CastControllerImpl.java revision ccb6b9a90f228cc4e31a9442ed28756ff474c080 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.systemui.statusbar.policy;
18
19import android.content.Context;
20import android.media.MediaRouter;
21import android.media.MediaRouter.RouteInfo;
22
23import java.util.ArrayList;
24
25/** Platform implementation of the cast controller. **/
26public class CastControllerImpl implements CastController {
27
28    private final ArrayList<Callback> mCallbacks = new ArrayList<Callback>();
29    private final MediaRouter mMediaRouter;
30
31    private boolean mEnabled;
32    private boolean mConnecting;
33    private String mConnectedRouteName;
34
35    public CastControllerImpl(Context context) {
36        mMediaRouter = (MediaRouter) context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
37    }
38
39    @Override
40    public void addCallback(Callback callback) {
41        mCallbacks.add(callback);
42        fireStateChanged(callback);
43    }
44
45    @Override
46    public void removeCallback(Callback callback) {
47        mCallbacks.remove(callback);
48    }
49
50    @Override
51    public void setDiscovering(boolean request) {
52        if (request) {
53            mMediaRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY,
54                    mMediaCallback,
55                    MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
56        } else {
57            mMediaRouter.removeCallback(mMediaCallback);
58        }
59    }
60
61    @Override
62    public void setCurrentUserId(int currentUserId) {
63        mMediaRouter.rebindAsUser(currentUserId);
64    }
65
66    private void updateRemoteDisplays() {
67        final MediaRouter.RouteInfo connectedRoute = mMediaRouter.getSelectedRoute(
68                MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY);
69        boolean enabled = connectedRoute != null
70                && connectedRoute.matchesTypes(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY);
71        boolean connecting;
72        if (enabled) {
73            connecting = connectedRoute.isConnecting();
74        } else {
75            connecting = false;
76            enabled = mMediaRouter.isRouteAvailable(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY,
77                    MediaRouter.AVAILABILITY_FLAG_IGNORE_DEFAULT_ROUTE);
78        }
79
80        String connectedRouteName = null;
81        if (connectedRoute != null) {
82            connectedRouteName = connectedRoute.getName().toString();
83        }
84        synchronized(mCallbacks) {
85            mEnabled = enabled;
86            mConnecting = connecting;
87            mConnectedRouteName = connectedRouteName;
88        }
89        fireStateChanged();
90    }
91
92    private void fireStateChanged() {
93        for (Callback callback : mCallbacks) {
94            fireStateChanged(callback);
95        }
96    }
97
98    private void fireStateChanged(Callback callback) {
99        synchronized(mCallbacks) {
100            callback.onStateChanged(mEnabled, mConnecting, mConnectedRouteName);
101        }
102    }
103
104    private final MediaRouter.SimpleCallback mMediaCallback = new MediaRouter.SimpleCallback() {
105        @Override
106        public void onRouteAdded(MediaRouter router, RouteInfo route) {
107            updateRemoteDisplays();
108        }
109        @Override
110        public void onRouteChanged(MediaRouter router, RouteInfo route) {
111            updateRemoteDisplays();
112        }
113        @Override
114        public void onRouteRemoved(MediaRouter router, RouteInfo route) {
115            updateRemoteDisplays();
116        }
117        @Override
118        public void onRouteSelected(MediaRouter router, int type, RouteInfo route) {
119            updateRemoteDisplays();
120        }
121        @Override
122        public void onRouteUnselected(MediaRouter router, int type, RouteInfo route) {
123            updateRemoteDisplays();
124        }
125    };
126}
127