TextureView.java revision 31f2c2e94656530fbf6282803e62edb47e9a894d
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; 22302a9df1d50373c82923bb84ff665dfce584fb22Romain Guyimport android.graphics.Matrix; 23aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.graphics.Paint; 246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guyimport android.graphics.Rect; 25aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.graphics.SurfaceTexture; 26aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.util.AttributeSet; 27aa6c24c21c727a196451332448d4e3b11a80be69Romain Guyimport android.util.Log; 28aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 29aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy/** 30aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>A TextureView can be used to display a content stream. Such a content 31aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * stream can for instance be a video or an OpenGL scene. The content stream 32aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * can come from the application's process as well as a remote process.</p> 33aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 34aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>TextureView can only be used in a hardware accelerated window. When 35aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * rendered in software, TextureView will draw nothing.</p> 36aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 37aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>Unlike {@link SurfaceView}, TextureView does not create a separate 38aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * window but behaves as a regular View. This key difference allows a 39aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * TextureView to be moved, transformed, animated, etc. For instance, you 40aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * can make a TextureView semi-translucent by calling 41aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <code>myView.setAlpha(0.5f)</code>.</p> 42aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 43aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>Using a TextureView is simple: all you need to do is get its 44aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link SurfaceTexture}. The {@link SurfaceTexture} can then be used to 45aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * render content. The following example demonstrates how to render the 46aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * camera preview into a TextureView:</p> 47aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 48aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <pre> 49aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * public class LiveCameraActivity extends Activity implements TextureView.SurfaceTextureListener { 50aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * private Camera mCamera; 51aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * private TextureView mTextureView; 52aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 53aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * protected void onCreate(Bundle savedInstanceState) { 54aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * super.onCreate(savedInstanceState); 55aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 56aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mTextureView = new TextureView(this); 57aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mTextureView.setSurfaceTextureListener(this); 58aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 59aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * setContentView(mTextureView); 60aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 61aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 62451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { 63aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera = Camera.open(); 64aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 65aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * try { 66aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera.setPreviewTexture(surface); 67aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * mCamera.startPreview(); 68aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } catch (IOException ioe) { 69aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * // Something bad happened 70aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 71aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 72cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * 738f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { 748f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * // Ignored, Camera does all the work for us 758f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * } 76cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * 77402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { 78451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * mCamera.stopPreview(); 79451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * mCamera.release(); 80402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * return true; 81451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * } 82cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * 83cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * public void onSurfaceTextureUpdated(SurfaceTexture surface) { 8458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy * // Invoked every time there's a new Camera preview frame 85cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * } 86aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * } 87aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * </pre> 88aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 89aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * <p>A TextureView's SurfaceTexture can be obtained either by invoking 90aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #getSurfaceTexture()} or by using a {@link SurfaceTextureListener}. 91aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * It is important to know that a SurfaceTexture is available only after the 92aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * TextureView is attached to a window (and {@link #onAttachedToWindow()} has 93aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * been invoked.) It is therefore highly recommended you use a listener to 94aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * be notified when the SurfaceTexture becomes available.</p> 95aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 96462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * <p>It is important to note that only one producer can use the TextureView. 97462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * For instance, if you use a TextureView to display the camera preview, you 98462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * cannot use {@link #lockCanvas()} to draw onto the TextureView at the same 99462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * time.</p> 100462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * 101aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceView 102aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTexture 103aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 104aa6c24c21c727a196451332448d4e3b11a80be69Romain Guypublic class TextureView extends View { 10577a811610f99e21da7f88dafef60d09f345d0506Romain Guy private static final String LOG_TAG = "TextureView"; 10677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 107aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private HardwareLayer mLayer; 108aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private SurfaceTexture mSurface; 109aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private SurfaceTextureListener mListener; 110aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 111a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy private boolean mOpaque = true; 112c989d867f2580a99cde25fab0e49e445aea33f2fRomain Guy 113302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy private final Matrix mMatrix = new Matrix(); 114302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy private boolean mMatrixChanged; 115302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 11658f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy private final Object[] mLock = new Object[0]; 11758f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy private boolean mUpdateLayer; 11858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 1198f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy private SurfaceTexture.OnFrameAvailableListener mUpdateListener; 120aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 1216be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private Canvas mCanvas; 1226be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private int mSaveCount; 1236be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 1246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private final Object[] mNativeWindowLock = new Object[0]; 1256be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy // Used from native code, do not write! 1266be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 1276be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private int mNativeWindow; 1286be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 129aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 130aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 131aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 132aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 133aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 134aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context) { 135aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context); 136aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 137aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 138aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 139aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 140aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 141aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 142aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 143aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 144aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 145aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 146aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs) { 147aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs); 148aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 149aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 150aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 151aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 152aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 153aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 154aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 155aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 156aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param defStyle The default style to apply to this view. If 0, no style 157aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * will be applied (beyond what is included in the theme). This may 158aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * either be an attribute resource, whose value will be retrieved 159aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * from the current theme, or an explicit style resource. 160aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 161aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 162aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs, int defStyle) { 163aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs, defStyle); 164aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 165aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 166aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 167aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private void init() { 168aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = new Paint(); 169aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 170aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 171a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy /** 172a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * {@inheritDoc} 173a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy */ 174a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy @Override 175a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy public boolean isOpaque() { 176a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy return mOpaque; 177a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 178a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 179a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy /** 180a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * Indicates whether the content of this TextureView is opaque. The 181a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * content is assumed to be opaque by default. 182a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * 183a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * @param opaque True if the content of this TextureView is opaque, 184a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * false otherwise 185a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy */ 186a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy public void setOpaque(boolean opaque) { 187a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy if (opaque != mOpaque) { 188a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy mOpaque = opaque; 18958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy updateLayer(); 190a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 191a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 192a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 193aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 194aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected void onAttachedToWindow() { 195aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super.onAttachedToWindow(); 196aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 197aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (!isHardwareAccelerated()) { 19877a811610f99e21da7f88dafef60d09f345d0506Romain Guy Log.w(LOG_TAG, "A TextureView or a subclass can only be " 199aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy + "used with hardware acceleration enabled."); 200aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 201aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 202aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 203451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy @Override 204451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy protected void onDetachedFromWindow() { 205451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy super.onDetachedFromWindow(); 20631f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy destroySurface(); 20731f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy } 208451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 20931f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy private void destroySurface() { 21080429c458506485904715180d10584092a5cd082Romain Guy if (mLayer != null) { 211402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba boolean shouldRelease = true; 212451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 213402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba shouldRelease = mListener.onSurfaceTextureDestroyed(mSurface); 214451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 215451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 2166be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 2176be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nDestroyNativeWindow(); 2186be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 2196be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 2206be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mLayer.destroy(); 221402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba if (shouldRelease) mSurface.release(); 222451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mSurface = null; 223451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mLayer = null; 224451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 225451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 226451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 227aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 228aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * The layer type of a TextureView is ignored since a TextureView is always 229aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * considered to act as a hardware layer. The optional paint supplied to this 230aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * method will however be taken into account when rendering the content of 231aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * this TextureView. 232aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 233aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param layerType The ype of layer to use with this view, must be one of 234aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or 235aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_HARDWARE} 236aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param paint The paint used to compose the layer. This argument is optional 237aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * and can be null. It is ignored when the layer type is 238aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE} 239aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 240aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 241aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setLayerType(int layerType, Paint paint) { 242aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (paint != mLayerPaint) { 243aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = paint; 244aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy invalidate(); 245aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 246aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 247aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 248aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 249aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Always returns {@link #LAYER_TYPE_HARDWARE}. 250aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 251aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 252aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public int getLayerType() { 253aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return LAYER_TYPE_HARDWARE; 254aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 255aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 25659c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy @Override 25759c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy boolean hasStaticLayer() { 25859c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy return true; 25959c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy } 26059c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy 261aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 262aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Calling this method has no effect. 263aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 264aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 265aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void buildLayer() { 266aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 267aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 268aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 269aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 270aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 271aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 272aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 273aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 274aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 275aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public final void draw(Canvas canvas) { 27658f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy applyUpdate(); 277c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias applyTransformMatrix(); 278aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 279aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 280aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 281aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 282aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 283aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 284aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 285aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 286aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 287aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected final void onDraw(Canvas canvas) { 288aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 289aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 290aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 2918f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onSizeChanged(int w, int h, int oldw, int oldh) { 2928f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onSizeChanged(w, h, oldw, oldh); 2938f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 294e5e0c50f7dfaccc220725c5595080e921ffda1e4Romain Guy nSetDefaultBufferSize(mSurface, getWidth(), getHeight()); 295451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 296451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureSizeChanged(mSurface, getWidth(), getHeight()); 297451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 2988f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 2998f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3008f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 3018f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 30216260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy boolean destroyLayer() { 30316260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy return false; 30416260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy } 30516260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy 30616260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy @Override 30731f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy protected void destroyHardwareResources() { 30831f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy super.destroyHardwareResources(); 30931f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy destroySurface(); 31031f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy invalidateParentCaches(); 31131f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy invalidate(true); 31231f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy } 31331f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy 31431f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy @Override 315aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy HardwareLayer getHardwareLayer() { 316aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mLayer == null) { 31758f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) { 31858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy return null; 31958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 32058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 321a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy mLayer = mAttachInfo.mHardwareRenderer.createHardwareLayer(mOpaque); 322e5e0c50f7dfaccc220725c5595080e921ffda1e4Romain Guy mSurface = mAttachInfo.mHardwareRenderer.createSurfaceTexture(mLayer); 323e5e0c50f7dfaccc220725c5595080e921ffda1e4Romain Guy nSetDefaultBufferSize(mSurface, getWidth(), getHeight()); 3246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nCreateNativeWindow(mSurface); 325aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 3268f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mUpdateListener = new SurfaceTexture.OnFrameAvailableListener() { 327aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 328aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void onFrameAvailable(SurfaceTexture surfaceTexture) { 329aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // Per SurfaceTexture's documentation, the callback may be invoked 330aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // from an arbitrary thread 33158f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy synchronized (mLock) { 33258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = true; 33358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 33458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy postInvalidateDelayed(0); 335aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 3368f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy }; 3378f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 338aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 339aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mListener != null) { 340451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureAvailable(mSurface, getWidth(), getHeight()); 341aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 342aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 343aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 34458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy applyUpdate(); 345c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias applyTransformMatrix(); 346302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 347aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mLayer; 348aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 349aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 3508f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 3518f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onVisibilityChanged(View changedView, int visibility) { 3528f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onVisibilityChanged(changedView, visibility); 3538f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 3548f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 3558f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // When the view becomes invisible, stop updating it, it's a waste of CPU 3568f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // To cancel updates, the easiest thing to do is simply to remove the 3578f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // updates listener 3588f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (visibility == VISIBLE) { 3598f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 360a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy updateLayer(); 3618f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } else { 3628f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(null); 3638f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3648f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3658f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3668f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 367a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy private void updateLayer() { 36858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = true; 36958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy invalidate(); 37058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 37158f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 37258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy private void applyUpdate() { 37358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mLayer == null) { 374a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy return; 375a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 376a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 37758f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy synchronized (mLock) { 37858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mUpdateLayer) { 37958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = false; 38058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } else { 38158f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy return; 38258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 38358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 38458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 38502ccac69fd1c0a03c24c5f3ace0ad4bed337b1fdRomain Guy mLayer.update(getWidth(), getHeight(), mOpaque); 386a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 387cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba if (mListener != null) { 388cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba mListener.onSurfaceTextureUpdated(mSurface); 389cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba } 390a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 391a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 392aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 393302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * <p>Sets the transform to associate with this texture view. 394302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * The specified transform applies to the underlying surface 395302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * texture and does not affect the size or position of the view 396302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * itself, only of its content.</p> 397302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 398302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * <p>Some transforms might prevent the content from drawing 399302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * all the pixels contained within this view's bounds. In such 400302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * situations, make sure this texture view is not marked opaque.</p> 401302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 402302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @param transform The transform to apply to the content of 403302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * this view. 404302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 405302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #getTransform(android.graphics.Matrix) 406302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #isOpaque() 407302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #setOpaque(boolean) 408302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy */ 409302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy public void setTransform(Matrix transform) { 410302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy mMatrix.set(transform); 411302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy mMatrixChanged = true; 412c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias invalidateParentIfNeeded(); 413302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 414302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 415302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy /** 416302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * Returns the transform associated with this texture view. 417302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 418302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @param transform The {@link Matrix} in which to copy the current 419302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * transform. Can be null. 420302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 421302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @return The specified matrix if not null or a new {@link Matrix} 422302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * instance otherwise. 423302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 424302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #setTransform(android.graphics.Matrix) 425302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy */ 426302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy public Matrix getTransform(Matrix transform) { 427302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy if (transform == null) { 428302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy transform = new Matrix(); 429302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 430302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 431302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy transform.set(mMatrix); 432302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 433302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy return transform; 434302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 435302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 436c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias private void applyTransformMatrix() { 437c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias if (mMatrixChanged) { 438c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias mLayer.setTransform(mMatrix); 439c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias mMatrixChanged = false; 440c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias } 441c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias } 442c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias 443302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy /** 44477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 44577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 44677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 44777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 44877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 44977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format and its dimensions are the same as this view's.