import android.content.Intent;
import android.content.IntentSender;
import android.graphics.SurfaceTexture;
-import android.os.Handler;
-import android.os.HandlerThread;
import android.os.IBinder;
import android.os.Message;
import android.os.OperationCanceledException;
import dalvik.system.CloseGuard;
import java.lang.ref.WeakReference;
+import java.util.ArrayDeque;
+import java.util.concurrent.Executor;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import com.android.internal.annotations.GuardedBy;
+
/** @hide */
public class ActivityView extends ViewGroup {
private static final int MSG_SET_SURFACE = 1;
- DisplayMetrics mMetrics = new DisplayMetrics();
+ private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
+ private static final int MINIMUM_POOL_SIZE = 1;
+ private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;
+ private static final int KEEP_ALIVE = 1;
+
+ private static final ThreadFactory sThreadFactory = new ThreadFactory() {
+ private final AtomicInteger mCount = new AtomicInteger(1);
+
+ public Thread newThread(Runnable r) {
+ return new Thread(r, "ActivityView #" + mCount.getAndIncrement());
+ }
+ };
+
+ private static final BlockingQueue<Runnable> sPoolWorkQueue =
+ new LinkedBlockingQueue<Runnable>(128);
+
+ /**
+ * An {@link Executor} that can be used to execute tasks in parallel.
+ */
+ private static final Executor sExecutor = new ThreadPoolExecutor(MINIMUM_POOL_SIZE,
+ MAXIMUM_POOL_SIZE, KEEP_ALIVE, TimeUnit.SECONDS, sPoolWorkQueue, sThreadFactory);
+
+
+ private static class SerialExecutor implements Executor {
+ private final ArrayDeque<Runnable> mTasks = new ArrayDeque<Runnable>();
+ private Runnable mActive;
+
+ public synchronized void execute(final Runnable r) {
+ mTasks.offer(new Runnable() {
+ public void run() {
+ try {
+ r.run();
+ } finally {
+ scheduleNext();
+ }
+ }
+ });
+ if (mActive == null) {
+ scheduleNext();
+ }
+ }
+
+ protected synchronized void scheduleNext() {
+ if ((mActive = mTasks.poll()) != null) {
+ sExecutor.execute(mActive);
+ }
+ }
+ }
+
+ private final SerialExecutor mExecutor = new SerialExecutor();
+
+ private final int mDensityDpi;
private final TextureView mTextureView;
+
+ @GuardedBy("mActivityContainerLock")
private ActivityContainerWrapper mActivityContainer;
+ private Object mActivityContainerLock = new Object();
+
private Activity mActivity;
private int mWidth;
private int mHeight;
private int mLastVisibility;
private ActivityViewCallback mActivityViewCallback;
- private HandlerThread mThread = new HandlerThread("ActivityViewThread");
- private Handler mHandler;
public ActivityView(Context context) {
this(context, null);
+ e);
}
- mThread.start();
- mHandler = new Handler(mThread.getLooper()) {
- @Override
- public void handleMessage(Message msg) {
- super.handleMessage(msg);
- if (msg.what == MSG_SET_SURFACE) {
- try {
- mActivityContainer.setSurface((Surface) msg.obj, msg.arg1, msg.arg2,
- mMetrics.densityDpi);
- } catch (RemoteException e) {
- throw new RuntimeException(
- "ActivityView: Unable to set surface of ActivityContainer. " + e);
- }
- }
- }
- };
mTextureView = new TextureView(context);
mTextureView.setSurfaceTextureListener(new ActivityViewSurfaceTextureListener());
addView(mTextureView);
WindowManager wm = (WindowManager)mActivity.getSystemService(Context.WINDOW_SERVICE);
- wm.getDefaultDisplay().getMetrics(mMetrics);
