vp9_detokenize.c 16.1 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
#include "vp9/common/vp9_blockd.h"
13
#include "vp9/decoder/vp9_onyxd_int.h"
John Koleszar's avatar
John Koleszar committed
14
15
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
16
#include "vp9/decoder/vp9_detokenize.h"
17
#include "vp9/common/vp9_seg_common.h"
18

John Koleszar's avatar
John Koleszar committed
19
20
21
22
23
24
25
26
27
28
29
30
#define EOB_CONTEXT_NODE            0
#define ZERO_CONTEXT_NODE           1
#define ONE_CONTEXT_NODE            2
#define LOW_VAL_CONTEXT_NODE        3
#define TWO_CONTEXT_NODE            4
#define THREE_CONTEXT_NODE          5
#define HIGH_LOW_CONTEXT_NODE       6
#define CAT_ONE_CONTEXT_NODE        7
#define CAT_THREEFOUR_CONTEXT_NODE  8
#define CAT_THREE_CONTEXT_NODE      9
#define CAT_FIVE_CONTEXT_NODE       10

Scott LaVarnway's avatar
Scott LaVarnway committed
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
#define CAT1_MIN_VAL    5
#define CAT2_MIN_VAL    7
#define CAT3_MIN_VAL   11
#define CAT4_MIN_VAL   19
#define CAT5_MIN_VAL   35
#define CAT6_MIN_VAL   67
#define CAT1_PROB0    159
#define CAT2_PROB0    145
#define CAT2_PROB1    165

#define CAT3_PROB0 140
#define CAT3_PROB1 148
#define CAT3_PROB2 173

#define CAT4_PROB0 135
#define CAT4_PROB1 140
#define CAT4_PROB2 155
#define CAT4_PROB3 176

#define CAT5_PROB0 130
#define CAT5_PROB1 134
#define CAT5_PROB2 141
#define CAT5_PROB3 157
#define CAT5_PROB4 180

56
static const vp9_prob cat6_prob[15] = {
57
58
  254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0
};
John Koleszar's avatar
John Koleszar committed
59

60
DECLARE_ALIGNED(16, extern const uint8_t, vp9_norm[256]);
61

62
static int get_signed(BOOL_DECODER *br, int value_to_sign) {
63
  return decode_bool(br, 128) ? -value_to_sign : value_to_sign;
Daniel Kang's avatar
Daniel Kang committed
64
}
John Koleszar's avatar
John Koleszar committed
65

66
67
#define INCREMENT_COUNT(token)               \
  do {                                       \
68
    coef_counts[type][ref][get_coef_band(txfm_size, c)][pt][token]++;     \
69
    pt = vp9_get_coef_context(&recent_energy, token);         \
70
71
72
  } while (0)

#define WRITE_COEF_CONTINUE(val, token)                       \
Daniel Kang's avatar
Daniel Kang committed
73
  {                                                           \
John Koleszar's avatar
John Koleszar committed
74
    qcoeff_ptr[scan[c]] = (int16_t) get_signed(br, val);        \
75
    INCREMENT_COUNT(token);                                   \
John Koleszar's avatar
John Koleszar committed
76
77
78
    c++;                                                      \
    continue;                                                 \
  }
John Koleszar's avatar
John Koleszar committed
79

Daniel Kang's avatar
Daniel Kang committed
80
81
#define ADJUST_COEF(prob, bits_count)  \
  do {                                 \
82
    if (vp9_read(br, prob))            \
John Koleszar's avatar
John Koleszar committed
83
      val += (uint16_t)(1 << bits_count);\
John Koleszar's avatar
John Koleszar committed
84
  } while (0);
John Koleszar's avatar
John Koleszar committed
85

