Merge "Add Display.getPreferredWideGamutColorSpace()."

core/java/android/hardware/display/DisplayManagerGlobal.java

@@ -20,6 +20,7 @@ import android.annotation.UnsupportedAppUsage;
 import android.content.Context;
 import android.content.pm.ParceledListSlice;
 import android.content.res.Resources;
+import android.graphics.ColorSpace;
 import android.graphics.Point;
 import android.hardware.display.DisplayManager.DisplayListener;
 import android.media.projection.IMediaProjection;
@@ -80,12 +81,20 @@ public final class DisplayManagerGlobal {
             new ArrayList<DisplayListenerDelegate>();
 
     private final SparseArray<DisplayInfo> mDisplayInfoCache = new SparseArray<DisplayInfo>();
+    private final ColorSpace mWideColorSpace;
     private int[] mDisplayIdCache;
 
     private int mWifiDisplayScanNestCount;
 
     private DisplayManagerGlobal(IDisplayManager dm) {
         mDm = dm;
+        try {
+            mWideColorSpace =
+                    ColorSpace.get(
+                            ColorSpace.Named.values()[mDm.getPreferredWideGamutColorSpaceId()]);
+        } catch (RemoteException ex) {
+            throw ex.rethrowFromSystemServer();
+        }
     }
 
     /**
@@ -494,6 +503,17 @@ public final class DisplayManagerGlobal {
         }
     }
 
+    /**
+     * Gets the preferred wide gamut color space for all displays.
+     * The wide gamut color space is returned from composition pipeline
+     * based on hardware capability.
+     *
+     * @hide
+     */
+    public ColorSpace getPreferredWideGamutColorSpace() {
+        return mWideColorSpace;
+    }
+
     /**
      * Sets the global brightness configuration for a given user.
      *

core/java/android/hardware/display/IDisplayManager.aidl

@@ -116,4 +116,9 @@ interface IDisplayManager {
 
     // Get the minimum brightness curve.
     Curve getMinimumBrightnessCurve();
+
+    // Gets the id of the preferred wide gamut color space for all displays.
+    // The wide gamut color space is returned from composition pipeline
+    // based on hardware capability.
+    int getPreferredWideGamutColorSpaceId();
 }

core/java/android/view/Display.java

@@ -26,6 +26,7 @@ import android.app.KeyguardManager;
 import android.content.res.CompatibilityInfo;
 import android.content.res.Configuration;
 import android.content.res.Resources;
+import android.graphics.ColorSpace;
 import android.graphics.PixelFormat;
 import android.graphics.Point;
 import android.graphics.Rect;
@@ -952,6 +953,24 @@ public final class Display {
         }
     }
 
+    /**
+     * Returns the preferred wide color space of the Display.
+     * The returned wide gamut color space is based on hardware capability and
+     * is preferred by the composition pipeline.
+     * Returns null if the display doesn't support wide color gamut.
+     * {@link Display#isWideColorGamut()}.
+     */
+    @Nullable
+    public ColorSpace getPreferredWideGamutColorSpace() {
+        synchronized (this) {
+            updateDisplayInfoLocked();
+            if (mDisplayInfo.isWideColorGamut()) {
+                return mGlobal.getPreferredWideGamutColorSpace();
+            }
+            return null;
+        }
+    }
+
     /**
      * Gets the supported color modes of this device.
      * @hide