132 lines
4.0 KiB
C++
132 lines
4.0 KiB
C++
/*
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* Copyright (c) 2014, The Linux Foundation. All rights reserved.
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* Not a Contribution.
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*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_LAYER_BLUR_H
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#define ANDROID_LAYER_BLUR_H
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include "Layer.h"
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// ---------------------------------------------------------------------------
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namespace android {
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/**
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* Blur layer object.
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* Actual blurring logics are capsulated in libuiblur.so
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*/
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class LayerBlur : public Layer
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{
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public:
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LayerBlur(SurfaceFlinger* flinger, const sp<Client>& client,
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const String8& name, uint32_t w, uint32_t h, uint32_t flags);
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virtual ~LayerBlur();
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virtual const char* getTypeId() const { return "LayerBlur"; }
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virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip,
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bool useIdentityTransform);
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virtual bool isOpaque(const Layer::State& /*s*/) const { return false; }
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virtual bool isSecure() const { return false; }
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virtual bool isFixedSize() const { return true; }
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virtual bool isVisible() const;
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virtual bool isBlurLayer() const { return true; }
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virtual bool setBlurMaskLayer(sp<Layer>& maskLayer);
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virtual bool setBlurMaskSampling(int32_t sampling) { mBlurMaskSampling = sampling; return true; }
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virtual bool setBlurMaskAlphaThreshold(float alpha) { mBlurMaskAlphaThreshold = alpha; return true; }
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private:
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class BlurImpl {
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public:
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BlurImpl();
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~BlurImpl();
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status_t blur(int level, uint32_t inId, size_t inWidth, size_t inheight,
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uint32_t outId, size_t* outWidth, size_t* outHeight);
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protected:
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static status_t initBlurImpl();
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static void closeBlurImpl();
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static void* sLibHandle;
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static bool sUnsupported;
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typedef void* (*initBlurTokenFn)();
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typedef void* (*releaseBlurTokenFn)(void*);
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typedef void* (*blurFn)(void*, int, uint32_t, size_t, size_t, uint32_t, size_t*, size_t*);
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static initBlurTokenFn initBlurToken;
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static releaseBlurTokenFn releaseBlurToken;
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static blurFn doBlur;
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static Mutex sLock;
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private:
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void* mToken;
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};
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BlurImpl mBlurImpl;
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wp<Layer> mBlurMaskLayer;
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int32_t mBlurMaskSampling;
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float mBlurMaskAlphaThreshold;
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uint32_t mLastFrameSequence;
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class FBO {
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public:
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FBO() : fbo(0), width(0), height(0) {}
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int fbo;
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int width;
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int height;
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};
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void initFbo(FBO& fbo, int width, int height, int textureName);
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void releaseFbo(FBO& fbo);
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void ensureFbo(FBO& fbo, int width, int height, int textureName);
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FBO mFboCapture;
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Texture mTextureCapture;
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Texture mTextureBlur;
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FBO mFboMasking;
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Texture mTextureMasking;
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bool captureScreen(const sp<const DisplayDevice>& hw,
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FBO& fbo, Texture& texture, int width, int height);
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void doDrawFinal(const sp<const DisplayDevice>& hw,
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int savedViewportWidth, int savedViewportHeight,
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Rect savedProjectionSourceCrop, bool savedProjectionYSwap,
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Transform::orientation_flags savedRotation, bool useIdentityTransform,
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Texture* maskTexture);
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bool drawMaskLayer(sp<Layer>& maskLayer, const sp<const DisplayDevice>& hw,
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FBO& fbo, int width, int height, int sampling, Texture& texture);
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_LAYER_BLUR_H
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