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 #ifndef OHOS_DCAMERA_SOURCE_STATE_MACHINE_H 17 #define OHOS_DCAMERA_SOURCE_STATE_MACHINE_H 18 #include "dcamera_source_event.h" 19 #include "dcamera_source_state.h" 20 21 namespace OHOS { 22 namespace DistributedHardware { 23 class DCameraSourceDev; 24 class DCameraSourceStateMachine : public std::enable_shared_from_this<DCameraSourceStateMachine> { 25 public: 26 explicit DCameraSourceStateMachine(std::shared_ptr<DCameraSourceDev>& camDev); 27 ~DCameraSourceStateMachine(); 28 int32_t Execute(DCAMERA_EVENT eventType, DCameraSourceEvent& event); 29 void UpdateState(DCameraStateType stateType); 30 int32_t GetCameraState(); 31 32 private: 33 std::shared_ptr<DCameraSourceState> currentState_; 34 std::weak_ptr<DCameraSourceDev> camDev_; 35 }; 36 } // namespace DistributedHardware 37 } // namespace OHOS 38 #endif // OHOS_DCAMERA_SOURCE_STATE_MACHINE_H 39