1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libovr/Src/win32/OVR_Win32_DeviceStatus.h	Sat Sep 14 16:14:59 2013 +0300
     1.3 @@ -0,0 +1,101 @@
     1.4 +/************************************************************************************
     1.5 +
     1.6 +Filename    :   OVR_Win32_DeviceStatus.h
     1.7 +Content     :   Win32-specific DeviceStatus header.
     1.8 +Created     :   January 24, 2013
     1.9 +Authors     :   Lee Cooper
    1.10 +
    1.11 +Copyright   :   Copyright 2013 Oculus VR, Inc. All Rights reserved.
    1.12 +
    1.13 +Use of this software is subject to the terms of the Oculus license
    1.14 +agreement provided at the time of installation or download, or which
    1.15 +otherwise accompanies this software in either electronic or hard copy form.
    1.16 +
    1.17 +*************************************************************************************/
    1.18 +
    1.19 +#ifndef OVR_Win32_DeviceStatus_h
    1.20 +#define OVR_Win32_DeviceStatus_h
    1.21 +
    1.22 +#include <windows.h>
    1.23 +#include "Kernel/OVR_String.h"
    1.24 +#include "Kernel/OVR_RefCount.h"
    1.25 +#include "Kernel/OVR_Array.h"
    1.26 +
    1.27 +namespace OVR { namespace Win32 {
    1.28 +
    1.29 +//-------------------------------------------------------------------------------------
    1.30 +// ***** DeviceStatus
    1.31 +//
    1.32 +// DeviceStatus abstracts the handling of windows messages of interest for
    1.33 +// example the WM_DEVICECHANGED message which occurs when a device is plugged/unplugged.
    1.34 +// The device manager thread creates an instance of this class and passes its pointer
    1.35 +// in the constructor. That thread is also responsible for periodically calling 'ProcessMessages'
    1.36 +// to process queued windows messages. The client is notified via the 'OnMessage' method
    1.37 +// declared in the 'DeviceMessages::Notifier' interface.
    1.38 +class DeviceStatus : public RefCountBase<DeviceStatus>
    1.39 +{
    1.40 +public:
    1.41 +
    1.42 +	// Notifier used for device messages.
    1.43 +	class Notifier  
    1.44 +	{
    1.45 +	public:
    1.46 +		enum MessageType
    1.47 +		{
    1.48 +			DeviceAdded     = 0,
    1.49 +			DeviceRemoved   = 1,
    1.50 +		};
    1.51 +
    1.52 +		virtual bool OnMessage(MessageType type, const String& devicePath) 
    1.53 +        { OVR_UNUSED2(type, devicePath); return true; }
    1.54 +	};
    1.55 +
    1.56 +	DeviceStatus(Notifier* const pClient);
    1.57 +	~DeviceStatus();
    1.58 +
    1.59 +	void operator = (const DeviceStatus&);	// No assignment implementation.
    1.60 +
    1.61 +	bool Initialize();
    1.62 +	void ShutDown();
    1.63 +
    1.64 +	void ProcessMessages();
    1.65 +
    1.66 +private:	
    1.67 +    enum 
    1.68 +    { 
    1.69 +        MaxUSBRecoveryAttempts  = 20,
    1.70 +        USBRecoveryTimeInterval = 500   // ms
    1.71 +    };
    1.72 +    struct RecoveryTimerDesc
    1.73 +    {
    1.74 +        UINT_PTR    TimerId;
    1.75 +        String      DevicePath;
    1.76 +        unsigned    NumAttempts;
    1.77 +    };
    1.78 +
    1.79 +	static LRESULT CALLBACK WindowsMessageCallback( HWND hwnd, 
    1.80 +                                                    UINT message, 
    1.81 +                                                    WPARAM wParam, 
    1.82 +                                                    LPARAM lParam);
    1.83 +
    1.84 +	bool MessageCallback(WORD messageType, const String& devicePath);
    1.85 +
    1.86 +    void CleanupRecoveryTimer(UPInt index);
    1.87 +    RecoveryTimerDesc* FindRecoveryTimer(UINT_PTR timerId, UPInt* pindex);
    1.88 +    void FindAndCleanupRecoveryTimer(const String& devicePath);
    1.89 +
    1.90 +private: // data
    1.91 +    Notifier* const     pNotificationClient;	// Don't reference count a back-pointer.
    1.92 +
    1.93 +    HWND                hMessageWindow;
    1.94 +    HDEVNOTIFY          hDeviceNotify;
    1.95 +
    1.96 +    UINT_PTR            LastTimerId;
    1.97 +    Array<RecoveryTimerDesc> RecoveryTimers;
    1.98 +
    1.99 +    GUID                HidGuid;
   1.100 +};
   1.101 +
   1.102 +}} // namespace OVR::Win32
   1.103 +
   1.104 +#endif // OVR_Win32_DeviceStatus_h