vp9_tokenize.c 32.6 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 11 12 13 14 15
 */


#include <math.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
16 17
#include "vp9/encoder/vp9_onyx_int.h"
#include "vp9/encoder/vp9_tokenize.h"
John Koleszar's avatar
John Koleszar committed
18 19
#include "vpx_mem/vpx_mem.h"

20 21 22
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_entropy.h"
23

John Koleszar's avatar
John Koleszar committed
24
/* Global event counters used for accumulating statistics across several
25
   compressions, then generating vp9_context.c = initial stats. */
John Koleszar's avatar
John Koleszar committed
26 27

#ifdef ENTROPY_STATS
28 29 30
vp9_coeff_accum context_counters_4x4[BLOCK_TYPES];
vp9_coeff_accum context_counters_8x8[BLOCK_TYPES];
vp9_coeff_accum context_counters_16x16[BLOCK_TYPES];
31
vp9_coeff_accum context_counters_32x32[BLOCK_TYPES];
32

33 34 35
extern vp9_coeff_stats tree_update_hist_4x4[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_8x8[BLOCK_TYPES];
extern vp9_coeff_stats tree_update_hist_16x16[BLOCK_TYPES];
36
extern vp9_coeff_stats tree_update_hist_32x32[BLOCK_TYPES];
37 38
#endif  /* ENTROPY_STATS */

39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
#if CONFIG_CODE_NONZEROCOUNT
#ifdef NZC_STATS
unsigned int nzc_counts_4x4[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                           [NZC4X4_TOKENS];
unsigned int nzc_counts_8x8[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                           [NZC8X8_TOKENS];
unsigned int nzc_counts_16x16[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                             [NZC16X16_TOKENS];
unsigned int nzc_counts_32x32[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                             [NZC32X32_TOKENS];
unsigned int nzc_pcat_counts[MAX_NZC_CONTEXTS][NZC_TOKENS_EXTRA]
                            [NZC_BITS_EXTRA][2];
#endif
#endif

John Koleszar's avatar
John Koleszar committed
54
static TOKENVALUE dct_value_tokens[DCT_MAX_VALUE * 2];
55
const TOKENVALUE *vp9_dct_value_tokens_ptr;
John Koleszar's avatar
John Koleszar committed
56
static int dct_value_cost[DCT_MAX_VALUE * 2];
57
const int *vp9_dct_value_cost_ptr;
58

John Koleszar's avatar
John Koleszar committed
59
static void fill_value_tokens() {
John Koleszar's avatar
John Koleszar committed
60

John Koleszar's avatar
John Koleszar committed
61
  TOKENVALUE *const t = dct_value_tokens + DCT_MAX_VALUE;
62
  vp9_extra_bit_struct *const e = vp9_extra_bits;
John Koleszar's avatar
John Koleszar committed
63

John Koleszar's avatar
John Koleszar committed
64 65
  int i = -DCT_MAX_VALUE;
  int sign = 1;
John Koleszar's avatar
John Koleszar committed
66

John Koleszar's avatar
John Koleszar committed
67 68 69
  do {
    if (!i)
      sign = 0;
John Koleszar's avatar
John Koleszar committed
70

John Koleszar's avatar
John Koleszar committed
71 72 73
    {
      const int a = sign ? -i : i;
      int eb = sign;
John Koleszar's avatar
John Koleszar committed
74

John Koleszar's avatar
John Koleszar committed
75 76
      if (a > 4) {
        int j = 4;
John Koleszar's avatar
John Koleszar committed
77

John Koleszar's avatar
John Koleszar committed
78
        while (++j < 11  &&  e[j].base_val <= a) {}
John Koleszar's avatar
John Koleszar committed
79

John Koleszar's avatar
John Koleszar committed
80 81 82 83
        t[i].Token = --j;
        eb |= (a - e[j].base_val) << 1;
      } else
        t[i].Token = a;
John Koleszar's avatar
John Koleszar committed
84

John Koleszar's avatar
John Koleszar committed
85 86
      t[i].Extra = eb;
    }
John Koleszar's avatar
John Koleszar committed
87

John Koleszar's avatar
John Koleszar committed
88 89 90
    // initialize the cost for extra bits for all possible coefficient value.
    {
      int cost = 0;
91
      vp9_extra_bit_struct *p = vp9_extra_bits + t[i].Token;
John Koleszar's avatar
John Koleszar committed
92

John Koleszar's avatar
John Koleszar committed
93 94 95
      if (p->base_val) {
        const int extra = t[i].Extra;
        const int Length = p->Len;
John Koleszar's avatar
John Koleszar committed
96

John Koleszar's avatar
John Koleszar committed
97
        if (Length)
98
          cost += treed_cost(p->tree, p->prob, extra >> 1, Length);
John Koleszar's avatar
John Koleszar committed
99