86
static int decode_coefs(VP9D_COMP *dx, const MACROBLOCKD *xd,
87
88
                        BOOL_DECODER* const br, int block_idx,
                        PLANE_TYPE type, TX_TYPE tx_type,
John Koleszar's avatar
John Koleszar committed
89
                        int seg_eob, int16_t *qcoeff_ptr,
90
                        const int *const scan, TX_SIZE txfm_size) {
91
92
93
94
95
  ENTROPY_CONTEXT* const A0 = (ENTROPY_CONTEXT *) xd->above_context;
  ENTROPY_CONTEXT* const L0 = (ENTROPY_CONTEXT *) xd->left_context;
  const int aidx = vp9_block2above[txfm_size][block_idx];
  const int lidx = vp9_block2left[txfm_size][block_idx];
  ENTROPY_CONTEXT above_ec = A0[aidx] != 0, left_ec = L0[lidx] != 0;
John Koleszar's avatar
John Koleszar committed
96
  FRAME_CONTEXT *const fc = &dx->common.fc;
97
  int recent_energy = 0;
98
  int pt, c = 0;
99
100
101
  vp9_coeff_probs *coef_probs;
  vp9_prob *prob;
  vp9_coeff_count *coef_counts;
102
  const int ref = xd->mode_info_context->mbmi.ref_frame != INTRA_FRAME;
Daniel Kang's avatar
Daniel Kang committed
103

104
  switch (txfm_size) {
Daniel Kang's avatar
Daniel Kang committed
105
    default:
Daniel Kang's avatar
Daniel Kang committed
106
    case TX_4X4:
107
108
      coef_probs  = fc->coef_probs_4x4;
      coef_counts = fc->coef_counts_4x4;
Daniel Kang's avatar
Daniel Kang committed
109
110
      break;
    case TX_8X8:
111
112
      coef_probs  = fc->coef_probs_8x8;
      coef_counts = fc->coef_counts_8x8;
113
114
      above_ec = (A0[aidx] + A0[aidx + 1]) != 0;
      left_ec  = (L0[lidx] + L0[lidx + 1]) != 0;
Daniel Kang's avatar
Daniel Kang committed
115
      break;
Daniel Kang's avatar
Daniel Kang committed
116
    case TX_16X16:
117
118
      coef_probs  = fc->coef_probs_16x16;
      coef_counts = fc->coef_counts_16x16;
119
120
121
122
123
      if (type == PLANE_TYPE_UV) {
        ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
        ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
        above_ec = (A0[aidx] + A0[aidx + 1] + A1[aidx] + A1[aidx + 1]) != 0;
        left_ec  = (L0[lidx] + L0[lidx + 1] + L1[lidx] + L1[lidx + 1]) != 0;
124
      } else {
125
126
127
        above_ec = (A0[aidx] + A0[aidx + 1] + A0[aidx + 2] + A0[aidx + 3]) != 0;
        left_ec  = (L0[lidx] + L0[lidx + 1] + L0[lidx + 2] + L0[lidx + 3]) != 0;
      }
Daniel Kang's avatar
Daniel Kang committed
128
      break;
129
    case TX_32X32:
130
131
      coef_probs = fc->coef_probs_32x32;
      coef_counts = fc->coef_counts_32x32;
132
133
134
135
136
137
138
139
140
141
142
      if (type == PLANE_TYPE_UV) {
        ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
        ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
        ENTROPY_CONTEXT *A2 = (ENTROPY_CONTEXT *) (xd->above_context + 2);
        ENTROPY_CONTEXT *L2 = (ENTROPY_CONTEXT *) (xd->left_context + 2);
        ENTROPY_CONTEXT *A3 = (ENTROPY_CONTEXT *) (xd->above_context + 3);
        ENTROPY_CONTEXT *L3 = (ENTROPY_CONTEXT *) (xd->left_context + 3);
        above_ec = (A0[aidx] + A0[aidx + 1] + A1[aidx] + A1[aidx + 1] +
                    A2[aidx] + A2[aidx + 1] + A3[aidx] + A3[aidx + 1]) != 0;
        left_ec  = (L0[lidx] + L0[lidx + 1] + L1[lidx] + L1[lidx + 1] +
                    L2[lidx] + L2[lidx + 1] + L3[lidx] + L3[lidx + 1]) != 0;
143
      } else {
144
145
146
147
148
149
150
        ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
        ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
        above_ec = (A0[aidx] + A0[aidx + 1] + A0[aidx + 2] + A0[aidx + 3] +
                    A1[aidx] + A1[aidx + 1] + A1[aidx + 2] + A1[aidx + 3]) != 0;
        left_ec  = (L0[lidx] + L0[lidx + 1] + L0[lidx + 2] + L0[lidx + 3] +
                    L1[lidx] + L1[lidx + 1] + L1[lidx + 2] + L1[lidx + 3]) != 0;
      }
151
      break;
Daniel Kang's avatar
Daniel Kang committed
152
  }
John Koleszar's avatar
John Koleszar committed
153

