vp9_bitstream.c 100 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
#include <assert.h>
#include <stdio.h>
#include <limits.h>
John Koleszar's avatar
John Koleszar committed
14

15
#include "vp9/common/vp9_header.h"
16
#include "vp9/encoder/vp9_encodemv.h"
17
#include "vp9/common/vp9_entropymode.h"
18
#include "vp9/common/vp9_entropymv.h"
19
#include "vp9/common/vp9_findnearmv.h"
20
#include "vp9/common/vp9_tile_common.h"
21
#include "vp9/encoder/vp9_mcomp.h"
22
23
#include "vp9/common/vp9_systemdependent.h"
#include "vp9/common/vp9_pragmas.h"
24
#include "vpx/vpx_encoder.h"
John Koleszar's avatar
John Koleszar committed
25
#include "vpx_mem/vpx_mem.h"
26
27
#include "vp9/encoder/vp9_bitstream.h"
#include "vp9/encoder/vp9_segmentation.h"
28

29
30
31
32
33
34
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_pred_common.h"
#include "vp9/common/vp9_entropy.h"
#include "vp9/encoder/vp9_encodemv.h"
#include "vp9/common/vp9_entropymv.h"
#include "vp9/common/vp9_mvref_common.h"
35
#include "vp9/common/vp9_treecoder.h"
Paul Wilkins's avatar
Paul Wilkins committed
36

John Koleszar's avatar
John Koleszar committed
37
38
39
40
41
#if defined(SECTIONBITS_OUTPUT)
unsigned __int64 Sectionbits[500];
#endif

#ifdef ENTROPY_STATS
42
43
44
int intra_mode_stats[VP9_KF_BINTRAMODES]
                    [VP9_KF_BINTRAMODES]
                    [VP9_KF_BINTRAMODES];
45
46
47
vp9_coeff_stats tree_update_hist_4x4[BLOCK_TYPES];
vp9_coeff_stats tree_update_hist_8x8[BLOCK_TYPES];
vp9_coeff_stats tree_update_hist_16x16[BLOCK_TYPES];
48
vp9_coeff_stats tree_update_hist_32x32[BLOCK_TYPES];
49

John Koleszar's avatar
John Koleszar committed
50
51
52
extern unsigned int active_section;
#endif

53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
#if CONFIG_CODE_NONZEROCOUNT
#ifdef NZC_STATS
unsigned int nzc_stats_4x4[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                          [NZC4X4_TOKENS];
unsigned int nzc_stats_8x8[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                          [NZC8X8_TOKENS];
unsigned int nzc_stats_16x16[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                          [NZC16X16_TOKENS];
unsigned int nzc_stats_32x32[MAX_NZC_CONTEXTS][REF_TYPES][BLOCK_TYPES]
                          [NZC32X32_TOKENS];
unsigned int nzc_pcat_stats[MAX_NZC_CONTEXTS][NZC_TOKENS_EXTRA]
                          [NZC_BITS_EXTRA][2];
void init_nzcstats();
void update_nzcstats(VP9_COMMON *const cm);
void print_nzcstats();
#endif
#endif

John Koleszar's avatar
John Koleszar committed
71
72
73
74
#ifdef MODE_STATS
int count_mb_seg[4] = { 0, 0, 0, 0 };
#endif

75
76
#define vp9_cost_upd  ((int)(vp9_cost_one(upd) - vp9_cost_zero(upd)) >> 8)
#define vp9_cost_upd256  ((int)(vp9_cost_one(upd) - vp9_cost_zero(upd)))
77
78
79
80

#define SEARCH_NEWP
static int update_bits[255];

John Koleszar's avatar
John Koleszar committed
81
82
83
static void compute_update_table() {
  int i;
  for (i = 0; i < 255; i++)
84
    update_bits[i] = vp9_count_term_subexp(i, SUBEXP_PARAM, 255);
85
86
}

John Koleszar's avatar
John Koleszar committed
87
88
89
90
91
static int split_index(int i, int n, int modulus) {
  int max1 = (n - 1 - modulus / 2) / modulus + 1;
  if (i % modulus == modulus / 2) i = i / modulus;
  else i = max1 + i - (i + modulus - modulus / 2) / modulus;
  return i;
92
93
}

John Koleszar's avatar
John Koleszar committed
94
95
96
97
98
static int remap_prob(int v, int m) {
  const int n = 256;
  const int modulus = MODULUS_PARAM;
  int i;
  if ((m << 1) <= n)
99
    i = vp9_recenter_nonneg(v, m) - 1;
John Koleszar's avatar
John Koleszar committed
100
  else
101
    i = vp9_recenter_nonneg(n - 1 - v, n - 1 - m) - 1;
John Koleszar's avatar
John Koleszar committed
102
103
104

  i = split_index(i, n - 1, modulus);
  return i;
105
}
106

107
108
static void write_prob_diff_update(vp9_writer *const bc,
                                   vp9_prob newp, vp9_prob oldp) {
John Koleszar's avatar
John Koleszar committed
109
  int delp = remap_prob(newp, oldp);
110
  vp9_encode_term_subexp(bc, delp, SUBEXP_PARAM, 255);
111
112
}

113
static int prob_diff_update_cost(vp9_prob newp, vp9_prob oldp) {
John Koleszar's avatar
John Koleszar committed
114
115
  int delp = remap_prob(newp, oldp);
  return update_bits[delp] * 256;
116
}
117

John Koleszar's avatar
John Koleszar committed
118
static void update_mode(
119
  vp9_writer *const bc,
John Koleszar's avatar
John Koleszar committed
120
  int n,
121
  const struct vp9_token tok[/* n */],
122
123
124
  vp9_tree tree,
  vp9_prob Pnew               [/* n-1 */],
  vp9_prob Pcur               [/* n-1 */],
John Koleszar's avatar
John Koleszar committed
125
126
127
128
129
130
  unsigned int bct            [/* n-1 */] [2],
  const unsigned int num_events[/* n */]
) {
  unsigned int new_b = 0, old_b = 0;
  int i = 0;

131
132
  vp9_tree_probs_from_distribution(tree, Pnew, bct, num_events, 0);
  n--;
John Koleszar's avatar
John Koleszar committed
133
134

  do {
135
136
    new_b += cost_branch(bct[i], Pnew[i]);
    old_b += cost_branch(bct[i], Pcur[i]);
John Koleszar's avatar
John Koleszar committed
137
138
139
  } while (++i < n);

  if (new_b + (n << 8) < old_b) {
John Koleszar's avatar
John Koleszar committed
140
141
    int i = 0;

142
    vp9_write_bit(bc, 1);
John Koleszar's avatar
John Koleszar committed
143

John Koleszar's avatar
John Koleszar committed
144
    do {
145
      const vp9_prob p = Pnew[i];
John Koleszar's avatar
John Koleszar committed
146

