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 12 #include "vp9/common/vp9_blockd.h" 13 #include "vp9/common/vp9_common_data.h" 14 15 // Log 2 conversion lookup tables for block width and height 16 const int b_width_log2_lookup[BLOCK_SIZES] = 17 {0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4}; 18 const int b_height_log2_lookup[BLOCK_SIZES] = 19 {0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4}; 20 const int num_4x4_blocks_wide_lookup[BLOCK_SIZES] = 21 {1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16, 16}; 22 const int num_4x4_blocks_high_lookup[BLOCK_SIZES] = 23 {1, 2, 1, 2, 4, 2, 4, 8, 4, 8, 16, 8, 16}; 24 // Log 2 conversion lookup tables for modeinfo width and height 25 const int mi_width_log2_lookup[BLOCK_SIZES] = 26 {0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3}; 27 const int num_8x8_blocks_wide_lookup[BLOCK_SIZES] = 28 {1, 1, 1, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8}; 29 const int num_8x8_blocks_high_lookup[BLOCK_SIZES] = 30 {1, 1, 1, 1, 2, 1, 2, 4, 2, 4, 8, 4, 8}; 31 32 // MIN(3, MIN(b_width_log2(bsize), b_height_log2(bsize))) 33 const int size_group_lookup[BLOCK_SIZES] = 34 {0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3}; 35 36 const int num_pels_log2_lookup[BLOCK_SIZES] = 37 {4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12}; 38 39 40 const PARTITION_TYPE partition_lookup[][BLOCK_SIZES] = { 41 { // 4X4 42 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 43 PARTITION_NONE, PARTITION_INVALID, PARTITION_INVALID, 44 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 45 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 46 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 47 PARTITION_INVALID 48 }, { // 8X8 49 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 50 PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE, 51 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 52 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 53 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID 54 }, { // 16X16 55 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 56 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 57 PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID, 58 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID, 59 PARTITION_INVALID, PARTITION_INVALID 60 }, { // 32X32 61 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 62 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 63 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT, 64 PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID, 65 PARTITION_INVALID, PARTITION_INVALID 66 }, { // 64X64 67 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64 68 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 69 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, 70 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ, 71 PARTITION_NONE 72 } 73 }; 74 75 const BLOCK_SIZE subsize_lookup[PARTITION_TYPES][BLOCK_SIZES] = { 76 { // PARTITION_NONE 77 BLOCK_4X4, BLOCK_4X8, BLOCK_8X4, 78 BLOCK_8X8, BLOCK_8X16, BLOCK_16X8, 79 BLOCK_16X16, BLOCK_16X32, BLOCK_32X16, 80 BLOCK_32X32, BLOCK_32X64, BLOCK_64X32, 81 BLOCK_64X64, 82 }, { // PARTITION_HORZ 83 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 84 BLOCK_8X4, BLOCK_INVALID, BLOCK_INVALID, 85 BLOCK_16X8, BLOCK_INVALID, BLOCK_INVALID, 86 BLOCK_32X16, BLOCK_INVALID, BLOCK_INVALID, 87 BLOCK_64X32, 88 }, { // PARTITION_VERT 89 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 90 BLOCK_4X8, BLOCK_INVALID, BLOCK_INVALID, 91 BLOCK_8X16, BLOCK_INVALID, BLOCK_INVALID, 92 BLOCK_16X32, BLOCK_INVALID, BLOCK_INVALID, 93 BLOCK_32X64, 94 }, { // PARTITION_SPLIT 95 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID, 96 BLOCK_4X4, BLOCK_INVALID, BLOCK_INVALID, 97 BLOCK_8X8, BLOCK_INVALID, BLOCK_INVALID, 98 BLOCK_16X16, BLOCK_INVALID, BLOCK_INVALID, 99 BLOCK_32X32, 100 } 101 }; 102 103 const TX_SIZE max_txsize_lookup[BLOCK_SIZES] = { 104 TX_4X4, TX_4X4, TX_4X4, 105 TX_8X8, TX_8X8, TX_8X8, 106 TX_16X16, TX_16X16, TX_16X16, 107 TX_32X32, TX_32X32, TX_32X32, TX_32X32 108 }; 109 110 const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = { 111 TX_4X4, // ONLY_4X4 112 TX_8X8, // ALLOW_8X8 113 TX_16X16, // ALLOW_16X16 114 TX_32X32, // ALLOW_32X32 115 TX_32X32, // TX_MODE_SELECT 116 }; 117 118 const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2] = { 119 // ss_x == 0 ss_x == 0 ss_x == 1 ss_x == 1 120 // ss_y == 0 ss_y == 1 ss_y == 0 ss_y == 1 121 {{BLOCK_4X4, BLOCK_INVALID}, {BLOCK_INVALID, BLOCK_INVALID}}, 122 {{BLOCK_4X8, BLOCK_4X4}, {BLOCK_INVALID, BLOCK_INVALID}}, 123 {{BLOCK_8X4, BLOCK_INVALID}, {BLOCK_4X4, BLOCK_INVALID}}, 124 {{BLOCK_8X8, BLOCK_8X4}, {BLOCK_4X8, BLOCK_4X4}}, 125 {{BLOCK_8X16, BLOCK_8X8}, {BLOCK_INVALID, BLOCK_4X8}}, 126 {{BLOCK_16X8, BLOCK_INVALID}, {BLOCK_8X8, BLOCK_8X4}}, 127 {{BLOCK_16X16, BLOCK_16X8}, {BLOCK_8X16, BLOCK_8X8}}, 128 {{BLOCK_16X32, BLOCK_16X16}, {BLOCK_INVALID, BLOCK_8X16}}, 129 {{BLOCK_32X16, BLOCK_INVALID}, {BLOCK_16X16, BLOCK_16X8}}, 130 {{BLOCK_32X32, BLOCK_32X16}, {BLOCK_16X32, BLOCK_16X16}}, 131 {{BLOCK_32X64, BLOCK_32X32}, {BLOCK_INVALID, BLOCK_16X32}}, 132 {{BLOCK_64X32, BLOCK_INVALID}, {BLOCK_32X32, BLOCK_32X16}}, 133 {{BLOCK_64X64, BLOCK_64X32}, {BLOCK_32X64, BLOCK_32X32}}, 134 }; 135 136 // Generates 4 bit field in which each bit set to 1 represents 137 // a blocksize partition 1111 means we split 64x64, 32x32, 16x16 138 // and 8x8. 1000 means we just split the 64x64 to 32x32 139 const struct { 140 PARTITION_CONTEXT above; 141 PARTITION_CONTEXT left; 142 } partition_context_lookup[BLOCK_SIZES]= { 143 {15, 15}, // 4X4 - {0b1111, 0b1111} 144 {15, 14}, // 4X8 - {0b1111, 0b1110} 145 {14, 15}, // 8X4 - {0b1110, 0b1111} 146 {14, 14}, // 8X8 - {0b1110, 0b1110} 147 {14, 12}, // 8X16 - {0b1110, 0b1100} 148 {12, 14}, // 16X8 - {0b1100, 0b1110} 149 {12, 12}, // 16X16 - {0b1100, 0b1100} 150 {12, 8 }, // 16X32 - {0b1100, 0b1000} 151 {8, 12}, // 32X16 - {0b1000, 0b1100} 152 {8, 8 }, // 32X32 - {0b1000, 0b1000} 153 {8, 0 }, // 32X64 - {0b1000, 0b0000} 154 {0, 8 }, // 64X32 - {0b0000, 0b1000} 155 {0, 0 }, // 64X64 - {0b0000, 0b0000} 156 }; 157