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299 lines
12 KiB
299 lines
12 KiB
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "yuv.h"
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#include "esp_attr.h"
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typedef struct {
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int16_t vY;
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int16_t vVr;
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int16_t vVg;
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int16_t vUg;
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int16_t vUb;
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} yuv_table_row;
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static const yuv_table_row yuv_table[256] = {
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// Y Vr Vg Ug Ub // #
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{ -18, -204, 50, 104, -258 }, // 0
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{ -17, -202, 49, 103, -256 }, // 1
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{ -16, -201, 49, 102, -254 }, // 2
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{ -15, -199, 48, 101, -252 }, // 3
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{ -13, -197, 48, 100, -250 }, // 4
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{ -12, -196, 48, 99, -248 }, // 5
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{ -11, -194, 47, 99, -246 }, // 6
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{ -10, -193, 47, 98, -244 }, // 7
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{ -9, -191, 46, 97, -242 }, // 8
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{ -8, -189, 46, 96, -240 }, // 9
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{ -6, -188, 46, 95, -238 }, // 10
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{ -5, -186, 45, 95, -236 }, // 11
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{ -4, -185, 45, 94, -234 }, // 12
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{ -3, -183, 44, 93, -232 }, // 13
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{ -2, -181, 44, 92, -230 }, // 14
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{ -1, -180, 44, 91, -228 }, // 15
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{ 0, -178, 43, 91, -226 }, // 16
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{ 1, -177, 43, 90, -223 }, // 17
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{ 2, -175, 43, 89, -221 }, // 18
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{ 3, -173, 42, 88, -219 }, // 19
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{ 4, -172, 42, 87, -217 }, // 20
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{ 5, -170, 41, 86, -215 }, // 21
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{ 6, -169, 41, 86, -213 }, // 22
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{ 8, -167, 41, 85, -211 }, // 23
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{ 9, -165, 40, 84, -209 }, // 24
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{ 10, -164, 40, 83, -207 }, // 25
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{ 11, -162, 39, 82, -205 }, // 26
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{ 12, -161, 39, 82, -203 }, // 27
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{ 13, -159, 39, 81, -201 }, // 28
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{ 15, -158, 38, 80, -199 }, // 29
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{ 16, -156, 38, 79, -197 }, // 30
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{ 17, -154, 37, 78, -195 }, // 31
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{ 18, -153, 37, 78, -193 }, // 32
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{ 19, -151, 37, 77, -191 }, // 33
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{ 20, -150, 36, 76, -189 }, // 34
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{ 22, -148, 36, 75, -187 }, // 35
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{ 23, -146, 35, 74, -185 }, // 36
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{ 24, -145, 35, 73, -183 }, // 37
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{ 25, -143, 35, 73, -181 }, // 38
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{ 26, -142, 34, 72, -179 }, // 39
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{ 27, -140, 34, 71, -177 }, // 40
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{ 29, -138, 34, 70, -175 }, // 41
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{ 30, -137, 33, 69, -173 }, // 42
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{ 31, -135, 33, 69, -171 }, // 43
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{ 32, -134, 32, 68, -169 }, // 44
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{ 33, -132, 32, 67, -167 }, // 45
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{ 34, -130, 32, 66, -165 }, // 46
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{ 36, -129, 31, 65, -163 }, // 47
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{ 37, -127, 31, 65, -161 }, // 48
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{ 38, -126, 30, 64, -159 }, // 49
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{ 39, -124, 30, 63, -157 }, // 50
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{ 40, -122, 30, 62, -155 }, // 51
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{ 41, -121, 29, 61, -153 }, // 52
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{ 43, -119, 29, 60, -151 }, // 53
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{ 44, -118, 28, 60, -149 }, // 54
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{ 45, -116, 28, 59, -147 }, // 55
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{ 46, -114, 28, 58, -145 }, // 56
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{ 47, -113, 27, 57, -143 }, // 57
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{ 48, -111, 27, 56, -141 }, // 58
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{ 50, -110, 26, 56, -139 }, // 59
