encodeframe.c 266 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
67
#if CONFIG_HIGHBITDEPTH
68
#define IF_HBD(...) __VA_ARGS__
69
#else
70
#define IF_HBD(...)
71
#endif  // CONFIG_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
};

127
#if CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
128
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
};
188
#endif  // CONFIG_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]);
}

199
#if CONFIG_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]);
}
224
#endif  // CONFIG_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.
Alex Converse's avatar
Alex Converse committed
292 293 294 295 296
  x->mv_limits.row_min =
      -(((mi_row + mi_height) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_limits.col_min = -(((mi_col + mi_width) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_limits.row_max = (cm->mi_rows - mi_row) * MI_SIZE + AOM_INTERP_EXTEND;
  x->mv_limits.col_max = (cm->mi_cols - mi_col) * MI_SIZE + AOM_INTERP_EXTEND;
Jingning Han's avatar
Jingning Han committed
297

Jingning Han's avatar
Jingning Han committed
298
  set_plane_n4(xd, mi_width, mi_height);
299

Jingning Han's avatar
Jingning Han committed
300 301
  // 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)));
302 303 304 305
#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
306 307
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows,
                 cm->mi_cols);
308
#endif
Jingning Han's avatar
Jingning Han committed
309 310

  // Set up source buffers.
311
  av1_setup_src_planes(x, cpi->source, mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
312 313 314 315 316

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

Yaowu Xu's avatar
Yaowu Xu committed
317
  // required by av1_append_sub8x8_mvs_for_idx() and av1_find_best_ref_mvs()
318 319 320
  xd->tile = *tile;
}

321
static void set_offsets(const AV1_COMP *const cpi, const TileInfo *const tile,
322 323
                        MACROBLOCK *const x, int mi_row, int mi_col,
                        BLOCK_SIZE bsize) {
324
  const AV1_COMMON *const cm = &cpi->common;
325 326 327 328 329 330 331 332
  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
333 334
  // Setup segment ID.
  if (seg->enabled) {
Geza Lore's avatar
Geza Lore committed
335
    if (!cpi->vaq_refresh) {
336 337
      const uint8_t *const map =
          seg->update_map ? cpi->segmentation_map : cm->last_frame_seg_map;
Jingning Han's avatar
Jingning Han committed
338 339
      mbmi->segment_id = get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
Yaowu Xu's avatar
Yaowu Xu committed
340
    av1_init_plane_quantizers(cpi, x, mbmi->segment_id);
Jingning Han's avatar
Jingning Han committed
341 342 343
  } else {
    mbmi->segment_id = 0;
  }
344 345 346 347

#if CONFIG_SUPERTX
  mbmi->segment_id_supertx = MAX_SEGMENTS;
#endif  // CONFIG_SUPERTX
Jingning Han's avatar
Jingning Han committed
348 349
}

350
#if CONFIG_SUPERTX
351
static void set_offsets_supertx(const AV1_COMP *const cpi, ThreadData *td,
352 353
                                const TileInfo *const tile, int mi_row,
                                int mi_col, BLOCK_SIZE bsize) {
354
  MACROBLOCK *const x = &td->mb;
355
  const AV1_COMMON *const cm = &cpi->common;
356
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
357 358
  const int mi_width = mi_size_wide[bsize];
  const int mi_height = mi_size_high[bsize];
359 360 361
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col, cm->dependent_horz_tiles);
#else
362
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col);
363
#endif
364 365 366

  // 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)));
367 368
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width, cm->mi_rows,
                 cm->mi_cols);
369 370
}

371
static void set_offsets_extend(const AV1_COMP *const cpi, ThreadData *td,
372 373
                               const TileInfo *const tile, int mi_row_pred,
                               int mi_col_pred, int mi_row_ori, int mi_col_ori,
374
                               BLOCK_SIZE bsize_pred) {
375 376 377 378
  // 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;
379
  const AV1_COMMON *const cm = &cpi->common;
380
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
381 382
  const int mi_width = mi_size_wide[bsize_pred];
  const int mi_height = mi_size_high[bsize_pred];
383

