TextureView.java revision 1ac4765e959c79101f64b1279887ed469334c268
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; 1182af3524beb75150d347accc925022daa53b4a789Jamie Gennis private boolean mUpdateSurface; 11958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 1208f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy private SurfaceTexture.OnFrameAvailableListener mUpdateListener; 121aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 1226be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private Canvas mCanvas; 1236be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private int mSaveCount; 1246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 1256be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private final Object[] mNativeWindowLock = new Object[0]; 1266be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy // Used from native code, do not write! 1276be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 1286be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private int mNativeWindow; 1296be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 130aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 131aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 132aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 133aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 134aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 135aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context) { 136aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context); 137aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 138aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 139aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 140aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 141aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 142aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 143aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 144aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 145aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 146aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 147aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs) { 148aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs); 149aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 150aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 151aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 152aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 153aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Creates a new TextureView. 154aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 155aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param context The context to associate this view with. 156aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param attrs The attributes of the XML tag that is inflating the view. 157aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param defStyle The default style to apply to this view. If 0, no style 158aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * will be applied (beyond what is included in the theme). This may 159aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * either be an attribute resource, whose value will be retrieved 160aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * from the current theme, or an explicit style resource. 161aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 162aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @SuppressWarnings({"UnusedDeclaration"}) 163aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public TextureView(Context context, AttributeSet attrs, int defStyle) { 164aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super(context, attrs, defStyle); 165aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy init(); 166aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 167aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 168aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy private void init() { 169aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = new Paint(); 170aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 171aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 172a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy /** 173a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * {@inheritDoc} 174a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy */ 175a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy @Override 176a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy public boolean isOpaque() { 177a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy return mOpaque; 178a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 179a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 180a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy /** 181a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * Indicates whether the content of this TextureView is opaque. The 182a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * content is assumed to be opaque by default. 183a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * 184a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * @param opaque True if the content of this TextureView is opaque, 185a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy * false otherwise 186a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy */ 187a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy public void setOpaque(boolean opaque) { 188a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy if (opaque != mOpaque) { 189a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy mOpaque = opaque; 19058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy updateLayer(); 191a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 192a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 193a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 194aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 195aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected void onAttachedToWindow() { 196aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy super.onAttachedToWindow(); 197aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 198aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (!isHardwareAccelerated()) { 19977a811610f99e21da7f88dafef60d09f345d0506Romain Guy Log.w(LOG_TAG, "A TextureView or a subclass can only be " 200aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy + "used with hardware acceleration enabled."); 201aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 202aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 203aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 204451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy @Override 205451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy protected void onDetachedFromWindow() { 206451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy super.onDetachedFromWindow(); 2071ac4765e959c79101f64b1279887ed469334c268Romain Guy if (mLayer != null && mAttachInfo != null && mAttachInfo.mHardwareRenderer != null) { 2081ac4765e959c79101f64b1279887ed469334c268Romain Guy boolean success = mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 2091ac4765e959c79101f64b1279887ed469334c268Romain Guy @Override 2101ac4765e959c79101f64b1279887ed469334c268Romain Guy public void run() { 2111ac4765e959c79101f64b1279887ed469334c268Romain Guy destroySurface(); 2121ac4765e959c79101f64b1279887ed469334c268Romain Guy } 2131ac4765e959c79101f64b1279887ed469334c268Romain Guy }); 2141ac4765e959c79101f64b1279887ed469334c268Romain Guy 