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-/************************************************************************************
-Filename : OVR_Linux_HIDDevice.h
-Content : Linux HID device implementation.
-Created : June 13, 2013
-Authors : Brant Lewis
-
-Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved.
-
-Licensed under the Oculus VR SDK License Version 2.0 (the "License");
-you may not use the Oculus VR SDK except in compliance with the License,
-which is provided at the time of installation or download, or which
-otherwise accompanies this software in either electronic or hard copy form.
-
-You may obtain a copy of the License at
-
-http://www.oculusvr.com/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, the Oculus VR SDK
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-*************************************************************************************/
-
-#ifndef OVR_LINUX_HIDDevice_h
-#define OVR_LINUX_HIDDevice_h
-
-#include "OVR_HIDDevice.h"
-#include "OVR_Linux_DeviceManager.h"
-#include <libudev.h>
-
-namespace OVR { namespace Linux {
-
-class HIDDeviceManager;
-
-//-------------------------------------------------------------------------------------
-// ***** Linux HIDDevice
-
-class HIDDevice : public OVR::HIDDevice, public DeviceManagerThread::Notifier
-{
-private:
- friend class HIDDeviceManager;
-
-public:
- HIDDevice(HIDDeviceManager* manager);
-
- // This is a minimal constructor used during enumeration for us to pass
- // a HIDDevice to the visit function (so that it can query feature reports).
- HIDDevice(HIDDeviceManager* manager, int device_handle);
-
- virtual ~HIDDevice();
-
- bool HIDInitialize(const String& path);
- void HIDShutdown();
-
- virtual bool SetFeatureReport(UByte* data, UInt32 length);
- virtual bool GetFeatureReport(UByte* data, UInt32 length);
-
- // DeviceManagerThread::Notifier
- void OnEvent(int i, int fd);
- UInt64 OnTicks(UInt64 ticksMks);
-
- bool OnDeviceNotification(MessageType messageType,
- HIDDeviceDesc* device_info,
- bool* error);
-
-private:
- bool initInfo();
- bool openDevice(const char* dev_path);
- void closeDevice(bool wasUnplugged);
- void closeDeviceOnIOError();
- bool setupDevicePluggedInNotification();
-
- bool InMinimalMode;
- HIDDeviceManager* HIDManager;
- int DeviceHandle; // file handle to the device
- HIDDeviceDesc DevDesc;
-
- enum { ReadBufferSize = 96 };
- UByte ReadBuffer[ReadBufferSize];
-
- UInt16 InputReportBufferLength;
- UInt16 OutputReportBufferLength;
- UInt16 FeatureReportBufferLength;
-};
-
-
-//-------------------------------------------------------------------------------------
-// ***** Linux HIDDeviceManager
-
-class HIDDeviceManager : public OVR::HIDDeviceManager, public DeviceManagerThread::Notifier
-{
- friend class HIDDevice;
-
-public:
- HIDDeviceManager(Linux::DeviceManager* Manager);
- virtual ~HIDDeviceManager();
-
- virtual bool Initialize();
- virtual void Shutdown();
-
- virtual bool Enumerate(HIDEnumerateVisitor* enumVisitor);
- virtual OVR::HIDDevice* Open(const String& path);
-
- static HIDDeviceManager* CreateInternal(DeviceManager* manager);
-
- void OnEvent(int i, int fd);
-
-private:
- bool initializeManager();
- bool initVendorProductVersion(udev_device* device, HIDDeviceDesc* pDevDesc);
- bool getPath(udev_device* device, String* pPath);
- bool getIntProperty(udev_device* device, const char* key, int32_t* pResult);
- bool getStringProperty(udev_device* device,
- const char* propertyName,
- OVR::String* pResult);
- bool getFullDesc(udev_device* device, HIDDeviceDesc* desc);
- bool GetDescriptorFromPath(const char* dev_path, HIDDeviceDesc* desc);
-
- bool AddNotificationDevice(HIDDevice* device);
- bool RemoveNotificationDevice(HIDDevice* device);
-
- DeviceManager* DevManager;
-
- udev* UdevInstance; // a handle to the udev library instance
- udev_monitor* HIDMonitor;
- int HIDMonHandle; // the udev_monitor file handle
-
- Array<HIDDevice*> NotificationDevices;
-};
-
-}} // namespace OVR::Linux
-
-#endif // OVR_Linux_HIDDevice_h