1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  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.
9 */
10
11#include "vpx_mem/vpx_mem.h"
12
13#include "vp9/common/vp9_alloccommon.h"
14#include "vp9/common/vp9_onyxc_int.h"
15#include "vp9/common/vp9_seg_common.h"
16
17const vp9_prob vp9_kf_y_mode_prob[INTRA_MODES][INTRA_MODES][INTRA_MODES - 1] = {
18  {  // above = dc
19    { 137,  30,  42, 148, 151, 207,  70,  52,  91 },  // left = dc
20    {  92,  45, 102, 136, 116, 180,  74,  90, 100 },  // left = v
21    {  73,  32,  19, 187, 222, 215,  46,  34, 100 },  // left = h
22    {  91,  30,  32, 116, 121, 186,  93,  86,  94 },  // left = d45
23    {  72,  35,  36, 149,  68, 206,  68,  63, 105 },  // left = d135
24    {  73,  31,  28, 138,  57, 124,  55, 122, 151 },  // left = d117
25    {  67,  23,  21, 140, 126, 197,  40,  37, 171 },  // left = d153
26    {  86,  27,  28, 128, 154, 212,  45,  43,  53 },  // left = d207
27    {  74,  32,  27, 107,  86, 160,  63, 134, 102 },  // left = d63
28    {  59,  67,  44, 140, 161, 202,  78,  67, 119 }   // left = tm
29  }, {  // above = v
30    {  63,  36, 126, 146, 123, 158,  60,  90,  96 },  // left = dc
31    {  43,  46, 168, 134, 107, 128,  69, 142,  92 },  // left = v
32    {  44,  29,  68, 159, 201, 177,  50,  57,  77 },  // left = h
33    {  58,  38,  76, 114,  97, 172,  78, 133,  92 },  // left = d45
34    {  46,  41,  76, 140,  63, 184,  69, 112,  57 },  // left = d135
35    {  38,  32,  85, 140,  46, 112,  54, 151, 133 },  // left = d117
36    {  39,  27,  61, 131, 110, 175,  44,  75, 136 },  // left = d153
37    {  52,  30,  74, 113, 130, 175,  51,  64,  58 },  // left = d207
38    {  47,  35,  80, 100,  74, 143,  64, 163,  74 },  // left = d63
39    {  36,  61, 116, 114, 128, 162,  80, 125,  82 }   // left = tm
40  }, {  // above = h
41    {  82,  26,  26, 171, 208, 204,  44,  32, 105 },  // left = dc
42    {  55,  44,  68, 166, 179, 192,  57,  57, 108 },  // left = v
43    {  42,  26,  11, 199, 241, 228,  23,  15,  85 },  // left = h
44    {  68,  42,  19, 131, 160, 199,  55,  52,  83 },  // left = d45
45    {  58,  50,  25, 139, 115, 232,  39,  52, 118 },  // left = d135
46    {  50,  35,  33, 153, 104, 162,  64,  59, 131 },  // left = d117
47    {  44,  24,  16, 150, 177, 202,  33,  19, 156 },  // left = d153
48    {  55,  27,  12, 153, 203, 218,  26,  27,  49 },  // left = d207
49    {  53,  49,  21, 110, 116, 168,  59,  80,  76 },  // left = d63
50    {  38,  72,  19, 168, 203, 212,  50,  50, 107 }   // left = tm
51  }, {  // above = d45
52    { 103,  26,  36, 129, 132, 201,  83,  80,  93 },  // left = dc
53    {  59,  38,  83, 112, 103, 162,  98, 136,  90 },  // left = v
54    {  62,  30,  23, 158, 200, 207,  59,  57,  50 },  // left = h
55    {  67,  30,  29,  84,  86, 191, 102,  91,  59 },  // left = d45
56    {  60,  32,  33, 112,  71, 220,  64,  89, 104 },  // left = d135
57    {  53,  26,  34, 130,  56, 149,  84, 120, 103 },  // left = d117
58    {  53,  21,  23, 133, 109, 210,  56,  77, 172 },  // left = d153
59    {  77,  19,  29, 112, 142, 228,  55,  66,  36 },  // left = d207
60    {  61,  29,  29,  93,  97, 165,  83, 175, 162 },  // left = d63
61    {  47,  47,  43, 114, 137, 181, 100,  99,  95 }   // left = tm
