encodeframe.c 263 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 15
 */

#include <limits.h>
#include <math.h>
#include <stdio.h>

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

Yaowu Xu's avatar
Yaowu Xu committed
20
#include "aom_dsp/aom_dsp_common.h"
21
#include "aom_dsp/binary_codes_writer.h"
22
#include "aom_ports/mem.h"
Yaowu Xu's avatar
Yaowu Xu committed
23
#include "aom_ports/aom_timer.h"
24
#include "aom_ports/system_state.h"
Jingning Han's avatar
Jingning Han committed
25

26 27 28 29
#include "av1/common/common.h"
#include "av1/common/entropy.h"
#include "av1/common/entropymode.h"
#include "av1/common/idct.h"
30
#include "av1/common/mv.h"
31 32 33 34 35 36 37
#include "av1/common/mvref_common.h"
#include "av1/common/pred_common.h"
#include "av1/common/quant_common.h"
#include "av1/common/reconintra.h"
#include "av1/common/reconinter.h"
#include "av1/common/seg_common.h"
#include "av1/common/tile_common.h"
Jingning Han's avatar
Jingning Han committed
38

39 40 41
#include "av1/encoder/aq_complexity.h"
#include "av1/encoder/aq_cyclicrefresh.h"
#include "av1/encoder/aq_variance.h"
42
#if CONFIG_SUPERTX
43
#include "av1/encoder/cost.h"
44
#endif
Yue Chen's avatar
Yue Chen committed
45
#if CONFIG_GLOBAL_MOTION || CONFIG_WARPED_MOTION
46
#include "av1/common/warped_motion.h"
Yue Chen's avatar
Yue Chen committed
47 48
#endif  // CONFIG_GLOBAL_MOTION || CONFIG_WARPED_MOTION
#if CONFIG_GLOBAL_MOTION
49
#include "av1/encoder/global_motion.h"
Yue Chen's avatar
Yue Chen committed
50
#endif  // CONFIG_GLOBAL_MOTION
51 52 53
#include "av1/encoder/encodeframe.h"
#include "av1/encoder/encodemb.h"
#include "av1/encoder/encodemv.h"
Angie Chiang's avatar
Angie Chiang committed
54 55 56
#if CONFIG_LV_MAP
#include "av1/encoder/encodetxb.h"
#endif
57 58 59 60 61 62
#include "av1/encoder/ethread.h"
#include "av1/encoder/extend.h"
#include "av1/encoder/rd.h"
#include "av1/encoder/rdopt.h"
#include "av1/encoder/segmentation.h"
#include "av1/encoder/tokenize.h"
63
#if CONFIG_PVQ
64
#include "av1/common/pvq.h"
65 66
#include "av1/encoder/pvq_encoder.h"
#endif
Yaowu Xu's avatar
Yaowu Xu committed
67
#if CONFIG_AOM_HIGHBITDEPTH
68
#define IF_HBD(...) __VA_ARGS__
69
#else
70
#define IF_HBD(...)
Yaowu Xu's avatar
Yaowu Xu committed
71
#endif  // CONFIG_AOM_HIGHBITDEPTH
72

73 74 75 76
static void encode_superblock(const AV1_COMP *const cpi, ThreadData *td,
                              TOKENEXTRA **t, RUN_TYPE dry_run, int mi_row,
                              int mi_col, BLOCK_SIZE bsize,
                              PICK_MODE_CONTEXT *ctx, int *rate);
Jingning Han's avatar
Jingning Han committed
77

78 79 80
#if CONFIG_SUPERTX
static int check_intra_b(PICK_MODE_CONTEXT *ctx);

81 82 83 84
static int check_intra_sb(const AV1_COMP *cpi, const TileInfo *const tile,
                          int mi_row, int mi_col, BLOCK_SIZE bsize,
                          PC_TREE *pc_tree);
static void predict_superblock(const AV1_COMP *const cpi, ThreadData *td,
85 86 87
#if CONFIG_EXT_INTER
                               int mi_row_ori, int mi_col_ori,
#endif  // CONFIG_EXT_INTER
88 89 90 91
                               int mi_row_pred, int mi_col_pred,
                               BLOCK_SIZE bsize_pred, int b_sub8x8, int block);
static int check_supertx_sb(BLOCK_SIZE bsize, TX_SIZE supertx_size,
                            PC_TREE *pc_tree);
92
static void predict_sb_complex(const AV1_COMP *const cpi, ThreadData *td,
93 94
                               const TileInfo *const tile, int mi_row,
                               int mi_col, int mi_row_ori, int mi_col_ori,
95
                               RUN_TYPE dry_run, BLOCK_SIZE bsize,
96 97
                               BLOCK_SIZE top_bsize, uint8_t *dst_buf[3],
                               int dst_stride[3], PC_TREE *pc_tree);
98
static void update_state_sb_supertx(const AV1_COMP *const cpi, ThreadData *td,
99 100
                                    const TileInfo *const tile, int mi_row,
                                    int mi_col, BLOCK_SIZE bsize,
101
                                    RUN_TYPE dry_run, PC_TREE *pc_tree);
102
static void rd_supertx_sb(const AV1_COMP *const cpi, ThreadData *td,
103 104 105
                          const TileInfo *const tile, int mi_row, int mi_col,
                          BLOCK_SIZE bsize, int *tmp_rate, int64_t *tmp_dist,
                          TX_TYPE *best_tx, PC_TREE *pc_tree);
106 107
#endif  // CONFIG_SUPERTX

