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.AudioFocusInfo;
20 
21 import java.util.List;
22 import java.util.Objects;
23 
24 /**
25  * Class used to store information about the currently active and inactive foci
26  */
27 final class AudioFocusStack {
28 
29     private final List<AudioFocusInfo> mActiveFocusList;
30     private final List<AudioFocusInfo> mInactiveFocusList;
31 
AudioFocusStack(List<AudioFocusInfo> activeFocusList, List<AudioFocusInfo> inactiveFocusList)32     AudioFocusStack(List<AudioFocusInfo> activeFocusList, List<AudioFocusInfo> inactiveFocusList) {
33         Objects.requireNonNull(activeFocusList, "Active foci info must not be null");
34         Objects.requireNonNull(inactiveFocusList, "Inactive foci info must not be null");
35         mActiveFocusList = List.copyOf(activeFocusList);
36         mInactiveFocusList = List.copyOf(inactiveFocusList);
37     }
38 
getActiveFocusList()39     List<AudioFocusInfo> getActiveFocusList() {
40         return mActiveFocusList;
41     }
42 
getInactiveFocusList()43     List<AudioFocusInfo> getInactiveFocusList() {
44         return mInactiveFocusList;
45     }
46 }
47