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