100
        cost += vp9_cost_bit(vp9_prob_half, extra & 1); /* sign */
John Koleszar's avatar
John Koleszar committed
101 102
        dct_value_cost[i + DCT_MAX_VALUE] = cost;
      }
John Koleszar's avatar
John Koleszar committed
103 104 105

    }

John Koleszar's avatar
John Koleszar committed
106 107
  } while (++i < DCT_MAX_VALUE);

108 109
  vp9_dct_value_tokens_ptr = dct_value_tokens + DCT_MAX_VALUE;
  vp9_dct_value_cost_ptr   = dct_value_cost + DCT_MAX_VALUE;
John Koleszar's avatar
John Koleszar committed
110
}
111

112 113
extern const int *vp9_get_coef_neighbors_handle(const int *scan, int *pad);

114
static void tokenize_b(VP9_COMP *cpi,
115
                       MACROBLOCKD *xd,
Yaowu Xu's avatar
Yaowu Xu committed
116
                       const int ib,
117 118 119
                       TOKENEXTRA **tp,
                       PLANE_TYPE type,
                       TX_SIZE tx_size,
John Koleszar's avatar
John Koleszar committed
120
                       int y_blocks,
121
                       int dry_run) {
122
  MB_MODE_INFO *mbmi = &xd->mode_info_context->mbmi;
Daniel Kang's avatar
Daniel Kang committed
123
  int pt; /* near block/prev token context index */
124
  int c = 0;
Daniel Kang's avatar
Daniel Kang committed
125
  TOKENEXTRA *t = *tp;        /* store tokens starting here */
John Koleszar's avatar
John Koleszar committed
126 127
  const struct plane_block_idx pb_idx = plane_block_idx(y_blocks, ib);
  const int eob = xd->plane[pb_idx.plane].eobs[pb_idx.block];
128 129
  const int16_t *qcoeff_ptr = BLOCK_OFFSET(xd->plane[pb_idx.plane].qcoeff,
                                           pb_idx.block, 16);
130
  int seg_eob, default_eob, pad;
131 132
  const int segment_id = mbmi->segment_id;
  const BLOCK_SIZE_TYPE sb_type = mbmi->sb_type;
133
  const int *scan, *nb;
134 135
  vp9_coeff_count *counts;
  vp9_coeff_probs *probs;
136 137
  const int ref = mbmi->ref_frame != INTRA_FRAME;
  ENTROPY_CONTEXT *a, *l, *a1, *l1, *a2, *l2, *a3, *l3, a_ec, l_ec;
138
  uint8_t token_cache[1024];
139
#if CONFIG_CODE_NONZEROCOUNT
140 141
  const int nzc_used = get_nzc_used(tx_size);
  int zerosleft = 0, nzc = 0;
142 143 144
  if (eob == 0)
    assert(xd->nzcs[ib] == 0);
#endif
145

John Koleszar's avatar
John Koleszar committed
146
  assert((!type && !pb_idx.plane) || (type && pb_idx.plane));
147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167
  if (sb_type == BLOCK_SIZE_SB64X64) {
    a = (ENTROPY_CONTEXT *)xd->above_context +
                                             vp9_block2above_sb64[tx_size][ib];
    l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb64[tx_size][ib];
    a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    a2 = a1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    l2 = l1 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    a3 = a2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    l3 = l2 + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
  } else if (sb_type == BLOCK_SIZE_SB32X32) {
    a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above_sb[tx_size][ib];
    l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left_sb[tx_size][ib];
    a1 = a + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    l1 = l + sizeof(ENTROPY_CONTEXT_PLANES) / sizeof(ENTROPY_CONTEXT);
    a2 = a3 = l2 = l3 = NULL;
  } else {
    a = (ENTROPY_CONTEXT *)xd->above_context + vp9_block2above[tx_size][ib];
    l = (ENTROPY_CONTEXT *)xd->left_context + vp9_block2left[tx_size][ib];
    a1 = l1 = a2 = l2 = a3 = l3 = NULL;
  }
168

