Add SDK 29 sources.
Test: N/A
Change-Id: Iedb7a31029e003928eb16f7e69ed147e72bb6235
diff --git a/android/view/DisplayEventReceiver.java b/android/view/DisplayEventReceiver.java
new file mode 100644
index 0000000..60daddd
--- /dev/null
+++ b/android/view/DisplayEventReceiver.java
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.view;
+
+import android.annotation.UnsupportedAppUsage;
+import android.os.Looper;
+import android.os.MessageQueue;
+import android.util.Log;
+
+import dalvik.annotation.optimization.FastNative;
+import dalvik.system.CloseGuard;
+
+import java.lang.ref.WeakReference;
+
+/**
+ * Provides a low-level mechanism for an application to receive display events
+ * such as vertical sync.
+ *
+ * The display event receive is NOT thread safe. Moreover, its methods must only
+ * be called on the Looper thread to which it is attached.
+ *
+ * @hide
+ */
+public abstract class DisplayEventReceiver {
+
+ /**
+ * When retrieving vsync events, this specifies that the vsync event should happen at the normal
+ * vsync-app tick.
+ * <p>
+ * Needs to be kept in sync with frameworks/native/include/gui/ISurfaceComposer.h
+ */
+ public static final int VSYNC_SOURCE_APP = 0;
+
+ /**
+ * When retrieving vsync events, this specifies that the vsync event should happen whenever
+ * Surface Flinger is processing a frame.
+ * <p>
+ * Needs to be kept in sync with frameworks/native/include/gui/ISurfaceComposer.h
+ */
+ public static final int VSYNC_SOURCE_SURFACE_FLINGER = 1;
+
+ private static final String TAG = "DisplayEventReceiver";
+
+ private final CloseGuard mCloseGuard = CloseGuard.get();
+
+ @UnsupportedAppUsage
+ private long mReceiverPtr;
+
+ // We keep a reference message queue object here so that it is not
+ // GC'd while the native peer of the receiver is using them.
+ private MessageQueue mMessageQueue;
+
+ private static native long nativeInit(WeakReference<DisplayEventReceiver> receiver,
+ MessageQueue messageQueue, int vsyncSource);
+ private static native void nativeDispose(long receiverPtr);
+ @FastNative
+ private static native void nativeScheduleVsync(long receiverPtr);
+
+ /**
+ * Creates a display event receiver.
+ *
+ * @param looper The looper to use when invoking callbacks.
+ */
+ @UnsupportedAppUsage
+ public DisplayEventReceiver(Looper looper) {
+ this(looper, VSYNC_SOURCE_APP);
+ }
+
+ /**
+ * Creates a display event receiver.
+ *
+ * @param looper The looper to use when invoking callbacks.
+ * @param vsyncSource The source of the vsync tick. Must be on of the VSYNC_SOURCE_* values.
+ */
+ public DisplayEventReceiver(Looper looper, int vsyncSource) {
+ if (looper == null) {
+ throw new IllegalArgumentException("looper must not be null");
+ }
+
+ mMessageQueue = looper.getQueue();
+ mReceiverPtr = nativeInit(new WeakReference<DisplayEventReceiver>(this), mMessageQueue,
+ vsyncSource);
+
+ mCloseGuard.open("dispose");
+ }
+
+ @Override
+ protected void finalize() throws Throwable {
+ try {
+ dispose(true);
+ } finally {
+ super.finalize();
+ }
+ }
+
+ /**
+ * Disposes the receiver.
+ */
+ public void dispose() {
+ dispose(false);
+ }
+
+ private void dispose(boolean finalized) {
+ if (mCloseGuard != null) {
+ if (finalized) {
+ mCloseGuard.warnIfOpen();
+ }
+ mCloseGuard.close();
+ }
+
+ if (mReceiverPtr != 0) {
+ nativeDispose(mReceiverPtr);
+ mReceiverPtr = 0;
+ }
+ mMessageQueue = null;
+ }
+
+ /**
+ * Called when a vertical sync pulse is received.
+ * The recipient should render a frame and then call {@link #scheduleVsync}
+ * to schedule the next vertical sync pulse.
+ *
+ * @param timestampNanos The timestamp of the pulse, in the {@link System#nanoTime()}
+ * timebase.
+ * @param physicalDisplayId Stable display ID that uniquely describes a (display, port) pair.
+ * @param frame The frame number. Increases by one for each vertical sync interval.
+ */
+ @UnsupportedAppUsage
+ public void onVsync(long timestampNanos, long physicalDisplayId, int frame) {
+ }
+
+ /**
+ * Called when a display hotplug event is received.
+ *
+ * @param timestampNanos The timestamp of the event, in the {@link System#nanoTime()}
+ * timebase.
+ * @param physicalDisplayId Stable display ID that uniquely describes a (display, port) pair.
+ * @param connected True if the display is connected, false if it disconnected.
+ */
+ @UnsupportedAppUsage
+ public void onHotplug(long timestampNanos, long physicalDisplayId, boolean connected) {
+ }
+
+ /**
+ * Called when a display config changed event is received.
+ *
+ * @param timestampNanos The timestamp of the event, in the {@link System#nanoTime()}
+ * timebase.
+ * @param physicalDisplayId Stable display ID that uniquely describes a (display, port) pair.
+ * @param configId The new config Id
+ */
+ public void onConfigChanged(long timestampNanos, long physicalDisplayId, int configId) {
+ }
+
+ /**
+ * Schedules a single vertical sync pulse to be delivered when the next
+ * display frame begins.
+ */
+ @UnsupportedAppUsage
+ public void scheduleVsync() {
+ if (mReceiverPtr == 0) {
+ Log.w(TAG, "Attempted to schedule a vertical sync pulse but the display event "
+ + "receiver has already been disposed.");
+ } else {
+ nativeScheduleVsync(mReceiverPtr);
+ }
+ }
+
+ // Called from native code.
+ @SuppressWarnings("unused")
+ @UnsupportedAppUsage
+ private void dispatchVsync(long timestampNanos, long physicalDisplayId, int frame) {
+ onVsync(timestampNanos, physicalDisplayId, frame);
+ }
+
+ // Called from native code.
+ @SuppressWarnings("unused")
+ @UnsupportedAppUsage
+ private void dispatchHotplug(long timestampNanos, long physicalDisplayId, boolean connected) {
+ onHotplug(timestampNanos, physicalDisplayId, connected);
+ }
+
+ // Called from native code.
+ @SuppressWarnings("unused")
+ private void dispatchConfigChanged(long timestampNanos, long physicalDisplayId, int configId) {
+ onConfigChanged(timestampNanos, physicalDisplayId, configId);
+ }
+
+}