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{ 51, -108, 26, 55, -137 }, // 60
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{ 52, -106, 26, 54, -135 }, // 61
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{ 53, -105, 25, 53, -133 }, // 62
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{ 54, -103, 25, 52, -131 }, // 63
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{ 55, -102, 25, 52, -129 }, // 64
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{ 57, -100, 24, 51, -127 }, // 65
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{ 58, -98, 24, 50, -125 }, // 66
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{ 59, -97, 23, 49, -123 }, // 67
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{ 60, -95, 23, 48, -121 }, // 68
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{ 61, -94, 23, 47, -119 }, // 69
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{ 62, -92, 22, 47, -117 }, // 70
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{ 64, -90, 22, 46, -115 }, // 71
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{ 65, -89, 21, 45, -113 }, // 72
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{ 66, -87, 21, 44, -110 }, // 73
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{ 67, -86, 21, 43, -108 }, // 74
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{ 68, -84, 20, 43, -106 }, // 75
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{ 69, -82, 20, 42, -104 }, // 76
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{ 71, -81, 19, 41, -102 }, // 77
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{ 72, -79, 19, 40, -100 }, // 78
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{ 73, -78, 19, 39, -98 }, // 79
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{ 74, -76, 18, 39, -96 }, // 80
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{ 75, -75, 18, 38, -94 }, // 81
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{ 76, -73, 17, 37, -92 }, // 82
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{ 77, -71, 17, 36, -90 }, // 83
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{ 79, -70, 17, 35, -88 }, // 84
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{ 80, -68, 16, 34, -86 }, // 85
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{ 81, -67, 16, 34, -84 }, // 86
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{ 82, -65, 16, 33, -82 }, // 87
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{ 83, -63, 15, 32, -80 }, // 88
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{ 84, -62, 15, 31, -78 }, // 89
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{ 86, -60, 14, 30, -76 }, // 90
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{ 87, -59, 14, 30, -74 }, // 91
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{ 88, -57, 14, 29, -72 }, // 92
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{ 89, -55, 13, 28, -70 }, // 93
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{ 90, -54, 13, 27, -68 }, // 94
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{ 91, -52, 12, 26, -66 }, // 95
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{ 93, -51, 12, 26, -64 }, // 96
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{ 94, -49, 12, 25, -62 }, // 97
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{ 95, -47, 11, 24, -60 }, // 98
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{ 96, -46, 11, 23, -58 }, // 99
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{ 97, -44, 10, 22, -56 }, // 100
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{ 98, -43, 10, 21, -54 }, // 101
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{ 100, -41, 10, 21, -52 }, // 102
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{ 101, -39, 9, 20, -50 }, // 103
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{ 102, -38, 9, 19, -48 }, // 104
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{ 103, -36, 8, 18, -46 }, // 105
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{ 104, -35, 8, 17, -44 }, // 106
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{ 105, -33, 8, 17, -42 }, // 107
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{ 107, -31, 7, 16, -40 }, // 108
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{ 108, -30, 7, 15, -38 }, // 109
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{ 109, -28, 7, 14, -36 }, // 110
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{ 110, -27, 6, 13, -34 }, // 111
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{ 111, -25, 6, 13, -32 }, // 112
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{ 112, -23, 5, 12, -30 }, // 113
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{ 114, -22, 5, 11, -28 }, // 114
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{ 115, -20, 5, 10, -26 }, // 115
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{ 116, -19, 4, 9, -24 }, // 116
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{ 117, -17, 4, 8, -22 }, // 117
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{ 118, -15, 3, 8, -20 }, // 118
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{ 119, -14, 3, 7, -18 }, // 119
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{ 121, -12, 3, 6, -16 }, // 120
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{ 122, -11, 2, 5, -14 }, // 121
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{ 123, -9, 2, 4, -12 }, // 122
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{ 124, -7, 1, 4, -10 }, // 123
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{ 125, -6, 1, 3, -8 }, // 124
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{ 126, -4, 1, 2, -6 }, // 125
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{ 128, -3, 0, 1, -4 }, // 126
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{ 129, -1, 0, 0, -2 }, // 127
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{ 130, 0, 0, 0, 0 }, // 128
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{ 131, 1, 0, 0, 2 }, // 129
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{ 132, 3, 0, -1, 4 }, // 130