</p> 45077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 45177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 45277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 45377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 454d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs during the copy, an empty bitmap will be returned.</p> 455d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 45677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 45777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or the width <= 0 or the height <= 0 45877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 45977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 46077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 46177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 46277a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 46377a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap() { 46477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(getWidth(), getHeight()); 46577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 46677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 46777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 46877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 46977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 47077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 47177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 47277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 47377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format.</p> 47477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 47577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 47677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 47777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 478d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs during the copy, an empty bitmap will be returned.</p> 479d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 48077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param width The width of the bitmap to create 48177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param height The height of the bitmap to create 48277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 48377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 48477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or width is <= 0 or height is <= 0 48577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 48677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 48777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 48877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 48977a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 49077a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(int width, int height) { 49177a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (isAvailable() && width > 0 && height > 0) { 49277a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)); 49377a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 49477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return null; 49577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 49677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 49777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 49877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Copies the content of this view's surface texture into the specified 49977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * bitmap. If the surface texture is not available, the copy is not executed. 50077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * The content of the surface texture will be scaled to fit exactly inside 50177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * the specified bitmap.</p> 50277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 50377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 50477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 50577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 506d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs, the bitmap is left unchanged.</p> 507d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 50877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param bitmap The bitmap to copy the content of the surface texture into, 50977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * cannot be null, all configurations are supported 51077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 51177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return The bitmap specified as a parameter 51277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 51377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 51477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 51577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 516589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * 517589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * @throws IllegalStateException if the hardware rendering context cannot be 518589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * acquired to capture the bitmap 51977a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 52077a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(Bitmap bitmap) { 52177a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (bitmap != null && isAvailable()) { 522589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy AttachInfo info = mAttachInfo; 523589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy if (info != null && info.mHardwareRenderer != null && 524589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy info.mHardwareRenderer.isEnabled()) { 525589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy if (!info.mHardwareRenderer.validate()) { 526589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy throw new IllegalStateException("Could not acquire hardware rendering context"); 527589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy } 528589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy } 529589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy 530589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy applyUpdate(); 531589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy applyTransformMatrix(); 532589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy 53302ccac69fd1c0a03c24c5f3ace0ad4bed337b1fdRomain Guy mLayer.copyInto(bitmap); 53477a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 53577a811610f99e21da7f88dafef60d09f345d0506Romain Guy return bitmap; 53677a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 53777a811610f99e21da7f88dafef60d09f345d0506Romain Guy 53877a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 53977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * Returns true if the {@link SurfaceTexture} associated with this 54077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * TextureView is available for rendering. When this method returns 54177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * true, {@link #getSurfaceTexture()} returns a valid surface texture. 54277a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 54377a811610f99e21da7f88dafef60d09f345d0506Romain Guy public boolean isAvailable() { 54477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return mSurface != null; 54577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 54677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 54777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 5486be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * <p>Start editing the pixels in the surface. The returned Canvas can be used 5496be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to draw into the surface's bitmap. A null is returned if the surface has 5506be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * not been created or otherwise cannot be edited. You will usually need 5516be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to implement 5526be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * {@link SurfaceTextureListener#onSurfaceTextureAvailable(android.graphics.SurfaceTexture, int, int)} 5536be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to find out when the Surface is available for use.</p> 5546be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5556be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * <p>The content of the Surface is never preserved between unlockCanvas() 5566be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * and lockCanvas(), for this reason, every pixel within the Surface area 5576be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * must be written. The only exception to this rule is when a dirty 5586be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * rectangle is specified, in which case, non-dirty pixels will be 5596be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * preserved.</p> 560462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * 561462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * <p>This method can only be used if the underlying surface is not already 562462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * owned by another producer. For instance, if the TextureView is being used 563462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * to render the camera's preview you cannot invoke this method.</p> 5646be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5656be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @return A Canvas used to draw into the surface. 5666be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5676be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas(android.graphics.Rect) 5686be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #unlockCanvasAndPost(android.graphics.Canvas) 5696be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 5706be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public Canvas lockCanvas() { 5716be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy return lockCanvas(null); 5726be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 5736be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 5746be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 5756be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * Just like {@link #lockCanvas()} but allows specification of a dirty 5766be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * rectangle. Every pixel within that rectangle must be written; however 5776be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * pixels outside the dirty rectangle will be preserved by the next call 5786be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to lockCanvas(). 