RgbTransform.h

#pragma once

// STL includes
#include <cstdint>

class RgbTransform
{
public:
    RgbTransform();

    RgbTransform(double gammaR, double gammaG, double gammaB, double backlightThreshold, bool backlightColored, uint8_t brightness, uint8_t brightnessCompensation);

    ~RgbTransform();

    double getGammaR() const;

    double getGammaG() const;

    double getGammaB() const;

    void setGamma(double gammaR,double gammaG=-1, double gammaB=-1);

    int getBacklightThreshold() const;

    void setBacklightThreshold(int backlightThreshold);

    bool getBacklightColored() const;

    void setBacklightColored(bool backlightColored);

    bool getBackLightEnabled() const;

    void setBackLightEnabled(bool enable);

    uint8_t getBrightness() const;

    void setBrightness(uint8_t brightness);

    uint8_t getBrightnessCompensation() const;

    void setBrightnessCompensation(uint8_t brightnessCompensation);

    void getBrightnessComponents(uint8_t & rgb, uint8_t & cmy, uint8_t & w );

    void transform(uint8_t & red, uint8_t & green, uint8_t & blue);

private:
    void init(double gammaR, double gammaG, double gammaB, double backlightThreshold, bool backlightColored, uint8_t brightness, uint8_t brightnessCompensation);

    void initializeMapping();   

    void updateBrightnessComponents();

    bool      _backLightEnabled
        , _backlightColored;
    double    _backlightThreshold
        , _sumBrightnessLow;

    double    _gammaR
        , _gammaG
        , _gammaB;
    
    uint8_t   _mappingR[256]
        , _mappingG[256]
        , _mappingB[256];

    uint8_t   _brightness
        , _brightnessCompensation
        , _brightness_rgb
        , _brightness_cmy
        , _brightness_w;
};