1 // Copyright 2010 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 trees and probas 11 // 12 // Author: Skal (pascal.massimino (at) gmail.com) 13 14 #include "vp8i.h" 15 16 #define USE_GENERIC_TREE 17 18 #if defined(__cplusplus) || defined(c_plusplus) 19 extern "C" { 20 #endif 21 22 #ifdef USE_GENERIC_TREE 23 static const int8_t kYModesIntra4[18] = { 24 -B_DC_PRED, 1, 25 -B_TM_PRED, 2, 26 -B_VE_PRED, 3, 27 4, 6, 28 -B_HE_PRED, 5, 29 -B_RD_PRED, -B_VR_PRED, 30 -B_LD_PRED, 7, 31 -B_VL_PRED, 8, 32 -B_HD_PRED, -B_HU_PRED 33 }; 34 #endif 35 36 #ifndef ONLY_KEYFRAME_CODE 37 38 // inter prediction modes 39 enum { 40 LEFT4 = 0, ABOVE4 = 1, ZERO4 = 2, NEW4 = 3, 41 NEARESTMV, NEARMV, ZEROMV, NEWMV, SPLITMV }; 42 43 static const int8_t kYModesInter[8] = { 44 -DC_PRED, 1, 45 2, 3, 46 -V_PRED, -H_PRED, 47 -TM_PRED, -B_PRED 48 }; 49 50 static const int8_t kMBSplit[6] = { 51 -3, 1, 52 -2, 2, 53 -0, -1 54 }; 55 56 static const int8_t kMVRef[8] = { 57 -ZEROMV, 1, 58 -NEARESTMV, 2, 59 -NEARMV, 3, 60 -NEWMV, -SPLITMV 61 }; 62 63 static const int8_t kMVRef4[6] = { 64 -LEFT4, 1, 65 -ABOVE4, 2, 66 -ZERO4, -NEW4 67 }; 68 #endif 69 70 //------------------------------------------------------------------------------ 71 // Default probabilities 72 73 // Inter 74 #ifndef ONLY_KEYFRAME_CODE 75 static const uint8_t kYModeProbaInter0[4] = { 112, 86, 140, 37 }; 76 static const uint8_t kUVModeProbaInter0[3] = { 162, 101, 204 }; 77 static const uint8_t kMVProba0[2][NUM_MV_PROBAS] = { 78 { 162, 128, 225, 146, 172, 147, 214, 39, 79 156, 128, 129, 132, 75, 145, 178, 206, 80 239, 254, 254 }, 81 { 164, 128, 204, 170, 119, 235, 140, 230, 82 228, 128, 130, 130, 74, 148, 180, 203, 83 236, 254, 254 } 84 }; 85 #endif 86 87 // Paragraph 13.5 88 static const uint8_t 89 CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = { 90 // genereated using vp8_default_coef_probs() in entropy.c:129 91 { { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, 92 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, 93 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } 94 }, 95 { { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 }, 96 { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 }, 97 { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 } 98 }, 99 { { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 }, 100 { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 }, 101 { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 }, 102 }, 103 { { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 }, 104 { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 }, 105 { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 }, 106 }, 107 { { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 }, 108 { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 }, 109 { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 } 110 }, 111 { { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 }, 112 { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 }, 113 { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 } 114 }, 115 { { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 }, 116 { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 }, 117 { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 } 118 }, 119 { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 120 { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 121 { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } 122 } 123 }, 124 { { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 }, 125 { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 }, 126 { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 } 127 }, 128 { { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 }, 129 { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 }, 130 { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 } 131 }, 132 { { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 }, 133 { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 }, 134 { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 } 135 }, 136 { { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 }, 137 { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 }, 138 { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 } 139 }, 140 { { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 }, 141 { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 }, 142 { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 } 143 }, 144 { { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 }, 145 { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 }, 146 { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 } 147 }, 148 { { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 }, 149 { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 }, 150 { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 } 151 }, 152 { { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 }, 153 { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 }, 154 { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 } 155 } 156 }, 157 { { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 }, 158 { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 }, 159 { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 } 160 }, 161 { { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 }, 162 { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 }, 163 { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 } 164 }, 165 { { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 }, 166 { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 }, 167 { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 } 168 }, 169 { { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 }, 170 { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 }, 171 { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 } 172 }, 173 { { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 }, 174 { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 }, 175 { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 } 176 }, 177 { { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 178 { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 179 { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 } 180 }, 181 { { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 }, 182 { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 }, 183 { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 } 184 }, 185 { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, 186 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, 187 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } 188 } 189 }, 190 { { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 }, 191 { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 }, 192 { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 } 193 }, 194 { { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 }, 195 { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 }, 196 { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 } 197 }, 198 { { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 }, 199 { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 }, 200 { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 } 201 }, 202 { { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 }, 203 { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 }, 204 { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 } 205 }, 206 { { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 }, 207 { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 }, 208 { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 } 209 }, 210 { { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 }, 211 { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 }, 212 { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 } 213 }, 214 { { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 }, 215 { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 }, 216 { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 } 217 }, 218 { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 219 { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, 220 { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 } 221 } 222 } 223 }; 224 225 // Paragraph 11.5 226 static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = { 227 { { 231, 120, 48, 89, 115, 113, 120, 152, 112 }, 228 { 152, 179, 64, 126, 170, 118, 46, 70, 95 }, 229 { 175, 69, 143, 80, 85, 82, 72, 155, 103 }, 230 { 56, 58, 10, 171, 218, 189, 17, 13, 152 }, 231 { 114, 26, 17, 163, 44, 195, 21, 10, 173 }, 232 { 121, 24, 80, 195, 26, 62, 44, 64, 85 }, 233 { 144, 71, 10, 38, 171, 213, 144, 34, 26 }, 234 { 170, 46, 55, 19, 136, 160, 33, 206, 71 }, 235 { 63, 20, 8, 114, 114, 208, 12, 9, 226 }, 236 { 81, 40, 11, 96, 182, 84, 29, 16, 36 } }, 237 { { 134, 183, 89, 137, 98, 101, 106, 165, 148 }, 238 { 72, 187, 100, 130, 157, 111, 32, 75, 80 }, 239 { 66, 102, 167, 99, 74, 62, 40, 234, 128 }, 240 { 41, 53, 9, 178, 241, 141, 26, 8, 107 }, 241 { 74, 43, 26, 146, 73, 166, 49, 23, 157 }, 242 { 65, 38, 105, 160, 51, 52, 31, 115, 128 }, 243 { 104, 79, 12, 27, 217, 255, 87, 17, 7 }, 244 { 87, 68, 71, 44, 114, 51, 15, 186, 23 }, 245 { 47, 41, 14, 110, 182, 183, 21, 17, 194 }, 246 { 66, 45, 25, 102, 197, 189, 23, 18, 22 } }, 247 { { 88, 88, 147, 150, 