vp9_encodeframe.c 122 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5 6
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
7
 *  in the file PATENTS.  All contributing project authors may
8
 *  be found in the AUTHORS file in the root of the source tree.
John Koleszar's avatar
John Koleszar committed
9 10
 */

Dmitry Kovalev's avatar
Dmitry Kovalev committed
11 12 13 14
#include <limits.h>
#include <math.h>
#include <stdio.h>

Jim Bankoski's avatar
Jim Bankoski committed
15
#include "./vp9_rtcd.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
16 17 18 19
#include "./vpx_config.h"

#include "vpx_ports/vpx_timer.h"

20
#include "vp9/common/vp9_common.h"
Yaowu Xu's avatar
Yaowu Xu committed
21
#include "vp9/common/vp9_entropy.h"
22
#include "vp9/common/vp9_entropymode.h"
23
#include "vp9/common/vp9_idct.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
24 25 26
#include "vp9/common/vp9_mvref_common.h"
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_quant_common.h"
27
#include "vp9/common/vp9_reconintra.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
28
#include "vp9/common/vp9_reconinter.h"
29
#include "vp9/common/vp9_seg_common.h"
30
#include "vp9/common/vp9_systemdependent.h"
31
#include "vp9/common/vp9_tile_common.h"
32

33
#include "vp9/encoder/vp9_aq_complexity.h"
Marco Paniconi's avatar
Marco Paniconi committed
34 35
#include "vp9/encoder/vp9_aq_cyclicrefresh.h"
#include "vp9/encoder/vp9_aq_variance.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
36 37 38
#include "vp9/encoder/vp9_encodeframe.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_encodemv.h"
39
#include "vp9/encoder/vp9_extend.h"
40
#include "vp9/encoder/vp9_pickmode.h"
Dmitry Kovalev's avatar
Dmitry Kovalev committed
41 42
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/encoder/vp9_segmentation.h"
43
#include "vp9/encoder/vp9_tokenize.h"
44

45 46 47 48 49 50
#define GF_ZEROMV_ZBIN_BOOST 0
#define LF_ZEROMV_ZBIN_BOOST 0
#define MV_ZBIN_BOOST        0
#define SPLIT_MV_ZBIN_BOOST  0
#define INTRA_ZBIN_BOOST     0

51
static INLINE uint8_t *get_sb_index(MACROBLOCK *x, BLOCK_SIZE subsize) {
52 53 54 55 56
  switch (subsize) {
    case BLOCK_64X64:
    case BLOCK_64X32:
    case BLOCK_32X64:
    case BLOCK_32X32:
57
      return &x->sb_index;
58 59 60
    case BLOCK_32X16:
    case BLOCK_16X32:
    case BLOCK_16X16:
61
      return &x->mb_index;
62 63 64
    case BLOCK_16X8:
    case BLOCK_8X16:
    case BLOCK_8X8:
65
      return &x->b_index;
66 67 68
    case BLOCK_8X4:
    case BLOCK_4X8:
    case BLOCK_4X4:
69
      return &x->ab_index;
70 71 72 73 74 75
    default:
      assert(0);
      return NULL;
  }
}

Jim Bankoski's avatar
Jim Bankoski committed
76
static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t, int output_enabled,
77
                              int mi_row, int mi_col, BLOCK_SIZE bsize);
78

79
// Motion vector component magnitude threshold for defining fast motion.
80
#define FAST_MOTION_MV_THRESH 24
81

82 83 84 85
// 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.
86 87 88 89 90 91 92 93 94 95 96
static const uint8_t VP9_VAR_OFFS[64] = {
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128,
  128, 128, 128, 128, 128, 128, 128, 128
};

97
static unsigned int get_sby_perpixel_variance(VP9_COMP *cpi,
98
                                              const struct buf_2d *ref,
99
                                              BLOCK_SIZE bs) {
100 101 102
  unsigned int sse;
  const unsigned int var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                                              VP9_VAR_OFFS, 0, &sse);
103
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
104 105
}

106
static unsigned int get_sby_perpixel_diff_variance(VP9_COMP *cpi,
107 108
                                                   const struct buf_2d *ref,
                                                   int mi_row, int mi_col,
109
                                                   BLOCK_SIZE bs) {
110 111 112 113 114 115
  const YV12_BUFFER_CONFIG *last = get_ref_frame_buffer(cpi, LAST_FRAME);
  const uint8_t* last_y = &last->y_buffer[mi_row * MI_SIZE * last->y_stride +
                                              mi_col * MI_SIZE];
  unsigned int sse;
  const unsigned int var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
                                              last_y, last->y_stride, &sse);
116 117 118 119 120 121
  return ROUND_POWER_OF_TWO(var, num_pels_log2_lookup[bs]);
}

static BLOCK_SIZE get_rd_var_based_fixed_partition(VP9_COMP *cpi,
                                                   int mi_row,
                                                   int mi_col) {
122
  unsigned int var = get_sby_perpixel_diff_variance(cpi, &cpi->mb.plane[0].src,
123 124 125
                                                    mi_row, mi_col,
                                                    BLOCK_64X64);
  if (var < 8)
126
    return BLOCK_64X64;
127
  else if (var < 128)
128
    return BLOCK_32X32;
129 130 131 132
  else if (var < 2048)
    return BLOCK_16X16;
  else
    return BLOCK_8X8;
133 134
}