147
      vp9_write_literal(bc, Pcur[i] = p ? p : 1, 8);
John Koleszar's avatar
John Koleszar committed
148
149
    } while (++i < n);
  } else
150
    vp9_write_bit(bc, 0);
John Koleszar's avatar
John Koleszar committed
151
152
}

153
static void update_mbintra_mode_probs(VP9_COMP* const cpi,
154
                                      vp9_writer* const bc) {
155
  VP9_COMMON *const cm = &cpi->common;
John Koleszar's avatar
John Koleszar committed
156

John Koleszar's avatar
John Koleszar committed
157
  {
158
159
    vp9_prob Pnew   [VP9_YMODES - 1];
    unsigned int bct [VP9_YMODES - 1] [2];
John Koleszar's avatar
John Koleszar committed
160

John Koleszar's avatar
John Koleszar committed
161
    update_mode(
162
      bc, VP9_YMODES, vp9_ymode_encodings, vp9_ymode_tree,
Paul Wilkins's avatar
Paul Wilkins committed
163
      Pnew, cm->fc.ymode_prob, bct, (unsigned int *)cpi->ymode_count
John Koleszar's avatar
John Koleszar committed
164
    );
165
166
167
    update_mode(bc, VP9_I32X32_MODES, vp9_sb_ymode_encodings,
                vp9_sb_ymode_tree, Pnew, cm->fc.sb_ymode_prob, bct,
                (unsigned int *)cpi->sb_ymode_count);
John Koleszar's avatar
John Koleszar committed
168
  }
John Koleszar's avatar
John Koleszar committed
169
170
}

171
172
void vp9_update_skip_probs(VP9_COMP *cpi) {
  VP9_COMMON *const pc = &cpi->common;
John Koleszar's avatar
John Koleszar committed
173
  int k;
Paul Wilkins's avatar
Paul Wilkins committed
174

John Koleszar's avatar
John Koleszar committed
175
  for (k = 0; k < MBSKIP_CONTEXTS; ++k) {
John Koleszar's avatar
John Koleszar committed
176
177
    pc->mbskip_pred_probs[k] = get_binary_prob(cpi->skip_false_count[k],
                                               cpi->skip_true_count[k]);
John Koleszar's avatar
John Koleszar committed
178
  }
Paul Wilkins's avatar
Paul Wilkins committed
179
180
}

181
static void update_switchable_interp_probs(VP9_COMP *cpi,
182
                                           vp9_writer* const bc) {
183
  VP9_COMMON *const pc = &cpi->common;
184
185
  unsigned int branch_ct[32][2];
  int i, j;
186
  for (j = 0; j <= VP9_SWITCHABLE_FILTERS; ++j) {
187
    vp9_tree_probs_from_distribution(
188
        vp9_switchable_interp_tree,
189
        pc->fc.switchable_interp_prob[j], branch_ct,
190
        cpi->switchable_interp_count[j], 0);
191
    for (i = 0; i < VP9_SWITCHABLE_FILTERS - 1; ++i) {
192
193
      if (pc->fc.switchable_interp_prob[j][i] < 1)
        pc->fc.switchable_interp_prob[j][i] = 1;
194
      vp9_write_literal(bc, pc->fc.switchable_interp_prob[j][i], 8);
195
196
197
198
    }
  }
}

199
// This function updates the reference frame prediction stats
200
201
static void update_refpred_stats(VP9_COMP *cpi) {
  VP9_COMMON *const cm = &cpi->common;
John Koleszar's avatar
John Koleszar committed
202
  int i;
203
  vp9_prob new_pred_probs[PREDICTION_PROBS];
John Koleszar's avatar
John Koleszar committed
204
205
206
  int old_cost, new_cost;

  // Set the prediction probability structures to defaults
207
  if (cm->frame_type != KEY_FRAME) {
John Koleszar's avatar
John Koleszar committed
208
209
    // From the prediction counts set the probabilities for each context
    for (i = 0; i < PREDICTION_PROBS; i++) {
John Koleszar's avatar
John Koleszar committed
210
211
      new_pred_probs[i] = get_binary_prob(cpi->ref_pred_count[i][0],
                                          cpi->ref_pred_count[i][1]);
John Koleszar's avatar
John Koleszar committed
212
213
214
215

      // Decide whether or not to update the reference frame probs.
      // Returned costs are in 1/256 bit units.
      old_cost =
216
217
        (cpi->ref_pred_count[i][0] * vp9_cost_zero(cm->ref_pred_probs[i])) +
        (cpi->ref_pred_count[i][1] * vp9_cost_one(cm->ref_pred_probs[i]));
John Koleszar's avatar
John Koleszar committed
218
219

      new_cost =
220
221
        (cpi->ref_pred_count[i][0] * vp9_cost_zero(new_pred_probs[i])) +
        (cpi->ref_pred_count[i][1] * vp9_cost_one(new_pred_probs[i]));
John Koleszar's avatar
John Koleszar committed
222
223
224
225
226
227
228

      // Cost saving must be >= 8 bits (2048 in these units)
      if ((old_cost - new_cost) >= 2048) {
        cpi->ref_pred_probs_update[i] = 1;
        cm->ref_pred_probs[i] = new_pred_probs[i];
      } else
        cpi->ref_pred_probs_update[i] = 0;
229
    }
John Koleszar's avatar
John Koleszar committed
230
  }
231
232
}

233
234
235
236
237
238
// This function is called to update the mode probability context used to encode
// inter modes. It assumes the branch counts table has already been populated
// prior to the actual packing of the bitstream (in rd stage or dummy pack)
//
// The branch counts table is re-populated during the actual pack stage and in
// the decoder to facilitate backwards update of the context.
239
240
static void update_inter_mode_probs(VP9_COMMON *cm,
                                    int mode_context[INTER_MODE_CONTEXTS][4]) {
241
  int i, j;
Jim Bankoski's avatar
Jim Bankoski committed
242
  unsigned int (*mv_ref_ct)[4][2];
243
244
245
246
247
248
249
250

  vpx_memcpy(mode_context, cm->fc.vp9_mode_contexts,
             sizeof(cm->fc.vp9_mode_contexts));

  mv_ref_ct = cm->fc.mv_ref_ct;

  for (i = 0; i < INTER_MODE_CONTEXTS; i++) {
    for (j = 0; j < 4; j++) {
251
      int new_prob, old_cost, new_cost;
252
253
254

      // Work out cost of coding branches with the old and optimal probability
      old_cost = cost_branch256(mv_ref_ct[i][j], mode_context[i][j]);
255
      new_prob = get_binary_prob(mv_ref_ct[i][j][0], mv_ref_ct[i][j][1]);
256
257
258
259
260
261
262
263
264
265
266
      new_cost = cost_branch256(mv_ref_ct[i][j], new_prob);

