encodeframe.c 267 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
static void encode_superblock(const AV1_COMP *const cpi, ThreadData *td,
                              TOKENEXTRA **t, RUN_TYPE dry_run, int mi_row,
75
                              int mi_col, BLOCK_SIZE bsize, int *rate);
Jingning Han's avatar
Jingning Han committed
76

77 78 79
#if CONFIG_SUPERTX
static int check_intra_b(PICK_MODE_CONTEXT *ctx);

80 81 82 83
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,
84 85 86
#if CONFIG_EXT_INTER
                               int mi_row_ori, int mi_col_ori,
#endif  // CONFIG_EXT_INTER
87 88 89 90
                               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);
91
static void predict_sb_complex(const AV1_COMP *const cpi, ThreadData *td,
92 93
                               const TileInfo *const tile, int mi_row,
                               int mi_col, int mi_row_ori, int mi_col_ori,
94
                               RUN_TYPE dry_run, BLOCK_SIZE bsize,
95 96
                               BLOCK_SIZE top_bsize, uint8_t *dst_buf[3],
                               int dst_stride[3], PC_TREE *pc_tree);
97
static void update_state_sb_supertx(const AV1_COMP *const cpi, ThreadData *td,
98 99
                                    const TileInfo *const tile, int mi_row,
                                    int mi_col, BLOCK_SIZE bsize,
100
                                    RUN_TYPE dry_run, PC_TREE *pc_tree);
101
static void rd_supertx_sb(const AV1_COMP *const cpi, ThreadData *td,
102 103 104
                          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);
105 106
#endif  // CONFIG_SUPERTX

Jingning Han's avatar
Jingning Han committed
107 108 109 110
// 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
111
static const uint8_t AV1_VAR_OFFS[MAX_SB_SIZE] = {
112 113 114 115 116
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
117
#if CONFIG_EXT_PARTITION
118 119 120 121 122
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128
123
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
124 125
};

126
#if CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
127
static const uint16_t AV1_HIGH_VAR_OFFS_8[MAX_SB_SIZE] = {
128 129 130 131 132
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
133
#if CONFIG_EXT_PARTITION
134 135 136 137 138
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128
139
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
140 141
};

Yaowu Xu's avatar
Yaowu Xu committed
142
static const uint16_t AV1_HIGH_VAR_OFFS_10[MAX_SB_SIZE] = {
143 144 145 146 147 148 149 150
  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,
151
#if CONFIG_EXT_PARTITION
152 153 154 155 156 157 158 159
  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
160
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
161 162
};

Yaowu Xu's avatar
Yaowu Xu committed
163
static const uint16_t AV1_HIGH_VAR_OFFS_12[MAX_SB_SIZE] = {
164 165 166 167 168 169 170 171 172 173
  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,
174
#if CONFIG_EXT_PARTITION
175 176 177 178 179 180 181 182 183 184
  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
185
#endif  // CONFIG_EXT_PARTITION
Jingning Han's avatar
Jingning Han committed
186
};
187
#endif  // CONFIG_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
188

189
unsigned int av1_get_sby_perpixel_variance(const AV1_COMP *cpi,
Yaowu Xu's avatar
Yaowu Xu committed
190 191
                                           const struct buf_2d *ref,
                                           BLOCK_SIZE bs) {
Jingning Han's avatar
Jingning Han committed
192
  unsigned int sse;
193
  const unsigned int var =
Yaowu Xu's avatar
Yaowu Xu committed
194
      cpi->fn_ptr[bs].vf(ref->buf, ref->stride, AV1_VAR_OFFS, 0, &sse);
Jingning Han's avatar
Jingning Han committed
195 196 197
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}