135 136 137
static BLOCK_SIZE get_nonrd_var_based_fixed_partition(VP9_COMP *cpi,
                                                      int mi_row,
                                                      int mi_col) {
138
  unsigned int var = get_sby_perpixel_diff_variance(cpi, &cpi->mb.plane[0].src,
139 140
                                                    mi_row, mi_col,
                                                    BLOCK_64X64);
141
  if (var < 4)
142
    return BLOCK_64X64;
143
  else if (var < 10)
144 145
    return BLOCK_32X32;
  else
146
    return BLOCK_16X16;
147 148
}

149 150
// Lighter version of set_offsets that only sets the mode info
// pointers.
151
static INLINE void set_modeinfo_offsets(VP9_COMMON *const cm,
152 153 154
                                        MACROBLOCKD *const xd,
                                        int mi_row,
                                        int mi_col) {
155 156 157
  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;
158 159
}

Alex Converse's avatar
Alex Converse committed
160
static int is_block_in_mb_map(const VP9_COMP *cpi, int mi_row, int mi_col,
161
                              BLOCK_SIZE bsize) {
Alex Converse's avatar
Alex Converse committed
162
  const VP9_COMMON *const cm = &cpi->common;
163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185
  const int mb_rows = cm->mb_rows;
  const int mb_cols = cm->mb_cols;
  const int mb_row = mi_row >> 1;
  const int mb_col = mi_col >> 1;
  const int mb_width = num_8x8_blocks_wide_lookup[bsize] >> 1;
  const int mb_height = num_8x8_blocks_high_lookup[bsize] >> 1;
  int r, c;
  if (bsize <= BLOCK_16X16) {
    return cpi->active_map[mb_row * mb_cols + mb_col];
  }
  for (r = 0; r < mb_height; ++r) {
    for (c = 0; c < mb_width; ++c) {
      int row = mb_row + r;
      int col = mb_col + c;
      if (row >= mb_rows || col >= mb_cols)
        continue;
      if (cpi->active_map[row * mb_cols + col])
        return 1;
    }
  }
  return 0;
}

Alex Converse's avatar
Alex Converse committed
186 187 188 189 190 191 192 193 194 195
static int check_active_map(const VP9_COMP *cpi, const MACROBLOCK *x,
                            int mi_row, int mi_col,
                            BLOCK_SIZE bsize) {
  if (cpi->active_map_enabled && !x->e_mbd.lossless) {
    return is_block_in_mb_map(cpi, mi_row, mi_col, bsize);
  } else {
    return 1;
  }
}

196 197 198 199 200 201 202 203 204 205
static void set_offsets(VP9_COMP *cpi, const TileInfo *const tile,
                        int mi_row, int mi_col, BLOCK_SIZE bsize) {
  MACROBLOCK *const x = &cpi->mb;
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *mbmi;
  const int mi_width = num_8x8_blocks_wide_lookup[bsize];
  const int mi_height = num_8x8_blocks_high_lookup[bsize];
  const struct segmentation *const seg = &cm->seg;

206
  set_skip_context(xd, mi_row, mi_col);
207 208

  // Activity map pointer
Alex Converse's avatar
Alex Converse committed
209
  x->in_active_map = check_active_map(cpi, x, mi_row, mi_col, bsize);
210 211 212

  set_modeinfo_offsets(cm, xd, mi_row, mi_col);

213
  mbmi = &xd->mi[0]->mbmi;
214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233

  // Set up destination pointers.
  vp9_setup_dst_planes(xd, get_frame_new_buffer(cm), mi_row, mi_col);

  // Set up limit values for MV components.
  // Mv beyond the range do not produce new/different prediction block.
  x->mv_row_min = -(((mi_row + mi_height) * MI_SIZE) + VP9_INTERP_EXTEND);
  x->mv_col_min = -(((mi_col + mi_width) * MI_SIZE) + VP9_INTERP_EXTEND);
  x->mv_row_max = (cm->mi_rows - mi_row) * MI_SIZE + VP9_INTERP_EXTEND;
  x->mv_col_max = (cm->mi_cols - mi_col) * MI_SIZE + VP9_INTERP_EXTEND;

  // 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)));
  set_mi_row_col(xd, tile, mi_row, mi_height, mi_col, mi_width,
                 cm->mi_rows, cm->mi_cols);

  // Set up source buffers.
  vp9_setup_src_planes(x, cpi->Source, mi_row, mi_col);

  // R/D setup.
Dmitry Kovalev's avatar
Dmitry Kovalev committed
234 235
  x->rddiv = cpi->rd.RDDIV;
  x->rdmult = cpi->rd.RDMULT;
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252

  // Setup segment ID.
  if (seg->enabled) {
    if (cpi->oxcf.aq_mode != VARIANCE_AQ) {
      const uint8_t *const map = seg->update_map ? cpi->segmentation_map
                                                 : cm->last_frame_seg_map;
      mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
    vp9_init_plane_quantizers(cpi, x);

    x->encode_breakout = cpi->segment_encode_breakout[mbmi->segment_id];
  } else {
    mbmi->segment_id = 0;
    x->encode_breakout = cpi->encode_breakout;
  }
}

