AudioModeProvider.java revision 6cddf46812634fadc194830774110780f14e9462 
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
17package com.android.incallui;
18
19import com.google.common.collect.Lists;
20
21import android.telecom.AudioState;
22import android.telecom.Phone;
23
24import java.util.List;
25
26/**
27 * Proxy class for getting and setting the audio mode.
28 */
29/* package */ class AudioModeProvider implements InCallPhoneListener {
30
31    static final int AUDIO_MODE_INVALID = 0;
32
33    private static AudioModeProvider sAudioModeProvider = new AudioModeProvider();
34    private int mAudioMode = AudioState.ROUTE_EARPIECE;
35    private boolean mMuted = false;
36    private int mSupportedModes = AudioState.ROUTE_ALL;
37    private final List<AudioModeListener> mListeners = Lists.newArrayList();
38    private Phone mPhone;
39
40    private Phone.Listener mPhoneListener = new Phone.Listener() {
41        @Override
42        public void onAudioStateChanged(Phone phone, AudioState audioState) {
43            onAudioModeChange(audioState.route, audioState.isMuted);
44            onSupportedAudioModeChange(audioState.supportedRouteMask);
45        }
46    };
47
48    public static AudioModeProvider getInstance() {
49        return sAudioModeProvider;
50    }
51
52    @Override
53    public void setPhone(Phone phone) {
54        mPhone = phone;
55        mPhone.addListener(mPhoneListener);
56    }
57
58    @Override
59    public void clearPhone() {
60        mPhone.removeListener(mPhoneListener);
61        mPhone = null;
62    }
63
64    public void onAudioModeChange(int newMode, boolean muted) {
65        if (mAudioMode != newMode) {
66            mAudioMode = newMode;
67            for (AudioModeListener l : mListeners) {
68                l.onAudioMode(mAudioMode);
69            }
70        }
71
72        if (mMuted != muted) {
73            mMuted = muted;
74            for (AudioModeListener l : mListeners) {
75                l.onMute(mMuted);
76            }
77        }
78    }
79
80    public void onSupportedAudioModeChange(int newModeMask) {
81        mSupportedModes = newModeMask;
82
83        for (AudioModeListener l : mListeners) {
84            l.onSupportedAudioMode(mSupportedModes);
85        }
86    }
87
88    public void addListener(AudioModeListener listener) {
89        if (!mListeners.contains(listener)) {
90            mListeners.add(listener);
91            listener.onSupportedAudioMode(mSupportedModes);
92            listener.onAudioMode(mAudioMode);
93            listener.onMute(mMuted);
94        }
95    }
96
97    public void removeListener(AudioModeListener listener) {
98        if (mListeners.contains(listener)) {
99            mListeners.remove(listener);
100        }
101    }
102
103    public int getSupportedModes() {
104        return mSupportedModes;
105    }
106
107    public int getAudioMode() {
108        return mAudioMode;
109    }
110
111    public boolean getMute() {
112        return mMuted;
113    }
114
115    /* package */ interface AudioModeListener {
116        void onAudioMode(int newMode);
117        void onMute(boolean muted);
118        void onSupportedAudioMode(int modeMask);
119    }
120}
121