LocalBluetoothProfileManager.java revision 1152aff9d0767e528aa4a40cc8acb51b9c21d2e7 
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;
27import android.os.Handler;
28import android.text.TextUtils;
29
30import java.util.HashMap;
31import java.util.List;
32import java.util.Map;
33
34/**
35 * LocalBluetoothProfileManager is an abstract class defining the basic
36 * functionality related to a profile.
37 */
38public abstract class LocalBluetoothProfileManager {
39
40    // TODO: close profiles when we're shutting down
41    private static Map<Profile, LocalBluetoothProfileManager> sProfileMap =
42            new HashMap<Profile, LocalBluetoothProfileManager>();
43
44    protected LocalBluetoothManager mLocalManager;
45
46    public static LocalBluetoothProfileManager getProfileManager(LocalBluetoothManager localManager,
47            Profile profile) {
48
49        LocalBluetoothProfileManager profileManager;
50
51        synchronized (sProfileMap) {
52            profileManager = sProfileMap.get(profile);
53
54            if (profileManager == null) {
55                switch (profile) {
56                case A2DP:
57                    profileManager = new A2dpProfileManager(localManager);
58                    break;
59
60                case HEADSET:
61                    profileManager = new HeadsetProfileManager(localManager);
62                    break;
63                }
64
65                sProfileMap.put(profile, profileManager);
66            }
67        }
68
69        return profileManager;
70    }
71
72    // TODO: remove once the framework has this API
73    public static boolean isPreferredProfile(Context context, String address, Profile profile) {
74        return getPreferredProfileSharedPreferences(context).getBoolean(
75                getPreferredProfileKey(address, profile), true);
76    }
77
78    public static void setPreferredProfile(Context context, String address, Profile profile,
79            boolean preferred) {
80        getPreferredProfileSharedPreferences(context).edit().putBoolean(
81                getPreferredProfileKey(address, profile), preferred).commit();
82    }
83
84    private static SharedPreferences getPreferredProfileSharedPreferences(Context context) {
85        return context.getSharedPreferences("bluetooth_preferred_profiles", Context.MODE_PRIVATE);
86    }
87
88    private static String getPreferredProfileKey(String address, Profile profile) {
89        return address + "_" + profile.toString();
90    }
91
92    /**
93     * Temporary method to fill profiles based on a device's class.
94     *
95     * @param btClass The class
96     * @param profiles The list of profiles to fill
97     */
98    public static void fill(int btClass, List<Profile> profiles) {
99        profiles.clear();
100
101        if (A2dpProfileManager.doesClassMatch(btClass)) {
102            profiles.add(Profile.A2DP);
103        }
104
105        if (HeadsetProfileManager.doesClassMatch(btClass)) {
106            profiles.add(Profile.HEADSET);
107        }
108    }
109
110    protected LocalBluetoothProfileManager(LocalBluetoothManager localManager) {
111        mLocalManager = localManager;
112    }
113
114    public abstract int connect(String address);
115
116    public abstract int disconnect(String address);
117
118    public abstract int getConnectionStatus(String address);
119
120    public abstract int getSummary(String address);
121
122    public boolean isConnected(String address) {
123        return SettingsBtStatus.isConnectionStatusConnected(getConnectionStatus(address));
124    }
125
126    // TODO: int instead of enum
127    public enum Profile {
128        HEADSET(R.string.bluetooth_profile_headset),
129        A2DP(R.string.bluetooth_profile_a2dp);
130
131        public final int localizedString;
132
133        private Profile(int localizedString) {
134            this.localizedString = localizedString;
135        }
136    }
137
138    /**
139     * A2dpProfileManager is an abstraction for the {@link BluetoothA2dp} service.
140     */
141    private static class A2dpProfileManager extends LocalBluetoothProfileManager {
142        private BluetoothA2dp mService;
143
144        public A2dpProfileManager(LocalBluetoothManager localManager) {
145            super(localManager);
146            mService = new BluetoothA2dp(localManager.getContext());
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            implements BluetoothHeadset.ServiceListener {
218        private BluetoothHeadset mService;
219        private Handler mUiHandler = new Handler();
220
221        public HeadsetProfileManager(LocalBluetoothManager localManager) {
222            super(localManager);
223            mService = new BluetoothHeadset(localManager.getContext(), this);
224        }
225
226        public void onServiceConnected() {
227            // This could be called on a non-UI thread, funnel to UI thread.
228            mUiHandler.post(new Runnable() {
229                public void run() {
230                    /*
231                     * We just bound to the service, so refresh the UI of the
232                     * headset device.
233                     */
234                    String address = mService.getHeadsetAddress();
235                    if (TextUtils.isEmpty(address)) return;
236                    mLocalManager.getLocalDeviceManager().onProfileStateChanged(address);
237                }
238            });
239        }
240
241        public void onServiceDisconnected() {
242        }
243
244        @Override
245        public int connect(String address) {
246            // Since connectHeadset fails if already connected to a headset, we
247            // disconnect from any headset first
248            mService.disconnectHeadset();
249            return mService.connectHeadset(address, null)
250                    ? BluetoothError.SUCCESS : BluetoothError.ERROR;
251        }
252
253        @Override
254        public int disconnect(String address) {
255            if (mService.getHeadsetAddress().equals(address)) {
256                return mService.disconnectHeadset() ? BluetoothError.SUCCESS : BluetoothError.ERROR;
257            } else {
258                return BluetoothError.SUCCESS;
259            }
260        }
261
262        static boolean doesClassMatch(int btClass) {
263            switch (BluetoothClass.Device.getDevice(btClass)) {
264            case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE:
265            case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET:
266            case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
267                return true;
268
269            default:
270                return false;
271            }
272        }
273
274        @Override
275        public int getConnectionStatus(String address) {
276            String headsetAddress = mService.getHeadsetAddress();
277            return headsetAddress != null && headsetAddress.equals(address)
278                    ? convertState(mService.getState())
279                    : SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED;
280        }
281
282        @Override
283        public int getSummary(String address) {
284            int connectionStatus = getConnectionStatus(address);
285
286            if (SettingsBtStatus.isConnectionStatusConnected(connectionStatus)) {
287                return R.string.bluetooth_headset_profile_summary_connected;
288            } else {
289                return SettingsBtStatus.getConnectionStatusSummary(connectionStatus);
290            }
291        }
292
293        private static int convertState(int headsetState) {
294            switch (headsetState) {
295            case BluetoothHeadset.STATE_CONNECTED:
296                return SettingsBtStatus.CONNECTION_STATUS_CONNECTED;
297            case BluetoothHeadset.STATE_CONNECTING:
298                return SettingsBtStatus.CONNECTION_STATUS_CONNECTING;
299            case BluetoothHeadset.STATE_DISCONNECTED:
300                return SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED;
301            default:
302                return SettingsBtStatus.CONNECTION_STATUS_UNKNOWN;
303            }
304        }
305    }
306
307}
308