1 /* 2 * Copyright (c) 2025-2025 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 OHOS_CAMERA_SIMPLE_TIMER_H 17 #define OHOS_CAMERA_SIMPLE_TIMER_H 18 19 #include <condition_variable> 20 #include <functional> 21 #include <mutex> 22 23 namespace OHOS { 24 namespace CameraStandard { 25 26 class SimpleTimer { 27 public: 28 enum TimerStatus { IDLE, RUNNING, CANCEL, DONE }; 29 30 public: 31 explicit SimpleTimer(std::function<void()> fun); 32 ~SimpleTimer(); 33 bool StartTask(uint64_t timeoutMs); 34 bool CancelTask(); 35 36 private: 37 void InterruptableSleep(uint64_t timeoutMs); 38 std::mutex timerMtx_; 39 std::condition_variable timerCv_; 40 TimerStatus timerStatus_ = IDLE; 41 42 std::function<void()> innerFun_; 43 }; 44 } // namespace CameraStandard 45 } // namespace OHOS 46 #endif