      // If cost saving is >= 14 bits then update the mode probability.
      // This is the approximate net cost of updating one probability given
      // that the no update case ismuch more common than the update case.
      if (new_cost <= (old_cost - (14 << 8))) {
        mode_context[i][j] = new_prob;
      }
    }
  }
}
267
268
269
270
271
272
273
274
275
276
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

#if CONFIG_NEW_MVREF
static void update_mv_ref_probs(VP9_COMP *cpi,
                                int mvref_probs[MAX_REF_FRAMES]
                                               [MAX_MV_REF_CANDIDATES-1]) {
  MACROBLOCKD *xd = &cpi->mb.e_mbd;
  int rf;     // Reference frame
  int ref_c;  // Motion reference candidate
  int node;   // Probability node index

  for (rf = 0; rf < MAX_REF_FRAMES; ++rf) {
    int count = 0;

    // Skip the dummy entry for intra ref frame.
    if (rf == INTRA_FRAME) {
      continue;
    }

    // Sum the counts for all candidates
    for (ref_c = 0; ref_c < MAX_MV_REF_CANDIDATES; ++ref_c) {
      count += cpi->mb_mv_ref_count[rf][ref_c];
    }

    // Calculate the tree node probabilities
    for (node = 0; node < MAX_MV_REF_CANDIDATES-1; ++node) {
      int new_prob, old_cost, new_cost;
      unsigned int branch_cnts[2];

      // How many hits on each branch at this node
      branch_cnts[0] = cpi->mb_mv_ref_count[rf][node];
      branch_cnts[1] = count - cpi->mb_mv_ref_count[rf][node];

      // Work out cost of coding branches with the old and optimal probability
      old_cost = cost_branch256(branch_cnts, xd->mb_mv_ref_probs[rf][node]);
      new_prob = get_prob(branch_cnts[0], count);
      new_cost = cost_branch256(branch_cnts, new_prob);

      // Take current 0 branch cases out of residual count
      count -= cpi->mb_mv_ref_count[rf][node];

      if ((new_cost + VP9_MV_REF_UPDATE_COST) <= old_cost) {
        mvref_probs[rf][node] = new_prob;
      } else {
        mvref_probs[rf][node] = xd->mb_mv_ref_probs[rf][node];
      }
    }
  }
}
#endif

317
318
static void write_ymode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_ymode_tree, p, vp9_ymode_encodings + m);
John Koleszar's avatar
John Koleszar committed
319
320
}

321
322
static void kfwrite_ymode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_kf_ymode_tree, p, vp9_kf_ymode_encodings + m);
John Koleszar's avatar
John Koleszar committed
323
324
}

325
326
327
328
static void write_sb_ymode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_sb_ymode_tree, p, vp9_sb_ymode_encodings + m);
}

329
330
static void sb_kfwrite_ymode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_uv_mode_tree, p, vp9_sb_kf_ymode_encodings + m);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
331
332
}

333
334
static void write_i8x8_mode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_i8x8_mode_tree, p, vp9_i8x8_mode_encodings + m);
Yaowu Xu's avatar
Yaowu Xu committed
335
}
Yaowu Xu's avatar
Yaowu Xu committed
336

337
338
static void write_uv_mode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_uv_mode_tree, p, vp9_uv_mode_encodings + m);
John Koleszar's avatar
John Koleszar committed
339
340
341
}


342
static void write_bmode(vp9_writer *bc, int m, const vp9_prob *p) {
343
344
345
346
#if CONFIG_NEWBINTRAMODES
  assert(m < B_CONTEXT_PRED - CONTEXT_PRED_REPLACEMENTS || m == B_CONTEXT_PRED);
  if (m == B_CONTEXT_PRED) m -= CONTEXT_PRED_REPLACEMENTS;
#endif
347
  write_token(bc, vp9_bmode_tree, p, vp9_bmode_encodings + m);
John Koleszar's avatar
John Koleszar committed
348
349
}

350
351
352
353
static void write_kf_bmode(vp9_writer *bc, int m, const vp9_prob *p) {
  write_token(bc, vp9_kf_bmode_tree, p, vp9_kf_bmode_encodings + m);
}

354
static void write_split(vp9_writer *bc, int x, const vp9_prob *p) {
355
356
  write_token(
    bc, vp9_mbsplit_tree, p, vp9_mbsplit_encodings + x);
John Koleszar's avatar
John Koleszar committed
357
358
}

359
static int prob_update_savings(const unsigned int *ct,
360
361
362
363
364
                               const vp9_prob oldp, const vp9_prob newp,
                               const vp9_prob upd) {
  const int old_b = cost_branch256(ct, oldp);
  const int new_b = cost_branch256(ct, newp);
  const int update_b = 2048 + vp9_cost_upd256;
John Koleszar's avatar
John Koleszar committed
365
  return (old_b - new_b - update_b);
366
367
}

368
static int prob_diff_update_savings(const unsigned int *ct,
369
370
371
372
                                    const vp9_prob oldp, const vp9_prob newp,
                                    const vp9_prob upd) {
  const int old_b = cost_branch256(ct, oldp);
  const int new_b = cost_branch256(ct, newp);
John Koleszar's avatar
John Koleszar committed
373
  const int update_b = (newp == oldp ? 0 :
374
                        prob_diff_update_cost(newp, oldp) + vp9_cost_upd256);
John Koleszar's avatar
John Koleszar committed
375
  return (old_b - new_b - update_b);
376
377
378
}

static int prob_diff_update_savings_search(const unsigned int *ct,
379
380
381
                                           const vp9_prob oldp, vp9_prob *bestp,
                                           const vp9_prob upd) {
  const int old_b = cost_branch256(ct, oldp);
John Koleszar's avatar
John Koleszar committed
382
  int new_b, update_b, savings, bestsavings, step;
383
  vp9_prob newp, bestnewp;
John Koleszar's avatar
John Koleszar committed
384
385
386
387
388
389

  bestsavings = 0;
  bestnewp = oldp;

  step = (*bestp > oldp ? -1 : 1);
  for (newp = *bestp; newp != oldp; newp += step) {
390
391
    new_b = cost_branch256(ct, newp);
    update_b = prob_diff_update_cost(newp, oldp) + vp9_cost_upd256;
John Koleszar's avatar
John Koleszar committed
392
393
394
395
    savings = old_b - new_b - update_b;
    if (savings > bestsavings) {
      bestsavings = savings;
      bestnewp = newp;
396
    }
John Koleszar's avatar
John Koleszar committed
397
398
399
  }
  *bestp = bestnewp;
  return bestsavings;
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
#if CONFIG_MODELCOEFPROB && MODEL_BASED_UPDATE
static int prob_diff_update_savings_search_model(const unsigned int *ct,
                                                 const vp9_prob *oldp,
                                                 vp9_prob *bestp,
                                                 const vp9_prob upd,
                                                 int b, int r) {
  int i, old_b, new_b, update_b, savings, bestsavings, step;
  int newp;
  vp9_prob bestnewp, newplist[ENTROPY_NODES];
  for (i = UNCONSTRAINED_NODES - 1, old_b = 0; i < ENTROPY_NODES; ++i)
    old_b += cost_branch256(ct + 2 * i, oldp[i]);

