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Change 2nd and later burn-in protection intervals to 2 mins

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BUG: 31855095
Change-Id: I969e24d2db882109855b74430b806247c4fbf6cb
This commit is contained in:
Erik Wolsheimer
2016-10-11 15:32:37 -07:00
parent 6119c54b48
commit 3b3940d381
1 changed files with 8 additions and 3 deletions
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11
services/core/java/com/android/server/policy/BurnInProtectionHelper.java
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@@ -43,7 +43,10 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
// Default value when max burnin radius is not set.
public static final int BURN_IN_MAX_RADIUS_DEFAULT = -1;
private static final long BURNIN_PROTECTION_WAKEUP_INTERVAL_MS = TimeUnit.MINUTES.toMillis(1);
private static final long BURNIN_PROTECTION_FIRST_WAKEUP_INTERVAL_MS =
TimeUnit.MINUTES.toMillis(1);
private static final long BURNIN_PROTECTION_SUBSEQUENT_WAKEUP_INTERVAL_MS =
TimeUnit.MINUTES.toMillis(2);
private static final long BURNIN_PROTECTION_MINIMAL_INTERVAL_MS = TimeUnit.SECONDS.toMillis(10);
private static final boolean DEBUG = false;
@@ -138,6 +141,9 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
// We don't want to adjust offsets immediately after the device goes into ambient mode.
// Instead, we want to wait until it's more likely that the user is not observing the
// screen anymore.
final long interval = mFirstUpdate
? BURNIN_PROTECTION_FIRST_WAKEUP_INTERVAL_MS
: BURNIN_PROTECTION_SUBSEQUENT_WAKEUP_INTERVAL_MS;
if (mFirstUpdate) {
mFirstUpdate = false;
} else {
@@ -156,8 +162,7 @@ public class BurnInProtectionHelper implements DisplayManager.DisplayListener,
// Next adjustment at least ten seconds in the future.
long nextWall = nowWall + BURNIN_PROTECTION_MINIMAL_INTERVAL_MS;
// And aligned to the minute.
nextWall = nextWall - nextWall % BURNIN_PROTECTION_WAKEUP_INTERVAL_MS
+ BURNIN_PROTECTION_WAKEUP_INTERVAL_MS;
nextWall = (nextWall - (nextWall % interval)) + interval;
// Use elapsed real time that is adjusted to full minute on wall clock.
final long nextElapsed = nowElapsed + (nextWall - nowWall);
if (DEBUG) {