ColorSpace.hpp

/*
 *  Copyright 2011-2013 Lukas Jirkovsky
 *
 *  This file is part of FotoSHOCKcore.
 *
 *  FotoSHOCKcore is free software: you can redistribute it and/or modify it
 *  under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, version 3 of the License.
 *
 *  FotoSHOCKcore is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with FotoSHOCKcore.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef COLORSPACE_H
#define COLORSPACE_H

#include <lcms2.h>
#include <string>

namespace FotoSHOCKcore {


class ColorSpace {
public:
    enum Enum {value_ANY, value_SAME,
               value_gray, value_RGB, value_CMY, value_CMYK, value_XYZ, value_Lab, value_YUV, value_HLS, value_HSV};

    friend class ColorSpaceEnum;


    ColorSpace()
    : m_ID(value_RGB), m_requiredBands(3), m_cmsFormatter(COLORSPACE_SH(PT_RGB)) {};
    ColorSpace(const ColorSpace& other) = default;
    ColorSpace& operator=(const ColorSpace& other) = default;

    bool operator==(const ColorSpace& other) const {return m_ID == other.m_ID;};
    bool operator!=(const ColorSpace& other) const {return !(*this == other);};


    constexpr operator Enum() const {return m_ID;};


    constexpr int requiredBands() const {return m_requiredBands;};

    constexpr cmsUInt32Number cmsFormatter() const {return m_cmsFormatter;};
protected:
    constexpr ColorSpace(const Enum v, const unsigned int bands, const cmsUInt32Number formatter)
    : m_ID(v), m_requiredBands(bands), m_cmsFormatter(formatter) {}
private:
    Enum m_ID;
    unsigned int m_requiredBands;
    cmsUInt32Number m_cmsFormatter;
};


class ColorSpaceEnum {
public:
    static constexpr ColorSpace ANY = ColorSpace(ColorSpace::value_ANY,     0, 0);
    static constexpr ColorSpace SAME = ColorSpace(ColorSpace::value_SAME,   0, 0);

    static constexpr ColorSpace gray = ColorSpace(ColorSpace::value_gray,   1, COLORSPACE_SH(PT_GRAY));
    static constexpr ColorSpace RGB = ColorSpace(ColorSpace::value_RGB,     3, COLORSPACE_SH(PT_RGB));
    static constexpr ColorSpace CMY = ColorSpace(ColorSpace::value_CMY,     3, COLORSPACE_SH(PT_CMY));
    static constexpr ColorSpace CMYK = ColorSpace(ColorSpace::value_CMYK,   4, COLORSPACE_SH(PT_CMYK));
    static constexpr ColorSpace XYZ = ColorSpace(ColorSpace::value_XYZ,     3, COLORSPACE_SH(PT_XYZ));
    static constexpr ColorSpace Lab = ColorSpace(ColorSpace::value_Lab,     3, COLORSPACE_SH(PT_Lab));
    static constexpr ColorSpace YUV = ColorSpace(ColorSpace::value_YUV,     3, COLORSPACE_SH(PT_YUV));
    static constexpr ColorSpace HLS = ColorSpace(ColorSpace::value_HLS,     3, COLORSPACE_SH(PT_HLS));
    static constexpr ColorSpace HSV = ColorSpace(ColorSpace::value_HSV,     3, COLORSPACE_SH(PT_HSV));
};

}

#endif