253
static void duplicate_mode_info_in_sb(VP9_COMMON * const cm,
254 255 256 257 258 259 260 261 262 263
                                     MACROBLOCKD *const xd,
                                     int mi_row,
                                     int mi_col,
                                     BLOCK_SIZE bsize) {
  const int block_width = num_8x8_blocks_wide_lookup[bsize];
  const int block_height = num_8x8_blocks_high_lookup[bsize];
  int i, j;
  for (j = 0; j < block_height; ++j)
    for (i = 0; i < block_width; ++i) {
      if (mi_row + j < cm->mi_rows && mi_col + i < cm->mi_cols)
264
        xd->mi[j * xd->mi_stride + i] = xd->mi[0];
265 266 267 268 269 270 271 272 273 274
    }
}

static void set_block_size(VP9_COMP * const cpi,
                           const TileInfo *const tile,
                           int mi_row, int mi_col,
                           BLOCK_SIZE bsize) {
  if (cpi->common.mi_cols > mi_col && cpi->common.mi_rows > mi_row) {
    MACROBLOCKD *const xd = &cpi->mb.e_mbd;
    set_modeinfo_offsets(&cpi->common, xd, mi_row, mi_col);
275
    xd->mi[0]->mbmi.sb_type = bsize;
276
    duplicate_mode_info_in_sb(&cpi->common, xd, mi_row, mi_col, bsize);
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471
  }
}

typedef struct {
  int64_t sum_square_error;
  int64_t sum_error;
  int count;
  int variance;
} var;

typedef struct {
  var none;
  var horz[2];
  var vert[2];
} partition_variance;

typedef struct {
  partition_variance part_variances;
  var split[4];
} v8x8;

typedef struct {
  partition_variance part_variances;
  v8x8 split[4];
} v16x16;

typedef struct {
  partition_variance part_variances;
  v16x16 split[4];
} v32x32;

typedef struct {
  partition_variance part_variances;
  v32x32 split[4];
} v64x64;

typedef struct {
  partition_variance *part_variances;
  var *split[4];
} variance_node;

typedef enum {
  V16X16,
  V32X32,
  V64X64,
} TREE_LEVEL;

static void tree_to_node(void *data, BLOCK_SIZE bsize, variance_node *node) {
  int i;
  switch (bsize) {
    case BLOCK_64X64: {
      v64x64 *vt = (v64x64 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_32X32: {
      v32x32 *vt = (v32x32 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_16X16: {
      v16x16 *vt = (v16x16 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i].part_variances.none;
      break;
    }
    case BLOCK_8X8: {
      v8x8 *vt = (v8x8 *) data;
      node->part_variances = &vt->part_variances;
      for (i = 0; i < 4; i++)
        node->split[i] = &vt->split[i];
      break;
    }
    default: {
      assert(0);
    }
  }
}

// Set variance values given sum square error, sum error, count.
static void fill_variance(int64_t s2, int64_t s, int c, var *v) {
  v->sum_square_error = s2;
  v->sum_error = s;
  v->count = c;
  if (c > 0)
    v->variance = (int)(256 *
                        (v->sum_square_error - v->sum_error * v->sum_error /
                         v->count) / v->count);
  else
    v->variance = 0;
}

void sum_2_variances(const var *a, const var *b, var *r) {
  fill_variance(a->sum_square_error + b->sum_square_error,
                a->sum_error + b->sum_error, a->count + b->count, r);
}

static void fill_variance_tree(void *data, BLOCK_SIZE bsize) {
  variance_node node;
  tree_to_node(data, bsize, &node);
  sum_2_variances(node.split[0], node.split[1], &node.part_variances->horz[0]);
  sum_2_variances(node.split[2], node.split[3], &node.part_variances->horz[1]);
  sum_2_variances(node.split[0], node.split[2], &node.part_variances->vert[0]);
  sum_2_variances(node.split[1], node.split[3], &node.part_variances->vert[1]);
  sum_2_variances(&node.part_variances->vert[0], &node.part_variances->vert[1],
                  &node.part_variances->none);
}

static int set_vt_partitioning(VP9_COMP *cpi,
                               void *data,
                               const TileInfo *const tile,
                               BLOCK_SIZE bsize,
                               int mi_row,
                               int mi_col,
                               int mi_size) {
  VP9_COMMON * const cm = &cpi->common;
  variance_node vt;
  const int block_width = num_8x8_blocks_wide_lookup[bsize];
  const int block_height = num_8x8_blocks_high_lookup[bsize];
  // TODO(debargha): Choose this more intelligently.
  const int64_t threshold_multiplier = 25;
  int64_t threshold = threshold_multiplier * cpi->common.base_qindex;
  assert(block_height == block_width);

  tree_to_node(data, bsize, &vt);

  // Split none is available only if we have more than half a block size
  // in width and height inside the visible image.
  if (mi_col + block_width / 2 < cm->mi_cols &&
      mi_row + block_height / 2 < cm->mi_rows &&
      vt.part_variances->none.variance < threshold) {
    set_block_size(cpi, tile, mi_row, mi_col, bsize);
    return 1;
  }

  // Vertical split is available on all but the bottom border.
  if (mi_row + block_height / 2 < cm->mi_rows &&
      vt.part_variances->vert[0].variance < threshold &&
      vt.part_variances->vert[1].variance < threshold) {
    BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_VERT);
    set_block_size(cpi, tile, mi_row, mi_col, subsize);
    set_block_size(cpi, tile, mi_row, mi_col + block_width / 2, subsize);
    return 1;
  }

  // Horizontal split is available on all but the right border.
  if (mi_col + block_width / 2 < cm->mi_cols &&
      vt.part_variances->horz[0].variance < threshold &&
      vt.part_variances->horz[1].variance < threshold) {
    BLOCK_SIZE subsize = get_subsize(bsize, PARTITION_HORZ);
    set_block_size(cpi, tile, mi_row, mi_col, subsize);
    set_block_size(cpi, tile, mi_row + block_height / 2, mi_col, subsize);
    return 1;
  }
  return 0;
}

