1 /* 2 * Copyright (c) 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 DISTRIBUTED_INPUT_STATE_BASE_H 17 #define DISTRIBUTED_INPUT_STATE_BASE_H 18 19 #include <map> 20 #include <mutex> 21 #include <string> 22 #include <linux/input.h> 23 24 namespace OHOS { 25 namespace DistributedHardware { 26 namespace DistributedInput { 27 /* 28 * This enumeration class represents the two states of the peropheral: 29 * THROUGH_IN : The state indicates the peripheral takes effect on the local device. 30 * THROUGH_OUT : The state indicates that the peripheral takes effect at the remote device. 31 */ 32 enum class DhidState { 33 THROUGH_IN = 0, 34 THROUGH_OUT, 35 }; 36 37 class DInputState { 38 public: GetInstance()39 static DInputState &GetInstance() 40 { 41 static DInputState instance; 42 return instance; 43 }; 44 45 int32_t Init(); 46 int32_t Release(); 47 int32_t RecordDhids(const std::vector<std::string> &dhids, DhidState state, const int32_t &sessionId); 48 int32_t RemoveDhids(const std::vector<std::string> &dhids); 49 DhidState GetStateByDhid(std::string &dhid); 50 51 private: 52 ~DInputState(); 53 54 void CreateSpecialEventInjectThread(const int32_t &sessionId, const std::vector<std::string> &dhids); 55 void CheckKeyboardState(std::string &dhid, std::string &keyboardNodePath, 56 std::vector<uint32_t> &keyboardPressedKeys, int &fd); 57 void SpecEventInject(const int32_t &sessionId, std::vector<std::string> dhids); 58 void RecordEventLog(const input_event &event); 59 void WriteEventToDev(int &fd, const input_event &event); 60 void CheckMouseKeyState(const int32_t &sessionId, const std::string &mouseNodePath, 61 const std::string &mouseNodeDhId); 62 63 private: 64 std::mutex operationMutex_; 65 std::map<std::string, DhidState> dhidStateMap_; 66 }; 67 } // namespace DistributedInput 68 } // namespace DistributedHardware 69 } // namespace OHOS 70 #endif // DISTRIBUTED_INPUT_STATE_BASE_H