5796be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5806be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @param dirty Area of the surface that will be modified. 5816be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 5826be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @return A Canvas used to draw into the surface. 5836be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5846be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas() 5856be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #unlockCanvasAndPost(android.graphics.Canvas) 5866be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 5876be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public Canvas lockCanvas(Rect dirty) { 5886be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (!isAvailable()) return null; 5896be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 5906be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (mCanvas == null) { 5916be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mCanvas = new Canvas(); 5926be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 5936be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 5946be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 5956be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nLockCanvas(mNativeWindow, mCanvas, dirty); 5966be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 5976be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mSaveCount = mCanvas.save(); 5986be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 5996be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy return mCanvas; 6006be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6016be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6026be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 6036be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * Finish editing pixels in the surface. After this call, the surface's 6046be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * current pixels will be shown on the screen, but its content is lost, 6056be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * in particular there is no guarantee that the content of the Surface 6066be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * will remain unchanged when lockCanvas() is called again. 6076be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6086be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @param canvas The Canvas previously returned by lockCanvas() 6096be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6106be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas() 6116be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas(android.graphics.Rect) 6126be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 6136be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public void unlockCanvasAndPost(Canvas canvas) { 6146be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (mCanvas != null && canvas == mCanvas) { 6156be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy canvas.restoreToCount(mSaveCount); 6166be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mSaveCount = 0; 6176be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6186be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 6196be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nUnlockCanvasAndPost(mNativeWindow, mCanvas); 6206be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6216be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6226be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6236be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 625aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTexture} used by this view. This method 62677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * may return null if the view is not attached to a window or if the surface 62777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture has not been initialized yet. 62877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 62977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 630aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 631aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTexture getSurfaceTexture() { 632aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mSurface; 633aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 634aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 635aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 636aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTextureListener} currently associated with this 637aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture view. 638aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 639aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #setSurfaceTextureListener(android.view.TextureView.SurfaceTextureListener) 640aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 641aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 642aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTextureListener getSurfaceTextureListener() { 643aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mListener; 644aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 645aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 646aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 647aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Sets the {@link SurfaceTextureListener} used to listen to surface 648aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture events. 649aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 650aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #getSurfaceTextureListener() 651aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 652aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 653aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setSurfaceTextureListener(SurfaceTextureListener listener) { 654aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mListener = listener; 655aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 656aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 657aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 658aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * This listener can be used to be notified when the surface texture 659aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * associated with this texture view is available. 660aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 661aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public static interface SurfaceTextureListener { 662aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 663aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Invoked when a {@link TextureView}'s SurfaceTexture is ready for use. 664aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 665aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param surface The surface returned by 666aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link android.view.TextureView#getSurfaceTexture()} 667451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param width The width of the surface 668451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param height The height of the surface 669aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 670451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height); 6718f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 6728f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy /** 6738f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * Invoked when the {@link SurfaceTexture}'s buffers size changed. 6748f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * 6758f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param surface The surface returned by 6768f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * {@link android.view.TextureView#getSurfaceTexture()} 6778f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param width The new width of the surface 6788f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param height The new height of the surface 6798f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy */ 6808f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height); 681451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 682451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy /** 683451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * Invoked when the specified {@link SurfaceTexture} is about to be destroyed. 684402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * If returns true, no rendering should happen inside the surface texture after this method 685402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * is invoked. If returns false, the client needs to call {@link SurfaceTexture#release()}. 686451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * 687451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param surface The surface about to be destroyed 688451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy */ 689402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba public boolean onSurfaceTextureDestroyed(SurfaceTexture surface); 690cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba 691cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba /** 692cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * Invoked when the specified {@link SurfaceTexture} is updated through 693cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * {@link SurfaceTexture#updateTexImage()}. 694cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * 695cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * @param surface The surface just updated 696cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba */ 697cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba public void onSurfaceTextureUpdated(SurfaceTexture surface); 698aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 6998f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 7006be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private native void nCreateNativeWindow(SurfaceTexture surface); 7016be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private native void nDestroyNativeWindow(); 7026be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 703d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy private static native void nSetDefaultBufferSize(SurfaceTexture surfaceTexture, 704d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy int width, int height); 7056be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 7066be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private static native void nLockCanvas(int nativeWindow, Canvas canvas, Rect dirty); 7076be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private static native void nUnlockCanvasAndPost(int nativeWindow, Canvas canvas); 708aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy} 709