// TODO(debargha): Fix this function and make it work as expected.
static void choose_partitioning(VP9_COMP *cpi,
                                const TileInfo *const tile,
                                int mi_row, int mi_col) {
  VP9_COMMON * const cm = &cpi->common;
  MACROBLOCK *x = &cpi->mb;
  MACROBLOCKD *xd = &cpi->mb.e_mbd;

  int i, j, k;
  v64x64 vt;
  uint8_t *s;
  const uint8_t *d;
  int sp;
  int dp;
  int pixels_wide = 64, pixels_high = 64;
  int_mv nearest_mv, near_mv;
  const YV12_BUFFER_CONFIG *yv12 = get_ref_frame_buffer(cpi, LAST_FRAME);
  const struct scale_factors *const sf = &cm->frame_refs[LAST_FRAME - 1].sf;

  vp9_zero(vt);
  set_offsets(cpi, tile, mi_row, mi_col, BLOCK_64X64);

  if (xd->mb_to_right_edge < 0)
    pixels_wide += (xd->mb_to_right_edge >> 3);
  if (xd->mb_to_bottom_edge < 0)
    pixels_high += (xd->mb_to_bottom_edge >> 3);

  s = x->plane[0].src.buf;
  sp = x->plane[0].src.stride;

  if (cm->frame_type != KEY_FRAME) {
    vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col, sf);

472 473
    xd->mi[0]->mbmi.ref_frame[0] = LAST_FRAME;
    xd->mi[0]->mbmi.sb_type = BLOCK_64X64;
474
    vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv,
475
                          xd->mi[0]->mbmi.ref_mvs[LAST_FRAME],
476 477
                          &nearest_mv, &near_mv);

478
    xd->mi[0]->mbmi.mv[0] = nearest_mv;
479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570
    vp9_build_inter_predictors_sby(xd, mi_row, mi_col, BLOCK_64X64);

    d = xd->plane[0].dst.buf;
    dp = xd->plane[0].dst.stride;
  } else {
    d = VP9_VAR_OFFS;
    dp = 0;
  }

  // Fill in the entire tree of 8x8 variances for splits.
  for (i = 0; i < 4; i++) {
    const int x32_idx = ((i & 1) << 5);
    const int y32_idx = ((i >> 1) << 5);
    for (j = 0; j < 4; j++) {
      const int x16_idx = x32_idx + ((j & 1) << 4);
      const int y16_idx = y32_idx + ((j >> 1) << 4);
      v16x16 *vst = &vt.split[i].split[j];
      for (k = 0; k < 4; k++) {
        int x_idx = x16_idx + ((k & 1) << 3);
        int y_idx = y16_idx + ((k >> 1) << 3);
        unsigned int sse = 0;
        int sum = 0;
        if (x_idx < pixels_wide && y_idx < pixels_high)
          vp9_get_sse_sum_8x8(s + y_idx * sp + x_idx, sp,
                              d + y_idx * dp + x_idx, dp, &sse, &sum);
        fill_variance(sse, sum, 64, &vst->split[k].part_variances.none);
      }
    }
  }
  // Fill the rest of the variance tree by summing split partition values.
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 4; j++) {
      fill_variance_tree(&vt.split[i].split[j], BLOCK_16X16);
    }
    fill_variance_tree(&vt.split[i], BLOCK_32X32);
  }
  fill_variance_tree(&vt, BLOCK_64X64);

  // Now go through the entire structure,  splitting every block size until
  // we get to one that's got a variance lower than our threshold,  or we
  // hit 8x8.
  if (!set_vt_partitioning(cpi, &vt, tile, BLOCK_64X64,
                           mi_row, mi_col, 8)) {
    for (i = 0; i < 4; ++i) {
      const int x32_idx = ((i & 1) << 2);
      const int y32_idx = ((i >> 1) << 2);
      if (!set_vt_partitioning(cpi, &vt.split[i], tile, BLOCK_32X32,
                               (mi_row + y32_idx), (mi_col + x32_idx), 4)) {
        for (j = 0; j < 4; ++j) {
          const int x16_idx = ((j & 1) << 1);
          const int y16_idx = ((j >> 1) << 1);
          // NOTE: This is a temporary hack to disable 8x8 partitions,
          // since it works really bad - possibly due to a bug
#define DISABLE_8X8_VAR_BASED_PARTITION
#ifdef DISABLE_8X8_VAR_BASED_PARTITION
          if (mi_row + y32_idx + y16_idx + 1 < cm->mi_rows &&
              mi_row + x32_idx + x16_idx + 1 < cm->mi_cols) {
            set_block_size(cpi, tile,
                           (mi_row + y32_idx + y16_idx),
                           (mi_col + x32_idx + x16_idx),
                           BLOCK_16X16);
          } else {
            for (k = 0; k < 4; ++k) {
              const int x8_idx = (k & 1);
              const int y8_idx = (k >> 1);
              set_block_size(cpi, tile,
                             (mi_row + y32_idx + y16_idx + y8_idx),
                             (mi_col + x32_idx + x16_idx + x8_idx),
                             BLOCK_8X8);
            }
          }
#else
          if (!set_vt_partitioning(cpi, &vt.split[i].split[j], tile,
                                   BLOCK_16X16,
                                   (mi_row + y32_idx + y16_idx),
                                   (mi_col + x32_idx + x16_idx), 2)) {
            for (k = 0; k < 4; ++k) {
              const int x8_idx = (k & 1);
              const int y8_idx = (k >> 1);
              set_block_size(cpi, tile,
                             (mi_row + y32_idx + y16_idx + y8_idx),
                             (mi_col + x32_idx + x16_idx + x8_idx),
                             BLOCK_8X8);
            }
          }
#endif
        }
      }
    }
  }
}