62  }, {  // above = d135
63    {  69,  23,  29, 128,  83, 199,  46,  44, 101 },  // left = dc
64    {  53,  40,  55, 139,  69, 183,  61,  80, 110 },  // left = v
65    {  40,  29,  19, 161, 180, 207,  43,  24,  91 },  // left = h
66    {  60,  34,  19, 105,  61, 198,  53,  64,  89 },  // left = d45
67    {  52,  31,  22, 158,  40, 209,  58,  62,  89 },  // left = d135
68    {  44,  31,  29, 147,  46, 158,  56, 102, 198 },  // left = d117
69    {  35,  19,  12, 135,  87, 209,  41,  45, 167 },  // left = d153
70    {  55,  25,  21, 118,  95, 215,  38,  39,  66 },  // left = d207
71    {  51,  38,  25, 113,  58, 164,  70,  93,  97 },  // left = d63
72    {  47,  54,  34, 146, 108, 203,  72, 103, 151 }   // left = tm
73  }, {  // above = d117
74    {  64,  19,  37, 156,  66, 138,  49,  95, 133 },  // left = dc
75    {  46,  27,  80, 150,  55, 124,  55, 121, 135 },  // left = v
76    {  36,  23,  27, 165, 149, 166,  54,  64, 118 },  // left = h
77    {  53,  21,  36, 131,  63, 163,  60, 109,  81 },  // left = d45
78    {  40,  26,  35, 154,  40, 185,  51,  97, 123 },  // left = d135
79    {  35,  19,  34, 179,  19,  97,  48, 129, 124 },  // left = d117
80    {  36,  20,  26, 136,  62, 164,  33,  77, 154 },  // left = d153
81    {  45,  18,  32, 130,  90, 157,  40,  79,  91 },  // left = d207
82    {  45,  26,  28, 129,  45, 129,  49, 147, 123 },  // left = d63
83    {  38,  44,  51, 136,  74, 162,  57,  97, 121 }   // left = tm
84  }, {  // above = d153
85    {  75,  17,  22, 136, 138, 185,  32,  34, 166 },  // left = dc
86    {  56,  39,  58, 133, 117, 173,  48,  53, 187 },  // left = v
87    {  35,  21,  12, 161, 212, 207,  20,  23, 145 },  // left = h
88    {  56,  29,  19, 117, 109, 181,  55,  68, 112 },  // left = d45
89    {  47,  29,  17, 153,  64, 220,  59,  51, 114 },  // left = d135
90    {  46,  16,  24, 136,  76, 147,  41,  64, 172 },  // left = d117
91    {  34,  17,  11, 108, 152, 187,  13,  15, 209 },  // left = d153
92    {  51,  24,  14, 115, 133, 209,  32,  26, 104 },  // left = d207
93    {  55,  30,  18, 122,  79, 179,  44,  88, 116 },  // left = d63
94    {  37,  49,  25, 129, 168, 164,  41,  54, 148 }   // left = tm
95  }, {  // above = d207
96    {  82,  22,  32, 127, 143, 213,  39,  41,  70 },  // left = dc
97    {  62,  44,  61, 123, 105, 189,  48,  57,  64 },  // left = v
98    {  47,  25,  17, 175, 222, 220,  24,  30,  86 },  // left = h
99    {  68,  36,  17, 106, 102, 206,  59,  74,  74 },  // left = d45
100    {  57,  39,  23, 151,  68, 216,  55,  63,  58 },  // left = d135
101    {  49,  30,  35, 141,  70, 168,  82,  40, 115 },  // left = d117
102    {  51,  25,  15, 136, 129, 202,  38,  35, 139 },  // left = d153
103    {  68,  26,  16, 111, 141, 215,  29,  28,  28 },  // left = d207
104    {  59,  39,  19, 114,  75, 180,  77, 104,  42 },  // left = d63
105    {  40,  61,  26, 126, 152, 206,  61,  59,  93 }   // left = tm
106  }, {  // above = d63
107    {  78,  23,  39, 111, 117, 170,  74, 124,  94 },  // left = dc
108    {  48,  34,  86, 101,  92, 146,  78, 179, 134 },  // left = v
109    {  47,  22,  24, 138, 187, 178,  68,  69,  59 },  // left = h
110    {  56,  25,  33, 105, 112, 187,  95, 177, 129 },  // left = d45
