1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
* Copyright (C) 2016 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.cyanogenmod.cmaudio.service;
import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
import cyanogenmod.media.AudioSessionInfo;
import cyanogenmod.media.CMAudioManager;
import cyanogenmod.media.ICMAudioService;
import cyanogenmod.platform.Manifest;
public class CMAudioService extends Service {
private static final String TAG = "CMAudioService";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
static {
System.loadLibrary("cmaudio_jni");
if (DEBUG) Log.d(TAG, "loaded jni lib");
}
public static final int MSG_BROADCAST_SESSION = 1;
private static final int AUDIO_STATUS_OK = 0;
//keep in sync with include/media/AudioPolicy.h
private final static int AUDIO_OUTPUT_SESSION_EFFECTS_UPDATE = 10;
private final Handler mHandler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
if (DEBUG) Log.d(TAG, "handleMessage() called with: " + "msg = [" + msg + "]");
switch (msg.what) {
case MSG_BROADCAST_SESSION:
broadcastSessionChanged(msg.arg1 == 1, (AudioSessionInfo) msg.obj);
break;
}
return true;
}
});
@Override
public void onCreate() {
super.onCreate();
native_registerAudioSessionCallback(true);
}
@Override
public void onDestroy() {
native_registerAudioSessionCallback(false);
super.onDestroy();
}
private final IBinder mBinder = new ICMAudioService.Stub() {
@Override
public List<AudioSessionInfo> listAudioSessions(int streamType) throws RemoteException {
final ArrayList<AudioSessionInfo> sessions = new ArrayList<AudioSessionInfo>();
int status = native_listAudioSessions(streamType, sessions);
if (status != AUDIO_STATUS_OK) {
Log.e(TAG, "Error retrieving audio sessions! status=" + status);
}
return sessions;
}
};
private void broadcastSessionChanged(boolean added, AudioSessionInfo sessionInfo) {
Intent i = new Intent(CMAudioManager.ACTION_AUDIO_SESSIONS_CHANGED);
i.putExtra(CMAudioManager.EXTRA_SESSION_INFO, sessionInfo);
i.putExtra(CMAudioManager.EXTRA_SESSION_ADDED, added);
sendBroadcastToAll(i, Manifest.permission.OBSERVE_AUDIO_SESSIONS);
}
private void sendBroadcastToAll(Intent intent, String receiverPermission) {
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
if (DEBUG) Log.d(TAG, "Sending broadcast: " + intent);
sendBroadcastAsUser(intent, UserHandle.ALL, receiverPermission);
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
/*
* Handles events from JNI
*/
private void audioSessionCallbackFromNative(int event, AudioSessionInfo sessionInfo,
boolean added) {
switch (event) {
case AUDIO_OUTPUT_SESSION_EFFECTS_UPDATE:
mHandler.obtainMessage(MSG_BROADCAST_SESSION, added ? 1 : 0, 0, sessionInfo)
.sendToTarget();
break;
default:
Log.e(TAG, "Unknown event " + event);
}
}
private native void native_registerAudioSessionCallback(boolean enabled);
private native int native_listAudioSessions(int stream, ArrayList<AudioSessionInfo> sessions);
}
|