154
  VP9_COMBINEENTROPYCONTEXTS(pt, above_ec, left_ec);
John Koleszar's avatar
John Koleszar committed
155
156
157
  while (1) {
    int val;
    const uint8_t *cat6 = cat6_prob;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
158
159
160

    if (c >= seg_eob)
      break;
161
    prob = coef_probs[type][ref][get_coef_band(txfm_size, c)][pt];
162
    if (!vp9_read(br, prob[EOB_CONTEXT_NODE]))
John Koleszar's avatar
John Koleszar committed
163
      break;
Daniel Kang's avatar
Daniel Kang committed
164
SKIP_START:
Dmitry Kovalev's avatar
Dmitry Kovalev committed
165
166
    if (c >= seg_eob)
      break;
167
    if (!vp9_read(br, prob[ZERO_CONTEXT_NODE])) {
168
      INCREMENT_COUNT(ZERO_TOKEN);
John Koleszar's avatar
John Koleszar committed
169
      ++c;
170
      prob = coef_probs[type][ref][get_coef_band(txfm_size, c)][pt];
John Koleszar's avatar
John Koleszar committed
171
172
173
      goto SKIP_START;
    }
    // ONE_CONTEXT_NODE_0_
174
    if (!vp9_read(br, prob[ONE_CONTEXT_NODE])) {
175
      WRITE_COEF_CONTINUE(1, ONE_TOKEN);
John Koleszar's avatar
John Koleszar committed
176
177
    }
    // LOW_VAL_CONTEXT_NODE_0_
178
179
    if (!vp9_read(br, prob[LOW_VAL_CONTEXT_NODE])) {
      if (!vp9_read(br, prob[TWO_CONTEXT_NODE])) {
180
        WRITE_COEF_CONTINUE(2, TWO_TOKEN);
John Koleszar's avatar
John Koleszar committed
181
      }
182
      if (!vp9_read(br, prob[THREE_CONTEXT_NODE])) {
183
        WRITE_COEF_CONTINUE(3, THREE_TOKEN);
John Koleszar's avatar
John Koleszar committed
184
      }
185
      WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
John Koleszar's avatar
John Koleszar committed
186
187
    }
    // HIGH_LOW_CONTEXT_NODE_0_
188
189
    if (!vp9_read(br, prob[HIGH_LOW_CONTEXT_NODE])) {
      if (!vp9_read(br, prob[CAT_ONE_CONTEXT_NODE])) {
John Koleszar's avatar
John Koleszar committed
190
191
        val = CAT1_MIN_VAL;
        ADJUST_COEF(CAT1_PROB0, 0);
192
        WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY1);
John Koleszar's avatar
John Koleszar committed
193
194
195
196
      }
      val = CAT2_MIN_VAL;
      ADJUST_COEF(CAT2_PROB1, 1);
      ADJUST_COEF(CAT2_PROB0, 0);
197
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY2);
Daniel Kang's avatar
Daniel Kang committed
198
    }
John Koleszar's avatar
John Koleszar committed
199
    // CAT_THREEFOUR_CONTEXT_NODE_0_
200
201
    if (!vp9_read(br, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
      if (!vp9_read(br, prob[CAT_THREE_CONTEXT_NODE])) {
John Koleszar's avatar
John Koleszar committed
202
203
204
205
        val = CAT3_MIN_VAL;
        ADJUST_COEF(CAT3_PROB2, 2);
        ADJUST_COEF(CAT3_PROB1, 1);
        ADJUST_COEF(CAT3_PROB0, 0);
206
        WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY3);
John Koleszar's avatar
John Koleszar committed
207
208
209
210
211
212
      }
      val = CAT4_MIN_VAL;
      ADJUST_COEF(CAT4_PROB3, 3);
      ADJUST_COEF(CAT4_PROB2, 2);
      ADJUST_COEF(CAT4_PROB1, 1);
      ADJUST_COEF(CAT4_PROB0, 0);
213
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY4);
John Koleszar's avatar
John Koleszar committed
214
215
    }
    // CAT_FIVE_CONTEXT_NODE_0_:
216
    if (!vp9_read(br, prob[CAT_FIVE_CONTEXT_NODE])) {
John Koleszar's avatar
John Koleszar committed
217
218
219
220
221
222
      val = CAT5_MIN_VAL;
      ADJUST_COEF(CAT5_PROB4, 4);
      ADJUST_COEF(CAT5_PROB3, 3);
      ADJUST_COEF(CAT5_PROB2, 2);
      ADJUST_COEF(CAT5_PROB1, 1);
      ADJUST_COEF(CAT5_PROB0, 0);
223
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY5);
John Koleszar's avatar
John Koleszar committed
224
225
226
    }
    val = 0;
    while (*cat6) {
227
      val = (val << 1) | vp9_read(br, *cat6++);
John Koleszar's avatar
John Koleszar committed
228
229
    }
    val += CAT6_MIN_VAL;
230
    WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY6);
John Koleszar's avatar
John Koleszar committed
231
  }
Jingning Han's avatar
Jingning Han committed
232