  bestsavings = 0;
  bestnewp = oldp[UNCONSTRAINED_NODES - 1];

  step = (*bestp > oldp[UNCONSTRAINED_NODES - 1] ? -1 : 1);
  newp = *bestp;
  // newp = *bestp - step * (abs(*bestp - oldp[UNCONSTRAINED_NODES - 1]) >> 1);
  for (; newp != oldp[UNCONSTRAINED_NODES - 1]; newp += step) {
    if (newp < 1 || newp > 255) continue;
    newplist[UNCONSTRAINED_NODES - 1] = newp;
    vp9_get_model_distribution(newp, newplist, b, r);
    for (i = UNCONSTRAINED_NODES - 1, new_b = 0; i < ENTROPY_NODES; ++i)
      new_b += cost_branch256(ct + 2 * i, newplist[i]);
    update_b = prob_diff_update_cost(newp, oldp[UNCONSTRAINED_NODES - 1]) +
        vp9_cost_upd256;
    savings = old_b - new_b - update_b;
    if (savings > bestsavings) {
      bestsavings = savings;
      bestnewp = newp;
    }
  }
  *bestp = bestnewp;
  return bestsavings;
}
#endif

439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
static void vp9_cond_prob_update(vp9_writer *bc, vp9_prob *oldp, vp9_prob upd,
                                 unsigned int *ct) {
  vp9_prob newp;
  int savings;
  newp = get_binary_prob(ct[0], ct[1]);
  savings = prob_update_savings(ct, *oldp, newp, upd);
  if (savings > 0) {
    vp9_write(bc, 1, upd);
    vp9_write_literal(bc, newp, 8);
    *oldp = newp;
  } else {
    vp9_write(bc, 0, upd);
  }
}

454
static void pack_mb_tokens(vp9_writer* const bc,
455
456
457
                           TOKENEXTRA **tp,
                           const TOKENEXTRA *const stop) {
  TOKENEXTRA *p = *tp;
John Koleszar's avatar
John Koleszar committed
458

John Koleszar's avatar
John Koleszar committed
459
460
  while (p < stop) {
    const int t = p->Token;
461
    const struct vp9_token *const a = vp9_coef_encodings + t;
462
    const vp9_extra_bit_struct *const b = vp9_extra_bits + t;
John Koleszar's avatar
John Koleszar committed
463
464
465
    int i = 0;
    const unsigned char *pp = p->context_tree;
    int v = a->value;
466
    int n = a->len;
John Koleszar's avatar
John Koleszar committed
467

468
469
470
471
472
473
    if (t == EOSB_TOKEN)
    {
      ++p;
      break;
    }

John Koleszar's avatar
John Koleszar committed
474
475
476
477
478
    /* skip one or two nodes */
    if (p->skip_eob_node) {
      n -= p->skip_eob_node;
      i = 2 * p->skip_eob_node;
    }
John Koleszar's avatar
John Koleszar committed
479

John Koleszar's avatar
John Koleszar committed
480
481
    do {
      const int bb = (v >> --n) & 1;
482
      vp9_write(bc, bb, pp[i >> 1]);
483
      i = vp9_coef_tree[i + bb];
John Koleszar's avatar
John Koleszar committed
484
    } while (n);
John Koleszar's avatar
John Koleszar committed
485
486


John Koleszar's avatar
John Koleszar committed
487
488
    if (b->base_val) {
      const int e = p->Extra, L = b->Len;
John Koleszar's avatar
John Koleszar committed
489

John Koleszar's avatar
John Koleszar committed
490
491
492
493
494
      if (L) {
        const unsigned char *pp = b->prob;
        int v = e >> 1;
        int n = L;              /* number of bits in v, assumed nonzero */
        int i = 0;
John Koleszar's avatar
John Koleszar committed
495

John Koleszar's avatar
John Koleszar committed
496
497
        do {
          const int bb = (v >> --n) & 1;
498
          vp9_write(bc, bb, pp[i >> 1]);
John Koleszar's avatar
John Koleszar committed
499
500
501
          i = b->tree[i + bb];
        } while (n);
      }
John Koleszar's avatar
John Koleszar committed
502

503
      vp9_write_bit(bc, e & 1);
John Koleszar's avatar
John Koleszar committed
504
    }
John Koleszar's avatar
John Koleszar committed
505
506
507
    ++p;
  }

508
  *tp = p;
John Koleszar's avatar
John Koleszar committed
509
510
}

John Koleszar's avatar
John Koleszar committed
511
512
static void write_partition_size(unsigned char *cx_data, int size) {
  signed char csize;
John Koleszar's avatar
John Koleszar committed
513

John Koleszar's avatar
John Koleszar committed
514
515
516
517
518
519
  csize = size & 0xff;
  *cx_data = csize;
  csize = (size >> 8) & 0xff;
  *(cx_data + 1) = csize;
  csize = (size >> 16) & 0xff;
  *(cx_data + 2) = csize;
John Koleszar's avatar
John Koleszar committed
520
521
522
523
524

}

static void write_mv_ref
(
525
  vp9_writer *bc, MB_PREDICTION_MODE m, const vp9_prob *p
John Koleszar's avatar
John Koleszar committed
526
) {
527
#if CONFIG_DEBUG
John Koleszar's avatar
John Koleszar committed
528
  assert(NEARESTMV <= m  &&  m <= SPLITMV);
529
#endif
530
531
  write_token(bc, vp9_mv_ref_tree, p,
              vp9_mv_ref_encoding_array - NEARESTMV + m);
John Koleszar's avatar
John Koleszar committed
532
533
}

534
535
static void write_sb_mv_ref(vp9_writer *bc, MB_PREDICTION_MODE m,
                            const vp9_prob *p) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
536
537
538
#if CONFIG_DEBUG
  assert(NEARESTMV <= m  &&  m < SPLITMV);
#endif
539
540
  write_token(bc, vp9_sb_mv_ref_tree, p,
              vp9_sb_mv_ref_encoding_array - NEARESTMV + m);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
541
542
}

John Koleszar's avatar
John Koleszar committed
543
544
static void write_sub_mv_ref
(
545
  vp9_writer *bc, B_PREDICTION_MODE m, const vp9_prob *p
John Koleszar's avatar
John Koleszar committed
546
) {
547
#if CONFIG_DEBUG
John Koleszar's avatar
John Koleszar committed
548
  assert(LEFT4X4 <= m  &&  m <= NEW4X4);
549
#endif
550
551
  write_token(bc, vp9_sub_mv_ref_tree, p,
              vp9_sub_mv_ref_encoding_array - LEFT4X4 + m);
John Koleszar's avatar
John Koleszar committed
552
553
}