571
// Original activity measure from Tim T's code.
572
static unsigned int tt_activity_measure(MACROBLOCK *x) {
John Koleszar's avatar
John Koleszar committed
573
  unsigned int sse;
574 575 576 577 578 579 580 581 582
  // TODO: This could also be done over smaller areas (8x8), but that would
  // require extensive changes elsewhere, as lambda is assumed to be fixed
  // over an entire MB in most of the code.
  // Another option is to compute four 8x8 variances, and pick a single
  // lambda using a non-linear combination (e.g., the smallest, or second
  // smallest, etc.).
  const unsigned int act = vp9_variance16x16(x->plane[0].src.buf,
                                             x->plane[0].src.stride,
                                             VP9_VAR_OFFS, 0, &sse) << 4;
583
  // If the region is flat, lower the activity some more.
584
  return act < (8 << 12) ? MIN(act, 5 << 12) : act;
585 586
}

587
// Stub for alternative experimental activity measures.
588 589
static unsigned int alt_activity_measure(MACROBLOCK *x, int use_dc_pred) {
  return vp9_encode_intra(x, use_dc_pred);
590 591
}

Jim Bankoski's avatar
Jim Bankoski committed
592
static void update_state(VP9_COMP *cpi, PICK_MODE_CONTEXT *ctx,
593 594
                         int mi_row, int mi_col, BLOCK_SIZE bsize,
                         int output_enabled) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
595
  int i, x_idx, y;
596
  VP9_COMMON *const cm = &cpi->common;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
597
  RD_OPT *const rd_opt = &cpi->rd;
598 599
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
600 601
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
John Koleszar's avatar
John Koleszar committed
602
  MODE_INFO *mi = &ctx->mic;
603 604
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  MODE_INFO *mi_addr = xd->mi[0];
605
  const struct segmentation *const seg = &cm->seg;
606

607
  const int mis = cm->mi_stride;
Jim Bankoski's avatar
Jim Bankoski committed
608
  const int mi_width = num_8x8_blocks_wide_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
609
  const int mi_height = num_8x8_blocks_high_lookup[bsize];
610
  int max_plane;
Adrian Grange's avatar
Adrian Grange committed
611

612
  assert(mi->mbmi.sb_type == bsize);
613

614 615
  *mi_addr = *mi;

Paul Wilkins's avatar
Paul Wilkins committed
616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631
  // If segmentation in use
  if (seg->enabled && output_enabled) {
    // For in frame complexity AQ copy the segment id from the segment map.
    if (cpi->oxcf.aq_mode == COMPLEXITY_AQ) {
      const uint8_t *const map = seg->update_map ? cpi->segmentation_map
                                                 : cm->last_frame_seg_map;
      mi_addr->mbmi.segment_id =
        vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
    }
    // Else for cyclic refresh mode update the segment map, set the segment id
    // and then update the quantizer.
    else if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ) {
      vp9_cyclic_refresh_update_segment(cpi, &xd->mi[0]->mbmi,
                                        mi_row, mi_col, bsize, 1);
      vp9_init_plane_quantizers(cpi, x);
    }
632
  }
633

634 635
  max_plane = is_inter_block(mbmi) ? MAX_MB_PLANE : 1;
  for (i = 0; i < max_plane; ++i) {
636
    p[i].coeff = ctx->coeff_pbuf[i][1];
637
    p[i].qcoeff = ctx->qcoeff_pbuf[i][1];
638
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1];
639
    p[i].eobs = ctx->eobs_pbuf[i][1];
640 641
  }

642 643
  for (i = max_plane; i < MAX_MB_PLANE; ++i) {
    p[i].coeff = ctx->coeff_pbuf[i][2];
644
    p[i].qcoeff = ctx->qcoeff_pbuf[i][2];
645
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][2];
646
    p[i].eobs = ctx->eobs_pbuf[i][2];
647 648
  }

John Koleszar's avatar
John Koleszar committed
649 650
  // Restore the coding context of the MB to that that was in place
  // when the mode was picked for it
651 652
  for (y = 0; y < mi_height; y++)
    for (x_idx = 0; x_idx < mi_width; x_idx++)
James Zern's avatar
James Zern committed
653
      if ((xd->mb_to_right_edge >> (3 + MI_SIZE_LOG2)) + mi_width > x_idx
654
        && (xd->mb_to_bottom_edge >> (3 + MI_SIZE_LOG2)) + mi_height > y) {
655
        xd->mi[x_idx + y * mis] = mi_addr;
656
      }
657

658
  if (cpi->oxcf.aq_mode)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
659
    vp9_init_plane_quantizers(cpi, x);
660

661 662
  // FIXME(rbultje) I'm pretty sure this should go to the end of this block
  // (i.e. after the output_enabled)
663 664
  if (bsize < BLOCK_32X32) {
    if (bsize < BLOCK_16X16)
665 666
      ctx->tx_rd_diff[ALLOW_16X16] = ctx->tx_rd_diff[ALLOW_8X8];
    ctx->tx_rd_diff[ALLOW_32X32] = ctx->tx_rd_diff[ALLOW_16X16];
Ronald S. Bultje's avatar
Ronald S. Bultje committed
667
  }
Adrian Grange's avatar
Adrian Grange committed
668