384 385 386 387
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori,
                        cm->dependent_horz_tiles);
#else
388
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori);
389
#endif
390 391 392

  // Set up limit values for MV components.
  // Mv beyond the range do not produce new/different prediction block.
Alex Converse's avatar
Alex Converse committed
393 394 395 396 397 398 399 400
  x->mv_limits.row_min =
      -(((mi_row_pred + mi_height) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_limits.col_min =
      -(((mi_col_pred + mi_width) * MI_SIZE) + AOM_INTERP_EXTEND);
  x->mv_limits.row_max =
      (cm->mi_rows - mi_row_pred) * MI_SIZE + AOM_INTERP_EXTEND;
  x->mv_limits.col_max =
      (cm->mi_cols - mi_col_pred) * MI_SIZE + AOM_INTERP_EXTEND;
401

Jingning Han's avatar
Jingning Han committed
402 403
// Set up distance of MB to edge of frame in 1/8th pel units.
#if !CONFIG_CB4X4
Jingning Han's avatar
Jingning Han committed
404 405
  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
406
#endif
407 408
  set_mi_row_col(xd, tile, mi_row_pred, mi_height, mi_col_pred, mi_width,
                 cm->mi_rows, cm->mi_cols);
409 410
  xd->up_available = (mi_row_ori > tile->mi_row_start);
  xd->left_available = (mi_col_ori > tile->mi_col_start);
411 412 413 414

  // R/D setup.
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;
415
}
416

Yaowu Xu's avatar
Yaowu Xu committed
417
static void set_segment_id_supertx(const AV1_COMP *const cpi,
418 419
                                   MACROBLOCK *const x, const int mi_row,
                                   const int mi_col, const BLOCK_SIZE bsize) {
Yaowu Xu's avatar
Yaowu Xu committed
420
  const AV1_COMMON *cm = &cpi->common;
421
  const struct segmentation *seg = &cm->seg;
Jingning Han's avatar
Jingning Han committed
422 423
  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);
424 425 426 427
  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;
428

429 430 431 432
  if (!seg->enabled) {
    seg_id_supertx = 0;
  } else {
    // Find the minimum segment_id
433 434 435
    for (r = 0; r < mih; r++)
      for (c = 0; c < miw; c++)
        seg_id_supertx =
Yaowu Xu's avatar
Yaowu Xu committed
436
            AOMMIN(mip[r * cm->mi_stride + c]->mbmi.segment_id, seg_id_supertx);
437 438 439
    assert(0 <= seg_id_supertx && seg_id_supertx < MAX_SEGMENTS);

    // Initialize plane quantisers
Yaowu Xu's avatar
Yaowu Xu committed
440
    av1_init_plane_quantizers(cpi, x, seg_id_supertx);
441
  }
442 443

  // Assign the the segment_id back to segment_id_supertx
444 445
  for (r = 0; r < mih; r++)
    for (c = 0; c < miw; c++)
446
      mip[r * cm->mi_stride + c]->mbmi.segment_id_supertx = seg_id_supertx;
447 448 449
}
#endif  // CONFIG_SUPERTX

Yaowu Xu's avatar
Yaowu Xu committed
450
static void set_block_size(AV1_COMP *const cpi, MACROBLOCK *const x,
451
                           MACROBLOCKD *const xd, int mi_row, int mi_col,
Jingning Han's avatar
Jingning Han committed
452 453
                           BLOCK_SIZE bsize) {
  if (cpi->common.mi_cols > mi_col && cpi->common.mi_rows > mi_row) {
454 455 456 457 458 459 460 461
    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
462 463 464
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
465
static void set_vt_partitioning(AV1_COMP *cpi, MACROBLOCK *const x,
466 467 468
                                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
469
  AV1_COMMON *const cm = &cpi->common;
470 471
  const int hbw = mi_size_wide[vt->bsize] / 2;
  const int hbh = mi_size_high[vt->bsize] / 2;
472 473
  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
474