Jingning Han's avatar
Jingning Han committed
108 109 110 111
// This is used as a reference when computing the source variance for the
//  purposes of activity masking.
// Eventually this should be replaced by custom no-reference routines,
//  which will be faster.
Yaowu Xu's avatar
Yaowu Xu committed
112
static const uint8_t AV1_VAR_OFFS[MAX_SB_SIZE] = {
113 114 115 116 117
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
118
#if CONFIG_EXT_PARTITION
119 120 121 122 123
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128
124
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
125 126
};

Yaowu Xu's avatar
Yaowu Xu committed
127 128
#if CONFIG_AOM_HIGHBITDEPTH
static const uint16_t AV1_HIGH_VAR_OFFS_8[MAX_SB_SIZE] = {
129 130 131 132 133
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
134
#if CONFIG_EXT_PARTITION
135 136 137 138 139
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128
140
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
141 142
};

Yaowu Xu's avatar
Yaowu Xu committed
143
static const uint16_t AV1_HIGH_VAR_OFFS_10[MAX_SB_SIZE] = {
144 145 146 147 148 149 150 151
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
152
#if CONFIG_EXT_PARTITION
153 154 155 156 157 158 159 160
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4,
  128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4, 128 * 4
161
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
162 163
};

Yaowu Xu's avatar
Yaowu Xu committed
164
static const uint16_t AV1_HIGH_VAR_OFFS_12[MAX_SB_SIZE] = {
165 166 167 168 169 170 171 172 173 174
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16,
175
#if CONFIG_EXT_PARTITION
176 177 178 179 180 181 182 183 184 185
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16, 128 * 16,
  128 * 16
186
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
187
};
Yaowu Xu's avatar
Yaowu Xu committed
188
#endif  // CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
189

190
unsigned int av1_get_sby_perpixel_variance(const AV1_COMP *cpi,
Yaowu Xu's avatar
Yaowu Xu committed
191 192
                                           const struct buf_2d *ref,
                                           BLOCK_SIZE bs) {
Jingning Han's avatar
Jingning Han committed
193
  unsigned int sse;
194
  const unsigned int var =
Yaowu Xu's avatar
Yaowu Xu committed
195
      cpi->fn_ptr[bs].vf(ref->buf, ref->stride, AV1_VAR_OFFS, 0, &sse);
Jingning Han's avatar
Jingning Han committed
196 197 198
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}

Yaowu Xu's avatar
Yaowu Xu committed
199
#if CONFIG_AOM_HIGHBITDEPTH
200
unsigned int av1_high_get_sby_perpixel_variance(const AV1_COMP *cpi,
Yaowu Xu's avatar
Yaowu Xu committed
201 202
                                                const struct buf_2d *ref,
                                                BLOCK_SIZE bs, int bd) {
Jingning Han's avatar
Jingning Han committed
203 204 205
  unsigned int var, sse;
  switch (bd) {
    case 10:
Yaowu Xu's avatar
Yaowu Xu committed
206 207 208
      var =
          cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                             CONVERT_TO_BYTEPTR(AV1_HIGH_VAR_OFFS_10), 0, &sse);
Jingning Han's avatar
Jingning Han committed
209 210
      break;
    case 12:
Yaowu Xu's avatar
Yaowu Xu committed
211 212 213
      var =
          cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                             CONVERT_TO_BYTEPTR(AV1_HIGH_VAR_OFFS_12), 0, &sse);
Jingning Han's avatar
Jingning Han committed
214 215 216
      break;
    case 8:
    default:
217 218
      var =
          cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
Yaowu Xu's avatar
Yaowu Xu committed
219
                             CONVERT_TO_BYTEPTR(AV1_HIGH_VAR_OFFS_8), 0, &sse);
Jingning Han's avatar
Jingning Han committed
220 221 222 223
      break;
  }
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}
Yaowu Xu's avatar
Yaowu Xu committed
224
#endif  // CONFIG_AOM_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
225

226
static unsigned int get_sby_perpixel_diff_variance(const AV1_COMP *const cpi,
Jingning Han's avatar
Jingning Han committed
227 228 229 230 231 232 233 234 235 236 237 238 239 240
                                                   const struct buf_2d *ref,
                                                   int mi_row, int mi_col,
                                                   BLOCK_SIZE bs) {
  unsigned int sse, var;
  uint8_t *last_y;
  const YV12_BUFFER_CONFIG *last = get_ref_frame_buffer(cpi, LAST_FRAME);

  assert(last != NULL);
  last_y =
      &last->y_buffer[mi_row * MI_SIZE * last->y_stride + mi_col * MI_SIZE];
  var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride, last_y, last->y_stride, &sse);
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}

Yaowu Xu's avatar
Yaowu Xu committed
241 242
static BLOCK_SIZE get_rd_var_based_fixed_partition(AV1_COMP *cpi, MACROBLOCK *x,
                                                   int mi_row, int mi_col) {
243 244
  unsigned int var = get_sby_perpixel_diff_variance(
      cpi, &x->plane[0].src, mi_row, mi_col, BLOCK_64X64);
Jingning Han's avatar
Jingning Han committed
245 246 247 248 249 250 251 252 253 254 255 256
  if (var < 8)
    return BLOCK_64X64;
  else if (var < 128)
    return BLOCK_32X32;
  else if (var < 2048)
    return BLOCK_16X16;
  else
    return BLOCK_8X8;
}