669
  if (is_inter_block(mbmi) && mbmi->sb_type < BLOCK_8X8) {
670 671
    mbmi->mv[0].as_int = mi->bmi[3].as_mv[0].as_int;
    mbmi->mv[1].as_int = mi->bmi[3].as_mv[1].as_int;
John Koleszar's avatar
John Koleszar committed
672 673
  }

674
  x->skip = ctx->skip;
675
  vpx_memcpy(x->zcoeff_blk[mbmi->tx_size], ctx->zcoeff_blk,
676
             sizeof(uint8_t) * ctx->num_4x4_blk);
677

Ronald S. Bultje's avatar
Ronald S. Bultje committed
678 679 680
  if (!output_enabled)
    return;

681
  if (!vp9_segfeature_active(&cm->seg, mbmi->segment_id, SEG_LVL_SKIP)) {
682
    for (i = 0; i < TX_MODES; i++)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
683
      rd_opt->tx_select_diff[i] += ctx->tx_rd_diff[i];
684 685
  }

686
#if CONFIG_INTERNAL_STATS
687
  if (frame_is_intra_only(cm)) {
John Koleszar's avatar
John Koleszar committed
688
    static const int kf_mode_index[] = {
689 690 691 692
      THR_DC        /*DC_PRED*/,
      THR_V_PRED    /*V_PRED*/,
      THR_H_PRED    /*H_PRED*/,
      THR_D45_PRED  /*D45_PRED*/,
John Koleszar's avatar
John Koleszar committed
693 694 695
      THR_D135_PRED /*D135_PRED*/,
      THR_D117_PRED /*D117_PRED*/,
      THR_D153_PRED /*D153_PRED*/,
Dmitry Kovalev's avatar
Dmitry Kovalev committed
696
      THR_D207_PRED /*D207_PRED*/,
697 698
      THR_D63_PRED  /*D63_PRED*/,
      THR_TM        /*TM_PRED*/,
John Koleszar's avatar
John Koleszar committed
699
    };
700
    ++cpi->mode_chosen_counts[kf_mode_index[mbmi->mode]];
John Koleszar's avatar
John Koleszar committed
701 702
  } else {
    // Note how often each mode chosen as best
703 704 705 706
    ++cpi->mode_chosen_counts[ctx->best_mode_index];
  }
#endif
  if (!frame_is_intra_only(cm)) {
707
    if (is_inter_block(mbmi)) {
708
      vp9_update_mv_count(cm, xd);
709 710 711 712 713

      if (cm->interp_filter == SWITCHABLE) {
        const int ctx = vp9_get_pred_context_switchable_interp(xd);
        ++cm->counts.switchable_interp[ctx][mbmi->interp_filter];
      }
714
    }
Adrian Grange's avatar
Adrian Grange committed
715

Dmitry Kovalev's avatar
Dmitry Kovalev committed
716 717 718
    rd_opt->comp_pred_diff[SINGLE_REFERENCE] += ctx->single_pred_diff;
    rd_opt->comp_pred_diff[COMPOUND_REFERENCE] += ctx->comp_pred_diff;
    rd_opt->comp_pred_diff[REFERENCE_MODE_SELECT] += ctx->hybrid_pred_diff;
719

720
    for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; ++i)
Dmitry Kovalev's avatar
Dmitry Kovalev committed
721
      rd_opt->filter_diff[i] += ctx->best_filter_diff[i];
John Koleszar's avatar
John Koleszar committed
722
  }
Adrian Grange's avatar
Adrian Grange committed
723 724
}

Jim Bankoski's avatar
Jim Bankoski committed
725
void vp9_setup_src_planes(MACROBLOCK *x, const YV12_BUFFER_CONFIG *src,
726 727 728 729 730
                          int mi_row, int mi_col) {
  uint8_t *const buffers[4] = {src->y_buffer, src->u_buffer, src->v_buffer,
                               src->alpha_buffer};
  const int strides[4] = {src->y_stride, src->uv_stride, src->uv_stride,
                          src->alpha_stride};
731 732
  int i;

733 734 735
  // Set current frame pointer.
  x->e_mbd.cur_buf = src;

736 737
  for (i = 0; i < MAX_MB_PLANE; i++)
    setup_pred_plane(&x->plane[i].src, buffers[i], strides[i], mi_row, mi_col,
Jim Bankoski's avatar
Jim Bankoski committed
738
                     NULL, x->e_mbd.plane[i].subsampling_x,
739
                     x->e_mbd.plane[i].subsampling_y);
John Koleszar's avatar
John Koleszar committed
740 741
}

742 743 744 745 746
static void rd_pick_sb_modes(VP9_COMP *cpi, const TileInfo *const tile,
                             int mi_row, int mi_col,
                             int *totalrate, int64_t *totaldist,
                             BLOCK_SIZE bsize, PICK_MODE_CONTEXT *ctx,
                             int64_t best_rd) {
747 748 749
  VP9_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
750
  MB_MODE_INFO *mbmi;
751 752
  struct macroblock_plane *const p = x->plane;
  struct macroblockd_plane *const pd = xd->plane;
753
  const AQ_MODE aq_mode = cpi->oxcf.aq_mode;
754
  int i, orig_rdmult;
755 756
  double rdmult_ratio;