169 170
  switch (tx_size) {
    default:
171 172 173
    case TX_4X4: {
      const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
                              get_tx_type_4x4(xd, ib) : DCT_DCT;
174 175
      a_ec = *a;
      l_ec = *l;
176
      seg_eob = 16;
177
      scan = vp9_default_zig_zag1d_4x4;
178 179
      if (tx_type != DCT_DCT) {
        if (tx_type == ADST_DCT) {
180
          scan = vp9_row_scan_4x4;
181
        } else if (tx_type == DCT_ADST) {
182
          scan = vp9_col_scan_4x4;
183 184
        }
      }
185 186
      counts = cpi->coef_counts_4x4;
      probs = cpi->common.fc.coef_probs_4x4;
187
      break;
188
    }
189
    case TX_8X8: {
190 191
      const int sz = 3 + mb_width_log2(sb_type);
      const int x = ib & ((1 << sz) - 1), y = ib - x;
192 193
      const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
                              get_tx_type_8x8(xd, y + (x >> 1)) : DCT_DCT;
194 195 196 197
      a_ec = (a[0] + a[1]) != 0;
      l_ec = (l[0] + l[1]) != 0;
      seg_eob = 64;
      scan = vp9_default_zig_zag1d_8x8;
198 199 200 201 202 203 204
      if (tx_type != DCT_DCT) {
        if (tx_type == ADST_DCT) {
          scan = vp9_row_scan_8x8;
        } else if (tx_type == DCT_ADST) {
          scan = vp9_col_scan_8x8;
        }
      }
205 206
      counts = cpi->coef_counts_8x8;
      probs = cpi->common.fc.coef_probs_8x8;
207
      break;
208 209
    }
    case TX_16X16: {
210 211
      const int sz = 4 + mb_width_log2(sb_type);
      const int x = ib & ((1 << sz) - 1), y = ib - x;
212 213
      const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
                              get_tx_type_16x16(xd, y + (x >> 2)) : DCT_DCT;
Yaowu Xu's avatar
Yaowu Xu committed
214 215 216
      if (type != PLANE_TYPE_UV) {
        a_ec = (a[0] + a[1] + a[2] + a[3]) != 0;
        l_ec = (l[0] + l[1] + l[2] + l[3]) != 0;
217 218 219
      } else {
        a_ec = (a[0] + a[1] + a1[0] + a1[1]) != 0;
        l_ec = (l[0] + l[1] + l1[0] + l1[1]) != 0;
Yaowu Xu's avatar
Yaowu Xu committed
220
      }
221
      seg_eob = 256;
222
      scan = vp9_default_zig_zag1d_16x16;
223 224 225 226 227 228 229
      if (tx_type != DCT_DCT) {
        if (tx_type == ADST_DCT) {
          scan = vp9_row_scan_16x16;
        } else if (tx_type == DCT_ADST) {
          scan = vp9_col_scan_16x16;
        }
      }
230 231
      counts = cpi->coef_counts_16x16;
      probs = cpi->common.fc.coef_probs_16x16;
232
      break;
233
    }
234
    case TX_32X32:
235 236 237 238 239 240 241 242 243 244 245
      if (type != PLANE_TYPE_UV) {
        a_ec = (a[0] + a[1] + a[2] + a[3] +
                a1[0] + a1[1] + a1[2] + a1[3]) != 0;
        l_ec = (l[0] + l[1] + l[2] + l[3] +
                l1[0] + l1[1] + l1[2] + l1[3]) != 0;
      } else {
        a_ec = (a[0] + a[1] + a1[0] + a1[1] +
                a2[0] + a2[1] + a3[0] + a3[1]) != 0;
        l_ec = (l[0] + l[1] + l1[0] + l1[1] +
                l2[0] + l2[1] + l3[0] + l3[1]) != 0;
      }
246 247 248 249
      seg_eob = 1024;
      scan = vp9_default_zig_zag1d_32x32;
      counts = cpi->coef_counts_32x32;
      probs = cpi->common.fc.coef_probs_32x32;
250
      break;
John Koleszar's avatar
John Koleszar committed
251 252
  }

Yaowu Xu's avatar
Yaowu Xu committed
253
  VP9_COMBINEENTROPYCONTEXTS(pt, a_ec, l_ec);
254 255
  nb = vp9_get_coef_neighbors_handle(scan, &pad);
  default_eob = seg_eob;
Yaowu Xu's avatar
Yaowu Xu committed
256

Paul Wilkins's avatar
Paul Wilkins committed
257 258
  if (vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP))
    seg_eob = 0;
John Koleszar's avatar
John Koleszar committed
259

260
  do {
261
    const int band = get_coef_band(scan, tx_size, c);
262
    int token;
263 264
    int v = 0;
#if CONFIG_CODE_NONZEROCOUNT
265 266
    if (nzc_used)
      zerosleft = seg_eob - xd->nzcs[ib] - c + nzc;
267
#endif
268
    if (c < eob) {
269
      const int rc = scan[c];
270
      v = qcoeff_ptr[rc];
271 272
      assert(-DCT_MAX_VALUE <= v  &&  v < DCT_MAX_VALUE);