233
  if (c < seg_eob)
234
    coef_counts[type][ref][get_coef_band(txfm_size, c)][pt][DCT_EOB_TOKEN]++;
235

Dmitry Kovalev's avatar
Dmitry Kovalev committed
236
  A0[aidx] = L0[lidx] = c > 0;
237
  if (txfm_size >= TX_8X8) {
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
    A0[aidx + 1] = L0[lidx + 1] = A0[aidx];
    if (txfm_size >= TX_16X16) {
      if (type == PLANE_TYPE_UV) {
        ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
        ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
        A1[aidx] = A1[aidx + 1] = L1[aidx] = L1[lidx + 1] = A0[aidx];
        if (txfm_size >= TX_32X32) {
          ENTROPY_CONTEXT *A2 = (ENTROPY_CONTEXT *) (xd->above_context + 2);
          ENTROPY_CONTEXT *L2 = (ENTROPY_CONTEXT *) (xd->left_context + 2);
          ENTROPY_CONTEXT *A3 = (ENTROPY_CONTEXT *) (xd->above_context + 3);
          ENTROPY_CONTEXT *L3 = (ENTROPY_CONTEXT *) (xd->left_context + 3);
          A2[aidx] = A2[aidx + 1] = A3[aidx] = A3[aidx + 1] = A0[aidx];
          L2[lidx] = L2[lidx + 1] = L3[lidx] = L3[lidx + 1] = A0[aidx];
        }
      } else {
        A0[aidx + 2] = A0[aidx + 3] = L0[lidx + 2] = L0[lidx + 3] = A0[aidx];
        if (txfm_size >= TX_32X32) {
          ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
          ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
          A1[aidx] = A1[aidx + 1] = A1[aidx + 2] = A1[aidx + 3] = A0[aidx];
          L1[lidx] = L1[lidx + 1] = L1[lidx + 2] = L1[lidx + 3] = A0[aidx];
        }
      }
    }
  }
263

John Koleszar's avatar
John Koleszar committed
264
  return c;
Daniel Kang's avatar
Daniel Kang committed
265
}
John Koleszar's avatar
John Koleszar committed
266

267
static int get_eob(MACROBLOCKD* const xd, int segment_id, int eob_max) {
Dmitry Kovalev's avatar
Dmitry Kovalev committed
268
  return vp9_get_segdata(xd, segment_id, SEG_LVL_SKIP) ? 0 : eob_max;
269
270
}

271
272
273
274
int vp9_decode_sb_tokens(VP9D_COMP* const pbi,
                         MACROBLOCKD* const xd,
                         BOOL_DECODER* const bc) {
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
275
  int i, eobtotal = 0, seg_eob;
276
277

  // Luma block
Dmitry Kovalev's avatar
Dmitry Kovalev committed
278
279
280
281
  int c = decode_coefs(pbi, xd, bc, 0, PLANE_TYPE_Y_WITH_DC,
                       DCT_DCT, get_eob(xd, segment_id, 1024),
                       xd->sb_coeff_data.qcoeff,
                       vp9_default_zig_zag1d_32x32, TX_32X32);
282
  xd->eobs[0] = c;
283
284
285
286
287
  eobtotal += c;