42, 46, 45, 196, 205 }, 248 { 43, 97, 183, 117, 85, 38, 35, 179, 61 }, 249 { 39, 53, 200, 87, 26, 21, 43, 232, 171 }, 250 { 56, 34, 51, 104, 114, 102, 29, 93, 77 }, 251 { 39, 28, 85, 171, 58, 165, 90, 98, 64 }, 252 { 34, 22, 116, 206, 23, 34, 43, 166, 73 }, 253 { 107, 54, 32, 26, 51, 1, 81, 43, 31 }, 254 { 68, 25, 106, 22, 64, 171, 36, 225, 114 }, 255 { 34, 19, 21, 102, 132, 188, 16, 76, 124 }, 256 { 62, 18, 78, 95, 85, 57, 50, 48, 51 } }, 257 { { 193, 101, 35, 159, 215, 111, 89, 46, 111 }, 258 { 60, 148, 31, 172, 219, 228, 21, 18, 111 }, 259 { 112, 113, 77, 85, 179, 255, 38, 120, 114 }, 260 { 40, 42, 1, 196, 245, 209, 10, 25, 109 }, 261 { 88, 43, 29, 140, 166, 213, 37, 43, 154 }, 262 { 61, 63, 30, 155, 67, 45, 68, 1, 209 }, 263 { 100, 80, 8, 43, 154, 1, 51, 26, 71 }, 264 { 142, 78, 78, 16, 255, 128, 34, 197, 171 }, 265 { 41, 40, 5, 102, 211, 183, 4, 1, 221 }, 266 { 51, 50, 17, 168, 209, 192, 23, 25, 82 } }, 267 { { 138, 31, 36, 171, 27, 166, 38, 44, 229 }, 268 { 67, 87, 58, 169, 82, 115, 26, 59, 179 }, 269 { 63, 59, 90, 180, 59, 166, 93, 73, 154 }, 270 { 40, 40, 21, 116, 143, 209, 34, 39, 175 }, 271 { 47, 15, 16, 183, 34, 223, 49, 45, 183 }, 272 { 46, 17, 33, 183, 6, 98, 15, 32, 183 }, 273 { 57, 46, 22, 24, 128, 1, 54, 17, 37 }, 274 { 65, 32, 73, 115, 28, 128, 23, 128, 205 }, 275 { 40, 3, 9, 115, 51, 192, 18, 6, 223 }, 276 { 87, 37, 9, 115, 59, 77, 64, 21, 47 } }, 277 { { 104, 55, 44, 218, 9, 54, 53, 130, 226 }, 278 { 64, 90, 70, 205, 40, 41, 23, 26, 57 }, 279 { 54, 57, 112, 184, 5, 41, 38, 166, 213 }, 280 { 30, 34, 26, 133, 152, 116, 10, 32, 134 }, 281 { 39, 19, 53, 221, 26, 114, 32, 73, 255 }, 282 { 31, 9, 65, 234, 2, 15, 1, 118, 73 }, 283 { 75, 32, 12, 51, 192, 255, 160, 43, 51 }, 284 { 88, 31, 35, 67, 102, 85, 55, 186, 85 }, 285 { 56, 21, 23, 111, 59, 205, 45, 37, 192 }, 286 { 55, 38, 70, 124, 73, 102, 1, 34, 98 } }, 287 { { 125, 98, 42, 88, 104, 85, 117, 175, 82 }, 288 { 95, 84, 53, 89, 128, 100, 113, 101, 45 }, 289 { 75, 79, 123, 47, 51, 128, 81, 171, 1 }, 290 { 57, 17, 5, 71, 102, 57, 53, 41, 49 }, 291 { 38, 33, 13, 121, 57, 73, 26, 1, 85 }, 292 { 41, 10, 67, 138, 77, 110, 90, 47, 114 }, 293 { 115, 21, 2, 10, 102, 255, 166, 23, 6 }, 294 { 101, 29, 16, 10, 85, 128, 101, 196, 26 }, 295 { 57, 18, 10, 102, 102, 213, 34, 20, 43 }, 296 { 117, 20, 15, 36, 163, 128, 68, 1, 26 } }, 297 { { 102, 61, 71, 37, 34, 53, 31, 243, 192 }, 298 { 69, 60, 71, 38, 73, 119, 28, 222, 37 }, 299 { 68, 45, 128, 34, 1, 47, 11, 245, 171 }, 300 { 62, 17, 19, 70, 146, 85, 55, 62, 70 }, 301 { 37, 43, 37, 154, 100, 163, 85, 160, 1 }, 302 { 63, 9, 92, 136, 28, 64, 32, 201, 85 }, 303 { 75, 15, 9, 9, 64, 255, 184, 119, 16 }, 304 { 86, 6, 28, 5, 64, 255, 25, 248, 1 }, 305 { 56, 8, 17, 132, 137, 255, 55, 116, 128 }, 306 { 58, 15, 20, 82, 135, 57, 26, 121, 40 } }, 307 { { 164, 50, 31, 137, 154, 133, 25, 35, 218 }, 308 { 51, 103, 44, 131, 131, 123, 31, 6, 158 }, 309 { 86, 40, 64, 135, 148, 224, 45, 183, 128 }, 310 { 22, 26, 17, 131, 240, 154, 14, 1, 209 }, 311 { 45, 16, 21, 91, 64, 222, 7, 1, 197 }, 312 { 56, 21, 39, 155, 60, 138, 23, 102, 213 }, 313 { 83, 12, 13, 54, 192, 255, 68, 47, 28 }, 314 { 85, 26, 85, 85, 128, 128, 32, 146, 171 }, 315 { 18, 11, 7, 63, 144, 171, 4, 4, 246 }, 316 { 35, 27, 10, 146, 174, 171, 12, 26, 128 } }, 317 { { 190, 80, 35, 99, 180, 80, 126, 54, 45 }, 318 { 85, 126, 47, 87, 176, 51, 41, 20, 32 }, 319 { 101, 75, 128, 139, 118, 146, 116, 128, 85 }, 320 { 56, 41, 15, 176, 236, 85, 37, 9, 62 }, 321 { 71, 30, 17, 119, 118, 255, 17, 18, 138 }, 322 { 101, 38, 60, 138, 55, 70, 43, 26, 142 }, 323 { 146, 36, 19, 30, 171, 255, 97, 27, 20 }, 324 { 138, 45, 61, 62, 219, 1, 81, 188, 64 }, 325 { 32, 41, 20, 117, 151, 142, 20, 21, 163 }, 326 { 112, 19, 12, 61, 195, 128, 48, 4, 24 } } 327 }; 328 329 void VP8ResetProba(VP8Proba* const proba) { 330 memset(proba->segments_, 255u, sizeof(proba->segments_)); 331 memcpy(proba->coeffs_, CoeffsProba0, sizeof(CoeffsProba0)); 332 #ifndef ONLY_KEYFRAME_CODE 333 memcpy(proba->mv_, kMVProba0, sizeof(kMVProba0)); 334 memcpy(proba->ymode_, kYModeProbaInter0, sizeof(kYModeProbaInter0)); 335 memcpy(proba->uvmode_, kUVModeProbaInter0, sizeof(kUVModeProbaInter0)); 336 #endif 337 } 338 339 void VP8ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec) { 340 uint8_t* const top = dec->intra_t_ + 4 * dec->mb_x_; 341 uint8_t* const left = dec->intra_l_; 342 // Hardcoded 16x16 intra-mode decision tree. 343 dec->is_i4x4_ = !VP8GetBit(br, 145); // decide for B_PRED first 344 if (!dec->is_i4x4_) { 345 const int ymode = 346 VP8GetBit(br, 156) ? (VP8GetBit(br, 128) ? TM_PRED : H_PRED) 347 : (VP8GetBit(br, 163) ? V_PRED : DC_PRED); 348 dec->imodes_[0] = ymode; 349 memset(top, ymode, 4 * sizeof(top[0])); 350 memset(left, ymode, 4 * sizeof(left[0])); 351 } else { 352 uint8_t* modes = dec->imodes_; 353 int y; 354 for (y = 0; y < 4; ++y) { 355 int ymode = left[y]; 356 int x; 357 for (x = 0; x < 4; ++x) { 358 const uint8_t* const prob = kBModesProba[top[x]][ymode]; 359 #ifdef USE_GENERIC_TREE 360 // Generic tree-parsing 361 int i = 0; 362 do { 363 i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i])]; 364 } while (i > 0); 365 ymode = -i; 366 #else 367 // Hardcoded tree parsing 368 ymode = !VP8GetBit(br, prob[0]) ? B_DC_PRED : 369 !VP8GetBit(br, prob[1]) ? B_TM_PRED : 370 !VP8GetBit(br, prob[2]) ? B_VE_PRED : 371 !VP8GetBit(br, prob[3]) ? 372 (!VP8GetBit(br, prob[4]) ? B_HE_PRED : 373 (!VP8GetBit(br, prob[5]) ? B_RD_PRED : B_VR_PRED)) : 374 (!VP8GetBit(br, prob[6]) ? B_LD_PRED : 375 (!VP8GetBit(br, prob[7]) ? B_VL_PRED : 376 (!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED))); 377 #endif // USE_GENERIC_TREE 378 top[x] = ymode; 379 *modes++ = ymode; 380 } 381 left[y] = ymode; 382 } 383 } 384 // Hardcoded UVMode decision tree 385 dec->uvmode_ = !VP8GetBit(br, 142) ? DC_PRED 386 : !VP8GetBit(br, 114) ? V_PRED 387 : VP8GetBit(br, 183) ? TM_PRED : H_PRED; 388 } 389 390 //------------------------------------------------------------------------------ 391 // Paragraph 13 392 393 static const uint8_t 394 CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = { 395 { { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 396 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 397 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 398 }, 399 { { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 400 { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, 401 { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 } 402 }, 403 { { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, 404 { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 405 { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 406 }, 407 { { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 408 { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 409 { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } 410 }, 411 { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 412 { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 413 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 414 }, 415 { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 416 { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 417 { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } 418 }, 419 { { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 }, 420 { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 }, 421 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 422 }, 423 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 424 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 425 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 426 } 427 }, 428 { { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 429 { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 }, 430 { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 } 431 }, 432 { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 433 { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 434 { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 } 435 }, 436 { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 437 { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 438 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 439 }, 440 { { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 441 { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 442 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 443 }, 444 { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 445 { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 446 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 447 }, 448 { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 449 { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 450 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 451 }, 452 { { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 453 { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 454 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 455 }, 456 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 457 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 458 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 459 } 460 }, 461 { { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 }, 462 { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 }, 463 { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 } 464 }, 465 { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 466 { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 467 { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 } 468 }, 469 { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 470 { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 471 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 472 }, 473 { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 474 { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 475 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 476 }, 477 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 478 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 479 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 480 }, 481 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 482 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 483 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 484 }, 485 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 486 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 487 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 488 }, 489 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 490 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 491 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 492 } 493 }, 494 { { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 495 { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 }, 496 { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 } 497 }, 498 { { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 499 { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 500 { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 } 501 }, 502 { { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, 503 { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 504 { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 } 505 }, 506 { { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 507 { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 508 { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 } 509 }, 510 { { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 511 { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 512 { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 513 }, 514 { { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 515 { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, 516 { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } 517 }, 518 { { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, 519 { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 520 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 521 }, 522 { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 523 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, 524 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } 525 } 526 } 527 }; 528 529 #ifndef ONLY_KEYFRAME_CODE 530 static const uint8_t MVUpdateProba[2][NUM_MV_PROBAS] = { 531 { 237, 246, 253, 253, 254, 254, 254, 254, 532 254, 254, 254, 254, 254, 254, 250, 250, 533 252, 254, 254 }, 534 { 231, 243, 245, 253, 254, 254, 254, 254, 535 254, 254, 254, 254, 254, 254, 251, 251, 536 254, 254, 254 } 537 }; 538 #endif 539 540 // Paragraph 9.9 541 void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) { 542 VP8Proba* const proba = &dec->proba_; 543 int t, b, c, p; 544 for (t = 0; t < NUM_TYPES; ++t) { 545 for (b = 0; b < NUM_BANDS; ++b) { 546 for (c = 0; c < NUM_CTX; ++c) { 547 for (p = 0; p < NUM_PROBAS; ++p) { 548 if (VP8GetBit(br, CoeffsUpdateProba[t][b][c][p])) { 549 proba->coeffs_[t][b][c][p] = VP8GetValue(br, 8); 550 } 551 } 552 } 553 } 554 } 555 dec->use_skip_proba_ = VP8Get(br); 556 if (dec->use_skip_proba_) { 557 dec->skip_p_ = VP8GetValue(br, 8); 558 } 559 #ifndef ONLY_KEYFRAME_CODE 560 if (!dec->frm_hdr_.key_frame_) { 561 int i; 562 dec->intra_p_ = VP8GetValue(br, 8); 563 dec->last_p_ = VP8GetValue(br, 8); 564 dec->golden_p_ = VP8GetValue(br, 8); 565 if (VP8Get(br)) { // update y-mode 566 for (i = 0; i < 4; ++i) { 567 proba->ymode_[i] = VP8GetValue(br, 8); 568 } 569 } 570 if (VP8Get(br)) { // update uv-mode 571 for (i = 0; i < 3; ++i) { 572 proba->uvmode_[i] = VP8GetValue(br, 8); 573 } 574 } 575 // update MV 576 for (i = 0; i < 2; ++i) { 577 int k; 578 for (k = 0; k < NUM_MV_PROBAS; ++k) { 579 if (VP8GetBit(br, MVUpdateProba[i][k])) { 580 const int v = VP8GetValue(br, 7); 581 proba->mv_[i][k] = v ? v << 1 : 1; 582 } 583 } 584 } 585 } 586 #endif 587 } 588 589 #if defined(__cplusplus) || defined(c_plusplus) 590 } // extern "C" 591 #endif 592
