1 /*
2  * Copyright (C) 2017 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.server.audio;
18 
19 public interface PlayerFocusEnforcer {
20 
21     /**
22      * Ducks the players associated with the "loser" focus owner (i.e. same UID). Returns true if
23      * at least one active player was found and ducked, false otherwise.
24      * @param winner
25      * @param loser
26      * @return
27      */
duckPlayers(FocusRequester winner, FocusRequester loser, boolean forceDuck)28     public boolean duckPlayers(FocusRequester winner, FocusRequester loser, boolean forceDuck);
29 
unduckPlayers(FocusRequester winner)30     public void unduckPlayers(FocusRequester winner);
31 
mutePlayersForCall(int[] usagesToMute)32     public void mutePlayersForCall(int[] usagesToMute);
33 
unmutePlayersForCall()34     public void unmutePlayersForCall();
35 }