| /* |
| * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org> |
| * Copyright (C) 2005 Eric Seidel <eric@webkit.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #pragma once |
| |
| #include "FEConvolveMatrix.h" |
| #include "Filter.h" |
| #include "FilterEffect.h" |
| |
| namespace WebCore { |
| |
| class FEGaussianBlur : public FilterEffect { |
| public: |
| static Ref<FEGaussianBlur> create(Filter&, float, float, EdgeModeType); |
| |
| float stdDeviationX() const { return m_stdX; } |
| void setStdDeviationX(float); |
| |
| float stdDeviationY() const { return m_stdY; } |
| void setStdDeviationY(float); |
| |
| EdgeModeType edgeMode() const { return m_edgeMode; } |
| void setEdgeMode(EdgeModeType); |
| |
| static IntSize calculateKernelSize(const Filter&, FloatSize stdDeviation); |
| static IntSize calculateUnscaledKernelSize(FloatSize stdDeviation); |
| static IntSize calculateOutsetSize(FloatSize stdDeviation); |
| |
| private: |
| FEGaussianBlur(Filter&, float, float, EdgeModeType); |
| |
| const char* filterName() const final { return "FEGaussianBlur"; } |
| |
| static const int s_minimalRectDimension = 100 * 100; // Empirical data limit for parallel jobs |
| |
| template<typename Type> |
| friend class ParallelJobs; |
| |
| struct PlatformApplyParameters { |
| FEGaussianBlur* filter; |
| RefPtr<Uint8ClampedArray> ioPixelArray; |
| RefPtr<Uint8ClampedArray> tmpPixelArray; |
| int width; |
| int height; |
| unsigned kernelSizeX; |
| unsigned kernelSizeY; |
| }; |
| |
| void platformApplySoftware() override; |
| |
| void determineAbsolutePaintRect() override; |
| |
| IntOutsets outsets() const override; |
| |
| WTF::TextStream& externalRepresentation(WTF::TextStream&, RepresentationType) const override; |
| |
| static void platformApplyWorker(PlatformApplyParameters*); |
| void platformApply(Uint8ClampedArray& ioBuffer, Uint8ClampedArray& tempBuffer, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize); |
| void platformApplyGeneric(Uint8ClampedArray& ioBuffer, Uint8ClampedArray& tempBuffer, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize); |
| |
| float m_stdX; |
| float m_stdY; |
| EdgeModeType m_edgeMode; |
| }; |
| |
| } // namespace WebCore |
| |