1 /*
2  * Copyright (c) 2021-2023 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_DCAMERA_SINK_HANDLER_H
17 #define OHOS_DCAMERA_SINK_HANDLER_H
18 
19 #include <cstdint>
20 #include <mutex>
21 #include <condition_variable>
22 
23 #include "idistributed_hardware_sink.h"
24 #include "dcamera_sink_callback.h"
25 #include "single_instance.h"
26 
27 namespace OHOS {
28 namespace DistributedHardware {
29 class DCameraSinkHandler : public IDistributedHardwareSink {
30 DECLARE_SINGLE_INSTANCE_BASE(DCameraSinkHandler);
31 public:
32     int32_t InitSink(const std::string& params) override;
33     int32_t ReleaseSink() override;
34     int32_t SubscribeLocalHardware(const std::string& dhId, const std::string& parameters) override;
35     int32_t UnsubscribeLocalHardware(const std::string& dhId) override;
36     int32_t RegisterPrivacyResources(std::shared_ptr<PrivacyResourcesListener> listener) override;
37     int32_t PauseDistributedHardware(const std::string &networkId) override;
38     int32_t ResumeDistributedHardware(const std::string &networkId) override;
39     int32_t StopDistributedHardware(const std::string &networkId) override;
40     void SetSAState();
41 private:
42     typedef enum {
43         DCAMERA_SA_STATE_STOP = 0,
44         DCAMERA_SA_STATE_START = 1,
45     } DCameraSAState;
46     DCameraSinkHandler();
47     ~DCameraSinkHandler();
48     void FinishStartSA(const std::string &params);
49     void FinishStartSAFailed(const int32_t systemAbilityId);
50 private:
51     std::condition_variable producerCon_;
52     std::mutex producerMutex_;
53     DCameraSAState state_ = DCAMERA_SA_STATE_STOP;
54     friend class DCameraSinkLoadCallback;
55     sptr<DCameraSinkCallback> dCameraSinkCallback_ = nullptr;
56 };
57 
58 #ifdef __cplusplus
59 extern "C" {
60 #endif
61 __attribute__((visibility("default"))) IDistributedHardwareSink *GetSinkHardwareHandler();
62 #ifdef __cplusplus
63 }
64 #endif
65 } // namespace DistributedHardware
66 } // namespace OHOS
67 #endif // OHOS_DCAMERA_SINK_HANDLER_H