1 /* Copyright (C) 2014 The Android Open Source Project
2  *
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 package android.media.audiopolicy;
17 
18 import android.media.AudioFocusInfo;
19 
20 /**
21  * @hide
22  */
23 oneway interface IAudioPolicyCallback {
24 
25     // callbacks for audio focus listening
notifyAudioFocusGrant(in AudioFocusInfo afi, int requestResult)26     void notifyAudioFocusGrant(in AudioFocusInfo afi, int requestResult);
notifyAudioFocusLoss(in AudioFocusInfo afi, boolean wasNotified)27     void notifyAudioFocusLoss(in AudioFocusInfo afi, boolean wasNotified);
28     // callback for audio focus policy
notifyAudioFocusRequest(in AudioFocusInfo afi, int requestResult)29     void notifyAudioFocusRequest(in AudioFocusInfo afi, int requestResult);
notifyAudioFocusAbandon(in AudioFocusInfo afi)30     void notifyAudioFocusAbandon(in AudioFocusInfo afi);
31 
32     // callback for mix activity status update
notifyMixStateUpdate(in String regId, int state)33     void notifyMixStateUpdate(in String regId, int state);
34 
35     // callback for volume events
notifyVolumeAdjust(int adjustment)36     void notifyVolumeAdjust(int adjustment);
37 
38     // callback for unregistration (e.g. if policy couldn't automatically be re-registered after
39     // an audioserver crash)
notifyUnregistration()40     void notifyUnregistration();
41 }
42