2151ac4765e959c79101f64b1279887ed469334c268Romain Guy if (!success) { 2161ac4765e959c79101f64b1279887ed469334c268Romain Guy Log.w(LOG_TAG, "TextureView was not able to destroy its surface: " + this); 2171ac4765e959c79101f64b1279887ed469334c268Romain Guy } 2181ac4765e959c79101f64b1279887ed469334c268Romain Guy } 21931f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy } 220451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 22131f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy private void destroySurface() { 22280429c458506485904715180d10584092a5cd082Romain Guy if (mLayer != null) { 2232af3524beb75150d347accc925022daa53b4a789Jamie Gennis mSurface.detachFromGLContext(); 2242af3524beb75150d347accc925022daa53b4a789Jamie Gennis 225402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba boolean shouldRelease = true; 226451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 227402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba shouldRelease = mListener.onSurfaceTextureDestroyed(mSurface); 228451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 229451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 2306be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 2316be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nDestroyNativeWindow(); 2326be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 2336be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 2346be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mLayer.destroy(); 235402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba if (shouldRelease) mSurface.release(); 236451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mSurface = null; 237451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mLayer = null; 238451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 239451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 240451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 241aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 242aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * The layer type of a TextureView is ignored since a TextureView is always 243aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * considered to act as a hardware layer. The optional paint supplied to this 244aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * method will however be taken into account when rendering the content of 245aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * this TextureView. 246aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 247aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param layerType The ype of layer to use with this view, must be one of 248aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE}, {@link #LAYER_TYPE_SOFTWARE} or 249aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_HARDWARE} 250aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param paint The paint used to compose the layer. This argument is optional 251aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * and can be null. It is ignored when the layer type is 252aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link #LAYER_TYPE_NONE} 253aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 254aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 255aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setLayerType(int layerType, Paint paint) { 256aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (paint != mLayerPaint) { 257aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mLayerPaint = paint; 258aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy invalidate(); 259aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 260aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 261aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 262aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 263aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Always returns {@link #LAYER_TYPE_HARDWARE}. 264aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 265aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 266aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public int getLayerType() { 267aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return LAYER_TYPE_HARDWARE; 268aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 269aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 27059c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy @Override 27159c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy boolean hasStaticLayer() { 27259c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy return true; 27359c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy } 27459c7f80dd20258cefa1fc4bdd3c9a709a8dd53b8Romain Guy 275aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 276aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Calling this method has no effect. 277aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 278aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 279aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void buildLayer() { 280aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 281aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 282aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 283aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 284aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 285aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 286aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 287aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 288aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 289aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public final void draw(Canvas canvas) { 29058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy applyUpdate(); 291c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias applyTransformMatrix(); 292aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 293aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 294aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 295aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Subclasses of TextureView cannot do their own rendering 296aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * with the {@link Canvas} object. 297aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 298aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param canvas The Canvas to which the View is rendered. 299aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 300aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 301aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy protected final void onDraw(Canvas canvas) { 302aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 303aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 304aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 3058f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onSizeChanged(int w, int h, int oldw, int oldh) { 3068f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onSizeChanged(w, h, oldw, oldh); 3078f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 308e5e0c50f7dfaccc220725c5595080e921ffda1e4Romain Guy nSetDefaultBufferSize(mSurface, getWidth(), getHeight()); 309451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy if (mListener != null) { 310451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureSizeChanged(mSurface, getWidth(), getHeight()); 311451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy } 3128f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3138f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3148f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 