1 /*
2  * Copyright (C) 2018 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 android.car.media;
18 
19 /**
20  * Binder interface to callback the volume key events.
21  *
22  * @hide
23  */
24 oneway interface ICarVolumeCallback {
25     /**
26      * This is called whenever a group volume is changed.
27      * The changed-to volume index is not included, the caller is encouraged to
28      * get the current group volume index via CarAudioManager.
29      */
onGroupVolumeChanged(int zoneId, int groupId, int flags)30     void onGroupVolumeChanged(int zoneId, int groupId, int flags);
31 
32     /**
33      * This is called whenever the master mute state is changed.
34      * The changed-to master mute state is not included, the caller is encouraged to
35      * get the current master mute state via AudioManager.
36      */
onMasterMuteChanged(int zoneId, int flags)37     void onMasterMuteChanged(int zoneId, int flags);
38 }
39