diff --git a/Android.bp b/Android.bp
index df90606..21054dd 100644
--- a/Android.bp
+++ b/Android.bp
@@ -479,7 +479,10 @@
         "media/java/android/media/IMediaHTTPConnection.aidl",
         "media/java/android/media/IMediaHTTPService.aidl",
         "media/java/android/media/IMediaResourceMonitor.aidl",
+        "media/java/android/media/IMediaRoute2Callback.aidl",
+        "media/java/android/media/IMediaRoute2Provider.aidl",
         "media/java/android/media/IMediaRouterClient.aidl",
+        "media/java/android/media/IMediaRouter2ManagerClient.aidl",
         "media/java/android/media/IMediaRouterService.aidl",
         "media/java/android/media/IMediaScannerListener.aidl",
         "media/java/android/media/IMediaScannerService.aidl",
@@ -1832,4 +1835,4 @@
     name: "framework-aidl-mappings",
     srcs: [":framework-defaults"],
     output: "framework-aidl-mappings.txt"
-}
\ No newline at end of file
+}
diff --git a/media/java/android/media/IMediaRoute2Callback.aidl b/media/java/android/media/IMediaRoute2Callback.aidl
new file mode 100644
index 0000000..f03c8ab
--- /dev/null
+++ b/media/java/android/media/IMediaRoute2Callback.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright 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.media;
+
+/**
+ * @hide
+ */
+oneway interface IMediaRoute2Callback {
+    void onRouteSelected(int uid, String routeId);
+}
diff --git a/media/java/android/media/IMediaRoute2Provider.aidl b/media/java/android/media/IMediaRoute2Provider.aidl
new file mode 100644
index 0000000..b97dcc5
--- /dev/null
+++ b/media/java/android/media/IMediaRoute2Provider.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright 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.media;
+
+import android.media.IMediaRoute2Callback;
+
+/**
+ * {@hide}
+ */
+oneway interface IMediaRoute2Provider {
+    void setCallback(IMediaRoute2Callback callback);
+    void selectRoute(int uid, String id);
+}
diff --git a/media/java/android/media/IMediaRouter2ManagerClient.aidl b/media/java/android/media/IMediaRouter2ManagerClient.aidl
new file mode 100644
index 0000000..234551b
--- /dev/null
+++ b/media/java/android/media/IMediaRouter2ManagerClient.aidl
@@ -0,0 +1,25 @@
+/*
+ * Copyright 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.media;
+
+/**
+ * {@hide}
+ */
+oneway interface IMediaRouter2ManagerClient {
+    void onRouteSelected(int uid, String routeId);
+    void onControlCategoriesChanged(int uid, in List<String> categories);
+}
diff --git a/media/java/android/media/IMediaRouterService.aidl b/media/java/android/media/IMediaRouterService.aidl
index 3308fc9..59f1d0d 100644
--- a/media/java/android/media/IMediaRouterService.aidl
+++ b/media/java/android/media/IMediaRouterService.aidl
@@ -17,6 +17,7 @@
 package android.media;
 
 import android.media.IMediaRouterClient;
+import android.media.IMediaRouter2ManagerClient;
 import android.media.MediaRouterClientState;
 
 /**
@@ -29,8 +30,15 @@
     MediaRouterClientState getState(IMediaRouterClient client);
     boolean isPlaybackActive(IMediaRouterClient client);
 
+    void setControlCategories(IMediaRouterClient client, in List<String> categories);
     void setDiscoveryRequest(IMediaRouterClient client, int routeTypes, boolean activeScan);
     void setSelectedRoute(IMediaRouterClient client, String routeId, boolean explicit);
     void requestSetVolume(IMediaRouterClient client, String routeId, int volume);
     void requestUpdateVolume(IMediaRouterClient client, String routeId, int direction);
+
+    void registerManagerAsUser(IMediaRouter2ManagerClient callback,
+            String packageName, int userId);
+    void unregisterManager(IMediaRouter2ManagerClient callback);
+    void setRemoteRoute(IMediaRouter2ManagerClient callback,
+            int uid, String routeId, boolean explicit);
 }
diff --git a/media/java/android/media/MediaRoute2ProviderService.java b/media/java/android/media/MediaRoute2ProviderService.java
new file mode 100644
index 0000000..04ddc30
--- /dev/null
+++ b/media/java/android/media/MediaRoute2ProviderService.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright 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.media;
+
+import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Looper;
+import android.os.RemoteException;
+import android.util.Log;
+
+/**
+ * @hide
+ */
+public abstract class MediaRoute2ProviderService extends Service {
+    private static final String TAG = "MediaRouteProviderSrv";
+
+    public static final String SERVICE_INTERFACE = "android.media.MediaRoute2ProviderService";
+
+    private final Handler mHandler;
+    private ProviderStub mStub;
+    private IMediaRoute2Callback mCallback;
+
+    public MediaRoute2ProviderService() {
+        mHandler = new Handler(Looper.getMainLooper());
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        if (SERVICE_INTERFACE.equals(intent.getAction())) {
+            if (mStub == null) {
+                mStub = new ProviderStub();
+            }
+            return mStub;
+        }
+        return null;
+    }
+
+    /**
+     * Called when selectRoute is called on a route of the provider.
+     *
+     * @param uid The target application uid
+     * @param routeId The id of the target route
+     */
+    public abstract void onSelect(int uid, String routeId);
+
+    /**
+     * Updates provider info from selected route and appliation.
+     *
+     * TODO: When provider descriptor is defined, this should update the descriptor correctly.
+     *
+     * @param uid
+     * @param routeId
+     */
+    public void updateProvider(int uid, String routeId) {
+        if (mCallback != null) {
+            try {
+                //TODO: After publishState() is fully implemented, delete this.
+                mCallback.onRouteSelected(uid, routeId);
+            } catch (RemoteException ex) {
+                Log.d(TAG, "Failed to update provider");
+            }
+        }
+        publishState();
+    }
+
+    void setCallback(IMediaRoute2Callback callback) {
+        mCallback = callback;
+        publishState();
+    }
+
+    void publishState() {
+        //TODO: Send provider descriptor to the MediaRouterService
+    }
+
+    final class ProviderStub extends IMediaRoute2Provider.Stub {
+        ProviderStub() { }
+
+        @Override
+        public void setCallback(IMediaRoute2Callback callback) {
+            mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::setCallback,
+                    MediaRoute2ProviderService.this, callback));
+        }
+
+        @Override
+        public void selectRoute(int uid, String id) {
+            mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onSelect,
+                    MediaRoute2ProviderService.this, uid, id));
+        }
+    }
+}
diff --git a/media/java/android/media/MediaRouter.java b/media/java/android/media/MediaRouter.java
index 3444e92..5a89d8c 100644
--- a/media/java/android/media/MediaRouter.java
+++ b/media/java/android/media/MediaRouter.java
@@ -347,6 +347,17 @@
             return mDisplayService.getDisplays(DisplayManager.DISPLAY_CATEGORY_PRESENTATION);
         }
 
