1 /* 2 * Copyright (C) 2013 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.incallui.audiomode; 18 19 import android.telecom.CallAudioState; 20 import java.util.ArrayList; 21 import java.util.List; 22 23 /** Proxy class for getting and setting the audio mode. */ 24 public class AudioModeProvider { 25 private static final int SUPPORTED_AUDIO_ROUTE_ALL = 26 CallAudioState.ROUTE_EARPIECE 27 | CallAudioState.ROUTE_BLUETOOTH 28 | CallAudioState.ROUTE_WIRED_HEADSET 29 | CallAudioState.ROUTE_SPEAKER; 30 31 private static final AudioModeProvider instance = new AudioModeProvider(); 32 private final List<AudioModeListener> listeners = new ArrayList<>(); 33 private CallAudioState audioState = 34 new CallAudioState(false, CallAudioState.ROUTE_EARPIECE, SUPPORTED_AUDIO_ROUTE_ALL); 35 36 public static AudioModeProvider getInstance() { 37 return instance; 38 } 39 40 public void onAudioStateChanged(CallAudioState audioState) { 41 if (!this.audioState.equals(audioState)) { 42 this.audioState = audioState; 43 for (AudioModeListener listener : listeners) { 44 listener.onAudioStateChanged(audioState); 45 } 46 } 47 } 48 49 public void addListener(AudioModeListener listener) { 50 if (!listeners.contains(listener)) { 51 listeners.add(listener); 52 listener.onAudioStateChanged(audioState); 53 } 54 } 55 56 public void removeListener(AudioModeListener listener) { 57 listeners.remove(listener); 58 } 59 60 public CallAudioState getAudioState() { 61 return audioState; 62 } 63 64 /** Notified on changes to audio mode. */ 65 public interface AudioModeListener { 66 67 void onAudioStateChanged(CallAudioState audioState); 68 } 69 } 70