111    {  48,  31,  27, 114,  63, 183,  82, 116,  56 },  // left = d135
112    {  43,  28,  37, 121,  63, 123,  61, 192, 169 },  // left = d117
113    {  42,  17,  24, 109,  97, 177,  56,  76, 122 },  // left = d153
114    {  58,  18,  28, 105, 139, 182,  70,  92,  63 },  // left = d207
115    {  46,  23,  32,  74,  86, 150,  67, 183,  88 },  // left = d63
116    {  36,  38,  48,  92, 122, 165,  88, 137,  91 }   // left = tm
117  }, {  // above = tm
118    {  65,  70,  60, 155, 159, 199,  61,  60,  81 },  // left = dc
119    {  44,  78, 115, 132, 119, 173,  71, 112,  93 },  // left = v
120    {  39,  38,  21, 184, 227, 206,  42,  32,  64 },  // left = h
121    {  58,  47,  36, 124, 137, 193,  80,  82,  78 },  // left = d45
122    {  49,  50,  35, 144,  95, 205,  63,  78,  59 },  // left = d135
123    {  41,  53,  52, 148,  71, 142,  65, 128,  51 },  // left = d117
124    {  40,  36,  28, 143, 143, 202,  40,  55, 137 },  // left = d153
125    {  52,  34,  29, 129, 183, 227,  42,  35,  43 },  // left = d207
126    {  42,  44,  44, 104, 105, 164,  64, 130,  80 },  // left = d63
127    {  43,  81,  53, 140, 169, 204,  68,  84,  72 }   // left = tm
128  }
129};
130
131const vp9_prob vp9_kf_uv_mode_prob[INTRA_MODES][INTRA_MODES - 1] = {
132  { 144,  11,  54, 157, 195, 130,  46,  58, 108 },  // y = dc
133  { 118,  15, 123, 148, 131, 101,  44,  93, 131 },  // y = v
134  { 113,  12,  23, 188, 226, 142,  26,  32, 125 },  // y = h
135  { 120,  11,  50, 123, 163, 135,  64,  77, 103 },  // y = d45
136  { 113,   9,  36, 155, 111, 157,  32,  44, 161 },  // y = d135
137  { 116,   9,  55, 176,  76,  96,  37,  61, 149 },  // y = d117
138  { 115,   9,  28, 141, 161, 167,  21,  25, 193 },  // y = d153
139  { 120,  12,  32, 145, 195, 142,  32,  38,  86 },  // y = d207
140  { 116,  12,  64, 120, 140, 125,  49, 115, 121 },  // y = d63
141  { 102,  19,  66, 162, 182, 122,  35,  59, 128 }   // y = tm
142};
143
144static const vp9_prob default_if_y_probs[BLOCK_SIZE_GROUPS][INTRA_MODES - 1] = {
145  {  65,  32,  18, 144, 162, 194,  41,  51,  98 },  // block_size < 8x8
146  { 132,  68,  18, 165, 217, 196,  45,  40,  78 },  // block_size < 16x16
147  { 173,  80,  19, 176, 240, 193,  64,  35,  46 },  // block_size < 32x32
148  { 221, 135,  38, 194, 248, 121,  96,  85,  29 }   // block_size >= 32x32
149};
150
151static const vp9_prob default_if_uv_probs[INTRA_MODES][INTRA_MODES - 1] = {
152  { 120,   7,  76, 176, 208, 126,  28,  54, 103 },  // y = dc
153  {  48,  12, 154, 155, 139,  90,  34, 117, 119 },  // y = v
154  {  67,   6,  25, 204, 243, 158,  13,  21,  96 },  // y = h
155  {  97,   5,  44, 131, 176, 139,  48,  68,  97 },  // y = d45
156  {  83,   5,  42, 156, 111, 152,  26,  49, 152 },  // y = d135
157  {  80,   5,  58, 178,  74,  83,  33,  62, 145 },  // y = d117
158  {  86,   5,  32, 154, 192, 168,  14,  22, 163 },  // y = d153
159  {  85,   5,  32, 156, 216, 148,  19,  29,  73 },  // y = d207
160  {  77,   7,  64, 116, 132, 122,  37, 126, 120 },  // y = d63
161  { 101,  21, 107, 181, 192, 103,  19,  67, 125 }   // y = tm
162};
163
164const vp9_prob vp9_kf_partition_probs[PARTITION_CONTEXTS]
165                                     [PARTITION_TYPES - 1] = {
166  // 8x8 -> 4x4
167  { 158,  97,  94 },  // a/l both not split
