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 OHOS_DISTRIBUTED_HARDWARE_LOW_LATENCY_H
17 #define OHOS_DISTRIBUTED_HARDWARE_LOW_LATENCY_H
18 
19 #include <mutex>
20 #include <unordered_set>
21 
22 #include "device_type.h"
23 #include "dh_timer.h"
24 #include "single_instance.h"
25 
26 namespace OHOS {
27 namespace DistributedHardware {
28 class LowLatency {
29 DECLARE_SINGLE_INSTANCE_BASE(LowLatency);
30 public:
31     void EnableLowLatency(DHType dhType);
32     void DisableLowLatency(DHType dhType);
33     void CloseLowLatency();
34 
35 private:
36     LowLatency();
37     ~LowLatency();
38 
39 private:
40     std::unordered_set<DHType> lowLatencySwitchSet_;
41     std::mutex lowLatencyMutex_;
42     std::shared_ptr<DHTimer> lowLatencyTimer_ = nullptr;
43 };
44 } // namespace DistributedHardware
45 } // namespace OHOS
46 #endif
47