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
|
/*
* Copyright 2018 The Android Open Source 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 com.android.server.media;
import android.content.Context;
import android.content.Intent;
import android.media.IMediaResourceMonitor;
import android.os.Binder;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Log;
import android.util.Slog;
import com.android.server.SystemService;
import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.IBinder;
import android.os.PatternMatcher;
import android.os.ServiceManager;
import android.media.IMediaExtractorUpdateService;
import java.lang.Exception;
/** This class provides a system service that manages media framework updates. */
public class MediaUpdateService extends SystemService {
private static final String TAG = "MediaUpdateService";
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
private static final String MEDIA_UPDATE_PACKAGE_NAME = "com.android.media.update";
private static final String EXTRACTOR_UPDATE_SERVICE_NAME = "media.extractor.update";
private IMediaExtractorUpdateService mMediaExtractorUpdateService;
public MediaUpdateService(Context context) {
super(context);
}
@Override
public void onStart() {
if ("userdebug".equals(android.os.Build.TYPE) || "eng".equals(android.os.Build.TYPE)) {
connect();
registerBroadcastReceiver();
}
}
private void connect() {
IBinder binder = ServiceManager.getService(EXTRACTOR_UPDATE_SERVICE_NAME);
if (binder != null) {
try {
binder.linkToDeath(new IBinder.DeathRecipient() {
@Override
public void binderDied() {
Slog.w(TAG, "mediaextractor died; reconnecting");
mMediaExtractorUpdateService = null;
connect();
}
}, 0);
} catch (Exception e) {
binder = null;
}
}
if (binder != null) {
mMediaExtractorUpdateService = IMediaExtractorUpdateService.Stub.asInterface(binder);
packageStateChanged();
} else {
Slog.w(TAG, EXTRACTOR_UPDATE_SERVICE_NAME + " not found.");
}
}
private void registerBroadcastReceiver() {
BroadcastReceiver updateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_SYSTEM)
!= UserHandle.USER_SYSTEM) {
// Ignore broadcast for non system users. We don't want to update system
// service multiple times.
return;
}
switch (intent.getAction()) {
case Intent.ACTION_PACKAGE_REMOVED:
if (intent.getExtras().getBoolean(Intent.EXTRA_REPLACING)) {
// The existing package is updated. Will be handled with the
// following ACTION_PACKAGE_ADDED case.
return;
}
packageStateChanged();
break;
case Intent.ACTION_PACKAGE_CHANGED:
packageStateChanged();
break;
case Intent.ACTION_PACKAGE_ADDED:
packageStateChanged();
break;
}
}
};
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addDataScheme("package");
filter.addDataSchemeSpecificPart(MEDIA_UPDATE_PACKAGE_NAME, PatternMatcher.PATTERN_LITERAL);
getContext().registerReceiverAsUser(updateReceiver, UserHandle.ALL, filter,
null /* broadcast permission */, null /* handler */);
}
private void packageStateChanged() {
ApplicationInfo packageInfo = null;
boolean pluginsAvailable = false;
try {
packageInfo = getContext().getPackageManager().getApplicationInfo(
MEDIA_UPDATE_PACKAGE_NAME, PackageManager.MATCH_SYSTEM_ONLY);
pluginsAvailable = packageInfo.enabled;
} catch (Exception e) {
Slog.v(TAG, "package '" + MEDIA_UPDATE_PACKAGE_NAME + "' not installed");
}
loadExtractorPlugins(
(packageInfo != null && pluginsAvailable) ? packageInfo.sourceDir : "");
}
private void loadExtractorPlugins(String apkPath) {
try {
if (mMediaExtractorUpdateService != null) {
mMediaExtractorUpdateService.loadPlugins(apkPath);
}
} catch (Exception e) {
Slog.w(TAG, "Error in loadPlugins", e);
}
}
}
|