168  {  93,  24,  99 },  // a split, l not split
169  {  85, 119,  44 },  // l split, a not split
170  {  62,  59,  67 },  // a/l both split
171  // 16x16 -> 8x8
172  { 149,  53,  53 },  // a/l both not split
173  {  94,  20,  48 },  // a split, l not split
174  {  83,  53,  24 },  // l split, a not split
175  {  52,  18,  18 },  // a/l both split
176  // 32x32 -> 16x16
177  { 150,  40,  39 },  // a/l both not split
178  {  78,  12,  26 },  // a split, l not split
179  {  67,  33,  11 },  // l split, a not split
180  {  24,   7,   5 },  // a/l both split
181  // 64x64 -> 32x32
182  { 174,  35,  49 },  // a/l both not split
183  {  68,  11,  27 },  // a split, l not split
184  {  57,  15,   9 },  // l split, a not split
185  {  12,   3,   3 },  // a/l both split
186};
187
188static const vp9_prob default_partition_probs[PARTITION_CONTEXTS]
189                                             [PARTITION_TYPES - 1] = {
190  // 8x8 -> 4x4
191  { 199, 122, 141 },  // a/l both not split
192  { 147,  63, 159 },  // a split, l not split
193  { 148, 133, 118 },  // l split, a not split
194  { 121, 104, 114 },  // a/l both split
195  // 16x16 -> 8x8
196  { 174,  73,  87 },  // a/l both not split
197  {  92,  41,  83 },  // a split, l not split
198  {  82,  99,  50 },  // l split, a not split
199  {  53,  39,  39 },  // a/l both split
200  // 32x32 -> 16x16
201  { 177,  58,  59 },  // a/l both not split
202  {  68,  26,  63 },  // a split, l not split
203  {  52,  79,  25 },  // l split, a not split
204  {  17,  14,  12 },  // a/l both split
205  // 64x64 -> 32x32
206  { 222,  34,  30 },  // a/l both not split
207  {  72,  16,  44 },  // a split, l not split
208  {  58,  32,  12 },  // l split, a not split
209  {  10,   7,   6 },  // a/l both split
210};
211
212static const vp9_prob default_inter_mode_probs[INTER_MODE_CONTEXTS]
213                                              [INTER_MODES - 1] = {
214  {2,       173,   34},  // 0 = both zero mv
215  {7,       145,   85},  // 1 = one zero mv + one a predicted mv
216  {7,       166,   63},  // 2 = two predicted mvs
217  {7,       94,    66},  // 3 = one predicted/zero and one new mv
218  {8,       64,    46},  // 4 = two new mvs
219  {17,      81,    31},  // 5 = one intra neighbour + x
220  {25,      29,    30},  // 6 = two intra neighbours
221};
222
223/* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
224const vp9_tree_index vp9_intra_mode_tree[TREE_SIZE(INTRA_MODES)] = {
225  -DC_PRED, 2,                      /* 0 = DC_NODE */
226  -TM_PRED, 4,                      /* 1 = TM_NODE */
227  -V_PRED, 6,                       /* 2 = V_NODE */
228  8, 12,                            /* 3 = COM_NODE */
229  -H_PRED, 10,                      /* 4 = H_NODE */
230  -D135_PRED, -D117_PRED,           /* 5 = D135_NODE */
231  -D45_PRED, 14,                    /* 6 = D45_NODE */
232  -D63_PRED, 16,                    /* 7 = D63_NODE */
233  -D153_PRED, -D207_PRED             /* 8 = D153_NODE */
234};
235struct vp9_token vp9_intra_mode_encodings[INTRA_MODES];
236
237const vp9_tree_index vp9_inter_mode_tree[TREE_SIZE(INTER_MODES)] = {
238  -INTER_OFFSET(ZEROMV), 2,
239  -INTER_OFFSET(NEARESTMV), 4,
240  -INTER_OFFSET(NEARMV), -INTER_OFFSET(NEWMV)
241};