// Lighter version of set_offsets that only sets the mode info
// pointers.
257 258 259 260
static void set_mode_info_offsets(const AV1_COMP *const cpi,
                                  MACROBLOCK *const x, MACROBLOCKD *const xd,
                                  int mi_row, int mi_col) {
  const AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
261 262 263
  const int idx_str = xd->mi_stride * mi_row + mi_col;
  xd->mi = cm->mi_grid_visible + idx_str;
  xd->mi[0] = cm->mi + idx_str;
264
  x->mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col);
Jingning Han's avatar
Jingning Han committed
265 266
}

267
static void set_offsets_without_segment_id(const AV1_COMP *const cpi,
268
                                           const TileInfo *const tile,
269 270
                                           MACROBLOCK *const x, int mi_row,
                                           int mi_col, BLOCK_SIZE bsize) {
271
  const AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
272
  MACROBLOCKD *const xd = &x->e_mbd;
273 274
  const int mi_width = mi_size_wide[bsize];
  const int mi_height = mi_size_high[bsize];
Jingning Han's avatar
Jingning Han committed
275 276 277

  set_skip_context(xd, mi_row, mi_col);

278
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
279

280 281
#if CONFIG_VAR_TX
  xd->above_txfm_context = cm->above_txfm_context + mi_col;
282
  xd->left_txfm_context =
283
      xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK);
284
  xd->max_tx_size = max_txsize_lookup[bsize];
285 286
#endif

Jingning Han's avatar
Jingning Han committed
287
  // Set up destination pointers.
Yaowu Xu's avatar
Yaowu Xu committed
288
  av1_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
289 290 291

  // Set up limit values for MV components.
  // Mv beyond the range do not produce new/different prediction block.
Yaowu Xu's avatar
Yaowu Xu committed
292 293 294 295
  x->mv_row_min = -(((mi_row + mi_height) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_col_min = -(((mi_col + mi_width) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_row_max = (cm->mi_rows - mi_row) * MI_SIZE + AOM_INTERP_EXTEND;
  x->mv_col_max = (cm->mi_cols - mi_col) * MI_SIZE + AOM_INTERP_EXTEND;
Jingning Han's avatar
Jingning Han committed
296

Jingning Han's avatar
Jingning Han committed
297
  set_plane_n4(xd, mi_width, mi_height);
298

Jingning Han's avatar
Jingning Han committed
299 300
  // Set up distance of MB to edge of frame in 1/8th pel units.
  assert(!(mi_col & (mi_width - 1)) && !(mi_row & (mi_height - 1)));
301 302 303 304
#if CONFIG_DEPENDENT_HORZTILES
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows,
                 cm->mi_cols, cm->dependent_horz_tiles);
#else
305 306
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows,
                 cm->mi_cols);
307
#endif
Jingning Han's avatar
Jingning Han committed
308 309

  // Set up source buffers.
Yaowu Xu's avatar
Yaowu Xu committed
310
  av1_setup_src_planes(x, cpi->Source, mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
311 312 313 314 315

  // R/D setup.
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;

Yaowu Xu's avatar
Yaowu Xu committed
316
  // required by av1_append_sub8x8_mvs_for_idx() and av1_find_best_ref_mvs()
317 318 319
  xd->tile = *tile;
}

320
static void set_offsets(const AV1_COMP *const cpi, const TileInfo *const tile,
321 322
                        MACROBLOCK *const x, int mi_row, int mi_col,
                        BLOCK_SIZE bsize) {
323
  const AV1_COMMON *const cm = &cpi->common;
324 325 326 327 328 329 330 331
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *mbmi;
  const struct segmentation *const seg = &cm->seg;

  set_offsets_without_segment_id(cpi, tile, x, mi_row, mi_col, bsize);

  mbmi = &xd->mi[0]->mbmi;

Jingning Han's avatar
Jingning Han committed
332 333
  // Setup segment ID.
  if (seg->enabled) {
Geza Lore's avatar
Geza Lore committed
334
    if (!cpi->vaq_refresh) {
335 336
      const uint8_t *const map =
          seg->update_map ? cpi->segmentation_map : cm->last_frame_seg_map;
Jingning Han's avatar
Jingning Han committed
337 338
      mbmi->segment_id = get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
Yaowu Xu's avatar
Yaowu Xu committed
339
    av1_init_plane_quantizers(cpi, x, mbmi->segment_id);
Jingning Han's avatar
Jingning Han committed
340 341 342
  } else {
    mbmi->segment_id = 0;
  }
343 344 345 346

#if CONFIG_SUPERTX
  mbmi->segment_id_supertx = MAX_SEGMENTS;
#endif  // CONFIG_SUPERTX
Jingning Han's avatar
Jingning Han committed
347 348
}

349
#if CONFIG_SUPERTX
350
static void set_offsets_supertx(const AV1_COMP *const cpi, ThreadData *td,
351 352
                                const TileInfo *const tile, int mi_row,
                                int mi_col, BLOCK_SIZE bsize) {
353
  MACROBLOCK *const x = &td->mb;
354
  const AV1_COMMON *const cm = &cpi->common;
355
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
356 357
  const int mi_width = mi_size_wide[bsize];
  const int mi_height = mi_size_high[bsize];
358 359 360
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col, cm->dependent_horz_tiles);
#else
361
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col);
362
#endif
363 364 365

  // Set up distance of MB to edge of frame in 1/8th pel units.
  assert(!(mi_col & (mi_width - 1)) && !(mi_row & (mi_height - 1)));
366 367
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows,
                 cm->mi_cols);
368 369
}