+ DisplayMetrics metrics = new DisplayMetrics();
+ wm.getDefaultDisplay().getMetrics(metrics);
+ mDensityDpi = metrics.densityDpi;
mLastVisibility = getVisibility();
}
@Override
- protected void onVisibilityChanged(View changedView, int visibility) {
+ protected void onVisibilityChanged(View changedView, final int visibility) {
super.onVisibilityChanged(changedView, visibility);
if (mSurface != null && (visibility == View.GONE || mLastVisibility == View.GONE)) {
- Message msg = Message.obtain(mHandler, MSG_SET_SURFACE);
- msg.obj = (visibility == View.GONE) ? null : mSurface;
- msg.arg1 = mWidth;
- msg.arg2 = mHeight;
- mHandler.sendMessage(msg);
+ if (DEBUG) Log.v(TAG, "visibility changed; enqueing runnable");
+ final Surface surface = (visibility == View.GONE) ? null : mSurface;
+ setSurfaceAsync(surface, mWidth, mHeight, mDensityDpi, false);
}
mLastVisibility = visibility;
}
Log.e(TAG, "Duplicate call to release");
return;
}
- mActivityContainer.release();
- mActivityContainer = null;
+ synchronized (mActivityContainerLock) {
+ mActivityContainer.release();
+ mActivityContainer = null;
+ }
if (mSurface != null) {
mSurface.release();
}
mTextureView.setSurfaceTextureListener(null);
-
- mThread.quit();
}
- private void attachToSurfaceWhenReady() {
- final SurfaceTexture surfaceTexture = mTextureView.getSurfaceTexture();
- if (surfaceTexture == null || mSurface != null) {
- // Either not ready to attach, or already attached.
- return;
- }
-
- mSurface = new Surface(surfaceTexture);
- try {
- mActivityContainer.setSurface(mSurface, mWidth, mHeight, mMetrics.densityDpi);
- } catch (RemoteException e) {
- mSurface.release();
- mSurface = null;
- throw new RuntimeException("ActivityView: Unable to create ActivityContainer. " + e);
- }
+ private void setSurfaceAsync(final Surface surface, final int width, final int height,
+ final int densityDpi, final boolean callback) {
+ mExecutor.execute(new Runnable() {
+ public void run() {
+ try {
+ synchronized (mActivityContainerLock) {
+ if (mActivityContainer != null) {
+ mActivityContainer.setSurface(surface, width, height, densityDpi);
+ }
+ }
+ } catch (RemoteException e) {
+ throw new RuntimeException(
+ "ActivityView: Unable to set surface of ActivityContainer. ",
+ e);
+ }
+ if (callback) {
+ post(new Runnable() {
+ @Override
+ public void run() {
+ if (mActivityViewCallback != null) {
+ if (surface != null) {
+ mActivityViewCallback.onSurfaceAvailable(ActivityView.this);
+ } else {
+ mActivityViewCallback.onSurfaceDestroyed(ActivityView.this);
+ }
+ }
+ }
+ });
+ }
+ }
+ });
}
/**
+ height);
mWidth = width;
mHeight = height;
- attachToSurfaceWhenReady();
- if (mActivityViewCallback != null) {
- mActivityViewCallback.onSurfaceAvailable(ActivityView.this);
- }
+ mSurface = new Surface(surfaceTexture);
+ setSurfaceAsync(mSurface, mWidth, mHeight, mDensityDpi, true);
}
@Override
if (DEBUG) Log.d(TAG, "onSurfaceTextureDestroyed");
mSurface.release();
mSurface = null;
- try {
- mActivityContainer.setSurface(null, mWidth, mHeight, mMetrics.densityDpi);
- } catch (RemoteException e) {
- throw new RuntimeException(
- "ActivityView: Unable to set surface of ActivityContainer. " + e);
- }
- if (mActivityViewCallback != null) {
- mActivityViewCallback.onSurfaceDestroyed(ActivityView.this);
- }
+ setSurfaceAsync(null, mWidth, mHeight, mDensityDpi, true);
return true;
}
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