LocalBluetoothProfileManager.java revision abc48f80d8747b4fc051b7dd364355ee667a9bac 
1/*
2 * Copyright (C) 2008 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.settings.bluetooth;
18
19import com.android.settings.R;
20
21import android.bluetooth.BluetoothA2dp;
22import android.bluetooth.BluetoothError;
23import android.bluetooth.BluetoothHeadset;
24import android.bluetooth.BluetoothClass;
25import android.content.Context;
26import android.content.SharedPreferences;
27
28import java.util.HashMap;
29import java.util.List;
30import java.util.Map;
31
32/**
33 * LocalBluetoothProfileManager is an abstract class defining the basic
34 * functionality related to a profile.
35 */
36public abstract class LocalBluetoothProfileManager {
37
38    // TODO: close profiles when we're shutting down
39    private static Map<Profile, LocalBluetoothProfileManager> sProfileMap =
40            new HashMap<Profile, LocalBluetoothProfileManager>();
41
42    protected LocalBluetoothManager mLocalManager;
43
44    public static LocalBluetoothProfileManager getProfileManager(LocalBluetoothManager localManager,
45            Profile profile) {
46
47        LocalBluetoothProfileManager profileManager;
48
49        synchronized (sProfileMap) {
50            profileManager = sProfileMap.get(profile);
51
52            if (profileManager == null) {
53                switch (profile) {
54                case A2DP:
55                    profileManager = new A2dpProfileManager(localManager);
56                    break;
57
58                case HEADSET:
59                    profileManager = new HeadsetProfileManager(localManager);
60                    break;
61                }
62
63                sProfileMap.put(profile, profileManager);
64            }
65        }
66
67        return profileManager;
68    }
69
70    // TODO: remove once the framework has this API
71    public static boolean isPreferredProfile(Context context, String address, Profile profile) {
72        return getPreferredProfileSharedPreferences(context).getBoolean(
73                getPreferredProfileKey(address, profile), true);
74    }
75
76    public static void setPreferredProfile(Context context, String address, Profile profile,
77            boolean preferred) {
78        getPreferredProfileSharedPreferences(context).edit().putBoolean(
79                getPreferredProfileKey(address, profile), preferred).commit();
80    }
81
82    private static SharedPreferences getPreferredProfileSharedPreferences(Context context) {
83        return context.getSharedPreferences("bluetooth_preferred_profiles", Context.MODE_PRIVATE);
84    }
85
86    private static String getPreferredProfileKey(String address, Profile profile) {
87        return address + "_" + profile.toString();
88    }
89
90    /**
91     * Temporary method to fill profiles based on a device's class.
92     *
93     * @param btClass The class
94     * @param profiles The list of profiles to fill
95     */
96    public static void fill(int btClass, List<Profile> profiles) {
97        profiles.clear();
98
99        if (A2dpProfileManager.doesClassMatch(btClass)) {
100            profiles.add(Profile.A2DP);
101        }
102
103        if (HeadsetProfileManager.doesClassMatch(btClass)) {
104            profiles.add(Profile.HEADSET);
105        }
106    }
107
108    protected LocalBluetoothProfileManager(LocalBluetoothManager localManager) {
109        mLocalManager = localManager;
110    }
111
112    public abstract int connect(String address);
113
114    public abstract int disconnect(String address);
115
116    public abstract int getConnectionStatus(String address);
117
118    public abstract int getSummary(String address);
119
120    public boolean isConnected(String address) {
121        return SettingsBtStatus.isConnectionStatusConnected(getConnectionStatus(address));
122    }
123
124    // TODO: int instead of enum
125    public enum Profile {
126        HEADSET(R.string.bluetooth_profile_headset),
127        A2DP(R.string.bluetooth_profile_a2dp);
128
129        public final int localizedString;
130
131        private Profile(int localizedString) {
132            this.localizedString = localizedString;
133        }
134    }
135
136    /**
137     * A2dpProfileManager is an abstraction for the {@link BluetoothA2dp} service.
138     */
139    private static class A2dpProfileManager extends LocalBluetoothProfileManager {
140        private BluetoothA2dp mService;
141
142        public A2dpProfileManager(LocalBluetoothManager localManager) {
143            super(localManager);
144
145            mService = new BluetoothA2dp(localManager.getContext());
146            // TODO: block until connection?