370
static void set_offsets_extend(const AV1_COMP *const cpi, ThreadData *td,
371 372
                               const TileInfo *const tile, int mi_row_pred,
                               int mi_col_pred, int mi_row_ori, int mi_col_ori,
373
                               BLOCK_SIZE bsize_pred) {
374 375 376 377
  // Used in supertx
  // (mi_row_ori, mi_col_ori, bsize_ori): region for mv
  // (mi_row_pred, mi_col_pred, bsize_pred): region to predict
  MACROBLOCK *const x = &td->mb;
378
  const AV1_COMMON *const cm = &cpi->common;
379
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
380 381
  const int mi_width = mi_size_wide[bsize_pred];
  const int mi_height = mi_size_high[bsize_pred];
382

383 384 385 386
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori,
                        cm->dependent_horz_tiles);
#else
387
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori);
388
#endif
389 390 391

  // Set up limit values for MV components.
  // Mv beyond the range do not produce new/different prediction block.
Yaowu Xu's avatar
Yaowu Xu committed
392 393 394 395
  x->mv_row_min = -(((mi_row_pred + mi_height) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_col_min = -(((mi_col_pred + mi_width) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_row_max = (cm->mi_rows - mi_row_pred) * MI_SIZE + AOM_INTERP_EXTEND;
  x->mv_col_max = (cm->mi_cols - mi_col_pred) * MI_SIZE + AOM_INTERP_EXTEND;
396

Jingning Han's avatar
Jingning Han committed
397 398
// Set up distance of MB to edge of frame in 1/8th pel units.
#if !CONFIG_CB4X4
Jingning Han's avatar
Jingning Han committed
399 400
  assert(!(mi_col_pred & (mi_width - mi_size_wide[BLOCK_8X8])) &&
         !(mi_row_pred & (mi_height - mi_size_high[BLOCK_8X8])));
Jingning Han's avatar
Jingning Han committed
401
#endif
402 403
  set_mi_row_col(xd, tile, mi_row_pred, mi_height, mi_col_pred, mi_width,
                 cm->mi_rows, cm->mi_cols);
404 405
  xd->up_available = (mi_row_ori > tile->mi_row_start);
  xd->left_available = (mi_col_ori > tile->mi_col_start);
406 407 408 409

  // R/D setup.
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;
410
}
411

Yaowu Xu's avatar
Yaowu Xu committed
412
static void set_segment_id_supertx(const AV1_COMP *const cpi,
413 414
                                   MACROBLOCK *const x, const int mi_row,
                                   const int mi_col, const BLOCK_SIZE bsize) {
Yaowu Xu's avatar
Yaowu Xu committed
415
  const AV1_COMMON *cm = &cpi->common;
416
  const struct segmentation *seg = &cm->seg;
Jingning Han's avatar
Jingning Han committed
417 418
  const int miw = AOMMIN(mi_size_wide[bsize], cm->mi_cols - mi_col);
  const int mih = AOMMIN(mi_size_high[bsize], cm->mi_rows - mi_row);
419 420 421 422
  const int mi_offset = mi_row * cm->mi_stride + mi_col;
  MODE_INFO **const mip = cm->mi_grid_visible + mi_offset;
  int r, c;
  int seg_id_supertx = MAX_SEGMENTS;
423

424 425 426 427
  if (!seg->enabled) {
    seg_id_supertx = 0;
  } else {
    // Find the minimum segment_id
428 429 430
    for (r = 0; r < mih; r++)
      for (c = 0; c < miw; c++)
        seg_id_supertx =
Yaowu Xu's avatar
Yaowu Xu committed
431
            AOMMIN(mip[r * cm->mi_stride + c]->mbmi.segment_id, seg_id_supertx);
432 433 434
    assert(0 <= seg_id_supertx && seg_id_supertx < MAX_SEGMENTS);

    // Initialize plane quantisers
Yaowu Xu's avatar
Yaowu Xu committed
435
    av1_init_plane_quantizers(cpi, x, seg_id_supertx);
436
  }
437 438

  // Assign the the segment_id back to segment_id_supertx
439 440
  for (r = 0; r < mih; r++)
    for (c = 0; c < miw; c++)
441
      mip[r * cm->mi_stride + c]->mbmi.segment_id_supertx = seg_id_supertx;
442 443 444
}
#endif  // CONFIG_SUPERTX

Yaowu Xu's avatar
Yaowu Xu committed
445
static void set_block_size(AV1_COMP *const cpi, MACROBLOCK *const x,
446
                           MACROBLOCKD *const xd, int mi_row, int mi_col,
Jingning Han's avatar
Jingning Han committed
447 448
                           BLOCK_SIZE bsize) {
  if (cpi->common.mi_cols > mi_col && cpi->common.mi_rows > mi_row) {
449 450 451 452 453 454 455 456
    const int mi_width = AOMMAX(mi_size_wide[bsize], mi_size_wide[BLOCK_8X8]);
    const int mi_height = AOMMAX(mi_size_high[bsize], mi_size_high[BLOCK_8X8]);
    for (int r = 0; r < mi_height; ++r) {
      for (int c = 0; c < mi_width; ++c) {
        set_mode_info_offsets(cpi, x, xd, mi_row + r, mi_col + c);
        xd->mi[0]->mbmi.sb_type = bsize;
      }
    }
Jingning Han's avatar
Jingning Han committed
457 458 459
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
460
static void set_vt_partitioning(AV1_COMP *cpi, MACROBLOCK *const x,
461 462 463
                                MACROBLOCKD *const xd, VAR_TREE *vt, int mi_row,
                                int mi_col, const int64_t *const threshold,
                                const BLOCK_SIZE *const bsize_min) {
Yaowu Xu's avatar
Yaowu Xu committed
464
  AV1_COMMON *const cm = &cpi->common;
465 466
  const int hbw = mi_size_wide[vt->bsize] / 2;
  const int hbh = mi_size_high[vt->bsize] / 2;
467 468
  const int has_cols = mi_col + hbw < cm->mi_cols;
  const int has_rows = mi_row + hbh < cm->mi_rows;
Jingning Han's avatar
Jingning Han committed
469

