142 lines
3.7 KiB
C++
142 lines
3.7 KiB
C++
#pragma once
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// STL includes
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#include <cstdint>
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///
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/// Color transformation to adjust the saturation and value of a RGB color value
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///
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class RgbTransform
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{
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public:
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///
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/// Default constructor
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///
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RgbTransform();
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///
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/// Constructor
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///
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/// @param gammaR The used red gamma
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/// @param gammaG The used green gamma
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/// @param gammab The used blue gamma
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/// @param backlightThreshold The used lower brightness
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/// @param backlightColored use color in backlight
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/// @param brightnessHigh The used higher brightness
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///
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RgbTransform(double gammaR, double gammaG, double gammaB, double backlightThreshold, bool backlightColored, uint8_t brightness, uint8_t brightnessCompensation);
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///
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/// Destructor
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///
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~RgbTransform();
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/// @return The current red gamma value
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double getGammaR() const;
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/// @return The current green gamma value
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double getGammaG() const;
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/// @return The current blue gamma value
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double getGammaB() const;
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/// @param gammaR New red gamma value
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/// @param gammaG New green gamma value
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/// @param gammaB New blue gamma value
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void setGamma(double gammaR,double gammaG=-1, double gammaB=-1);
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/// @return The current lower brightness
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int getBacklightThreshold() const;
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/// @param backlightThreshold New lower brightness
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void setBacklightThreshold(int backlightThreshold);
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/// @return The current state
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bool getBacklightColored() const;
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/// @param backlightColored en/disable colored backlight
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void setBacklightColored(bool backlightColored);
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/// @return return state of backlight
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bool getBackLightEnabled() const;
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/// @param enable en/disable backlight
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void setBackLightEnabled(bool enable);
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/// @return The current brightness
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uint8_t getBrightness() const;
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/// @param brightness New brightness
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void setBrightness(uint8_t brightness);
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/// @return The current brightnessCompensation value
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uint8_t getBrightnessCompensation() const;
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/// @param brightnessCompensation new brightnessCompensation
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void setBrightnessCompensation(uint8_t brightnessCompensation);
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///
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/// get component values of brightness for compensated brightness
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///
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/// @param rgb the rgb component
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/// @param cmy the cyan magenta yellow component
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/// @param w the white component
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///
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/// @note The values are updated in place.
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///
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void getBrightnessComponents(uint8_t & rgb, uint8_t & cmy, uint8_t & w );
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///
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/// Apply the transform the the given RGB values.
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///
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/// @param red The red color component
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/// @param green The green color component
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/// @param blue The blue color component
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///
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/// @note The values are updated in place.
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///
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void transform(uint8_t & red, uint8_t & green, uint8_t & blue);
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private:
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///
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/// init
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///
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/// @param gammaR The used red gamma
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/// @param gammaG The used green gamma
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/// @param gammab The used blue gamma
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/// @param backlightThreshold The used lower brightness
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/// @param backlightColored en/disable color in backlight
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/// @param brightness The used brightness
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/// @param brightnessCompensation The used brightness compensation
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///
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void init(double gammaR, double gammaG, double gammaB, double backlightThreshold, bool backlightColored, uint8_t brightness, uint8_t brightnessCompensation);
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/// (re)-initilize the color mapping
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void initializeMapping(); /// The saturation gain
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void updateBrightnessComponents();
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/// backlight variables
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bool _backLightEnabled
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, _backlightColored;
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double _backlightThreshold
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, _sumBrightnessLow;
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/// gamma variables
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double _gammaR
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, _gammaG
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, _gammaB;
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/// The mapping from input color to output color
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uint8_t _mappingR[256]
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, _mappingG[256]
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, _mappingB[256];
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/// brightness variables
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uint8_t _brightness
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, _brightnessCompensation
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, _brightness_rgb
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, _brightness_cmy
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, _brightness_w;
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};
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