| // Copyright 2010 Google Inc. All Rights Reserved. |
| // |
| // Use of this source code is governed by a BSD-style license |
| // that can be found in the COPYING file in the root of the source |
| // tree. An additional intellectual property rights grant can be found |
| // in the file PATENTS. All contributing project authors may |
| // be found in the AUTHORS file in the root of the source tree. |
| // ----------------------------------------------------------------------------- |
| // |
| // Coding trees and probas |
| // |
| // Author: Skal (pascal.massimino@gmail.com) |
| |
| #if defined(STARBOARD) |
| #include "starboard/client_porting/poem/string_poem.h" |
| #endif |
| |
| #include "src/dec/vp8i_dec.h" |
| #include "src/utils/bit_reader_inl_utils.h" |
| |
| #if !defined(USE_GENERIC_TREE) |
| #if !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__) |
| // using a table is ~1-2% slower on ARM. Prefer the coded-tree approach then. |
| #define USE_GENERIC_TREE 1 // ALTERNATE_CODE |
| #else |
| #define USE_GENERIC_TREE 0 |
| #endif |
| #endif // USE_GENERIC_TREE |
| |
| #if (USE_GENERIC_TREE == 1) |
| static const int8_t kYModesIntra4[18] = { |
| -B_DC_PRED, 1, |
| -B_TM_PRED, 2, |
| -B_VE_PRED, 3, |
| 4, 6, |
| -B_HE_PRED, 5, |
| -B_RD_PRED, -B_VR_PRED, |
| -B_LD_PRED, 7, |
| -B_VL_PRED, 8, |
| -B_HD_PRED, -B_HU_PRED |
| }; |
| #endif |
| |
| //------------------------------------------------------------------------------ |
| // Default probabilities |
| |
| // Paragraph 13.5 |
| static const uint8_t |
| CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = { |
| { { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } |
| }, |
| { { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 }, |
| { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 }, |
| { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 } |
| }, |
| { { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 }, |
| { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 }, |
| { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 }, |
| }, |
| { { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 }, |
| { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 }, |
| { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 }, |
| }, |
| { { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 }, |
| { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 }, |
| { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 } |
| }, |
| { { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 }, |
| { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 }, |
| { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 } |
| }, |
| { { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 }, |
| { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 }, |
| { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 } |
| }, |
| { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } |
| } |
| }, |
| { { { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 }, |
| { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 }, |
| { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 } |
| }, |
| { { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 }, |
| { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 }, |
| { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 } |
| }, |
| { { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 }, |
| { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 }, |
| { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 } |
| }, |
| { { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 }, |
| { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 }, |
| { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 } |
| }, |
| { { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 }, |
| { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 }, |
| { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 } |
| }, |
| { { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 }, |
| { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 }, |
| { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 } |
| }, |
| { { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 }, |
| { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 }, |
| { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 } |
| }, |
| { { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 }, |
| { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 }, |
| { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 } |
| } |
| }, |
| { { { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 }, |
| { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 }, |
| { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 } |
| }, |
| { { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 }, |
| { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 }, |
| { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 } |
| }, |
| { { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 }, |
| { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 }, |
| { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 } |
| }, |
| { { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 }, |
| { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 }, |
| { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 } |
| }, |
| { { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 }, |
| { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 }, |
| { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 } |
| }, |
| { { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 } |
| }, |
| { { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 }, |
| { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 }, |
| { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 } |
| }, |
| { { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 } |
| } |
| }, |
| { { { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 }, |
| { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 }, |
| { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 } |
| }, |
| { { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 }, |
| { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 }, |
| { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 } |
| }, |
| { { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 }, |
| { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 }, |
| { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 } |
| }, |
| { { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 }, |
| { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 }, |
| { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 } |
| }, |
| { { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 }, |
| { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 }, |
| { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 } |
| }, |
| { { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 }, |
| { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 }, |
| { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 } |
| }, |
| { { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 }, |
| { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 }, |
| { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 } |
| }, |
| { { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 }, |
| { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 } |
| } |
| } |
| }; |
| |
| // Paragraph 11.5 |
| static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = { |
| { { 231, 120, 48, 89, 115, 113, 120, 152, 112 }, |
| { 152, 179, 64, 126, 170, 118, 46, 70, 95 }, |
| { 175, 69, 143, 80, 85, 82, 72, 155, 103 }, |
| { 56, 58, 10, 171, 218, 189, 17, 13, 152 }, |
| { 114, 26, 17, 163, 44, 195, 21, 10, 173 }, |
| { 121, 24, 80, 195, 26, 62, 44, 64, 85 }, |
| { 144, 71, 10, 38, 171, 213, 144, 34, 26 }, |
| { 170, 46, 55, 19, 136, 160, 33, 206, 71 }, |
| { 63, 20, 8, 114, 114, 208, 12, 9, 226 }, |
| { 81, 40, 11, 96, 182, 84, 29, 16, 36 } }, |
| { { 134, 183, 89, 137, 98, 101, 106, 165, 148 }, |
| { 72, 187, 100, 130, 157, 111, 32, 75, 80 }, |
| { 66, 102, 167, 99, 74, 62, 40, 234, 128 }, |
| { 41, 53, 9, 178, 241, 141, 26, 8, 107 }, |
| { 74, 43, 26, 146, 73, 166, 49, 23, 157 }, |
| { 65, 38, 105, 160, 51, 52, 31, 115, 128 }, |
| { 104, 79, 12, 27, 217, 255, 87, 17, 7 }, |
| { 87, 68, 71, 44, 114, 51, 15, 186, 23 }, |
| { 47, 41, 14, 110, 182, 183, 21, 17, 194 }, |
| { 66, 45, 25, 102, 197, 189, 23, 18, 22 } }, |