3158f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 316a998dff5d49a423aaf7097aa8f96bf5bdc681d25Romain Guy boolean destroyLayer(boolean valid) { 31716260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy return false; 31816260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy } 31916260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy 3201766b0e25de5a66f9d0f6e73a2c342272fcadc71Romain Guy /** 3211766b0e25de5a66f9d0f6e73a2c342272fcadc71Romain Guy * @hide 3221766b0e25de5a66f9d0f6e73a2c342272fcadc71Romain Guy */ 32316260e73f6c1c9dc94acf0d328a3c564426b8711Romain Guy @Override 32431f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy protected void destroyHardwareResources() { 32531f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy super.destroyHardwareResources(); 32631f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy destroySurface(); 32731f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy invalidateParentCaches(); 32831f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy invalidate(true); 32931f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy } 33031f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy 33131f2c2e94656530fbf6282803e62edb47e9a894dRomain Guy @Override 3327e52caf6db5feef2b847cfaa3d13690257122c3aMichael Jurka HardwareLayer getHardwareLayer() { 333aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mLayer == null) { 33458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) { 33558f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy return null; 33658f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 33758f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 338a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy mLayer = mAttachInfo.mHardwareRenderer.createHardwareLayer(mOpaque); 3392af3524beb75150d347accc925022daa53b4a789Jamie Gennis if (!mUpdateSurface) { 3402af3524beb75150d347accc925022daa53b4a789Jamie Gennis // We already have a SurfaceTexture to use, and we will pass it 3412af3524beb75150d347accc925022daa53b4a789Jamie Gennis // to mLayer below. 3422af3524beb75150d347accc925022daa53b4a789Jamie Gennis mSurface = mAttachInfo.mHardwareRenderer.createSurfaceTexture(mLayer); 3432af3524beb75150d347accc925022daa53b4a789Jamie Gennis } 344e5e0c50f7dfaccc220725c5595080e921ffda1e4Romain Guy nSetDefaultBufferSize(mSurface, getWidth(), getHeight()); 3452af3524beb75150d347accc925022daa53b4a789Jamie Gennis nCreateNativeWindow(mSurface); 346aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 3478f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mUpdateListener = new SurfaceTexture.OnFrameAvailableListener() { 348aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy @Override 349aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void onFrameAvailable(SurfaceTexture surfaceTexture) { 350aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // Per SurfaceTexture's documentation, the callback may be invoked 351aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy // from an arbitrary thread 35258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy synchronized (mLock) { 35358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = true; 35458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 3556cb7b46c56449e84434b11eb12f9b8977fcd0398Jeff Brown postInvalidate(); 356aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 3578f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy }; 3588f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 359aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 360aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy if (mListener != null) { 361451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy mListener.onSurfaceTextureAvailable(mSurface, getWidth(), getHeight()); 362aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 363aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 364aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 3652af3524beb75150d347accc925022daa53b4a789Jamie Gennis if (mUpdateSurface) { 3662af3524beb75150d347accc925022daa53b4a789Jamie Gennis // Someone has requested that we use a specific SurfaceTexture, so 3672af3524beb75150d347accc925022daa53b4a789Jamie Gennis // tell mLayer about it and set the SurfaceTexture to use the 3682af3524beb75150d347accc925022daa53b4a789Jamie Gennis // current view size. 3692af3524beb75150d347accc925022daa53b4a789Jamie Gennis mUpdateSurface = false; 3702af3524beb75150d347accc925022daa53b4a789Jamie Gennis mAttachInfo.mHardwareRenderer.setSurfaceTexture(mLayer, mSurface); 3712af3524beb75150d347accc925022daa53b4a789Jamie Gennis nSetDefaultBufferSize(mSurface, getWidth(), getHeight()); 3722af3524beb75150d347accc925022daa53b4a789Jamie Gennis } 3732af3524beb75150d347accc925022daa53b4a789Jamie Gennis 37458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy applyUpdate(); 375c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias applyTransformMatrix(); 376302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 377aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mLayer; 378aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 379aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 3808f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy @Override 3818f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy protected void onVisibilityChanged(View changedView, int visibility) { 3828f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy super.onVisibilityChanged(changedView, visibility); 3838f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 3848f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (mSurface != null) { 3858f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // When the view becomes invisible, stop updating it, it's a waste of CPU 3868f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // To cancel updates, the easiest thing to do is simply to remove the 3878f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy // updates listener 3888f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy if (visibility == VISIBLE) { 3898f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(mUpdateListener); 390a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy updateLayer(); 3918f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } else { 3928f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy mSurface.setOnFrameAvailableListener(null); 3938f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3948f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3958f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy } 3968f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 397a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy private void updateLayer() { 39858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = true; 39958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy invalidate(); 40058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 4012af3524beb75150d347accc925022daa53b4a789Jamie Gennis 40258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy private void applyUpdate() { 40358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mLayer == null) { 404a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy return; 405a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 406a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 40758f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy synchronized (mLock) { 40858f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy if (mUpdateLayer) { 40958f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy