vp9_blockd.h 28.1 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
#ifndef VP9_COMMON_VP9_BLOCKD_H_
#define VP9_COMMON_VP9_BLOCKD_H_
John Koleszar's avatar
John Koleszar committed
14

15
#include "./vpx_config.h"
John Koleszar's avatar
John Koleszar committed
16
#include "vpx_scale/yv12config.h"
17
#include "vp9/common/vp9_convolve.h"
18
19
#include "vp9/common/vp9_mv.h"
#include "vp9/common/vp9_treecoder.h"
John Koleszar's avatar
John Koleszar committed
20
#include "vpx_ports/mem.h"
21
#include "vp9/common/vp9_common.h"
22
#include "vp9/common/vp9_enums.h"
John Koleszar's avatar
John Koleszar committed
23

24
#define BLOCK_SIZE_GROUPS   4
25
26
#define MAX_MB_SEGMENTS     8
#define MB_SEG_TREE_PROBS   (MAX_MB_SEGMENTS-1)
27

Ronald S. Bultje's avatar
Ronald S. Bultje committed
28
#define PREDICTION_PROBS 3
29

30
31
#define MBSKIP_CONTEXTS 3

John Koleszar's avatar
John Koleszar committed
32
#define MAX_REF_LF_DELTAS       4
33
#define MAX_MODE_LF_DELTAS      2
John Koleszar's avatar
John Koleszar committed
34

35
/* Segment Feature Masks */
John Koleszar's avatar
John Koleszar committed
36
37
#define SEGMENT_DELTADATA   0
#define SEGMENT_ABSDATA     1
Paul Wilkins's avatar
Paul Wilkins committed
38
#define MAX_MV_REF_CANDIDATES 2
John Koleszar's avatar
John Koleszar committed
39

Ronald S. Bultje's avatar
Ronald S. Bultje committed
40
41
42
43
#define INTRA_INTER_CONTEXTS 4
#define COMP_INTER_CONTEXTS 5
#define REF_CONTEXTS 5

Dmitry Kovalev's avatar
Dmitry Kovalev committed
44
typedef enum {
45
  PLANE_TYPE_Y_WITH_DC,
46
  PLANE_TYPE_UV,
47
} PLANE_TYPE;
Scott LaVarnway's avatar
Scott LaVarnway committed
48

49
typedef char ENTROPY_CONTEXT;
John Koleszar's avatar
John Koleszar committed
50

51
52
typedef char PARTITION_CONTEXT;

53
54
55
56
static INLINE int combine_entropy_contexts(ENTROPY_CONTEXT a,
                                           ENTROPY_CONTEXT b) {
  return (a != 0) + (b != 0);
}
John Koleszar's avatar
John Koleszar committed
57

John Koleszar's avatar
John Koleszar committed
58
59
typedef enum {
  KEY_FRAME = 0,
60
61
  INTER_FRAME = 1,
  NUM_FRAME_TYPES,
John Koleszar's avatar
John Koleszar committed
62
63
} FRAME_TYPE;

Dmitry Kovalev's avatar
Dmitry Kovalev committed
64
typedef enum {
Adrian Grange's avatar
Adrian Grange committed
65
66
67
68
  EIGHTTAP_SMOOTH,
  EIGHTTAP,
  EIGHTTAP_SHARP,
  BILINEAR,
69
70
71
  SWITCHABLE  /* should be the last one */
} INTERPOLATIONFILTERTYPE;

Dmitry Kovalev's avatar
Dmitry Kovalev committed
72
typedef enum {
73
74
75
76
77
78
79
80
81
82
  DC_PRED,         // Average of above and left pixels
  V_PRED,          // Vertical
  H_PRED,          // Horizontal
  D45_PRED,        // Directional 45  deg = round(arctan(1/1) * 180/pi)
  D135_PRED,       // Directional 135 deg = 180 - 45
  D117_PRED,       // Directional 117 deg = 180 - 63
  D153_PRED,       // Directional 153 deg = 180 - 27
  D27_PRED,        // Directional 27  deg = round(arctan(1/2) * 180/pi)
  D63_PRED,        // Directional 63  deg = round(arctan(2/1) * 180/pi)
  TM_PRED,         // True-motion
John Koleszar's avatar
John Koleszar committed
83
84
85
86
87
  NEARESTMV,
  NEARMV,
  ZEROMV,
  NEWMV,
  MB_MODE_COUNT
John Koleszar's avatar
John Koleszar committed
88
89
} MB_PREDICTION_MODE;

90
static INLINE int is_inter_mode(MB_PREDICTION_MODE mode) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
91
  return mode >= NEARESTMV && mode <= NEWMV;
92
93
}

Paul Wilkins's avatar
Paul Wilkins committed
94
// Segment level features.
John Koleszar's avatar
John Koleszar committed
95
96
97
98
typedef enum {
  SEG_LVL_ALT_Q = 0,               // Use alternate Quantizer ....
  SEG_LVL_ALT_LF = 1,              // Use alternate loop filter value...
  SEG_LVL_REF_FRAME = 2,           // Optional Segment reference frame
Paul Wilkins's avatar
Paul Wilkins committed
99
  SEG_LVL_SKIP = 3,                // Optional Segment (0,0) + skip mode
Paul Wilkins's avatar
Paul Wilkins committed
100
  SEG_LVL_MAX = 4                  // Number of MB level features supported
Paul Wilkins's avatar
Paul Wilkins committed
101
} SEG_LVL_FEATURES;
John Koleszar's avatar
John Koleszar committed
102

