// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.content.browser;
public abstract class VSyncManager {
/**
* Interface for requesting notification of the display vsync signal. The provider will call
* Listener.onVSync() to notify about vsync. The number of registrations and unregistrations of
* a given listener must be balanced.
*/
public static interface Provider {
void registerVSyncListener(Listener listener);
void unregisterVSyncListener(Listener listener);
}
/**
* Interface for receiving vsync notifications and information about the display refresh
* interval.
*/
public static interface Listener {
/**
* Notification of a vsync event.
* @param frameTimeMicros The latest vsync frame time in microseconds.
*/
void onVSync(long frameTimeMicros);
/**
* Update with the latest vsync parameters.
* @param tickTimeMicros The latest vsync tick time in microseconds.
* @param intervalMicros The vsync interval in microseconds.
*/
void updateVSync(long tickTimeMicros, long intervalMicros);
}
}