470
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
Jingning Han's avatar
Jingning Han committed
471

472 473 474 475
  assert(vt->bsize >= BLOCK_8X8);

  assert(hbh == hbw);

476 477 478 479 480
  if (vt->bsize == BLOCK_8X8 && cm->frame_type != KEY_FRAME) {
    set_block_size(cpi, x, xd, mi_row, mi_col, BLOCK_8X8);
    return;
  }

481
  if (vt->force_split || (!has_cols && !has_rows)) goto split;
Jingning Han's avatar
Jingning Han committed
482 483 484 485

  // For bsize=bsize_min (16x16/8x8 for 8x8/4x4 downsampling), select if
  // variance is below threshold, otherwise split will be selected.
  // No check for vert/horiz split as too few samples for variance.
486
  if (vt->bsize == bsize_min[0]) {
487
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
488 489 490 491 492 493 494 495 496 497 498
      set_block_size(cpi, x, xd, mi_row, mi_col, vt->bsize);
      return;
    } else {
      BLOCK_SIZE subsize = get_subsize(vt->bsize, PARTITION_SPLIT);
      set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
      if (vt->bsize > BLOCK_8X8) {
        set_block_size(cpi, x, xd, mi_row, mi_col + hbw, subsize);
        set_block_size(cpi, x, xd, mi_row + hbh, mi_col, subsize);
        set_block_size(cpi, x, xd, mi_row + hbh, mi_col + hbw, subsize);
      }
      return;
Jingning Han's avatar
Jingning Han committed
499
    }
500
  } else if (vt->bsize > bsize_min[0]) {
Jingning Han's avatar
Jingning Han committed
501 502
    // For key frame: take split for bsize above 32X32 or very high variance.
    if (cm->frame_type == KEY_FRAME &&
503
        (vt->bsize > BLOCK_32X32 ||
504
         vt->variances.none.variance > (threshold[0] << 4))) {
505
      goto split;
Jingning Han's avatar
Jingning Han committed
506 507
    }
    // If variance is low, take the bsize (no split).
508
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
509 510
      set_block_size(cpi, x, xd, mi_row, mi_col, vt->bsize);
      return;
Jingning Han's avatar
Jingning Han committed
511 512 513
    }

    // Check vertical split.
514 515 516 517
    if (has_rows) {
      BLOCK_SIZE subsize = get_subsize(vt->bsize, PARTITION_VERT);
      if (vt->variances.vert[0].variance < threshold[0] &&
          vt->variances.vert[1].variance < threshold[0] &&
Jingning Han's avatar
Jingning Han committed
518 519
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
520 521
        set_block_size(cpi, x, xd, mi_row, mi_col + hbw, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
522 523 524
      }
    }
    // Check horizontal split.
525 526 527 528
    if (has_cols) {
      BLOCK_SIZE subsize = get_subsize(vt->bsize, PARTITION_HORZ);
      if (vt->variances.horz[0].variance < threshold[0] &&
          vt->variances.horz[1].variance < threshold[0] &&
Jingning Han's avatar
Jingning Han committed
529 530
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
531 532
        set_block_size(cpi, x, xd, mi_row + hbh, mi_col, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
533 534
      }
    }
535
  }
Jingning Han's avatar
Jingning Han committed
536

537 538 539 540 541 542 543 544 545 546 547
split : {
  set_vt_partitioning(cpi, x, xd, vt->split[0], mi_row, mi_col, threshold + 1,
                      bsize_min + 1);
  set_vt_partitioning(cpi, x, xd, vt->split[1], mi_row, mi_col + hbw,
                      threshold + 1, bsize_min + 1);
  set_vt_partitioning(cpi, x, xd, vt->split[2], mi_row + hbh, mi_col,
                      threshold + 1, bsize_min + 1);
  set_vt_partitioning(cpi, x, xd, vt->split[3], mi_row + hbh, mi_col + hbw,
                      threshold + 1, bsize_min + 1);
  return;
}
Jingning Han's avatar
Jingning Han committed
548 549 550 551 552 553
}

// Set the variance split thresholds for following the block sizes:
// 0 - threshold_64x64, 1 - threshold_32x32, 2 - threshold_16x16,
// 3 - vbp_threshold_8x8. vbp_threshold_8x8 (to split to 4x4 partition) is
// currently only used on key frame.
Yaowu Xu's avatar
Yaowu Xu committed
554 555
static void set_vbp_thresholds(AV1_COMP *cpi, int64_t thresholds[], int q) {
  AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
556 557
  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  const int threshold_multiplier = is_key_frame ? 20 : 1;
558 559
  const int64_t threshold_base =
      (int64_t)(threshold_multiplier * cpi->y_dequant[q][1]);
Jingning Han's avatar
Jingning Han committed
560
  if (is_key_frame) {
561
    thresholds[1] = threshold_base;
Jingning Han's avatar
Jingning Han committed
562
    thresholds[2] = threshold_base >> 2;
563 564
    thresholds[3] = threshold_base >> 2;
    thresholds[4] = threshold_base << 2;
Jingning Han's avatar
Jingning Han committed
565
  } else {
566
    thresholds[2] = threshold_base;
Jingning Han's avatar
Jingning Han committed
567
    if (cm->width <= 352 && cm->height <= 288) {
568 569
      thresholds[1] = threshold_base >> 2;
      thresholds[3] = threshold_base << 3;
Jingning Han's avatar
Jingning Han committed
570
    } else {
571 572
      thresholds[1] = threshold_base;
      thresholds[2] = (5 * threshold_base) >> 2;
Jingning Han's avatar
Jingning Han committed
573
      if (cm->width >= 1920 && cm->height >= 1080)
574 575
        thresholds[2] = (7 * threshold_base) >> 2;
      thresholds[3] = threshold_base << cpi->oxcf.speed;
Jingning Han's avatar
Jingning Han committed
576 577
    }
  }
578
  thresholds[0] = INT64_MIN;
Jingning Han's avatar
Jingning Han committed
579 580
}

