The Tor Browser / annotate

media/libvpx/vp9/common/vp9_common_data.c@ac0c01689b40 (annotated)

media/libvpx/vp9/common/vp9_common_data.c

Thu, 15 Jan 2015 15:59:08 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 15:59:08 +0100
branch
TOR_BUG_9701
changeset 10
ac0c01689b40
permissions
-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0 1 /*
michael@0 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0 3 *
michael@0 4 * Use of this source code is governed by a BSD-style license
michael@0 5 * that can be found in the LICENSE file in the root of the source
michael@0 6 * tree. An additional intellectual property rights grant can be found
michael@0 7 * in the file PATENTS. All contributing project authors may
michael@0 8 * be found in the AUTHORS file in the root of the source tree.
michael@0 9 */
michael@0 10
michael@0 11
michael@0 12 #include "vp9/common/vp9_blockd.h"
michael@0 13 #include "vp9/common/vp9_common_data.h"
michael@0 14
michael@0 15 // Log 2 conversion lookup tables for block width and height
michael@0 16 const int b_width_log2_lookup[BLOCK_SIZES] =
michael@0 17 {0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4};
michael@0 18 const int b_height_log2_lookup[BLOCK_SIZES] =
michael@0 19 {0, 1, 0, 1, 2, 1, 2, 3, 2, 3, 4, 3, 4};
michael@0 20 const int num_4x4_blocks_wide_lookup[BLOCK_SIZES] =
michael@0 21 {1, 1, 2, 2, 2, 4, 4, 4, 8, 8, 8, 16, 16};
michael@0 22 const int num_4x4_blocks_high_lookup[BLOCK_SIZES] =
michael@0 23 {1, 2, 1, 2, 4, 2, 4, 8, 4, 8, 16, 8, 16};
michael@0 24 // Log 2 conversion lookup tables for modeinfo width and height
michael@0 25 const int mi_width_log2_lookup[BLOCK_SIZES] =
michael@0 26 {0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3};
michael@0 27 const int num_8x8_blocks_wide_lookup[BLOCK_SIZES] =
michael@0 28 {1, 1, 1, 1, 1, 2, 2, 2, 4, 4, 4, 8, 8};
michael@0 29 const int mi_height_log2_lookup[BLOCK_SIZES] =
michael@0 30 {0, 0, 0, 0, 1, 0, 1, 2, 1, 2, 3, 2, 3};
michael@0 31 const int num_8x8_blocks_high_lookup[BLOCK_SIZES] =
michael@0 32 {1, 1, 1, 1, 2, 1, 2, 4, 2, 4, 8, 4, 8};
michael@0 33
michael@0 34 // MIN(3, MIN(b_width_log2(bsize), b_height_log2(bsize)))
michael@0 35 const int size_group_lookup[BLOCK_SIZES] =
michael@0 36 {0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3};
michael@0 37
michael@0 38 const int num_pels_log2_lookup[BLOCK_SIZES] =
michael@0 39 {4, 5, 5, 6, 7, 7, 8, 9, 9, 10, 11, 11, 12};
michael@0 40
michael@0 41
michael@0 42 const PARTITION_TYPE partition_lookup[][BLOCK_SIZES] = {
michael@0 43 { // 4X4
michael@0 44 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64
michael@0 45 PARTITION_NONE, PARTITION_INVALID, PARTITION_INVALID,
michael@0 46 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 47 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 48 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 49 PARTITION_INVALID
michael@0 50 }, { // 8X8
michael@0 51 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64
michael@0 52 PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE,
michael@0 53 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 54 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 55 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID
michael@0 56 }, { // 16X16
michael@0 57 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64
michael@0 58 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT,
michael@0 59 PARTITION_VERT, PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID,
michael@0 60 PARTITION_INVALID, PARTITION_INVALID, PARTITION_INVALID,
michael@0 61 PARTITION_INVALID, PARTITION_INVALID
michael@0 62 }, { // 32X32
michael@0 63 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64
michael@0 64 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT,
michael@0 65 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT,
