1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "vp9/common/vp9_common_data.h" 12 13 // Log 2 conversion lookup tables for block width and height 14 const uint8_t b_width_log2_lookup[BLOCK_SIZES] = 15 {0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4}; 16 const uint8_t b_height_log2_lookup[BLOCK_SIZES] = 17 {0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4}; 18 const uint8_t num_4x4_blocks_wide_lookup[BLOCK_SIZES] = 19 {1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16, 16}; 20 const uint8_t num_4x4_blocks_high_lookup[BLOCK_SIZES] = 21 {1, 2, 1, 2, 4, 2, 4, 8, 4, 8, 16, 8, 16}; 22 // Log 2 conversion lookup tables for modeinfo width and height 23 const uint8_t mi_width_log2_lookup[BLOCK_SIZES] = 24 {0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3}; 25 const uint8_t num_8x8_blocks_wide_lookup[BLOCK_SIZES] = 26 {1, 1, 1, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8}; 27 const uint8_t num_8x8_blocks_high_lookup[BLOCK_SIZES] = 28 {1, 1, 1, 1, 2, 1, 2, 4, 2, 4, 8, 4, 8}; 29 30 // MIN(3, MIN(b_width_log2(bsize), b_height_log2(bsize))) 31 const uint8_t size_group_lookup[BLOCK_SIZES] = 32 {0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3}; 33 34 const uint8_t num_pels_log2_lookup[BLOCK_SIZES] = 35 {4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12}; 36 37 const PARTITION_TYPE partition_lookup[][BLOCK_SIZES] = { 38 { // 4X4 39 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 40 PARTITION_NONE, PARTITION_INVALID, PARTITION_INVALID, 41 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 42 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 43 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 44 PARTITION_INVALID 45 }, { // 8X8 46 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 47 PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE, 48 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 49 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 50 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID 51 }, { // 16X16 52 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 53 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 54 PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID, 55 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 56 PARTITION_INVALID, PARTITION_INVALID 57 }, { // 32X32 58 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 59 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 60 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT, 61 PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID, 62 PARTITION_INVALID, PARTITION_INVALID 63 }, { // 64X64 64 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 65 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 66 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 67 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ, 68 PARTITION_NONE 69 } 70 }; 71 72 const BLOCK_SIZE subsize_lookup[PARTITION_TYPES][BLOCK_SIZES] = { 73 { // PARTITION_NONE 74 BLOCK_4X4, BLOCK_4X8, BLOCK_8X4, 75 BLOCK_8X8, BLOCK_8X16, BLOCK_16X8, 76 BLOCK_16X16, BLOCK_16X32, BLOCK_32X16, 77 BLOCK_32X32, BLOCK_32X64, BLOCK_64X32, 78 BLOCK_64X64, 