1 /* 2 * Copyright (c) 2021 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 LIBWESTON_SOFT_VSYNC_H 17 #define LIBWESTON_SOFT_VSYNC_H 18 19 #ifdef __cplusplus 20 #include <memory> 21 #include <thread> 22 23 class SoftVsync { 24 public: 25 static SoftVsync &GetInstance(); 26 27 void SoftVsyncStart(); 28 void SoftVsyncStop(); 29 30 private: 31 SoftVsync() = default; 32 ~SoftVsync() = default; 33 34 void SoftVsyncThreadMain(); 35 36 std::unique_ptr<std::thread> softVsyncThread = nullptr; 37 bool vsyncThreadRunning = false; 38 }; 39 #endif 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 void StartSoftVsyncThread(); 46 void StopSoftVsyncThread(); 47 48 #ifdef __cplusplus 49 } 50 #endif 51 52 #endif // LIBWESTON_SOFT_VSYNC_H 53