273 274
      t->Extra = vp9_dct_value_tokens_ptr[v].Extra;
      token    = vp9_dct_value_tokens_ptr[v].Token;
275
    } else {
276
#if CONFIG_CODE_NONZEROCOUNT
277 278 279
      if (nzc_used)
        break;
      else
280
#endif
281
        token = DCT_EOB_TOKEN;
282
    }
John Koleszar's avatar
John Koleszar committed
283 284

    t->Token = token;
285
    t->context_tree = probs[type][ref][band][pt];
286 287
#if CONFIG_CODE_NONZEROCOUNT
    // Skip zero node if there are no zeros left
288 289 290
    if (nzc_used)
      t->skip_eob_node = 1 + (zerosleft == 0);
    else
291
#endif
292
      t->skip_eob_node = (c > 0) && (token_cache[c - 1] == 0);
293
    assert(vp9_coef_encodings[t->Token].Len - t->skip_eob_node > 0);
294
    if (!dry_run) {
295
      ++counts[type][ref][band][pt][token];
296 297
      if (!t->skip_eob_node)
        ++cpi->common.fc.eob_branch_counts[tx_size][type][ref][band][pt];
298
    }
299 300 301
#if CONFIG_CODE_NONZEROCOUNT
    nzc += (v != 0);
#endif
302
    token_cache[c] = token;
303

304
    pt = vp9_get_coef_context(scan, nb, pad, token_cache, c + 1, default_eob);
305
    ++t;
306
  } while (c < eob && ++c < seg_eob);
307 308 309
#if CONFIG_CODE_NONZEROCOUNT
  assert(nzc == xd->nzcs[ib]);
#endif
310 311

  *tp = t;
312
  a_ec = l_ec = (c > 0); /* 0 <-> all coeff data is zero */
Yaowu Xu's avatar
Yaowu Xu committed
313 314 315
  a[0] = a_ec;
  l[0] = l_ec;

316
  if (tx_size == TX_8X8) {
Yaowu Xu's avatar
Yaowu Xu committed
317 318 319
    a[1] = a_ec;
    l[1] = l_ec;
  } else if (tx_size == TX_16X16) {
Yaowu Xu's avatar
Yaowu Xu committed
320 321 322 323
    if (type != PLANE_TYPE_UV) {
      a[1] = a[2] = a[3] = a_ec;
      l[1] = l[2] = l[3] = l_ec;
    } else {
324 325
      a1[0] = a1[1] = a[1] = a_ec;
      l1[0] = l1[1] = l[1] = l_ec;
Yaowu Xu's avatar
Yaowu Xu committed
326
    }
327
  } else if (tx_size == TX_32X32) {
328 329 330 331 332 333 334 335 336 337 338
    if (type != PLANE_TYPE_UV) {
      a[1] = a[2] = a[3] = a_ec;
      l[1] = l[2] = l[3] = l_ec;
      a1[0] = a1[1] = a1[2] = a1[3] = a_ec;
      l1[0] = l1[1] = l1[2] = l1[3] = l_ec;
    } else {
      a[1] = a1[0] = a1[1] = a_ec;
      l[1] = l1[0] = l1[1] = l_ec;
      a2[0] = a2[1] = a3[0] = a3[1] = a_ec;
      l2[0] = l2[1] = l3[0] = l3[1] = l_ec;
    }
Yaowu Xu's avatar
Yaowu Xu committed
339
  }
John Koleszar's avatar
John Koleszar committed
340 341
}

342
int vp9_mby_is_skippable_4x4(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
343 344
  int skip = 1;
  int i = 0;
345

346
  for (i = 0; i < 16; i++)
John Koleszar's avatar
John Koleszar committed
347
    skip &= (!xd->plane[0].eobs[i]);
348

John Koleszar's avatar
John Koleszar committed
349
  return skip;
350
}
351

352
int vp9_mbuv_is_skippable_4x4(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
353 354
  int skip = 1;
  int i;
355

John Koleszar's avatar
John Koleszar committed
356 357 358 359
  for (i = 0; i < 4; i++)
    skip &= (!xd->plane[1].eobs[i]);
  for (i = 0; i < 4; i++)
    skip &= (!xd->plane[2].eobs[i]);
John Koleszar's avatar
John Koleszar committed
360
  return skip;
361 362
}

363 364
static int mb_is_skippable_4x4(MACROBLOCKD *xd) {
  return (vp9_mby_is_skippable_4x4(xd) &
365
          vp9_mbuv_is_skippable_4x4(xd));
366
}
Yaowu Xu's avatar
Yaowu Xu committed
367

368
int vp9_mby_is_skippable_8x8(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
369 370
  int skip = 1;
  int i = 0;
371

372
  for (i = 0; i < 16; i += 4)
John Koleszar's avatar
John Koleszar committed
373
    skip &= (!xd->plane[0].eobs[i]);
374

John Koleszar's avatar
John Koleszar committed
375
  return skip;
376
}
377

378
int vp9_mbuv_is_skippable_8x8(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
379
  return (!xd->plane[1].eobs[0]) & (!xd->plane[2].eobs[0]);
380
}
381

382 383
static int mb_is_skippable_8x8(MACROBLOCKD *xd) {
  return (vp9_mby_is_skippable_8x8(xd) &
384
          vp9_mbuv_is_skippable_8x8(xd));
Deb Mukherjee's avatar
Deb Mukherjee committed
385 386
}

