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      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 
     17 package com.android.settings.bluetooth;
     18 
     19 import android.bluetooth.BluetoothAdapter;
     20 import android.bluetooth.BluetoothClass;
     21 import android.bluetooth.BluetoothDevice;
     22 import android.bluetooth.BluetoothHeadset;
     23 import android.bluetooth.BluetoothProfile;
     24 import android.bluetooth.BluetoothUuid;
     25 import android.content.Context;
     26 import android.os.ParcelUuid;
     27 import android.util.Log;
     28 
     29 import com.android.settings.R;
     30 
     31 import java.util.ArrayList;
     32 import java.util.List;
     33 
     34 /**
     35  * HeadsetProfile handles Bluetooth HFP and Headset profiles.
     36  */
     37 final 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