Paul Wilkins's avatar
Paul Wilkins committed
103
// Segment level features.
John Koleszar's avatar
John Koleszar committed
104
typedef enum {
Yaowu Xu's avatar
Yaowu Xu committed
105
106
107
  TX_4X4 = 0,                      // 4x4 dct transform
  TX_8X8 = 1,                      // 8x8 dct transform
  TX_16X16 = 2,                    // 16x16 dct transform
Ronald S. Bultje's avatar
Ronald S. Bultje committed
108
  TX_32X32 = 3,                    // 32x32 dct transform
Yaowu Xu's avatar
Yaowu Xu committed
109
  TX_SIZE_MAX_SB,                  // Number of transforms available to SBs
Paul Wilkins's avatar
Paul Wilkins committed
110
111
} TX_SIZE;

Jingning Han's avatar
Jingning Han committed
112
113
typedef enum {
  DCT_DCT   = 0,                      // DCT  in both horizontal and vertical
114
115
  ADST_DCT  = 1,                      // ADST in vertical, DCT in horizontal
  DCT_ADST  = 2,                      // DCT  in vertical, ADST in horizontal
Jingning Han's avatar
Jingning Han committed
116
117
118
  ADST_ADST = 3                       // ADST in both directions
} TX_TYPE;

119
#define VP9_INTRA_MODES (TM_PRED + 1)
John Koleszar's avatar
John Koleszar committed
120

121
#define VP9_INTER_MODES (1 + NEWMV - NEARESTMV)
John Koleszar's avatar
John Koleszar committed
122

Yaowu Xu's avatar
Yaowu Xu committed
123
#define WHT_UPSCALE_FACTOR 2
124

125
126
#define TX_SIZE_PROBS  6  // (TX_SIZE_MAX_SB * (TX_SIZE_MAX_SB - 1) / 2)

127
128
129
130
#define get_tx_probs(c, b) ((b) < BLOCK_SIZE_MB16X16 ? \
                            (c)->fc.tx_probs_8x8p :    \
                            (b) < BLOCK_SIZE_SB32X32 ? \
                            (c)->fc.tx_probs_16x16p : (c)->fc.tx_probs_32x32p)
131

John Koleszar's avatar
John Koleszar committed
132
133
134
135
/* For keyframes, intra block modes are predicted by the (already decoded)
   modes for the Y blocks to the left and above us; for interframes, there
   is a single probability table. */

John Koleszar's avatar
John Koleszar committed
136
137
union b_mode_info {
  struct {
138
    MB_PREDICTION_MODE first;
John Koleszar's avatar
John Koleszar committed
139
  } as_mode;
140
  int_mv as_mv[2];  // first, second inter predictor motion vectors
141
};
John Koleszar's avatar
John Koleszar committed
142

John Koleszar's avatar
John Koleszar committed
143
typedef enum {
144
  NONE = -1,
John Koleszar's avatar
John Koleszar committed
145
146
147
148
149
  INTRA_FRAME = 0,
  LAST_FRAME = 1,
  GOLDEN_FRAME = 2,
  ALTREF_FRAME = 3,
  MAX_REF_FRAMES = 4
John Koleszar's avatar
John Koleszar committed
150
151
} MV_REFERENCE_FRAME;

152
static INLINE int b_width_log2(BLOCK_SIZE_TYPE sb_type) {
153
  switch (sb_type) {
154
    case BLOCK_SIZE_SB4X8:
155
    case BLOCK_SIZE_AB4X4: return 0;
156
    case BLOCK_SIZE_SB8X4:
157
158
    case BLOCK_SIZE_SB8X8:
    case BLOCK_SIZE_SB8X16: return 1;
159
    case BLOCK_SIZE_SB16X8:
160
    case BLOCK_SIZE_MB16X16:
161
    case BLOCK_SIZE_SB16X32: return 2;
162
    case BLOCK_SIZE_SB32X16:
163
164
    case BLOCK_SIZE_SB32X32:
    case BLOCK_SIZE_SB32X64: return 3;
165
    case BLOCK_SIZE_SB64X32:
166
    case BLOCK_SIZE_SB64X64: return 4;
167
    default: assert(0);
168
      return -1;
169
170
171
  }
}

172
static INLINE int b_height_log2(BLOCK_SIZE_TYPE sb_type) {
173
  switch (sb_type) {
174
    case BLOCK_SIZE_SB8X4:
175
    case BLOCK_SIZE_AB4X4: return 0;
176
    case BLOCK_SIZE_SB4X8:
177
178
    case BLOCK_SIZE_SB8X8:
    case BLOCK_SIZE_SB16X8: return 1;
179
    case BLOCK_SIZE_SB8X16:
180
    case BLOCK_SIZE_MB16X16:
181
    case BLOCK_SIZE_SB32X16: return 2;
182
    case BLOCK_SIZE_SB16X32:
183
184
    case BLOCK_SIZE_SB32X32:
    case BLOCK_SIZE_SB64X32: return 3;
185
    case BLOCK_SIZE_SB32X64:
186
    case BLOCK_SIZE_SB64X64: return 4;
187
    default: assert(0);
188
      return -1;
189
190
  }
}
Ronald S. Bultje's avatar
Ronald S. Bultje committed
191

192
193
static INLINE int mi_width_log2(BLOCK_SIZE_TYPE sb_type) {
  int a = b_width_log2(sb_type) - 1;
194
195
196
  // align 4x4 block to mode_info
  if (a < 0)
    a = 0;
197
198
  assert(a >= 0);
  return a;
199
200
}

201
202
static INLINE int mi_height_log2(BLOCK_SIZE_TYPE sb_type) {
  int a = b_height_log2(sb_type) - 1;
203
204
  if (a < 0)
    a = 0;
205
206
  assert(a >= 0);
  return a;
207
208
}

