 864 865 866
      } 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) {
867 868 869
          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);
870
          if (bsize < top_bsize)
871 872 873
            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);
874
          else
875 876 877
            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);
878 879 880 881 882

          // 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];
883
            av1_build_masked_inter_predictor_complex(
884
                xd, dst_buf[i], dst_stride[i], dst_buf1[i], dst_stride1[i],
885 886
                mi_row, mi_col, mi_row_top, mi_col_top, bsize, top_bsize,
                PARTITION_VERT, i);
887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
          }
        }
      }
      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 {
916 917 918
        dec_predict_sb_complex(pbi, xd, tile, mi_row, mi_col, mi_row_top,
                               mi_col_top, subsize, top_bsize, dst_buf,
                               dst_stride);
919 920 921 922 923 924 925 926 927 928 929 930 931
        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);
      }
932 933 934 935
      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) {
936
          av1_build_masked_inter_predictor_complex(
937 938 939 940
              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) {
941
            av1_build_masked_inter_predictor_complex(
942 943 944
                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);
945
            av1_build_masked_inter_predictor_complex(
946 947 948
                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);
949
          }
950
        } else if (mi_row + hbs < cm->mi_rows && mi_col < cm->mi_cols) {
951
          av1_build_masked_inter_predictor_complex(
952 953 954
              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);
955
        }
956
      }
957
      break;
958 959 960 961 962 963 964 965 966
#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,
967 968
                           mi_col + hbs, mi_row_top, mi_col_top, dst_buf1,
                           dst_stride1, top_bsize, bsize2, 0, 0);
969 970 971
      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);

972 973 974
      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);
975
      if (bsize < top_bsize)
976 977
        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);
978
      else
979 980 981
        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);
982 983 984 985

      for (i = 0; i < MAX_MB_PLANE; i++) {
        xd->plane[i].dst.buf = dst_buf[i];
        xd->plane[i].dst.stride = dst_stride[i];
986
        av1_build_masked_inter_predictor_complex(
987 988 989
            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);
990 991
      }
      for (i = 0; i < MAX_MB_PLANE; i++) {
992
        av1_build_masked_inter_predictor_complex(
993 994 995
            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);
996 997 998 999 1000 1001 1002 1003 1004 1005
      }
      break;
    case PARTITION_VERT_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);

1006 1007 1008
      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_buf1,
                           dst_stride1, top_bsize, bsize2, 0, 0);
1009 1010 1011
      dec_extend_all(pbi, xd, tile, 0, bsize2, top_bsize, mi_row + hbs, mi_col,
                     mi_row_top, mi_col_top, dst_buf1, dst_stride1);

1012 1013 1014
      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_buf2,
                           dst_stride2, top_bsize, subsize, 0, 0);