diff --git a/camera/Android.bp b/camera/Android.bp
index b288bcf..ea7259a 100644
--- a/camera/Android.bp
+++ b/camera/Android.bp
@@ -85,6 +85,7 @@
         "aidl/android/hardware/ICameraServiceProxy.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceUser.aidl",
+        "aidl/android/hardware/camera2/ICameraOfflineSession.aidl",
     ],
     path: "aidl",
 }
diff --git a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
index 93549e0..cdb7ac3 100644
--- a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
+++ b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
@@ -17,6 +17,8 @@
 package android.hardware.camera2;
 
 import android.hardware.camera2.CaptureRequest;
+import android.hardware.camera2.ICameraDeviceCallbacks;
+import android.hardware.camera2.ICameraOfflineSession;
 import android.hardware.camera2.impl.CameraMetadataNative;
 import android.hardware.camera2.params.OutputConfiguration;
 import android.hardware.camera2.params.SessionConfiguration;
@@ -177,4 +179,15 @@
       * @return the currently applied system-wide audio restriction mode
       */
     int getGlobalAudioRestriction();
+
+    /**
+     * Offline processing main entry point
+     *
+     * @param callbacks Object that will receive callbacks from offline session
+     * @param offlineOutputIds The ID of streams that needs to be preserved in offline session
+     *
+     * @return Offline session object.
+     */
+    ICameraOfflineSession switchToOffline(in ICameraDeviceCallbacks callbacks,
+            in Surface[] offlineOutputs);
 }
diff --git a/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl b/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl
new file mode 100644
index 0000000..ab030ab
--- /dev/null
+++ b/camera/aidl/android/hardware/camera2/ICameraOfflineSession.aidl
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera2;
+
+ /** @hide */
+interface ICameraOfflineSession
+{
+    void disconnect();
+}
diff --git a/camera/ndk/include/camera/NdkCameraMetadataTags.h b/camera/ndk/include/camera/NdkCameraMetadataTags.h
index 825f308..0652cbb 100644
--- a/camera/ndk/include/camera/NdkCameraMetadataTags.h
+++ b/camera/ndk/include/camera/NdkCameraMetadataTags.h
@@ -1311,7 +1311,7 @@
     /**
      * <p>List of the maximum number of regions that can be used for metering in
      * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
-     * this corresponds to the the maximum number of elements in
+     * this corresponds to the maximum number of elements in
      * ACAMERA_CONTROL_AE_REGIONS, ACAMERA_CONTROL_AWB_REGIONS,
      * and ACAMERA_CONTROL_AF_REGIONS.</p>
      *