+        void setControlCategories(List<String> categories) {
+            if (mClient != null) {
+                try {
+                    mMediaRouterService.setControlCategories(mClient,
+                            categories);
+                } catch (RemoteException ex) {
+                    Log.e(TAG, "Unable to set control categories.", ex);
+                }
+            }
+        }
+
         private void updatePresentationDisplays(int changedDisplayId) {
             final int count = mRoutes.size();
             for (int i = 0; i < count; i++) {
@@ -919,6 +930,25 @@
         return -1;
     }
 
+    //TODO: Remove @hide when it is ready.
+    //TODO: Provide pre-defined categories for app developers.
+    /**
+     * Sets control categories of the client application.
+     * Control categories can be used to filter out media routes
+     * that don't correspond with the client application.
+     * The only routes that match any of the categories will be shown on other applications.
+     *
+     * @hide
+     * @param categories Categories to set
+     */
+    public void setControlCategories(@NonNull List<String> categories) {
+        if (categories == null) {
+            throw new IllegalArgumentException("Categories must not be null");
+        }
+        sStatic.setControlCategories(categories);
+    }
+
+
     /**
      * Select the specified route to use for output of the given media types.
      * <p class="note">
diff --git a/media/java/android/media/MediaRouter2Manager.java b/media/java/android/media/MediaRouter2Manager.java
new file mode 100644
index 0000000..ac5958e
--- /dev/null
+++ b/media/java/android/media/MediaRouter2Manager.java
@@ -0,0 +1,241 @@
+/*
+ * Copyright 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.media;
+
+import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage;
+
+import android.annotation.CallbackExecutor;
+import android.annotation.NonNull;
+import android.content.Context;
+import android.os.Handler;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.UserHandle;
+import android.util.Log;
+
+import com.android.internal.annotations.GuardedBy;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executor;
+
+/**
+ * @hide
+ */
+public class MediaRouter2Manager {
+    private static final String TAG = "MediaRouter2Manager";
+    private static final Object sLock = new Object();
+
+    @GuardedBy("sLock")
+    private static MediaRouter2Manager sInstance;
+
+    final String mPackageName;
+
+    private Context mContext;
+    private Client mClient;
+    private final IMediaRouterService mMediaRouterService;
+    final Handler mHandler;
+
+    @GuardedBy("sLock")
+    final ArrayList<CallbackRecord> mCallbacks = new ArrayList<>();
+
+    /**
+     * Gets an instance of media router manager that controls media route of other apps.
+     * @param context
+     * @return
+     */
+    public static MediaRouter2Manager getInstance(@NonNull Context context) {
+        if (context == null) {
+            throw new IllegalArgumentException("context must not be null");
+        }
+        synchronized (sLock) {
+            if (sInstance == null) {
+                sInstance = new MediaRouter2Manager(context);
+            }
+            return sInstance;
+        }
+    }
+
+    private MediaRouter2Manager(Context context) {
+        mContext = context.getApplicationContext();
+        mMediaRouterService = IMediaRouterService.Stub.asInterface(
+                ServiceManager.getService(Context.MEDIA_ROUTER_SERVICE));
+        mPackageName = mContext.getPackageName();
+        mHandler = new Handler(context.getMainLooper());
+    }
+
+    /**
+     * Registers a callback to listen route info.
+     *
+     * @param executor The executor that runs the callback.
+     * @param callback The callback to add.
+     */
+    public void addCallback(@NonNull @CallbackExecutor Executor executor,
+            @NonNull Callback callback) {
+
+        if (executor == null) {
+            throw new IllegalArgumentException("executor must not be null");
+        }
+        if (callback == null) {
+            throw new IllegalArgumentException("callback must not be null");
+        }
+
+        synchronized (sLock) {
+            final int index = findCallbackRecord(callback);
+            if (index >= 0) {
+                Log.w(TAG, "Ignore adding the same callback twice.");
+                return;
+            }
+            if (mCallbacks.size() == 0) {
+                Client client = new Client();
+                try {
+                    mMediaRouterService.registerManagerAsUser(client, mPackageName,
+                            UserHandle.myUserId());
+                    mClient = client;
+                } catch (RemoteException ex) {
+                    Log.e(TAG, "Unable to register media router manager.", ex);
+                }
+            }
+            mCallbacks.add(new CallbackRecord(executor, callback));
+        }
+    }
+
+    /**
+     * Removes the specified callback.
+     *
+     * @param callback The callback to remove.
+     */
+    public void removeCallback(@NonNull Callback callback) {
+        if (callback == null) {
+            throw new IllegalArgumentException("callback must not be null");
+        }
+
+        synchronized (sLock) {
+            final int index = findCallbackRecord(callback);
+            if (index < 0) {
+                Log.w(TAG, "Ignore removing unknown callback. " + callback);
+                return;
+            }
+            mCallbacks.remove(index);
+            if (mCallbacks.size() == 0 && mClient != null) {
+                try {
+                    mMediaRouterService.unregisterManager(mClient);
+                } catch (RemoteException ex) {
+                    Log.e(TAG, "Unable to unregister media router manager", ex);
+                }
+                mClient = null;
+            }
+        }
+    }
+
+    private int findCallbackRecord(Callback callback) {
+        final int count = mCallbacks.size();
+        for (int i = 0; i < count; i++) {
+            if (mCallbacks.get(i).mCallback == callback) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    /**
+     * Selects media route for the specified application uid.
+     *
+     * @param uid The uid of the application that should change it's media route.
+     * @param routeId The id of the route to select
+     */
+    public void selectRoute(int uid, String routeId) {
+        if (mClient != null) {
+            try {
+                mMediaRouterService.setRemoteRoute(mClient, uid, routeId, /* explicit= */true);
+            } catch (RemoteException ex) {
+                Log.e(TAG, "Unable to select media route", ex);
+            }
+        }
+    }
+
+    /**
+     * Unselects media route for the specified application uid.
+     *
+     * @param uid The uid of the application that should stop routing.
+     */
+    public void unselectRoute(int uid) {
+        if (mClient != null) {
+            try {
+                mMediaRouterService.setRemoteRoute(mClient, uid, null, /* explicit= */ true);
+            } catch (RemoteException ex) {
+                Log.e(TAG, "Unable to select media route", ex);
+            }
+        }
+    }
+
+    void notifyRouteSelected(int uid, String routeId) {
+        for (CallbackRecord record : mCallbacks) {
+            record.mExecutor.execute(() -> record.mCallback.onRouteSelected(uid, routeId));
+        }
+    }
+
+    void notifyControlCategoriesChanged(int uid, List<String> categories) {
+        for (CallbackRecord record : mCallbacks) {
+            record.mExecutor.execute(
+                    () -> record.mCallback.onControlCategoriesChanged(uid, categories));
+        }
+    }
+
+    /**
+     * Interface for receiving events about media routing changes.
+     */
+    public abstract static class Callback {
+        /**
+         * Called when a route is selected for some application uid.
+         * @param uid
+         * @param routeId
+         */
+        public abstract void onRouteSelected(int uid, String routeId);
+
+        /**
+         * Called when the control categories of an application is changed.
+         * @param uid the uid of the app that changed control categories
+         * @param categories the changed categories
+         */
+        public abstract void onControlCategoriesChanged(int uid, List<String> categories);
+    }
+
+    final class CallbackRecord {
+        public final Executor mExecutor;
+        public final Callback mCallback;
+
+        CallbackRecord(Executor executor, Callback callback) {
+            mExecutor = executor;
+            mCallback = callback;
+        }
