1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef ST_AUDIO_SESSION_TIMER_H
17 #define ST_AUDIO_SESSION_TIMER_H
18 
19 #include <chrono>
20 #include <memory>
21 #include <mutex>
22 #include <thread>
23 
24 #include "audio_session_info.h"
25 
26 namespace OHOS {
27 namespace AudioStandard {
28 class AudioSessionTimerCallback {
29 public:
30     virtual ~AudioSessionTimerCallback() = default;
31 
32     virtual void OnAudioSessionTimeOut(const int32_t callerPid) = 0;
33 };
34 
35 enum class TimerState {
36     TIMER_INVALID = -1,
37     TIMER_NEW = 0,
38     TIMER_RUNNING = 1,
39     TIMER_STOPPED = 2,
40 };
41 
42 class AudioSessionTimer {
43 public:
44     AudioSessionTimer();
45     virtual ~AudioSessionTimer();
46 
47     void StartTimer(const int32_t callerPid);
48     void StopTimer(const int32_t callerPid);
49     bool IsSessionTimerRunning(const int32_t callerPid);
50     int32_t SetAudioSessionTimerCallback(const std::shared_ptr<AudioSessionTimerCallback> sessionTimerCallback);
51 
52 private:
53     void SendSessionTimeOutCallback(const int32_t callerPid);
54     void TimerLoopFunc();
55 
56     std::mutex sessionTimerMutex_;
57 
58     TimerState state_ = TimerState::TIMER_INVALID;
59     std::unordered_map<int32_t, std::time_t> timerMap_;
60     std::shared_ptr<std::thread> timerThread_;
61     std::atomic<bool> isThreadRunning_ = false;
62     std::condition_variable timerCond_;
63     std::mutex timerLoopMutex_;
64     std::weak_ptr<AudioSessionTimerCallback> timerCallback_;
65 };
66 } // namespace AudioStandard
67 } // namespace OHOS
68 
69 #endif // ST_AUDIO_SESSION_SERVICE_H