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298 lines
12 KiB
298 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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