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/*
* 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 SkColorSpaceXform_DEFINED
#define SkColorSpaceXform_DEFINED
#include "SkColorSpace.h"
#include "SkColorSpace_Base.h"
class SkColorSpaceXform : SkNoncopyable {
public:
/**
* Create an object to handle color space conversions.
*
* @param srcSpace The encoded color space.
* @param dstSpace The destination color space.
*
*/
static std::unique_ptr<SkColorSpaceXform> New(const sk_sp<SkColorSpace>& srcSpace,
const sk_sp<SkColorSpace>& dstSpace);
/**
* Apply the color conversion to a src buffer, storing the output in the dst buffer.
* The src is opaque and stored in RGBA_8888, and the dst is also opaque and stored
* in 8888 platform format.
*/
virtual void xform_RGB1_8888(uint32_t* dst, const uint32_t* src, uint32_t len) const = 0;
virtual ~SkColorSpaceXform() {}
};
class SkSRGBTo2Dot2Xform : public SkColorSpaceXform {
public:
void xform_RGB1_8888(uint32_t* dst, const uint32_t* src, uint32_t len) const override;
private:
SkSRGBTo2Dot2Xform(const SkMatrix44& srcToDst);
float fSrcToDst[12];
friend class SkColorSpaceXform;
};
class Sk2Dot2To2Dot2Xform : public SkColorSpaceXform {
public:
void xform_RGB1_8888(uint32_t* dst, const uint32_t* src, uint32_t len) const override;
private:
Sk2Dot2To2Dot2Xform(const SkMatrix44& srcToDst);
float fSrcToDst[12];
friend class SkColorSpaceXform;
};
/**
* Works for any valid src and dst profiles.
*/
class SkDefaultXform : public SkColorSpaceXform {
public:
void xform_RGB1_8888(uint32_t* dst, const uint32_t* src, uint32_t len) const override;
private:
SkDefaultXform(const sk_sp<SkGammas>& srcGammas, const SkMatrix44& srcToDst,
const sk_sp<SkGammas>& dstGammas);
sk_sp<SkGammas> fSrcGammas;
const SkMatrix44 fSrcToDst;
sk_sp<SkGammas> fDstGammas;
friend class SkColorSpaceXform;
friend class ColorSpaceXformTest;
};
#endif
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