198
#if CONFIG_HIGHBITDEPTH
199
unsigned int av1_high_get_sby_perpixel_variance(const AV1_COMP *cpi,
Yaowu Xu's avatar
Yaowu Xu committed
200 201
                                                const struct buf_2d *ref,
                                                BLOCK_SIZE bs, int bd) {
Jingning Han's avatar
Jingning Han committed
202 203 204
  unsigned int var, sse;
  switch (bd) {
    case 10:
Yaowu Xu's avatar
Yaowu Xu committed
205 206 207
      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
208 209
      break;
    case 12:
Yaowu Xu's avatar
Yaowu Xu committed
210 211 212
      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
213 214 215
      break;
    case 8:
    default:
216 217
      var =
          cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
Yaowu Xu's avatar
Yaowu Xu committed
218
                             CONVERT_TO_BYTEPTR(AV1_HIGH_VAR_OFFS_8), 0, &sse);
Jingning Han's avatar
Jingning Han committed
219 220 221 222
      break;
  }
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}
223
#endif  // CONFIG_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
224

225
static unsigned int get_sby_perpixel_diff_variance(const AV1_COMP *const cpi,
Jingning Han's avatar
Jingning Han committed
226 227 228 229 230 231 232 233 234 235 236 237 238 239
                                                   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
240 241
static BLOCK_SIZE get_rd_var_based_fixed_partition(AV1_COMP *cpi, MACROBLOCK *x,
                                                   int mi_row, int mi_col) {
242 243
  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
244 245 246 247 248 249 250 251 252 253 254 255
  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.
256 257 258 259
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
260 261 262
  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;
263
  x->mbmi_ext = cpi->mbmi_ext_base + (mi_row * cm->mi_cols + mi_col);
Jingning Han's avatar
Jingning Han committed
264 265
}

266
static void set_offsets_without_segment_id(const AV1_COMP *const cpi,
267
                                           const TileInfo *const tile,
268 269
                                           MACROBLOCK *const x, int mi_row,
                                           int mi_col, BLOCK_SIZE bsize) {
270
  const AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
271
  MACROBLOCKD *const xd = &x->e_mbd;
272 273
  const int mi_width = mi_size_wide[bsize];
  const int mi_height = mi_size_high[bsize];
Jingning Han's avatar
Jingning Han committed
274 275 276

  set_skip_context(xd, mi_row, mi_col);

277
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
278

279 280
#if CONFIG_VAR_TX
  xd->above_txfm_context = cm->above_txfm_context + mi_col;
281
  xd->left_txfm_context =
282
      xd->left_txfm_context_buffer + (mi_row & MAX_MIB_MASK);
283
  xd->max_tx_size = max_txsize_lookup[bsize];
284 285
#endif

Jingning Han's avatar
Jingning Han committed
286
  // Set up destination pointers.
287 288
  av1_setup_dst_planes(xd->plane, bsize, 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
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width,
303
#if CONFIG_DEPENDENT_HORZTILES
304 305 306
                 cm->dependent_horz_tiles,
#endif  // CONFIG_DEPENDENT_HORZTILES
                 cm->mi_rows, cm->mi_cols);
Jingning Han's avatar
Jingning Han committed
307 308

  // Set up source buffers.
309
  av1_setup_src_planes(x, cpi->source, mi_row, mi_col);
Jingning Han's avatar
Jingning Han committed
310 311 312 313 314

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

Yaowu Xu's avatar
Yaowu Xu committed
315
  // required by av1_append_sub8x8_mvs_for_idx() and av1_find_best_ref_mvs()
316 317 318
  xd->tile = *tile;
}

319
static void set_offsets(const AV1_COMP *const cpi, const TileInfo *const tile,
320 321
                        MACROBLOCK *const x, int mi_row, int mi_col,
                        BLOCK_SIZE bsize) {
322
  const AV1_COMMON *const cm = &cpi->common;
323 324 325 326 327 328 329 330
  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
331 332
  // Setup segment ID.
  if (seg->enabled) {
Geza Lore's avatar
Geza Lore committed
333
    if (!cpi->vaq_refresh) {
334 335
      const uint8_t *const map =
          seg->update_map ? cpi->segmentation_map : cm->last_frame_seg_map;
Jingning Han's avatar
Jingning Han committed
336 337
      mbmi->segment_id = get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
Yaowu Xu's avatar
Yaowu Xu committed
338
    av1_init_plane_quantizers(cpi, x, mbmi->segment_id);
Jingning Han's avatar
Jingning Han committed
339 340 341
  } else {
    mbmi->segment_id = 0;
  }
342 343 344 345