John Koleszar's avatar
John Koleszar committed
209
210
typedef struct {
  MB_PREDICTION_MODE mode, uv_mode;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
211
  MV_REFERENCE_FRAME ref_frame[2];
John Koleszar's avatar
John Koleszar committed
212
  TX_SIZE txfm_size;
213
  int_mv mv[2]; // for each reference frame used
Paul Wilkins's avatar
Paul Wilkins committed
214
  int_mv ref_mvs[MAX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
Deb Mukherjee's avatar
Deb Mukherjee committed
215
  int_mv best_mv, best_second_mv;
Paul Wilkins's avatar
Paul Wilkins committed
216

Paul Wilkins's avatar
Paul Wilkins committed
217
218
  int mb_mode_context[MAX_REF_FRAMES];

John Koleszar's avatar
John Koleszar committed
219
  unsigned char mb_skip_coeff;                                /* does this mb has coefficients at all, 1=no coefficients, 0=need decode tokens */
220
  unsigned char segment_id;           // Segment id for current frame
John Koleszar's avatar
John Koleszar committed
221
222
223
224
225
226
227
228

  // Flags used for prediction status of various bistream signals
  unsigned char seg_id_predicted;

  // Indicates if the mb is part of the image (1) vs border (0)
  // This can be useful in determining whether the MB provides
  // a valid predictor
  unsigned char mb_in_image;
229

230
  INTERPOLATIONFILTERTYPE interp_filter;
231

Ronald S. Bultje's avatar
Ronald S. Bultje committed
232
  BLOCK_SIZE_TYPE sb_type;
John Koleszar's avatar
John Koleszar committed
233
234
} MB_MODE_INFO;

John Koleszar's avatar
John Koleszar committed
235
236
typedef struct {
  MB_MODE_INFO mbmi;
237
  union b_mode_info bmi[4];
John Koleszar's avatar
John Koleszar committed
238
239
} MODE_INFO;

240
#define VP9_REF_SCALE_SHIFT 14
241
struct scale_factors {
242
243
  int x_scale_fp;   // horizontal fixed point scale factor
  int y_scale_fp;   // vertical fixed point scale factor
244
  int x_offset_q4;
245
  int x_step_q4;
246
  int y_offset_q4;
247
  int y_step_q4;
248
249
250
251

  int (*scale_value_x)(int val, const struct scale_factors *scale);
  int (*scale_value_y)(int val, const struct scale_factors *scale);
  void (*set_scaled_offsets)(struct scale_factors *scale, int row, int col);
252
253
  int_mv32 (*scale_mv_q3_to_q4)(const int_mv *src_mv,
                                const struct scale_factors *scale);
254
  int32_t (*scale_mv_component_q4)(int mv_q4, int scale_fp, int offset_q4);
255

256
  convolve_fn_t predict[2][2][2];  // horiz, vert, avg
257
258
};

259
260
261
#if CONFIG_ALPHA
enum { MAX_MB_PLANE = 4 };
#else
262
enum { MAX_MB_PLANE = 3 };
263
#endif
264

265
266
267
268
269
struct buf_2d {
  uint8_t *buf;
  int stride;
};

270
struct macroblockd_plane {
271
272
  DECLARE_ALIGNED(16, int16_t,  qcoeff[64 * 64]);
  DECLARE_ALIGNED(16, int16_t,  dqcoeff[64 * 64]);
John Koleszar's avatar
John Koleszar committed
273
  DECLARE_ALIGNED(16, uint16_t, eobs[256]);
274
275
276
  PLANE_TYPE plane_type;
  int subsampling_x;
  int subsampling_y;
277
278
  struct buf_2d dst;
  struct buf_2d pre[2];
279
  int16_t *dequant;
280
281
  ENTROPY_CONTEXT *above_context;
  ENTROPY_CONTEXT *left_context;
282
283
284
285
};

#define BLOCK_OFFSET(x, i, n) ((x) + (i) * (n))

Jim Bankoski's avatar
Jim Bankoski committed
286
typedef struct macroblockd {
287
  struct macroblockd_plane plane[MAX_MB_PLANE];
288

289
290
  struct scale_factors scale_factor[2];
  struct scale_factors scale_factor_uv[2];
John Koleszar's avatar
John Koleszar committed
291

John Koleszar's avatar
John Koleszar committed
292
293
294
  MODE_INFO *prev_mode_info_context;
  MODE_INFO *mode_info_context;
  int mode_info_stride;
John Koleszar's avatar
John Koleszar committed
295

John Koleszar's avatar
John Koleszar committed
296
  FRAME_TYPE frame_type;
John Koleszar's avatar
John Koleszar committed
297

John Koleszar's avatar
John Koleszar committed
298
299
  int up_available;
  int left_available;
300
  int right_available;
John Koleszar's avatar
John Koleszar committed
301

302
303
304
305
  // partition contexts
  PARTITION_CONTEXT *above_seg_context;
  PARTITION_CONTEXT *left_seg_context;

306
  /* 0 (disable) 1 (enable) segmentation */
John Koleszar's avatar
John Koleszar committed
307
  unsigned char segmentation_enabled;
John Koleszar's avatar
John Koleszar committed
308

John Koleszar's avatar
John Koleszar committed
309
310
  /* 0 (do not update) 1 (update) the macroblock segmentation map. */
  unsigned char update_mb_segmentation_map;
John Koleszar's avatar
John Koleszar committed
311

John Koleszar's avatar
John Koleszar committed
312
313
  /* 0 (do not update) 1 (update) the macroblock segmentation feature data. */
  unsigned char update_mb_segmentation_data;
John Koleszar's avatar
John Koleszar committed
314

John Koleszar's avatar
John Koleszar committed
315
316
  /* 0 (do not update) 1 (update) the macroblock segmentation feature data. */
  unsigned char mb_segment_abs_delta;
John Koleszar's avatar
John Koleszar committed
317

John Koleszar's avatar
John Koleszar committed
318
319
  /* Per frame flags that define which MB level features (such as quantizer or loop filter level) */
  /* are enabled and when enabled the proabilities used to decode the per MB flags in MB_MODE_INFO */
320