+    }
+
+    class Client extends IMediaRouter2ManagerClient.Stub {
+        @Override
+        public void onRouteSelected(int uid, String routeId) {
+            mHandler.sendMessage(obtainMessage(MediaRouter2Manager::notifyRouteSelected,
+                    MediaRouter2Manager.this, uid, routeId));
+        }
+
+        @Override
+        public void onControlCategoriesChanged(int uid, List<String> categories) {
+            mHandler.sendMessage(obtainMessage(MediaRouter2Manager::notifyControlCategoriesChanged,
+                    MediaRouter2Manager.this, uid, categories));
+        }
+    }
+}
diff --git a/media/tests/MediaRouteProvider/Android.bp b/media/tests/MediaRouteProvider/Android.bp
new file mode 100644
index 0000000..da42824
--- /dev/null
+++ b/media/tests/MediaRouteProvider/Android.bp
@@ -0,0 +1,18 @@
+android_test {
+    name: "mediarouteprovider",
+
+    srcs: ["**/*.java"],
+
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+    ],
+
+    static_libs: [
+        "android-support-test",
+        "mockito-target-minus-junit4",
+    ],
+
+    platform_apis: true,
+    certificate: "platform",
+}
\ No newline at end of file
diff --git a/media/tests/MediaRouteProvider/AndroidManifest.xml b/media/tests/MediaRouteProvider/AndroidManifest.xml
new file mode 100644
index 0000000..489a621
--- /dev/null
+++ b/media/tests/MediaRouteProvider/AndroidManifest.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.android.mediarouteprovider.example">
+
+    <application android:label="@string/app_name">
+        <uses-library android:name="android.test.runner" />
+        <service android:name=".SampleMediaRoute2ProviderService"
+            android:label="@string/app_name"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.media.MediaRoute2ProviderService" />
+            </intent-filter>
+       </service>
+    </application>
+</manifest>
diff --git a/media/tests/MediaRouteProvider/res/values/strings.xml b/media/tests/MediaRouteProvider/res/values/strings.xml
new file mode 100644
index 0000000..bb97064
--- /dev/null
+++ b/media/tests/MediaRouteProvider/res/values/strings.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- name of the app [CHAR LIMIT=25]-->
+    <string name="app_name">SampleMediaRouteProvider</string>
+</resources>
\ No newline at end of file
diff --git a/media/tests/MediaRouteProvider/src/com/android/mediarouteprovider/example/SampleMediaRoute2ProviderService.java b/media/tests/MediaRouteProvider/src/com/android/mediarouteprovider/example/SampleMediaRoute2ProviderService.java
new file mode 100644
index 0000000..22fbd85
--- /dev/null
+++ b/media/tests/MediaRouteProvider/src/com/android/mediarouteprovider/example/SampleMediaRoute2ProviderService.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 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 com.android.mediarouteprovider.example;
+
+import android.content.Intent;
+import android.media.MediaRoute2ProviderService;
+import android.os.IBinder;
+
+public class SampleMediaRoute2ProviderService extends MediaRoute2ProviderService {
+    @Override
+    public IBinder onBind(Intent intent) {
+        return super.onBind(intent);
+    }
+
+    @Override
+    public void onSelect(int uid, String routeId) {
+        updateProvider(uid, routeId);
+    }
+}
diff --git a/media/tests/MediaRouter/Android.bp b/media/tests/MediaRouter/Android.bp
new file mode 100644
index 0000000..611b25a
--- /dev/null
+++ b/media/tests/MediaRouter/Android.bp
@@ -0,0 +1,18 @@
+android_test {
+    name: "mediaroutertest",
+
+    srcs: ["**/*.java"],
+
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+    ],
+
+    static_libs: [
+        "android-support-test",
+        "mockito-target-minus-junit4",
+    ],
+
+    platform_apis: true,
+    certificate: "platform",
+}
\ No newline at end of file
diff --git a/media/tests/MediaRouter/AndroidManifest.xml b/media/tests/MediaRouter/AndroidManifest.xml
new file mode 100644
index 0000000..a34a264
--- /dev/null
+++ b/media/tests/MediaRouter/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.android.mediaroutertest">
+
+    <uses-permission android:name="android.permission.CONTROL_MEDIA_ROUTE" />
+
+    <application android:label="@string/app_name">
+        <uses-library android:name="android.test.runner" />
+    </application>
+
+    <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
+                     android:targetPackage="com.android.mediaroutertest"
+                     android:label="MediaRouter Tests"/>
+</manifest>
diff --git a/media/tests/MediaRouter/AndroidTest.xml b/media/tests/MediaRouter/AndroidTest.xml
new file mode 100644
index 0000000..1301062
--- /dev/null
+++ b/media/tests/MediaRouter/AndroidTest.xml
@@ -0,0 +1,16 @@
+<configuration description="Runs sample instrumentation test.">
+    <target_preparer class="com.android.tradefed.targetprep.TestFilePushSetup"/>
+    <target_preparer class="com.android.tradefed.targetprep.TestAppInstallSetup">
+        <option name="test-file-name" value="mediaroutertest.apk"/>
+    </target_preparer>
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer"/>
+    <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer"/>
+    <option name="test-suite-tag" value="apct"/>
+    <option name="test-tag" value="MediaRouterTest"/>
+
+    <test class="com.android.tradefed.testtype.AndroidJUnitTest">
+        <option name="package" value="com.android.mediaroutertest"/>
+        <option name="runner" value="android.support.test.runner.AndroidJUnitRunner" />
+        <option name="hidden-api-checks" value="false"/>
+    </test>
+</configuration>
diff --git a/media/tests/MediaRouter/res/values/strings.xml b/media/tests/MediaRouter/res/values/strings.xml
new file mode 100644
index 0000000..0737020
--- /dev/null
+++ b/media/tests/MediaRouter/res/values/strings.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- name of the app [CHAR LIMIT=25]-->
+    <string name="app_name">mediaRouterTest</string>
+</resources>
\ No newline at end of file
diff --git a/media/tests/MediaRouter/src/com/android/mediaroutertest/MediaRouterManagerTest.java b/media/tests/MediaRouter/src/com/android/mediaroutertest/MediaRouterManagerTest.java
new file mode 100644
index 0000000..a4bde65
--- /dev/null
+++ b/media/tests/MediaRouter/src/com/android/mediaroutertest/MediaRouterManagerTest.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 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 com.android.mediaroutertest;
+
+import static org.mockito.Mockito.after;
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.media.MediaRouter;
+import android.media.MediaRouter2Manager;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executor;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class MediaRouterManagerTest {
+    private static final String TAG = "MediaRouterManagerTest";
+
+    private static final int TARGET_UID = 109992;
+    private static final String ROUTE_1 = "MediaRoute1";
+
+    private static final int AWAIT_MS = 1000;
+    private static final int TIMEOUT_MS = 1000;
+
+    private Context mContext;
+    private MediaRouter2Manager mManager;
+    private MediaRouter mRouter;
+    private Executor mExecutor;
+
+    private static final List<String> TEST_CONTROL_CATEGORIES = new ArrayList();
+    private static final String CONTROL_CATEGORY_1 = "android.media.mediarouter.MEDIA1";
+    private static final String CONTROL_CATEGORY_2 = "android.media.mediarouter.MEDIA2";
+    static {
+        TEST_CONTROL_CATEGORIES.add(CONTROL_CATEGORY_1);
+        TEST_CONTROL_CATEGORIES.add(CONTROL_CATEGORY_2);
+    }
+
+    @Before
+    public void setUp() throws Exception {
+        mContext = InstrumentationRegistry.getTargetContext();
+        mManager = MediaRouter2Manager.getInstance(mContext);
+        mRouter = (MediaRouter) mContext.getSystemService(Context.MEDIA_ROUTER_SERVICE);
+        mExecutor = new ThreadPoolExecutor(
+            1, 20, 3, TimeUnit.SECONDS,
+            new SynchronousQueue<Runnable>());
+    }
+
+    @Test
+    public void transferTest() throws Exception {
+        MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
+
+        mManager.addCallback(mExecutor, mockCallback);
+
+        verify(mockCallback, after(AWAIT_MS).never())
+            .onRouteSelected(eq(TARGET_UID), any(String.class));
+
+        mManager.selectRoute(TARGET_UID, ROUTE_1);
+        verify(mockCallback, timeout(TIMEOUT_MS)).onRouteSelected(TARGET_UID, ROUTE_1);
+
+        mManager.removeCallback(mockCallback);
+    }
+
+    @Test
+    public void controlCategoryTest() throws Exception {
+        final int uid = android.os.Process.myUid();
+
+        MediaRouter2Manager.Callback mockCallback = mock(MediaRouter2Manager.Callback.class);
