mirror of
https://github.com/openharmony/distributedhardware_distributed_input.git
synced 2026-07-18 16:04:40 -04:00
liqiao49
185 lines
7.2 KiB
C++
185 lines
7.2 KiB
C++
/*
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef INPUT_HUB_H
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#define INPUT_HUB_H
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#include <atomic>
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#include <mutex>
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#include <map>
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#include <unordered_map>
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#include <libevdev/libevdev.h>
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#include <linux/input.h>
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#include <sys/epoll.h>
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#include <sys/inotify.h>
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#include "constants_dinput.h"
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namespace OHOS {
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namespace DistributedHardware {
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namespace DistributedInput {
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struct AffectDhIds {
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std::vector<std::string> sharingDhIds;
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std::vector<std::string> noSharingDhIds;
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};
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class InputHub {
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public:
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InputHub();
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~InputHub();
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size_t StartCollectInputEvents(RawEvent* buffer, size_t bufferSize);
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size_t StartCollectInputHandler(InputDeviceEvent* buffer, size_t bufferSize);
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void StopCollectInputEvents();
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void StopCollectInputHandler();
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size_t DeviceIsExists(InputDeviceEvent* buffer, size_t bufferSize);
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std::vector<InputDevice> GetAllInputDevices();
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// return efftive dhids
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AffectDhIds SetSupportInputType(bool enabled, const uint32_t &inputTypes);
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// return efftive dhids
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AffectDhIds SetSharingDevices(bool enabled, std::vector<std::string> dhIds);
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void GetDevicesInfoByType(const uint32_t inputTypes, std::map<int32_t, std::string> &datas);
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void GetDevicesInfoByDhId(std::vector<std::string> dhidsVec, std::map<int32_t, std::string> &datas);
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void GetShareMousePathByDhId(std::vector<std::string> dhIds, std::string &path, std::string &dhId);
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void GetShareKeyboardPathsByDhIds(std::vector<std::string> dhIds, std::vector<std::string> &shareDhidsPaths,
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std::vector<std::string> &shareDhIds);
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bool IsAllDevicesStoped();
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void ScanInputDevices(const std::string& dirName);
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private:
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struct Device {
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Device* next;
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int fd; // may be -1 if device is closed
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const int32_t id;
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const std::string path;
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InputDevice identifier;
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uint32_t classes;
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uint8_t keyBitmask[(KEY_MAX + 1) / 8];
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uint8_t absBitmask[(ABS_MAX + 1) / 8];
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uint8_t relBitmask[(REL_MAX + 1) / 8];
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Device(int fd, int32_t id, const std::string& path, const InputDevice& identifier);
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~Device();
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void Close();
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bool enabled; // initially true
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bool isShare;
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int32_t Enable();
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int32_t Disable();
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bool HasValidFd() const;
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const bool isVirtual; // set if fd < 0 is passed to constructor
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};
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struct AbsInfo {
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uint32_t absX;
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uint32_t absY;
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int32_t absXIndex;
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int32_t absYIndex;
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};
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int32_t Initialize();
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int32_t Release();
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size_t GetEvents(RawEvent* buffer, size_t bufferSize);
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size_t ReadInputEvent(int32_t readSize, Device& device);
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void GetDeviceHandler();
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int32_t RefreshEpollItem(bool isSleep);
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int32_t OpenInputDeviceLocked(const std::string& devicePath);
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int32_t QueryInputDeviceInfo(int fd, InputDevice& identifier);
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void QueryEventInfo(int fd, InputDevice& identifier);
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struct libevdev* GetLibEvDev(int fd);
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void GetEventTypes(struct libevdev* dev, InputDevice& identifier);
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int32_t GetEventKeys(struct libevdev* dev, InputDevice& identifier);
