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1 // Copyright 2011 Google Inc. All Rights Reserved.
2 //
3 // Use of this source code is governed by a BSD-style license
4 // that can be found in the COPYING file in the root of the source
5 // tree. An additional intellectual property rights grant can be found
6 // in the file PATENTS. All contributing project authors may
7 // be found in the AUTHORS file in the root of the source tree.
8 // -----------------------------------------------------------------------------
9 //
10 // Coding of token probabilities, intra modes and segments.
11 //
12 // Author: Skal (pascal.massimino@gmail.com)
13 
14 #include "src/enc/vp8i_enc.h"
15 
16 //------------------------------------------------------------------------------
17 // Default probabilities
18 
19 // Paragraph 13.5
20 const uint8_t
21   VP8CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
22   { { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
23       { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
24       { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
25     },
26     { { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
27       { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
28       { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 }
29     },
30     { { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
31       { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
32       { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
33     },
34     { { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
35       { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
36       { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
37     },
38     { { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
39       { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
40       { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 }
41     },
42     { { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
43       { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
44       { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 }
45     },
46     { { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
47       { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
48       { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 }
49     },
50     { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
51       { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
52       { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
53     }
54   },
55   { { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
56       { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
57       { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 }
58     },
59     { { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
60       { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
61       { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 }
62     },
63     { { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
64       { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
65       { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 }
66     },
67     { { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
68       { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
69       { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 }
70     },
71     { { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
72       { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
73       { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 }
74     },
75     { { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
76       { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
77       { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 }
78     },
79     { { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
80       { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
81       { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 }
82     },
83     { { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
84       { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
85       { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 }
86     }
87   },
88   { { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
89       { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
90       { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 }
91     },
92     { { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
93       { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
94       { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 }
95     },
96     { { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
97       { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
98       { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 }
99     },
100     { { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
101       { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
102       { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 }
103     },
104     { { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
105       { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
106       { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
107     },
108     { { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
109       { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
110       { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
111     },
112     { { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
113       { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
114       { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
115     },
116     { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
117       { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
118       { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }
119     }
120   },
121   { { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
122       { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
123       { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 }
124     },
125     { { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
126       { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
127       { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 }
128     },
129     { { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
130       { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
131       { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 }
132     },
133     { { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
134       { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
135       { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 }
136     },
137     { { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
138       { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
139       { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 }
140     },
141     { { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
142       { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
143       { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 }
144     },
145     { { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
146       { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
147       { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 }
148     },
149     { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
150       { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
151       { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }
152     }
153   }
154 };
155 
VP8DefaultProbas(VP8Encoder * const enc)156 void VP8DefaultProbas(VP8Encoder* const enc) {
157   VP8EncProba* const probas = &enc->proba_;
158   probas->use_skip_proba_ = 0;
159   memset(probas->segments_, 255u, sizeof(probas->segments_));
160   memcpy(probas->coeffs_, VP8CoeffsProba0, sizeof(VP8CoeffsProba0));
161   // Note: we could hard-code the level_costs_ corresponding to VP8CoeffsProba0,
162   // but that's ~11k of static data. Better call VP8CalculateLevelCosts() later.
163   probas->dirty_ = 1;
164 }
165 
166 // Paragraph 11.5.  900bytes.