+        mManager.addCallback(mExecutor, mockCallback);
+
+        verify(mockCallback, after(AWAIT_MS).never()).onControlCategoriesChanged(eq(uid),
+                any(List.class));
+
+        mRouter.setControlCategories(TEST_CONTROL_CATEGORIES);
+        verify(mockCallback, timeout(TIMEOUT_MS).atLeastOnce())
+            .onControlCategoriesChanged(uid, TEST_CONTROL_CATEGORIES);
+
+        mManager.removeCallback(mockCallback);
+    }
+
+}
diff --git a/services/core/java/com/android/server/media/MediaRoute2ProviderProxy.java b/services/core/java/com/android/server/media/MediaRoute2ProviderProxy.java
new file mode 100644
index 0000000..d284c60
--- /dev/null
+++ b/services/core/java/com/android/server/media/MediaRoute2ProviderProxy.java
@@ -0,0 +1,341 @@
+/*
+ * Copyright 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 com.android.server.media;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.media.IMediaRoute2Callback;
+import android.media.IMediaRoute2Provider;
+import android.media.MediaRoute2ProviderService;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.IBinder.DeathRecipient;
+import android.os.RemoteException;
+import android.os.UserHandle;
+import android.util.Log;
+import android.util.Slog;
+
+import java.io.PrintWriter;
+import java.lang.ref.WeakReference;
+
+/**
+ * Maintains a connection to a particular media route provider service.
+ */
+final class MediaRoute2ProviderProxy implements ServiceConnection {
+    private static final String TAG = "MediaRoute2ProviderProxy";
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private final Context mContext;
+    private final ComponentName mComponentName;
+    private final int mUserId;
+    private final Handler mHandler;
+
+    private Callback mCallback;
+
+    // Selected Route info
+    public int mSelectedUid;
+    public String mSelectedRouteId;
+
+    // Connection state
+    private boolean mRunning;
+    private boolean mBound;
+    private Connection mActiveConnection;
+    private boolean mConnectionReady;
+
+    MediaRoute2ProviderProxy(Context context, ComponentName componentName, int userId) {
+        mContext = context;
+        mComponentName = componentName;
+        mUserId = userId;
+        mHandler = new Handler();
+    }
+
+    public void dump(PrintWriter pw, String prefix) {
+        pw.println(prefix + "Proxy");
+        pw.println(prefix + "  mUserId=" + mUserId);
+        pw.println(prefix + "  mRunning=" + mRunning);
+        pw.println(prefix + "  mBound=" + mBound);
+        pw.println(prefix + "  mActiveConnection=" + mActiveConnection);
+        pw.println(prefix + "  mConnectionReady=" + mConnectionReady);
+    }
+
+    public void setCallback(Callback callback) {
+        mCallback = callback;
+    }
+
+    public void setSelectedRoute(int uid, String routeId) {
+        if (mConnectionReady) {
+            mActiveConnection.selectRoute(uid, routeId);
+            updateBinding();
+        }
+    }
+
+    public boolean hasComponentName(String packageName, String className) {
+        return mComponentName.getPackageName().equals(packageName)
+                && mComponentName.getClassName().equals(className);
+    }
+
+    public String getFlattenedComponentName() {
+        return mComponentName.flattenToShortString();
+    }
+
+    public void start() {
+        if (!mRunning) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": Starting");
+            }
+
+            mRunning = true;
+            updateBinding();
+        }
+    }
+
+    public void stop() {
+        if (mRunning) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": Stopping");
+            }
+
+            mRunning = false;
+            updateBinding();
+        }
+    }
+
+    public void rebindIfDisconnected() {
+        if (mActiveConnection == null && shouldBind()) {
+            unbind();
+            bind();
+        }
+    }
+
+    private void updateBinding() {
+        if (shouldBind()) {
+            bind();
+        } else {
+            unbind();
+        }
+    }
+
+    private boolean shouldBind() {
+        //TODO: binding could be delayed until it's necessary.
+        if (mRunning) {
+            return true;
+        }
+        return false;
+    }
+
+    private void bind() {
+        if (!mBound) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": Binding");
+            }
+
+            Intent service = new Intent(MediaRoute2ProviderService.SERVICE_INTERFACE);
+            service.setComponent(mComponentName);
+            try {
+                mBound = mContext.bindServiceAsUser(service, this,
+                        Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE,
+                        new UserHandle(mUserId));
+                if (!mBound && DEBUG) {
+                    Slog.d(TAG, this + ": Bind failed");
+                }
+            } catch (SecurityException ex) {
+                if (DEBUG) {
+                    Slog.d(TAG, this + ": Bind failed", ex);
+                }
+            }
+        }
+    }
+
+    private void unbind() {
+        if (mBound) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": Unbinding");
+            }
+
+            mBound = false;
+            disconnect();
+            mContext.unbindService(this);
+        }
+    }
+
+    @Override
+    public void onServiceConnected(ComponentName name, IBinder service) {
+        if (DEBUG) {
+            Slog.d(TAG, this + ": Connected");
+        }
+
+        if (mBound) {
+            disconnect();
+
+            IMediaRoute2Provider provider = IMediaRoute2Provider.Stub.asInterface(service);
+            if (provider != null) {
+                Connection connection = new Connection(provider);
+                if (connection.register()) {
+                    mActiveConnection = connection;
+                } else {
+                    if (DEBUG) {
+                        Slog.d(TAG, this + ": Registration failed");
+                    }
+                }
+            } else {
+                Slog.e(TAG, this + ": Service returned invalid remote display provider binder");
+            }
+        }
+    }
+
+    @Override
+    public void onServiceDisconnected(ComponentName name) {
+        if (DEBUG) {
+            Slog.d(TAG, this + ": Service disconnected");
+        }
+        disconnect();
+    }
+
+    private void onConnectionReady(Connection connection) {
+        if (mActiveConnection == connection) {
+            mConnectionReady = true;
+        }
+    }
+
+    private void onConnectionDied(Connection connection) {
+        if (mActiveConnection == connection) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": Service connection died");
+            }
+            disconnect();
+        }
+    }
+
+    private void onRouteSelected(Connection connection, int uid, String routeId) {
+        mSelectedUid = uid;
+        mSelectedRouteId = routeId;
+
+        if (mActiveConnection == connection) {
+            if (DEBUG) {
+                Slog.d(TAG, this + ": State changed ");
+            }
+            mHandler.post(mStateChanged);
+        }
+    }
+
+    private void disconnect() {
+        if (mActiveConnection != null) {
+            mConnectionReady = false;
+            mActiveConnection.dispose();
+            mActiveConnection = null;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "Service connection " + mComponentName.flattenToShortString();
+    }
+
+    private final Runnable mStateChanged = new Runnable() {
+        @Override
+        public void run() {
+            if (mCallback != null) {
+                mCallback.onProviderStateChanged(MediaRoute2ProviderProxy.this);
+            }
+        }
+    };
+
+    public interface Callback {
+        void onProviderStateChanged(MediaRoute2ProviderProxy provider);
+    }
+
+    private final class Connection implements DeathRecipient {
+        private final IMediaRoute2Provider mProvider;
+        private final ProviderCallback mCallback;
+
+        Connection(IMediaRoute2Provider provider) {
+            mProvider = provider;
+            mCallback = new ProviderCallback(this);
+        }
+
+        public boolean register() {
+            try {
+                mProvider.asBinder().linkToDeath(this, 0);
+                mProvider.setCallback(mCallback);
+                mHandler.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        onConnectionReady(Connection.this);
+                    }
+                });
+                return true;
+            } catch (RemoteException ex) {
+                binderDied();
+            }
+            return false;
+        }
+
+        public void dispose() {