| { { 88, 88, 147, 150, 42, 46, 45, 196, 205 }, |
| { 43, 97, 183, 117, 85, 38, 35, 179, 61 }, |
| { 39, 53, 200, 87, 26, 21, 43, 232, 171 }, |
| { 56, 34, 51, 104, 114, 102, 29, 93, 77 }, |
| { 39, 28, 85, 171, 58, 165, 90, 98, 64 }, |
| { 34, 22, 116, 206, 23, 34, 43, 166, 73 }, |
| { 107, 54, 32, 26, 51, 1, 81, 43, 31 }, |
| { 68, 25, 106, 22, 64, 171, 36, 225, 114 }, |
| { 34, 19, 21, 102, 132, 188, 16, 76, 124 }, |
| { 62, 18, 78, 95, 85, 57, 50, 48, 51 } }, |
| { { 193, 101, 35, 159, 215, 111, 89, 46, 111 }, |
| { 60, 148, 31, 172, 219, 228, 21, 18, 111 }, |
| { 112, 113, 77, 85, 179, 255, 38, 120, 114 }, |
| { 40, 42, 1, 196, 245, 209, 10, 25, 109 }, |
| { 88, 43, 29, 140, 166, 213, 37, 43, 154 }, |
| { 61, 63, 30, 155, 67, 45, 68, 1, 209 }, |
| { 100, 80, 8, 43, 154, 1, 51, 26, 71 }, |
| { 142, 78, 78, 16, 255, 128, 34, 197, 171 }, |
| { 41, 40, 5, 102, 211, 183, 4, 1, 221 }, |
| { 51, 50, 17, 168, 209, 192, 23, 25, 82 } }, |
| { { 138, 31, 36, 171, 27, 166, 38, 44, 229 }, |
| { 67, 87, 58, 169, 82, 115, 26, 59, 179 }, |
| { 63, 59, 90, 180, 59, 166, 93, 73, 154 }, |
| { 40, 40, 21, 116, 143, 209, 34, 39, 175 }, |
| { 47, 15, 16, 183, 34, 223, 49, 45, 183 }, |
| { 46, 17, 33, 183, 6, 98, 15, 32, 183 }, |
| { 57, 46, 22, 24, 128, 1, 54, 17, 37 }, |
| { 65, 32, 73, 115, 28, 128, 23, 128, 205 }, |
| { 40, 3, 9, 115, 51, 192, 18, 6, 223 }, |
| { 87, 37, 9, 115, 59, 77, 64, 21, 47 } }, |
| { { 104, 55, 44, 218, 9, 54, 53, 130, 226 }, |
| { 64, 90, 70, 205, 40, 41, 23, 26, 57 }, |
| { 54, 57, 112, 184, 5, 41, 38, 166, 213 }, |
| { 30, 34, 26, 133, 152, 116, 10, 32, 134 }, |
| { 39, 19, 53, 221, 26, 114, 32, 73, 255 }, |
| { 31, 9, 65, 234, 2, 15, 1, 118, 73 }, |
| { 75, 32, 12, 51, 192, 255, 160, 43, 51 }, |
| { 88, 31, 35, 67, 102, 85, 55, 186, 85 }, |
| { 56, 21, 23, 111, 59, 205, 45, 37, 192 }, |
| { 55, 38, 70, 124, 73, 102, 1, 34, 98 } }, |
| { { 125, 98, 42, 88, 104, 85, 117, 175, 82 }, |
| { 95, 84, 53, 89, 128, 100, 113, 101, 45 }, |
| { 75, 79, 123, 47, 51, 128, 81, 171, 1 }, |
| { 57, 17, 5, 71, 102, 57, 53, 41, 49 }, |
| { 38, 33, 13, 121, 57, 73, 26, 1, 85 }, |
| { 41, 10, 67, 138, 77, 110, 90, 47, 114 }, |
| { 115, 21, 2, 10, 102, 255, 166, 23, 6 }, |
| { 101, 29, 16, 10, 85, 128, 101, 196, 26 }, |
| { 57, 18, 10, 102, 102, 213, 34, 20, 43 }, |
| { 117, 20, 15, 36, 163, 128, 68, 1, 26 } }, |
| { { 102, 61, 71, 37, 34, 53, 31, 243, 192 }, |
| { 69, 60, 71, 38, 73, 119, 28, 222, 37 }, |
| { 68, 45, 128, 34, 1, 47, 11, 245, 171 }, |
| { 62, 17, 19, 70, 146, 85, 55, 62, 70 }, |
| { 37, 43, 37, 154, 100, 163, 85, 160, 1 }, |
| { 63, 9, 92, 136, 28, 64, 32, 201, 85 }, |
| { 75, 15, 9, 9, 64, 255, 184, 119, 16 }, |
| { 86, 6, 28, 5, 64, 255, 25, 248, 1 }, |
| { 56, 8, 17, 132, 137, 255, 55, 116, 128 }, |
| { 58, 15, 20, 82, 135, 57, 26, 121, 40 } }, |
| { { 164, 50, 31, 137, 154, 133, 25, 35, 218 }, |
| { 51, 103, 44, 131, 131, 123, 31, 6, 158 }, |
| { 86, 40, 64, 135, 148, 224, 45, 183, 128 }, |
| { 22, 26, 17, 131, 240, 154, 14, 1, 209 }, |
| { 45, 16, 21, 91, 64, 222, 7, 1, 197 }, |
| { 56, 21, 39, 155, 60, 138, 23, 102, 213 }, |
| { 83, 12, 13, 54, 192, 255, 68, 47, 28 }, |
| { 85, 26, 85, 85, 128, 128, 32, 146, 171 }, |
| { 18, 11, 7, 63, 144, 171, 4, 4, 246 }, |
| { 35, 27, 10, 146, 174, 171, 12, 26, 128 } }, |
| { { 190, 80, 35, 99, 180, 80, 126, 54, 45 }, |
| { 85, 126, 47, 87, 176, 51, 41, 20, 32 }, |
| { 101, 75, 128, 139, 118, 146, 116, 128, 85 }, |
| { 56, 41, 15, 176, 236, 85, 37, 9, 62 }, |
| { 71, 30, 17, 119, 118, 255, 17, 18, 138 }, |
| { 101, 38, 60, 138, 55, 70, 43, 26, 142 }, |
| { 146, 36, 19, 30, 171, 255, 97, 27, 20 }, |
| { 138, 45, 61, 62, 219, 1, 81, 188, 64 }, |
| { 32, 41, 20, 117, 151, 142, 20, 21, 163 }, |
| { 112, 19, 12, 61, 195, 128, 48, 4, 24 } } |
| }; |
| |
| void VP8ResetProba(VP8Proba* const proba) { |
| memset(proba->segments_, 255u, sizeof(proba->segments_)); |
| // proba->bands_[][] is initialized later |
| } |
| |
| static void ParseIntraMode(VP8BitReader* const br, |
| VP8Decoder* const dec, int mb_x) { |
| uint8_t* const top = dec->intra_t_ + 4 * mb_x; |
| uint8_t* const left = dec->intra_l_; |
| VP8MBData* const block = dec->mb_data_ + mb_x; |
| |
