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 SENSOR_DATA_CHANNEL_H 17 #define SENSOR_DATA_CHANNEL_H 18 19 #include <unordered_set> 20 21 #include "sensor_agent_type.h" 22 #include "sensor_basic_data_channel.h" 23 #include "sensor_event_handler.h" 24 25 namespace OHOS { 26 namespace Sensors { 27 using DataChannelCB = std::function<void(SensorEvent *, int32_t, void *)>; 28 using ReceiveMessageFun = std::function<void(const char *, size_t)>; 29 using DisconnectFun = std::function<void()>; 30 class SensorDataChannel : public SensorBasicDataChannel { 31 public: 32 SensorDataChannel() = default; 33 ~SensorDataChannel(); 34 int32_t CreateSensorDataChannel(DataChannelCB callBack, void *data); 35 int32_t DestroySensorDataChannel(); 36 int32_t RestoreSensorDataChannel(); 37 DataChannelCB dataCB_ = nullptr; 38 void *privateData_ = nullptr; 39 int32_t AddFdListener(int32_t fd, ReceiveMessageFun receiveMessage, DisconnectFun disconnect); 40 int32_t DelFdListener(int32_t fd); 41 ReceiveMessageFun GetReceiveMessageFun() const; 42 DisconnectFun GetDisconnectFun() const; 43 44 private: 45 int32_t InnerSensorDataChannel(); 46 std::mutex eventRunnerMutex_; 47 std::shared_ptr<SensorEventHandler> eventHandler_ = nullptr; 48 std::unordered_set<int32_t> listenedFdSet_; 49 ReceiveMessageFun receiveMessage_; 50 DisconnectFun disconnect_; 51 }; 52 } // namespace Sensors 53 } // namespace OHOS 54 #endif // SENSOR_DATA_CHANNEL_H 55