color_correction.hpp

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/*
 * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_COLOR_UTILITY_COLOR_CORRECTION_HPP
#define M5_UNIT_COLOR_UTILITY_COLOR_CORRECTION_HPP
 
#include "../unit/unit_TCS3472x_data.hpp"
#include <cstdint>
 
namespace m5 {
namespace unit {
namespace tcs3472x {
 
struct RGB8 {
    uint8_t r;  
    uint8_t g;  
    uint8_t b;  
 
    inline uint16_t to565() const
    {
        return Data::color565(r, g, b);
    }
    inline uint32_t to888() const
    {
        return Data::color888(r, g, b);
    }
};
 
RGB8 pureHue(const uint8_t r, const uint8_t g, const uint8_t b);
 
RGB8 normalizeBrightness(const uint8_t r, const uint8_t g, const uint8_t b);
 
RGB8 grayscale(const uint8_t r, const uint8_t g, const uint8_t b);
 
enum class ColorName : uint8_t {
    Black,    
    White,    
    Gray,     
    Red,      
    Orange,   
    Yellow,   
    Green,    
    Cyan,     
    Blue,     
    Purple,   
    Magenta,  
    Brown,    
};
 
ColorName nearestColorName(const uint8_t r, const uint8_t g, const uint8_t b);
 
RGB8 colorNameToRGB(const ColorName name);
 
const char* colorNameToString(const ColorName name);
 
}  // namespace tcs3472x
}  // namespace unit
}  // namespace m5
#endif