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int32_t GetABSInfo(struct libevdev* dev, InputDevice& identifier);
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int32_t GetRELTypes(struct libevdev* dev, InputDevice& identifier);
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void GetProperties(struct libevdev* dev, InputDevice& identifier);
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int32_t MakeDevice(int fd, std::unique_ptr<Device> device);
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void GenerateDescriptor(InputDevice& identifier) const;
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std::string StringPrintf(const char* format, ...) const;
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int32_t RegisterFdForEpoll(int fd);
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int32_t RegisterDeviceForEpollLocked(const Device& device);
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void AddDeviceLocked(std::unique_ptr<Device> device);
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void CloseDeviceLocked(Device& device);
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void CloseDeviceForAllLocked(Device& device);
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int32_t UnregisterDeviceFromEpollLocked(const Device& device) const;
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int32_t UnregisterFdFromEpoll(int fd) const;
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int32_t ReadNotifyLocked();
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void CloseDeviceByPathLocked(const std::string& devicePath);
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void CloseAllDevicesLocked();
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void JudgeDeviceOpenOrClose(const inotify_event& event);
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Device* GetDeviceByPathLocked(const std::string& devicePath);
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Device* GetDeviceByFdLocked(int fd);
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Device* GetSupportDeviceByFd(int fd);
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bool IsDeviceRegistered(const std::string& devicePath);
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bool ContainsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex);
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int64_t ProcessEventTimestamp(const input_event& event);
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bool IsTouchPad(const InputDevice& inputDevice);
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/*
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* this macro is used to tell if "bit" is set in "array"
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* it selects a byte from the array, and does a boolean AND
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* operation with a byte that only has the relevant bit set.
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* eg. to check for the 12th bit, we do (array[1] & 1<<4)
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*/
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bool TestBit(uint32_t bit, const uint8_t* array);
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/* this macro computes the number of bytes needed to represent a bit array of the specified size */
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uint32_t SizeofBitArray(uint32_t bit);
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void RecordEventLog(const RawEvent* event);
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void RecordDeviceLog(const int32_t deviceId, const std::string& devicePath, const InputDevice& identifier);
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void HandleTouchScreenEvent(struct input_event readBuffer[], const size_t count, std::vector<bool>& needFilted);
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int32_t QueryLocalTouchScreenInfo(int fd);
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bool CheckTouchPointRegion(struct input_event readBuffer[], const AbsInfo& absInfo);
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size_t CollectEvent(RawEvent* buffer, size_t& capacity, Device* device, struct input_event readBuffer[],
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const size_t count);
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/*
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* isEnable: true for sharing dhid, false for no sharing dhid
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*/
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void SaveAffectDhId(bool isEnable, const std::string &dhId, AffectDhIds &affDhIds);
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int epollFd_;
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int iNotifyFd_;
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int inputWd_;
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std::vector<std::unique_ptr<Device>> openingDevices_;
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std::vector<std::unique_ptr<Device>> closingDevices_;
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std::unordered_map<int32_t, std::unique_ptr<Device>> devices_;
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std::mutex devicesMutex_;
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std::atomic<bool> needToScanDevices_;
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std::string deviceId_;
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std::string touchDescriptor;
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std::atomic<int32_t> nextDeviceId_;
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// The array of pending epoll events and the index of the next event to be handled.
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struct epoll_event mPendingEventItems[EPOLL_MAX_EVENTS];
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std::atomic<int32_t> pendingEventCount_;
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std::atomic<int32_t> pendingEventIndex_;
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std::atomic<bool> pendingINotify_;
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std::mutex operationMutex_;
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std::atomic<bool> deviceChanged_;
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std::atomic<uint32_t> inputTypes_;
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std::atomic<bool> isStartCollectEvent_;
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std::atomic<bool> isStartCollectHandler_;
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std::unordered_map<std::string, bool> sharedDHIds_;
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};
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} // namespace DistributedInput
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} // namespace DistributedHardware
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} // namespace OHOS
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#endif // INPUT_HUB_H
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