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      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 
     17 package com.android.server.telecom.bluetooth;
     18 
     19 import android.bluetooth.BluetoothDevice;
     20 import android.bluetooth.BluetoothHeadset;
     21 import android.bluetooth.BluetoothManager;
     22 import android.bluetooth.BluetoothProfile;
     23 import android.content.BroadcastReceiver;
     24 import android.content.Context;
     25 import android.content.Intent;
     26 import android.content.IntentFilter;
     27 import android.telecom.Log;
     28 
     29 import com.android.server.telecom.BluetoothAdapterProxy;
     30 import com.android.server.telecom.BluetoothHeadsetProxy;
     31 import com.android.server.telecom.TelecomSystem;
     32 
     33 import java.util.Collection;
     34 import java.util.LinkedHashMap;
     35 import java.util.LinkedList;
     36 import java.util.List;
     37 import java.util.Map;
     38 import java.util.Objects;
     39 import java.util.stream.Collectors;
     40 
     41 public class BluetoothDeviceManager {
     42     private final BluetoothProfile.ServiceListener mBluetoothProfileServiceListener =
     43             new BluetoothProfile.ServiceListener() {
     44                 @Override
     45                 public void onServiceConnected(int profile, BluetoothProfile proxy) {
     46                     Log.startSession("BMSL.oSC");
     47                     try {
     48                         synchronized (mLock) {
     49                             if (profile == BluetoothProfile.HEADSET) {
     50                                 mBluetoothHeadsetService =
     51                                         new BluetoothHeadsetProxy((BluetoothHeadset) proxy);
     52                                 Log.i(this, "- Got BluetoothHeadset: " + mBluetoothHeadsetService);
     53                             } else {
     54                                 Log.w(this, "Connected to non-headset bluetooth service." +
     55                                         " Not changing bluetooth headset.");
     56                             }
     57                         }
     58                     } finally {
     59                         Log.endSession();
     60                     }
     61                 }
     62 
     63                 @Override
     64                 public void onServiceDisconnected(int profile) {
     65                     Log.startSession("BMSL.oSD");
     66                     try {
     67                         synchronized (mLock) {
     68                             mBluetoothHeadsetService = null;
     69                             Log.i(BluetoothDeviceManager.this, "Lost BluetoothHeadset service. " +
     70                                     "Removing all tracked devices.");
     71                             List<BluetoothDevice> devicesToRemove = new LinkedList<>(
     72                                     mConnectedDevicesByAddress.values());
     73                             mConnectedDevicesByAddress.clear();
     74                             for (BluetoothDevice device : devicesToRemove) {
     75                                 mBluetoothRouteManager.onDeviceLost(device.getAddress());
     76                             }
     77                         }
     78                     } finally {
     79                         Log.endSession();
     80                     }
     81                 }
     82            };
     83 
     84     private final LinkedHashMap<String, BluetoothDevice> mConnectedDevicesByAddress =
     85             new LinkedHashMap<>();
     86     private final TelecomSystem.SyncRoot mLock;
     87 
     88     private BluetoothRouteManager mBluetoothRouteManager;
     89     private BluetoothHeadsetProxy mBluetoothHeadsetService;
     90 
     91     public BluetoothDeviceManager(Context context, BluetoothAdapterProxy bluetoothAdapter,
     92             TelecomSystem.SyncRoot lock) {
     93         mLock = lock;
     94 
     95         if (bluetoothAdapter != null) {
     96             bluetoothAdapter.getProfileProxy(context, mBluetoothProfileServiceListener,
     97                     BluetoothProfile.HEADSET);
     98         }
     99     }
    100 
    101     public void setBluetoothRouteManager(BluetoothRouteManager brm) {
    102         mBluetoothRouteManager = brm;
    103     }
    104 
    105     public int getNumConnectedDevices() {
    106         return mConnectedDevicesByAddress.size();
    107     }
    108 
    109     public Collection<BluetoothDevice> getConnectedDevices() {
    110         return mConnectedDevicesByAddress.values();
    111     }
    112 
    113     public String getMostRecentlyConnectedDevice(String excludeAddress) {
    114         String result = null;
    115         synchronized (mLock) {
    116             for (String addr : mConnectedDevicesByAddress.keySet()) {
    117                 if (!Objects.equals(addr, excludeAddress)) {
    118                     result = addr;
    119                 }
    120             }
    121         }
    122         return result;
    123     }
    124 
    125     public BluetoothHeadsetProxy getHeadsetService() {
    126         return mBluetoothHeadsetService;
    127     }
    128 
    129     public void setHeadsetServiceForTesting(BluetoothHeadsetProxy bluetoothHeadset) {
    130         mBluetoothHeadsetService = bluetoothHeadset;
    131     }
    132 
    133     public BluetoothDevice getDeviceFromAddress(String address) {
    134         return mConnectedDevicesByAddress.get(address);
    135     }
    136 
    137     void onDeviceConnected(BluetoothDevice device) {
    138         synchronized (mLock) {
    139             if (!mConnectedDevicesByAddress.containsKey(device.getAddress())) {
    140                 mConnectedDevicesByAddress.put(device.getAddress(), device);
    141                 mBluetoothRouteManager.onDeviceAdded(device.getAddress());
    142             }
    143         }
    144     }
    145 
    146     void onDeviceDisconnected(BluetoothDevice device) {
    147         synchronized (mLock) {
    148             if (mConnectedDevicesByAddress.containsKey(device.getAddress())) {
    149                 mConnectedDevicesByAddress.remove(device.getAddress());
    150                 mBluetoothRouteManager.onDeviceLost(device.getAddress());
    151             }
    152         }
    153     }
    154 }
    155