554
555
static void write_nmv(VP9_COMP *cpi, vp9_writer *bc,
                      const MV *mv, const int_mv *ref,
John Koleszar's avatar
John Koleszar committed
556
                      const nmv_context *nmvc, int usehp) {
557
558
559
560
  MV e;
  e.row = mv->row - ref->as_mv.row;
  e.col = mv->col - ref->as_mv.col;

561
562
  vp9_encode_nmv(bc, &e, &ref->as_mv, nmvc);
  vp9_encode_nmv_fp(bc, &e, &ref->as_mv, nmvc, usehp);
563
564
}

565
#if CONFIG_NEW_MVREF
566
567
static void vp9_write_mv_ref_id(vp9_writer *w,
                                vp9_prob * ref_id_probs,
568
569
570
571
                                int mv_ref_id) {
  // Encode the index for the MV reference.
  switch (mv_ref_id) {
    case 0:
572
      vp9_write(w, 0, ref_id_probs[0]);
573
574
      break;
    case 1:
575
576
      vp9_write(w, 1, ref_id_probs[0]);
      vp9_write(w, 0, ref_id_probs[1]);
577
578
      break;
    case 2:
579
580
581
      vp9_write(w, 1, ref_id_probs[0]);
      vp9_write(w, 1, ref_id_probs[1]);
      vp9_write(w, 0, ref_id_probs[2]);
582
583
      break;
    case 3:
584
585
586
      vp9_write(w, 1, ref_id_probs[0]);
      vp9_write(w, 1, ref_id_probs[1]);
      vp9_write(w, 1, ref_id_probs[2]);
587
588
589
590
591
592
593
594
595
596
      break;

      // TRAP.. This should not happen
    default:
      assert(0);
      break;
  }
}
#endif

Paul Wilkins's avatar
Paul Wilkins committed
597
598
// This function writes the current macro block's segnment id to the bitstream
// It should only be called if a segment map update is indicated.
599
static void write_mb_segid(vp9_writer *bc,
Paul Wilkins's avatar
Paul Wilkins committed
600
                           const MB_MODE_INFO *mi, const MACROBLOCKD *xd) {
John Koleszar's avatar
John Koleszar committed
601
  // Encode the MB segment id.
Ronald S. Bultje's avatar
Ronald S. Bultje committed
602
  int seg_id = mi->segment_id;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
603

Paul Wilkins's avatar
Paul Wilkins committed
604
  if (xd->segmentation_enabled && xd->update_mb_segmentation_map) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
605
    switch (seg_id) {
John Koleszar's avatar
John Koleszar committed
606
      case 0:
607
608
        vp9_write(bc, 0, xd->mb_segment_tree_probs[0]);
        vp9_write(bc, 0, xd->mb_segment_tree_probs[1]);
John Koleszar's avatar
John Koleszar committed
609
610
        break;
      case 1:
611
612
        vp9_write(bc, 0, xd->mb_segment_tree_probs[0]);
        vp9_write(bc, 1, xd->mb_segment_tree_probs[1]);
John Koleszar's avatar
John Koleszar committed
613
614
        break;
      case 2:
615
616
        vp9_write(bc, 1, xd->mb_segment_tree_probs[0]);
        vp9_write(bc, 0, xd->mb_segment_tree_probs[2]);
John Koleszar's avatar
John Koleszar committed
617
618
        break;
      case 3:
619
620
        vp9_write(bc, 1, xd->mb_segment_tree_probs[0]);
        vp9_write(bc, 1, xd->mb_segment_tree_probs[2]);
John Koleszar's avatar
John Koleszar committed
621
622
623
624
        break;

        // TRAP.. This should not happen
      default:
625
626
        vp9_write(bc, 0, xd->mb_segment_tree_probs[0]);
        vp9_write(bc, 0, xd->mb_segment_tree_probs[1]);
John Koleszar's avatar
John Koleszar committed
627
        break;
John Koleszar's avatar
John Koleszar committed
628
    }
John Koleszar's avatar
John Koleszar committed
629
  }
John Koleszar's avatar
John Koleszar committed
630
631
}

632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
static void write_mb_segid_except(VP9_COMMON *cm,
                                  vp9_writer *bc,
                                  const MB_MODE_INFO *mi,
                                  const MACROBLOCKD *xd,
                                  int mb_row, int mb_col) {
  // Encode the MB segment id.
  int seg_id = mi->segment_id;
  int pred_seg_id = vp9_get_pred_mb_segid(cm, xd,
                                          mb_row * cm->mb_cols + mb_col);
  const vp9_prob *p = xd->mb_segment_tree_probs;
  const vp9_prob p1 = xd->mb_segment_mispred_tree_probs[pred_seg_id];

  if (xd->segmentation_enabled && xd->update_mb_segmentation_map) {
    vp9_write(bc, seg_id >= 2, p1);
    if (pred_seg_id >= 2 && seg_id < 2) {
      vp9_write(bc, seg_id == 1, p[1]);
    } else if (pred_seg_id < 2 && seg_id >= 2) {
      vp9_write(bc, seg_id == 3, p[2]);
    }
  }
}

Paul Wilkins's avatar
Paul Wilkins committed
654
// This function encodes the reference frame
655
static void encode_ref_frame(vp9_writer *const bc,
656
                             VP9_COMMON *const cm,
John Koleszar's avatar
John Koleszar committed
657
658
659
660
661
                             MACROBLOCKD *xd,
                             int segment_id,
                             MV_REFERENCE_FRAME rf) {
  int seg_ref_active;
  int seg_ref_count = 0;
662
663
664
  seg_ref_active = vp9_segfeature_active(xd,
                                         segment_id,
                                         SEG_LVL_REF_FRAME);
John Koleszar's avatar
John Koleszar committed
665
666

  if (seg_ref_active) {
667
668
669
670
    seg_ref_count = vp9_check_segref(xd, segment_id, INTRA_FRAME) +
                    vp9_check_segref(xd, segment_id, LAST_FRAME) +
                    vp9_check_segref(xd, segment_id, GOLDEN_FRAME) +
                    vp9_check_segref(xd, segment_id, ALTREF_FRAME);
John Koleszar's avatar
John Koleszar committed
671
672
673
674
675
676
677
  }

  // If segment level coding of this signal is disabled...
  // or the segment allows multiple reference frame options
  if (!seg_ref_active || (seg_ref_count > 1)) {
    // Values used in prediction model coding
    unsigned char prediction_flag;
678
    vp9_prob pred_prob;
John Koleszar's avatar
John Koleszar committed
679
680
681
    MV_REFERENCE_FRAME pred_rf;

    // Get the context probability the prediction flag
Paul Wilkins's avatar
Paul Wilkins committed
682
    pred_prob = vp9_get_pred_prob(cm, xd, PRED_REF);
John Koleszar's avatar
John Koleszar committed
683
684