michael@0 66 PARTITION_HORZ, PARTITION_NONE, PARTITION_INVALID,
michael@0 67 PARTITION_INVALID, PARTITION_INVALID
michael@0 68 }, { // 64X64
michael@0 69 // 4X4, 4X8,8X4,8X8,8X16,16X8,16X16,16X32,32X16,32X32,32X64,64X32,64X64
michael@0 70 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT,
michael@0 71 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_SPLIT,
michael@0 72 PARTITION_SPLIT, PARTITION_SPLIT, PARTITION_VERT, PARTITION_HORZ,
michael@0 73 PARTITION_NONE
michael@0 74 }
michael@0 75 };
michael@0 76
michael@0 77 const BLOCK_SIZE subsize_lookup[PARTITION_TYPES][BLOCK_SIZES] = {
michael@0 78 { // PARTITION_NONE
michael@0 79 BLOCK_4X4, BLOCK_4X8, BLOCK_8X4,
michael@0 80 BLOCK_8X8, BLOCK_8X16, BLOCK_16X8,
michael@0 81 BLOCK_16X16, BLOCK_16X32, BLOCK_32X16,
michael@0 82 BLOCK_32X32, BLOCK_32X64, BLOCK_64X32,
michael@0 83 BLOCK_64X64,
michael@0 84 }, { // PARTITION_HORZ
michael@0 85 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID,
michael@0 86 BLOCK_8X4, BLOCK_INVALID, BLOCK_INVALID,
michael@0 87 BLOCK_16X8, BLOCK_INVALID, BLOCK_INVALID,
michael@0 88 BLOCK_32X16, BLOCK_INVALID, BLOCK_INVALID,
michael@0 89 BLOCK_64X32,
michael@0 90 }, { // PARTITION_VERT
michael@0 91 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID,
michael@0 92 BLOCK_4X8, BLOCK_INVALID, BLOCK_INVALID,
michael@0 93 BLOCK_8X16, BLOCK_INVALID, BLOCK_INVALID,
michael@0 94 BLOCK_16X32, BLOCK_INVALID, BLOCK_INVALID,
michael@0 95 BLOCK_32X64,
michael@0 96 }, { // PARTITION_SPLIT
michael@0 97 BLOCK_INVALID, BLOCK_INVALID, BLOCK_INVALID,
michael@0 98 BLOCK_4X4, BLOCK_INVALID, BLOCK_INVALID,
michael@0 99 BLOCK_8X8, BLOCK_INVALID, BLOCK_INVALID,
michael@0 100 BLOCK_16X16, BLOCK_INVALID, BLOCK_INVALID,
michael@0 101 BLOCK_32X32,
michael@0 102 }
michael@0 103 };
michael@0 104
michael@0 105 const TX_SIZE max_txsize_lookup[BLOCK_SIZES] = {
michael@0 106 TX_4X4, TX_4X4, TX_4X4,
michael@0 107 TX_8X8, TX_8X8, TX_8X8,
michael@0 108 TX_16X16, TX_16X16, TX_16X16,
michael@0 109 TX_32X32, TX_32X32, TX_32X32, TX_32X32
michael@0 110 };
michael@0 111 const TX_SIZE max_uv_txsize_lookup[BLOCK_SIZES] = {
michael@0 112 TX_4X4, TX_4X4, TX_4X4,
michael@0 113 TX_4X4, TX_4X4, TX_4X4,
michael@0 114 TX_8X8, TX_8X8, TX_8X8,
michael@0 115 TX_16X16, TX_16X16, TX_16X16, TX_32X32
michael@0 116 };
michael@0 117
michael@0 118 const TX_SIZE tx_mode_to_biggest_tx_size[TX_MODES] = {
michael@0 119 TX_4X4, // ONLY_4X4
michael@0 120 TX_8X8, // ALLOW_8X8
michael@0 121 TX_16X16, // ALLOW_16X16
michael@0 122 TX_32X32, // ALLOW_32X32
michael@0 123 TX_32X32, // TX_MODE_SELECT
michael@0 124 };
michael@0 125
michael@0 126
michael@0 127
michael@0 128 const BLOCK_SIZE ss_size_lookup[BLOCK_SIZES][2][2] = {
michael@0 129 // ss_x == 0 ss_x == 0 ss_x == 1 ss_x == 1
michael@0 130 // ss_y == 0 ss_y == 1 ss_y == 0 ss_y == 1
michael@0 131 {{BLOCK_4X4, BLOCK_INVALID}, {BLOCK_INVALID, BLOCK_INVALID}},
michael@0 132 {{BLOCK_4X8, BLOCK_4X4}, {BLOCK_INVALID, BLOCK_INVALID}},
michael@0 133 {{BLOCK_8X4, BLOCK_INVALID}, {BLOCK_4X4, BLOCK_INVALID}},
michael@0 134 {{BLOCK_8X8, BLOCK_8X4}, {BLOCK_4X8, BLOCK_4X4}},
michael@0 135 {{BLOCK_8X16, BLOCK_8X8}, {BLOCK_INVALID, BLOCK_4X8}},
michael@0 136 {{BLOCK_16X8, BLOCK_INVALID}, {BLOCK_8X8, BLOCK_8X4}},
michael@0 137 {{BLOCK_16X16, BLOCK_16X8}, {BLOCK_8X16, BLOCK_8X8}},
michael@0 138 {{BLOCK_16X32, BLOCK_16X16}, {BLOCK_INVALID, BLOCK_8X16}},
michael@0 139 {{BLOCK_32X16, BLOCK_INVALID}, {BLOCK_16X16, BLOCK_16X8}},
michael@0 140 {{BLOCK_32X32, BLOCK_32X16}, {BLOCK_16X32, BLOCK_16X16}},
michael@0 141 {{BLOCK_32X64, BLOCK_32X32}, {BLOCK_INVALID, BLOCK_16X32}},
michael@0 142 {{BLOCK_64X32, BLOCK_INVALID}, {BLOCK_32X32, BLOCK_32X16}},
michael@0 143 {{BLOCK_64X64, BLOCK_64X32}, {BLOCK_32X64, BLOCK_32X32}},
michael@0 144 };
michael@0 145
michael@0 146

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