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 #include "native_vsync.h"
17
18 #include <iostream>
19 #include <thread>
20 #include <unistd.h>
21
22 static bool flag = false;
OnVSync(long long timestamp,void * data)23 static void OnVSync(long long timestamp, void* data)
24 {
25 flag = true;
26 std::cout << "OnVSync: " << timestamp << std::endl;
27 }
28
ThreadMain(OH_NativeVSync * nativeVSync)29 static void ThreadMain(OH_NativeVSync* nativeVSync)
30 {
31 OH_NativeVSync_FrameCallback callback = OnVSync;
32 OH_NativeVSync_RequestFrame(nativeVSync, callback, nullptr);
33 while (!flag) {
34 std::cout << "wait for vsync!\n";
35 sleep(1);
36 }
37 std::cout << "vsync come, end this thread\n";
38 }
main(int32_t argc,const char * argv[])39 int32_t main(int32_t argc, const char *argv[])
40 {
41 char name[] = "hello_vsync";
42 OH_NativeVSync* nativeVSync = OH_NativeVSync_Create(name, strlen(name));
43 std::thread th(ThreadMain, nativeVSync);
44 th.join();
45 OH_NativeVSync_Destroy(nativeVSync);
46 return 0;
47 }