1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libovr/Src/linux/OVR_Linux_DeviceManager.h	Sat Sep 14 16:14:59 2013 +0300
     1.3 @@ -0,0 +1,111 @@
     1.4 +/************************************************************************************
     1.5 +
     1.6 +Filename    :   OVR_Linux_DeviceManager.h
     1.7 +Content     :   Linux-specific DeviceManager header.
     1.8 +Created     :   
     1.9 +Authors     :   
    1.10 +
    1.11 +Copyright   :   Copyright 2012 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_Linux_DeviceManager_h
    1.20 +#define OVR_Linux_DeviceManager_h
    1.21 +
    1.22 +#include "OVR_DeviceImpl.h"
    1.23 +
    1.24 +#include <unistd.h>
    1.25 +#include <sys/poll.h>
    1.26 +
    1.27 +
    1.28 +namespace OVR { namespace Linux {
    1.29 +
    1.30 +class DeviceManagerThread;
    1.31 +
    1.32 +//-------------------------------------------------------------------------------------
    1.33 +// ***** Linux DeviceManager
    1.34 +
    1.35 +class DeviceManager : public DeviceManagerImpl
    1.36 +{
    1.37 +public:
    1.38 +    DeviceManager();
    1.39 +    ~DeviceManager();
    1.40 +
    1.41 +    // Initialize/Shutdowncreate and shutdown manger thread.
    1.42 +    virtual bool Initialize(DeviceBase* parent);
    1.43 +    virtual void Shutdown();
    1.44 +
    1.45 +    virtual ThreadCommandQueue* GetThreadQueue();
    1.46 +    virtual ThreadId GetThreadId() const;
    1.47 +
    1.48 +    virtual DeviceEnumerator<> EnumerateDevicesEx(const DeviceEnumerationArgs& args);    
    1.49 +
    1.50 +    virtual bool  GetDeviceInfo(DeviceInfo* info) const;
    1.51 +
    1.52 +    Ptr<DeviceManagerThread> pThread;
    1.53 +};
    1.54 +
    1.55 +//-------------------------------------------------------------------------------------
    1.56 +// ***** Device Manager Background Thread
    1.57 +
    1.58 +class DeviceManagerThread : public Thread, public ThreadCommandQueue
    1.59 +{
    1.60 +    friend class DeviceManager;
    1.61 +    enum { ThreadStackSize = 64 * 1024 };
    1.62 +public:
    1.63 +    DeviceManagerThread();
    1.64 +    ~DeviceManagerThread();
    1.65 +
    1.66 +    virtual int Run();
    1.67 +
    1.68 +    // ThreadCommandQueue notifications for CommandEvent handling.
    1.69 +    virtual void OnPushNonEmpty_Locked() { write(CommandFd[1], this, 1); }
    1.70 +    virtual void OnPopEmpty_Locked()     { }
    1.71 +
    1.72 +    class Notifier
    1.73 +    {
    1.74 +    public:
    1.75 +        // Called when I/O is received
    1.76 +        virtual void OnEvent(int i, int fd) = 0;
    1.77 +
    1.78 +        // Called when timing ticks are updated.
    1.79 +        // Returns the largest number of microseconds this function can
    1.80 +        // wait till next call.
    1.81 +        virtual UInt64  OnTicks(UInt64 ticksMks)
    1.82 +        {
    1.83 +            OVR_UNUSED1(ticksMks);
    1.84 +            return Timer::MksPerSecond * 1000;
    1.85 +        }
    1.86 +    };
    1.87 +
    1.88 +    // Add I/O notifier
    1.89 +    bool AddSelectFd(Notifier* notify, int fd);
    1.90 +    bool RemoveSelectFd(Notifier* notify, int fd);
    1.91 +
    1.92 +    // Add notifier that will be called at regular intervals.
    1.93 +    bool AddTicksNotifier(Notifier* notify);
    1.94 +    bool RemoveTicksNotifier(Notifier* notify);
    1.95 +
    1.96 +private:
    1.97 +    
    1.98 +    bool threadInitialized() { return CommandFd[0] != 0; }
    1.99 +
   1.100 +    // pipe used to signal commands
   1.101 +    int CommandFd[2];
   1.102 +
   1.103 +    Array<struct pollfd>    PollFds;
   1.104 +    Array<Notifier*>        FdNotifiers;
   1.105 +
   1.106 +    Event                   StartupEvent;
   1.107 +
   1.108 +    // Ticks notifiers - used for time-dependent events such as keep-alive.
   1.109 +    Array<Notifier*>        TicksNotifiers;
   1.110 +};
   1.111 +
   1.112 +}} // namespace Linux::OVR
   1.113 +
   1.114 +#endif // OVR_Linux_DeviceManager_h