RSTextureView.java revision 684b23513c9137ddc04b06ac05a4b15be06ad2f4 
1/*
2 * Copyright (C) 2011 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.graphics.SurfaceTexture;
25import android.os.Handler;
26import android.os.Message;
27import android.util.AttributeSet;
28import android.util.Log;
29import android.view.TextureView;
30
31/**
32 * The Texture View for a graphics renderscript (RenderScriptGL)
33 * to draw on.
34 *
35 */
36public class RSTextureView extends TextureView implements TextureView.SurfaceTextureListener {
37    private RenderScriptGL mRS;
38    private SurfaceTexture mSurfaceTexture;
39
40    /**
41     * Standard View constructor. In order to render something, you
42     * must call {@link android.opengl.GLSurfaceView#setRenderer} to
43     * register a renderer.
44     */
45    public RSTextureView(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 android.opengl.GLSurfaceView#setRenderer} to
54     * register a renderer.
55     */
56    public RSTextureView(Context context, AttributeSet attrs) {
57        super(context, attrs);
58        init();
59        //Log.v(RenderScript.LOG_TAG, "RSSurfaceView");
60    }
61
62    private void init() {
63        setSurfaceTextureListener(this);
64        //android.util.Log.e("rs", "getSurfaceTextureListerner " + getSurfaceTextureListener());
65    }
66
67    @Override
68    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
69        //Log.e(RenderScript.LOG_TAG, "onSurfaceTextureAvailable");
70        mSurfaceTexture = surface;
71
72        if (mRS != null) {
73            mRS.setSurfaceTexture(mSurfaceTexture, width, height);
74        }
75    }
76
77    @Override
78    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
79        //Log.e(RenderScript.LOG_TAG, "onSurfaceTextureSizeChanged");
80        mSurfaceTexture = surface;
81
82        if (mRS != null) {
83            mRS.setSurfaceTexture(mSurfaceTexture, width, height);
84        }
85    }
86
87    @Override
88    public void onSurfaceTextureDestroyed(SurfaceTexture surface) {
89        //Log.e(RenderScript.LOG_TAG, "onSurfaceTextureDestroyed");
90        mSurfaceTexture = surface;
91
92        if (mRS != null) {
93            mRS.setSurfaceTexture(null, 0, 0);
94        }
95    }
96
97    @Override
98    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
99        //Log.e(RenderScript.LOG_TAG, "onSurfaceTextureUpdated");
100        mSurfaceTexture = surface;
101    }
102
103   /**
104     * Inform the view that the activity is paused. The owner of this view must
105     * call this method when the activity is paused. Calling this method will
106     * pause the rendering thread.
107     * Must not be called before a renderer has been set.
108     */
109    public void pause() {
110        if(mRS != null) {
111            mRS.pause();
112        }
113    }
114
115    /**
116     * Inform the view that the activity is resumed. The owner of this view must
117     * call this method when the activity is resumed. Calling this method will
118     * recreate the OpenGL display and resume the rendering
119     * thread.
120     * Must not be called before a renderer has been set.
121     */
122    public void resume() {
123        if(mRS != null) {
124            mRS.resume();
125        }
126    }
127
128    /**
129     * Create a new RenderScriptGL object and attach it to the
130     * TextureView if present.
131     *
132     *
133     * @param sc The RS surface config to create.
134     *
135     * @return RenderScriptGL The new object created.
136     */
137    public RenderScriptGL createRenderScriptGL(RenderScriptGL.SurfaceConfig sc) {
138        RenderScriptGL rs = new RenderScriptGL(this.getContext(), sc);
139        setRenderScriptGL(rs);
140        if (mSurfaceTexture != null) {
141            mRS.setSurfaceTexture(mSurfaceTexture, getWidth(), getHeight());
142        }
143        return rs;
144    }
145
146    /**
147     * Destroy the RenderScriptGL object associated with this
148     * TextureView.
149     */
150    public void destroyRenderScriptGL() {
151        mRS.destroy();
152        mRS = null;
153    }
154
155    /**
156     * Set a new RenderScriptGL object.  This also will attach the
157     * new object to the TextureView if present.
158     *
159     * @param rs The new RS object.
160     */
161    public void setRenderScriptGL(RenderScriptGL rs) {
162        mRS = rs;
163        if (mSurfaceTexture != null) {
164            mRS.setSurfaceTexture(mSurfaceTexture, getWidth(), getHeight());
165        }
166    }
167
168    /**
169     * Returns the previously set RenderScriptGL object.
170     *
171     * @return RenderScriptGL
172     */
173    public RenderScriptGL getRenderScriptGL() {
174        return mRS;
175    }
176}
177
178