1 /*
2  * Copyright (C) 2016 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 
18 package android.brillo.brilloaudioservice;
19 
20 /*
21  * Interface for the callback object registered with IBrilloAudioService. Used
22  * to notify clients about changes to the audio system.
23  */
24 interface IAudioServiceCallback {
25   // Oneway call triggered when audio devices are connected to the system.
OnAudioDevicesConnected(in int[] added_devices)26   oneway void OnAudioDevicesConnected(in int[] added_devices);
27 
28   // Oneway call triggered when audio devices are disconnected from the system.
OnAudioDevicesDisconnected(in int[] removed_devices)29   oneway void OnAudioDevicesDisconnected(in int[] removed_devices);
30 
31   // Oneway call triggered when the volume is changed. If there are
32   // multiple active streams, this call will be called multiple times.
OnVolumeChanged( int stream_type, int old_volume_index, int new_volume_index)33   oneway void OnVolumeChanged(
34       int stream_type, int old_volume_index, int new_volume_index);
35 }
36