Blank or unblank all displays as need.

Ensures that both the internal display and HDMI are blanked
or unblanked in tandem.

Bug: 7309812
Change-Id: Ie8b96d393e8bb20d23c92f3320142d9f7cf42aff

1 files changed, 18 insertions, 0 deletions

diff --git a/core/java/android/view/Surface.java b/core/java/android/view/Surface.java
index 8f4626fe4bbe..07bb8f93e85c 100644
--- a/core/java/android/view/Surface.java
+++ b/core/java/android/view/Surface.java
@@ -266,6 +266,8 @@ public class Surface implements Parcelable {
             IBinder displayToken, int orientation, Rect layerStackRect, Rect displayRect);
     private static native boolean nativeGetDisplayInfo(
             IBinder displayToken, PhysicalDisplayInfo outInfo);
+    private static native void nativeBlankDisplay(IBinder displayToken);
+    private static native void nativeUnblankDisplay(IBinder displayToken);
 
     private native void nativeCopyFrom(Surface other);
     private native void nativeTransferFrom(Surface other);
@@ -638,6 +640,22 @@ public class Surface implements Parcelable {
         return nativeGetDisplayInfo(displayToken, outInfo);
     }
 
+    /** @hide */
+    public static void blankDisplay(IBinder displayToken) {
+        if (displayToken == null) {
+            throw new IllegalArgumentException("displayToken must not be null");
+        }
+        nativeBlankDisplay(displayToken);
+    }
+
+    /** @hide */
+    public static void unblankDisplay(IBinder displayToken) {
+        if (displayToken == null) {
+            throw new IllegalArgumentException("displayToken must not be null");
+        }
+        nativeUnblankDisplay(displayToken);
+    }
+
     /**
      * Copy another surface to this one.  This surface now holds a reference
      * to the same data as the original surface, and is -not- the owner.