2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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.
12 #include "vp9/common/vp9_blockd.h"
13 #include "vp9/common/vp9_common_data.h"
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};
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};
36 const int num_pels_log2_lookup[BLOCK_SIZES] =
37 {4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12};
40 const PARTITION_TYPE partition_lookup[][BLOCK_SIZES] = {
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,
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
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
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
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,
75 const BLOCK_SIZE subsize_lookup[PARTITION_TYPES][BLOCK_SIZES] = {
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,
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,
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,
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,
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
110 const BLOCK_SIZE txsize_to_bsize[TX_SIZES] = {
113 BLOCK_16X16, // TX_16X16
114 BLOCK_32X32, // TX_32X32
117 const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = {
120 TX_16X16, // ALLOW_16X16
121 TX_32X32, // ALLOW_32X32
122 TX_32X32, // TX_MODE_SELECT
125 const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2] = {
126 // ss_x == 0 ss_x == 0 ss_x == 1 ss_x == 1
127 // ss_y == 0 ss_y == 1 ss_y == 0 ss_y == 1
128 {{BLOCK_4X4, BLOCK_INVALID}, {BLOCK_INVALID, BLOCK_INVALID}},
129 {{BLOCK_4X8, BLOCK_4X4}, {BLOCK_INVALID, BLOCK_INVALID}},
130 {{BLOCK_8X4, BLOCK_INVALID}, {BLOCK_4X4, BLOCK_INVALID}},
131 {{BLOCK_8X8, BLOCK_8X4}, {BLOCK_4X8, BLOCK_4X4}},
132 {{BLOCK_8X16, BLOCK_8X8}, {BLOCK_INVALID, BLOCK_4X8}},
133 {{BLOCK_16X8, BLOCK_INVALID}, {BLOCK_8X8, BLOCK_8X4}},
134 {{BLOCK_16X16, BLOCK_16X8}, {BLOCK_8X16, BLOCK_8X8}},
135 {{BLOCK_16X32, BLOCK_16X16}, {BLOCK_INVALID, BLOCK_8X16}},
136 {{BLOCK_32X16, BLOCK_INVALID}, {BLOCK_16X16, BLOCK_16X8}},
137 {{BLOCK_32X32, BLOCK_32X16}, {BLOCK_16X32, BLOCK_16X16}},
138 {{BLOCK_32X64, BLOCK_32X32}, {BLOCK_INVALID, BLOCK_16X32}},
139 {{BLOCK_64X32, BLOCK_INVALID}, {BLOCK_32X32, BLOCK_32X16}},
140 {{BLOCK_64X64, BLOCK_64X32}, {BLOCK_32X64, BLOCK_32X32}},
143 // Generates 4 bit field in which each bit set to 1 represents
144 // a blocksize partition 1111 means we split 64x64, 32x32, 16x16
145 // and 8x8. 1000 means we just split the 64x64 to 32x32
147 PARTITION_CONTEXT above;
148 PARTITION_CONTEXT left;
149 } partition_context_lookup[BLOCK_SIZES]= {
150 {15, 15}, // 4X4 - {0b1111, 0b1111}
151 {15, 14}, // 4X8 - {0b1111, 0b1110}
152 {14, 15}, // 8X4 - {0b1110, 0b1111}
153 {14, 14}, // 8X8 - {0b1110, 0b1110}
154 {14, 12}, // 8X16 - {0b1110, 0b1100}
155 {12, 14}, // 16X8 - {0b1100, 0b1110}
156 {12, 12}, // 16X16 - {0b1100, 0b1100}
157 {12, 8 }, // 16X32 - {0b1100, 0b1000}
158 {8, 12}, // 32X16 - {0b1000, 0b1100}
159 {8, 8 }, // 32X32 - {0b1000, 0b1000}
160 {8, 0 }, // 32X64 - {0b1000, 0b0000}
161 {0, 8 }, // 64X32 - {0b0000, 0b1000}
162 {0, 0 }, // 64X64 - {0b0000, 0b0000}