  // 16x16 chroma blocks
  seg_eob = get_eob(xd, segment_id, 256);
  for (i = 16; i < 24; i += 4) {
288
289
290
    c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
                     xd->sb_coeff_data.qcoeff + 1024 + (i - 16) * 64,
                     vp9_default_zig_zag1d_16x16, TX_16X16);
291
    xd->eobs[i] = c;
292
293
    eobtotal += c;
  }
294

295
296
  return eobtotal;
}
297

298
299
300
static int vp9_decode_mb_tokens_16x16(VP9D_COMP* const pbi,
                                      MACROBLOCKD* const xd,
                                      BOOL_DECODER* const bc) {
Daniel Kang's avatar
Daniel Kang committed
301
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
302
  int i, eobtotal = 0, seg_eob;
Yaowu Xu's avatar
Yaowu Xu committed
303

304
  // Luma block
Dmitry Kovalev's avatar
Dmitry Kovalev committed
305
306
307
308
  int c = decode_coefs(pbi, xd, bc, 0, PLANE_TYPE_Y_WITH_DC,
                       get_tx_type(xd, &xd->block[0]),
                       get_eob(xd, segment_id, 256),
                       xd->qcoeff, vp9_default_zig_zag1d_16x16, TX_16X16);
309
  xd->eobs[0] = c;
310
  eobtotal += c;
Daniel Kang's avatar
Daniel Kang committed
311
312

  // 8x8 chroma blocks
313
  seg_eob = get_eob(xd, segment_id, 64);
Daniel Kang's avatar
Daniel Kang committed
314
  for (i = 16; i < 24; i += 4) {
315
316
317
    c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
                     DCT_DCT, seg_eob, xd->block[i].qcoeff,
                     vp9_default_zig_zag1d_8x8, TX_8X8);
318
    xd->eobs[i] = c;
Daniel Kang's avatar
Daniel Kang committed
319
320
321
322
323
    eobtotal += c;
  }
  return eobtotal;
}

324
325
326
static int vp9_decode_mb_tokens_8x8(VP9D_COMP* const pbi,
                                    MACROBLOCKD* const xd,
                                    BOOL_DECODER* const bc) {
327
  int c, i, eobtotal = 0, seg_eob;
John Koleszar's avatar
John Koleszar committed
328
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
329

330
  // luma blocks
331
  seg_eob = get_eob(xd, segment_id, 64);
332
  for (i = 0; i < 16; i += 4) {
333
334
335
336
    c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
                     get_tx_type(xd, xd->block + i),
                     seg_eob, xd->block[i].qcoeff,
                     vp9_default_zig_zag1d_8x8, TX_8X8);
337
    xd->eobs[i] = c;
John Koleszar's avatar
John Koleszar committed
338
339
340
    eobtotal += c;
  }

341
342
343
344
  // chroma blocks
  if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
      xd->mode_info_context->mbmi.mode == SPLITMV) {
    // use 4x4 transform for U, V components in I8X8/splitmv prediction mode
345
    seg_eob = get_eob(xd, segment_id, 16);
346
    for (i = 16; i < 24; i++) {
347
348
349
      c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
                       DCT_DCT, seg_eob, xd->block[i].qcoeff,
                       vp9_default_zig_zag1d_4x4, TX_4X4);
350
      xd->eobs[i] = c;
351
352
353
354
      eobtotal += c;
    }
  } else {
    for (i = 16; i < 24; i += 4) {
355
356
357
      c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
                       DCT_DCT, seg_eob, xd->block[i].qcoeff,
                       vp9_default_zig_zag1d_8x8, TX_8X8);
358
      xd->eobs[i] = c;
359
360
361
362
      eobtotal += c;
    }
  }

