1 /* 2 * Copyright 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SF_EFFECTS_DALTONIZER_H_ 18 #define SF_EFFECTS_DALTONIZER_H_ 19 20 #include <math/mat4.h> 21 22 namespace android { 23 24 enum class ColorBlindnessType { 25 None, // Disables the Daltonizer 26 Protanomaly, // L (red) cone deficient 27 Deuteranomaly, // M (green) cone deficient (most common) 28 Tritanomaly // S (blue) cone deficient 29 }; 30 31 enum class ColorBlindnessMode { 32 Simulation, 33 Correction 34 }; 35 36 class Daltonizer { 37 public: 38 void setType(ColorBlindnessType type); 39 void setMode(ColorBlindnessMode mode); 40 41 // returns the color transform to apply in the shader 42 const mat4& operator()(); 43 44 private: 45 void update(); 46 47 ColorBlindnessType mType = ColorBlindnessType::None; 48 ColorBlindnessMode mMode = ColorBlindnessMode::Simulation; 49 bool mDirty = true; 50 mat4 mColorTransform; 51 }; 52 53 } /* namespace android */ 54 #endif /* SF_EFFECTS_DALTONIZER_H_ */ 55