167 static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
168   { { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
169     { 152, 179, 64, 126, 170, 118, 46, 70, 95 },
170     { 175, 69, 143, 80, 85, 82, 72, 155, 103 },
171     { 56, 58, 10, 171, 218, 189, 17, 13, 152 },
172     { 114, 26, 17, 163, 44, 195, 21, 10, 173 },
173     { 121, 24, 80, 195, 26, 62, 44, 64, 85 },
174     { 144, 71, 10, 38, 171, 213, 144, 34, 26 },
175     { 170, 46, 55, 19, 136, 160, 33, 206, 71 },
176     { 63, 20, 8, 114, 114, 208, 12, 9, 226 },
177     { 81, 40, 11, 96, 182, 84, 29, 16, 36 } },
178   { { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
179     { 72, 187, 100, 130, 157, 111, 32, 75, 80 },
180     { 66, 102, 167, 99, 74, 62, 40, 234, 128 },
181     { 41, 53, 9, 178, 241, 141, 26, 8, 107 },
182     { 74, 43, 26, 146, 73, 166, 49, 23, 157 },
183     { 65, 38, 105, 160, 51, 52, 31, 115, 128 },
184     { 104, 79, 12, 27, 217, 255, 87, 17, 7 },
185     { 87, 68, 71, 44, 114, 51, 15, 186, 23 },
186     { 47, 41, 14, 110, 182, 183, 21, 17, 194 },
187     { 66, 45, 25, 102, 197, 189, 23, 18, 22 } },
188   { { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
189     { 43, 97, 183, 117, 85, 38, 35, 179, 61 },
190     { 39, 53, 200, 87, 26, 21, 43, 232, 171 },
191     { 56, 34, 51, 104, 114, 102, 29, 93, 77 },
192     { 39, 28, 85, 171, 58, 165, 90, 98, 64 },
193     { 34, 22, 116, 206, 23, 34, 43, 166, 73 },
194     { 107, 54, 32, 26, 51, 1, 81, 43, 31 },
195     { 68, 25, 106, 22, 64, 171, 36, 225, 114 },
196     { 34, 19, 21, 102, 132, 188, 16, 76, 124 },
197     { 62, 18, 78, 95, 85, 57, 50, 48, 51 } },
198   { { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
199     { 60, 148, 31, 172, 219, 228, 21, 18, 111 },
200     { 112, 113, 77, 85, 179, 255, 38, 120, 114 },
201     { 40, 42, 1, 196, 245, 209, 10, 25, 109 },
202     { 88, 43, 29, 140, 166, 213, 37, 43, 154 },
203     { 61, 63, 30, 155, 67, 45, 68, 1, 209 },
204     { 100, 80, 8, 43, 154, 1, 51, 26, 71 },
205     { 142, 78, 78, 16, 255, 128, 34, 197, 171 },
206     { 41, 40, 5, 102, 211, 183, 4, 1, 221 },
207     { 51, 50, 17, 168, 209, 192, 23, 25, 82 } },
208   { { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
209     { 67, 87, 58, 169, 82, 115, 26, 59, 179 },
210     { 63, 59, 90, 180, 59, 166, 93, 73, 154 },
211     { 40, 40, 21, 116, 143, 209, 34, 39, 175 },
212     { 47, 15, 16, 183, 34, 223, 49, 45, 183 },
213     { 46, 17, 33, 183, 6, 98, 15, 32, 183 },
214     { 57, 46, 22, 24, 128, 1, 54, 17, 37 },
215     { 65, 32, 73, 115, 28, 128, 23, 128, 205 },
216     { 40, 3, 9, 115, 51, 192, 18, 6, 223 },
217     { 87, 37, 9, 115, 59, 77, 64, 21, 47 } },
218   { { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
219     { 64, 90, 70, 205, 40, 41, 23, 26, 57 },
220     { 54, 57, 112, 184, 5, 41, 38, 166, 213 },
221     { 30, 34, 26, 133, 152, 116, 10, 32, 134 },
222     { 39, 19, 53, 221, 26, 114, 32, 73, 255 },
223     { 31, 9, 65, 234, 2, 15, 1, 118, 73 },
224     { 75, 32, 12, 51, 192, 255, 160, 43, 51 },
225     { 88, 31, 35, 67, 102, 85, 55, 186, 85 },
226     { 56, 21, 23, 111, 59, 205, 45, 37, 192 },
227     { 55, 38, 70, 124, 73, 102, 1, 34, 98 } },
228   { { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
229     { 95, 84, 53, 89, 128, 100, 113, 101, 45 },
230     { 75, 79, 123, 47, 51, 128, 81, 171, 1 },
231     { 57, 17, 5, 71, 102, 57, 53, 41, 49 },
232     { 38, 33, 13, 121, 57, 73, 26, 1, 85 },
233     { 41, 10, 67, 138, 77, 110, 90, 47, 114 },
234     { 115, 21, 2, 10, 102, 255, 166, 23, 6 },
235     { 101, 29, 16, 10, 85, 128, 101, 196, 26 },
236     { 57, 18, 10, 102, 102, 213, 34, 20, 43 },
237     { 117, 20, 15, 36, 163, 128, 68, 1, 26 } },
238   { { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
239     { 69, 60, 71, 38, 73, 119, 28, 222, 37 },
240     { 68, 45, 128, 34, 1, 47, 11, 245, 171 },
241     { 62, 17, 19, 70, 146, 85, 55, 62, 70 },
242     { 37, 43, 37, 154, 100, 163, 85, 160, 1 },
243     { 63, 9, 92, 136, 28, 64, 32, 201, 85 },
244     { 75, 15, 9, 9, 64, 255, 184, 119, 16 },
245     { 86, 6, 28, 5, 64, 255, 25, 248, 1 },
246     { 56, 8, 17, 132, 137, 255, 55, 116, 128 },
247     { 58, 15, 20, 82, 135, 57, 26, 121, 40 } },
248   { { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
249     { 51, 103, 44, 131, 131, 123, 31, 6, 158 },
250     { 86, 40, 64, 135, 148, 224, 45, 183, 128 },
251     { 22, 26, 17, 131, 240, 154, 14, 1, 209 },
252     { 45, 16, 21, 91, 64, 222, 7, 1, 197 },
253     { 56, 21, 39, 155, 60, 138, 23, 102, 213 },
254     { 83, 12, 13, 54, 192, 255, 68, 47, 28 },
255     { 85, 26, 85, 85, 128, 128, 32, 146, 171 },
256     { 18, 11, 7, 63, 144, 171, 4, 4, 246 },
257     { 35, 27, 10, 146, 174, 171, 12, 26, 128 } },
258   { { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
259     { 85, 126, 47, 87, 176, 51, 41, 20, 32 },
260     { 101, 75, 128, 139, 118, 146, 116, 128, 85 },
261     { 56, 41, 15, 176, 236, 85, 37, 9, 62 },
262     { 71, 30, 17, 119, 118, 255, 17, 18, 138 },
263     { 101, 38, 60, 138, 55, 70, 43, 26, 142 },
264     { 146, 36, 19, 30, 171, 255, 97, 27, 20 },
265     { 138, 45, 61, 62, 219, 1, 81, 188, 64 },
266     { 32, 41, 20, 117, 151, 142, 20, 21, 163 },
267     { 112, 19, 12, 61, 195, 128, 48, 4, 24 } }