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{ 133, 4, -1, -2, 6 }, // 131
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{ 135, 6, -1, -3, 8 }, // 132
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{ 136, 7, -1, -4, 10 }, // 133
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{ 137, 9, -2, -4, 12 }, // 134
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{ 138, 11, -2, -5, 14 }, // 135
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{ 139, 12, -3, -6, 16 }, // 136
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{ 140, 14, -3, -7, 18 }, // 137
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{ 142, 15, -3, -8, 20 }, // 138
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{ 143, 17, -4, -8, 22 }, // 139
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{ 144, 19, -4, -9, 24 }, // 140
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{ 145, 20, -5, -10, 26 }, // 141
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{ 146, 22, -5, -11, 28 }, // 142
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{ 147, 23, -5, -12, 30 }, // 143
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{ 148, 25, -6, -13, 32 }, // 144
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{ 150, 27, -6, -13, 34 }, // 145
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{ 151, 28, -7, -14, 36 }, // 146
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{ 152, 30, -7, -15, 38 }, // 147
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{ 153, 31, -7, -16, 40 }, // 148
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{ 154, 33, -8, -17, 42 }, // 149
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{ 155, 35, -8, -17, 44 }, // 150
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{ 157, 36, -8, -18, 46 }, // 151
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{ 158, 38, -9, -19, 48 }, // 152
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{ 159, 39, -9, -20, 50 }, // 153
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{ 160, 41, -10, -21, 52 }, // 154
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{ 161, 43, -10, -21, 54 }, // 155
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{ 162, 44, -10, -22, 56 }, // 156
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{ 164, 46, -11, -23, 58 }, // 157
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{ 165, 47, -11, -24, 60 }, // 158
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{ 166, 49, -12, -25, 62 }, // 159
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{ 167, 51, -12, -26, 64 }, // 160
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{ 168, 52, -12, -26, 66 }, // 161
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{ 169, 54, -13, -27, 68 }, // 162
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{ 171, 55, -13, -28, 70 }, // 163
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{ 172, 57, -14, -29, 72 }, // 164
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{ 173, 59, -14, -30, 74 }, // 165
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{ 174, 60, -14, -30, 76 }, // 166
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{ 175, 62, -15, -31, 78 }, // 167
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{ 176, 63, -15, -32, 80 }, // 168
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{ 178, 65, -16, -33, 82 }, // 169
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{ 179, 67, -16, -34, 84 }, // 170
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{ 180, 68, -16, -34, 86 }, // 171
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{ 181, 70, -17, -35, 88 }, // 172
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{ 182, 71, -17, -36, 90 }, // 173
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{ 183, 73, -17, -37, 92 }, // 174
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{ 185, 75, -18, -38, 94 }, // 175
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{ 186, 76, -18, -39, 96 }, // 176
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{ 187, 78, -19, -39, 98 }, // 177
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{ 188, 79, -19, -40, 100 }, // 178
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{ 189, 81, -19, -41, 102 }, // 179
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{ 190, 82, -20, -42, 104 }, // 180
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{ 192, 84, -20, -43, 106 }, // 181
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{ 193, 86, -21, -43, 108 }, // 182
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{ 194, 87, -21, -44, 110 }, // 183
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{ 195, 89, -21, -45, 113 }, // 184
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{ 196, 90, -22, -46, 115 }, // 185
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{ 197, 92, -22, -47, 117 }, // 186
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{ 199, 94, -23, -47, 119 }, // 187
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{ 200, 95, -23, -48, 121 }, // 188
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{ 201, 97, -23, -49, 123 }, // 189
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{ 202, 98, -24, -50, 125 }, // 190
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{ 203, 100, -24, -51, 127 }, // 191
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{ 204, 102, -25, -52, 129 }, // 192
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{ 206, 103, -25, -52, 131 }, // 193
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{ 207, 105, -25, -53, 133 }, // 194
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{ 208, 106, -26, -54, 135 }, // 195
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{ 209, 108, -26, -55, 137 }, // 196
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{ 210, 110, -26, -56, 139 }, // 197
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{ 211, 111, -27, -56, 141 }, // 198
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{ 213, 113, -27, -57, 143 }, // 199
