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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_A2B_DEFINED
#define SkColorSpaceXform_A2B_DEFINED
#include "SkColorSpace_Base.h"
#include "SkColorSpaceXform_Base.h"
#include "SkRasterPipeline.h"
#include <forward_list>
#include <functional>
#include <vector>
class SkColorSpace_A2B;
class SkColorSpace_XYZ;
class SkColorSpaceXform_A2B : public SkColorSpaceXform_Base {
public:
bool onApply(ColorFormat dstFormat, void* dst, ColorFormat srcFormat, const void* src,
int count, SkAlphaType alphaType) const override;
private:
SkColorSpaceXform_A2B(SkColorSpace_A2B* srcSpace, SkColorSpace_XYZ* dstSpace);
enum Channels {
kRGB_Channels = -1,
kR_Channels = 0,
kG_Channels = 1,
kB_Channels = 2
};
void addGamma(std::function<float(float)> fn, Channels channels);
void addMatrix(const SkMatrix44& matrix);
SkRasterPipeline fElementsPipeline;
bool fLinearDstGamma;
// storage used by the pipeline
std::forward_list<std::function<float(float)>> fGammaFunctions;
std::forward_list<std::vector<float>> fMatrices;
std::forward_list<std::vector<float>> fGammaTables;
std::vector<sk_sp<const SkColorLookUpTable>> fCLUTs;
// these are here to maintain ownership of tables used in the pipeline
std::vector<sk_sp<const SkGammas>> fGammaRefs;
friend class SkColorSpaceXform;
};
#endif
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