Merge "Get current and default brightness configs." into pi-dev
diff --git a/api/system-current.txt b/api/system-current.txt
index 038c6ed..cd934bd 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -1233,7 +1233,9 @@
 
   public final class DisplayManager {
     method public java.util.List<android.hardware.display.AmbientBrightnessDayStats> getAmbientBrightnessStats();
+    method public android.hardware.display.BrightnessConfiguration getBrightnessConfiguration();
     method public java.util.List<android.hardware.display.BrightnessChangeEvent> getBrightnessEvents();
+    method public android.hardware.display.BrightnessConfiguration getDefaultBrightnessConfiguration();
     method public android.graphics.Point getStableDisplaySize();
     method public void setBrightnessConfiguration(android.hardware.display.BrightnessConfiguration);
   }
diff --git a/api/test-current.txt b/api/test-current.txt
index e8d27a1..70e3cf3 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -370,7 +370,9 @@
 
   public final class DisplayManager {
     method public java.util.List<android.hardware.display.AmbientBrightnessDayStats> getAmbientBrightnessStats();
+    method public android.hardware.display.BrightnessConfiguration getBrightnessConfiguration();
     method public java.util.List<android.hardware.display.BrightnessChangeEvent> getBrightnessEvents();
+    method public android.hardware.display.BrightnessConfiguration getDefaultBrightnessConfiguration();
     method public android.graphics.Point getStableDisplaySize();
     method public void setBrightnessConfiguration(android.hardware.display.BrightnessConfiguration);
   }
diff --git a/core/java/android/hardware/display/DisplayManager.java b/core/java/android/hardware/display/DisplayManager.java
index e81fbee..a3b2d22 100644
--- a/core/java/android/hardware/display/DisplayManager.java
+++ b/core/java/android/hardware/display/DisplayManager.java
@@ -668,6 +668,45 @@
     }
 
     /**
+     * Gets the global display brightness configuration or the default curve if one hasn't been set.
+     *
+     * @hide
+     */
+    @SystemApi
+    @TestApi
+    @RequiresPermission(Manifest.permission.CONFIGURE_DISPLAY_BRIGHTNESS)
+    public BrightnessConfiguration getBrightnessConfiguration() {
+        return getBrightnessConfigurationForUser(mContext.getUserId());
+    }
+
+    /**
+     * Gets the global display brightness configuration or the default curve if one hasn't been set
+     * for a specific user.
+     *
+     * Note this requires the INTERACT_ACROSS_USERS permission if getting the configuration for a
+     * user other than the one you're currently running as.
+     *
+     * @hide
+     */
+    public BrightnessConfiguration getBrightnessConfigurationForUser(int userId) {
+        return mGlobal.getBrightnessConfigurationForUser(userId);
+    }
+
+    /**
+     * Gets the default global display brightness configuration or null one hasn't
+     * been configured.
+     *
+     * @hide
+     */
+    @SystemApi
+    @TestApi
+    @RequiresPermission(Manifest.permission.CONFIGURE_DISPLAY_BRIGHTNESS)
+    @Nullable
+    public BrightnessConfiguration getDefaultBrightnessConfiguration() {
+        return mGlobal.getDefaultBrightnessConfiguration();
+    }
+
+    /**
      * Temporarily sets the brightness of the display.
      * <p>
      * Requires the {@link android.Manifest.permission#CONTROL_DISPLAY_BRIGHTNESS} permission.
diff --git a/core/java/android/hardware/display/DisplayManagerGlobal.java b/core/java/android/hardware/display/DisplayManagerGlobal.java
index d7f7c86..1f67a6b 100644
--- a/core/java/android/hardware/display/DisplayManagerGlobal.java
+++ b/core/java/android/hardware/display/DisplayManagerGlobal.java
@@ -490,6 +490,32 @@
     }
 
     /**
+     * Gets the global brightness configuration for a given user or null if one hasn't been set.
+     *
+     * @hide
+     */
+    public BrightnessConfiguration getBrightnessConfigurationForUser(int userId) {
+        try {
+            return mDm.getBrightnessConfigurationForUser(userId);
+        } catch (RemoteException ex) {
+            throw ex.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Gets the default brightness configuration or null if one hasn't been configured.
+     *
+     * @hide
+     */
+    public BrightnessConfiguration getDefaultBrightnessConfiguration() {
+        try {
+            return mDm.getDefaultBrightnessConfiguration();
+        } catch (RemoteException ex) {
+            throw ex.rethrowFromSystemServer();
+        }
+    }
+
+    /**
      * Temporarily sets the brightness of the display.
      * <p>
      * Requires the {@link android.Manifest.permission#CONTROL_DISPLAY_BRIGHTNESS} permission.
diff --git a/core/java/android/hardware/display/IDisplayManager.aidl b/core/java/android/hardware/display/IDisplayManager.aidl
index 0571ae1..9fcb9d3 100644
--- a/core/java/android/hardware/display/IDisplayManager.aidl
+++ b/core/java/android/hardware/display/IDisplayManager.aidl
@@ -96,6 +96,14 @@
     void setBrightnessConfigurationForUser(in BrightnessConfiguration c, int userId,
             String packageName);
 