John Koleszar's avatar
John Koleszar committed
321
  // Probability Tree used to code Segment number
322
  vp9_prob mb_segment_tree_probs[MB_SEG_TREE_PROBS];
323

John Koleszar's avatar
John Koleszar committed
324
  // Segment features
325
  int16_t segment_feature_data[MAX_MB_SEGMENTS][SEG_LVL_MAX];
John Koleszar's avatar
John Koleszar committed
326
  unsigned int segment_feature_mask[MAX_MB_SEGMENTS];
John Koleszar's avatar
John Koleszar committed
327

John Koleszar's avatar
John Koleszar committed
328
329
330
331
332
  /* mode_based Loop filter adjustment */
  unsigned char mode_ref_lf_delta_enabled;
  unsigned char mode_ref_lf_delta_update;

  /* Delta values have the range +/- MAX_LOOP_FILTER */
Yaowu Xu's avatar
Yaowu Xu committed
333
334
335
336
  /* 0 = Intra, Last, GF, ARF */
  signed char last_ref_lf_deltas[MAX_REF_LF_DELTAS];
  /* 0 = Intra, Last, GF, ARF */
  signed char ref_lf_deltas[MAX_REF_LF_DELTAS];
337
  /* 0 = ZERO_MV, MV */
Yaowu Xu's avatar
Yaowu Xu committed
338
  signed char last_mode_lf_deltas[MAX_MODE_LF_DELTAS];
339
  /* 0 = ZERO_MV, MV */
Yaowu Xu's avatar
Yaowu Xu committed
340
  signed char mode_lf_deltas[MAX_MODE_LF_DELTAS];
John Koleszar's avatar
John Koleszar committed
341
342
343
344
345
346
347
348
349

  /* Distance of MB away from frame edges */
  int mb_to_left_edge;
  int mb_to_right_edge;
  int mb_to_top_edge;
  int mb_to_bottom_edge;

  unsigned int frames_since_golden;
  unsigned int frames_till_alt_ref_frame;
350

Yaowu Xu's avatar
Yaowu Xu committed
351
  int lossless;
352
  /* Inverse transform function pointers. */
Scott LaVarnway's avatar
Scott LaVarnway committed
353
354
  void (*inv_txm4x4_1_add)(int16_t *input, uint8_t *dest, int stride);
  void (*inv_txm4x4_add)(int16_t *input, uint8_t *dest, int stride);
355
  void (*itxm_add)(int16_t *input, uint8_t *dest, int stride, int eob);
356

357
  struct subpix_fn_table  subpix;
358

John Koleszar's avatar
John Koleszar committed
359
  int allow_high_precision_mv;
John Koleszar's avatar
John Koleszar committed
360

John Koleszar's avatar
John Koleszar committed
361
  int corrupted;
362

363
364
365
  int sb_index;   // index of 32x32 block inside the 64x64 block
  int mb_index;   // index of 16x16 block inside the 32x32 block
  int b_index;    // index of 8x8 block inside the 16x16 block
366
  int ab_index;   // index of 4x4 block inside the 8x8 block
Jingning Han's avatar
Jingning Han committed
367
368
  int q_index;

John Koleszar's avatar
John Koleszar committed
369
370
} MACROBLOCKD;

371
372
static int *get_sb_index(MACROBLOCKD *xd, BLOCK_SIZE_TYPE subsize) {
  switch (subsize) {
373
    case BLOCK_SIZE_SB64X64:
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
    case BLOCK_SIZE_SB64X32:
    case BLOCK_SIZE_SB32X64:
    case BLOCK_SIZE_SB32X32:
      return &xd->sb_index;
    case BLOCK_SIZE_SB32X16:
    case BLOCK_SIZE_SB16X32:
    case BLOCK_SIZE_MB16X16:
      return &xd->mb_index;
    case BLOCK_SIZE_SB16X8:
    case BLOCK_SIZE_SB8X16:
    case BLOCK_SIZE_SB8X8:
      return &xd->b_index;
    case BLOCK_SIZE_SB8X4:
    case BLOCK_SIZE_SB4X8:
    case BLOCK_SIZE_AB4X4:
      return &xd->ab_index;
    default:
      assert(0);
      return NULL;
  }
}

396
397
398
static INLINE void update_partition_context(MACROBLOCKD *xd,
                                            BLOCK_SIZE_TYPE sb_type,
                                            BLOCK_SIZE_TYPE sb_size) {
399
400
401
402
  int bsl = b_width_log2(sb_size), bs = (1 << bsl) / 2;
  int bwl = b_width_log2(sb_type);
  int bhl = b_height_log2(sb_type);
  int boffset = b_width_log2(BLOCK_SIZE_SB64X64) - bsl;
403
  int i;
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
  // update the partition context at the end notes. set partition bits
  // of block sizes larger than the current one to be one, and partition
  // bits of smaller block sizes to be zero.
  if ((bwl == bsl) && (bhl == bsl)) {
    for (i = 0; i < bs; i++)
      xd->left_seg_context[i] = ~(0xf << boffset);
    for (i = 0; i < bs; i++)
      xd->above_seg_context[i] = ~(0xf << boffset);
  } else if ((bwl == bsl) && (bhl < bsl)) {
    for (i = 0; i < bs; i++)
      xd->left_seg_context[i] = ~(0xe << boffset);
    for (i = 0; i < bs; i++)
      xd->above_seg_context[i] = ~(0xf << boffset);
  }  else if ((bwl < bsl) && (bhl == bsl)) {
    for (i = 0; i < bs; i++)
      xd->left_seg_context[i] = ~(0xf << boffset);
    for (i = 0; i < bs; i++)
      xd->above_seg_context[i] = ~(0xe << boffset);
  } else if ((bwl < bsl) && (bhl < bsl)) {
    for (i = 0; i < bs; i++)
      xd->left_seg_context[i] = ~(0xe << boffset);
    for (i = 0; i < bs; i++)
      xd->above_seg_context[i] = ~(0xe << boffset);
  } else {
    assert(0);
  }
}

static INLINE int partition_plane_context(MACROBLOCKD *xd,
                                          BLOCK_SIZE_TYPE sb_type) {
435
  int bsl = mi_width_log2(sb_type), bs = 1 << bsl;
436
  int above = 0, left = 0, i;
437
  int boffset = mi_width_log2(BLOCK_SIZE_SB64X64) - bsl;
438