#if CONFIG_SUPERTX
  mbmi->segment_id_supertx = MAX_SEGMENTS;
#endif  // CONFIG_SUPERTX
Jingning Han's avatar
Jingning Han committed
346 347
}

348
#if CONFIG_SUPERTX
349
static void set_offsets_supertx(const AV1_COMP *const cpi, ThreadData *td,
350 351
                                const TileInfo *const tile, int mi_row,
                                int mi_col, BLOCK_SIZE bsize) {
352
  MACROBLOCK *const x = &td->mb;
353
  const AV1_COMMON *const cm = &cpi->common;
354
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
355 356
  const int mi_width = mi_size_wide[bsize];
  const int mi_height = mi_size_high[bsize];
357 358 359
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col, cm->dependent_horz_tiles);
#else
360
  set_mode_info_offsets(cpi, x, xd, mi_row, mi_col);
361
#endif
362 363 364

  // 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)));
365 366 367 368 369
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width,
#if CONFIG_DEPENDENT_HORZTILES
                 cm->dependent_horz_tiles,
#endif  // CONFIG_DEPENDENT_HORZTILES
                 cm->mi_rows, cm->mi_cols);
370 371
}

372
static void set_offsets_extend(const AV1_COMP *const cpi, ThreadData *td,
373 374
                               const TileInfo *const tile, int mi_row_pred,
                               int mi_col_pred, int mi_row_ori, int mi_col_ori,
375
                               BLOCK_SIZE bsize_pred) {
376 377 378 379
  // 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;
380
  const AV1_COMMON *const cm = &cpi->common;
381
  MACROBLOCKD *const xd = &x->e_mbd;
Jingning Han's avatar
Jingning Han committed
382 383
  const int mi_width = mi_size_wide[bsize_pred];
  const int mi_height = mi_size_high[bsize_pred];
384

385 386 387 388
#if CONFIG_DEPENDENT_HORZTILES
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori,
                        cm->dependent_horz_tiles);
#else
389
  set_mode_info_offsets(cpi, x, xd, mi_row_ori, mi_col_ori);
390
#endif
391 392 393

  // 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
394 395 396 397 398 399 400 401
  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;
402

Jingning Han's avatar
Jingning Han committed
403 404
// Set up distance of MB to edge of frame in 1/8th pel units.
#if !CONFIG_CB4X4
Jingning Han's avatar
Jingning Han committed
405 406
  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
407
#endif
408
  set_mi_row_col(xd, tile, mi_row_pred, mi_height, mi_col_pred, mi_width,
409 410 411
#if CONFIG_DEPENDENT_HORZTILES
                 cm->dependent_horz_tiles,
#endif  // CONFIG_DEPENDENT_HORZTILES
412
                 cm->mi_rows, cm->mi_cols);
413 414
  xd->up_available = (mi_row_ori > tile->mi_row_start);
  xd->left_available = (mi_col_ori > tile->mi_col_start);
415 416 417 418

  // R/D setup.
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;
419
}
420

Yaowu Xu's avatar
Yaowu Xu committed
421
static void set_segment_id_supertx(const AV1_COMP *const cpi,
422 423
                                   MACROBLOCK *const x, const int mi_row,
                                   const int mi_col, const BLOCK_SIZE bsize) {
Yaowu Xu's avatar
Yaowu Xu committed
424
  const AV1_COMMON *cm = &cpi->common;
425
  const struct segmentation *seg = &cm->seg;
Jingning Han's avatar
Jingning Han committed
426 427
  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);
428 429 430 431
  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;
432

433 434 435 436
  if (!seg->enabled) {
    seg_id_supertx = 0;
  } else {
    // Find the minimum segment_id
437 438 439
    for (r = 0; r < mih; r++)
      for (c = 0; c < miw; c++)
        seg_id_supertx =
Yaowu Xu's avatar
Yaowu Xu committed
440
            AOMMIN(mip[r * cm->mi_stride + c]->mbmi.segment_id, seg_id_supertx);
441 442 443
    assert(0 <= seg_id_supertx && seg_id_supertx < MAX_SEGMENTS);

    // Initialize plane quantisers
Yaowu Xu's avatar
Yaowu Xu committed
444
    av1_init_plane_quantizers(cpi, x, seg_id_supertx);
445
  }
446 447

