зеркало из https://github.com/mozilla/gecko-dev.git
49 строки
1.4 KiB
C++
49 строки
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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 final {
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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,
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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,
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int32_t aRowIndex, int32_t aRowSize, bool aHasAlpha);
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enum class ResizeMethod { BOX, TRIANGLE, LANCZOS3, HAMMING, MITCHELL };
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bool ComputeResizeFilter(ResizeMethod aResizeMethod, int32_t aSrcSize,
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int32_t aDstSize);
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static inline size_t PadBytesForSIMD(size_t aBytes) {
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return (aBytes + 31) & ~31;
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}
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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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