1 /**
2  * Copyright (C) 2022 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 IMS_MEDIA_CONDITION_H
18 #define IMS_MEDIA_CONDITION_H
19 
20 #include <stdint.h>
21 #include <pthread.h>
22 
23 class ImsMediaCondition
24 {
25 public:
26     ImsMediaCondition();
27     ~ImsMediaCondition();
28 
29     /**
30      * @brief Wait the current thread
31      *
32      */
33     void wait();
34 
35     /**
36      * @brief Wait the current thread until the timer expired
37      *
38      * @param time The relative time in milliseconds unit
39      * @return true Returned when the timer expires
40      * @return false Returned when the thread is stopped by signal
41      */
42     bool wait_timeout(int64_t time);
43     void signal();
44     void reset();
45 
46 private:
47     void IncCount(uint32_t* pnCount);
48 
49     pthread_mutex_t* mMutex;
50     pthread_cond_t* mCondition;
51     uint32_t mWaitFlag;
52     uint32_t mSignalFlag;
53     uint32_t mWaitCount;
54     uint32_t mSignalCount;
55 };
56 
57 #endif  // IMS_MEDIA_CONDITION_H
58