  // Assign the the segment_id back to segment_id_supertx
448 449
  for (r = 0; r < mih; r++)
    for (c = 0; c < miw; c++)
450
      mip[r * cm->mi_stride + c]->mbmi.segment_id_supertx = seg_id_supertx;
451 452 453
}
#endif  // CONFIG_SUPERTX

Yaowu Xu's avatar
Yaowu Xu committed
454
static void set_block_size(AV1_COMP *const cpi, MACROBLOCK *const x,
455
                           MACROBLOCKD *const xd, int mi_row, int mi_col,
Jingning Han's avatar
Jingning Han committed
456 457
                           BLOCK_SIZE bsize) {
  if (cpi->common.mi_cols > mi_col && cpi->common.mi_rows > mi_row) {
458 459 460 461 462 463 464 465
    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
466 467 468
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
469
static void set_vt_partitioning(AV1_COMP *cpi, MACROBLOCK *const x,
470 471 472
                                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
473
  AV1_COMMON *const cm = &cpi->common;
474 475
  const int hbw = mi_size_wide[vt->bsize] / 2;
  const int hbh = mi_size_high[vt->bsize] / 2;
476 477
  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
478

479
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;
Jingning Han's avatar
Jingning Han committed
480

481 482 483 484
  assert(vt->bsize >= BLOCK_8X8);

  assert(hbh == hbw);

485 486 487 488 489
  if (vt->bsize == BLOCK_8X8 && cm->frame_type != KEY_FRAME) {
    set_block_size(cpi, x, xd, mi_row, mi_col, BLOCK_8X8);
    return;
  }

490
  if (vt->force_split || (!has_cols && !has_rows)) goto split;
Jingning Han's avatar
Jingning Han committed
491 492 493 494

  // 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.
495
  if (vt->bsize == bsize_min[0]) {
496
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
497 498 499 500 501 502 503 504 505 506 507
      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
508
    }
509
  } else if (vt->bsize > bsize_min[0]) {
Jingning Han's avatar
Jingning Han committed
510 511
    // For key frame: take split for bsize above 32X32 or very high variance.
    if (cm->frame_type == KEY_FRAME &&
512
        (vt->bsize > BLOCK_32X32 ||
513
         vt->variances.none.variance > (threshold[0] << 4))) {
514
      goto split;
Jingning Han's avatar
Jingning Han committed
515 516
    }
    // If variance is low, take the bsize (no split).
517
    if (has_cols && has_rows && vt->variances.none.variance < threshold[0]) {
518 519
      set_block_size(cpi, x, xd, mi_row, mi_col, vt->bsize);
      return;
Jingning Han's avatar
Jingning Han committed
520 521 522
    }

    // Check vertical split.
523 524 525 526
    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
527 528
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
529 530
        set_block_size(cpi, x, xd, mi_row, mi_col + hbw, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
531 532 533
      }
    }
    // Check horizontal split.
534 535 536 537
    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
538 539
          get_plane_block_size(subsize, &xd->plane[1]) < BLOCK_INVALID) {
        set_block_size(cpi, x, xd, mi_row, mi_col, subsize);
540 541
        set_block_size(cpi, x, xd, mi_row + hbh, mi_col, subsize);
        return;
Jingning Han's avatar
Jingning Han committed
542 543
      }
    }
544
  }
Jingning Han's avatar
Jingning Han committed
545

546 547 548 549 550 551 552 553 554 555 556
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
557 558 559 560 561 562
}