79 }, { // PARTITION_HORZ 80 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 81 BLOCK_8X4, BLOCK_INVALID, BLOCK_INVALID, 82 BLOCK_16X8, BLOCK_INVALID, BLOCK_INVALID, 83 BLOCK_32X16, BLOCK_INVALID, BLOCK_INVALID, 84 BLOCK_64X32, 85 }, { // PARTITION_VERT 86 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 87 BLOCK_4X8, BLOCK_INVALID, BLOCK_INVALID, 88 BLOCK_8X16, BLOCK_INVALID, BLOCK_INVALID, 89 BLOCK_16X32, BLOCK_INVALID, BLOCK_INVALID, 90 BLOCK_32X64, 91 }, { // PARTITION_SPLIT 92 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 93 BLOCK_4X4, BLOCK_INVALID, BLOCK_INVALID, 94 BLOCK_8X8, BLOCK_INVALID, BLOCK_INVALID, 95 BLOCK_16X16, BLOCK_INVALID, BLOCK_INVALID, 96 BLOCK_32X32, 97 } 98 }; 99 100 const TX_SIZE max_txsize_lookup[BLOCK_SIZES] = { 101 TX_4X4, TX_4X4, TX_4X4, 102 TX_8X8, TX_8X8, TX_8X8, 103 TX_16X16, TX_16X16, TX_16X16, 104 TX_32X32, TX_32X32, TX_32X32, TX_32X32 105 }; 106 107 const BLOCK_SIZE txsize_to_bsize[TX_SIZES] = { 108 BLOCK_4X4, // TX_4X4 109 BLOCK_8X8, // TX_8X8 110 BLOCK_16X16, // TX_16X16 111 BLOCK_32X32, // TX_32X32 112 }; 113 114 const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = { 115 TX_4X4, // ONLY_4X4 116 TX_8X8, // ALLOW_8X8 117 TX_16X16, // ALLOW_16X16 118 TX_32X32, // ALLOW_32X32 119 TX_32X32, // TX_MODE_SELECT 120 }; 121 122 const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2] = { 123 // ss_x == 0 ss_x == 0 ss_x == 1 ss_x == 1 124 // ss_y == 0 ss_y == 1 ss_y == 0 ss_y == 1 125 {{BLOCK_4X4, BLOCK_INVALID}, {BLOCK_INVALID, BLOCK_INVALID}}, 126 {{BLOCK_4X8, BLOCK_4X4}, {BLOCK_INVALID, BLOCK_INVALID}}, 127 {{BLOCK_8X4, BLOCK_INVALID}, {BLOCK_4X4, BLOCK_INVALID}}, 128 {{BLOCK_8X8, BLOCK_8X4}, {BLOCK_4X8, BLOCK_4X4}}, 129 {{BLOCK_8X16, BLOCK_8X8}, {BLOCK_INVALID, BLOCK_4X8}}, 130 {{BLOCK_16X8, BLOCK_INVALID}, {BLOCK_8X8, BLOCK_8X4}}, 131 {{BLOCK_16X16, BLOCK_16X8}, {BLOCK_8X16, BLOCK_8X8}}, 132 {{BLOCK_16X32, BLOCK_16X16}, {BLOCK_INVALID, BLOCK_8X16}}, 133 {{BLOCK_32X16, BLOCK_INVALID}, {BLOCK_16X16, BLOCK_16X8}}, 134 {{BLOCK_32X32, BLOCK_32X16}, {BLOCK_16X32, BLOCK_16X16}}, 135 {{BLOCK_32X64, BLOCK_32X32}, {BLOCK_INVALID, BLOCK_16X32}}, 136 {{BLOCK_64X32, BLOCK_INVALID}, {BLOCK_32X32, BLOCK_32X16}}, 137 {{BLOCK_64X64, BLOCK_64X32}, {BLOCK_32X64, BLOCK_32X32}}, 138 }; 139 140 // Generates 4 bit field in which each bit set to 1 represents 141 // a blocksize partition 1111 means we split 64x64, 32x32, 16x16 142 // and 8x8. 1000 means we just split the 64x64 to 32x32 143 const struct { 144 PARTITION_CONTEXT above; 145 PARTITION_CONTEXT left; 146 } partition_context_lookup[BLOCK_SIZES]= { 147 {15, 15}, // 4X4 - {0b1111, 0b1111} 148 {15, 14}, // 4X8 - {0b1111, 0b1110} 149 {14, 15}, // 8X4 - {0b1110, 0b1111} 150 {14, 14}, // 8X8 - {0b1110, 0b1110} 151 {14, 12}, // 8X16 - {0b1110, 0b1100} 152 {12, 14}, // 16X8 - {0b1100, 0b1110} 153 {12, 12}, // 16X16 - {0b1100, 0b1100} 154 {12, 8 }, // 16X32 - {0b1100, 0b1000} 155 {8, 12}, // 32X16 - {0b1000, 0b1100} 156 {8, 8 }, // 32X32 - {0b1000, 0b1000} 157 {8, 0 }, // 32X64 - {0b1000, 0b0000} 158 {0, 8 }, // 64X32 - {0b0000, 0b1000} 159 {0, 0 }, // 64X64 - {0b0000, 0b0000} 160 }; 161