зеркало из https://github.com/mozilla/gecko-dev.git
49 строки
1.1 KiB
C++
49 строки
1.1 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_CONVOLUTION_FILTER_H_
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#define MOZILLA_GFX_CONVOLUTION_FILTER_H_
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#include "mozilla/UniquePtr.h"
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class SkConvolutionFilter1D;
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namespace mozilla {
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namespace gfx {
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class ConvolutionFilter
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{
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public:
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ConvolutionFilter();
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~ConvolutionFilter();
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int32_t MaxFilter() const;
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int32_t NumValues() const;
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bool GetFilterOffsetAndLength(int32_t aRowIndex, int32_t* aResultOffset, int32_t* aResultLength);
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void ConvolveHorizontally(const uint8_t* aSrc, uint8_t* aDst, bool aHasAlpha);
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void ConvolveVertically(uint8_t* const* aSrc, uint8_t* aDst, int32_t aRowIndex, int32_t aRowSize, bool aHasAlpha);
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enum class ResizeMethod
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{
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BOX,
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TRIANGLE,
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LANCZOS3,
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HAMMING,
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MITCHELL
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};
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bool ComputeResizeFilter(ResizeMethod aResizeMethod, int32_t aSrcSize, int32_t aDstSize);
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private:
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UniquePtr<SkConvolutionFilter1D> mFilter;
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};
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_CONVOLUTION_FILTER_H_ */
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