242struct vp9_token vp9_inter_mode_encodings[INTER_MODES];
243
244const vp9_tree_index vp9_partition_tree[TREE_SIZE(PARTITION_TYPES)] = {
245  -PARTITION_NONE, 2,
246  -PARTITION_HORZ, 4,
247  -PARTITION_VERT, -PARTITION_SPLIT
248};
249struct vp9_token vp9_partition_encodings[PARTITION_TYPES];
250
251static const vp9_prob default_intra_inter_p[INTRA_INTER_CONTEXTS] = {
252  9, 102, 187, 225
253};
254
255static const vp9_prob default_comp_inter_p[COMP_INTER_CONTEXTS] = {
256  239, 183, 119,  96,  41
257};
258
259static const vp9_prob default_comp_ref_p[REF_CONTEXTS] = {
260  50, 126, 123, 221, 226
261};
262
263static const vp9_prob default_single_ref_p[REF_CONTEXTS][2] = {
264  {  33,  16 },
265  {  77,  74 },
266  { 142, 142 },
267  { 172, 170 },
268  { 238, 247 }
269};
270
271static const struct tx_probs default_tx_probs = {
272  { { 3, 136, 37 },
273    { 5, 52,  13 } },
274
275  { { 20, 152 },
276    { 15, 101 } },
277
278  { { 100 },
279    { 66  } }
280};
281
282void tx_counts_to_branch_counts_32x32(const unsigned int *tx_count_32x32p,
283                                      unsigned int (*ct_32x32p)[2]) {
284  ct_32x32p[0][0] = tx_count_32x32p[TX_4X4];
285  ct_32x32p[0][1] = tx_count_32x32p[TX_8X8] +
286                    tx_count_32x32p[TX_16X16] +
287                    tx_count_32x32p[TX_32X32];
288  ct_32x32p[1][0] = tx_count_32x32p[TX_8X8];
289  ct_32x32p[1][1] = tx_count_32x32p[TX_16X16] +
290                    tx_count_32x32p[TX_32X32];
291  ct_32x32p[2][0] = tx_count_32x32p[TX_16X16];
292  ct_32x32p[2][1] = tx_count_32x32p[TX_32X32];
293}
294
295void tx_counts_to_branch_counts_16x16(const unsigned int *tx_count_16x16p,
296                                      unsigned int (*ct_16x16p)[2]) {
297  ct_16x16p[0][0] = tx_count_16x16p[TX_4X4];
298  ct_16x16p[0][1] = tx_count_16x16p[TX_8X8] + tx_count_16x16p[TX_16X16];
299  ct_16x16p[1][0] = tx_count_16x16p[TX_8X8];
300  ct_16x16p[1][1] = tx_count_16x16p[TX_16X16];
301}
302
303void tx_counts_to_branch_counts_8x8(const unsigned int *tx_count_8x8p,
304                                    unsigned int (*ct_8x8p)[2]) {
305  ct_8x8p[0][0] = tx_count_8x8p[TX_4X4];
306  ct_8x8p[0][1] = tx_count_8x8p[TX_8X8];
307}
308
309static const vp9_prob default_mbskip_probs[MBSKIP_CONTEXTS] = {
310  192, 128, 64
311};
312
313static const vp9_prob default_switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]
314                                                    [SWITCHABLE_FILTERS - 1] = {
315  { 235, 162, },
316  { 36, 255, },
317  { 34, 3, },
318  { 149, 144, },
319};
320
321void vp9_init_mbmode_probs(VP9_COMMON *cm) {
322  vp9_copy(cm->fc.uv_mode_prob, default_if_uv_probs);
323  vp9_copy(cm->fc.y_mode_prob, default_if_y_probs);
324  vp9_copy(cm->fc.switchable_interp_prob, default_switchable_interp_prob);
325  vp9_copy(cm->fc.partition_prob, default_partition_probs);
326  vp9_copy(cm->fc.intra_inter_prob, default_intra_inter_p);
327  vp9_copy(cm->fc.comp_inter_prob, default_comp_inter_p);
328  vp9_copy(cm->fc.comp_ref_prob, default_comp_ref_p);
329  vp9_copy(cm->fc.single_ref_prob, default_single_ref_p);
330  cm->fc.tx_probs = default_tx_probs;
331  vp9_copy(cm->fc.mbskip_probs, default_mbskip_probs);
332}
333
