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 DCAMERA_LOW_LATENCY_H
17 #define DCAMERA_LOW_LATENCY_H
18 
19 #include "distributed_hardware_fwk_kit.h"
20 #include "single_instance.h"
21 
22 namespace OHOS {
23 namespace DistributedHardware {
24 class DCameraLowLatency {
25 DECLARE_SINGLE_INSTANCE_BASE(DCameraLowLatency);
26 public:
27     int32_t EnableLowLatency();
28     int32_t DisableLowLatency();
29 
30 private:
31     DCameraLowLatency() = default;
32     ~DCameraLowLatency() = default;
33     std::shared_ptr<DistributedHardwareFwkKit> GetDHFwkKit();
34 
35 private:
36     constexpr static int32_t REF_INITIAL = 0;
37     constexpr static int32_t REF_NORMAL = 1;
38     std::shared_ptr<DistributedHardwareFwkKit> dHFwkKit_;
39     std::mutex dHFwkKitMutex_;
40     std::atomic<int> refCount_ = 0;
41 };
42 } // namespace DistributedHardware
43 } // namespace OHOS
44 #endif // OHOS_DCAMERA_LOW_LATENCY_H