am c831b978: Merge "Add isScreenBrightnessBoosted and a broadcast when underlying value changes." into lmp-mr1-modular-dev

* commit 'c831b978238d5ed200ca329c540eff00faba77e3':
  Add isScreenBrightnessBoosted and a broadcast when underlying value changes.

api/system-current.txt

@@ -23738,6 +23738,7 @@ package android.os {
   public final class PowerManager {
     method public boolean isInteractive();
     method public boolean isPowerSaveMode();
+    method public boolean isScreenBrightnessBoosted();
     method public deprecated boolean isScreenOn();
     method public boolean isWakeLockLevelSupported(int);
     method public android.os.PowerManager.WakeLock newWakeLock(int, java.lang.String);
@@ -23745,6 +23746,7 @@ package android.os {
     method public void userActivity(long, int, int);
     field public static final int ACQUIRE_CAUSES_WAKEUP = 268435456; // 0x10000000
     field public static final java.lang.String ACTION_POWER_SAVE_MODE_CHANGED = "android.os.action.POWER_SAVE_MODE_CHANGED";
+    field public static final java.lang.String ACTION_SCREEN_BRIGHTNESS_BOOST_CHANGED = "android.os.action.SCREEN_BRIGHTNESS_BOOST_CHANGED";
     field public static final deprecated int FULL_WAKE_LOCK = 26; // 0x1a
     field public static final int ON_AFTER_RELEASE = 536870912; // 0x20000000
     field public static final int PARTIAL_WAKE_LOCK = 1; // 0x1

core/java/android/os/IPowerManager.aidl

@@ -50,6 +50,7 @@ interface IPowerManager
 
     void setStayOnSetting(int val);
     void boostScreenBrightness(long time);
+    boolean isScreenBrightnessBoosted();
 
     // temporarily overrides the screen brightness settings to allow the user to
     // see the effect of a settings change without applying it immediately

core/java/android/os/PowerManager.java

@@ -711,6 +711,22 @@ public final class PowerManager {
         }
     }
 
+    /**
+     * Returns whether the screen brightness is currently boosted to maximum, caused by a call
+     * to {@link #boostScreenBrightness(long)}.
+     * @return {@code True} if the screen brightness is currently boosted. {@code False} otherwise.
+     *
+     * @hide
+     */
+    @SystemApi
+    public boolean isScreenBrightnessBoosted() {
+        try {
+            return mService.isScreenBrightnessBoosted();
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
     /**
      * Sets the brightness of the backlights (screen, keyboard, button).
      * <p>
@@ -891,6 +907,16 @@ public final class PowerManager {
     /** @hide */
     public static final String EXTRA_POWER_SAVE_MODE = "mode";
 
+    /**
+     * Intent that is broadcast when the state of {@link #isScreenBrightnessBoosted()} has changed.
+     * This broadcast is only sent to registered receivers.
+     *
+     * @hide
+     **/
+    @SystemApi
+    public static final String ACTION_SCREEN_BRIGHTNESS_BOOST_CHANGED
+            = "android.os.action.SCREEN_BRIGHTNESS_BOOST_CHANGED";
+
     /**
      * A wake lock is a mechanism to indicate that your application needs
      * to have the device stay on.

core/res/AndroidManifest.xml

@@ -77,6 +77,8 @@
     <protected-broadcast android:name="android.os.action.POWER_SAVE_MODE_CHANGED" />
     <protected-broadcast android:name="android.os.action.POWER_SAVE_MODE_CHANGING" />
 
+    <protected-broadcast android:name="android.os.action.SCREEN_BRIGHTNESS_BOOST_CHANGED" />
+
     <protected-broadcast android:name="android.app.action.ENTER_CAR_MODE" />
     <protected-broadcast android:name="android.app.action.EXIT_CAR_MODE" />
     <protected-broadcast android:name="android.app.action.ENTER_DESK_MODE" />

services/core/java/com/android/server/power/Notifier.java

@@ -78,6 +78,7 @@ final class Notifier {
     private static final int MSG_USER_ACTIVITY = 1;
     private static final int MSG_BROADCAST = 2;
     private static final int MSG_WIRELESS_CHARGING_STARTED = 3;
+    private static final int MSG_SCREEN_BRIGHTNESS_BOOST_CHANGED = 4;
 
     private final Object mLock = new Object();
 
@@ -92,6 +93,7 @@ final class Notifier {
     private final NotifierHandler mHandler;
     private final Intent mScreenOnIntent;
     private final Intent mScreenOffIntent;
+    private final Intent mScreenBrightnessBoostIntent;
 