268 };
269 
PutI4Mode(VP8BitWriter * const bw,int mode,const uint8_t * const prob)270 static int PutI4Mode(VP8BitWriter* const bw, int mode,
271                      const uint8_t* const prob) {
272   if (VP8PutBit(bw, mode != B_DC_PRED, prob[0])) {
273     if (VP8PutBit(bw, mode != B_TM_PRED, prob[1])) {
274       if (VP8PutBit(bw, mode != B_VE_PRED, prob[2])) {
275         if (!VP8PutBit(bw, mode >= B_LD_PRED, prob[3])) {
276           if (VP8PutBit(bw, mode != B_HE_PRED, prob[4])) {
277             VP8PutBit(bw, mode != B_RD_PRED, prob[5]);
278           }
279         } else {
280           if (VP8PutBit(bw, mode != B_LD_PRED, prob[6])) {
281             if (VP8PutBit(bw, mode != B_VL_PRED, prob[7])) {
282               VP8PutBit(bw, mode != B_HD_PRED, prob[8]);
283             }
284           }
285         }
286       }
287     }
288   }
289   return mode;
290 }
291 
PutI16Mode(VP8BitWriter * const bw,int mode)292 static void PutI16Mode(VP8BitWriter* const bw, int mode) {
293   if (VP8PutBit(bw, (mode == TM_PRED || mode == H_PRED), 156)) {
294     VP8PutBit(bw, mode == TM_PRED, 128);    // TM or HE
295   } else {
296     VP8PutBit(bw, mode == V_PRED, 163);     // VE or DC
297   }
298 }
299 
PutUVMode(VP8BitWriter * const bw,int uv_mode)300 static void PutUVMode(VP8BitWriter* const bw, int uv_mode) {
301   if (VP8PutBit(bw, uv_mode != DC_PRED, 142)) {
302     if (VP8PutBit(bw, uv_mode != V_PRED, 114)) {
303       VP8PutBit(bw, uv_mode != H_PRED, 183);    // else: TM_PRED
304     }
305   }
306 }
307 
PutSegment(VP8BitWriter * const bw,int s,const uint8_t * p)308 static void PutSegment(VP8BitWriter* const bw, int s, const uint8_t* p) {
309   if (VP8PutBit(bw, s >= 2, p[0])) p += 1;
310   VP8PutBit(bw, s & 1, p[1]);
311 }
312 
VP8CodeIntraModes(VP8Encoder * const enc)313 void VP8CodeIntraModes(VP8Encoder* const enc) {
314   VP8BitWriter* const bw = &enc->bw_;
315   VP8EncIterator it;
316   VP8IteratorInit(enc, &it);
317   do {
318     const VP8MBInfo* const mb = it.mb_;
319     const uint8_t* preds = it.preds_;
320     if (enc->segment_hdr_.update_map_) {
321       PutSegment(bw, mb->segment_, enc->proba_.segments_);
322     }
323     if (enc->proba_.use_skip_proba_) {
324       VP8PutBit(bw, mb->skip_, enc->proba_.skip_proba_);
325     }
326     if (VP8PutBit(bw, (mb->type_ != 0), 145)) {  // i16x16
327       PutI16Mode(bw, preds[0]);
328     } else {
329       const int preds_w = enc->preds_w_;
330       const uint8_t* top_pred = preds - preds_w;
331       int x, y;
332       for (y = 0; y < 4; ++y) {
333         int left = preds[-1];
334         for (x = 0; x < 4; ++x) {
335           const uint8_t* const probas = kBModesProba[top_pred[x]][left];
336           left = PutI4Mode(bw, preds[x], probas);
337         }
338         top_pred = preds;
339         preds += preds_w;
340       }
341     }
342     PutUVMode(bw, mb->uv_mode_);
343   } while (VP8IteratorNext(&it));
344 }
345 
346 //------------------------------------------------------------------------------
347 // Paragraph 13
348 
349 const uint8_t
350     VP8CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
351   { { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
352       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
353       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
354     },
355     { { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
356       { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
357       { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }
358     },
359     { { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
360       { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
361       { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
362     },
363     { { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
364       { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
365       { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
366     },
367     { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
368       { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
369       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
370     },
371     { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
372       { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
373       { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
374     },
375     { { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
376       { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
377       { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
378     },
379     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
380       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
381       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
382     }
383   },
384   { { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
385       { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
386       { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 }
387     },
388     { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
389       { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
390       { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
391     },
392     { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
