RenderProxy.h revision 19b6bcfd83eb7fb92ebd06d2fec89e308311f1d0 
1/*
2 * Copyright (C) 2013 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 RENDERPROXY_H_
18#define RENDERPROXY_H_
19
20#include "RenderTask.h"
21
22#include <cutils/compiler.h>
23#include <EGL/egl.h>
24#include <SkBitmap.h>
25#include <utils/Condition.h>
26#include <utils/Functor.h>
27#include <utils/Mutex.h>
28#include <utils/StrongPointer.h>
29#include <utils/Vector.h>
30
31namespace android {
32namespace uirenderer {
33
34class DeferredLayerUpdater;
35class DisplayList;
36class Layer;
37class Rect;
38
39namespace renderthread {
40
41class CanvasContext;
42class ErrorChannel;
43class RenderThread;
44class RenderProxyBridge;
45
46/*
47 * RenderProxy is strictly single threaded. All methods must be invoked on the owning
48 * thread. It is important to note that RenderProxy may be deleted while it has
49 * tasks post()'d as a result. Therefore any RenderTask that is post()'d must not
50 * reference RenderProxy or any of its fields. The exception here is that postAndWait()
51 * references RenderProxy fields. This is safe as RenderProxy cannot
52 * be deleted if it is blocked inside a call.
53 */
54class ANDROID_API RenderProxy {
55public:
56    ANDROID_API RenderProxy(bool translucent);
57    ANDROID_API virtual ~RenderProxy();
58
59    ANDROID_API bool initialize(EGLNativeWindowType window);
60    ANDROID_API void updateSurface(EGLNativeWindowType window);
61    ANDROID_API void setup(int width, int height);
62    ANDROID_API void drawDisplayList(DisplayList* displayList,
63            int dirtyLeft, int dirtyTop, int dirtyRight, int dirtyBottom);
64    ANDROID_API void destroyCanvas();
65
66    ANDROID_API void attachFunctor(Functor* functor);
67    ANDROID_API void detachFunctor(Functor* functor);
68
69    ANDROID_API void runWithGlContext(RenderTask* task);
70
71    ANDROID_API DeferredLayerUpdater* createDisplayListLayer(int width, int height);
72    ANDROID_API DeferredLayerUpdater* createTextureLayer();
73    ANDROID_API bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap);
74    ANDROID_API void destroyLayer(DeferredLayerUpdater* layer);
75
76private:
77    RenderThread& mRenderThread;
78    CanvasContext* mContext;
79
80    Mutex mSyncMutex;
81    Condition mSyncCondition;
82
83    Vector<DeferredLayerUpdater*> mLayers;
84
85    void destroyContext();
86
87    MethodInvokeRenderTask* createTask(RunnableMethod method);
88    void post(RenderTask* task);
89    void* postAndWait(MethodInvokeRenderTask* task);
90
91    // Friend class to help with bridging
92    friend class RenderProxyBridge;
93};
94
95} /* namespace renderthread */
96} /* namespace uirenderer */
97} /* namespace android */
98#endif /* RENDERPROXY_H_ */
99