+    // Gets the global brightness configuration for a given user. Requires
+    // CONFIGURE_DISPLAY_BRIGHTNESS, and INTERACT_ACROSS_USER if the user is not
+    // the same as the calling user.
+    BrightnessConfiguration getBrightnessConfigurationForUser(int userId);
+
+    // Gets the default brightness configuration if configured.
+    BrightnessConfiguration getDefaultBrightnessConfiguration();
+
     // Temporarily sets the display brightness.
     void setTemporaryBrightness(int brightness);
 
diff --git a/services/core/java/com/android/server/display/AutomaticBrightnessController.java b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
index cb53521..5e1afeb 100644
--- a/services/core/java/com/android/server/display/AutomaticBrightnessController.java
+++ b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
@@ -282,6 +282,10 @@
         return mBrightnessMapper.isDefaultConfig();
     }
 
+    public BrightnessConfiguration getDefaultConfig() {
+        return mBrightnessMapper.getDefaultConfig();
+    }
+
     private boolean setDisplayPolicy(int policy) {
         if (mDisplayPolicy == policy) {
             return false;
diff --git a/services/core/java/com/android/server/display/BrightnessMappingStrategy.java b/services/core/java/com/android/server/display/BrightnessMappingStrategy.java
index c0d2599..4313d17 100644
--- a/services/core/java/com/android/server/display/BrightnessMappingStrategy.java
+++ b/services/core/java/com/android/server/display/BrightnessMappingStrategy.java
@@ -206,6 +206,8 @@
     /** @return true if the current brightness config is the default one */
     public abstract boolean isDefaultConfig();
 
+    public abstract BrightnessConfiguration getDefaultConfig();
+
     public abstract void dump(PrintWriter pw);
 
     private static float normalizeAbsoluteBrightness(int brightness) {
@@ -406,6 +408,9 @@
         }
 
         @Override
+        public BrightnessConfiguration getDefaultConfig() { return null; }
+
+        @Override
         public void dump(PrintWriter pw) {
             pw.println("SimpleMappingStrategy");
             pw.println("  mSpline=" + mSpline);
@@ -533,6 +538,9 @@
         }
 
         @Override
+        public BrightnessConfiguration getDefaultConfig() { return mDefaultConfig; }
+
+        @Override
         public void dump(PrintWriter pw) {
             pw.println("PhysicalMappingStrategy");
             pw.println("  mConfig=" + mConfig);
diff --git a/services/core/java/com/android/server/display/DisplayManagerService.java b/services/core/java/com/android/server/display/DisplayManagerService.java
index 9861ea7..c4b2b5e 100644
--- a/services/core/java/com/android/server/display/DisplayManagerService.java
+++ b/services/core/java/com/android/server/display/DisplayManagerService.java
@@ -1878,6 +1878,48 @@
         }
 
         @Override // Binder call
+        public BrightnessConfiguration getBrightnessConfigurationForUser(int userId) {
+            mContext.enforceCallingOrSelfPermission(
+                    Manifest.permission.CONFIGURE_DISPLAY_BRIGHTNESS,
+                    "Permission required to read the display's brightness configuration");
+            if (userId != UserHandle.getCallingUserId()) {
+                mContext.enforceCallingOrSelfPermission(
+                        Manifest.permission.INTERACT_ACROSS_USERS,
+                        "Permission required to read the display brightness"
+                                + " configuration of another user");
+            }
+            final long token = Binder.clearCallingIdentity();
+            try {
+                final int userSerial = getUserManager().getUserSerialNumber(userId);
+                synchronized (mSyncRoot) {
+                    BrightnessConfiguration config =
+                            mPersistentDataStore.getBrightnessConfiguration(userSerial);
+                    if (config == null) {
+                        config = mDisplayPowerController.getDefaultBrightnessConfiguration();
+                    }
+                    return config;
+                }
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        @Override // Binder call
+        public BrightnessConfiguration getDefaultBrightnessConfiguration() {
+            mContext.enforceCallingOrSelfPermission(
+                    Manifest.permission.CONFIGURE_DISPLAY_BRIGHTNESS,
+                    "Permission required to read the display's default brightness configuration");
+            final long token = Binder.clearCallingIdentity();
+            try {
+                synchronized (mSyncRoot) {
+                    return mDisplayPowerController.getDefaultBrightnessConfiguration();
+                }
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
+        @Override // Binder call
         public void setTemporaryBrightness(int brightness) {
             mContext.enforceCallingOrSelfPermission(
                     Manifest.permission.CONTROL_DISPLAY_BRIGHTNESS,
diff --git a/services/core/java/com/android/server/display/DisplayPowerController.java b/services/core/java/com/android/server/display/DisplayPowerController.java
index fa39ce4..ff8b88b 100644
--- a/services/core/java/com/android/server/display/DisplayPowerController.java
+++ b/services/core/java/com/android/server/display/DisplayPowerController.java
@@ -567,6 +567,10 @@
         }
     }
 
+    public BrightnessConfiguration getDefaultBrightnessConfiguration() {
+        return mAutomaticBrightnessController.getDefaultConfig();
+    }
+
     private void sendUpdatePowerState() {
         synchronized (mLock) {
             sendUpdatePowerStateLocked();