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view libovr/Src/osx/OVR_OSX_DeviceManager.h @ 10:b2abb08c8f94

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proper FPS-style vr tracking
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 20 Sep 2013 06:49:39 +0300
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1 /************************************************************************************
2
3 Filename : OVR_OSX_DeviceManager.h
4 Content : OSX specific DeviceManager header.
5 Created : March 14, 2013
6 Authors : Lee Cooper
7
8 Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved.
9
10 Use of this software is subject to the terms of the Oculus license
11 agreement provided at the time of installation or download, or which
12 otherwise accompanies this software in either electronic or hard copy form.
13
14 *************************************************************************************/
15
16 #ifndef OVR_OSX_DeviceManager_h
17 #define OVR_OSX_DeviceManager_h
18
19 #include "OVR_DeviceImpl.h"
20
21 #include "Kernel/OVR_Timer.h"
22
23 #include <IOKit/hid/IOHIDManager.h>
24 #include <CoreGraphics/CGDirectDisplay.h>
25 #include <CoreGraphics/CGDisplayConfiguration.h>
26
27
28 namespace OVR { namespace OSX {
29
30 class DeviceManagerThread;
31
32 //-------------------------------------------------------------------------------------
33 // ***** OSX DeviceManager
34
35 class DeviceManager : public DeviceManagerImpl
36 {
37 public:
38 DeviceManager();
39 ~DeviceManager();
40
41 // Initialize/Shutdown manager thread.
42 virtual bool Initialize(DeviceBase* parent);
43 virtual void Shutdown();
44
45 virtual ThreadCommandQueue* GetThreadQueue();
46 virtual ThreadId GetThreadId() const;
47
48 virtual DeviceEnumerator<> EnumerateDevicesEx(const DeviceEnumerationArgs& args);
49
50 virtual bool GetDeviceInfo(DeviceInfo* info) const;
51
52 protected:
53 static void displayReconfigurationCallBack (CGDirectDisplayID display,
54 CGDisplayChangeSummaryFlags flags,
55 void *userInfo);
56
57 public: // data
58 Ptr<DeviceManagerThread> pThread;
59 };
60
61 //-------------------------------------------------------------------------------------
62 // ***** Device Manager Background Thread
63
64 class DeviceManagerThread : public Thread, public ThreadCommandQueue
65 {
66 friend class DeviceManager;
67 enum { ThreadStackSize = 32 * 1024 };
68 public:
69 DeviceManagerThread();
70 ~DeviceManagerThread();
71
72 virtual int Run();
73
74 // ThreadCommandQueue notifications for CommandEvent handling.
75 virtual void OnPushNonEmpty_Locked()
76 {
77 CFRunLoopSourceSignal(CommandQueueSource);
78 CFRunLoopWakeUp(RunLoop);
79 }
80
81 virtual void OnPopEmpty_Locked() {}
82
83
84 // Notifier used for different updates (EVENT or regular timing or messages).
85 class Notifier
86 {
87 public:
88
89 // Called when timing ticks are updated. // Returns the largest number of microseconds
90 // this function can wait till next call.
91 virtual UInt64 OnTicks(UInt64 ticksMks)
92 { OVR_UNUSED1(ticksMks); return Timer::MksPerSecond * 1000; }
93 };
94
95 // Add notifier that will be called at regular intervals.
96 bool AddTicksNotifier(Notifier* notify);
97 bool RemoveTicksNotifier(Notifier* notify);
98
99 CFRunLoopRef GetRunLoop()
100 { return RunLoop; }
101
102 void Shutdown();
103 private:
104 CFRunLoopRef RunLoop;
105
106 CFRunLoopSourceRef CommandQueueSource;
107
108 static void staticCommandQueueSourceCallback(void* pContext);
109 void commandQueueSourceCallback();
110
111 Event StartupEvent;
112
113 // Ticks notifiers. Used for time-dependent events such as keep-alive.
114 Array<Notifier*> TicksNotifiers;
115 };
116
117 }} // namespace OSX::OVR
118
119 #endif // OVR_OSX_DeviceManager_h