     // The current interactive state.
     private int mActualInteractiveState;
@@ -128,6 +130,10 @@ final class Notifier {
         mScreenOffIntent = new Intent(Intent.ACTION_SCREEN_OFF);
         mScreenOffIntent.addFlags(
                 Intent.FLAG_RECEIVER_REGISTERED_ONLY | Intent.FLAG_RECEIVER_FOREGROUND);
+        mScreenBrightnessBoostIntent =
+                new Intent(PowerManager.ACTION_SCREEN_BRIGHTNESS_BOOST_CHANGED);
+        mScreenBrightnessBoostIntent.addFlags(
+                Intent.FLAG_RECEIVER_REGISTERED_ONLY | Intent.FLAG_RECEIVER_FOREGROUND);
 
         // Initialize interactive state for battery stats.
         try {
@@ -348,6 +354,19 @@ final class Notifier {
         }
     }
 
+    /**
+     * Called when screen brightness boost begins or ends.
+     */
+    public void onScreenBrightnessBoostChanged() {
+        if (DEBUG) {
+            Slog.d(TAG, "onScreenBrightnessBoostChanged");
+        }
+
+        mSuspendBlocker.acquire();
+        Message msg = mHandler.obtainMessage(MSG_SCREEN_BRIGHTNESS_BOOST_CHANGED);
+        msg.setAsynchronous(true);
+        mHandler.sendMessage(msg);
+    }
     /**
      * Called when there has been user activity.
      */
@@ -457,6 +476,22 @@ final class Notifier {
         }
     }
 
+    private void sendBrightnessBoostChangedBroadcast() {
+        if (DEBUG) {
+            Slog.d(TAG, "Sending brightness boost changed broadcast.");
+        }
+
+        mContext.sendOrderedBroadcastAsUser(mScreenBrightnessBoostIntent, UserHandle.ALL, null,
+                mScreeBrightnessBoostChangedDone, mHandler, 0, null, null);
+    }
+
+    private final BroadcastReceiver mScreeBrightnessBoostChangedDone = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            mSuspendBlocker.release();
+        }
+    };
+
     private void sendWakeUpBroadcast() {
         if (DEBUG) {
             Slog.d(TAG, "Sending wake up broadcast.");
@@ -539,6 +574,9 @@ final class Notifier {
                 case MSG_WIRELESS_CHARGING_STARTED:
                     playWirelessChargingStartedSound();
                     break;
+                case MSG_SCREEN_BRIGHTNESS_BOOST_CHANGED:
+                    sendBrightnessBoostChangedBroadcast();
+                    break;
             }
         }
     }

services/core/java/com/android/server/power/PowerManagerService.java

@@ -1900,6 +1900,7 @@ public final class PowerManagerService extends SystemService
                     }
                 }
                 mScreenBrightnessBoostInProgress = false;
+                mNotifier.onScreenBrightnessBoostChanged();
                 userActivityNoUpdateLocked(now,
                         PowerManager.USER_ACTIVITY_EVENT_OTHER, 0, Process.SYSTEM_UID);
             }
@@ -2275,7 +2276,10 @@ public final class PowerManagerService extends SystemService
 
             Slog.i(TAG, "Brightness boost activated (uid " + uid +")...");
             mLastScreenBrightnessBoostTime = eventTime;
+            if (!mScreenBrightnessBoostInProgress) {
                 mScreenBrightnessBoostInProgress = true;
+                mNotifier.onScreenBrightnessBoostChanged();
+            }
             mDirty |= DIRTY_SCREEN_BRIGHTNESS_BOOST;
 
             userActivityNoUpdateLocked(eventTime,
@@ -2284,6 +2288,12 @@ public final class PowerManagerService extends SystemService
         }
     }
 
+    private boolean isScreenBrightnessBoostedInternal() {
+        synchronized (mLock) {
+            return mScreenBrightnessBoostInProgress;
+        }
+    }
+
     /**
      * Called when a screen brightness boost timeout has occurred.
      *
@@ -3217,6 +3227,16 @@ public final class PowerManagerService extends SystemService
             }
         }
 
+        @Override // Binder call
+        public boolean isScreenBrightnessBoosted() {
+            final long ident = Binder.clearCallingIdentity();
+            try {
+                return isScreenBrightnessBoostedInternal();
+            } finally {
+                Binder.restoreCallingIdentity(ident);
+            }
+        }
+
         @Override // Binder call
         protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
             if (mContext.checkCallingOrSelfPermission(Manifest.permission.DUMP)