mUpdateLayer = false; 41058f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } else { 41158f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy return; 41258f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 41358f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy } 41458f4edb7701bf20925468fa5fd1a06a461ff085bRomain Guy 41502ccac69fd1c0a03c24c5f3ace0ad4bed337b1fdRomain Guy mLayer.update(getWidth(), getHeight(), mOpaque); 416a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 417cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba if (mListener != null) { 418cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba mListener.onSurfaceTextureUpdated(mSurface); 419cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba } 420a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy } 421a9489274d67b540804aafb587a226f7c2ae4464dRomain Guy 422aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 423302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * <p>Sets the transform to associate with this texture view. 424302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * The specified transform applies to the underlying surface 425302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * texture and does not affect the size or position of the view 426302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * itself, only of its content.</p> 427302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 428302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * <p>Some transforms might prevent the content from drawing 429302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * all the pixels contained within this view's bounds. In such 430302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * situations, make sure this texture view is not marked opaque.</p> 431302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 432302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @param transform The transform to apply to the content of 433302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * this view. 434302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 435302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #getTransform(android.graphics.Matrix) 436302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #isOpaque() 437302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #setOpaque(boolean) 438302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy */ 439302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy public void setTransform(Matrix transform) { 440302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy mMatrix.set(transform); 441302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy mMatrixChanged = true; 442c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias invalidateParentIfNeeded(); 443302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 444302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 445302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy /** 446302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * Returns the transform associated with this texture view. 447302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 448302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @param transform The {@link Matrix} in which to copy the current 449302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * transform. Can be null. 450302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 451302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @return The specified matrix if not null or a new {@link Matrix} 452302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * instance otherwise. 453302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * 454302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy * @see #setTransform(android.graphics.Matrix) 455302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy */ 456302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy public Matrix getTransform(Matrix transform) { 457302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy if (transform == null) { 458302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy transform = new Matrix(); 459302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 460302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 461302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy transform.set(mMatrix); 462302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 463302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy return transform; 464302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy } 465302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy 466c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias private void applyTransformMatrix() { 467c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias if (mMatrixChanged) { 468c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias mLayer.setTransform(mMatrix); 469c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias mMatrixChanged = false; 470c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias } 471c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias } 472c01391fb4eb0eef33d142e89e060eac7e75de39dAlexandre Elias 473302a9df1d50373c82923bb84ff665dfce584fb22Romain Guy /** 47477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 47577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 47677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 47777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 47877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 47977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format and its dimensions are the same as this view's.</p> 48077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 48177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 48277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 48377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 484d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs during the copy, an empty bitmap will be returned.</p> 485d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 48677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 48777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or the width <= 0 or the height <= 0 48877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 48977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 49077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 49177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 49277a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 49377a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap() { 49477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(getWidth(), getHeight()); 49577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 49677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 49777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 49877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Returns a {@link android.graphics.Bitmap} representation of the content 49977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * of the associated surface texture. If the surface texture is not available, 50077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * this method returns null.</p> 50177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 50277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>The bitmap returned by this method uses the {@link Bitmap.Config#ARGB_8888} 50377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * pixel format.