    // Get the predicted value.
Paul Wilkins's avatar
Paul Wilkins committed
685
    pred_rf = vp9_get_pred_ref(cm, xd);
John Koleszar's avatar
John Koleszar committed
686
687
688
689
690

    // Did the chosen reference frame match its predicted value.
    prediction_flag =
      (xd->mode_info_context->mbmi.ref_frame == pred_rf);

Paul Wilkins's avatar
Paul Wilkins committed
691
    vp9_set_pred_flag(xd, PRED_REF, prediction_flag);
692
    vp9_write(bc, prediction_flag, pred_prob);
John Koleszar's avatar
John Koleszar committed
693
694
695

    // If not predicted correctly then code value explicitly
    if (!prediction_flag) {
696
      vp9_prob mod_refprobs[PREDICTION_PROBS];
John Koleszar's avatar
John Koleszar committed
697
698
699
700
701
702
703
704

      vpx_memcpy(mod_refprobs,
                 cm->mod_refprobs[pred_rf], sizeof(mod_refprobs));

      // If segment coding enabled blank out options that cant occur by
      // setting the branch probability to 0.
      if (seg_ref_active) {
        mod_refprobs[INTRA_FRAME] *=
705
          vp9_check_segref(xd, segment_id, INTRA_FRAME);
John Koleszar's avatar
John Koleszar committed
706
        mod_refprobs[LAST_FRAME] *=
707
          vp9_check_segref(xd, segment_id, LAST_FRAME);
John Koleszar's avatar
John Koleszar committed
708
        mod_refprobs[GOLDEN_FRAME] *=
709
710
          (vp9_check_segref(xd, segment_id, GOLDEN_FRAME) *
           vp9_check_segref(xd, segment_id, ALTREF_FRAME));
John Koleszar's avatar
John Koleszar committed
711
712
713
      }

      if (mod_refprobs[0]) {
714
        vp9_write(bc, (rf != INTRA_FRAME), mod_refprobs[0]);
John Koleszar's avatar
John Koleszar committed
715
716
717
718
719
      }

      // Inter coded
      if (rf != INTRA_FRAME) {
        if (mod_refprobs[1]) {
720
          vp9_write(bc, (rf != LAST_FRAME), mod_refprobs[1]);
John Koleszar's avatar
John Koleszar committed
721
        }
722

John Koleszar's avatar
John Koleszar committed
723
724
        if (rf != LAST_FRAME) {
          if (mod_refprobs[2]) {
725
            vp9_write(bc, (rf != GOLDEN_FRAME), mod_refprobs[2]);
John Koleszar's avatar
John Koleszar committed
726
          }
727
        }
John Koleszar's avatar
John Koleszar committed
728
      }
Paul Wilkins's avatar
Paul Wilkins committed
729
    }
John Koleszar's avatar
John Koleszar committed
730
  }
Paul Wilkins's avatar
Paul Wilkins committed
731

John Koleszar's avatar
John Koleszar committed
732
733
  // if using the prediction mdoel we have nothing further to do because
  // the reference frame is fully coded by the segment
Paul Wilkins's avatar
Paul Wilkins committed
734
}
John Koleszar's avatar
John Koleszar committed
735

736
// Update the probabilities used to encode reference frame data
737
738
static void update_ref_probs(VP9_COMP *const cpi) {
  VP9_COMMON *const cm = &cpi->common;
739

John Koleszar's avatar
John Koleszar committed
740
741
742
743
  const int *const rfct = cpi->count_mb_ref_frame_usage;
  const int rf_intra = rfct[INTRA_FRAME];
  const int rf_inter = rfct[LAST_FRAME] +
                       rfct[GOLDEN_FRAME] + rfct[ALTREF_FRAME];
744

John Koleszar's avatar
John Koleszar committed
745
746
747
  cm->prob_intra_coded = get_binary_prob(rf_intra, rf_inter);
  cm->prob_last_coded = get_prob(rfct[LAST_FRAME], rf_inter);
  cm->prob_gf_coded = get_binary_prob(rfct[GOLDEN_FRAME], rfct[ALTREF_FRAME]);
748

John Koleszar's avatar
John Koleszar committed
749
750
  // Compute a modified set of probabilities to use when prediction of the
  // reference frame fails
Paul Wilkins's avatar
Paul Wilkins committed
751
  vp9_compute_mod_refprobs(cm);
752
753
}

Ronald S. Bultje's avatar
Ronald S. Bultje committed
754
755
756
static void pack_inter_mode_mvs(VP9_COMP *cpi, MODE_INFO *m,
                                vp9_writer *bc,
                                int mb_rows_left, int mb_cols_left) {
757
  VP9_COMMON *const pc = &cpi->common;
758
  const nmv_context *nmvc = &pc->fc.nmvc;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
759
760
  MACROBLOCK *const x = &cpi->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
John Koleszar's avatar
John Koleszar committed
761
  const int mis = pc->mode_info_stride;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
762
763
764
765
  MB_MODE_INFO *const mi = &m->mbmi;
  const MV_REFERENCE_FRAME rf = mi->ref_frame;
  const MB_PREDICTION_MODE mode = mi->mode;
  const int segment_id = mi->segment_id;
766
767
  const int bw = 1 << mb_width_log2(mi->sb_type);
  const int bh = 1 << mb_height_log2(mi->sb_type);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
768
  int skip_coeff;
Adrian Grange's avatar
Adrian Grange committed
769

Ronald S. Bultje's avatar
Ronald S. Bultje committed
770
771
772
773
  int mb_row = pc->mb_rows - mb_rows_left;
  int mb_col = pc->mb_cols - mb_cols_left;
  xd->prev_mode_info_context = pc->prev_mi + (m - pc->mi);
  x->partition_info = x->pi + (m - pc->mi);
774

Ronald S. Bultje's avatar
Ronald S. Bultje committed
775
776
777
  // Distance of Mb to the various image edges.
  // These specified to 8th pel as they are always compared to MV
  // values that are in 1/8th pel units
778

779
780
  set_mb_row(pc, xd, mb_row, bh);
  set_mb_col(pc, xd, mb_col, bw);
781

Ronald S. Bultje's avatar
Ronald S. Bultje committed
782
783
#ifdef ENTROPY_STATS
  active_section = 9;
784
#endif
785

Ronald S. Bultje's avatar
Ronald S. Bultje committed
786
787
788
789
790
  if (cpi->mb.e_mbd.update_mb_segmentation_map) {
    // Is temporal coding of the segment map enabled
    if (pc->temporal_update) {
      unsigned char prediction_flag = vp9_get_pred_flag(xd, PRED_SEG_ID);
      vp9_prob pred_prob = vp9_get_pred_prob(pc, xd, PRED_SEG_ID);
Paul Wilkins's avatar
Paul Wilkins committed
791

Ronald S. Bultje's avatar
Ronald S. Bultje committed
792
793
      // Code the segment id prediction flag for this mb
      vp9_write(bc, prediction_flag, pred_prob);
794

