Line data    Source code

       1             : /*
       2             :  * Copyright 2016 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 SkColorSpaceXform_A2B_DEFINED
       9             : #define SkColorSpaceXform_A2B_DEFINED
      10             : 
      11             : #include "SkColorSpace_Base.h"
      12             : #include "SkColorSpaceXform_Base.h"
      13             : #include "SkRasterPipeline.h"
      14             : 
      15             : #include <forward_list>
      16             : #include <functional>
      17             : #include <vector>
      18             : 
      19             : class SkColorSpace_A2B;
      20             : class SkColorSpace_XYZ;
      21             : 
      22             : struct SkTableTransferFn {
      23             :     const float* fData;
      24             :     int          fSize;
      25             : };
      26             : 
      27           0 : class SkColorSpaceXform_A2B : public SkColorSpaceXform_Base {
      28             : public:
      29             :     bool onApply(ColorFormat dstFormat, void* dst, ColorFormat srcFormat, const void* src,
      30             :                  int count, SkAlphaType alphaType) const override;
      31             : 
      32             : private:
      33             :     SkColorSpaceXform_A2B(SkColorSpace_A2B* srcSpace, SkColorSpace_XYZ* dstSpace);
      34             : 
      35             :     void addTransferFns(const SkColorSpaceTransferFn& fn, int channelCount);
      36             : 
      37             :     void addTransferFn(const SkColorSpaceTransferFn& fn, int channelIndex);
      38             : 
      39             :     void addTableFn(const SkTableTransferFn& table, int channelIndex);
      40             : 
      41             :     void addMatrix(const SkMatrix44& matrix);
      42             : 
      43             :     SkRasterPipeline                             fElementsPipeline;
      44             :     bool                                         fLinearDstGamma;
      45             : 
      46             :     // storage used by the pipeline
      47             :     std::forward_list<SkColorSpaceTransferFn>    fTransferFns;
      48             :     std::forward_list<SkTableTransferFn>         fTableTransferFns;
      49             :     std::forward_list<std::vector<float>>        fMatrices;
      50             :     std::vector<sk_sp<const SkColorLookUpTable>> fCLUTs;
      51             : 
      52             :     // these are here to maintain ownership of tables used in the pipeline
      53             :     std::forward_list<std::vector<float>>        fTableStorage;
      54             :     std::vector<sk_sp<const SkGammas>>           fGammaRefs;
      55             : 
      56             :     friend class SkColorSpaceXform_Base;
      57             : };
      58             : 
      59             : #endif