387 388
static int mb_is_skippable_8x8_4x4uv(MACROBLOCKD *xd) {
  return (vp9_mby_is_skippable_8x8(xd) &
389
          vp9_mbuv_is_skippable_4x4(xd));
390
}
Yaowu Xu's avatar
Yaowu Xu committed
391

392
int vp9_mby_is_skippable_16x16(MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
393
  return (!xd->plane[0].eobs[0]);
Daniel Kang's avatar
Daniel Kang committed
394 395
}

396 397
static int mb_is_skippable_16x16(MACROBLOCKD *xd) {
  return (vp9_mby_is_skippable_16x16(xd) & vp9_mbuv_is_skippable_8x8(xd));
Daniel Kang's avatar
Daniel Kang committed
398
}
399

400 401 402 403
int vp9_sby_is_skippable(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize,
                         TX_SIZE sz) {
  const int inc = 1 << (sz * 2);
  const int bwl = mb_width_log2(bsize) + 2, bhl = mb_height_log2(bsize) + 2;
404 405 406
  int skip = 1;
  int i = 0;

407
  for (i = 0; i < (1 << (bwl + bhl)); i += inc)
John Koleszar's avatar
John Koleszar committed
408
    skip &= (!xd->plane[0].eobs[i]);
409 410 411 412

  return skip;
}

413 414 415
int vp9_sbuv_is_skippable(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize, TX_SIZE sz) {
  const int inc = 1 << (sz * 2);
  const int bwl = mb_width_log2(bsize) + 1, bhl = mb_height_log2(bsize) + 1;
416 417 418
  int skip = 1;
  int i = 0;

419
  for (i = 0; i < (1 << (bwl + bhl)); i += inc) {
John Koleszar's avatar
John Koleszar committed
420 421
    skip &= (!xd->plane[1].eobs[i]);
    skip &= (!xd->plane[2].eobs[i]);
422
  }
423 424 425 426

  return skip;
}

427 428 429 430
static int sb_is_skippable(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize,
                           TX_SIZE ysz, TX_SIZE uvsz) {
  return vp9_sby_is_skippable(xd, bsize, ysz) &
         vp9_sbuv_is_skippable(xd, bsize, uvsz);
431 432
}

433 434 435
void vp9_tokenize_sb(VP9_COMP *cpi,
                     MACROBLOCKD *xd,
                     TOKENEXTRA **t,
436 437
                     int dry_run, BLOCK_SIZE_TYPE bsize) {
  const int bwl = mb_width_log2(bsize) + 2, bhl = mb_height_log2(bsize) + 2;
438 439 440 441 442
  VP9_COMMON * const cm = &cpi->common;
  MB_MODE_INFO * const mbmi = &xd->mode_info_context->mbmi;
  TOKENEXTRA *t_backup = *t;
  const int mb_skip_context = vp9_get_pred_context(cm, xd, PRED_MBSKIP);
  const int segment_id = mbmi->segment_id;
Paul Wilkins's avatar
Paul Wilkins committed
443
  const int skip_inc = !vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP);
444 445 446 447 448
  const TX_SIZE txfm_size = mbmi->txfm_size;
  const TX_SIZE uv_txfm_size = (bsize < BLOCK_SIZE_SB32X32 &&
                                txfm_size == TX_16X16) ? TX_8X8 :
                               (bsize < BLOCK_SIZE_SB64X64 &&
                                txfm_size == TX_32X32) ? TX_16X16 : txfm_size;
449
  int b;
450
  const int n_y = (1 << (bwl + bhl)), n_uv = (n_y * 3) >> 1;
451

452
  mbmi->mb_skip_coeff = sb_is_skippable(xd, bsize, txfm_size, uv_txfm_size);
453 454 455 456 457

  if (mbmi->mb_skip_coeff) {
    if (!dry_run)
      cpi->skip_true_count[mb_skip_context] += skip_inc;
    if (!cm->mb_no_coeff_skip) {
458
      vp9_stuff_sb(cpi, xd, t, dry_run, bsize);
459
    } else {
460
      vp9_reset_sb_tokens_context(xd, bsize);
461 462 463 464 465 466 467 468 469
    }
    if (dry_run)
      *t = t_backup;
    return;
  }

  if (!dry_run)
    cpi->skip_false_count[mb_skip_context] += skip_inc;