475
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
Jingning Han's avatar
Jingning Han committed
476

477 478 479 480
  assert(vt->bsize >= BLOCK_8X8);

  assert(hbh == hbw);

481 482 483 484 485
  if (vt->bsize == BLOCK_8X8 && cm->frame_type != KEY_FRAME) {
    set_block_size(cpi, x, xd, mi_row, mi_col, BLOCK_8X8);
    return;
  }

486
  if (vt->force_split || (!has_cols && !has_rows)) goto split;
Jingning Han's avatar
Jingning Han committed
487 488 489 490

  // 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.
491
  if (vt->bsize == bsize_min[0]) {
492
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
493 494 495 496 497 498 499 500 501 502 503
      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
504
    }
505
  } else if (vt->bsize > bsize_min[0]) {
Jingning Han's avatar
Jingning Han committed
506 507
    // For key frame: take split for bsize above 32X32 or very high variance.
    if (cm->frame_type == KEY_FRAME &&
508
        (vt->bsize > BLOCK_32X32 ||
509
         vt->variances.none.variance > (threshold[0] << 4))) {
510
      goto split;
Jingning Han's avatar
Jingning Han committed
511 512
    }
    // If variance is low, take the bsize (no split).
513
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
514 515
      set_block_size(cpi, x, xd, mi_row, mi_col, vt->bsize);
      return;
Jingning Han's avatar
Jingning Han committed
516 517 518
    }

    // Check vertical split.
519 520 521 522
    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
523 524
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
525 526
        set_block_size(cpi, x, xd, mi_row, mi_col + hbw, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
527 528 529
      }
    }
    // Check horizontal split.
530 531 532 533
    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
534 535
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
536 537
        set_block_size(cpi, x, xd, mi_row + hbh, mi_col, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
538 539
      }
    }
540
  }
Jingning Han's avatar
Jingning Han committed
541

542 543 544 545 546 547 548 549 550 551 552
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
553 554 555 556 557 558
}

// 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
559 560
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
561 562
  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  const int threshold_multiplier = is_key_frame ? 20 : 1;
563 564
  const int64_t threshold_base =
      (int64_t)(threshold_multiplier * cpi->y_dequant[q][1]);
Jingning Han's avatar
Jingning Han committed
565
  if (is_key_frame) {
566
    thresholds[1] = threshold_base;
Jingning Han's avatar
Jingning Han committed
567
    thresholds[2] = threshold_base >> 2;
568 569
    thresholds[3] = threshold_base >> 2;
    thresholds[4] = threshold_base << 2;
Jingning Han's avatar
Jingning Han committed
570
  } else {
571
    thresholds[2] = threshold_base;
Jingning Han's avatar
Jingning Han committed
572
    if (cm->width <= 352 && cm->height <= 288) {
573 574
      thresholds[1] = threshold_base >> 2;
      thresholds[3] = threshold_base << 3;
Jingning Han's avatar
Jingning Han committed
575
    } else {
576 577
      thresholds[1] = threshold_base;
      thresholds[2] = (5 * threshold_base) >> 2;
Jingning Han's avatar
Jingning Han committed
578
      if (cm->width >= 1920 && cm->height >= 1080)
579 580
        thresholds[2] = (7 * threshold_base) >> 2;
      thresholds[3] = threshold_base << cpi->oxcf.speed;
Jingning Han's avatar
Jingning Han committed
581 582
    }
  }
583
  thresholds[0] = INT64_MIN;
Jingning Han's avatar
Jingning Han committed
584 585
}

Yaowu Xu's avatar
Yaowu Xu committed
586 587
void av1_set_variance_partition_thresholds(AV1_COMP *cpi, int q) {
  AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
588 589 590 591 592 593 594 595 596 597 598 599 600 601 602
  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
603 604 605
        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
606 607 608 609 610 611 612
      cpi->vbp_bsize_min = BLOCK_16X16;
    }
    cpi->vbp_threshold_minmax = 15 + (q >> 3);
  }
}

