Make burn in protection updates happen on the minute. (c069f921) · Commits · e / os / android_frameworks_base

policy/src/com/android/internal/policy/impl/BurnInProtectionHelper.java

+24 −4

Original line number	Original line	Diff line number	Diff line
	@@ -11,6 +11,7 @@ import android.content.IntentFilter;
	import android.hardware.display.DisplayManager;		import android.hardware.display.DisplayManager;
	import android.hardware.display.DisplayManagerInternal;		import android.hardware.display.DisplayManagerInternal;
	import android.os.SystemClock;		import android.os.SystemClock;
			import android.util.Slog;
	import android.view.Display;		import android.view.Display;
	import android.view.animation.LinearInterpolator;		import android.view.animation.LinearInterpolator;

	@@ -29,6 +30,8 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
	private static final long BURNIN_PROTECTION_WAKEUP_INTERVAL_MS = TimeUnit.MINUTES.toMillis(1);		private static final long BURNIN_PROTECTION_WAKEUP_INTERVAL_MS = TimeUnit.MINUTES.toMillis(1);
	private static final long BURNIN_PROTECTION_MINIMAL_INTERVAL_MS = TimeUnit.SECONDS.toMillis(10);		private static final long BURNIN_PROTECTION_MINIMAL_INTERVAL_MS = TimeUnit.SECONDS.toMillis(10);

			private static final boolean DEBUG = false;

	private static final String ACTION_BURN_IN_PROTECTION =		private static final String ACTION_BURN_IN_PROTECTION =
	"android.internal.policy.action.BURN_IN_PROTECTION";		"android.internal.policy.action.BURN_IN_PROTECTION";

	@@ -61,6 +64,9 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
	private BroadcastReceiver mBurnInProtectionReceiver = new BroadcastReceiver() {		private BroadcastReceiver mBurnInProtectionReceiver = new BroadcastReceiver() {
	@Override		@Override
	public void onReceive(Context context, Intent intent) {		public void onReceive(Context context, Intent intent) {
			if (DEBUG) {
			Slog.d(TAG, "onReceive " + intent);
			}
	updateBurnInProtection();		updateBurnInProtection();
	}		}
	};		};
	@@ -120,12 +126,26 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
	mDisplayManagerInternal.setDisplayOffsets(mDisplay.getDisplayId(),		mDisplayManagerInternal.setDisplayOffsets(mDisplay.getDisplayId(),
	mLastBurnInXOffset, mLastBurnInYOffset);		mLastBurnInXOffset, mLastBurnInYOffset);
	}		}
			// We use currentTimeMillis to compute the next wakeup time since we want to wake up at
			// the same time as we wake up to update ambient mode to minimize power consumption.
			// However, we use elapsedRealtime to schedule the alarm so that setting the time can't
			// disable burn-in protection for extended periods.
			final long nowWall = System.currentTimeMillis();
			final long nowElapsed = SystemClock.elapsedRealtime();
	// Next adjustment at least ten seconds in the future.		// Next adjustment at least ten seconds in the future.
	long next = SystemClock.elapsedRealtime() + BURNIN_PROTECTION_MINIMAL_INTERVAL_MS;		long nextWall = nowWall + BURNIN_PROTECTION_MINIMAL_INTERVAL_MS;
	// And aligned to the minute.		// And aligned to the minute.
	next = next - next % BURNIN_PROTECTION_WAKEUP_INTERVAL_MS		nextWall = nextWall - nextWall % BURNIN_PROTECTION_WAKEUP_INTERVAL_MS
	+ BURNIN_PROTECTION_WAKEUP_INTERVAL_MS;		+ BURNIN_PROTECTION_WAKEUP_INTERVAL_MS;
	mAlarmManager.set(AlarmManager.ELAPSED_REALTIME, next, mBurnInProtectionIntent);		// Use elapsed real time that is adjusted to full minute on wall clock.
			final long nextElapsed = nowElapsed + (nextWall - nowWall);
			if (DEBUG) {
			Slog.d(TAG, "scheduling next wake-up, now wall time " + nowWall
			+ ", next wall: " + nextWall + ", now elapsed: " + nowElapsed
			+ ", next elapsed: " + nextElapsed);
			}
			mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME, nextElapsed,
			mBurnInProtectionIntent);
	} else {		} else {
	mAlarmManager.cancel(mBurnInProtectionIntent);		mAlarmManager.cancel(mBurnInProtectionIntent);
	mCenteringAnimator.start();		mCenteringAnimator.start();