John Koleszar's avatar
John Koleszar committed
363
  return eobtotal;
364
365
}

366
367
368
369
static int decode_coefs_4x4(VP9D_COMP *dx, MACROBLOCKD *xd,
                            BOOL_DECODER* const bc,
                            PLANE_TYPE type, int i, int seg_eob,
                            TX_TYPE tx_type, const int *scan) {
Dmitry Kovalev's avatar
Dmitry Kovalev committed
370
371
  int c = decode_coefs(dx, xd, bc, i, type, tx_type, seg_eob,
                       xd->block[i].qcoeff, scan, TX_4X4);
372
  xd->eobs[i] = c;
373
374
375
376
377
378
379
380
381
  return c;
}

static int decode_coefs_4x4_y(VP9D_COMP *dx, MACROBLOCKD *xd,
                              BOOL_DECODER* const bc,
                              PLANE_TYPE type, int i, int seg_eob) {
  const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
                          get_tx_type(xd, &xd->block[i]) : DCT_DCT;
  const int *scan;
382
383

  switch (tx_type) {
384
    case ADST_DCT:
385
      scan = vp9_row_scan_4x4;
386
      break;
387
    case DCT_ADST:
388
      scan = vp9_col_scan_4x4;
389
      break;
390
    default:
391
      scan = vp9_default_zig_zag1d_4x4;
392
393
      break;
  }
394
395

  return decode_coefs_4x4(dx, xd, bc, type, i, seg_eob, tx_type, scan);
396
397
}

398
399
400
401
402
403
404
405
406
407
408
409
410
int vp9_decode_coefs_4x4(VP9D_COMP *dx, MACROBLOCKD *xd,
                         BOOL_DECODER* const bc,
                         PLANE_TYPE type, int i) {
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
  const int seg_eob = get_eob(xd, segment_id, 16);

  return decode_coefs_4x4_y(dx, xd, bc, type, i, seg_eob);
}

static int decode_mb_tokens_4x4_uv(VP9D_COMP* const dx,
                                   MACROBLOCKD* const xd,
                                   BOOL_DECODER* const bc,
                                   int seg_eob) {
411
412
  int eobtotal = 0, i;

413
414
415
  // chroma blocks
  for (i = 16; i < 24; i++) {
    eobtotal += decode_coefs_4x4(dx, xd, bc, PLANE_TYPE_UV, i, seg_eob,
416
                                 DCT_DCT, vp9_default_zig_zag1d_4x4);
417
  }
418
419
420
421

  return eobtotal;
}

422
423
424
425
426
427
428
429
430
int vp9_decode_mb_tokens_4x4_uv(VP9D_COMP* const dx,
                                MACROBLOCKD* const xd,
                                BOOL_DECODER* const bc) {
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
  const int seg_eob = get_eob(xd, segment_id, 16);

  return decode_mb_tokens_4x4_uv(dx, xd, bc, seg_eob);
}

431
432
433
static int vp9_decode_mb_tokens_4x4(VP9D_COMP* const dx,
                                    MACROBLOCKD* const xd,
                                    BOOL_DECODER* const bc) {
434
  int i, eobtotal = 0;
435
436
  const int segment_id = xd->mode_info_context->mbmi.segment_id;
  const int seg_eob = get_eob(xd, segment_id, 16);
John Koleszar's avatar
John Koleszar committed
437

438
  // luma blocks
439
  for (i = 0; i < 16; ++i) {
440
441
    eobtotal += decode_coefs_4x4_y(dx, xd, bc,
                                   PLANE_TYPE_Y_WITH_DC, i, seg_eob);
John Koleszar's avatar
John Koleszar committed
442
  }
443

444
445
446
447
  // chroma blocks
  eobtotal += decode_mb_tokens_4x4_uv(dx, xd, bc, seg_eob);

  return eobtotal;
John Koleszar's avatar
John Koleszar committed
448
}
449
450
451
452
453

int vp9_decode_mb_tokens(VP9D_COMP* const dx,
                         MACROBLOCKD* const xd,
                         BOOL_DECODER* const bc) {
  const TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
Dmitry Kovalev's avatar
Dmitry Kovalev committed
454
455
456
457
458
459
460
461
  switch (tx_size) {
    case TX_16X16:
      return vp9_decode_mb_tokens_16x16(dx, xd, bc);
    case TX_8X8:
      return vp9_decode_mb_tokens_8x8(dx, xd, bc);
    default:
      assert(tx_size == TX_4X4);
      return vp9_decode_mb_tokens_4x4(dx, xd, bc);
462
463
  }
}