Merge "Make burn in protection updates happen on the minute." into lmp-mr1-modular-dev (1f956e42) · Commits · e / os / android_frameworks_base

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

+24 −4

Original line number	Diff line number	Diff line
		@@ -11,6 +11,7 @@ import android.content.IntentFilter;
		import android.hardware.display.DisplayManager;
		import android.hardware.display.DisplayManagerInternal;
		import android.os.SystemClock;
		import android.util.Slog;
		import android.view.Display;
		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_MINIMAL_INTERVAL_MS = TimeUnit.SECONDS.toMillis(10);

		private static final boolean DEBUG = false;

		private static final String 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() {
		@Override
		public void onReceive(Context context, Intent intent) {
		if (DEBUG) {
		Slog.d(TAG, "onReceive " + intent);
		}
		updateBurnInProtection();
		}
		};
		@@ -120,12 +126,26 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
		mDisplayManagerInternal.setDisplayOffsets(mDisplay.getDisplayId(),
		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.
		long next = SystemClock.elapsedRealtime() + BURNIN_PROTECTION_MINIMAL_INTERVAL_MS;
		long nextWall = nowWall + BURNIN_PROTECTION_MINIMAL_INTERVAL_MS;
		// 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;
		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 {
		mAlarmManager.cancel(mBurnInProtectionIntent);
		mCenteringAnimator.start();