757
  vp9_clear_system_state();
758
  rdmult_ratio = 1.0;  // avoid uninitialized warnings
Ronald S. Bultje's avatar
Ronald S. Bultje committed
759

760
  // Use the lower precision, but faster, 32x32 fdct for mode selection.
761
  x->use_lp32x32fdct = 1;
762

763
  if (bsize < BLOCK_8X8) {
764 765
    // When ab_index = 0 all sub-blocks are handled, so for ab_index != 0
    // there is nothing to be done.
766
    if (x->ab_index != 0) {
767 768
      *totalrate = 0;
      *totaldist = 0;
769
      return;
770
    }
771
  }
772

James Zern's avatar
James Zern committed
773
  set_offsets(cpi, tile, mi_row, mi_col, bsize);
774
  mbmi = &xd->mi[0]->mbmi;
775
  mbmi->sb_type = bsize;
776

777
  for (i = 0; i < MAX_MB_PLANE; ++i) {
778
    p[i].coeff = ctx->coeff_pbuf[i][0];
779
    p[i].qcoeff = ctx->qcoeff_pbuf[i][0];
780
    pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][0];
781
    p[i].eobs = ctx->eobs_pbuf[i][0];
782
  }
783
  ctx->is_coded = 0;
784
  x->skip_recode = 0;
785

786
  // Set to zero to make sure we do not use the previous encoded frame stats
787
  mbmi->skip = 0;
788

789
  x->source_variance = get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
790

791 792 793
  // Save rdmult before it might be changed, so it can be restored later.
  orig_rdmult = x->rdmult;

794
  if (aq_mode == VARIANCE_AQ) {
795 796
    const int energy = bsize <= BLOCK_16X16 ? x->mb_energy
                                            : vp9_block_energy(cpi, x, bsize);
Paul Wilkins's avatar
Paul Wilkins committed
797 798 799
    if (cm->frame_type == KEY_FRAME ||
        cpi->refresh_alt_ref_frame ||
        (cpi->refresh_golden_frame && !cpi->rc.is_src_frame_alt_ref)) {
800
      mbmi->segment_id = vp9_vaq_segment_id(energy);
Paul Wilkins's avatar
Paul Wilkins committed
801 802 803
    } else {
      const uint8_t *const map = cm->seg.update_map ? cpi->segmentation_map
                                                    : cm->last_frame_seg_map;
804
      mbmi->segment_id = vp9_get_segment_id(cm, map, bsize, mi_row, mi_col);
Paul Wilkins's avatar
Paul Wilkins committed
805 806
    }

807
    rdmult_ratio = vp9_vaq_rdmult_ratio(energy);
Dmitry Kovalev's avatar
Dmitry Kovalev committed
808
    vp9_init_plane_quantizers(cpi, x);
809
    vp9_clear_system_state();
810
    x->rdmult = (int)round(x->rdmult * rdmult_ratio);
811
  } else if (aq_mode == COMPLEXITY_AQ) {
812 813
    const int mi_offset = mi_row * cm->mi_cols + mi_col;
    unsigned char complexity = cpi->complexity_map[mi_offset];
Paul Wilkins's avatar
Paul Wilkins committed
814 815
    const int is_edge = (mi_row <= 1) || (mi_row >= (cm->mi_rows - 2)) ||
                        (mi_col <= 1) || (mi_col >= (cm->mi_cols - 2));
816 817
    if (!is_edge && (complexity > 128))
      x->rdmult += ((x->rdmult * (complexity - 128)) / 256);
818
  } else if (aq_mode == CYCLIC_REFRESH_AQ) {
819
    const uint8_t *const map = cm->seg.update_map ? cpi->segmentation_map
820
                                                  : cm->last_frame_seg_map;
821 822
    // If segment 1, use rdmult for that segment.
    if (vp9_get_segment_id(cm, map, bsize, mi_row, mi_col))
823
      x->rdmult = vp9_cyclic_refresh_get_rdmult(cpi->cyclic_refresh);
824
  }
825

826 827
  // Find best coding mode & reconstruct the MB so it is available
  // as a predictor for MBs that follow in the SB
828
  if (frame_is_intra_only(cm)) {
829 830
    vp9_rd_pick_intra_mode_sb(cpi, x, totalrate, totaldist, bsize, ctx,
                              best_rd);
831 832
  } else {
    if (bsize >= BLOCK_8X8)
James Zern's avatar
James Zern committed
833 834
      vp9_rd_pick_inter_mode_sb(cpi, x, tile, mi_row, mi_col,
                                totalrate, totaldist, bsize, ctx, best_rd);
835
    else
James Zern's avatar
James Zern committed
836
      vp9_rd_pick_inter_mode_sub8x8(cpi, x, tile, mi_row, mi_col, totalrate,
837 838
                                    totaldist, bsize, ctx, best_rd);
  }
839

840 841 842 843 844
  x->rdmult = orig_rdmult;

  if (aq_mode == VARIANCE_AQ && *totalrate != INT_MAX) {
    vp9_clear_system_state();
    *totalrate = (int)round(*totalrate * rdmult_ratio);
Paul Wilkins's avatar
Paul Wilkins committed
845
  }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
846
}
Adrian Grange's avatar
Adrian Grange committed
847

848 849
static void update_stats(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
850 851
  const MACROBLOCK *const x = &cpi->mb;
  const MACROBLOCKD *const xd = &x->e_mbd;
852
  const MODE_INFO *const mi = xd->mi[0];
853
  const MB_MODE_INFO *const mbmi = &mi->mbmi;
Adrian Grange's avatar
Adrian Grange committed
854