334const vp9_tree_index vp9_switchable_interp_tree
335                         [TREE_SIZE(SWITCHABLE_FILTERS)] = {
336  -EIGHTTAP, 2,
337  -EIGHTTAP_SMOOTH, -EIGHTTAP_SHARP
338};
339struct vp9_token vp9_switchable_interp_encodings[SWITCHABLE_FILTERS];
340
341void vp9_entropy_mode_init() {
342  vp9_tokens_from_tree(vp9_intra_mode_encodings, vp9_intra_mode_tree);
343  vp9_tokens_from_tree(vp9_switchable_interp_encodings,
344                       vp9_switchable_interp_tree);
345  vp9_tokens_from_tree(vp9_partition_encodings, vp9_partition_tree);
346  vp9_tokens_from_tree(vp9_inter_mode_encodings, vp9_inter_mode_tree);
347}
348
349#define COUNT_SAT 20
350#define MAX_UPDATE_FACTOR 128
351
352static int adapt_prob(vp9_prob pre_prob, const unsigned int ct[2]) {
353  return merge_probs(pre_prob, ct, COUNT_SAT, MAX_UPDATE_FACTOR);
354}
355
356static void adapt_probs(const vp9_tree_index *tree,
357                        const vp9_prob *pre_probs, const unsigned int *counts,
358                        vp9_prob *probs) {
359  tree_merge_probs(tree, pre_probs, counts, COUNT_SAT, MAX_UPDATE_FACTOR,
360                   probs);
361}
362
363void vp9_adapt_mode_probs(VP9_COMMON *cm) {
364  int i, j;
365  FRAME_CONTEXT *fc = &cm->fc;
366  const FRAME_CONTEXT *pre_fc = &cm->frame_contexts[cm->frame_context_idx];
367  const FRAME_COUNTS *counts = &cm->counts;
368
369  for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
370    fc->intra_inter_prob[i] = adapt_prob(pre_fc->intra_inter_prob[i],
371                                         counts->intra_inter[i]);
372  for (i = 0; i < COMP_INTER_CONTEXTS; i++)
373    fc->comp_inter_prob[i] = adapt_prob(pre_fc->comp_inter_prob[i],
374                                        counts->comp_inter[i]);
375  for (i = 0; i < REF_CONTEXTS; i++)
376    fc->comp_ref_prob[i] = adapt_prob(pre_fc->comp_ref_prob[i],
377                                      counts->comp_ref[i]);
378  for (i = 0; i < REF_CONTEXTS; i++)
379    for (j = 0; j < 2; j++)
380      fc->single_ref_prob[i][j] = adapt_prob(pre_fc->single_ref_prob[i][j],
381                                             counts->single_ref[i][j]);
382
383  for (i = 0; i < INTER_MODE_CONTEXTS; i++)
384    adapt_probs(vp9_inter_mode_tree, pre_fc->inter_mode_probs[i],
385                counts->inter_mode[i], fc->inter_mode_probs[i]);
386
387  for (i = 0; i < BLOCK_SIZE_GROUPS; i++)
388    adapt_probs(vp9_intra_mode_tree, pre_fc->y_mode_prob[i],
389                counts->y_mode[i], fc->y_mode_prob[i]);
390
391  for (i = 0; i < INTRA_MODES; ++i)
392    adapt_probs(vp9_intra_mode_tree, pre_fc->uv_mode_prob[i],
393                counts->uv_mode[i], fc->uv_mode_prob[i]);
394
395  for (i = 0; i < PARTITION_CONTEXTS; i++)
396    adapt_probs(vp9_partition_tree, pre_fc->partition_prob[i],
397                counts->partition[i], fc->partition_prob[i]);
398
399  if (cm->mcomp_filter_type == SWITCHABLE) {
400    for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
401      adapt_probs(vp9_switchable_interp_tree, pre_fc->switchable_interp_prob[i],
402                  counts->switchable_interp[i], fc->switchable_interp_prob[i]);
403  }
404
405  if (cm->tx_mode == TX_MODE_SELECT) {
406    int j;
407    unsigned int branch_ct_8x8p[TX_SIZES - 3][2];
