1/*
2 * Copyright (C) 2016 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.settingslib.bluetooth;
18
19import android.bluetooth.BluetoothHeadsetClient;
20import android.bluetooth.BluetoothAdapter;
21import android.bluetooth.BluetoothClass;
22import android.bluetooth.BluetoothDevice;
23import android.bluetooth.BluetoothProfile;
24import android.bluetooth.BluetoothUuid;
25import android.content.Context;
26import android.os.ParcelUuid;
27import android.util.Log;
28
29import com.android.settingslib.R;
30
31import java.util.ArrayList;
32import java.util.List;
33
34/**
35 * Handles the Handsfree HF role.
36 */
37final class HfpClientProfile implements LocalBluetoothProfile {
38    private static final String TAG = "HfpClientProfile";
39    private static boolean V = false;
40
41    private BluetoothHeadsetClient mService;
42    private boolean mIsProfileReady;
43
44    private final LocalBluetoothAdapter mLocalAdapter;
45    private final CachedBluetoothDeviceManager mDeviceManager;
46
47    static final ParcelUuid[] SRC_UUIDS = {
48        BluetoothUuid.HSP_AG,
49        BluetoothUuid.Handsfree_AG,
50    };
51
52    static final String NAME = "HEADSET_CLIENT";
53    private final LocalBluetoothProfileManager mProfileManager;
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 HfpClientServiceListener
60            implements BluetoothProfile.ServiceListener {
61
62        @Override
63        public void onServiceConnected(int profile, BluetoothProfile proxy) {
64            if (V) Log.d(TAG,"Bluetooth service connected");
65            mService = (BluetoothHeadsetClient) proxy;
66            // We just bound to the service, so refresh the UI for any connected HFP devices.
67            List<BluetoothDevice> deviceList = mService.getConnectedDevices();
68            while (!deviceList.isEmpty()) {
69                BluetoothDevice nextDevice = deviceList.remove(0);
70                CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
71                // we may add a new device here, but generally this should not happen
72                if (device == null) {
73                    Log.w(TAG, "HfpClient profile found new device: " + nextDevice);
74                    device = mDeviceManager.addDevice(mLocalAdapter, mProfileManager, nextDevice);
75                }
76                device.onProfileStateChanged(
77                    HfpClientProfile.this, BluetoothProfile.STATE_CONNECTED);
78                device.refresh();
79            }
80            mIsProfileReady=true;
81        }
82
83        @Override
84        public void onServiceDisconnected(int profile) {
85            if (V) Log.d(TAG,"Bluetooth service disconnected");
86            mIsProfileReady=false;
87        }
88    }
89
90    @Override
91    public boolean isProfileReady() {
92        return mIsProfileReady;
93    }
94
95    HfpClientProfile(Context context, LocalBluetoothAdapter adapter,
96            CachedBluetoothDeviceManager deviceManager,
97            LocalBluetoothProfileManager profileManager) {
98        mLocalAdapter = adapter;
99        mDeviceManager = deviceManager;
100        mProfileManager = profileManager;
101        mLocalAdapter.getProfileProxy(context, new HfpClientServiceListener(),
102                BluetoothProfile.HEADSET_CLIENT);
103    }
104
105    @Override
106    public boolean isConnectable() {
107        return true;
108    }
109
110    @Override
111    public boolean isAutoConnectable() {
112        return true;
113    }
114
115    public List<BluetoothDevice> getConnectedDevices() {
116        if (mService == null) return new ArrayList<BluetoothDevice>(0);
117        return mService.getDevicesMatchingConnectionStates(
118              new int[] {BluetoothProfile.STATE_CONNECTED,
119                         BluetoothProfile.STATE_CONNECTING,
120                         BluetoothProfile.STATE_DISCONNECTING});
121    }
122
123    @Override
124    public boolean connect(BluetoothDevice device) {
125        if (mService == null) return false;
126        List<BluetoothDevice> srcs = getConnectedDevices();
127        if (srcs != null) {
128            for (BluetoothDevice src : srcs) {
129                if (src.equals(device)) {
130                    // Connect to same device, Ignore it
131                    Log.d(TAG,"Ignoring Connect");
132                    return true;
133                }
134            }
135            // Handsfree HF only supports one source connection and hence it is OK to disconnect
136            // the only connected device here.
137            for (BluetoothDevice src : srcs) {
138                mService.disconnect(src);
139            }
140        }
141        return mService.connect(device);
142    }
143
144    @Override
145    public boolean disconnect(BluetoothDevice device) {
146        if (mService == null) return false;
147        // Downgrade priority as user is disconnecting the headset.
148        if (mService.getPriority(device) > BluetoothProfile.PRIORITY_ON){
149            mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
150        }
151        return mService.disconnect(device);
152    }
153
154    @Override
155    public int getConnectionStatus(BluetoothDevice device) {
156        if (mService == null) {
157            return BluetoothProfile.STATE_DISCONNECTED;
158        }
159        return mService.getConnectionState(device);
160    }
161
162    @Override
163    public boolean isPreferred(BluetoothDevice device) {
164        if (mService == null) return false;
165        return mService.getPriority(device) > BluetoothProfile.PRIORITY_OFF;
166    }
167
168    @Override
169    public int getPreferred(BluetoothDevice device) {
170        if (mService == null) return BluetoothProfile.PRIORITY_OFF;
171        return mService.getPriority(device);
172    }
173
174    @Override
175    public void setPreferred(BluetoothDevice device, boolean preferred) {
176        if (mService == null) return;
177        if (preferred) {
178            if (mService.getPriority(device) < BluetoothProfile.PRIORITY_ON) {
179                mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
180            }
181        } else {
182            mService.setPriority(device, BluetoothProfile.PRIORITY_OFF);
183        }
184    }
185
186    @Override
187    public String toString() {
188        return NAME;
189    }
190
191    @Override
192    public int getOrdinal() {
193        return ORDINAL;
194    }
195
196    @Override
197    public int getNameResource(BluetoothDevice device) {
198        return R.string.bluetooth_profile_headset;
199    }
200
201    @Override
202    public int getSummaryResourceForDevice(BluetoothDevice device) {
203        int state = getConnectionStatus(device);
204        switch (state) {
205            case BluetoothProfile.STATE_DISCONNECTED:
206                return R.string.bluetooth_headset_profile_summary_use_for;
207
208            case BluetoothProfile.STATE_CONNECTED:
209                return R.string.bluetooth_headset_profile_summary_connected;
210
211            default:
212                return Utils.getConnectionStateSummary(state);
213        }
214    }
215
216    @Override
217    public int getDrawableResource(BluetoothClass btClass) {
218        return R.drawable.ic_bt_headset_hfp;
219    }
220
221    protected void finalize() {
222        if (V) Log.d(TAG, "finalize()");
223        if (mService != null) {
224            try {
225                BluetoothAdapter.getDefaultAdapter().closeProfileProxy(
226                    BluetoothProfile.HEADSET_CLIENT, mService);
227                mService = null;
228            } catch (Throwable t) {
229                Log.w(TAG, "Error cleaning up HfpClient proxy", t);
230            }
231        }
232    }
233}
234