</p> 50477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 50577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 50677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 50777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 508d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs during the copy, an empty bitmap will be returned.</p> 509d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 51077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param width The width of the bitmap to create 51177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param height The height of the bitmap to create 51277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 51377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return A valid {@link Bitmap.Config#ARGB_8888} bitmap, or null if the surface 51477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture is not available or width is <= 0 or height is <= 0 51577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 51677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 51777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(android.graphics.Bitmap) 51877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 51977a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 52077a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(int width, int height) { 52177a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (isAvailable() && width > 0 && height > 0) { 52277a811610f99e21da7f88dafef60d09f345d0506Romain Guy return getBitmap(Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)); 52377a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 52477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return null; 52577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 52677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 52777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 52877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p>Copies the content of this view's surface texture into the specified 52977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * bitmap. If the surface texture is not available, the copy is not executed. 53077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * The content of the surface texture will be scaled to fit exactly inside 53177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * the specified bitmap.</p> 53277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 53377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * <p><strong>Do not</strong> invoke this method from a drawing method 53477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * ({@link #onDraw(android.graphics.Canvas)} for instance).</p> 53577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 536d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * <p>If an error occurs, the bitmap is left unchanged.</p> 537d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy * 53877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @param bitmap The bitmap to copy the content of the surface texture into, 53977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * cannot be null, all configurations are supported 54077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 54177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @return The bitmap specified as a parameter 54277a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 54377a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 54477a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap(int, int) 54577a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #getBitmap() 546589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * 547589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * @throws IllegalStateException if the hardware rendering context cannot be 548589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy * acquired to capture the bitmap 54977a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 55077a811610f99e21da7f88dafef60d09f345d0506Romain Guy public Bitmap getBitmap(Bitmap bitmap) { 55177a811610f99e21da7f88dafef60d09f345d0506Romain Guy if (bitmap != null && isAvailable()) { 552589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy AttachInfo info = mAttachInfo; 553589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy if (info != null && info.mHardwareRenderer != null && 554589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy info.mHardwareRenderer.isEnabled()) { 555589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy if (!info.mHardwareRenderer.validate()) { 556589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy throw new IllegalStateException("Could not acquire hardware rendering context"); 557589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy } 558589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy } 559589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy 560589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy applyUpdate(); 561589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy applyTransformMatrix(); 562589b0bb6ab81657ba201cbc441a49f85305170bcRomain Guy 56302ccac69fd1c0a03c24c5f3ace0ad4bed337b1fdRomain Guy mLayer.copyInto(bitmap); 56477a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 56577a811610f99e21da7f88dafef60d09f345d0506Romain Guy return bitmap; 56677a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 56777a811610f99e21da7f88dafef60d09f345d0506Romain Guy 56877a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 56977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * Returns true if the {@link SurfaceTexture} associated with this 57077a811610f99e21da7f88dafef60d09f345d0506Romain Guy * TextureView is available for rendering. When this method returns 57177a811610f99e21da7f88dafef60d09f345d0506Romain Guy * true, {@link #getSurfaceTexture()} returns a valid surface texture. 57277a811610f99e21da7f88dafef60d09f345d0506Romain Guy */ 57377a811610f99e21da7f88dafef60d09f345d0506Romain Guy public boolean isAvailable() { 57477a811610f99e21da7f88dafef60d09f345d0506Romain Guy return mSurface != null; 57577a811610f99e21da7f88dafef60d09f345d0506Romain Guy } 57677a811610f99e21da7f88dafef60d09f345d0506Romain Guy 57777a811610f99e21da7f88dafef60d09f345d0506Romain Guy /** 5786be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * <p>Start editing the pixels in the surface. The returned Canvas can be used 5796be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to draw into the surface's bitmap. A null is returned if the surface has 5806be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * not been created or otherwise cannot be edited. You will usually need 5816be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to implement 5826be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * {@link SurfaceTextureListener#onSurfaceTextureAvailable(android.graphics.SurfaceTexture, int, int)} 5836be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to find out when the Surface is available for use.</p> 5846be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5856be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * <p>The content of the Surface is never preserved between unlockCanvas() 5866be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * and lockCanvas(), for this reason, every pixel within the Surface area 5876be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * must be written. The only exception to this rule is when a dirty 5886be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * rectangle is specified, in which case, non-dirty pixels will be 5896be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * preserved.