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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* 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.platform.internal;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import com.android.server.SystemService;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import cyanogenmod.app.CMContextConstants;
import cyanogenmod.media.AudioSessionInfo;
import cyanogenmod.media.CMAudioManager;
import cyanogenmod.media.ICMAudioService;
import cyanogenmod.platform.Manifest;
public class CMAudioService extends CMSystemService {
private static final String TAG = "CMAudioService";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
private final Context mContext;
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;
public CMAudioService(Context context) {
super(context);
mContext = context;
}
@Override
public String getFeatureDeclaration() {
return CMContextConstants.Features.AUDIO;
}
@Override
public void onStart() {
if (!NativeHelper.isNativeLibraryAvailable()) {
Log.wtf(TAG, "CM Audio service started by system server by native library is" +
"unavailable. Service will be unavailable.");
return;
}
publishBinderService(CMContextConstants.CM_AUDIO_SERVICE, mBinder);
}
@Override
public void onBootPhase(int phase) {
if (phase == PHASE_BOOT_COMPLETED) {
if (NativeHelper.isNativeLibraryAvailable()) {
native_registerAudioSessionCallback(true);
}
}
}
private final IBinder mBinder = new ICMAudioService.Stub() {
@Override
public List<AudioSessionInfo> listAudioSessions(int streamType) throws RemoteException {
final ArrayList<AudioSessionInfo> sessions = new ArrayList<AudioSessionInfo>();
if (!NativeHelper.isNativeLibraryAvailable()) {
// no sessions for u
return sessions;
}
int status = native_listAudioSessions(streamType, sessions);
if (status != AUDIO_STATUS_OK) {
Log.e(TAG, "Error retrieving audio sessions! status=" + status);
}
return sessions;
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
mContext.enforceCallingOrSelfPermission(android.Manifest.permission.DUMP, TAG);
pw.println();
pw.println("CMAudio Service State:");
try {
List<AudioSessionInfo> sessions = listAudioSessions(-1);
if (sessions.size() > 0) {
pw.println(" Audio sessions:");
for (AudioSessionInfo info : sessions) {
pw.println(" " + info.toString());
}
} else {
pw.println(" No active audio sessions");
}
} catch (RemoteException e) {
// nothing
}
}
};
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);
final long ident = Binder.clearCallingIdentity();
try {
if (DEBUG) Log.d(TAG, "Sending broadcast: " + intent.toString());
mContext.sendBroadcastAsUser(intent, UserHandle.ALL, receiverPermission);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
/*
* Handles events from JNI
*/
private synchronized void audioSessionCallbackFromNative(int event,
AudioSessionInfo sessionInfo, boolean added) {
switch (event) {
case AUDIO_OUTPUT_SESSION_EFFECTS_UPDATE:
broadcastSessionChanged(added, sessionInfo);
break;
default:
Log.e(TAG, "Unknown event " + event);
}
}
private native final void native_registerAudioSessionCallback(boolean enabled);
private native final int native_listAudioSessions(
int stream, ArrayList<AudioSessionInfo> sessions);
}
|