// 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
563 564
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
565 566
  const int is_key_frame = (cm->frame_type == KEY_FRAME);
  const int threshold_multiplier = is_key_frame ? 20 : 1;
567 568
  const int64_t threshold_base =
      (int64_t)(threshold_multiplier * cpi->y_dequant[q][1]);
Jingning Han's avatar
Jingning Han committed
569
  if (is_key_frame) {
570
    thresholds[1] = threshold_base;
Jingning Han's avatar
Jingning Han committed
571
    thresholds[2] = threshold_base >> 2;
572 573
    thresholds[3] = threshold_base >> 2;
    thresholds[4] = threshold_base << 2;
Jingning Han's avatar
Jingning Han committed
574
  } else {
575
    thresholds[2] = threshold_base;
Jingning Han's avatar
Jingning Han committed
576
    if (cm->width <= 352 && cm->height <= 288) {
577 578
      thresholds[1] = threshold_base >> 2;
      thresholds[3] = threshold_base << 3;
Jingning Han's avatar
Jingning Han committed
579
    } else {
580 581
      thresholds[1] = threshold_base;
      thresholds[2] = (5 * threshold_base) >> 2;
Jingning Han's avatar
Jingning Han committed
582
      if (cm->width >= 1920 && cm->height >= 1080)
583 584
        thresholds[2] = (7 * threshold_base) >> 2;
      thresholds[3] = threshold_base << cpi->oxcf.speed;
Jingning Han's avatar
Jingning Han committed
585 586
    }
  }
587
  thresholds[0] = INT64_MIN;
Jingning Han's avatar
Jingning Han committed
588 589
}

Yaowu Xu's avatar
Yaowu Xu committed
590 591
void av1_set_variance_partition_thresholds(AV1_COMP *cpi, int q) {
  AV1_COMMON *const cm = &cpi->common;
Jingning Han's avatar
Jingning Han committed
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606
  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
607 608 609
        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
610 611 612 613 614 615 616
      cpi->vbp_bsize_min = BLOCK_16X16;
    }
    cpi->vbp_threshold_minmax = 15 + (q >> 3);
  }
}

// Compute the minmax over the 8x8 subblocks.
617 618
static int compute_minmax_8x8(const uint8_t *src, int src_stride,
                              const uint8_t *ref, int ref_stride,
619
#if CONFIG_HIGHBITDEPTH
620
                              int highbd,
Jingning Han's avatar
Jingning Han committed
621
#endif
622
                              int pixels_wide, int pixels_high) {
Jingning Han's avatar
Jingning Han committed
623 624 625 626 627
  int k;
  int minmax_max = 0;
  int minmax_min = 255;
  // Loop over the 4 8x8 subblocks.
  for (k = 0; k < 4; k++) {
628 629
    const int x8_idx = ((k & 1) << 3);
    const int y8_idx = ((k >> 1) << 3);
Jingning Han's avatar
Jingning Han committed
630 631 632
    int min = 0;
    int max = 0;
    if (x8_idx < pixels_wide && y8_idx < pixels_high) {
633 634
      const int src_offset = y8_idx * src_stride + x8_idx;
      const int ref_offset = y8_idx * ref_stride + x8_idx;
635
#if CONFIG_HIGHBITDEPTH
636
      if (highbd) {
Yaowu Xu's avatar
Yaowu Xu committed
637
        aom_highbd_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
638
                              ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
639
      } else {
Yaowu Xu's avatar
Yaowu Xu committed
640
        aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset,
641
                       ref_stride, &min, &max);
Jingning Han's avatar
Jingning Han committed
642 643
      }
#else
Yaowu Xu's avatar
Yaowu Xu committed
644
      aom_minmax_8x8(src + src_offset, src_stride, ref + ref_offset, ref_stride,
Jingning Han's avatar
Jingning Han committed
645 646
                     &min, &max);
#endif
647 648
      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
649 650 651 652 653
    }
  }
  return (minmax_max - minmax_min);
}

654
#if CONFIG_HIGHBITDEPTH
655 656 657
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
658
    return aom_highbd_avg_4x4(src, stride);
659
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
660
    return aom_avg_4x4(src, stride);
661 662
  }
}
Jingning Han's avatar
Jingning Han committed
663
#else
664
static INLINE int avg_4x4(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
665
  return aom_avg_4x4(src, stride);
666
}
Jingning Han's avatar
Jingning Han committed
667
#endif
668

669
#if CONFIG_HIGHBITDEPTH
670 671 672
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
673
    return aom_highbd_avg_8x8(src, stride);
674
  } else {
Yaowu Xu's avatar
Yaowu Xu committed
675
    return aom_avg_8x8(src, stride);
Jingning Han's avatar
Jingning Han committed
676 677
  }
}
678 679
#else
static INLINE int avg_8x8(const uint8_t *const src, const int stride) {
Yaowu Xu's avatar
Yaowu Xu committed
680
  return aom_avg_8x8(src, stride);
681 682
}
#endif
Jingning Han's avatar
Jingning Han committed
683

