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/*
* Copyright (C) 2016 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 com.android.systemui.doze;
import static com.android.systemui.doze.DozeMachine.State.DOZE;
import static com.android.systemui.doze.DozeMachine.State.DOZE_AOD_PAUSED;
import android.app.AlarmManager;
import android.content.Context;
import android.os.Handler;
import android.os.SystemClock;
import android.text.format.Formatter;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.keyguard.KeyguardUpdateMonitor;
import com.android.keyguard.KeyguardUpdateMonitorCallback;
import com.android.systemui.statusbar.phone.DozeParameters;
import com.android.systemui.util.AlarmTimeout;
import com.android.systemui.util.wakelock.WakeLock;
import java.util.Calendar;
/**
* The policy controlling doze.
*/
public class DozeUi implements DozeMachine.Part {
private static final long TIME_TICK_DEADLINE_MILLIS = 90 * 1000; // 1.5min
private final Context mContext;
private final DozeHost mHost;
private final Handler mHandler;
private final WakeLock mWakeLock;
private final DozeMachine mMachine;
private final AlarmTimeout mTimeTicker;
private final boolean mCanAnimateTransition;
private final DozeParameters mDozeParameters;
private boolean mKeyguardShowing;
private final KeyguardUpdateMonitorCallback mKeyguardVisibilityCallback =
new KeyguardUpdateMonitorCallback() {
@Override
public void onKeyguardVisibilityChanged(boolean showing) {
mKeyguardShowing = showing;
updateAnimateScreenOff();
}
};
private long mLastTimeTickElapsed = 0;
public DozeUi(Context context, AlarmManager alarmManager, DozeMachine machine,
WakeLock wakeLock, DozeHost host, Handler handler,
DozeParameters params, KeyguardUpdateMonitor keyguardUpdateMonitor) {
mContext = context;
mMachine = machine;
mWakeLock = wakeLock;
mHost = host;
mHandler = handler;
mCanAnimateTransition = !params.getDisplayNeedsBlanking();
mDozeParameters = params;
mTimeTicker = new AlarmTimeout(alarmManager, this::onTimeTick, "doze_time_tick", handler);
keyguardUpdateMonitor.registerCallback(mKeyguardVisibilityCallback);
}
/**
* Decide if we're taking over the screen-off animation
* when the device was configured to skip doze after screen off.
*/
private void updateAnimateScreenOff() {
if (mCanAnimateTransition) {
final boolean controlScreenOff = mDozeParameters.getAlwaysOn() && mKeyguardShowing;
mDozeParameters.setControlScreenOffAnimation(controlScreenOff);
mHost.setAnimateScreenOff(controlScreenOff);
}
}
private void pulseWhileDozing(int reason) {
mHost.pulseWhileDozing(
new DozeHost.PulseCallback() {
@Override
public void onPulseStarted() {
try {
mMachine.requestState(
reason == DozeLog.PULSE_REASON_SENSOR_WAKE_LOCK_SCREEN
? DozeMachine.State.DOZE_PULSING_BRIGHT
: DozeMachine.State.DOZE_PULSING);
} catch (IllegalStateException e) {
// It's possible that the pulse was asynchronously cancelled while
// we were waiting for it to start (under stress conditions.)
// In those cases we should just ignore it. b/127657926
}
}
@Override
public void onPulseFinished() {
mMachine.requestState(DozeMachine.State.DOZE_PULSE_DONE);
}
}, reason);
}
@Override
public void transitionTo(DozeMachine.State oldState, DozeMachine.State newState) {
switch (newState) {
case DOZE_AOD:
if (oldState == DOZE_AOD_PAUSED || oldState == DOZE) {
// Whenever turning on the display, it's necessary to push a new frame.
// The display buffers will be empty and need to be filled.
mHost.dozeTimeTick();
// The first frame may arrive when the display isn't ready yet.
mHandler.postDelayed(mWakeLock.wrap(mHost::dozeTimeTick), 500);
}
scheduleTimeTick();
break;
case DOZE_AOD_PAUSING:
scheduleTimeTick();
break;
case DOZE:
case DOZE_AOD_PAUSED:
mHost.prepareForGentleWakeUp();
unscheduleTimeTick();
break;
case DOZE_REQUEST_PULSE:
scheduleTimeTick();
pulseWhileDozing(mMachine.getPulseReason());
break;
case INITIALIZED:
mHost.startDozing();
break;
case FINISH:
mHost.stopDozing();
unscheduleTimeTick();
break;
}
updateAnimateWakeup(newState);
}
private void updateAnimateWakeup(DozeMachine.State state) {
switch (state) {
case DOZE_REQUEST_PULSE:
case DOZE_PULSING:
case DOZE_PULSING_BRIGHT:
case DOZE_PULSE_DONE:
mHost.setAnimateWakeup(true);
break;
case FINISH:
// Keep current state.
break;
default:
mHost.setAnimateWakeup(mCanAnimateTransition && mDozeParameters.getAlwaysOn());
break;
}
}
private void scheduleTimeTick() {
if (mTimeTicker.isScheduled()) {
return;
}
long time = System.currentTimeMillis();
long delta = roundToNextMinute(time) - System.currentTimeMillis();
boolean scheduled = mTimeTicker.schedule(delta, AlarmTimeout.MODE_IGNORE_IF_SCHEDULED);
if (scheduled) {
DozeLog.traceTimeTickScheduled(time, time + delta);
}
mLastTimeTickElapsed = SystemClock.elapsedRealtime();
}
private void unscheduleTimeTick() {
if (!mTimeTicker.isScheduled()) {
return;
}
verifyLastTimeTick();
mTimeTicker.cancel();
}
private void verifyLastTimeTick() {
long millisSinceLastTick = SystemClock.elapsedRealtime() - mLastTimeTickElapsed;
if (millisSinceLastTick > TIME_TICK_DEADLINE_MILLIS) {
String delay = Formatter.formatShortElapsedTime(mContext, millisSinceLastTick);
DozeLog.traceMissedTick(delay);
Log.e(DozeMachine.TAG, "Missed AOD time tick by " + delay);
}
}
private long roundToNextMinute(long timeInMillis) {
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(timeInMillis);
calendar.set(Calendar.MILLISECOND, 0);
calendar.set(Calendar.SECOND, 0);
calendar.add(Calendar.MINUTE, 1);
return calendar.getTimeInMillis();
}
private void onTimeTick() {
verifyLastTimeTick();
mHost.dozeTimeTick();
// Keep wakelock until a frame has been pushed.
mHandler.post(mWakeLock.wrap(() -> {}));
scheduleTimeTick();
}
@VisibleForTesting
KeyguardUpdateMonitorCallback getKeyguardCallback() {
return mKeyguardVisibilityCallback;
}
}
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