+            mProvider.asBinder().unlinkToDeath(this, 0);
+            mCallback.dispose();
+        }
+
+        public void selectRoute(int uid, String id) {
+            try {
+                mProvider.selectRoute(uid, id);
+            } catch (RemoteException ex) {
+                Slog.e(TAG, "Failed to deliver request to set discovery mode.", ex);
+            }
+        }
+
+        @Override
+        public void binderDied() {
+            mHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    onConnectionDied(Connection.this);
+                }
+            });
+        }
+
+        void postRouteSelected(int uid, String routeId) {
+            mHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    onRouteSelected(Connection.this, uid, routeId);
+                }
+            });
+        }
+    }
+
+    private static final class ProviderCallback extends IMediaRoute2Callback.Stub  {
+        private final WeakReference<Connection> mConnectionRef;
+
+        ProviderCallback(Connection connection) {
+            mConnectionRef = new WeakReference<Connection>(connection);
+        }
+
+        public void dispose() {
+            mConnectionRef.clear();
+        }
+
+        @Override
+        public void onRouteSelected(int uid, String routeId) throws RemoteException {
+            Connection connection = mConnectionRef.get();
+            if (connection != null) {
+                connection.postRouteSelected(uid, routeId);
+            }
+        }
+    }
+}
diff --git a/services/core/java/com/android/server/media/MediaRoute2ProviderWatcher.java b/services/core/java/com/android/server/media/MediaRoute2ProviderWatcher.java
new file mode 100644
index 0000000..08d8c58
--- /dev/null
+++ b/services/core/java/com/android/server/media/MediaRoute2ProviderWatcher.java
@@ -0,0 +1,176 @@
+/*
+ * Copyright 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 com.android.server.media;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.media.MediaRoute2ProviderService;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.util.Log;
+import android.util.Slog;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Collections;
+
+/**
+ */
+final class MediaRoute2ProviderWatcher {
+    private static final String TAG = "MediaRouteProvider";  // max. 23 chars
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private final Context mContext;
+    private final Callback mCallback;
+    private final Handler mHandler;
+    private final int mUserId;
+    private final PackageManager mPackageManager;
+
+    private final ArrayList<MediaRoute2ProviderProxy> mProviders = new ArrayList<>();
+    private boolean mRunning;
+
+    MediaRoute2ProviderWatcher(Context context,
+            Callback callback, Handler handler, int userId) {
+        mContext = context;
+        mCallback = callback;
+        mHandler = handler;
+        mUserId = userId;
+        mPackageManager = context.getPackageManager();
+    }
+
+    public void dump(PrintWriter pw, String prefix) {
+        pw.println(prefix + "Watcher");
+        pw.println(prefix + "  mUserId=" + mUserId);
+        pw.println(prefix + "  mRunning=" + mRunning);
+        pw.println(prefix + "  mProviders.size()=" + mProviders.size());
+    }
+
+    public void start() {
+        if (!mRunning) {
+            mRunning = true;
+
+            IntentFilter filter = new IntentFilter();
+            filter.addAction(Intent.ACTION_PACKAGE_ADDED);
+            filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
+            filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
+            filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
+            filter.addAction(Intent.ACTION_PACKAGE_RESTARTED);
+            filter.addDataScheme("package");
+            mContext.registerReceiverAsUser(mScanPackagesReceiver,
+                    new UserHandle(mUserId), filter, null, mHandler);
+
+            // Scan packages.
+            // Also has the side-effect of restarting providers if needed.
+            mHandler.post(mScanPackagesRunnable);
+        }
+    }
+
+    public void stop() {
+        if (mRunning) {
+            mRunning = false;
+
+            mContext.unregisterReceiver(mScanPackagesReceiver);
+            mHandler.removeCallbacks(mScanPackagesRunnable);
+
+            // Stop all providers.
+            for (int i = mProviders.size() - 1; i >= 0; i--) {
+                mProviders.get(i).stop();
+            }
+        }
+    }
+
+    private void scanPackages() {
+        if (!mRunning) {
+            return;
+        }
+
+        // Add providers for all new services.
+        // Reorder the list so that providers left at the end will be the ones to remove.
+        int targetIndex = 0;
+        Intent intent = new Intent(MediaRoute2ProviderService.SERVICE_INTERFACE);
+        for (ResolveInfo resolveInfo : mPackageManager.queryIntentServicesAsUser(
+                intent, 0, mUserId)) {
+            ServiceInfo serviceInfo = resolveInfo.serviceInfo;
+            if (serviceInfo != null) {
+                int sourceIndex = findProvider(serviceInfo.packageName, serviceInfo.name);
+                if (sourceIndex < 0) {
+                    MediaRoute2ProviderProxy provider =
+                            new MediaRoute2ProviderProxy(mContext,
+                            new ComponentName(serviceInfo.packageName, serviceInfo.name),
+                            mUserId);
+                    provider.start();
+                    mProviders.add(targetIndex++, provider);
+                    mCallback.addProvider(provider);
+                } else if (sourceIndex >= targetIndex) {
+                    MediaRoute2ProviderProxy provider = mProviders.get(sourceIndex);
+                    provider.start(); // restart the provider if needed
+                    provider.rebindIfDisconnected();
+                    Collections.swap(mProviders, sourceIndex, targetIndex++);
+                }
+            }
+        }
+
+        // Remove providers for missing services.
+        if (targetIndex < mProviders.size()) {
+            for (int i = mProviders.size() - 1; i >= targetIndex; i--) {
+                MediaRoute2ProviderProxy provider = mProviders.get(i);
+                mCallback.removeProvider(provider);
+                mProviders.remove(provider);
+                provider.stop();
+            }
+        }
+    }
+
+    private int findProvider(String packageName, String className) {
+        int count = mProviders.size();
+        for (int i = 0; i < count; i++) {
+            MediaRoute2ProviderProxy provider = mProviders.get(i);
+            if (provider.hasComponentName(packageName, className)) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    private final BroadcastReceiver mScanPackagesReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (DEBUG) {
+                Slog.d(TAG, "Received package manager broadcast: " + intent);
+            }
+            scanPackages();
+        }
+    };
+
+    private final Runnable mScanPackagesRunnable = new Runnable() {
+        @Override
+        public void run() {
+            scanPackages();
+        }
+    };
+
+    public interface Callback {
+        void addProvider(MediaRoute2ProviderProxy provider);
+        void removeProvider(MediaRoute2ProviderProxy provider);
+    }
+}
diff --git a/services/core/java/com/android/server/media/MediaRouterService.java b/services/core/java/com/android/server/media/MediaRouterService.java
index 23d3ce0..a43533f 100644
--- a/services/core/java/com/android/server/media/MediaRouterService.java
+++ b/services/core/java/com/android/server/media/MediaRouterService.java
@@ -30,6 +30,7 @@
 import android.media.AudioSystem;
 import android.media.IAudioRoutesObserver;
 import android.media.IAudioService;
+import android.media.IMediaRouter2ManagerClient;
 import android.media.IMediaRouterClient;
 import android.media.IMediaRouterService;
 import android.media.MediaRouter;
@@ -49,6 +50,7 @@
 import android.util.ArrayMap;
 import android.util.IntArray;
 import android.util.Log;
+import android.util.Pair;
 import android.util.Slog;
 import android.util.SparseArray;
 import android.util.TimeUtils;
@@ -96,6 +98,7 @@
     private final Object mLock = new Object();
     private final SparseArray<UserRecord> mUserRecords = new SparseArray<>();
     private final ArrayMap<IBinder, ClientRecord> mAllClientRecords = new ArrayMap<>();
+    private final ArrayMap<IBinder, ManagerRecord> mAllManagerRecords = new ArrayMap<>();
     private int mCurrentUserId = -1;
     private final IAudioService mAudioService;
     private final AudioPlayerStateMonitor mAudioPlayerStateMonitor;
@@ -304,6 +307,22 @@
 
