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1 /*
2  * Copyright (C) 2022 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 package com.android.car.oem;
17 
18 import android.annotation.NonNull;
19 import android.car.builtin.util.Slogf;
20 import android.car.oem.IOemCarAudioDuckingService;
21 import android.car.oem.OemCarAudioVolumeRequest;
22 import android.media.AudioAttributes;
23 import android.os.RemoteException;
24 
25 import com.android.car.CarLog;
26 import com.android.internal.util.Preconditions;
27 
28 import java.util.Collections;
29 import java.util.List;
30 
31 /**
32  * Provides functionality of the OEM Audio Ducking Service.
33  */
34 public final class CarOemAudioDuckingProxyService {
35 
36     private static final String TAG = CarLog.tagFor(CarOemAudioDuckingProxyService.class);
37     private static final String CALLER_TAG = CarLog.tagFor(CarOemAudioDuckingProxyService.class);
38 
39     private final CarOemProxyServiceHelper mHelper;
40     private final IOemCarAudioDuckingService mOemCarAudioDuckingService;
41 
CarOemAudioDuckingProxyService(CarOemProxyServiceHelper helper, IOemCarAudioDuckingService oemAudioDuckingService)42     public CarOemAudioDuckingProxyService(CarOemProxyServiceHelper helper,
43             IOemCarAudioDuckingService oemAudioDuckingService) {
44         mHelper = helper;
45         mOemCarAudioDuckingService = oemAudioDuckingService;
46     }
47 
48     /**
49      * Call to evaluate a ducking change.
50      */
51     @NonNull
evaluateAttributesToDuck( @onNull OemCarAudioVolumeRequest requestInfo)52     public List<AudioAttributes> evaluateAttributesToDuck(
53             @NonNull OemCarAudioVolumeRequest requestInfo) {
54         Preconditions.checkArgument(requestInfo != null,
55                 "Audio ducking evaluation request can not be null");
56         return mHelper.doBinderTimedCallWithDefaultValue(CALLER_TAG,
57                 () -> {
58                     try {
59                         return mOemCarAudioDuckingService.evaluateAttributesToDuck(requestInfo);
60                     } catch (RemoteException e) {
61                         Slogf.e(TAG, e, "Ducking evaluation request " + requestInfo);
62                     }
63                     return Collections.EMPTY_LIST;
64                 }, Collections.EMPTY_LIST);
65     }
66 }
67