439
  assert(mi_width_log2(sb_type) == mi_height_log2(sb_type));
440
441
442
443
444
445
446
447
448
449
450
  assert(bsl >= 0);
  assert(boffset >= 0);

  for (i = 0; i < bs; i++)
    above |= (xd->above_seg_context[i] & (1 << boffset));
  for (i = 0; i < bs; i++)
    left |= (xd->left_seg_context[i] & (1 << boffset));

  above = (above > 0);
  left  = (left > 0);

451
  return (left * 2 + above) + bsl * PARTITION_PLOFFSET;
452
453
}

454
455
456
457
458
459
460
461
462
463
464
465
466
467
static BLOCK_SIZE_TYPE get_subsize(BLOCK_SIZE_TYPE bsize,
                                   PARTITION_TYPE partition) {
  BLOCK_SIZE_TYPE subsize;
  switch (partition) {
    case PARTITION_NONE:
      subsize = bsize;
      break;
    case PARTITION_HORZ:
      if (bsize == BLOCK_SIZE_SB64X64)
        subsize = BLOCK_SIZE_SB64X32;
      else if (bsize == BLOCK_SIZE_SB32X32)
        subsize = BLOCK_SIZE_SB32X16;
      else if (bsize == BLOCK_SIZE_MB16X16)
        subsize = BLOCK_SIZE_SB16X8;
468
469
      else if (bsize == BLOCK_SIZE_SB8X8)
        subsize = BLOCK_SIZE_SB8X4;
470
471
472
473
474
475
476
477
478
479
      else
        assert(0);
      break;
    case PARTITION_VERT:
      if (bsize == BLOCK_SIZE_SB64X64)
        subsize = BLOCK_SIZE_SB32X64;
      else if (bsize == BLOCK_SIZE_SB32X32)
        subsize = BLOCK_SIZE_SB16X32;
      else if (bsize == BLOCK_SIZE_MB16X16)
        subsize = BLOCK_SIZE_SB8X16;
480
481
      else if (bsize == BLOCK_SIZE_SB8X8)
        subsize = BLOCK_SIZE_SB4X8;
482
483
484
485
486
487
488
489
490
491
      else
        assert(0);
      break;
    case PARTITION_SPLIT:
      if (bsize == BLOCK_SIZE_SB64X64)
        subsize = BLOCK_SIZE_SB32X32;
      else if (bsize == BLOCK_SIZE_SB32X32)
        subsize = BLOCK_SIZE_MB16X16;
      else if (bsize == BLOCK_SIZE_MB16X16)
        subsize = BLOCK_SIZE_SB8X8;
492
493
      else if (bsize == BLOCK_SIZE_SB8X8)
        subsize = BLOCK_SIZE_AB4X4;
494
495
496
497
498
499
500
501
502
      else
        assert(0);
      break;
    default:
      assert(0);
  }
  return subsize;
}

503
// transform mapping
504
static TX_TYPE txfm_map(MB_PREDICTION_MODE bmode) {
505
  switch (bmode) {
506
507
    case TM_PRED :
    case D135_PRED :
Dmitry Kovalev's avatar
Dmitry Kovalev committed
508
      return ADST_ADST;
509

510
511
512
    case V_PRED :
    case D117_PRED :
    case D63_PRED:
Dmitry Kovalev's avatar
Dmitry Kovalev committed
513
      return ADST_DCT;
514

515
516
517
    case H_PRED :
    case D153_PRED :
    case D27_PRED :
Dmitry Kovalev's avatar
Dmitry Kovalev committed
518
      return DCT_ADST;
519

Dmitry Kovalev's avatar
Dmitry Kovalev committed
520
521
    default:
      return DCT_DCT;
522
  }
Deb Mukherjee's avatar
Deb Mukherjee committed
523
524
}

525
static TX_TYPE get_tx_type_4x4(const MACROBLOCKD *xd, int ib) {
Ronald S. Bultje's avatar
Ronald S. Bultje committed
526
527
528
  TX_TYPE tx_type;
  MODE_INFO *mi = xd->mode_info_context;
  MB_MODE_INFO *const mbmi = &mi->mbmi;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
529
  if (xd->lossless || mbmi->ref_frame[0] != INTRA_FRAME)
Yaowu Xu's avatar
Yaowu Xu committed
530
    return DCT_DCT;
Ronald S. Bultje's avatar
Ronald S. Bultje committed
531
532
533
534
535
  if (mbmi->sb_type < BLOCK_SIZE_SB8X8) {
    tx_type = txfm_map(mi->bmi[ib].as_mode.first);
  } else {
    assert(mbmi->mode <= TM_PRED);
    tx_type = txfm_map(mbmi->mode);
Deb Mukherjee's avatar
Deb Mukherjee committed
536
537
538
539
  }
  return tx_type;
}

540
static TX_TYPE get_tx_type_8x8(const MACROBLOCKD *xd, int ib) {
Deb Mukherjee's avatar
Deb Mukherjee committed
541
  TX_TYPE tx_type = DCT_DCT;
542
  if (xd->mode_info_context->mbmi.mode <= TM_PRED) {
Yaowu Xu's avatar
Yaowu Xu committed
543
    tx_type = txfm_map(xd->mode_info_context->mbmi.mode);
Deb Mukherjee's avatar
Deb Mukherjee committed
544
545
  }
  return tx_type;
546
}
547