855
  if (!frame_is_intra_only(cm)) {
856
    const int seg_ref_active = vp9_segfeature_active(&cm->seg, mbmi->segment_id,
857
                                                     SEG_LVL_REF_FRAME);
858 859 860 861 862 863 864 865 866 867 868
    if (!seg_ref_active) {
      FRAME_COUNTS *const counts = &cm->counts;
      const int inter_block = is_inter_block(mbmi);

      counts->intra_inter[vp9_get_intra_inter_context(xd)][inter_block]++;

      // If the segment reference feature is enabled we have only a single
      // reference frame allowed for the segment so exclude it from
      // the reference frame counts used to work out probabilities.
      if (inter_block) {
        const MV_REFERENCE_FRAME ref0 = mbmi->ref_frame[0];
869

870 871 872 873 874 875 876 877 878 879 880 881 882 883
        if (cm->reference_mode == REFERENCE_MODE_SELECT)
          counts->comp_inter[vp9_get_reference_mode_context(cm, xd)]
                            [has_second_ref(mbmi)]++;

        if (has_second_ref(mbmi)) {
          counts->comp_ref[vp9_get_pred_context_comp_ref_p(cm, xd)]
                          [ref0 == GOLDEN_FRAME]++;
        } else {
          counts->single_ref[vp9_get_pred_context_single_ref_p1(xd)][0]
                            [ref0 != LAST_FRAME]++;
          if (ref0 != LAST_FRAME)
            counts->single_ref[vp9_get_pred_context_single_ref_p2(xd)][1]
                              [ref0 != GOLDEN_FRAME]++;
        }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
884
      }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
885
    }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
886 887
  }
}
John Koleszar's avatar
John Koleszar committed
888

889
static BLOCK_SIZE *get_sb_partitioning(MACROBLOCK *x, BLOCK_SIZE bsize) {
890
  switch (bsize) {
891
    case BLOCK_64X64:
892
      return &x->sb64_partitioning;
893
    case BLOCK_32X32:
894
      return &x->sb_partitioning[x->sb_index];
895
    case BLOCK_16X16:
896
      return &x->mb_partitioning[x->sb_index][x->mb_index];
897
    case BLOCK_8X8:
898
      return &x->b_partitioning[x->sb_index][x->mb_index][x->b_index];
899 900
    default:
      assert(0);
901
      return NULL;
902 903 904 905 906 907
  }
}

static void restore_context(VP9_COMP *cpi, int mi_row, int mi_col,
                            ENTROPY_CONTEXT a[16 * MAX_MB_PLANE],
                            ENTROPY_CONTEXT l[16 * MAX_MB_PLANE],
Jim Bankoski's avatar
Jim Bankoski committed
908
                            PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8],
909
                            BLOCK_SIZE bsize) {
Jim Bankoski's avatar
Jim Bankoski committed
910 911
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
912
  int p;
Jim Bankoski's avatar
Jim Bankoski committed
913 914
  const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
  const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
915 916
  int mi_width = num_8x8_blocks_wide_lookup[bsize];
  int mi_height = num_8x8_blocks_high_lookup[bsize];
917
  for (p = 0; p < MAX_MB_PLANE; p++) {
Jim Bankoski's avatar
Jim Bankoski committed
918
    vpx_memcpy(
919
        xd->above_context[p] + ((mi_col * 2) >> xd->plane[p].subsampling_x),
Jim Bankoski's avatar
Jim Bankoski committed
920 921 922
        a + num_4x4_blocks_wide * p,
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_wide) >>
        xd->plane[p].subsampling_x);
Jim Bankoski's avatar
Jim Bankoski committed
923
    vpx_memcpy(
924
        xd->left_context[p]
Jim Bankoski's avatar
Jim Bankoski committed
925 926 927 928 929
            + ((mi_row & MI_MASK) * 2 >> xd->plane[p].subsampling_y),
        l + num_4x4_blocks_high * p,
        (sizeof(ENTROPY_CONTEXT) * num_4x4_blocks_high) >>
        xd->plane[p].subsampling_y);
  }
930 931 932 933
  vpx_memcpy(xd->above_seg_context + mi_col, sa,
             sizeof(*xd->above_seg_context) * mi_width);
  vpx_memcpy(xd->left_seg_context + (mi_row & MI_MASK), sl,
             sizeof(xd->left_seg_context[0]) * mi_height);
934
}
Jim Bankoski's avatar
Jim Bankoski committed
935
static void save_context(VP9_COMP *cpi, int mi_row, int mi_col,
Jim Bankoski's avatar
Jim Bankoski committed
936 937 938
                         ENTROPY_CONTEXT a[16 * MAX_MB_PLANE],
                         ENTROPY_CONTEXT l[16 * MAX_MB_PLANE],
                         PARTITION_CONTEXT sa[8], PARTITION_CONTEXT sl[8],
939
                         BLOCK_SIZE bsize) {
Jim Bankoski's avatar
Jim Bankoski committed
940 941
  const MACROBLOCK *const x = &cpi->mb;
  const MACROBLOCKD *const xd = &x->e_mbd;
Jim Bankoski's avatar
Jim Bankoski committed
942
  int p;
Jim Bankoski's avatar
Jim Bankoski committed
943 944
  const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup[bsize];
  const int num_4x4_blocks_high = num_4x4_blocks_high_lookup[bsize];
Jim Bankoski's avatar
Jim Bankoski committed
945