CanvasContext.h revision f47a594f5250b1914c36423ee6b371f0b8db09d0
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef CANVASCONTEXT_H_ 18#define CANVASCONTEXT_H_ 19 20#include <cutils/compiler.h> 21#include <EGL/egl.h> 22#include <SkBitmap.h> 23#include <utils/Functor.h> 24#include <utils/Vector.h> 25 26#include "../DamageAccumulator.h" 27#include "../DrawProfiler.h" 28#include "../RenderNode.h" 29#include "RenderTask.h" 30#include "RenderThread.h" 31 32#define FUNCTOR_PROCESS_DELAY 4 33 34namespace android { 35namespace uirenderer { 36 37class DeferredLayerUpdater; 38class OpenGLRenderer; 39class Rect; 40class Layer; 41 42namespace renderthread { 43 44class EglManager; 45 46// This per-renderer class manages the bridge between the global EGL context 47// and the render surface. 48class CanvasContext : public IFrameCallback { 49public: 50 CanvasContext(RenderThread& thread, bool translucent, RenderNode* rootRenderNode); 51 virtual ~CanvasContext(); 52 53 bool initialize(ANativeWindow* window); 54 void updateSurface(ANativeWindow* window); 55 void pauseSurface(ANativeWindow* window); 56 void setup(int width, int height, const Vector3& lightCenter, float lightRadius); 57 void setOpaque(bool opaque); 58 void makeCurrent(); 59 void processLayerUpdate(DeferredLayerUpdater* layerUpdater); 60 void prepareTree(TreeInfo& info); 61 void draw(); 62 void destroyCanvasAndSurface(); 63 64 // IFrameCallback, Chroreographer-driven frame callback entry point 65 virtual void doFrame(); 66 67 bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap); 68 69 void destroyHardwareResources(); 70 static void trimMemory(RenderThread& thread, int level); 71 72 static void invokeFunctor(RenderThread& thread, Functor* functor); 73 74 void runWithGlContext(RenderTask* task); 75 76 Layer* createRenderLayer(int width, int height); 77 Layer* createTextureLayer(); 78 79 ANDROID_API static void setTextureAtlas(RenderThread& thread, 80 const sp<GraphicBuffer>& buffer, int64_t* map, size_t mapSize); 81 82 void stopDrawing(); 83 void notifyFramePending(); 84 85 DrawProfiler& profiler() { return mProfiler; } 86 87private: 88 friend class RegisterFrameCallbackTask; 89 90 void setSurface(ANativeWindow* window); 91 void swapBuffers(); 92 void requireSurface(); 93 94 void requireGlContext(); 95 96 RenderThread& mRenderThread; 97 EglManager& mEglManager; 98 sp<ANativeWindow> mNativeWindow; 99 EGLSurface mEglSurface; 100 bool mDirtyRegionsEnabled; 101 102 bool mOpaque; 103 OpenGLRenderer* mCanvas; 104 bool mHaveNewSurface; 105 DamageAccumulator mDamageAccumulator; 106 107 const sp<RenderNode> mRootRenderNode; 108 109 DrawProfiler mProfiler; 110}; 111 112} /* namespace renderthread */ 113} /* namespace uirenderer */ 114} /* namespace android */ 115#endif /* CANVASCONTEXT_H_ */ 116