393       { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
394       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
395     },
396     { { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
397       { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
398       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
399     },
400     { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
401       { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
402       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
403     },
404     { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
405       { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
406       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
407     },
408     { { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
409       { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
410       { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
411     },
412     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
413       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
414       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
415     }
416   },
417   { { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
418       { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
419       { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 }
420     },
421     { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
422       { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
423       { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 }
424     },
425     { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
426       { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
427       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
428     },
429     { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
430       { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
431       { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
432     },
433     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
434       { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
435       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
436     },
437     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
438       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
439       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
440     },
441     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
442       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
443       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
444     },
445     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
446       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
447       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
448     }
449   },
450   { { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
451       { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
452       { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 }
453     },
454     { { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
455       { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
456       { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 }
457     },
458     { { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
459       { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
460       { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 }
461     },
462     { { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
463       { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
464       { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
465     },
466     { { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
467       { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
468       { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
469     },
470     { { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
471       { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
472       { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }
473     },
474     { { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
475       { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
476       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
477     },
478     { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
479       { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
480       { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }
481     }
482   }
483 };
484 
VP8WriteProbas(VP8BitWriter * const bw,const VP8EncProba * const probas)485 void VP8WriteProbas(VP8BitWriter* const bw, const VP8EncProba* const probas) {
486   int t, b, c, p;
487   for (t = 0; t < NUM_TYPES; ++t) {
488     for (b = 0; b < NUM_BANDS; ++b) {
489       for (c = 0; c < NUM_CTX; ++c) {
490         for (p = 0; p < NUM_PROBAS; ++p) {
491           const uint8_t p0 = probas->coeffs_[t][b][c][p];
492           const int update = (p0 != VP8CoeffsProba0[t][b][c][p]);
493           if (VP8PutBit(bw, update, VP8CoeffsUpdateProba[t][b][c][p])) {
494             VP8PutBits(bw, p0, 8);
495           }
496         }
497       }
498     }
499   }
500   if (VP8PutBitUniform(bw, probas->use_skip_proba_)) {
501     VP8PutBits(bw, probas->skip_proba_, 8);
502   }
503 }
504 
505