Ronald S. Bultje's avatar
Ronald S. Bultje committed
795
796
      // If the mb segment id wasn't predicted code explicitly
      if (!prediction_flag)
797
        write_mb_segid_except(pc, bc, mi, &cpi->mb.e_mbd, mb_row, mb_col);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
798
799
800
801
802
    } else {
      // Normal unpredicted coding
      write_mb_segid(bc, mi, &cpi->mb.e_mbd);
    }
  }
803

Ronald S. Bultje's avatar
Ronald S. Bultje committed
804
805
  if (!pc->mb_no_coeff_skip) {
    skip_coeff = 0;
Paul Wilkins's avatar
Paul Wilkins committed
806
  } else if (vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
807
808
    skip_coeff = 1;
  } else {
809
    skip_coeff = m->mbmi.mb_skip_coeff;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
810
811
812
    vp9_write(bc, skip_coeff,
              vp9_get_pred_prob(pc, xd, PRED_MBSKIP));
  }
John Koleszar's avatar
John Koleszar committed
813

Ronald S. Bultje's avatar
Ronald S. Bultje committed
814
  // Encode the reference frame.
Paul Wilkins's avatar
Paul Wilkins committed
815
  encode_ref_frame(bc, pc, xd, segment_id, rf);
Paul Wilkins's avatar
Paul Wilkins committed
816

Ronald S. Bultje's avatar
Ronald S. Bultje committed
817
  if (rf == INTRA_FRAME) {
818
#ifdef ENTROPY_STATS
Ronald S. Bultje's avatar
Ronald S. Bultje committed
819
    active_section = 6;
820
#endif
Paul Wilkins's avatar
Paul Wilkins committed
821

Paul Wilkins's avatar
Paul Wilkins committed
822
823
824
825
826
    if (m->mbmi.sb_type)
      write_sb_ymode(bc, mode, pc->fc.sb_ymode_prob);
    else
      write_ymode(bc, mode, pc->fc.ymode_prob);

Ronald S. Bultje's avatar
Ronald S. Bultje committed
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
    if (mode == B_PRED) {
      int j = 0;
      do {
        write_bmode(bc, m->bmi[j].as_mode.first,
                    pc->fc.bmode_prob);
      } while (++j < 16);
    }
    if (mode == I8X8_PRED) {
      write_i8x8_mode(bc, m->bmi[0].as_mode.first,
                      pc->fc.i8x8_mode_prob);
      write_i8x8_mode(bc, m->bmi[2].as_mode.first,
                      pc->fc.i8x8_mode_prob);
      write_i8x8_mode(bc, m->bmi[8].as_mode.first,
                      pc->fc.i8x8_mode_prob);
      write_i8x8_mode(bc, m->bmi[10].as_mode.first,
                      pc->fc.i8x8_mode_prob);
    } else {
      write_uv_mode(bc, mi->uv_mode,
                    pc->fc.uv_mode_prob[mode]);
    }
  } else {
    vp9_prob mv_ref_p[VP9_MVREFS - 1];
849

Ronald S. Bultje's avatar
Ronald S. Bultje committed
850
    vp9_mv_ref_probs(&cpi->common, mv_ref_p, mi->mb_mode_context[rf]);
Yaowu Xu's avatar
Yaowu Xu committed
851

John Koleszar's avatar
John Koleszar committed
852
#ifdef ENTROPY_STATS
Ronald S. Bultje's avatar
Ronald S. Bultje committed
853
    active_section = 3;
John Koleszar's avatar
John Koleszar committed
854
855
#endif

856
    // If segment skip is not enabled code the mode.
Paul Wilkins's avatar
Paul Wilkins committed
857
    if (!vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
858
859
      if (mi->sb_type) {
        write_sb_mv_ref(bc, mode, mv_ref_p);
860
      } else {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
861
862
863
864
        write_mv_ref(bc, mode, mv_ref_p);
      }
      vp9_accum_mv_refs(&cpi->common, mode, mi->mb_mode_context[rf]);
    }
865

Ronald S. Bultje's avatar
Ronald S. Bultje committed
866
867
868
869
870
871
872
873
874
875
876
    if (mode >= NEARESTMV && mode <= SPLITMV) {
      if (cpi->common.mcomp_filter_type == SWITCHABLE) {
        write_token(bc, vp9_switchable_interp_tree,
                    vp9_get_pred_probs(&cpi->common, xd,
                                       PRED_SWITCHABLE_INTERP),
                    vp9_switchable_interp_encodings +
                    vp9_switchable_interp_map[mi->interp_filter]);
      } else {
        assert(mi->interp_filter == cpi->common.mcomp_filter_type);
      }
    }
877

Ronald S. Bultje's avatar
Ronald S. Bultje committed
878
879
880
881
882
883
    // does the feature use compound prediction or not
    // (if not specified at the frame/segment level)
    if (cpi->common.comp_pred_mode == HYBRID_PREDICTION) {
      vp9_write(bc, mi->second_ref_frame > INTRA_FRAME,
                vp9_get_pred_prob(pc, xd, PRED_COMP));
    }
884
#if CONFIG_COMP_INTERINTRA_PRED
Ronald S. Bultje's avatar
Ronald S. Bultje committed
885
886
887
888
889
890
891
892
893
894
895
896
897
    if (cpi->common.use_interintra &&
        mode >= NEARESTMV && mode < SPLITMV &&
        mi->second_ref_frame <= INTRA_FRAME) {
      vp9_write(bc, mi->second_ref_frame == INTRA_FRAME,
                pc->fc.interintra_prob);
      // if (!cpi->dummy_packing)
      //   printf("-- %d (%d)\n", mi->second_ref_frame == INTRA_FRAME,
      //          pc->fc.interintra_prob);
      if (mi->second_ref_frame == INTRA_FRAME) {
        // if (!cpi->dummy_packing)
        //   printf("** %d %d\n", mi->interintra_mode,
        // mi->interintra_uv_mode);
        write_ymode(bc, mi->interintra_mode, pc->fc.ymode_prob);
898
#if SEPARATE_INTERINTRA_UV
Ronald S. Bultje's avatar
Ronald S. Bultje committed
899
900
        write_uv_mode(bc, mi->interintra_uv_mode,
                      pc->fc.uv_mode_prob[mi->interintra_mode]);
901
#endif
Ronald S. Bultje's avatar
Ronald S. Bultje committed
902
903
      }
    }
904
#endif
John Koleszar's avatar
John Koleszar committed
905