Yaowu Xu's avatar
Yaowu Xu committed
581 582
void av1_set_variance_partition_thresholds(AV1_COMP *cpi, int q) {
  AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
583 584 585 586 587 588 589 590 591 592 593 594 595 596 597
  SPEED_FEATURES *const sf = &cpi->sf;
  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  if (sf->partition_search_type != VAR_BASED_PARTITION &&
      sf->partition_search_type != REFERENCE_PARTITION) {
    return;
  } else {
    set_vbp_thresholds(cpi, cpi->vbp_thresholds, q);
    // The thresholds below are not changed locally.
    if (is_key_frame) {
      cpi->vbp_threshold_sad = 0;
      cpi->vbp_bsize_min = BLOCK_8X8;
    } else {
      if (cm->width <= 352 && cm->height <= 288)
        cpi->vbp_threshold_sad = 100;
      else
598 599 600
        cpi->vbp_threshold_sad = (cpi->y_dequant[q][1] << 1) > 1000
                                     ? (cpi->y_dequant[q][1] << 1)
                                     : 1000;
Jingning Han's avatar
Jingning Han committed
601 602 603 604 605 606 607
      cpi->vbp_bsize_min = BLOCK_16X16;
    }
    cpi->vbp_threshold_minmax = 15 + (q >> 3);
  }
}

// Compute the minmax over the 8x8 subblocks.
608 609
static int compute_minmax_8x8(const uint8_t *src, int src_stride,
                              const uint8_t *ref, int ref_stride,
Yaowu Xu's avatar
Yaowu Xu committed
610
#if CONFIG_AOM_HIGHBITDEPTH
611
                              int highbd,
Jingning Han's avatar
Jingning Han committed
612
#endif
613
                              int pixels_wide, int pixels_high) {
Jingning Han's avatar
Jingning Han committed
614 615 616 617 618
  int k;
  int minmax_max = 0;
  int minmax_min = 255;
  // Loop over the 4 8x8 subblocks.
  for (k = 0; k < 4; k++) {
619 620
    const int x8_idx = ((k & 1) << 3);
    const int y8_idx = ((k >> 1) << 3);
Jingning Han's avatar
Jingning Han committed
621 622 623
    int min = 0;
    int max = 0;
    if (x8_idx < pixels_wide && y8_idx < pixels_high) {
624 625
      const int src_offset = y8_idx * src_stride + x8_idx;
      const int ref_offset = y8_idx * ref_stride + x8_idx;
Yaowu Xu's avatar
Yaowu Xu committed
626
#if CONFIG_AOM_HIGHBITDEPTH
627
      if (highbd) {
Yaowu Xu's avatar
Yaowu Xu committed
628
        aom_highbd_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
629
                              ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
630
      } else {
Yaowu Xu's avatar
Yaowu Xu committed
631
        aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
632
                       ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
633 634
      }
#else
Yaowu Xu's avatar
Yaowu Xu committed
635
      aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset, ref_stride,
Jingning Han's avatar
Jingning Han committed
636 637
                     &min, &max);
#endif
638 639
      if ((max - min) > minmax_max) minmax_max = (max - min);
      if ((max - min) < minmax_min) minmax_min = (max - min);
Jingning Han's avatar
Jingning Han committed
640 641 642 643 644
    }
  }
  return (minmax_max - minmax_min);
}

Yaowu Xu's avatar
Yaowu Xu committed
645
#if CONFIG_AOM_HIGHBITDEPTH
646 647 648
static INLINE int avg_4x4(const uint8_t *const src, const int stride,
                          const int highbd) {
  if (highbd) {
Yaowu Xu's avatar
Yaowu Xu committed
649
    return aom_highbd_avg_4x4(src, stride);
650
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
651
    return aom_avg_4x4(src, stride);
652 653
  }
}
Jingning Han's avatar
Jingning Han committed
654
#else
655
static INLINE int avg_4x4(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
656
  return aom_avg_4x4(src, stride);
657
}
Jingning Han's avatar
Jingning Han committed
658
#endif
659

Yaowu Xu's avatar
Yaowu Xu committed
660
#if CONFIG_AOM_HIGHBITDEPTH
661 662 663
static INLINE int avg_8x8(const uint8_t *const src, const int stride,
                          const int highbd) {
  if (highbd) {
Yaowu Xu's avatar
Yaowu Xu committed
664
    return aom_highbd_avg_8x8(src, stride);
665
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
666
    return aom_avg_8x8(src, stride);
Jingning Han's avatar
Jingning Han committed
667 668
  }
}
669 670
#else
static INLINE int avg_8x8(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
671
  return aom_avg_8x8(src, stride);
672 673
}
#endif
Jingning Han's avatar
Jingning Han committed
674