     // Binder call
     @Override
+    public void setControlCategories(IMediaRouterClient client, List<String> categories) {
+        if (client == null) {
+            throw new IllegalArgumentException("client must not be null");
+        }
+        final long token = Binder.clearCallingIdentity();
+        try {
+            synchronized (mLock) {
+                setControlCategoriesLocked(client, categories);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    // Binder call
+    @Override
     public void setDiscoveryRequest(IMediaRouterClient client,
             int routeTypes, boolean activeScan) {
         if (client == null) {
@@ -402,6 +421,65 @@
         }
     }
 
+    // Binder call
+    @Override
+    public void registerManagerAsUser(IMediaRouter2ManagerClient client,
+            String packageName, int userId) {
+        if (client == null) {
+            throw new IllegalArgumentException("client must not be null");
+        }
+        //TODO: should check permission
+        final boolean trusted = true;
+
+        final int uid = Binder.getCallingUid();
+        if (!validatePackageName(uid, packageName)) {
+            throw new SecurityException("packageName must match the calling uid");
+        }
+
+        final int pid = Binder.getCallingPid();
+        final int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
+                false /*allowAll*/, true /*requireFull*/, "registerManagerAsUser", packageName);
+        final long token = Binder.clearCallingIdentity();
+        try {
+            synchronized (mLock) {
+                registerManagerLocked(client, uid, pid, packageName, resolvedUserId, trusted);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    // Binder call
+    @Override
+    public void unregisterManager(IMediaRouter2ManagerClient client) {
+        if (client == null) {
+            throw new IllegalArgumentException("client must not be null");
+        }
+
+        final long token = Binder.clearCallingIdentity();
+        try {
+            synchronized (mLock) {
+                unregisterManagerLocked(client, false);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    // Binder call
+    @Override
+    public void setRemoteRoute(IMediaRouter2ManagerClient client,
+            int uid, String routeId, boolean explicit) {
+        final long token = Binder.clearCallingIdentity();
+        try {
+            synchronized (mLock) {
+                setRemoteRouteLocked(client, uid, routeId, explicit);
+            }
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
     void restoreBluetoothA2dp() {
         try {
             boolean a2dpOn;
@@ -473,6 +551,12 @@
         }
     }
 