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{ 214, 114, -28, -58, 145 }, // 200
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{ 215, 116, -28, -59, 147 }, // 201
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{ 216, 118, -28, -60, 149 }, // 202
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{ 217, 119, -29, -60, 151 }, // 203
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{ 218, 121, -29, -61, 153 }, // 204
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{ 219, 122, -30, -62, 155 }, // 205
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{ 221, 124, -30, -63, 157 }, // 206
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{ 222, 126, -30, -64, 159 }, // 207
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{ 223, 127, -31, -65, 161 }, // 208
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{ 224, 129, -31, -65, 163 }, // 209
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{ 225, 130, -32, -66, 165 }, // 210
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{ 226, 132, -32, -67, 167 }, // 211
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{ 228, 134, -32, -68, 169 }, // 212
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{ 229, 135, -33, -69, 171 }, // 213
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{ 230, 137, -33, -69, 173 }, // 214
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{ 231, 138, -34, -70, 175 }, // 215
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{ 232, 140, -34, -71, 177 }, // 216
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{ 233, 142, -34, -72, 179 }, // 217
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{ 235, 143, -35, -73, 181 }, // 218
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{ 236, 145, -35, -73, 183 }, // 219
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{ 237, 146, -35, -74, 185 }, // 220
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{ 238, 148, -36, -75, 187 }, // 221
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{ 239, 150, -36, -76, 189 }, // 222
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{ 240, 151, -37, -77, 191 }, // 223
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{ 242, 153, -37, -78, 193 }, // 224
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{ 243, 154, -37, -78, 195 }, // 225
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{ 244, 156, -38, -79, 197 }, // 226
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{ 245, 158, -38, -80, 199 }, // 227
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{ 246, 159, -39, -81, 201 }, // 228
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{ 247, 161, -39, -82, 203 }, // 229
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{ 249, 162, -39, -82, 205 }, // 230
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{ 250, 164, -40, -83, 207 }, // 231
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{ 251, 165, -40, -84, 209 }, // 232
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{ 252, 167, -41, -85, 211 }, // 233
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{ 253, 169, -41, -86, 213 }, // 234
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{ 254, 170, -41, -86, 215 }, // 235
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{ 256, 172, -42, -87, 217 }, // 236
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{ 257, 173, -42, -88, 219 }, // 237
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{ 258, 175, -43, -89, 221 }, // 238
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{ 259, 177, -43, -90, 223 }, // 239
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{ 260, 178, -43, -91, 226 }, // 240
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{ 261, 180, -44, -91, 228 }, // 241
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{ 263, 181, -44, -92, 230 }, // 242
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{ 264, 183, -44, -93, 232 }, // 243
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{ 265, 185, -45, -94, 234 }, // 244
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{ 266, 186, -45, -95, 236 }, // 245
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{ 267, 188, -46, -95, 238 }, // 246
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{ 268, 189, -46, -96, 240 }, // 247
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{ 270, 191, -46, -97, 242 }, // 248
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{ 271, 193, -47, -98, 244 }, // 249
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{ 272, 194, -47, -99, 246 }, // 250
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{ 273, 196, -48, -99, 248 }, // 251
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{ 274, 197, -48, -100, 250 }, // 252
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{ 275, 199, -48, -101, 252 }, // 253
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{ 277, 201, -49, -102, 254 }, // 254
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{ 278, 202, -49, -103, 256 } // 255
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};
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#define YUYV_CONSTRAIN(v) ((v)<0)?0:(((v)>255)?255:(v))
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void IRAM_ATTR yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t *r, uint8_t *g, uint8_t *b)
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{
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int16_t ri, gi, bi;
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ri = yuv_table[y].vY + yuv_table[v].vVr;
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gi = yuv_table[y].vY + yuv_table[u].vUg + yuv_table[v].vVg;
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bi = yuv_table[y].vY + yuv_table[u].vUb;
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*r = YUYV_CONSTRAIN(ri);
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*g = YUYV_CONSTRAIN(gi);
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*b = YUYV_CONSTRAIN(bi);
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}
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