RSSurfaceView.java revision 5fda65f182231b0e9ad61b1a6803c7603e29344f 
1/*
2 * Copyright (C) 2008 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
17package android.renderscript;
18
19import java.io.Writer;
20import java.util.ArrayList;
21import java.util.concurrent.Semaphore;
22
23import android.content.Context;
24import android.os.Handler;
25import android.os.Message;
26import android.util.AttributeSet;
27import android.util.Log;
28import android.util.Log;
29import android.view.Surface;
30import android.view.SurfaceHolder;
31import android.view.SurfaceView;
32
33/**
34 * @hide
35 *
36 **/
37public class RSSurfaceView extends SurfaceView implements SurfaceHolder.Callback {
38    private SurfaceHolder mSurfaceHolder;
39    private RenderScript mRS;
40
41    /**
42     * Standard View constructor. In order to render something, you
43     * must call {@link #setRenderer} to register a renderer.
44     */
45    public RSSurfaceView(Context context) {
46        super(context);
47        init();
48        Log.v(RenderScript.LOG_TAG, "RSSurfaceView");
49    }
50
51    /**
52     * Standard View constructor. In order to render something, you
53     * must call {@link #setRenderer} to register a renderer.
54     */
55    public RSSurfaceView(Context context, AttributeSet attrs) {
56        super(context, attrs);
57        init();
58        Log.v(RenderScript.LOG_TAG, "RSSurfaceView");
59    }
60
61    private void init() {
62        // Install a SurfaceHolder.Callback so we get notified when the
63        // underlying surface is created and destroyed
64        SurfaceHolder holder = getHolder();
65        holder.addCallback(this);
66    }
67
68    /**
69     * This method is part of the SurfaceHolder.Callback interface, and is
70     * not normally called or subclassed by clients of RSSurfaceView.
71     */
72    public void surfaceCreated(SurfaceHolder holder) {
73        Log.v(RenderScript.LOG_TAG, "surfaceCreated");
74        mSurfaceHolder = holder;
75    }
76
77    /**
78     * This method is part of the SurfaceHolder.Callback interface, and is
79     * not normally called or subclassed by clients of RSSurfaceView.
80     */
81    public void surfaceDestroyed(SurfaceHolder holder) {
82        // Surface will be destroyed when we return
83        Log.v(RenderScript.LOG_TAG, "surfaceDestroyed");
84    }
85
86    /**
87     * This method is part of the SurfaceHolder.Callback interface, and is
88     * not normally called or subclassed by clients of RSSurfaceView.
89     */
90    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
91        Log.v(RenderScript.LOG_TAG, "surfaceChanged");
92    }
93
94    /**
95     * Inform the view that the activity is paused. The owner of this view must
96     * call this method when the activity is paused. Calling this method will
97     * pause the rendering thread.
98     * Must not be called before a renderer has been set.
99     */
100    public void onPause() {
101        if(mRS != null) {
102            mRS.pause();
103        }
104        Log.v(RenderScript.LOG_TAG, "onPause");
105    }
106
107    /**
108     * Inform the view that the activity is resumed. The owner of this view must
109     * call this method when the activity is resumed. Calling this method will
110     * recreate the OpenGL display and resume the rendering
111     * thread.
112     * Must not be called before a renderer has been set.
113     */
114    public void onResume() {
115        if(mRS != null) {
116            mRS.resume();
117        }
118        Log.v(RenderScript.LOG_TAG, "onResume");
119    }
120
121    /**
122     * Queue a runnable to be run on the GL rendering thread. This can be used
123     * to communicate with the Renderer on the rendering thread.
124     * Must not be called before a renderer has been set.
125     * @param r the runnable to be run on the GL rendering thread.
126     */
127    public void queueEvent(Runnable r) {
128        Log.v(RenderScript.LOG_TAG, "queueEvent");
129    }
130
131    /**
132     * This method is used as part of the View class and is not normally
133     * called or subclassed by clients of RSSurfaceView.
134     * Must not be called before a renderer has been set.
135     */
136    @Override
137    protected void onDetachedFromWindow() {
138        super.onDetachedFromWindow();
139    }
140
141    // ----------------------------------------------------------------------
142
143    public RenderScript createRenderScript(boolean useDepth, boolean forceSW) {
144        Surface sur = null;
145        while ((sur == null) || (mSurfaceHolder == null)) {
146            sur = getHolder().getSurface();
147        }
148        mRS = new RenderScript(sur, useDepth, forceSW);
149        return mRS;
150    }
151
152    public RenderScript createRenderScript(boolean useDepth) {
153        return createRenderScript(useDepth, false);
154    }
155
156    public void destroyRenderScript() {
157        mRS.destroy();
158        mRS = null;
159    }
160}
161
162