470
  switch (txfm_size) {
471
    case TX_32X32:
472
      for (b = 0; b < n_y; b += 64)
473
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
474 475 476 477 478 479 480 481 482 483 484 485
                   TX_32X32, n_y, dry_run);
      if (uv_txfm_size == TX_32X32) {
        assert(bsize == BLOCK_SIZE_SB64X64);
        tokenize_b(cpi, xd, 256, t, PLANE_TYPE_UV,
                   TX_32X32, n_y, dry_run);
        tokenize_b(cpi, xd, 320, t, PLANE_TYPE_UV,
                   TX_32X32, n_y, dry_run);
      } else {
        for (; b < n_uv; b += 16)
          tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
                     TX_16X16, n_y, dry_run);
      }
486 487
      break;
    case TX_16X16:
488
      for (b = 0; b < n_y; b += 16)
489
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
490 491 492 493 494 495 496 497 498 499
                   TX_16X16, n_y, dry_run);
      if (uv_txfm_size == TX_16X16) {
        for (; b < n_uv; b += 16)
          tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
                     TX_16X16, n_y, dry_run);
      } else {
        for (; b < n_uv; b += 4)
          tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
                     TX_8X8, n_y, dry_run);
      }
500 501
      break;
    case TX_8X8:
502
      for (b = 0; b < n_y; b += 4)
503
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
504 505
                   TX_8X8, n_y, dry_run);
      for (; b < n_uv; b += 4)
506
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
507
                   TX_8X8, n_y, dry_run);
508 509
      break;
    case TX_4X4:
510
      for (b = 0; b < n_y; b++)
511
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC,
512 513
                   TX_4X4, n_y, dry_run);
      for (; b < n_uv; b++)
514
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV,
515
                   TX_4X4, n_y, dry_run);
516 517
      break;
    default: assert(0);
518
  }
519

520 521 522 523
  if (dry_run)
    *t = t_backup;
}

524
void vp9_tokenize_mb(VP9_COMP *cpi,
Paul Wilkins's avatar
Paul Wilkins committed
525
                     MACROBLOCKD *xd,
526 527
                     TOKENEXTRA **t,
                     int dry_run) {
John Koleszar's avatar
John Koleszar committed
528
  int b;
529
  int tx_size = xd->mode_info_context->mbmi.txfm_size;
Paul Wilkins's avatar
Paul Wilkins committed
530
  int mb_skip_context = vp9_get_pred_context(&cpi->common, xd, PRED_MBSKIP);
531
  TOKENEXTRA *t_backup = *t;
Paul Wilkins's avatar
Paul Wilkins committed
532

John Koleszar's avatar
John Koleszar committed
533 534 535 536
  // If the MB is going to be skipped because of a segment level flag
  // exclude this from the skip count stats used to calculate the
  // transmitted skip probability;
  int skip_inc;
Paul Wilkins's avatar
Paul Wilkins committed
537
  int segment_id = xd->mode_info_context->mbmi.segment_id;
538

Paul Wilkins's avatar
Paul Wilkins committed
539
  if (!vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
John Koleszar's avatar
John Koleszar committed
540 541 542
    skip_inc = 1;
  } else
    skip_inc = 0;
543

544
  switch (tx_size) {
Daniel Kang's avatar
Daniel Kang committed
545
    case TX_16X16:
546

Daniel Kang's avatar
Daniel Kang committed
547
      xd->mode_info_context->mbmi.mb_skip_coeff = mb_is_skippable_16x16(xd);
Daniel Kang's avatar
Daniel Kang committed
548 549
      break;
    case TX_8X8:
550 551
      if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
          xd->mode_info_context->mbmi.mode == SPLITMV)
552
        xd->mode_info_context->mbmi.mb_skip_coeff =
553
            mb_is_skippable_8x8_4x4uv(xd);
Deb Mukherjee's avatar
Deb Mukherjee committed
554
      else
555
        xd->mode_info_context->mbmi.mb_skip_coeff =
556
            mb_is_skippable_8x8(xd);
Daniel Kang's avatar
Daniel Kang committed
557
      break;
Deb Mukherjee's avatar
Deb Mukherjee committed
558

Daniel Kang's avatar
Daniel Kang committed
559
    default:
560
      xd->mode_info_context->mbmi.mb_skip_coeff =
561
          mb_is_skippable_4x4(xd);
Daniel Kang's avatar
Daniel Kang committed
562 563
      break;
  }
564

Paul Wilkins's avatar
Paul Wilkins committed
565
  if (xd->mode_info_context->mbmi.mb_skip_coeff) {
566 567
    if (!dry_run)
      cpi->skip_true_count[mb_skip_context] += skip_inc;
John Koleszar's avatar
John Koleszar committed
568
    if (!cpi->common.mb_no_coeff_skip) {
569
      vp9_stuff_mb(cpi, xd, t, dry_run);
John Koleszar's avatar
John Koleszar committed
570
    } else {
Yaowu Xu's avatar
Yaowu Xu committed
571
      vp9_reset_mb_tokens_context(xd);
John Koleszar's avatar
John Koleszar committed
572
    }
Yaowu Xu's avatar
Yaowu Xu committed
573

574 575
    if (dry_run)
      *t = t_backup;
John Koleszar's avatar
John Koleszar committed
576 577 578
    return;
  }

