1 /*
2  * Copyright (C) 2010 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 #ifndef ANDROID_IMEDIADEATHNOTIFIER_H
18 #define ANDROID_IMEDIADEATHNOTIFIER_H
19 
20 #include <utils/threads.h>
21 #include <media/IMediaPlayerService.h>
22 #include <utils/SortedVector.h>
23 
24 namespace android {
25 
26 class IMediaDeathNotifier: virtual public RefBase
27 {
28 public:
IMediaDeathNotifier()29     IMediaDeathNotifier() { addObitRecipient(this); }
~IMediaDeathNotifier()30     virtual ~IMediaDeathNotifier() { removeObitRecipient(this); }
31 
32     virtual void died() = 0;
33     static const sp<IMediaPlayerService>& getMediaPlayerService();
34 
35 private:
36     IMediaDeathNotifier &operator=(const IMediaDeathNotifier &);
37     IMediaDeathNotifier(const IMediaDeathNotifier &);
38 
39     static void addObitRecipient(const wp<IMediaDeathNotifier>& recipient);
40     static void removeObitRecipient(const wp<IMediaDeathNotifier>& recipient);
41 
42     class DeathNotifier: public IBinder::DeathRecipient
43     {
44     public:
DeathNotifier()45                 DeathNotifier() {}
46         virtual ~DeathNotifier();
47 
48         virtual void binderDied(const wp<IBinder>& who);
49     };
50 
51     friend class DeathNotifier;
52 
53     static  Mutex                                   sServiceLock;
54     static  sp<IMediaPlayerService>                 sMediaPlayerService;
55     static  sp<DeathNotifier>                       sDeathNotifier;
56     static  SortedVector< wp<IMediaDeathNotifier> > sObitRecipients;
57 };
58 
59 }; // namespace android
60 
61 #endif // ANDROID_IMEDIADEATHNOTIFIER_H
62