</p> 590462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * 591462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * <p>This method can only be used if the underlying surface is not already 592462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * owned by another producer. For instance, if the TextureView is being used 593462785fa257671fe4905d1d3e6ca27e4a61ee946Romain Guy * to render the camera's preview you cannot invoke this method.</p> 5946be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5956be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @return A Canvas used to draw into the surface. 5966be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 5976be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas(android.graphics.Rect) 5986be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #unlockCanvasAndPost(android.graphics.Canvas) 5996be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 6006be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public Canvas lockCanvas() { 6016be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy return lockCanvas(null); 6026be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6036be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6046be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 6056be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * Just like {@link #lockCanvas()} but allows specification of a dirty 6066be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * rectangle. Every pixel within that rectangle must be written; however 6076be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * pixels outside the dirty rectangle will be preserved by the next call 6086be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * to lockCanvas(). 6096be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6106be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @param dirty Area of the surface that will be modified. 6116be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6126be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @return A Canvas used to draw into the surface. 6136be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6146be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas() 6156be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #unlockCanvasAndPost(android.graphics.Canvas) 6166be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 6176be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public Canvas lockCanvas(Rect dirty) { 6186be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (!isAvailable()) return null; 6196be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6206be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (mCanvas == null) { 6216be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mCanvas = new Canvas(); 6226be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6236be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6246be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 6256be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nLockCanvas(mNativeWindow, mCanvas, dirty); 6266be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6276be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mSaveCount = mCanvas.save(); 6286be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6296be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy return mCanvas; 6306be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6316be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6326be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 6336be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * Finish editing pixels in the surface. After this call, the surface's 6346be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * current pixels will be shown on the screen, but its content is lost, 6356be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * in particular there is no guarantee that the content of the Surface 6366be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * will remain unchanged when lockCanvas() is called again. 6376be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6386be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @param canvas The Canvas previously returned by lockCanvas() 6396be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * 6406be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas() 6416be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy * @see #lockCanvas(android.graphics.Rect) 6426be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy */ 6436be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy public void unlockCanvasAndPost(Canvas canvas) { 6446be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy if (mCanvas != null && canvas == mCanvas) { 6456be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy canvas.restoreToCount(mSaveCount); 6466be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy mSaveCount = 0; 6476be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6486be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy synchronized (mNativeWindowLock) { 6496be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy nUnlockCanvasAndPost(mNativeWindow, mCanvas); 6506be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6516be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6526be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy } 6536be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 6546be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy /** 655aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTexture} used by this view. This method 65677a811610f99e21da7f88dafef60d09f345d0506Romain Guy * may return null if the view is not attached to a window or if the surface 65777a811610f99e21da7f88dafef60d09f345d0506Romain Guy * texture has not been initialized yet. 65877a811610f99e21da7f88dafef60d09f345d0506Romain Guy * 65977a811610f99e21da7f88dafef60d09f345d0506Romain Guy * @see #isAvailable() 660aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 661aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTexture getSurfaceTexture() { 662aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mSurface; 663aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 664aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 665aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 6662af3524beb75150d347accc925022daa53b4a789Jamie Gennis * Set the {@link SurfaceTexture} for this view to use. If a {@link 6672af3524beb75150d347accc925022daa53b4a789Jamie Gennis * SurfaceTexture} is already being used by this view, it is immediately 6682af3524beb75150d347accc925022daa53b4a789Jamie Gennis * released and not be usable any more. The {@link 6692af3524beb75150d347accc925022daa53b4a789Jamie Gennis * SurfaceTextureListener#onSurfaceTextureDestroyed} callback is <b>not</b> 6702af3524beb75150d347accc925022daa53b4a789Jamie Gennis * called. 6712af3524beb75150d347accc925022daa53b4a789Jamie Gennis * 6722af3524beb75150d347accc925022daa53b4a789Jamie Gennis * The {@link SurfaceTexture} object must be detached from all OpenGL ES 6732af3524beb75150d347accc925022daa53b4a789Jamie Gennis * contexts prior to calling this method. 