CATTimeWarp Class Reference
[Common Accessibility Technology [CAT] library]

#include <CATTimeWarp.h>

Inheritance diagram for CATTimeWarp:

List of all members.

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Detailed Description

Time function interception, made for slowing down video games.

CATTimeWarp works by intercepting the timing functions that games typically use and scaling them to the desired speed.

To avoid the horrible results of negative diff values, it stores the last value each of the hooked functions returned natively and its internal calculated value. The next time that function is called, the result is the scaled time difference between the last call and the current call.

Currently hooking timeGetTime(), GetTickCount(), and QueryPerformanceCounter().

Usage:

1. First call HookFunctions() to start it. It will hook all of the functions and set the speed to 1.0 (normal).
2. Call SetSpeed() with the percentage of normal speed that you wish to run the process at (recommended 0.1f - 1.0f).

Definition at line 41 of file CATTimeWarp.h.

Public Member Functions
	CATTimeWarp ()
virtual	~CATTimeWarp ()
CATResult	HookFunctions ()
CATResult	SetSpeed (CATFloat32 speed)
CATFloat32	GetSpeed ()
Protected Member Functions
void	AdjustSaveTime (LARGE_INTEGER *lastPerf, DWORD *lastTick, DWORD *lastTime)
Static Protected Member Functions
static void	OnTimeGetTime (CATHOOK *hookInst)
	Hook function - receives control when timeGetTime is called.
static void	OnQueryPerformanceCounter (CATHOOK *hookInst, LARGE_INTEGER *lpCount)
	Hook function - receives control when QueryPerformanceCounter is called.
static void	OnGetTickCount (CATHOOK *hookInst)
	Hook function - receives control when GetTickCount is called.
static void	FixupQPC (CATHOOK *hookInst, LARGE_INTEGER *lpCount)
	Adjust timer for QueryPerformanceCounter.
static void	FixupTime (CATHOOK *hookInst, DWORD *time)
	Adjust timer for timeGetTime().
static void	FixupTick (CATHOOK *hookInst, DWORD *tick)
	Adjust timer for GetTickCount().
Protected Attributes
CATCritSec	fLock
	Critical section for timer data.
CATFloat32	fSpeed
	Speed (0.1 - 1.0) to run at.
HMODULE	fWinmmDLL
	winmm.dll module handle
HMODULE	fKernelDLL
	kernel32.dll module handle
LARGE_INTEGER	fLastPerfCounter
	Last calculated result for QueryPerformanceCounter().
DWORD	fLastTimeGetTime
	Last calculated result for timeGetTime().
DWORD	fLastTickCount
	Last calculated result for GetTickCount().
LARGE_INTEGER	fLastRealPerfCounter
	Last real system result for QueryPerformanceCounter().
DWORD	fLastRealTimeGetTime
	Last real system result for timeGetTime().
DWORD	fLastRealTickCount
	Last real system result for GetTickCount().
Static Protected Attributes
static CATINTERCEPT_DLL_TABLE_ENTRY	kKernel32Funcs []
	Kernel32 functions to hook.
static CATINTERCEPT_DLL_TABLE_ENTRY	kWinMMFuncs []
	WinMM functions to hook.

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The documentation for this class was generated from the following files:

• CAT/CATTimeWarp.h
• CAT/CATTimeWarp.cpp

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