675
static void init_variance_tree(VAR_TREE *const vt,
Yaowu Xu's avatar
Yaowu Xu committed
676
#if CONFIG_AOM_HIGHBITDEPTH
677
                               const int highbd,
Jingning Han's avatar
Jingning Han committed
678
#endif
679
                               BLOCK_SIZE bsize, BLOCK_SIZE leaf_size,
680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
                               const int width, const int height,
                               const uint8_t *const src, const int src_stride,
                               const uint8_t *const ref, const int ref_stride) {
  assert(bsize >= leaf_size);

  vt->bsize = bsize;

  vt->force_split = 0;

  vt->src = src;
  vt->src_stride = src_stride;
  vt->ref = ref;
  vt->ref_stride = ref_stride;

  vt->width = width;
  vt->height = height;

Yaowu Xu's avatar
Yaowu Xu committed
697
#if CONFIG_AOM_HIGHBITDEPTH
698
  vt->highbd = highbd;
Yaowu Xu's avatar
Yaowu Xu committed
699
#endif  // CONFIG_AOM_HIGHBITDEPTH
700 701 702

  if (bsize > leaf_size) {
    const BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_SPLIT);
703
    const int px = block_size_wide[subsize];
704 705

    init_variance_tree(vt->split[0],
Yaowu Xu's avatar
Yaowu Xu committed
706
#if CONFIG_AOM_HIGHBITDEPTH
707
                       highbd,
Yaowu Xu's avatar
Yaowu Xu committed
708 709 710
#endif  // CONFIG_AOM_HIGHBITDEPTH
                       subsize, leaf_size, AOMMIN(px, width),
                       AOMMIN(px, height), src, src_stride, ref, ref_stride);
711
    init_variance_tree(vt->split[1],
Yaowu Xu's avatar
Yaowu Xu committed
712
#if CONFIG_AOM_HIGHBITDEPTH
713
                       highbd,
Yaowu Xu's avatar
Yaowu Xu committed
714 715
#endif  // CONFIG_AOM_HIGHBITDEPTH
                       subsize, leaf_size, width - px, AOMMIN(px, height),
716
                       src + px, src_stride, ref + px, ref_stride);
717
    init_variance_tree(vt->split[2],
Yaowu Xu's avatar
Yaowu Xu committed
718
#if CONFIG_AOM_HIGHBITDEPTH
719
                       highbd,
Yaowu Xu's avatar
Yaowu Xu committed
720 721
#endif  // CONFIG_AOM_HIGHBITDEPTH
                       subsize, leaf_size, AOMMIN(px, width), height - px,
722 723
                       src + px * src_stride, src_stride, ref + px * ref_stride,
                       ref_stride);
724
    init_variance_tree(vt->split[3],
Yaowu Xu's avatar
Yaowu Xu committed
725
#if CONFIG_AOM_HIGHBITDEPTH
726
                       highbd,
Yaowu Xu's avatar
Yaowu Xu committed
727
#endif  // CONFIG_AOM_HIGHBITDEPTH
728
                       subsize, leaf_size, width - px, height - px,
729 730 731 732 733 734 735
                       src + px * src_stride + px, src_stride,
                       ref + px * ref_stride + px, ref_stride);
  }
}

// Fill the variance tree based on averaging pixel values (sub-sampling), at
// the leaf node size.
736
static void fill_variance_tree(VAR_TREE *const vt, const BLOCK_SIZE leaf_size) {
737 738 739 740 741 742 743 744 745
  if (vt->bsize > leaf_size) {
    fill_variance_tree(vt->split[0], leaf_size);
    fill_variance_tree(vt->split[1], leaf_size);
    fill_variance_tree(vt->split[2], leaf_size);
    fill_variance_tree(vt->split[3], leaf_size);
    fill_variance_node(vt);
  } else if (vt->width <= 0 || vt->height <= 0) {
    fill_variance(0, 0, 0, &vt->variances.none);
  } else {
Jingning Han's avatar
Jingning Han committed
746 747
    unsigned int sse = 0;
    int sum = 0;
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
    int src_avg;
    int ref_avg;
    assert(leaf_size == BLOCK_4X4 || leaf_size == BLOCK_8X8);
    if (leaf_size == BLOCK_4X4) {
      src_avg = avg_4x4(vt->src, vt->src_stride IF_HBD(, vt->highbd));
      ref_avg = avg_4x4(vt->ref, vt->ref_stride IF_HBD(, vt->highbd));
    } else {
      src_avg = avg_8x8(vt->src, vt->src_stride IF_HBD(, vt->highbd));
      ref_avg = avg_8x8(vt->ref, vt->ref_stride IF_HBD(, vt->highbd));
    }
    sum = src_avg - ref_avg;
    sse = sum * sum;
    fill_variance(sse, sum, 0, &vt->variances.none);
  }
}

static void refine_variance_tree(VAR_TREE *const vt, const int64_t threshold) {
  if (vt->bsize >= BLOCK_8X8) {
    if (vt->bsize == BLOCK_16X16) {
      if (vt->variances.none.variance <= threshold)
        return;
      else
        vt->force_split = 0;
    }

    refine_variance_tree(vt->split[0], threshold);
    refine_variance_tree(vt->split[1], threshold);
    refine_variance_tree(vt->split[2], threshold);
    refine_variance_tree(vt->split[3], threshold);