548
static TX_TYPE get_tx_type_16x16(const MACROBLOCKD *xd, int ib) {
Deb Mukherjee's avatar
Deb Mukherjee committed
549
  TX_TYPE tx_type = DCT_DCT;
550
  if (xd->mode_info_context->mbmi.mode <= TM_PRED) {
Yaowu Xu's avatar
Yaowu Xu committed
551
    tx_type = txfm_map(xd->mode_info_context->mbmi.mode);
Deb Mukherjee's avatar
Deb Mukherjee committed
552
553
554
555
  }
  return tx_type;
}

556
557
void vp9_setup_block_dptrs(MACROBLOCKD *xd,
                           int subsampling_x, int subsampling_y);
John Koleszar's avatar
John Koleszar committed
558

559
static TX_SIZE get_uv_tx_size(const MB_MODE_INFO *mbmi) {
Dmitry Kovalev's avatar
Dmitry Kovalev committed
560
561
562
563
564
  const TX_SIZE size = mbmi->txfm_size;

  switch (mbmi->sb_type) {
    case BLOCK_SIZE_SB64X64:
      return size;
565
566
    case BLOCK_SIZE_SB64X32:
    case BLOCK_SIZE_SB32X64:
Dmitry Kovalev's avatar
Dmitry Kovalev committed
567
568
569
570
571
    case BLOCK_SIZE_SB32X32:
      if (size == TX_32X32)
        return TX_16X16;
      else
        return size;
572
573
574
575
576
577
578
579
580
    case BLOCK_SIZE_SB32X16:
    case BLOCK_SIZE_SB16X32:
    case BLOCK_SIZE_MB16X16:
      if (size == TX_16X16)
        return TX_8X8;
      else
        return size;
    default:
      return TX_4X4;
581
  }
Dmitry Kovalev's avatar
Dmitry Kovalev committed
582
583

  return size;
584
}
585

586
587
588
589
590
591
592
struct plane_block_idx {
  int plane;
  int block;
};

// TODO(jkoleszar): returning a struct so it can be used in a const context,
// expect to refactor this further later.
John Koleszar's avatar
John Koleszar committed
593
static INLINE struct plane_block_idx plane_block_idx(int y_blocks,
594
                                                     int b_idx) {
John Koleszar's avatar
John Koleszar committed
595
  const int v_offset = y_blocks * 5 / 4;
596
597
  struct plane_block_idx res;

John Koleszar's avatar
John Koleszar committed
598
  if (b_idx < y_blocks) {
599
600
601
602
    res.plane = 0;
    res.block = b_idx;
  } else if (b_idx < v_offset) {
    res.plane = 1;
John Koleszar's avatar
John Koleszar committed
603
    res.block = b_idx - y_blocks;
604
  } else {
John Koleszar's avatar
John Koleszar committed
605
    assert(b_idx < y_blocks * 3 / 2);
606
607
608
609
610
611
    res.plane = 2;
    res.block = b_idx - v_offset;
  }
  return res;
}

612
613
614
615
616
617
618
619
620
621
static INLINE int plane_block_width(BLOCK_SIZE_TYPE bsize,
                                    const struct macroblockd_plane* plane) {
  return 4 << (b_width_log2(bsize) - plane->subsampling_x);
}

static INLINE int plane_block_height(BLOCK_SIZE_TYPE bsize,
                                     const struct macroblockd_plane* plane) {
  return 4 << (b_height_log2(bsize) - plane->subsampling_y);
}

John Koleszar's avatar
John Koleszar committed
622
typedef void (*foreach_transformed_block_visitor)(int plane, int block,
623
                                                  BLOCK_SIZE_TYPE bsize,
John Koleszar's avatar
John Koleszar committed
624
625
                                                  int ss_txfrm_size,
                                                  void *arg);
Jingning Han's avatar
Jingning Han committed
626

John Koleszar's avatar
John Koleszar committed
627
static INLINE void foreach_transformed_block_in_plane(
628
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize, int plane,
629
    foreach_transformed_block_visitor visit, void *arg) {
630
631
  const int bw = b_width_log2(bsize), bh = b_height_log2(bsize);

John Koleszar's avatar
John Koleszar committed
632
633
  // block and transform sizes, in number of 4x4 blocks log 2 ("*_b")
  // 4x4=0, 8x8=2, 16x16=4, 32x32=6, 64x64=8
John Koleszar's avatar
John Koleszar committed
634
  // transform size varies per plane, look it up in a common way.
635
636
637
  const MB_MODE_INFO* mbmi = &xd->mode_info_context->mbmi;
  const TX_SIZE tx_size = plane ? get_uv_tx_size(mbmi)
                                : mbmi->txfm_size;
638
  const int block_size_b = bw + bh;
John Koleszar's avatar
John Koleszar committed
639
640
641
  const int txfrm_size_b = tx_size * 2;

  // subsampled size of the block
642
643
  const int ss_sum = xd->plane[plane].subsampling_x
      + xd->plane[plane].subsampling_y;
John Koleszar's avatar
John Koleszar committed
644
645
  const int ss_block_size = block_size_b - ss_sum;

John Koleszar's avatar
John Koleszar committed
646
  const int step = 1 << txfrm_size_b;
John Koleszar's avatar
John Koleszar committed
647
648
649
650

  int i;

  assert(txfrm_size_b <= block_size_b);
John Koleszar's avatar
John Koleszar committed
651
  assert(txfrm_size_b <= ss_block_size);
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687

