/* * Copyright (c) 2023, Nico Weber * * SPDX-License-Identifier: BSD-2-Clause */ #pragma once // Contains fixed data tables from the VP8 spec. namespace Gfx { using Prob = u8; using TreeIndex = i8; // https://datatracker.ietf.org/doc/html/rfc6386#section-10 "Segment-Based Feature Adjustments" const TreeIndex MACROBLOCK_SEGMENT_TREE[2 * (4 - 1)] = { 2, 4, /* root: "0", "1" subtrees */ -0, -1, /* "00" = 0th value, "01" = 1st value */ -2, -3 /* "10" = 2nd value, "11" = 3rd value */ }; // https://datatracker.ietf.org/doc/html/rfc6386#section-8.2 "Tree Coding Example" // Repeated in https://datatracker.ietf.org/doc/html/rfc6386#section-11.2 "Luma Modes" enum IntraMacroblockMode : u8 { DC_PRED, /* predict DC using row above and column to the left */ V_PRED, /* predict rows using row above */ H_PRED, /* predict columns using column to the left */ TM_PRED, /* propagate second differences a la "True Motion" */ B_PRED, /* each Y subblock is independently predicted */ num_uv_modes = B_PRED, /* first four modes apply to chroma */ num_ymodes /* all modes apply to luma */ }; // https://datatracker.ietf.org/doc/html/rfc6386#section-19.3 says "intra_y_mode selects the luminance intra-prediction mode (Section 16.1)", // but for keyframes the correct reference is actually https://datatracker.ietf.org/doc/html/rfc6386#section-11.2 "Luma Modes". // That is, we want "kf_ymode_tree", not "ymode_tree", and "kf_ymode_prob", not "ymode_prob". // See "decode_kf_mb_mode" in the reference decoder in the spec. static TreeIndex constexpr KEYFRAME_YMODE_TREE[2 * (num_ymodes - 1)] = { -B_PRED, 2, /* root: B_PRED = "0", "1" subtree */ 4, 6, /* "1" subtree has 2 descendant subtrees */ -DC_PRED, -V_PRED, /* "10" subtree: DC_PRED = "100", V_PRED = "101" */ -H_PRED, -TM_PRED /* "11" subtree: H_PRED = "110", TM_PRED = "111" */ }; static Prob constexpr KEYFRAME_YMODE_PROBABILITIES[num_ymodes - 1] = { 145, 156, 163, 128 }; // https://datatracker.ietf.org/doc/html/rfc6386#section-11.2 "Luma Modes" enum IntraBlockMode : u8 { B_DC_PRED, /* predict DC using row above and column to the left */ B_TM_PRED, /* propagate second differences a la "True Motion" */ B_VE_PRED, /* predict rows using row above */ B_HE_PRED, /* predict columns using column to the left */ B_LD_PRED, /* southwest (left and down) 45 degree diagonal prediction */ B_RD_PRED, /* southeast (right and down) "" */ B_VR_PRED, /* SSE (vertical right) diagonal prediction */ B_VL_PRED, /* SSW (vertical left) "" */ B_HD_PRED, /* ESE (horizontal down) "" */ B_HU_PRED, /* ENE (horizontal up) "" */ num_intra_bmodes }; // clang-format off static TreeIndex constexpr BLOCK_MODE_TREE[2 * (num_intra_bmodes - 1)] = { -B_DC_PRED, 2, /* B_DC_PRED = "0" */ -B_TM_PRED, 4, /* B_TM_PRED = "10" */ -B_VE_PRED, 6, /* B_VE_PRED = "110" */ 8, 12, -B_HE_PRED, 10, /* B_HE_PRED = "11100" */ -B_RD_PRED, -B_VR_PRED, /* B_RD_PRED = "111010", B_VR_PRED = "111011" */ -B_LD_PRED, 14, /* B_LD_PRED = "111110" */ -B_VL_PRED, 16, /* B_VL_PRED = "1111110" */ -B_HD_PRED, -B_HU_PRED /* HD = "11111110", HU = "11111111" */ }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-11.4 "Chroma Modes" // clang-format off static TreeIndex constexpr UV_MODE_TREE[2 * (num_uv_modes - 1)] = { -DC_PRED, 2, /* root: DC_PRED = "0", "1" subtree */ -V_PRED, 4, /* "1" subtree: V_PRED = "10", "11" subtree */ -H_PRED, -TM_PRED /* "11" subtree: H_PRED = "110", TM_PRED = "111" */ }; // clang-format on static Prob constexpr KEYFRAME_UV_MODE_PROBABILITIES[num_uv_modes - 1] = { 142, 114, 183 }; // https://datatracker.ietf.org/doc/html/rfc6386#section-11.5 "Subblock Mode Probability Table" // clang-format off const Prob KEYFRAME_BLOCK_MODE_PROBABILITIES[num_intra_bmodes][num_intra_bmodes][num_intra_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 }, { 144, 71, 10, 38, 171, 213, 144, 34, 26 }, { 114, 26, 17, 163, 44, 195, 21, 10, 173 }, { 121, 24, 80, 195, 26, 62, 44, 64, 85 }, { 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 }, { 104, 79, 12, 27, 217, 255, 87, 17, 7 }, { 74, 43, 26, 146, 73, 166, 49, 23, 157 }, { 65, 38, 105, 160, 51, 52, 31, 115, 128 }, { 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 }, { 107, 54, 32, 26, 51, 1, 81, 43, 31 }, { 39, 28, 85, 171, 58, 165, 90, 98, 64 }, { 34, 22, 116, 206, 23, 34, 43, 166, 73 }, { 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 }, { 100, 80, 8, 43, 154, 1, 51, 26, 71 }, { 88, 43, 29, 140, 166, 213, 37, 43, 154 }, { 61, 63, 30, 155, 67, 45, 68, 1, 209 }, { 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 } }, { { 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 }, { 115, 21, 2, 10, 102, 255, 166, 23, 6 }, { 38, 33, 13, 121, 57, 73, 26, 1, 85 }, { 41, 10, 67, 138, 77, 110, 90, 47, 114 }, { 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 } }, { { 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 }, { 57, 46, 22, 24, 128, 1, 54, 17, 37 }, { 47, 15, 16, 183, 34, 223, 49, 45, 183 }, { 46, 17, 33, 183, 6, 98, 15, 32, 183 }, { 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 }, { 75, 32, 12, 51, 192, 255, 160, 43, 51 }, { 39, 19, 53, 221, 26, 114, 32, 73, 255 }, { 31, 9, 65, 234, 2, 15, 1, 118, 73 }, { 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 } }, { { 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 }, { 75, 15, 9, 9, 64, 255, 184, 119, 16 }, { 37, 43, 37, 154, 100, 163, 85, 160, 1 }, { 63, 9, 92, 136, 28, 64, 32, 201, 85 }, { 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 }, { 83, 12, 13, 54, 192, 255, 68, 47, 28 }, { 45, 16, 21, 91, 64, 222, 7, 1, 197 }, { 56, 21, 39, 155, 60, 138, 23, 102, 213 }, { 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 }, { 146, 36, 19, 30, 171, 255, 97, 27, 20 }, { 71, 30, 17, 119, 118, 255, 17, 18, 138 }, { 101, 38, 60, 138, 55, 70, 43, 26, 142 }, { 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 } } }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-13.2 "Coding of Individual Coefficient Values" enum DCTToken { DCT_0, /* value 0 */ DCT_1, /* 1 */ DCT_2, /* 2 */ DCT_3, /* 3 */ DCT_4, /* 4 */ dct_cat1, /* range 5 - 6 (size 2) */ dct_cat2, /* 7 - 10 (4) */ dct_cat3, /* 11 - 18 (8) */ dct_cat4, /* 19 - 34 (16) */ dct_cat5, /* 35 - 66 (32) */ dct_cat6, /* 67 - 2048 (1982) */ dct_eob, /* end of block */ num_dct_tokens /* 12 */ }; // clang-format off const TreeIndex COEFFICIENT_TREE[2 * (num_dct_tokens - 1)] = { -dct_eob, 2, /* eob = "0" */ -DCT_0, 4, /* 0 = "10" */ -DCT_1, 6, /* 1 = "110" */ 8, 12, -DCT_2, 10, /* 2 = "11100" */ -DCT_3, -DCT_4, /* 3 = "111010", 4 = "111011" */ 14, 16, -dct_cat1, -dct_cat2, /* cat1 = "111100", cat2 = "111101" */ 18, 20, -dct_cat3, -dct_cat4, /* cat3 = "1111100", cat4 = "1111101" */ -dct_cat5, -dct_cat6 /* cat4 = "1111110", cat4 = "1111111" */ }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-13.4 "Token Probability Updates" // clang-format off static Prob constexpr COEFFICIENT_UPDATE_PROBABILITIES[4][8][3][num_dct_tokens - 1] = { { { { 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 } } } }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-13.5 "Default Token Probability Table" // clang-format off static Prob constexpr DEFAULT_COEFFICIENT_PROBABILITIES[4][8][3][num_dct_tokens - 1] = { { { { 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 }, }, }, }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-14.1 "Dequantization" // clang-format off static int constexpr dc_qlookup[] = { 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 17, 18, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 91, 93, 95, 96, 98, 100, 101, 102, 104, 106, 108, 110, 112, 114, 116, 118, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 143, 145, 148, 151, 154, 157, }; static int constexpr ac_qlookup[] = { 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 161, 164, 167, 170, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 234, 239, 245, 249, 254, 259, 264, 269, 274, 279, 284, }; // clang-format on // https://datatracker.ietf.org/doc/html/rfc6386#section-14.3 "Implementation of the WHT Inversion" inline void vp8_short_inv_walsh4x4_c(i16 const* input, i16* output) { i16 const* ip = input; i16* op = output; for (int i = 0; i < 4; i++) { int a1 = ip[0] + ip[12]; int b1 = ip[4] + ip[8]; int c1 = ip[4] - ip[8]; int d1 = ip[0] - ip[12]; op[0] = a1 + b1; op[4] = c1 + d1; op[8] = a1 - b1; op[12] = d1 - c1; ip++; op++; } ip = output; op = output; for (int i = 0; i < 4; i++) { int a1 = ip[0] + ip[3]; int b1 = ip[1] + ip[2]; int c1 = ip[1] - ip[2]; int d1 = ip[0] - ip[3]; int a2 = a1 + b1; int b2 = c1 + d1; int c2 = a1 - b1; int d2 = d1 - c1; op[0] = (a2 + 3) >> 3; op[1] = (b2 + 3) >> 3; op[2] = (c2 + 3) >> 3; op[3] = (d2 + 3) >> 3; ip += 4; op += 4; } } // https://datatracker.ietf.org/doc/html/rfc6386#section-14.4 "Implementation of the DCT Inversion" inline void short_idct4x4llm_c(i16 const* input, i16* output, int pitch) { static constexpr int cospi8sqrt2minus1 = 20091; static constexpr int sinpi8sqrt2 = 35468; i16 const* ip = input; i16* op = output; int shortpitch = pitch >> 1; for (int i = 0; i < 4; i++) { int a1 = ip[0] + ip[8]; int b1 = ip[0] - ip[8]; int temp1 = (ip[4] * sinpi8sqrt2) >> 16; int temp2 = ip[12] + ((ip[12] * cospi8sqrt2minus1) >> 16); int c1 = temp1 - temp2; temp1 = ip[4] + ((ip[4] * cospi8sqrt2minus1) >> 16); temp2 = (ip[12] * sinpi8sqrt2) >> 16; int d1 = temp1 + temp2; op[shortpitch * 0] = a1 + d1; op[shortpitch * 3] = a1 - d1; op[shortpitch * 1] = b1 + c1; op[shortpitch * 2] = b1 - c1; ip++; op++; } ip = output; op = output; for (int i = 0; i < 4; i++) { int a1 = ip[0] + ip[2]; int b1 = ip[0] - ip[2]; int temp1 = (ip[1] * sinpi8sqrt2) >> 16; int temp2 = ip[3] + ((ip[3] * cospi8sqrt2minus1) >> 16); int c1 = temp1 - temp2; temp1 = ip[1] + ((ip[1] * cospi8sqrt2minus1) >> 16); temp2 = (ip[3] * sinpi8sqrt2) >> 16; int d1 = temp1 + temp2; op[0] = (a1 + d1 + 4) >> 3; op[3] = (a1 - d1 + 4) >> 3; op[1] = (b1 + c1 + 4) >> 3; op[2] = (b1 - c1 + 4) >> 3; ip += shortpitch; op += shortpitch; } } }