+    void clientDied(ManagerRecord managerRecord) {
+        synchronized (mLock) {
+            unregisterManagerLocked(managerRecord.mClient, true);
+        }
+    }
+
     private void registerClientLocked(IMediaRouterClient client,
             int uid, int pid, String packageName, int userId, boolean trusted) {
         final IBinder binder = client.asBinder();
@@ -520,6 +604,17 @@
         return null;
     }
 
+    private void setControlCategoriesLocked(IMediaRouterClient client, List<String> categories) {
+        final IBinder binder = client.asBinder();
+        ClientRecord clientRecord = mAllClientRecords.get(binder);
+
+        if (clientRecord != null) {
+            clientRecord.mControlCategories = categories;
+            clientRecord.mUserRecord.mHandler.obtainMessage(
+                    UserHandler.MSG_UPDATE_CLIENT_USAGE, clientRecord).sendToTarget();
+        }
+    }
+
     private void setDiscoveryRequestLocked(IMediaRouterClient client,
             int routeTypes, boolean activeScan) {
         final IBinder binder = client.asBinder();
@@ -573,6 +668,63 @@
         }
     }
 
+    private void registerManagerLocked(IMediaRouter2ManagerClient client,
+            int uid, int pid, String packageName, int userId, boolean trusted) {
+        final IBinder binder = client.asBinder();
+        ManagerRecord managerRecord = mAllManagerRecords.get(binder);
+        if (managerRecord == null) {
+            boolean newUser = false;
+            UserRecord userRecord = mUserRecords.get(userId);
+            if (userRecord == null) {
+                userRecord = new UserRecord(userId);
+                newUser = true;
+            }
+            managerRecord = new ManagerRecord(userRecord, client, uid, pid, packageName, trusted);
+            try {
+                binder.linkToDeath(managerRecord, 0);
+            } catch (RemoteException ex) {
+                throw new RuntimeException("Media router client died prematurely.", ex);
+            }
+
+            if (newUser) {
+                mUserRecords.put(userId, userRecord);
+                initializeUserLocked(userRecord);
+            }
+
+            userRecord.mManagerRecords.add(managerRecord);
+            mAllManagerRecords.put(binder, managerRecord);
+
+            // send client usage to manager
+            final int clientCount = userRecord.mClientRecords.size();
+            for (int i = 0; i < clientCount; i++) {
+                userRecord.mHandler.obtainMessage(UserHandler.MSG_UPDATE_CLIENT_USAGE,
+                        userRecord.mClientRecords.get(i)).sendToTarget();
+            }
+        }
+    }
+
+    private void unregisterManagerLocked(IMediaRouter2ManagerClient client, boolean died) {
+        ManagerRecord clientRecord = mAllManagerRecords.remove(client.asBinder());
+        if (clientRecord != null) {
+            UserRecord userRecord = clientRecord.mUserRecord;
+            userRecord.mManagerRecords.remove(clientRecord);
+            clientRecord.dispose();
+            disposeUserIfNeededLocked(userRecord); // since client removed from user
+        }
+    }
+
+    private void setRemoteRouteLocked(IMediaRouter2ManagerClient client,
+            int uid, String routeId, boolean explicit) {
+        ManagerRecord managerRecord = mAllManagerRecords.get(client.asBinder());
+        if (managerRecord != null) {
+            if (explicit && managerRecord.mTrusted) {
+                Pair<Integer, String> obj = new Pair<>(uid, routeId);
+                managerRecord.mUserRecord.mHandler.obtainMessage(
+                        UserHandler.MSG_SELECT_REMOTE_ROUTE, obj).sendToTarget();
+            }
+        }
+    }
+
     private void requestSetVolumeLocked(IMediaRouterClient client,
             String routeId, int volume) {
         final IBinder binder = client.asBinder();
@@ -665,6 +817,46 @@
         }
     }
 
+    final class ManagerRecord implements DeathRecipient {
+        public final UserRecord mUserRecord;
+        public final IMediaRouter2ManagerClient mClient;
+        public final int mUid;
+        public final int mPid;
+        public final String mPackageName;
+        public final boolean mTrusted;
+
+        ManagerRecord(UserRecord userRecord, IMediaRouter2ManagerClient client,
+                int uid, int pid, String packageName, boolean trusted) {
+            mUserRecord = userRecord;
+            mClient = client;
+            mUid = uid;
+            mPid = pid;
+            mPackageName = packageName;
+            mTrusted = trusted;
+        }
+
+        public void dispose() {
+            mClient.asBinder().unlinkToDeath(this, 0);
+        }
+
+        @Override
+        public void binderDied() {
+            clientDied(this);
+        }
+
+        public void dump(PrintWriter pw, String prefix) {
+            pw.println(prefix + this);
+
+            final String indent = prefix + "  ";
+            pw.println(indent + "mTrusted=" + mTrusted);
+        }
+
+        @Override
+        public String toString() {
+            return "Client " + mPackageName + " (pid " + mPid + ")";
+        }
+    }
+
     /**
      * Information about a particular client of the media router.
      * The contents of this object is guarded by mLock.
@@ -676,6 +868,7 @@
         public final int mPid;
         public final String mPackageName;
         public final boolean mTrusted;
+        public List<String> mControlCategories;
 
         public int mRouteTypes;
         public boolean mActiveScan;
@@ -726,7 +919,8 @@
      */
     final class UserRecord {
         public final int mUserId;
-        public final ArrayList<ClientRecord> mClientRecords = new ArrayList<ClientRecord>();
+        public final ArrayList<ClientRecord> mClientRecords = new ArrayList<>();
+        public final ArrayList<ManagerRecord> mManagerRecords = new ArrayList<>();
         public final UserHandler mHandler;
         public MediaRouterClientState mRouterState;
 
@@ -781,7 +975,9 @@
      */
     static final class UserHandler extends Handler
             implements RemoteDisplayProviderWatcher.Callback,
-            RemoteDisplayProviderProxy.Callback {
+            RemoteDisplayProviderProxy.Callback,
+            MediaRoute2ProviderWatcher.Callback,
+            MediaRoute2ProviderProxy.Callback {
         public static final int MSG_START = 1;
         public static final int MSG_STOP = 2;
         public static final int MSG_UPDATE_DISCOVERY_REQUEST = 3;
@@ -792,6 +988,9 @@
         private static final int MSG_UPDATE_CLIENT_STATE = 8;
         private static final int MSG_CONNECTION_TIMED_OUT = 9;
 