  // If mb_to_right_edge is < 0 we are in a situation in which
  // the current block size extends into the UMV and we won't
  // visit the sub blocks that are wholly within the UMV.
  if (xd->mb_to_right_edge < 0 || xd->mb_to_bottom_edge < 0) {
    int r, c;
    const int sw = bw - xd->plane[plane].subsampling_x;
    const int sh = bh - xd->plane[plane].subsampling_y;
    int max_blocks_wide = 1 << sw;
    int max_blocks_high = 1 << sh;

    // xd->mb_to_right_edge is in units of pixels * 8.  This converts
    // it to 4x4 block sizes.
    if (xd->mb_to_right_edge < 0)
      max_blocks_wide +=
          + (xd->mb_to_right_edge >> (5 + xd->plane[plane].subsampling_x));

    if (xd->mb_to_bottom_edge < 0)
      max_blocks_high +=
          + (xd->mb_to_bottom_edge >> (5 + xd->plane[plane].subsampling_y));

    i = 0;
    // Unlike the normal case - in here we have to keep track of the
    // row and column of the blocks we use so that we know if we are in
    // the unrestricted motion border..
    for (r = 0; r < (1 << sh); r += (1 << tx_size)) {
      for (c = 0; c < (1 << sw); c += (1 << tx_size)) {
        if (r < max_blocks_high && c < max_blocks_wide)
          visit(plane, i, bsize, txfrm_size_b, arg);
        i += step;
      }
    }
  } else {
    for (i = 0; i < (1 << ss_block_size); i += step) {
      visit(plane, i, bsize, txfrm_size_b, arg);
    }
John Koleszar's avatar
John Koleszar committed
688
689
690
691
  }
}

static INLINE void foreach_transformed_block(
692
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize,
John Koleszar's avatar
John Koleszar committed
693
694
695
696
    foreach_transformed_block_visitor visit, void *arg) {
  int plane;

  for (plane = 0; plane < MAX_MB_PLANE; plane++) {
697
    foreach_transformed_block_in_plane(xd, bsize, plane,
John Koleszar's avatar
John Koleszar committed
698
699
700
                                       visit, arg);
  }
}
701

702
static INLINE void foreach_transformed_block_uv(
703
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize,
704
705
706
707
    foreach_transformed_block_visitor visit, void *arg) {
  int plane;

  for (plane = 1; plane < MAX_MB_PLANE; plane++) {
708
    foreach_transformed_block_in_plane(xd, bsize, plane,
709
710
711
712
                                       visit, arg);
  }
}

713
714
715
716
717
718
719
720
721
722
// TODO(jkoleszar): In principle, pred_w, pred_h are unnecessary, as we could
// calculate the subsampled BLOCK_SIZE_TYPE, but that type isn't defined for
// sizes smaller than 16x16 yet.
typedef void (*foreach_predicted_block_visitor)(int plane, int block,
                                                BLOCK_SIZE_TYPE bsize,
                                                int pred_w, int pred_h,
                                                void *arg);
static INLINE void foreach_predicted_block_in_plane(
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize, int plane,
    foreach_predicted_block_visitor visit, void *arg) {
723
  int i, x, y;
724
725
726
727

  // block sizes in number of 4x4 blocks log 2 ("*_b")
  // 4x4=0, 8x8=2, 16x16=4, 32x32=6, 64x64=8
  // subsampled size of the block
728
729
  const int bwl = b_width_log2(bsize) - xd->plane[plane].subsampling_x;
  const int bhl = b_height_log2(bsize) - xd->plane[plane].subsampling_y;
730
731

  // size of the predictor to use.
732
733
  int pred_w, pred_h;

Ronald S. Bultje's avatar
Ronald S. Bultje committed
734
735
  if (xd->mode_info_context->mbmi.sb_type < BLOCK_SIZE_SB8X8) {
    assert(bsize == BLOCK_SIZE_SB8X8);
736
737
    pred_w = 0;
    pred_h = 0;
738
  } else {
739
740
    pred_w = bwl;
    pred_h = bhl;
741
  }
742
743
  assert(pred_w <= bwl);
  assert(pred_h <= bhl);
744
745
746

  // visit each subblock in raster order
  i = 0;
747
748
  for (y = 0; y < 1 << bhl; y += 1 << pred_h) {
    for (x = 0; x < 1 << bwl; x += 1 << pred_w) {
749
750
751
      visit(plane, i, bsize, pred_w, pred_h, arg);
      i += 1 << pred_w;
    }
752
    i += (1 << (bwl + pred_h)) - (1 << bwl);
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
  }
}
static INLINE void foreach_predicted_block(
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize,
    foreach_predicted_block_visitor visit, void *arg) {
  int plane;

  for (plane = 0; plane < MAX_MB_PLANE; plane++) {
    foreach_predicted_block_in_plane(xd, bsize, plane, visit, arg);
  }
}
static INLINE void foreach_predicted_block_uv(
    const MACROBLOCKD* const xd, BLOCK_SIZE_TYPE bsize,
    foreach_predicted_block_visitor visit, void *arg) {
  int plane;

  for (plane = 1; plane < MAX_MB_PLANE; plane++) {
    foreach_predicted_block_in_plane(xd, bsize, plane, visit, arg);
  }
}
773
static int raster_block_offset(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize,
John Koleszar's avatar
John Koleszar committed
774
                               int plane, int block, int stride) {
775
776
777
778
779
780
781
  const int bw = b_width_log2(bsize) - xd->plane[plane].subsampling_x;
  const int y = 4 * (block >> bw), x = 4 * (block & ((1 << bw) - 1));
  return y * stride + x;
}
static int16_t* raster_block_offset_int16(MACROBLOCKD *xd,
                                         BLOCK_SIZE_TYPE bsize,
                                         int plane, int block, int16_t *base) {
782
  const int stride = plane_block_width(bsize, &xd->plane[plane]);
John Koleszar's avatar
John Koleszar committed
783
784
785
786
787
788
789
  return base + raster_block_offset(xd, bsize, plane, block, stride);
}
static uint8_t* raster_block_offset_uint8(MACROBLOCKD *xd,
                                         BLOCK_SIZE_TYPE bsize,
                                         int plane, int block,
                                         uint8_t *base, int stride) {
  return base + raster_block_offset(xd, bsize, plane, block, stride);
790
}
791