778
    if (vt->bsize <= BLOCK_16X16) fill_variance_node(vt);
779 780 781 782 783 784
  } else if (vt->width <= 0 || vt->height <= 0) {
    fill_variance(0, 0, 0, &vt->variances.none);
  } else {
    const int src_avg = avg_4x4(vt->src, vt->src_stride IF_HBD(, vt->highbd));
    const int ref_avg = avg_4x4(vt->ref, vt->ref_stride IF_HBD(, vt->highbd));
    const int sum = src_avg - ref_avg;
785
    const unsigned int sse = sum * sum;
786 787 788 789 790
    assert(vt->bsize == BLOCK_4X4);
    fill_variance(sse, sum, 0, &vt->variances.none);
  }
}

791
static int check_split_key_frame(VAR_TREE *const vt, const int64_t threshold) {
792 793 794 795 796 797 798 799 800 801 802
  if (vt->bsize == BLOCK_32X32) {
    vt->force_split = vt->variances.none.variance > threshold;
  } else {
    vt->force_split |= check_split_key_frame(vt->split[0], threshold);
    vt->force_split |= check_split_key_frame(vt->split[1], threshold);
    vt->force_split |= check_split_key_frame(vt->split[2], threshold);
    vt->force_split |= check_split_key_frame(vt->split[3], threshold);
  }
  return vt->force_split;
}

Yaowu Xu's avatar
Yaowu Xu committed
803
static int check_split(AV1_COMP *const cpi, VAR_TREE *const vt,
804
                       const int segment_id, const int64_t *const thresholds) {
805 806
  if (vt->bsize == BLOCK_16X16) {
    vt->force_split = vt->variances.none.variance > thresholds[0];
807 808
    if (!vt->force_split && vt->variances.none.variance > thresholds[-1] &&
        !cyclic_refresh_segment_id_boosted(segment_id)) {
809 810 811
      // We have some nominal amount of 16x16 variance (based on average),
      // compute the minmax over the 8x8 sub-blocks, and if above threshold,
      // force split to 8x8 block for this 16x16 block.
812 813
      int minmax =
          compute_minmax_8x8(vt->src, vt->src_stride, vt->ref, vt->ref_stride,
Yaowu Xu's avatar
Yaowu Xu committed
814
#if CONFIG_AOM_HIGHBITDEPTH
815
                             vt->highbd,
Jingning Han's avatar
Jingning Han committed
816
#endif
817
                             vt->width, vt->height);
818 819 820
      vt->force_split = minmax > cpi->vbp_threshold_minmax;
    }
  } else {
821 822 823 824 825 826 827 828
    vt->force_split |=
        check_split(cpi, vt->split[0], segment_id, thresholds + 1);
    vt->force_split |=
        check_split(cpi, vt->split[1], segment_id, thresholds + 1);
    vt->force_split |=
        check_split(cpi, vt->split[2], segment_id, thresholds + 1);
    vt->force_split |=
        check_split(cpi, vt->split[3], segment_id, thresholds + 1);
829 830 831

    if (vt->bsize == BLOCK_32X32 && !vt->force_split) {
      vt->force_split = vt->variances.none.variance > thresholds[0];
Jingning Han's avatar
Jingning Han committed
832 833
    }
  }
834 835

  return vt->force_split;
Jingning Han's avatar
Jingning Han committed
836 837 838
}

// This function chooses partitioning based on the variance between source and
839 840
// reconstructed last (or golden), where variance is computed for down-sampled
// inputs.
Yaowu Xu's avatar
Yaowu Xu committed
841
static void choose_partitioning(AV1_COMP *const cpi, ThreadData *const td,
842
                                const TileInfo *const tile, MACROBLOCK *const x,
843
                                const int mi_row, const int mi_col) {
Yaowu Xu's avatar
Yaowu Xu committed
844
  AV1_COMMON *const cm = &cpi->common;
845 846
  MACROBLOCKD *const xd = &x->e_mbd;
  VAR_TREE *const vt = td->var_root[cm->mib_size_log2 - MIN_MIB_SIZE_LOG2];
847
#if CONFIG_DUAL_FILTER
848
  int i;
849
#endif
850 851 852 853
  const uint8_t *src;
  const uint8_t *ref;
  int src_stride;
  int ref_stride;
854 855
  int pixels_wide = MI_SIZE * mi_size_wide[cm->sb_size];
  int pixels_high = MI_SIZE * mi_size_high[cm->sb_size];
856
  int64_t thresholds[5] = {
857 858
    cpi->vbp_thresholds[0], cpi->vbp_thresholds[1], cpi->vbp_thresholds[2],
    cpi->vbp_thresholds[3], cpi->vbp_thresholds[4],
859
  };
860 861
  BLOCK_SIZE bsize_min[5] = { BLOCK_16X16, BLOCK_16X16, BLOCK_16X16,
                              cpi->vbp_bsize_min, BLOCK_8X8 };
862 863 864
  const int start_level = cm->sb_size == BLOCK_64X64 ? 1 : 0;
  const int64_t *const thre = thresholds + start_level;
  const BLOCK_SIZE *const bmin = bsize_min + start_level;
Jingning Han's avatar
Jingning Han committed
865 866 867 868 869

  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  const int low_res = (cm->width <= 352 && cm->height <= 288);

  int segment_id = CR_SEGMENT_ID_BASE;
870

Jingning Han's avatar
Jingning Han committed
871
  if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cm->seg.enabled) {
872 873
    const uint8_t *const map =
        cm->seg.update_map ? cpi->segmentation_map : cm->last_frame_seg_map;