| // Note: we don't save segment map (yet), as we don't expect |
| // to decode more than 1 keyframe. |
| if (dec->segment_hdr_.update_map_) { |
| // Hardcoded tree parsing |
| block->segment_ = !VP8GetBit(br, dec->proba_.segments_[0]) |
| ? VP8GetBit(br, dec->proba_.segments_[1]) |
| : 2 + VP8GetBit(br, dec->proba_.segments_[2]); |
| } else { |
| block->segment_ = 0; // default for intra |
| } |
| if (dec->use_skip_proba_) block->skip_ = VP8GetBit(br, dec->skip_p_); |
| |
| block->is_i4x4_ = !VP8GetBit(br, 145); // decide for B_PRED first |
| if (!block->is_i4x4_) { |
| // Hardcoded 16x16 intra-mode decision tree. |
| const int ymode = |
| VP8GetBit(br, 156) ? (VP8GetBit(br, 128) ? TM_PRED : H_PRED) |
| : (VP8GetBit(br, 163) ? V_PRED : DC_PRED); |
| block->imodes_[0] = ymode; |
| memset(top, ymode, 4 * sizeof(*top)); |
| memset(left, ymode, 4 * sizeof(*left)); |
| } else { |
| uint8_t* modes = block->imodes_; |
| int y; |
| for (y = 0; y < 4; ++y) { |
| int ymode = left[y]; |
| int x; |
| for (x = 0; x < 4; ++x) { |
| const uint8_t* const prob = kBModesProba[top[x]][ymode]; |
| #if (USE_GENERIC_TREE == 1) |
| // Generic tree-parsing |
| int i = kYModesIntra4[VP8GetBit(br, prob[0])]; |
| while (i > 0) { |
| i = kYModesIntra4[2 * i + VP8GetBit(br, prob[i])]; |
| } |
| ymode = -i; |
| #else |
| // Hardcoded tree parsing |
| ymode = !VP8GetBit(br, prob[0]) ? B_DC_PRED : |
| !VP8GetBit(br, prob[1]) ? B_TM_PRED : |
| !VP8GetBit(br, prob[2]) ? B_VE_PRED : |
| !VP8GetBit(br, prob[3]) ? |
| (!VP8GetBit(br, prob[4]) ? B_HE_PRED : |
| (!VP8GetBit(br, prob[5]) ? B_RD_PRED : B_VR_PRED)) : |
| (!VP8GetBit(br, prob[6]) ? B_LD_PRED : |
| (!VP8GetBit(br, prob[7]) ? B_VL_PRED : |
| (!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED))); |
| #endif // USE_GENERIC_TREE |
| top[x] = ymode; |
| } |
| memcpy(modes, top, 4 * sizeof(*top)); |
| modes += 4; |
| left[y] = ymode; |
| } |
| } |
| // Hardcoded UVMode decision tree |
| block->uvmode_ = !VP8GetBit(br, 142) ? DC_PRED |
| : !VP8GetBit(br, 114) ? V_PRED |
| : VP8GetBit(br, 183) ? TM_PRED : H_PRED; |
| } |
| |
| int VP8ParseIntraModeRow(VP8BitReader* const br, VP8Decoder* const dec) { |
| int mb_x; |
| for (mb_x = 0; mb_x < dec->mb_w_; ++mb_x) { |
| ParseIntraMode(br, dec, mb_x); |
| } |
| return !dec->br_.eof_; |
| } |
| |
| //------------------------------------------------------------------------------ |
| // Paragraph 13 |
| |
| static const uint8_t |
| CoeffsUpdateProba[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = { |
| { { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 }, |
| { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| } |
| }, |
| { { { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 }, |
| { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 } |
| }, |
| { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| } |
| }, |
| { { { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 }, |
| { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 } |
| }, |
| { { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| } |
| }, |
| { { { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 }, |
| { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| }, |
| { { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 }, |
| { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 } |
| } |
| } |
| }; |
| |
| // Paragraph 9.9 |
| |
| static const uint8_t kBands[16 + 1] = { |
| 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, |
| 0 // extra entry as sentinel |
| }; |
| |
| void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) { |
| VP8Proba* const proba = &dec->proba_; |
| int t, b, c, p; |
| for (t = 0; t < NUM_TYPES; ++t) { |
| for (b = 0; b < NUM_BANDS; ++b) { |
| for (c = 0; c < NUM_CTX; ++c) { |
| for (p = 0; p < NUM_PROBAS; ++p) { |
| const int v = VP8GetBit(br, CoeffsUpdateProba[t][b][c][p]) ? |
| VP8GetValue(br, 8) : CoeffsProba0[t][b][c][p]; |
| proba->bands_[t][b].probas_[c][p] = v; |
| } |
| } |
| } |
| for (b = 0; b < 16 + 1; ++b) { |
| proba->bands_ptr_[t][b] = &proba->bands_[t][kBands[b]]; |
| } |
| } |
| dec->use_skip_proba_ = VP8Get(br); |
| if (dec->use_skip_proba_) { |
| dec->skip_p_ = VP8GetValue(br, 8); |
| } |
| } |
| |