+        private static final int MSG_SELECT_REMOTE_ROUTE = 10;
+        private static final int MSG_UPDATE_CLIENT_USAGE = 11;
+
         private static final int TIMEOUT_REASON_NOT_AVAILABLE = 1;
         private static final int TIMEOUT_REASON_CONNECTION_LOST = 2;
         private static final int TIMEOUT_REASON_WAITING_FOR_CONNECTING = 3;
@@ -807,11 +1006,17 @@
         private final MediaRouterService mService;
         private final UserRecord mUserRecord;
         private final RemoteDisplayProviderWatcher mWatcher;
+        private final MediaRoute2ProviderWatcher mMediaWatcher;
+
         private final ArrayList<ProviderRecord> mProviderRecords =
                 new ArrayList<ProviderRecord>();
         private final ArrayList<IMediaRouterClient> mTempClients =
                 new ArrayList<IMediaRouterClient>();
 
+        private final ArrayList<MediaRoute2ProviderProxy> mMediaProviders =
+                new ArrayList<>();
+        private final ArrayList<IMediaRouter2ManagerClient> mTempManagers = new ArrayList<>();
+
         private boolean mRunning;
         private int mDiscoveryMode = RemoteDisplayState.DISCOVERY_MODE_NONE;
         private RouteRecord mSelectedRouteRecord;
@@ -826,6 +1031,8 @@
             mUserRecord = userRecord;
             mWatcher = new RemoteDisplayProviderWatcher(service.mContext, this,
                     this, mUserRecord.mUserId);
+            mMediaWatcher = new MediaRoute2ProviderWatcher(service.mContext, this,
+                    this, mUserRecord.mUserId);
         }
 
         @Override
@@ -867,6 +1074,15 @@
                     connectionTimedOut();
                     break;
                 }
+                case MSG_SELECT_REMOTE_ROUTE: {
+                    Pair<Integer, String> obj = (Pair<Integer, String>) msg.obj;
+                    selectRemoteRoute(obj.first, obj.second);
+                    break;
+                }
+                case MSG_UPDATE_CLIENT_USAGE: {
+                    updateClientUsage((ClientRecord) msg.obj);
+                    break;
+                }
             }
         }
 
@@ -898,6 +1114,7 @@
             if (!mRunning) {
                 mRunning = true;
                 mWatcher.start(); // also starts all providers
+                mMediaWatcher.start();
             }
         }
 
@@ -906,6 +1123,7 @@
                 mRunning = false;
                 unselectSelectedRoute();
                 mWatcher.stop(); // also stops all providers
+                mMediaWatcher.stop();
             }
         }
 
@@ -1037,6 +1255,26 @@
             }
         }
 
+        @Override
+        public void addProvider(MediaRoute2ProviderProxy provider) {
+            provider.setCallback(this);
+            mMediaProviders.add(provider);
+        }
+
+        @Override
+        public void removeProvider(MediaRoute2ProviderProxy provider) {
+            mMediaProviders.remove(provider);
+        }
+
+        @Override
+        public void onProviderStateChanged(MediaRoute2ProviderProxy provider) {
+            updateProvider(provider);
+        }
+
+        private void updateProvider(MediaRoute2ProviderProxy provider) {
+            scheduleUpdateClientState();
+        }
+
         /**
          * This function is called whenever the state of the selected route may have changed.
          * It checks the state and updates timeouts or unselects the route as appropriate.
@@ -1147,6 +1385,17 @@
             unselectSelectedRoute();
         }
 
+        private void selectRemoteRoute(int uid, String routeId) {
+            if (routeId != null) {
+                final int providerCount = mMediaProviders.size();
+
+                //TODO: should find proper provider (currently assumes a single provider)
+                for (int i = 0; i < providerCount; ++i) {
+                    mMediaProviders.get(i).setSelectedRoute(uid, routeId);
+                }
+            }
+        }
+
         private void scheduleUpdateClientState() {
             if (!mClientStateUpdateScheduled) {
                 mClientStateUpdateScheduled = true;
@@ -1164,6 +1413,15 @@
                 mProviderRecords.get(i).appendClientState(routerState);
             }
 
+            //TODO: send provider info
+            int selectedUid = 0;
+            String selectedRouteId = null;
+            final int mediaCount = mMediaProviders.size();
+            for (int i = 0; i < mediaCount; i++) {
+                selectedUid = mMediaProviders.get(i).mSelectedUid;
+                selectedRouteId = mMediaProviders.get(i).mSelectedRouteId;
+            }
+
             try {
                 synchronized (mService.mLock) {
                     // Update the UserRecord.
@@ -1174,6 +1432,11 @@
                     for (int i = 0; i < count; i++) {
                         mTempClients.add(mUserRecord.mClientRecords.get(i).mClient);
                     }
+
+                    final int count2 = mUserRecord.mManagerRecords.size();
+                    for (int i = 0; i < count2; i++) {
+                        mTempManagers.add(mUserRecord.mManagerRecords.get(i).mClient);
+                    }
                 }
 
                 // Notify all clients (outside of the lock).
@@ -1185,9 +1448,39 @@
                         Slog.w(TAG, "Failed to call onStateChanged. Client probably died.");
                     }
                 }
+                //TODO: Call proper callbacks when provider descriptor is implemented.
+                final int count2 = mTempManagers.size();
+                for (int i = 0; i < count2; i++) {
+                    try {
+                        mTempManagers.get(i).onRouteSelected(selectedUid, selectedRouteId);
+                    } catch (RemoteException ex) {
+                        Slog.w(TAG, "Failed to call onStateChanged. Manager probably died.", ex);
+                    }
+                }
             } finally {
                 // Clear the list in preparation for the next time.
                 mTempClients.clear();
+                mTempManagers.clear();
+            }
+        }
+
+        private void updateClientUsage(ClientRecord clientRecord) {
+            List<IMediaRouter2ManagerClient> managers = new ArrayList<>();
+            synchronized (mService.mLock) {
+                final int count = mUserRecord.mManagerRecords.size();
+                for (int i = 0; i < count; i++) {
+                    managers.add(mUserRecord.mManagerRecords.get(i).mClient);
+                }
+            }
+            final int count = managers.size();
+            for (int i = 0; i < count; i++) {
+                try {
+                    managers.get(i).onControlCategoriesChanged(clientRecord.mUid,
+                            clientRecord.mControlCategories);
+                } catch (RemoteException ex) {
+                    Slog.w(TAG, "Failed to call onControlCategoriesChanged. "
+                            + "Manager probably died.", ex);
+                }
             }
         }
 
@@ -1574,4 +1867,5 @@
             }
         }
     }
+
 }