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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 
     28 import com.android.settings.R;
     29 
     30 import java.util.List;
     31 
     32 /**
     33  * A2dpProfile handles Bluetooth A2DP.
     34  * TODO: add null checks around calls to mService object.
     35  */
     36 final class A2dpProfile implements LocalBluetoothProfile {
     37     private BluetoothA2dp mService;
     38 
     39     static final ParcelUuid[] SINK_UUIDS = {
     40         BluetoothUuid.AudioSink,
     41         BluetoothUuid.AdvAudioDist,
     42     };
     43 
     44     static final String NAME = "A2DP";
     45 
     46     // Order of this profile in device profiles list
     47     private static final int ORDINAL = 1;
     48 
     49     // These callbacks run on the main thread.
     50     private final class A2dpServiceListener
     51             implements BluetoothProfile.ServiceListener {
     52 
     53         public void onServiceConnected(int profile, BluetoothProfile proxy) {
     54             mService = (BluetoothA2dp) proxy;
     55         }
     56 
     57         public void onServiceDisconnected(int profile) {
     58             mService = null;
     59         }
     60     }
     61 
     62     A2dpProfile(Context context) {
     63         BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
     64         adapter.getProfileProxy(context, new A2dpServiceListener(),
     65                 BluetoothProfile.A2DP);
     66     }
     67 
     68     public boolean isConnectable() {
     69         return true;
     70     }
     71 
     72     public boolean isAutoConnectable() {
     73         return true;
     74     }
     75 
     76     private List<BluetoothDevice> getConnectedDevices() {
     77         return mService.getDevicesMatchingConnectionStates(
     78               new int[] {BluetoothProfile.STATE_CONNECTED,
     79                          BluetoothProfile.STATE_CONNECTING,
     80                          BluetoothProfile.STATE_DISCONNECTING});
     81     }
     82 
     83     public boolean connect(BluetoothDevice device) {
     84         List<BluetoothDevice> sinks = getConnectedDevices();
     85         if (sinks != null) {
     86             for (BluetoothDevice sink : sinks) {
     87                 mService.disconnect(sink);
     88             }
     89         }
     90         return mService.connect(device);
     91     }
     92 
     93     public boolean disconnect(BluetoothDevice device) {
     94         return mService.disconnect(device);
     95     }
     96 
     97     public int getConnectionStatus(BluetoothDevice device) {
     98         return mService.getConnectionState(device);
     99     }
    100 
    101     public boolean isPreferred(BluetoothDevice device) {
    102         return mService.getPriority(device) > BluetoothProfile.PRIORITY_OFF;
    103     }
    104 
    105     public int getPreferred(BluetoothDevice device) {
    106         return mService.getPriority(device);
    107     }
    108 
    109     public void setPreferred(BluetoothDevice device, boolean preferred) {
    110         if (preferred) {
    111             if (mService.getPriority(device) < BluetoothProfile.PRIORITY_ON) {
    112                 mService.setPriority(device, BluetoothProfile.PRIORITY_ON);
    113             }
    114         } else {
    115             mService.setPriority(device, BluetoothProfile.PRIORITY_OFF);
    116         }
    117     }
    118 
    119     boolean isA2dpPlaying() {
    120         List<BluetoothDevice> sinks = mService.getConnectedDevices();
    121         if (!sinks.isEmpty()) {
    122             if (mService.isA2dpPlaying(sinks.get(0))) {
    123                 return true;
    124             }
    125         }
    126         return false;
    127     }
    128 
    129     public boolean isProfileReady() {
    130         return mService != null;
    131     }
    132 
    133     public String toString() {
    134         return NAME;
    135     }
    136 
    137     public int getOrdinal() {
    138         return ORDINAL;
    139     }
    140 
    141     public int getNameResource(BluetoothDevice device) {
    142         return R.string.bluetooth_profile_a2dp;
    143     }
    144 
    145     public int getSummaryResourceForDevice(BluetoothDevice device) {
    146         int state = mService.getConnectionState(device);
    147         switch (state) {
    148             case BluetoothProfile.STATE_DISCONNECTED:
    149                 return R.string.bluetooth_a2dp_profile_summary_use_for;
    150 
    151             case BluetoothProfile.STATE_CONNECTED:
    152                 return R.string.bluetooth_a2dp_profile_summary_connected;
    153 
    154             default:
    155                 return Utils.getConnectionStateSummary(state);
    156         }
    157     }
    158 
    159     public int getDrawableResource(BluetoothClass btClass) {
    160         return R.drawable.ic_bt_headphones_a2dp;
    161     }
    162 }
    163