1/*
2 * Copyright (C) 2012 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 android.bluetooth.BluetoothAdapter;
20import android.bluetooth.BluetoothClass;
21import android.bluetooth.BluetoothDevice;
22import android.bluetooth.BluetoothHeadset;
23import android.bluetooth.BluetoothProfile;
24import android.bluetooth.BluetoothUuid;
25import android.content.Context;
26import android.os.ParcelUuid;
27import android.util.Log;
28
29import com.android.settings.R;
30
31import java.util.ArrayList;
32import java.util.List;
33
34/**
35 * HeadsetProfile handles Bluetooth HFP and Headset profiles.
36 */
37final class HeadsetProfile implements LocalBluetoothProfile {
38    private static final String TAG = "HeadsetProfile";
39    private static boolean V = true;
40
41    private BluetoothHeadset mService;
42    private boolean mIsProfileReady;
43
44    private final LocalBluetoothAdapter mLocalAdapter;
45    private final CachedBluetoothDeviceManager mDeviceManager;
46    private final LocalBluetoothProfileManager mProfileManager;
47
48    static final ParcelUuid[] UUIDS = {
49        BluetoothUuid.HSP,
50        BluetoothUuid.Handsfree,
51    };
52
53    static final String NAME = "HEADSET";
54
55    // Order of this profile in device profiles list
56    private static final int ORDINAL = 0;
57
58    // These callbacks run on the main thread.
59    private final class HeadsetServiceListener
60            implements BluetoothProfile.ServiceListener {
61
62        public void onServiceConnected(int profile, BluetoothProfile proxy) {
63            if (V) Log.d(TAG,"Bluetooth service connected");
64            mService = (BluetoothHeadset) proxy;
65            // We just bound to the service, so refresh the UI for any connected HFP devices.
66            List<BluetoothDevice> deviceList = mService.getConnectedDevices();
67            while (!deviceList.isEmpty()) {
68                BluetoothDevice nextDevice = deviceList.remove(0);
69                CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
70                // we may add a new device here, but generally this should not happen
71                if (device == null) {
72                    Log.w(TAG, "HeadsetProfile found new device: " + nextDevice);
73                    device = mDeviceManager.addDevice(mLocalAdapter, mProfileManager, nextDevice);
74                }
75                device.onProfileStateChanged(HeadsetProfile.this,
76                        BluetoothProfile.STATE_CONNECTED);
77                device.refresh();
78            }
79
80            mProfileManager.callServiceConnectedListeners();
81            mIsProfileReady=true;
82        }
83
84        public void onServiceDisconnected(int profile) {
85            if (V) Log.d(TAG,"Bluetooth service disconnected");
86            mProfileManager.callServiceDisconnectedListeners();
87            mIsProfileReady=false;
88        }
89    }
90
91    public boolean isProfileReady() {
92        return mIsProfileReady;
93    }
94
95    HeadsetProfile(Context context, LocalBluetoothAdapter adapter,
96            CachedBluetoothDeviceManager deviceManager,
97            LocalBluetoothProfileManager profileManager) {
98        mLocalAdapter = adapter;
99        mDeviceManager = deviceManager;
100        mProfileManager = profileManager;
101        mLocalAdapter.getProfileProxy(context, new HeadsetServiceListener(),
102                BluetoothProfile.HEADSET);
103    }
104
105    public boolean isConnectable() {
106        return true;
107    }
108
109    public boolean isAutoConnectable() {
110        return true;
111    }
112
113    public boolean connect(BluetoothDevice device) {
114        if (mService == null) return false;
115        List<BluetoothDevice> sinks = mService.getConnectedDevices();
116        if (sinks != null) {
117            for (BluetoothDevice sink : sinks) {
118                mService.disconnect(sink);
119            }
120        }
121        return mService.connect(device);
122    }
123
124    public boolean disconnect(BluetoothDevice device) {
125        if (mService == null) return false;
126        List<BluetoothDevice> deviceList = mService.getConnectedDevices();
127        if (!deviceList.isEmpty() && deviceList.get(0).equals(device)) {
128            // Downgrade priority as user is disconnecting the headset.
129            if (mService.getPriority(device) > BluetoothProfile.PRIORITY_ON) {
130                mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
131            }
132            return mService.disconnect(device);
133        } else {
134            return false;
135        }
136    }
137
138    public int getConnectionStatus(BluetoothDevice device) {
139        if (mService == null) return BluetoothProfile.STATE_DISCONNECTED;
140        List<BluetoothDevice> deviceList = mService.getConnectedDevices();
141
142        return !deviceList.isEmpty() && deviceList.get(0).equals(device)
143                ? mService.getConnectionState(device)
144                : BluetoothProfile.STATE_DISCONNECTED;
145    }
146
147    public boolean isPreferred(BluetoothDevice device) {
148        if (mService == null) return false;
149        return mService.getPriority(device) > BluetoothProfile.PRIORITY_OFF;
150    }
151
152    public int getPreferred(BluetoothDevice device) {
153        if (mService == null) return BluetoothProfile.PRIORITY_OFF;
154        return mService.getPriority(device);
155    }
156
157    public void setPreferred(BluetoothDevice device, boolean preferred) {
158        if (mService == null) return;
159        if (preferred) {
160            if (mService.getPriority(device) < BluetoothProfile.PRIORITY_ON) {
161                mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
162            }
163        } else {
164            mService.setPriority(device, BluetoothProfile.PRIORITY_OFF);
165        }
166    }
167
168    public List<BluetoothDevice> getConnectedDevices() {
169        if (mService == null) return new ArrayList<BluetoothDevice>(0);
170        return mService.getDevicesMatchingConnectionStates(
171              new int[] {BluetoothProfile.STATE_CONNECTED,
172                         BluetoothProfile.STATE_CONNECTING,
173                         BluetoothProfile.STATE_DISCONNECTING});
174    }
175
176    public String toString() {
177        return NAME;
178    }
179
180    public int getOrdinal() {
181        return ORDINAL;
182    }
183
184    public int getNameResource(BluetoothDevice device) {
185        return R.string.bluetooth_profile_headset;
186    }
187
188    public int getSummaryResourceForDevice(BluetoothDevice device) {
189        int state = getConnectionStatus(device);
190        switch (state) {
191            case BluetoothProfile.STATE_DISCONNECTED:
192                return R.string.bluetooth_headset_profile_summary_use_for;
193
194            case BluetoothProfile.STATE_CONNECTED:
195                return R.string.bluetooth_headset_profile_summary_connected;
196
197            default:
198                return Utils.getConnectionStateSummary(state);
199        }
200    }
201
202    public int getDrawableResource(BluetoothClass btClass) {
203        return R.drawable.ic_bt_headset_hfp;
204    }
205
206    protected void finalize() {
207        if (V) Log.d(TAG, "finalize()");
208        if (mService != null) {
209            try {
210                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.HEADSET,
211                                                                       mService);
212                mService = null;
213            }catch (Throwable t) {
214                Log.w(TAG, "Error cleaning up HID proxy", t);
215            }
216        }
217    }
218}
219