684
static void init_variance_tree(VAR_TREE *const vt,
685
#if CONFIG_HIGHBITDEPTH
686
                               const int highbd,
Jingning Han's avatar
Jingning Han committed
687
#endif
688
                               BLOCK_SIZE bsize, BLOCK_SIZE leaf_size,
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
                               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;

706
#if CONFIG_HIGHBITDEPTH
707
  vt->highbd = highbd;
708
#endif  // CONFIG_HIGHBITDEPTH
709 710 711

  if (bsize > leaf_size) {
    const BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_SPLIT);
712
    const int px = block_size_wide[subsize];
713 714

    init_variance_tree(vt->split[0],
715
#if CONFIG_HIGHBITDEPTH
716
                       highbd,
717
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
718 719
                       subsize, leaf_size, AOMMIN(px, width),
                       AOMMIN(px, height), src, src_stride, ref, ref_stride);
720
    init_variance_tree(vt->split[1],
721
#if CONFIG_HIGHBITDEPTH
722
                       highbd,
723
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
724
                       subsize, leaf_size, width - px, AOMMIN(px, height),
725
                       src + px, src_stride, ref + px, ref_stride);
726
    init_variance_tree(vt->split[2],
727
#if CONFIG_HIGHBITDEPTH
728
                       highbd,
729
#endif  // CONFIG_HIGHBITDEPTH
Yaowu Xu's avatar
Yaowu Xu committed
730
                       subsize, leaf_size, AOMMIN(px, width), height - px,
731 732
                       src + px * src_stride, src_stride, ref + px * ref_stride,
                       ref_stride);
733
    init_variance_tree(vt->split[3],
734
#if CONFIG_HIGHBITDEPTH
735
                       highbd,
736
#endif  // CONFIG_HIGHBITDEPTH
737
                       subsize, leaf_size, width - px, height - px,
738 739 740 741 742 743 744
                       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.
745
static void fill_variance_tree(VAR_TREE *const vt, const BLOCK_SIZE leaf_size) {
746 747 748 749 750 751 752 753 754
  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
755 756
    unsigned int sse = 0;
    int sum = 0;
757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786
    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);

787
    if (vt->bsize <= BLOCK_16X16) fill_variance_node(vt);
788 789 790 791 792 793
  } 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;
794
    const unsigned int sse = sum * sum;
795 796 797 798 799
    assert(vt->bsize == BLOCK_4X4);
    fill_variance(sse, sum, 0, &vt->variances.none);
  }
}

800
static int check_split_key_frame(VAR_TREE *const vt, const int64_t threshold) {
801 802 803 804 805 806 807 808 809 810 811
  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
812
static int check_split(AV1_COMP *const cpi, VAR_TREE *const vt,
813
                       const int segment_id, const int64_t *const thresholds) {
814 815
  if (vt->bsize == BLOCK_16X16) {
    vt->force_split = vt->variances.none.variance > thresholds[0];
816 817
    if (!vt->force_split && vt->variances.none.variance > thresholds[-1] &&
        !cyclic_refresh_segment_id_boosted(segment_id)) {
818 819 820
      // 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.
821 822
      int minmax =
          compute_minmax_8x8(vt->src, vt->src_stride, vt->ref, vt->ref_stride,
823
#if CONFIG_HIGHBITDEPTH
824
                             vt->highbd,
Jingning Han's avatar
Jingning Han committed
825
#endif
826
                             vt->width, vt->height);
827 828 829
      vt->force_split = minmax > cpi->vbp_threshold_minmax;
    }
  } else {
830 831 832 833 834 835 836 837
    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);
838 839 840

    if (vt->bsize == BLOCK_32X32 && !vt->force_split) {
      vt->force_split = vt->variances.none.variance > thresholds[0];
Jingning Han's avatar
Jingning Han committed
841 842
    }
  }
843 844

  return vt->force_split;
Jingning Han's avatar
Jingning Han committed
845 846 847
}

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