906
#if CONFIG_NEW_MVREF
Ronald S. Bultje's avatar
Ronald S. Bultje committed
907
908
909
910
911
912
913
914
915
916
917
918
919
    // if ((mode == NEWMV) || (mode == SPLITMV)) {
    if (mode == NEWMV) {
      // Encode the index of the choice.
      vp9_write_mv_ref_id(bc,
                          xd->mb_mv_ref_probs[rf], mi->best_index);

      if (mi->second_ref_frame > 0) {
        // Encode the index of the choice.
        vp9_write_mv_ref_id(
                            bc, xd->mb_mv_ref_probs[mi->second_ref_frame],
                            mi->best_second_index);
      }
    }
920
#endif
Ronald S. Bultje's avatar
Ronald S. Bultje committed
921
922
923

    switch (mode) { /* new, split require MVs */
      case NEWMV:
924
#ifdef ENTROPY_STATS
Ronald S. Bultje's avatar
Ronald S. Bultje committed
925
        active_section = 5;
926
#endif
927
        write_nmv(cpi, bc, &mi->mv[0].as_mv, &mi->best_mv,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
928
929
                  (const nmv_context*) nmvc,
                  xd->allow_high_precision_mv);
John Koleszar's avatar
John Koleszar committed
930

Ronald S. Bultje's avatar
Ronald S. Bultje committed
931
        if (mi->second_ref_frame > 0) {
932
          write_nmv(cpi, bc, &mi->mv[1].as_mv, &mi->best_second_mv,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
933
934
935
936
937
938
                    (const nmv_context*) nmvc,
                    xd->allow_high_precision_mv);
        }
        break;
      case SPLITMV: {
        int j = 0;
John Koleszar's avatar
John Koleszar committed
939

940
#ifdef MODE_STATS
Ronald S. Bultje's avatar
Ronald S. Bultje committed
941
        ++count_mb_seg[mi->partitioning];
942
#endif
John Koleszar's avatar
John Koleszar committed
943

Ronald S. Bultje's avatar
Ronald S. Bultje committed
944
945
        write_split(bc, mi->partitioning, cpi->common.fc.mbsplit_prob);
        cpi->mbsplit_count[mi->partitioning]++;
Adrian Grange's avatar
Adrian Grange committed
946

Ronald S. Bultje's avatar
Ronald S. Bultje committed
947
948
949
950
951
952
953
954
955
956
        do {
          B_PREDICTION_MODE blockmode;
          int_mv blockmv;
          const int *const  L = vp9_mbsplits[mi->partitioning];
          int k = -1;  /* first block in subset j */
          int mv_contz;
          int_mv leftmv, abovemv;

          blockmode = cpi->mb.partition_info->bmi[j].mode;
          blockmv = cpi->mb.partition_info->bmi[j].mv;
957
#if CONFIG_DEBUG
Ronald S. Bultje's avatar
Ronald S. Bultje committed
958
959
960
          while (j != L[++k])
            if (k >= 16)
              assert(0);
961
#else
Ronald S. Bultje's avatar
Ronald S. Bultje committed
962
          while (j != L[++k]);
963
#endif
964
          leftmv.as_int = left_block_mv(xd, m, k);
Ronald S. Bultje's avatar
Ronald S. Bultje committed
965
966
          abovemv.as_int = above_block_mv(m, k, mis);
          mv_contz = vp9_mv_cont(&leftmv, &abovemv);
967

Ronald S. Bultje's avatar
Ronald S. Bultje committed
968
969
970
971
          write_sub_mv_ref(bc, blockmode,
                           cpi->common.fc.sub_mv_ref_prob[mv_contz]);
          cpi->sub_mv_ref_count[mv_contz][blockmode - LEFT4X4]++;
          if (blockmode == NEW4X4) {
972
#ifdef ENTROPY_STATS
Ronald S. Bultje's avatar
Ronald S. Bultje committed
973
974
            active_section = 11;
#endif
975
            write_nmv(cpi, bc, &blockmv.as_mv, &mi->best_mv,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
976
977
978
979
                      (const nmv_context*) nmvc,
                      xd->allow_high_precision_mv);

            if (mi->second_ref_frame > 0) {
980
              write_nmv(cpi, bc,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
981
982
983
984
                        &cpi->mb.partition_info->bmi[j].second_mv.as_mv,
                        &mi->best_second_mv,
                        (const nmv_context*) nmvc,
                        xd->allow_high_precision_mv);
Adrian Grange's avatar
Adrian Grange committed
985
            }
John Koleszar's avatar
John Koleszar committed
986
          }
Ronald S. Bultje's avatar
Ronald S. Bultje committed
987
988
989
990
991
992
993
        } while (++j < cpi->mb.partition_info->count);
        break;
      }
      default:
        break;
    }
  }
John Koleszar's avatar
John Koleszar committed
994

Ronald S. Bultje's avatar
Ronald S. Bultje committed
995
996
997
998
999
  if (((rf == INTRA_FRAME && mode <= I8X8_PRED) ||
       (rf != INTRA_FRAME && !(mode == SPLITMV &&
                               mi->partitioning == PARTITIONING_4X4))) &&
      pc->txfm_mode == TX_MODE_SELECT &&
      !((pc->mb_no_coeff_skip && skip_coeff) ||
Paul Wilkins's avatar
Paul Wilkins committed
1000
        (vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)))) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
1001
1002
1003
1004
1005
    TX_SIZE sz = mi->txfm_size;
    // FIXME(rbultje) code ternary symbol once all experiments are merged
    vp9_write(bc, sz != TX_4X4, pc->prob_tx[0]);
    if (sz != TX_4X4 && mode != I8X8_PRED && mode != SPLITMV) {
      vp9_write(bc, sz != TX_8X8, pc->prob_tx[1]);
1006
      if (mi->sb_type >= BLOCK_SIZE_SB32X32 && sz != TX_8X8)
Ronald S. Bultje's avatar
Ronald S. Bultje committed
1007
        vp9_write(bc, sz != TX_16X16, pc->prob_tx[2]);
John Koleszar's avatar
John Koleszar committed
1008
    }
John Koleszar's avatar
John Koleszar committed
1009
  }
John Koleszar's avatar
John Koleszar committed
1010
}
1011

Ronald S. Bultje's avatar
Ronald S. Bultje committed
1012
static void write_mb_modes_kf(const VP9_COMP *cpi,
1013
                              MODE_INFO *m,
Ronald S. Bultje's avatar
Ronald S. Bultje committed
1014
1015
1016
1017
1018
1019
1020
1021
                              vp9_writer *bc,
                              int mb_rows_left, int mb_cols_left) {
  const VP9_COMMON *const c = &cpi->common;
  const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
  const int mis = c->mode_info_stride;
  const int ym = m->mbmi.mode;
  const int segment_id = m->mbmi.segment_id;
  int skip_coeff;
1022
1023
1024
1025
1026

  if (xd->update_mb_segmentation_map) {
    write_mb_segid(bc, &m->mbmi, xd);
  }

Ronald S. Bultje's avatar
Ronald S. Bultje committed
1027
1028
  if (!c->mb_no_coeff_skip) {
    skip_coeff = 0;
Paul Wilkins's avatar
Paul Wilkins committed
1029
  } else if (vp9_segfeature_active(xd, segment_id, SEG_LVL_SKIP)) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
1030
1031