SkColorSpace.h

/*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkColorSpace_DEFINED
#define SkColorSpace_DEFINED

#include "SkMatrix44.h"
#include "SkRefCnt.h"

class SkData;

class SK_API SkColorSpace : public SkRefCnt {
public:

    enum Named {
        kUnknown_Named,
        kSRGB_Named,
        kAdobeRGB_Named,
    };

    enum GammaNamed {
        kLinear_GammaNamed,

        kSRGB_GammaNamed,

        k2Dot2Curve_GammaNamed,

        kNonStandard_GammaNamed,

        kInvalid_GammaNamed,
    };

    static sk_sp<SkColorSpace> NewRGB(GammaNamed gammaNamed, const SkMatrix44& toXYZD50);

    static sk_sp<SkColorSpace> NewNamed(Named);

    static sk_sp<SkColorSpace> NewICC(const void*, size_t);

    sk_sp<SkColorSpace> makeLinearGamma();

    GammaNamed gammaNamed() const { return fGammaNamed; }

    const SkMatrix44& xyz() const { return fToXYZD50; }

    bool gammaCloseToSRGB() const {
        return kSRGB_GammaNamed == fGammaNamed || k2Dot2Curve_GammaNamed == fGammaNamed;
    }

    bool gammasAreMatching() const;
    bool gammasAreNamed() const;
    bool gammasAreValues() const;
    bool gammasAreTables() const;
    bool gammasAreParams() const;

    sk_sp<SkData> serialize() const;

    size_t writeToMemory(void* memory) const;

    static sk_sp<SkColorSpace> Deserialize(const void* data, size_t length);

    static bool Equals(const SkColorSpace* src, const SkColorSpace* dst);

protected:
    SkColorSpace(GammaNamed gammaNamed, const SkMatrix44& toXYZD50, Named named);

    const GammaNamed fGammaNamed;
    const SkMatrix44 fToXYZD50;
    const Named      fNamed;
};

#endif