1 /*
2  * Copyright (c) 2022 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 SORFT_VSYNC_H
17 #define SORFT_VSYNC_H
18 
19 #include <thread>
20 #include <memory>
21 #include <mutex>
22 #include "hdi_display.h"
23 namespace OHOS {
24 namespace HDI {
25 namespace DISPLAY {
26 class SorftVsync {
27 public:
28     SorftVsync();
29     virtual ~SorftVsync();
30     static SorftVsync &GetInstance();
31 
32     int32_t Init();
33     void EnableVsync(bool enable);
34     void WorkThread();
35     void ReqesterVBlankCb(const std::shared_ptr<VsyncCallBack> &cb);
36     bool CheckRuning();
37 
38 private:
39     std::unique_ptr<std::thread> thread_;
40     bool enable_ = false;
41     std::mutex mutext_;
42     std::condition_variable condition_;
43     std::shared_ptr<VsyncCallBack> callback_;
44     bool running_ = false;
45 };
46 } // namespace OHOS
47 } // namespace HDI
48 } // namespace DISPLAY
49 
50 #endif // SORFT_VSYNC_H