579 580
  if (!dry_run)
    cpi->skip_false_count[mb_skip_context] += skip_inc;
581

582
  if (tx_size == TX_16X16) {
John Koleszar's avatar
John Koleszar committed
583
    tokenize_b(cpi, xd, 0, t, PLANE_TYPE_Y_WITH_DC, TX_16X16, 16, dry_run);
Daniel Kang's avatar
Daniel Kang committed
584
    for (b = 16; b < 24; b += 4) {
John Koleszar's avatar
John Koleszar committed
585
      tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, 16, dry_run);
Daniel Kang's avatar
Daniel Kang committed
586
    }
587
  } else if (tx_size == TX_8X8) {
John Koleszar's avatar
John Koleszar committed
588
    for (b = 0; b < 16; b += 4) {
John Koleszar's avatar
John Koleszar committed
589
      tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_8X8, 16, dry_run);
John Koleszar's avatar
John Koleszar committed
590
    }
591 592
    if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
        xd->mode_info_context->mbmi.mode == SPLITMV) {
593
      for (b = 16; b < 24; b++) {
John Koleszar's avatar
John Koleszar committed
594
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, 16, dry_run);
595
      }
596
    } else {
Deb Mukherjee's avatar
Deb Mukherjee committed
597
      for (b = 16; b < 24; b += 4) {
John Koleszar's avatar
John Koleszar committed
598
        tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_8X8, 16, dry_run);
Deb Mukherjee's avatar
Deb Mukherjee committed
599
      }
600
    }
Jingning Han's avatar
Jingning Han committed
601
  } else {
602
    for (b = 0; b < 16; b++)
John Koleszar's avatar
John Koleszar committed
603
      tokenize_b(cpi, xd, b, t, PLANE_TYPE_Y_WITH_DC, TX_4X4, 16, dry_run);
604
    for (b = 16; b < 24; b++)
John Koleszar's avatar
John Koleszar committed
605
      tokenize_b(cpi, xd, b, t, PLANE_TYPE_UV, TX_4X4, 16, dry_run);
Jingning Han's avatar
Jingning Han committed
606
  }
607 608
  if (dry_run)
    *t = t_backup;
John Koleszar's avatar
John Koleszar committed
609
}
610

John Koleszar's avatar
John Koleszar committed
611
#ifdef ENTROPY_STATS
John Koleszar's avatar
John Koleszar committed
612 613 614
void init_context_counters(void) {
  FILE *f = fopen("context.bin", "rb");
  if (!f) {
615
    vpx_memset(context_counters_4x4, 0, sizeof(context_counters_4x4));
John Koleszar's avatar
John Koleszar committed
616
    vpx_memset(context_counters_8x8, 0, sizeof(context_counters_8x8));
Daniel Kang's avatar
Daniel Kang committed
617
    vpx_memset(context_counters_16x16, 0, sizeof(context_counters_16x16));
618
    vpx_memset(context_counters_32x32, 0, sizeof(context_counters_32x32));
John Koleszar's avatar
John Koleszar committed
619
  } else {
620
    fread(context_counters_4x4, sizeof(context_counters_4x4), 1, f);
John Koleszar's avatar
John Koleszar committed
621
    fread(context_counters_8x8, sizeof(context_counters_8x8), 1, f);
Daniel Kang's avatar
Daniel Kang committed
622
    fread(context_counters_16x16, sizeof(context_counters_16x16), 1, f);
623
    fread(context_counters_32x32, sizeof(context_counters_32x32), 1, f);
John Koleszar's avatar
John Koleszar committed
624 625 626 627 628
    fclose(f);
  }

  f = fopen("treeupdate.bin", "rb");
  if (!f) {
629
    vpx_memset(tree_update_hist_4x4, 0, sizeof(tree_update_hist_4x4));
John Koleszar's avatar
John Koleszar committed
630
    vpx_memset(tree_update_hist_8x8, 0, sizeof(tree_update_hist_8x8));
Daniel Kang's avatar
Daniel Kang committed
631
    vpx_memset(tree_update_hist_16x16, 0, sizeof(tree_update_hist_16x16));
632
    vpx_memset(tree_update_hist_32x32, 0, sizeof(tree_update_hist_32x32));
John Koleszar's avatar
John Koleszar committed
633
  } else {
634
    fread(tree_update_hist_4x4, sizeof(tree_update_hist_4x4), 1, f);
John Koleszar's avatar
John Koleszar committed
635
    fread(tree_update_hist_8x8, sizeof(tree_update_hist_8x8), 1, f);
Daniel Kang's avatar
Daniel Kang committed
636
    fread(tree_update_hist_16x16, sizeof(tree_update_hist_16x16), 1, f);
637
    fread(tree_update_hist_32x32, sizeof(tree_update_hist_32x32), 1, f);
John Koleszar's avatar
John Koleszar committed
638 639
    fclose(f);
  }
John Koleszar's avatar
John Koleszar committed
640 641
}

