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      1 /*
      2  * Copyright (C) 2011 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.BluetoothA2dp;
     20 import android.bluetooth.BluetoothAdapter;
     21 import android.bluetooth.BluetoothClass;
     22 import android.bluetooth.BluetoothDevice;
     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 final class A2dpProfile implements LocalBluetoothProfile {
     35     private static final String TAG = "A2dpProfile";
     36     private static boolean V = true;
     37 
     38     private BluetoothA2dp mService;
     39     private boolean mIsProfileReady;
     40 
     41     private final LocalBluetoothAdapter mLocalAdapter;
     42     private final CachedBluetoothDeviceManager mDeviceManager;
     43 
     44     static final ParcelUuid[] SINK_UUIDS = {
     45         BluetoothUuid.AudioSink,
     46         BluetoothUuid.AdvAudioDist,
     47     };
     48 
     49     static final String NAME = "A2DP";
     50     private final LocalBluetoothProfileManager mProfileManager;
     51 
     52     // Order of this profile in device profiles list
     53     private static final int ORDINAL = 1;
     54 
     55     // These callbacks run on the main thread.
     56     private final class A2dpServiceListener
     57             implements BluetoothProfile.ServiceListener {
     58 
     59         public void onServiceConnected(int profile, BluetoothProfile proxy) {
     60             if (V) Log.d(TAG,"Bluetooth service connected");
     61             mService = (BluetoothA2dp) proxy;
     62             // We just bound to the service, so refresh the UI for any connected A2DP devices.
     63             List<BluetoothDevice> deviceList = mService.getConnectedDevices();
     64             while (!deviceList.isEmpty()) {
     65                 BluetoothDevice nextDevice = deviceList.remove(0);
     66                 CachedBluetoothDevice device = mDeviceManager.findDevice(nextDevice);
     67                 // we may add a new device here, but generally this should not happen
     68                 if (device == null) {
     69                     Log.w(TAG, "A2dpProfile found new device: " + nextDevice);
     70                     device = mDeviceManager.addDevice(mLocalAdapter, mProfileManager, nextDevice);
     71                 }
     72                 device.onProfileStateChanged(A2dpProfile.this, BluetoothProfile.STATE_CONNECTED);
     73                 device.refresh();
     74             }
     75             mIsProfileReady=true;
     76         }
     77 
     78         public void onServiceDisconnected(int profile) {
     79             if (V) Log.d(TAG,"Bluetooth service disconnected");
     80             mIsProfileReady=false;
     81         }
     82     }
     83 
     84     public boolean isProfileReady() {
     85         return mIsProfileReady;
     86     }
     87 
     88     A2dpProfile(Context context, LocalBluetoothAdapter adapter,
     89             CachedBluetoothDeviceManager deviceManager,
     90             LocalBluetoothProfileManager profileManager) {
     91         mLocalAdapter = adapter;
     92         mDeviceManager = deviceManager;
     93         mProfileManager = profileManager;
     94         mLocalAdapter.getProfileProxy(context, new A2dpServiceListener(),
     95                 BluetoothProfile.A2DP);
     96     }
     97 
     98     public boolean isConnectable() {
     99         return true;
    100     }
    101 
    102     public boolean isAutoConnectable() {
    103         return true;
    104     }
    105 
    106     public List<BluetoothDevice> getConnectedDevices() {
    107         if (mService == null) return new ArrayList<BluetoothDevice>(0);
    108         return mService.getDevicesMatchingConnectionStates(
    109               new int[] {BluetoothProfile.STATE_CONNECTED,
    110                          BluetoothProfile.STATE_CONNECTING,
    111                          BluetoothProfile.STATE_DISCONNECTING});
    112     }
    113 
    114     public boolean connect(BluetoothDevice device) {
    115         if (mService == null) return false;
    116         List<BluetoothDevice> sinks = getConnectedDevices();
    117         if (sinks != null) {
    118             for (BluetoothDevice sink : sinks) {
    119                 mService.disconnect(sink);
    120             }
    121         }
    122         return mService.connect(device);
    123     }
    124 
    125     public boolean disconnect(BluetoothDevice device) {
    126         if (mService == null) return false;
    127         // Downgrade priority as user is disconnecting the headset.
    128         if (mService.getPriority(device) > BluetoothProfile.PRIORITY_ON){
    129             mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
    130         }
    131         return mService.disconnect(device);
    132     }
    133 
    134     public int getConnectionStatus(BluetoothDevice device) {
    135         if (mService == null) {
    136             return BluetoothProfile.STATE_DISCONNECTED;
    137         }
    138         return mService.getConnectionState(device);
    139     }
    140 
    141     public boolean isPreferred(BluetoothDevice device) {
    142         if (mService == null) return false;
    143         return mService.getPriority(device) > BluetoothProfile.PRIORITY_OFF;
    144     }
    145 
    146     public int getPreferred(BluetoothDevice device) {
    147         if (mService == null) return BluetoothProfile.PRIORITY_OFF;
    148         return mService.getPriority(device);
    149     }
    150 
    151     public void setPreferred(BluetoothDevice device, boolean preferred) {
    152         if (mService == null) return;
    153         if (preferred) {
    154             if (mService.getPriority(device) < BluetoothProfile.PRIORITY_ON) {
    155                 mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
    156             }
    157         } else {
    158             mService.setPriority(device, BluetoothProfile.PRIORITY_OFF);
    159         }
    160     }
    161     boolean isA2dpPlaying() {
    162         if (mService == null) return false;
    163         List<BluetoothDevice> sinks = mService.getConnectedDevices();
    164         if (!sinks.isEmpty()) {
    165             if (mService.isA2dpPlaying(sinks.get(0))) {
    166                 return true;
    167             }
    168         }
    169         return false;
    170     }
    171 
    172     public String toString() {
    173         return NAME;
    174     }
    175 
    176     public int getOrdinal() {
    177         return ORDINAL;
    178     }
    179 
    180     public int getNameResource(BluetoothDevice device) {
    181         return R.string.bluetooth_profile_a2dp;
    182     }
    183 
    184     public int getSummaryResourceForDevice(BluetoothDevice device) {
    185         int state = getConnectionStatus(device);
    186         switch (state) {
    187             case BluetoothProfile.STATE_DISCONNECTED:
    188                 return R.string.bluetooth_a2dp_profile_summary_use_for;
    189 
    190             case BluetoothProfile.STATE_CONNECTED:
    191                 return R.string.bluetooth_a2dp_profile_summary_connected;
    192 
    193             default:
    194                 return Utils.getConnectionStateSummary(state);
    195         }
    196     }
    197 
    198     public int getDrawableResource(BluetoothClass btClass) {
    199         return R.drawable.ic_bt_headphones_a2dp;
    200     }
    201 
    202     protected void finalize() {
    203         if (V) Log.d(TAG, "finalize()");
    204         if (mService != null) {
    205             try {
    206                 BluetoothAdapter.getDefaultAdapter().closeProfileProxy(BluetoothProfile.A2DP,
    207                                                                        mService);
    208                 mService = null;
    209             }catch (Throwable t) {
    210                 Log.w(TAG, "Error cleaning up A2DP proxy", t);
    211             }
    212         }
    213     }
    214 }
    215