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.car.audio;
18 
19 import android.media.AudioDeviceCallback;
20 import android.media.AudioDeviceInfo;
21 
22 import java.util.Objects;
23 
24 /**
25  * Class to allow for car audio service to listen to audio device info updates.
26  * This can be used to monitor changes to dynamic devices as seen by the audio service.
27  */
28 final class CarAudioDeviceCallback extends AudioDeviceCallback {
29 
30     private final CarAudioService mCarAudioService;
31 
CarAudioDeviceCallback(CarAudioService carAudioService)32     CarAudioDeviceCallback(CarAudioService carAudioService) {
33         mCarAudioService = Objects.requireNonNull(carAudioService,
34                 "Car audio service can not be null");
35     }
36 
37     /**
38      * see {@link AudioDeviceCallback#onAudioDevicesAdded(AudioDeviceInfo[])}
39      */
40     @Override
onAudioDevicesAdded(AudioDeviceInfo[] addedDevices)41     public void onAudioDevicesAdded(AudioDeviceInfo[] addedDevices) {
42         mCarAudioService.audioDevicesAdded(addedDevices);
43     }
44 
45     /**
46      * see {@link AudioDeviceCallback#onAudioDevicesRemoved(AudioDeviceInfo[])}
47      */
48     @Override
onAudioDevicesRemoved(AudioDeviceInfo[] removedDevices)49     public void onAudioDevicesRemoved(AudioDeviceInfo[] removedDevices) {
50         mCarAudioService.audioDevicesRemoved(removedDevices);
51     }
52 }
53