1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkColorSpace_New_DEFINED 9 #define SkColorSpace_New_DEFINED 10 11 #include "SkColorSpace.h" 12 #include "SkImageInfo.h" 13 #include "SkRefCnt.h" 14 15 class SkRasterPipeline; 16 17 class SkColorSpace_New final : public SkColorSpace { 18 public: 19 class ICCProfile; // TODO: == SkICC? 20 21 struct TransferFn : public SkRefCnt { 22 virtual ~TransferFn() = default; 23 24 // TODO: one day maybe we'd like to not need this call, 25 // instead using the more active methods below instead. 26 virtual SkColorSpaceTransferFn parameterize() const = 0; 27 28 // Append stages to use this transfer function with SkRasterPipeline-based rendering. 29 virtual void linearizeDst(SkRasterPipeline*) const = 0; 30 virtual void linearizeSrc(SkRasterPipeline*) const = 0; 31 virtual void encodeSrc(SkRasterPipeline*) const = 0; 32 33 // TODO: Ganesh hooks. 34 35 // May return false even when this is equivalent to TransferFn, 36 // but must always be equivalent when this returns true. (No false positives.) 37 // Implemented by default with parameterize(). 38 virtual bool equals(const TransferFn&) const; 39 40 // TODO: ??? 41 // Implemented by default with parameterize(). 42 virtual void updateICCProfile(ICCProfile*) const; 43 44 static sk_sp<TransferFn> MakeLinear(); 45 static sk_sp<TransferFn> MakeSRGB(); 46 static sk_sp<TransferFn> MakeGamma(float); 47 }; 48 49 enum class Blending { Linear, AsEncoded }; 50 51 SkColorSpace_New(sk_sp<TransferFn>, SkMatrix44 toXYZD50, Blending); 52 53 const SkMatrix44& toXYZD50() const { return fToXYZD50; } 54 const SkMatrix44& fromXYZD50() const { return fFromXYZD50; } 55 const TransferFn& transferFn() const { return *fTransferFn; } 56 Blending blending() const { return fBlending; } 57 58 // Transfer-function-related overrides. 59 sk_sp<SkColorSpace> makeLinearGamma() const override; 60 sk_sp<SkColorSpace> makeSRGBGamma() const override; 61 SkGammaNamed onGammaNamed() const override; 62 bool onGammaCloseToSRGB() const override; 63 bool onGammaIsLinear() const override; 64 bool onIsNumericalTransferFn(SkColorSpaceTransferFn*) const override; 65 66 // Gamut-related overrides. 67 const SkMatrix44* onFromXYZD50() const override { return &fFromXYZD50; } 68 const SkMatrix44* onToXYZD50() const override { return &fToXYZD50; } 69 uint32_t onToXYZD50Hash() const override { return fToXYZD50Hash; } 70 71 private: 72 sk_sp<TransferFn> fTransferFn; 73 SkMatrix44 fFromXYZD50; 74 SkMatrix44 fToXYZD50; 75 uint32_t fToXYZD50Hash; 76 Blending fBlending; 77 }; 78 #endif//SkColorSpace_New_DEFINED 79