// Compute the minmax over the 8x8 subblocks.
613 614
static int compute_minmax_8x8(const uint8_t *src, int src_stride,
                              const uint8_t *ref, int ref_stride,
615
#if CONFIG_HIGHBITDEPTH
616
                              int highbd,
Jingning Han's avatar
Jingning Han committed
617
#endif
618
                              int pixels_wide, int pixels_high) {
Jingning Han's avatar
Jingning Han committed
619 620 621 622 623
  int k;
  int minmax_max = 0;
  int minmax_min = 255;
  // Loop over the 4 8x8 subblocks.
  for (k = 0; k < 4; k++) {
624 625
    const int x8_idx = ((k & 1) << 3);
    const int y8_idx = ((k >> 1) << 3);
Jingning Han's avatar
Jingning Han committed
626 627 628
    int min = 0;
    int max = 0;
    if (x8_idx < pixels_wide && y8_idx < pixels_high) {
629 630
      const int src_offset = y8_idx * src_stride + x8_idx;
      const int ref_offset = y8_idx * ref_stride + x8_idx;
631
#if CONFIG_HIGHBITDEPTH
632
      if (highbd) {
Yaowu Xu's avatar
Yaowu Xu committed
633
        aom_highbd_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
634
                              ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
635
      } else {
Yaowu Xu's avatar
Yaowu Xu committed
636
        aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
637
                       ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
638 639
      }
#else
Yaowu Xu's avatar
Yaowu Xu committed
640
      aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset, ref_stride,
Jingning Han's avatar
Jingning Han committed
641 642
                     &min, &max);
#endif
643 644
      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
645 646 647 648 649
    }
  }
  return (minmax_max - minmax_min);
}

650
#if CONFIG_HIGHBITDEPTH
651 652 653
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
654
    return aom_highbd_avg_4x4(src, stride);
655
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
656
    return aom_avg_4x4(src, stride);
657 658
  }
}
Jingning Han's avatar
Jingning Han committed
659
#else
660
static INLINE int avg_4x4(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
661
  return aom_avg_4x4(src, stride);
662
}
Jingning Han's avatar
Jingning Han committed
663
#endif
664

665
#if CONFIG_HIGHBITDEPTH
666 667 668
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
669
    return aom_highbd_avg_8x8(src, stride);
670
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
671
    return aom_avg_8x8(src, stride);
Jingning Han's avatar
Jingning Han committed
672 673
  }
}
674 675
#else
static INLINE int avg_8x8(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
676
  return aom_avg_8x8(src, stride);
677 678
}
#endif
Jingning Han's avatar
Jingning Han committed
679

680
static void init_variance_tree(VAR_TREE *const vt,
681
#if CONFIG_HIGHBITDEPTH
682
                               const int highbd,
Jingning Han's avatar
Jingning Han committed
683
#endif
684
                               BLOCK_SIZE bsize, BLOCK_SIZE leaf_size,
685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701
                               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;

702
#if CONFIG_HIGHBITDEPTH
703
  vt->highbd = highbd;
704
#endif  // CONFIG_HIGHBITDEPTH
705 706 707

  if (bsize > leaf_size) {
    const BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_SPLIT);
708
    const int px = block_size_wide[subsize];
709 710

    init_variance_tree(vt->split[0],
711
#if CONFIG_HIGHBITDEPTH
712
                       highbd,
713
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
714 715
                       subsize, leaf_size, AOMMIN(px, width),
                       AOMMIN(px, height), src, src_stride, ref, ref_stride);
716
    init_variance_tree(vt->split[1],
717
#if CONFIG_HIGHBITDEPTH
718
                       highbd,
719
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
720
                       subsize, leaf_size, width - px, AOMMIN(px, height),
721
                       src + px, src_stride, ref + px, ref_stride);
722
    init_variance_tree(vt->split[2],
723
#if CONFIG_HIGHBITDEPTH
724
                       highbd,
725
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
726
                       subsize, leaf_size, AOMMIN(px, width), height - px,
727 728
                       src + px * src_stride, src_stride, ref + px * ref_stride,
                       ref_stride);
729
    init_variance_tree(vt->split[3],
730
#if CONFIG_HIGHBITDEPTH
731
                       highbd,
732
#endif  // CONFIG_HIGHBITDEPTH
733
                       subsize, leaf_size, width - px, height - px,
734 735 736 737 738 739 740
                       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.
741
static void fill_variance_tree(VAR_TREE *const vt, const BLOCK_SIZE leaf_size) {
742 743 744 745 746 747 748 749 750
  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
751 752
    unsigned int sse = 0;
    int sum = 0;
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
    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);

