TextureView.java revision 77a811610f99e21da7f88dafef60d09f345d0506
1aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy/* 2aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Copyright (C) 2011 The Android Open Source Project 3aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 4aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * you may not use this file except in compliance with the License. 6aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * You may obtain a copy of the License at 7aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 8aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * http://www.apache.org/licenses/LICENSE-2.0 9aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 10aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Unless required by applicable law or agreed to in writing, software 11aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * See the License for the specific language governing permissions and 14aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * limitations under the License. 15aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 16aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 17aa6c24c21c727a196451332448d4e3b11a80be69Romain Guypackage android.view; 18aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 19aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.content.Context; 2077a811610f99e21da7f88dafef60d09f345d0506Romain Guyimport android.graphics.Bitmap; 21aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.graphics.Canvas; 22aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.graphics.Paint; 23aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.graphics.SurfaceTexture; 24aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.util.AttributeSet; 25aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.util.Log; 26aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 27aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy/** 28aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>A TextureView can be used to display a content stream. Such a content 29aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * stream can for instance be a video or an OpenGL scene. The content stream 30aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * can come from the application's process as well as a remote process.</p> 31aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 32aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>TextureView can only be used in a hardware accelerated window. When 33aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * rendered in software, TextureView will draw nothing.</p> 34aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 35aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>Unlike {@link SurfaceView}, TextureView does not create a separate 36aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * window but behaves as a regular View. This key difference allows a 37aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * TextureView to be moved, transformed, animated, etc. For instance, you 38aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * can make a TextureView semi-translucent by calling 39aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <code>myView.setAlpha(0.5f)</code>.</p> 40aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 41aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>Using a TextureView is simple: all you need to do is get its 42aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link SurfaceTexture}. The {@link SurfaceTexture} can then be used to 43aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * render content. The following example demonstrates how to render the 44aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * camera preview into a TextureView:</p> 45aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 46aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <pre> 47aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * public class LiveCameraActivity extends Activity implements TextureView.SurfaceTextureListener { 48aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * private Camera mCamera; 49aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * private TextureView mTextureView; 50aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 51aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * protected void onCreate(Bundle savedInstanceState) { 52aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * super.onCreate(savedInstanceState); 53aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 54aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mTextureView = new TextureView(this); 55aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mTextureView.setSurfaceTextureListener(this); 56aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 57aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * setContentView(mTextureView); 58aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 59aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 60451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { 61aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera = Camera.open(); 62aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 63aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * try { 64aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera.setPreviewTexture(surface); 65aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera.startPreview(); 66aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } catch (IOException ioe) { 67aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * // Something bad happened 68aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 69aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 708f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * 718f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { 728f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * // Ignored, Camera does all the work for us 738f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * } 74451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * 75451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * public void onSurfaceTextureDestroyed(SurfaceTexture surface) { 76451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * mCamera.stopPreview(); 77451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * mCamera.release(); 78451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * } 79aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 80aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * </pre> 81aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 82aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>A TextureView's SurfaceTexture can be obtained either by invoking 83aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #getSurfaceTexture()} or by using a {@link SurfaceTextureListener}. 84aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * It is important to know that a SurfaceTexture is available only after the 85aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * TextureView is attached to a window (and {@link #onAttachedToWindow()} has 86aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * been invoked.) It is therefore highly recommended you use a listener to 87aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * be notified when the SurfaceTexture becomes available.</p> 88aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 89aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceView 90aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTexture 91aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 92aa6c24c21c727a196451332448d4e3b11a80be69Romain Guypublic class TextureView extends View { 9377a811610f99e21da7f88dafef60d09f345d0506Romain Guy private static final String LOG_TAG = "TextureView"; 9477a811610f99e21da7f88dafef60d09f345d0506Romain Guy 95aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private HardwareLayer mLayer; 96aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private SurfaceTexture mSurface; 97aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private SurfaceTextureListener mListener; 98aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 99aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private final Runnable mUpdateLayerAction = new Runnable() { 100aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 101aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void run() { 102aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy updateLayer(); 103aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 104aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy }; 1058f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy private SurfaceTexture.OnFrameAvailableListener mUpdateListener; 106aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 107aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 108aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 109aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 110aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 111aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 112aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context) { 113aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context); 114aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 115aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 116aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 117aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 118aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 119aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 120aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 121aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 122aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 123aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 124aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs) { 125aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs); 126aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 127aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 128aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 129aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 130aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 131aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 132aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 133aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 134aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param defStyle The default style to apply to this view. If 0, no style 135aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * will be applied (beyond what is included in the theme). This may 136aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * either be an attribute resource, whose value will be retrieved 137aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * from the current theme, or an explicit style resource. 138aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 139aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 140aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs, int defStyle) { 141aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs, defStyle); 142aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 143aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 144aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 145aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private void init() { 146aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = new Paint(); 147aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 148aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 149aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 150aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected void onAttachedToWindow() { 151aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super.onAttachedToWindow(); 152aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 153aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (!isHardwareAccelerated()) { 15477a811610f99e21da7f88dafef60d09f345d0506Romain Guy Log.w(LOG_TAG, "A TextureView or a subclass can only be " 155aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy + "used with hardware acceleration enabled."); 156aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 157aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 158aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 159451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy @Override 160451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy protected void onDetachedFromWindow() { 161451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy super.onDetachedFromWindow(); 162451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 163451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (isHardwareAccelerated() && mLayer != null) { 164451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 165451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureDestroyed(mSurface); 166451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 167451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 168451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mLayer.destroy(); 169451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mSurface = null; 170451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mLayer = null; 171451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 172451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 173451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 174aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 175aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * The layer type of a TextureView is ignored since a TextureView is always 176aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * considered to act as a hardware layer. The optional paint supplied to this 177aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * method will however be taken into account when rendering the content of 178aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * this TextureView. 179aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 180aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param layerType The ype of layer to use with this view, must be one of 181aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or 182aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_HARDWARE} 183aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param paint The paint used to compose the layer. This argument is optional 184aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * and can be null. It is ignored when the layer type is 185aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE} 186aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 187aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 188aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setLayerType(int layerType, Paint paint) { 189aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (paint != mLayerPaint) { 190aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = paint; 191aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy invalidate(); 192aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 193aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 194aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 195aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 196aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Always returns {@link #LAYER_TYPE_HARDWARE}. 197aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 198aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 199aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public int getLayerType() { 200aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return LAYER_TYPE_HARDWARE; 201aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 202aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 203aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 204aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Calling this method has no effect. 205aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 206aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 207aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void buildLayer() { 208aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 209aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 210aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 211aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 212aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 213aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 214aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 215aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 216aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 217aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public final void draw(Canvas canvas) { 218aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super.draw(canvas); 219aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 220aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 221aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 222aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 223aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 224aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 225aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 226aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 227aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 228aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected final void onDraw(Canvas canvas) { 229aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 230aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 231aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 2328f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onSizeChanged(int w, int h, int oldw, int oldh) { 2338f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onSizeChanged(w, h, oldw, oldh); 2348f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 2358f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy nSetDefaultBufferSize(mSurface.mSurfaceTexture, getWidth(), getHeight()); 236451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 237451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureSizeChanged(mSurface, getWidth(), getHeight()); 238451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 2398f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2408f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2418f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 2428f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 243aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy HardwareLayer getHardwareLayer() { 244aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) { 245aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return null; 246aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 247aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 248aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mLayer == null) { 249aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayer = mAttachInfo.mHardwareRenderer.createHardwareLayer(); 250aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mSurface = mAttachInfo.mHardwareRenderer.createSuraceTexture(mLayer); 2518f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy nSetDefaultBufferSize(mSurface.mSurfaceTexture, getWidth(), getHeight()); 252aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 2538f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mUpdateListener = new SurfaceTexture.OnFrameAvailableListener() { 254aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 255aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void onFrameAvailable(SurfaceTexture surfaceTexture) { 256aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // Per SurfaceTexture's documentation, the callback may be invoked 257aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // from an arbitrary thread 258aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy post(mUpdateLayerAction); 259aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 2608f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy }; 2618f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 262aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 263aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mListener != null) { 264451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureAvailable(mSurface, getWidth(), getHeight()); 265aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 266aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 267aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 268aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mLayer; 269aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 270aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 2718f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 2728f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onVisibilityChanged(View changedView, int visibility) { 2738f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onVisibilityChanged(changedView, visibility); 2748f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 2758f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 2768f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // When the view becomes invisible, stop updating it, it's a waste of CPU 2778f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // To cancel updates, the easiest thing to do is simply to remove the 2788f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // updates listener 2798f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (visibility == VISIBLE) { 2808f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 2818f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy updateLayer(); 2828f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } else { 2838f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(null); 2848f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2858f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2868f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2878f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 288aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private void updateLayer() { 289aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) { 290aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return; 291aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 292aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 2938f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mAttachInfo.mHardwareRenderer.updateTextureLayer(mLayer, getWidth(), getHeight(), mSurface); 294aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 295aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy invalidate(); 296aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 297aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 298aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 29977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 30077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 30177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 30277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 30377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 30477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format and its dimensions are the same as this view's.