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 SkColorMatrixFilter_DEFINED
       9             : #define SkColorMatrixFilter_DEFINED
      10             : 
      11             : #include "SkColorFilter.h"
      12             : 
      13           0 : class SK_API SkColorMatrixFilterRowMajor255 : public SkColorFilter {
      14             : public:
      15           0 :     SkColorMatrixFilterRowMajor255() {}
      16             :     explicit SkColorMatrixFilterRowMajor255(const SkScalar array[20]);
      17             : 
      18             :     /** Creates a color matrix filter that returns the same value in all four channels. */
      19             :     static sk_sp<SkColorFilter> MakeSingleChannelOutput(const SkScalar row[5]);
      20             : 
      21             :     void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const override;
      22             :     void filterSpan4f(const SkPM4f src[], int count, SkPM4f[]) const override;
      23             :     uint32_t getFlags() const override;
      24             :     bool asColorMatrix(SkScalar matrix[20]) const override;
      25             :     sk_sp<SkColorFilter> makeComposed(sk_sp<SkColorFilter>) const override;
      26             : 
      27             : #if SK_SUPPORT_GPU
      28             :     sk_sp<GrFragmentProcessor> asFragmentProcessor(GrContext*, SkColorSpace*) const override;
      29             : #endif
      30             : 
      31             :     SK_TO_STRING_OVERRIDE()
      32             : 
      33           0 :     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter)
      34             : 
      35             : protected:
      36             :     void flatten(SkWriteBuffer&) const override;
      37             : 
      38             : private:
      39             :     bool onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*,
      40             :                         bool shaderIsOpaque) const override;
      41             : 
      42             :     SkScalar        fMatrix[20];
      43             :     float           fTranspose[20]; // for Sk4s
      44             :     uint32_t        fFlags;
      45             : 
      46             :     void initState();
      47             : 
      48             :     typedef SkColorFilter INHERITED;
      49             : };
      50             : 
      51             : #endif