RenderProxy.h revision be34f2f3b340196426bdf558b28951359a4d84fa 
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 DisplayListData;
37class Layer;
38class Rect;
39
40namespace renderthread {
41
42class CanvasContext;
43class ErrorChannel;
44class RenderThread;
45class RenderProxyBridge;
46
47/*
48 * RenderProxy is strictly single threaded. All methods must be invoked on the owning
49 * thread. It is important to note that RenderProxy may be deleted while it has
50 * tasks post()'d as a result. Therefore any RenderTask that is post()'d must not
51 * reference RenderProxy or any of its fields. The exception here is that postAndWait()
52 * references RenderProxy fields. This is safe as RenderProxy cannot
53 * be deleted if it is blocked inside a call.
54 */
55class ANDROID_API RenderProxy {
56public:
57    ANDROID_API RenderProxy(bool translucent);
58    ANDROID_API virtual ~RenderProxy();
59
60    ANDROID_API bool initialize(EGLNativeWindowType window);
61    ANDROID_API void updateSurface(EGLNativeWindowType window);
62    ANDROID_API void setup(int width, int height);
63    ANDROID_API void setDisplayListData(DisplayList* displayList, DisplayListData* newData);
64    ANDROID_API void drawDisplayList(DisplayList* displayList,
65            int dirtyLeft, int dirtyTop, int dirtyRight, int dirtyBottom);
66    ANDROID_API void destroyCanvas();
67
68    ANDROID_API void attachFunctor(Functor* functor);
69    ANDROID_API void detachFunctor(Functor* functor);
70
71    ANDROID_API void runWithGlContext(RenderTask* task);
72
73    ANDROID_API DeferredLayerUpdater* createDisplayListLayer(int width, int height);
74    ANDROID_API DeferredLayerUpdater* createTextureLayer();
75    ANDROID_API bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap);
76    ANDROID_API void destroyLayer(DeferredLayerUpdater* layer);
77
78private:
79    RenderThread& mRenderThread;
80    CanvasContext* mContext;
81
82    Mutex mSyncMutex;
83    Condition mSyncCondition;
84
85    Vector<DeferredLayerUpdater*> mLayers;
86
87    void destroyContext();
88
89    MethodInvokeRenderTask* createTask(RunnableMethod method);
90    void post(RenderTask* task);
91    void* postAndWait(MethodInvokeRenderTask* task);
92
93    // Friend class to help with bridging
94    friend class RenderProxyBridge;
95};
96
97} /* namespace renderthread */
98} /* namespace uirenderer */
99} /* namespace android */
100#endif /* RENDERPROXY_H_ */
101