147        }
148
149        @Override
150        public int connect(String address) {
151            return mService.connectSink(address);
152        }
153
154        @Override
155        public int disconnect(String address) {
156            return mService.disconnectSink(address);
157        }
158
159        static boolean doesClassMatch(int btClass) {
160            if (BluetoothClass.Service.hasService(btClass, BluetoothClass.Service.RENDER)) {
161                return true;
162            }
163
164            // By the specification A2DP sinks must indicate the RENDER service
165            // class, but some do not (Chordette). So match on a few more to be
166            // safe
167            switch (BluetoothClass.Device.getDevice(btClass)) {
168            case BluetoothClass.Device.AUDIO_VIDEO_HIFI_AUDIO:
169            case BluetoothClass.Device.AUDIO_VIDEO_HEADPHONES:
170            case BluetoothClass.Device.AUDIO_VIDEO_LOUDSPEAKER:
171            case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
172                return true;
173
174            default:
175                return false;
176            }
177        }
178
179        @Override
180        public int getConnectionStatus(String address) {
181            return convertState(mService.getSinkState(address));
182        }
183
184        @Override
185        public int getSummary(String address) {
186            int connectionStatus = getConnectionStatus(address);
187
188            if (SettingsBtStatus.isConnectionStatusConnected(connectionStatus)) {
189                return R.string.bluetooth_a2dp_profile_summary_connected;
190            } else {
191                return SettingsBtStatus.getConnectionStatusSummary(connectionStatus);
192            }
193        }
194
195        private static int convertState(int a2dpState) {
196            switch (a2dpState) {
197            case BluetoothA2dp.STATE_CONNECTED:
198                return SettingsBtStatus.CONNECTION_STATUS_CONNECTED;
199            case BluetoothA2dp.STATE_CONNECTING:
200                return SettingsBtStatus.CONNECTION_STATUS_CONNECTING;
201            case BluetoothA2dp.STATE_DISCONNECTED:
202                return SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED;
203            case BluetoothA2dp.STATE_DISCONNECTING:
204                return SettingsBtStatus.CONNECTION_STATUS_DISCONNECTING;
205            case BluetoothA2dp.STATE_PLAYING:
206                return SettingsBtStatus.CONNECTION_STATUS_ACTIVE;
207            default:
208                return SettingsBtStatus.CONNECTION_STATUS_UNKNOWN;
209            }
210        }
211    }
212
213    /**
214     * HeadsetProfileManager is an abstraction for the {@link BluetoothHeadset} service.
215     */
216    private static class HeadsetProfileManager extends LocalBluetoothProfileManager {
217        private BluetoothHeadset mService;
218
219        public HeadsetProfileManager(LocalBluetoothManager localManager) {
220            super(localManager);
221
222//            final boolean[] isServiceConnected = new boolean[1];
223//            BluetoothHeadset.ServiceListener l = new BluetoothHeadset.ServiceListener() {
224//                public void onServiceConnected() {
225//                    synchronized (this) {
226//                        isServiceConnected[0] = true;
227//                        notifyAll();
228//                    }
229//                }
230//                public void onServiceDisconnected() {
231//                    mService = null;
232//                }
233//            };
234
235            // TODO: block, but can't on UI thread
236            mService = new BluetoothHeadset(localManager.getContext(), null);
237
238//            synchronized (l) {
239//                while (!isServiceConnected[0]) {
240//                    try {
241//                        l.wait(100);
242//                    } catch (InterruptedException e) {
243//                        throw new IllegalStateException(e);
244//                    }
245//                }
246//            }
247        }
248
249        @Override
250        public int connect(String address) {
251            // Since connectHeadset fails if already connected to a headset, we
252            // disconnect from any headset first
253            mService.disconnectHeadset();
254            return mService.connectHeadset(address, null)
255                    ? BluetoothError.SUCCESS : BluetoothError.ERROR;
256        }
257
258        @Override
259        public int disconnect(String address) {
260            if (mService.getHeadsetAddress().equals(address)) {
261                return mService.disconnectHeadset() ? BluetoothError.SUCCESS : BluetoothError.ERROR;
262            } else {
263                return BluetoothError.SUCCESS;
264            }
265        }
266
267        static boolean doesClassMatch(int btClass) {
268            switch (BluetoothClass.Device.getDevice(btClass)) {
269            case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE:
270            case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET:
271            case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
272                return true;
273
274            default:
275                return false;
276            }
277        }
278
279        @Override
280        public int getConnectionStatus(String address) {
281            String headsetAddress = mService.getHeadsetAddress();
282            return headsetAddress != null && headsetAddress.equals(address)
283                    ? convertState(mService.getState())
284                    : SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED;
285        }
286
287        @Override
288        public int getSummary(String address) {
289            int connectionStatus = getConnectionStatus(address);
290
291            if (SettingsBtStatus.isConnectionStatusConnected(connectionStatus)) {
292                return R.string.bluetooth_headset_profile_summary_connected;
293            } else {
294                return SettingsBtStatus.getConnectionStatusSummary(connectionStatus);
295            }
296        }
297
298        private static int convertState(int headsetState) {
299            switch (headsetState) {
300            case BluetoothHeadset.STATE_CONNECTED:
301                return SettingsBtStatus.CONNECTION_STATUS_CONNECTED;
302            case BluetoothHeadset.STATE_CONNECTING:
303                return SettingsBtStatus.CONNECTION_STATUS_CONNECTING;
304            case BluetoothHeadset.STATE_DISCONNECTED:
305                return SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED;
306            default:
307                return SettingsBtStatus.CONNECTION_STATUS_UNKNOWN;
308            }
309        }
310    }
311
312}
313