John Koleszar's avatar
John Koleszar committed
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
static int txfrm_block_to_raster_block(MACROBLOCKD *xd,
                                       BLOCK_SIZE_TYPE bsize,
                                       int plane, int block,
                                       int ss_txfrm_size) {
  const int bwl = b_width_log2(bsize) - xd->plane[plane].subsampling_x;
  const int txwl = ss_txfrm_size / 2;
  const int tx_cols_lg2 = bwl - txwl;
  const int tx_cols = 1 << tx_cols_lg2;
  const int raster_mb = block >> ss_txfrm_size;
  const int x = (raster_mb & (tx_cols - 1)) << (txwl);
  const int y = raster_mb >> tx_cols_lg2 << (txwl);
  return x + (y << bwl);
}

static void txfrm_block_to_raster_xy(MACROBLOCKD *xd,
                                     BLOCK_SIZE_TYPE bsize,
                                     int plane, int block,
                                     int ss_txfrm_size,
                                     int *x, int *y) {
  const int bwl = b_width_log2(bsize) - xd->plane[plane].subsampling_x;
  const int txwl = ss_txfrm_size / 2;
  const int tx_cols_lg2 = bwl - txwl;
  const int tx_cols = 1 << tx_cols_lg2;
  const int raster_mb = block >> ss_txfrm_size;
  *x = (raster_mb & (tx_cols - 1)) << (txwl);
  *y = raster_mb >> tx_cols_lg2 << (txwl);
}
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903

static void extend_for_intra(MACROBLOCKD* const xd, int plane, int block,
                             BLOCK_SIZE_TYPE bsize, int ss_txfrm_size) {
  const int bw = plane_block_width(bsize, &xd->plane[plane]);
  const int bh = plane_block_height(bsize, &xd->plane[plane]);
  int x, y;
  txfrm_block_to_raster_xy(xd, bsize, plane, block, ss_txfrm_size, &x, &y);
  x = x * 4 - 1;
  y = y * 4 - 1;
  // Copy a pixel into the umv if we are in a situation where the block size
  // extends into the UMV.
  // TODO(JBB): Should be able to do the full extend in place so we don't have
  // to do this multiple times.
  if (xd->mb_to_right_edge < 0) {
    int umv_border_start = bw
        + (xd->mb_to_right_edge >> (3 + xd->plane[plane].subsampling_x));

    if (x + bw > umv_border_start)
      vpx_memset(
          xd->plane[plane].dst.buf + y * xd->plane[plane].dst.stride
              + umv_border_start,
          *(xd->plane[plane].dst.buf + y * xd->plane[plane].dst.stride
              + umv_border_start - 1),
          bw);
  }
  if (xd->mb_to_bottom_edge < 0) {
    int umv_border_start = bh
        + (xd->mb_to_bottom_edge >> (3 + xd->plane[plane].subsampling_y));
    int i;
    uint8_t c = *(xd->plane[plane].dst.buf
        + (umv_border_start - 1) * xd->plane[plane].dst.stride + x);

    uint8_t *d = xd->plane[plane].dst.buf
        + umv_border_start * xd->plane[plane].dst.stride + x;

    if (y + bh > umv_border_start)
      for (i = 0; i < bh; i++, d += xd->plane[plane].dst.stride)
        *d = c;
  }
}
static void set_contexts_on_border(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize,
                                   int plane, int ss_tx_size, int eob, int aoff,
                                   int loff, ENTROPY_CONTEXT *A,
                                   ENTROPY_CONTEXT *L) {
  const int bw = b_width_log2(bsize), bh = b_height_log2(bsize);
  const int sw = bw - xd->plane[plane].subsampling_x;
  const int sh = bh - xd->plane[plane].subsampling_y;
  int mi_blocks_wide = 1 << sw;
  int mi_blocks_high = 1 << sh;
  int tx_size_in_blocks = (1 << ss_tx_size);
  int above_contexts = tx_size_in_blocks;
  int left_contexts = tx_size_in_blocks;
  int pt;

  // xd->mb_to_right_edge is in units of pixels * 8.  This converts
  // it to 4x4 block sizes.
  if (xd->mb_to_right_edge < 0) {
    mi_blocks_wide += (xd->mb_to_right_edge
        >> (5 + xd->plane[plane].subsampling_x));
  }

  // this code attempts to avoid copying into contexts that are outside
  // our border.  Any blocks that do are set to 0...
  if (above_contexts + aoff > mi_blocks_wide)
    above_contexts = mi_blocks_wide - aoff;

  if (xd->mb_to_bottom_edge < 0) {
    mi_blocks_high += (xd->mb_to_bottom_edge
        >> (5 + xd->plane[plane].subsampling_y));
  }
  if (left_contexts + loff > mi_blocks_high) {
    left_contexts = mi_blocks_high - loff;
  }

  for (pt = 0; pt < above_contexts; pt++)
    A[pt] = eob > 0;
  for (pt = above_contexts; pt < (1 << ss_tx_size); pt++)
    A[pt] = 0;
  for (pt = 0; pt < left_contexts; pt++)
    L[pt] = eob > 0;
  for (pt = left_contexts; pt < (1 << ss_tx_size); pt++)
    L[pt] = 0;
}


904
#endif  // VP9_COMMON_VP9_BLOCKD_H_