</p> 30577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 30677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 30777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 30877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 30977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 31077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or the width <= 0 or the height <= 0 31177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 31277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 31377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 31477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 31577a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 31677a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap() { 31777a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(getWidth(), getHeight()); 31877a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 31977a811610f99e21da7f88dafef60d09f345d0506Romain Guy 32077a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 32177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 32277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 32377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 32477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 32577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 32677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format.</p> 32777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 32877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 32977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 33077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 33177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param width The width of the bitmap to create 33277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param height The height of the bitmap to create 33377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 33477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 33577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or width is <= 0 or height is <= 0 33677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 33777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 33877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 33977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 34077a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 34177a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(int width, int height) { 34277a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (isAvailable() && width > 0 && height > 0) { 34377a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)); 34477a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 34577a811610f99e21da7f88dafef60d09f345d0506Romain Guy return null; 34677a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 34777a811610f99e21da7f88dafef60d09f345d0506Romain Guy 34877a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 34977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Copies the content of this view's surface texture into the specified 35077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * bitmap. If the surface texture is not available, the copy is not executed. 35177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * The content of the surface texture will be scaled to fit exactly inside 35277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * the specified bitmap.</p> 35377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 35477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 35577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 35677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 35777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param bitmap The bitmap to copy the content of the surface texture into, 35877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * cannot be null, all configurations are supported 35977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 36077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return The bitmap specified as a parameter 36177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 36277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 36377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 36477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 36577a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 36677a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(Bitmap bitmap) { 36777a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (bitmap != null && isAvailable()) { 36877a811610f99e21da7f88dafef60d09f345d0506Romain Guy mAttachInfo.mHardwareRenderer.copyLayer(mLayer, bitmap); 36977a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 37077a811610f99e21da7f88dafef60d09f345d0506Romain Guy return bitmap; 37177a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 37277a811610f99e21da7f88dafef60d09f345d0506Romain Guy 37377a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 37477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * Returns true if the {@link SurfaceTexture} associated with this 37577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * TextureView is available for rendering. When this method returns 37677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * true, {@link #getSurfaceTexture()} returns a valid surface texture. 37777a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 37877a811610f99e21da7f88dafef60d09f345d0506Romain Guy public boolean isAvailable() { 37977a811610f99e21da7f88dafef60d09f345d0506Romain Guy return mSurface != null; 38077a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 38177a811610f99e21da7f88dafef60d09f345d0506Romain Guy 38277a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 383aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTexture} used by this view. This method 38477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * may return null if the view is not attached to a window or if the surface 38577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture has not been initialized yet. 38677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 38777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 388aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 389aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTexture getSurfaceTexture() { 390aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mSurface; 391aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 392aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 393aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 394aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTextureListener} currently associated with this 395aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture view. 396aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 397aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #setSurfaceTextureListener(android.view.TextureView.SurfaceTextureListener) 398aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 399aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 400aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTextureListener getSurfaceTextureListener() { 401aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mListener; 402aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 403aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 404aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 405aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Sets the {@link SurfaceTextureListener} used to listen to surface 406aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture events. 407aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 408aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #getSurfaceTextureListener() 409aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 410aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 411aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setSurfaceTextureListener(SurfaceTextureListener listener) { 412aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mListener = listener; 413aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 414aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 415aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 416aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * This listener can be used to be notified when the surface texture 417aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * associated with this texture view is available. 418aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 419aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public static interface SurfaceTextureListener { 420aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 421aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Invoked when a {@link TextureView}'s SurfaceTexture is ready for use. 422aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 423aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param surface The surface returned by 424aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link android.view.TextureView#getSurfaceTexture()} 425451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param width The width of the surface 426451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param height The height of the surface 427aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 428451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height); 4298f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 4308f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy /** 4318f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * Invoked when the {@link SurfaceTexture}'s buffers size changed. 4328f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * 4338f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param surface The surface returned by 4348f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * {@link android.view.TextureView#getSurfaceTexture()} 4358f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param width The new width of the surface 4368f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param height The new height of the surface 4378f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy */ 4388f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height); 439451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 440451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy /** 441451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * Invoked when the specified {@link SurfaceTexture} is about to be destroyed. 442451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * After this method is invoked, no rendering should happen inside the surface 443451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * texture. 444451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * 445451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param surface The surface about to be destroyed 446451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy */ 447451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy public void onSurfaceTextureDestroyed(SurfaceTexture surface); 448aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 4498f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 4508f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy private static native void nSetDefaultBufferSize(int surfaceTexture, int width, int height); 451aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy} 452