1 /*
2  * Copyright (C) 2023 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.accessibility;
18 
19 import android.bluetooth.BluetoothAdapter;
20 import android.bluetooth.BluetoothDevice;
21 import android.bluetooth.BluetoothProfile;
22 import android.content.Context;
23 
24 import com.android.settingslib.bluetooth.CachedBluetoothDevice;
25 import com.android.settingslib.bluetooth.CachedBluetoothDeviceManager;
26 import com.android.settingslib.bluetooth.HapClientProfile;
27 import com.android.settingslib.bluetooth.HearingAidProfile;
28 import com.android.settingslib.bluetooth.LocalBluetoothManager;
29 import com.android.settingslib.bluetooth.LocalBluetoothProfileManager;
30 
31 import java.util.ArrayList;
32 import java.util.List;
33 import java.util.stream.Collectors;
34 
35 /**
36  * A helper class to get and check hearing aids and its status.
37  */
38 public class HearingAidHelper {
39 
40     private final BluetoothAdapter mBluetoothAdapter;
41     private final LocalBluetoothProfileManager mProfileManager;
42     private final CachedBluetoothDeviceManager mCachedDeviceManager;
43 
HearingAidHelper(Context context)44     public HearingAidHelper(Context context) {
45         final LocalBluetoothManager localBluetoothManager =
46                 com.android.settings.bluetooth.Utils.getLocalBluetoothManager(context);
47         mProfileManager = localBluetoothManager.getProfileManager();
48         mCachedDeviceManager = localBluetoothManager.getCachedDeviceManager();
49         mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
50     }
51 
52     /**
53      * Gets the connected hearing aids device whose profiles are
54      * {@link BluetoothProfile#HEARING_AID} or {@link BluetoothProfile#HAP_CLIENT}.
55      *
56      * @return a list of hearing aids {@link BluetoothDevice} objects
57      */
getConnectedHearingAidDeviceList()58     public List<BluetoothDevice> getConnectedHearingAidDeviceList() {
59         if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()
60                 || !isHearingAidSupported()) {
61             return new ArrayList<>();
62         }
63         final List<BluetoothDevice> deviceList = new ArrayList<>();
64         final HapClientProfile hapClientProfile = mProfileManager.getHapClientProfile();
65         if (hapClientProfile != null) {
66             deviceList.addAll(hapClientProfile.getConnectedDevices());
67         }
68         final HearingAidProfile hearingAidProfile = mProfileManager.getHearingAidProfile();
69         if (hearingAidProfile != null) {
70             deviceList.addAll(hearingAidProfile.getConnectedDevices());
71         }
72         return deviceList.stream()
73                 .distinct()
74                 .filter(d -> !mCachedDeviceManager.isSubDevice(d)).collect(Collectors.toList());
75     }
76 
77     /**
78      * Gets the first connected hearing aids device.
79      *
80      * @return a {@link CachedBluetoothDevice} that is hearing aids device
81      */
getConnectedHearingAidDevice()82     public CachedBluetoothDevice getConnectedHearingAidDevice() {
83         final List<BluetoothDevice> deviceList = getConnectedHearingAidDeviceList();
84         return deviceList.isEmpty() ? null : mCachedDeviceManager.findDevice(deviceList.get(0));
85     }
86 
87     /**
88      * Checks if {@link BluetoothProfile#HEARING_AID} or {@link BluetoothProfile#HAP_CLIENT}
89      * supported.
90      */
isHearingAidSupported()91     public boolean isHearingAidSupported() {
92         final List<Integer> supportedList = mBluetoothAdapter.getSupportedProfiles();
93         return supportedList.contains(BluetoothProfile.HEARING_AID)
94                 || supportedList.contains(BluetoothProfile.HAP_CLIENT);
95     }
96 
97     /**
98      * Checks if {@link BluetoothProfile#HEARING_AID} or {@link BluetoothProfile#HAP_CLIENT}
99      * profiles all ready.
100      */
isAllHearingAidRelatedProfilesReady()101     public boolean isAllHearingAidRelatedProfilesReady() {
102         HearingAidProfile hearingAidProfile = mProfileManager.getHearingAidProfile();
103         if (hearingAidProfile != null && !hearingAidProfile.isProfileReady()) {
104             return false;
105         }
106         HapClientProfile hapClientProfile = mProfileManager.getHapClientProfile();
107         if (hapClientProfile != null && !hapClientProfile.isProfileReady()) {
108             return false;
109         }
110         return true;
111     }
112 }
113