642 643
static void print_counter(FILE *f, vp9_coeff_accum *context_counters,
                          int block_types, const char *header) {
644
  int type, ref, band, pt, t;
John Koleszar's avatar
John Koleszar committed
645

646
  fprintf(f, "static const vp9_coeff_count %s = {\n", header);
John Koleszar's avatar
John Koleszar committed
647

648
#define Comma(X) (X ? "," : "")
John Koleszar's avatar
John Koleszar committed
649 650
  type = 0;
  do {
651
    ref = 0;
John Koleszar's avatar
John Koleszar committed
652 653
    fprintf(f, "%s\n  { /* block Type %d */", Comma(type), type);
    do {
654 655
      fprintf(f, "%s\n    { /* %s */", Comma(type), ref ? "Inter" : "Intra");
      band = 0;
John Koleszar's avatar
John Koleszar committed
656
      do {
657 658
        fprintf(f, "%s\n      { /* Coeff Band %d */", Comma(band), band);
        pt = 0;
John Koleszar's avatar
John Koleszar committed
659
        do {
660 661 662 663 664 665 666 667 668
          fprintf(f, "%s\n        {", Comma(pt));

          t = 0;
          do {
            const int64_t x = context_counters[type][ref][band][pt][t];
            const int y = (int) x;

            assert(x == (int64_t) y);  /* no overflow handling yet */
            fprintf(f, "%s %d", Comma(t), y);
669
          } while (++t < 1 + MAX_ENTROPY_TOKENS);
670 671 672 673
          fprintf(f, "}");
        } while (++pt < PREV_COEF_CONTEXTS);
        fprintf(f, "\n      }");
      } while (++band < COEF_BANDS);
John Koleszar's avatar
John Koleszar committed
674
      fprintf(f, "\n    }");
675
    } while (++ref < REF_TYPES);
John Koleszar's avatar
John Koleszar committed
676
    fprintf(f, "\n  }");
677
  } while (++type < block_types);
Daniel Kang's avatar
Daniel Kang committed
678
  fprintf(f, "\n};\n");
679
}
680

681 682
static void print_probs(FILE *f, vp9_coeff_accum *context_counters,
                        int block_types, const char *header) {
683
  int type, ref, band, pt, t;
Daniel Kang's avatar
Daniel Kang committed
684

685
  fprintf(f, "static const vp9_coeff_probs %s = {", header);
686

John Koleszar's avatar
John Koleszar committed
687
  type = 0;
688
#define Newline(x, spaces) (x ? " " : "\n" spaces)
John Koleszar's avatar
John Koleszar committed
689
  do {
690 691
    fprintf(f, "%s%s{ /* block Type %d */",
            Comma(type), Newline(type, "  "), type);
692
    ref = 0;
John Koleszar's avatar
John Koleszar committed
693
    do {
694 695 696
      fprintf(f, "%s%s{ /* %s */",
              Comma(band), Newline(band, "    "), ref ? "Inter" : "Intra");
      band = 0;
John Koleszar's avatar
John Koleszar committed
697
      do {
698 699 700
        fprintf(f, "%s%s{ /* Coeff Band %d */",
                Comma(band), Newline(band, "      "), band);
        pt = 0;
John Koleszar's avatar
John Koleszar committed
701
        do {
702
          unsigned int branch_ct[ENTROPY_NODES][2];
703
          unsigned int coef_counts[MAX_ENTROPY_TOKENS + 1];
704 705
          vp9_prob coef_probs[ENTROPY_NODES];

706 707 708
          if (pt >= 3 && band == 0)
            break;
          for (t = 0; t < MAX_ENTROPY_TOKENS + 1; ++t)
709
            coef_counts[t] = context_counters[type][ref][band][pt][t];
710 711
          vp9_tree_probs_from_distribution(vp9_coef_tree, coef_probs,
                                           branch_ct, coef_counts, 0);
712 713
          branch_ct[0][1] = coef_counts[MAX_ENTROPY_TOKENS] - branch_ct[0][0];
          coef_probs[0] = get_binary_prob(branch_ct[0][0], branch_ct[0][1]);
714 715 716 717 718 719 720 721 722 723 724
          fprintf(f, "%s\n      {", Comma(pt));

          t = 0;
          do {
            fprintf(f, "%s %3d", Comma(t), coef_probs[t]);
          } while (++t < ENTROPY_NODES);

          fprintf(f, " }");
        } while (++pt < PREV_COEF_CONTEXTS);
        fprintf(f, "\n      }");
      } while (++band < COEF_BANDS);
John Koleszar's avatar
John Koleszar committed
725
      fprintf(f, "\n    }");
726
    } while (++ref < REF_TYPES);