783
    if (vt->bsize <= BLOCK_16X16) fill_variance_node(vt);
784 785 786 787 788 789
  } 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;
790
    const unsigned int sse = sum * sum;
791 792 793 794 795
    assert(vt->bsize == BLOCK_4X4);
    fill_variance(sse, sum, 0, &vt->variances.none);
  }
}

796
static int check_split_key_frame(VAR_TREE *const vt, const int64_t threshold) {
797 798 799 800 801 802 803 804 805 806 807
  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
808
static int check_split(AV1_COMP *const cpi, VAR_TREE *const vt,
809
                       const int segment_id, const int64_t *const thresholds) {
810 811
  if (vt->bsize == BLOCK_16X16) {
    vt->force_split = vt->variances.none.variance > thresholds[0];
812 813
    if (!vt->force_split && vt->variances.none.variance > thresholds[-1] &&
        !cyclic_refresh_segment_id_boosted(segment_id)) {
814 815 816
      // 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.
817 818
      int minmax =
          compute_minmax_8x8(vt->src, vt->src_stride, vt->ref, vt->ref_stride,
819
#if CONFIG_HIGHBITDEPTH
820
                             vt->highbd,
Jingning Han's avatar
Jingning Han committed
821
#endif
822
                             vt->width, vt->height);
823 824 825
      vt->force_split = minmax > cpi->vbp_threshold_minmax;
    }
  } else {
826 827 828 829 830 831 832 833
    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);
834 835 836

    if (vt->bsize == BLOCK_32X32 && !vt->force_split) {
      vt->force_split = vt->variances.none.variance > thresholds[0];
Jingning Han's avatar
Jingning Han committed
837 838
    }
  }
839 840

  return vt->force_split;
Jingning Han's avatar
Jingning Han committed
841 842 843
}

// This function chooses partitioning based on the variance between source and
844 845
// reconstructed last (or golden), where variance is computed for down-sampled
// inputs.
Yaowu Xu's avatar
Yaowu Xu committed
846
static void choose_partitioning(AV1_COMP *const cpi, ThreadData *const td,
847
                                const TileInfo *const tile, MACROBLOCK *const x,
848
                                const int mi_row, const int mi_col) {
Yaowu Xu's avatar
Yaowu Xu committed
849
  AV1_COMMON *const cm = &cpi->common;
850 851
  MACROBLOCKD *const xd = &x->e_mbd;
  VAR_TREE *const vt = td->var_root[cm->mib_size_log2 - MIN_MIB_SIZE_LOG2];
852
#if CONFIG_DUAL_FILTER
853
  int i;
854
#endif
855 856 857 858
  const uint8_t *src;
  const uint8_t *ref;
  int src_stride;
  int ref_stride;
859 860
  int pixels_wide = MI_SIZE * mi_size_wide[cm->sb_size];
  int pixels_high = MI_SIZE * mi_size_high[cm->sb_size];
861
  int64_t thresholds[5] = {
862 863
    cpi->vbp_thresholds[0], cpi->vbp_thresholds[1], cpi->vbp_thresholds[2],
    cpi->vbp_thresholds[3], cpi->vbp_thresholds[4],
864
  };
865 866
  BLOCK_SIZE bsize_min[5] = { BLOCK_16X16, BLOCK_16X16, BLOCK_16X16,
                              cpi->vbp_bsize_min, BLOCK_8X8 };
867 868 869
  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
870 871 872 873 874

  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  const int low_res = (