6742af3524beb75150d347accc925022daa53b4a789Jamie Gennis * 6752af3524beb75150d347accc925022daa53b4a789Jamie Gennis * @param surfaceTexture The {@link SurfaceTexture} that the view should use. 6762af3524beb75150d347accc925022daa53b4a789Jamie Gennis * @see SurfaceTexture#detachFromGLContext() 6772af3524beb75150d347accc925022daa53b4a789Jamie Gennis * @hide 6782af3524beb75150d347accc925022daa53b4a789Jamie Gennis */ 6792af3524beb75150d347accc925022daa53b4a789Jamie Gennis public void setSurfaceTexture(SurfaceTexture surfaceTexture) { 6802af3524beb75150d347accc925022daa53b4a789Jamie Gennis if (surfaceTexture == null) { 6812af3524beb75150d347accc925022daa53b4a789Jamie Gennis throw new NullPointerException("surfaceTexture must not be null"); 6822af3524beb75150d347accc925022daa53b4a789Jamie Gennis } 6832af3524beb75150d347accc925022daa53b4a789Jamie Gennis if (mSurface != null) { 6842af3524beb75150d347accc925022daa53b4a789Jamie Gennis mSurface.release(); 6852af3524beb75150d347accc925022daa53b4a789Jamie Gennis } 6862af3524beb75150d347accc925022daa53b4a789Jamie Gennis mSurface = surfaceTexture; 6872af3524beb75150d347accc925022daa53b4a789Jamie Gennis mUpdateSurface = true; 6882af3524beb75150d347accc925022daa53b4a789Jamie Gennis invalidateParentIfNeeded(); 6892af3524beb75150d347accc925022daa53b4a789Jamie Gennis } 6902af3524beb75150d347accc925022daa53b4a789Jamie Gennis 6912af3524beb75150d347accc925022daa53b4a789Jamie Gennis /** 692aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Returns the {@link SurfaceTextureListener} currently associated with this 693aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture view. 694aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 695aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #setSurfaceTextureListener(android.view.TextureView.SurfaceTextureListener) 696aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 697aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 698aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public SurfaceTextureListener getSurfaceTextureListener() { 699aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy return mListener; 700aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 701aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 702aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 703aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Sets the {@link SurfaceTextureListener} used to listen to surface 704aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * texture events. 705aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 706aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see #getSurfaceTextureListener() 707aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @see SurfaceTextureListener 708aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 709aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public void setSurfaceTextureListener(SurfaceTextureListener listener) { 710aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy mListener = listener; 711aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 712aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy 713aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 714aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * This listener can be used to be notified when the surface texture 715aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * associated with this texture view is available. 716aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 717aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy public static interface SurfaceTextureListener { 718aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy /** 719aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * Invoked when a {@link TextureView}'s SurfaceTexture is ready for use. 720aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * 721aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * @param surface The surface returned by 722aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy * {@link android.view.TextureView#getSurfaceTexture()} 723451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param width The width of the surface 724451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param height The height of the surface 725aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy */ 726451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height); 7278f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 7288f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy /** 7298f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * Invoked when the {@link SurfaceTexture}'s buffers size changed. 7308f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * 7318f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param surface The surface returned by 7328f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * {@link android.view.TextureView#getSurfaceTexture()} 7338f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param width The new width of the surface 7348f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy * @param height The new height of the surface 7358f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy */ 7368f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height); 737451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy 738451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy /** 739451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * Invoked when the specified {@link SurfaceTexture} is about to be destroyed. 740402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * If returns true, no rendering should happen inside the surface texture after this method 741402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba * is invoked. If returns false, the client needs to call {@link SurfaceTexture#release()}. 742451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * 743451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy * @param surface The surface about to be destroyed 744451ce44a18e4c48f8a43aa250957f76967a35d31Romain Guy */ 745402f05530352f34d5320c2d23be43c274d97c4e2Grace Kloba public boolean onSurfaceTextureDestroyed(SurfaceTexture surface); 746cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba 747cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba /** 748cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * Invoked when the specified {@link SurfaceTexture} is updated through 749cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * {@link SurfaceTexture#updateTexImage()}. 750cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * 751cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba * @param surface The surface just updated 752cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba */ 753cf559377b750271472aa0a717bf3b7d34abc0b39Grace Kloba public void onSurfaceTextureUpdated(SurfaceTexture surface); 754aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy } 7558f0095cd33558e9cc8a440047908e53b68906f5fRomain Guy 7566be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private native void nCreateNativeWindow(SurfaceTexture surface); 7576be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private native void nDestroyNativeWindow(); 7586be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 759d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy private static native void nSetDefaultBufferSize(SurfaceTexture surfaceTexture, 760d6b2a00dd43257d1498b09175bff63663f6cb861Romain Guy int width, int height); 7616be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy 7626be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private static native void nLockCanvas(int nativeWindow, Canvas canvas, Rect dirty); 7636be3d5561cbeccf0a8257a4acb155657f868e548Romain Guy private static native void nUnlockCanvasAndPost(int nativeWindow, Canvas canvas); 764aa6c24c21c727a196451332448d4e3b11a80be69Romain Guy} 765