408    unsigned int branch_ct_16x16p[TX_SIZES - 2][2];
409    unsigned int branch_ct_32x32p[TX_SIZES - 1][2];
410
411    for (i = 0; i < TX_SIZE_CONTEXTS; ++i) {
412      tx_counts_to_branch_counts_8x8(counts->tx.p8x8[i], branch_ct_8x8p);
413      for (j = 0; j < TX_SIZES - 3; ++j)
414        fc->tx_probs.p8x8[i][j] = adapt_prob(pre_fc->tx_probs.p8x8[i][j],
415                                             branch_ct_8x8p[j]);
416
417      tx_counts_to_branch_counts_16x16(counts->tx.p16x16[i], branch_ct_16x16p);
418      for (j = 0; j < TX_SIZES - 2; ++j)
419        fc->tx_probs.p16x16[i][j] = adapt_prob(pre_fc->tx_probs.p16x16[i][j],
420                                               branch_ct_16x16p[j]);
421
422      tx_counts_to_branch_counts_32x32(counts->tx.p32x32[i], branch_ct_32x32p);
423      for (j = 0; j < TX_SIZES - 1; ++j)
424        fc->tx_probs.p32x32[i][j] = adapt_prob(pre_fc->tx_probs.p32x32[i][j],
425                                               branch_ct_32x32p[j]);
426    }
427  }
428
429  for (i = 0; i < MBSKIP_CONTEXTS; ++i)
430    fc->mbskip_probs[i] = adapt_prob(pre_fc->mbskip_probs[i],
431                                     counts->mbskip[i]);
432}
433
434static void set_default_lf_deltas(struct loopfilter *lf) {
435  lf->mode_ref_delta_enabled = 1;
436  lf->mode_ref_delta_update = 1;
437
438  lf->ref_deltas[INTRA_FRAME] = 1;
439  lf->ref_deltas[LAST_FRAME] = 0;
440  lf->ref_deltas[GOLDEN_FRAME] = -1;
441  lf->ref_deltas[ALTREF_FRAME] = -1;
442
443  lf->mode_deltas[0] = 0;
444  lf->mode_deltas[1] = 0;
445}
446
447void vp9_setup_past_independence(VP9_COMMON *cm) {
448  // Reset the segment feature data to the default stats:
449  // Features disabled, 0, with delta coding (Default state).
450  struct loopfilter *const lf = &cm->lf;
451
452  int i;
453  vp9_clearall_segfeatures(&cm->seg);
454  cm->seg.abs_delta = SEGMENT_DELTADATA;
455  if (cm->last_frame_seg_map)
456    vpx_memset(cm->last_frame_seg_map, 0, (cm->mi_rows * cm->mi_cols));
457
458  // Reset the mode ref deltas for loop filter
459  vp9_zero(lf->last_ref_deltas);
460  vp9_zero(lf->last_mode_deltas);
461  set_default_lf_deltas(lf);
462
463  // To force update of the sharpness
464  lf->last_sharpness_level = -1;
465
466  vp9_default_coef_probs(cm);
467  vp9_init_mbmode_probs(cm);
468  vp9_init_mv_probs(cm);
469  vp9_copy(cm->fc.inter_mode_probs, default_inter_mode_probs);
470
471  if (cm->frame_type == KEY_FRAME ||
472      cm->error_resilient_mode || cm->reset_frame_context == 3) {
473    // Reset all frame contexts.
474    for (i = 0; i < NUM_FRAME_CONTEXTS; ++i)
475      cm->frame_contexts[i] = cm->fc;
476  } else if (cm->reset_frame_context == 2) {
477    // Reset only the frame context specified in the frame header.
478    cm->frame_contexts[cm->frame_context_idx] = cm->fc;
479  }
480
481  vpx_memset(cm->prev_mip, 0,
482             cm->mode_info_stride * (cm->mi_rows + 1) * sizeof(MODE_INFO));
483  vpx_memset(cm->mip, 0,
484             cm->mode_info_stride * (cm->mi_rows + 1) * sizeof(MODE_INFO));
485
486  vp9_update_mode_info_border(cm, cm->mip);
487  vp9_update_mode_info_border(cm, cm->prev_mip);
488
489  vp9_zero(cm->ref_frame_sign_bias);
490
491  cm->frame_context_idx = 0;
492}
493