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/****************************************************************************
* *
* OpenNI 1.x Alpha *
* Copyright (C) 2011 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* OpenNI is free software: you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as published *
* by the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* OpenNI is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with OpenNI. If not, see <http://www.gnu.org/licenses/>. *
* *
****************************************************************************/
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include <XnOS.h>
//---------------------------------------------------------------------------
// Global Variables
//---------------------------------------------------------------------------
XnOSTimer g_xnOSHighResGlobalTimer;
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
XN_C_API XnStatus xnOSGetEpochTime(XnUInt32* nEpochTime)
{
// Local function variables
*nEpochTime = (XnUInt32)time(NULL);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSGetTimeStamp(XnUInt64* nTimeStamp)
{
// Local function variables
XnStatus nRetVal = XN_STATUS_OK;
// Get the high resolution global timer value
nRetVal = xnOSGetHighResTimeStamp(nTimeStamp);
XN_IS_STATUS_OK(nRetVal);
// Convert from microseconds to milliseconds
*nTimeStamp /= 1000;
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSGetHighResTimeStamp(XnUInt64* nTimeStamp)
{
// Local function variables
XnStatus nRetVal = XN_STATUS_OK;
// TODO: Check if the core subsystem is initialized
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_OUTPUT_PTR(nTimeStamp);
// Get the high resolution global timer value
nRetVal = xnOSQueryTimer(g_xnOSHighResGlobalTimer, nTimeStamp);
XN_IS_STATUS_OK(nRetVal);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSSleep(XnUInt32 nMilliseconds)
{
// Sleep via the OS
Sleep(nMilliseconds);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSStartTimer(XnOSTimer* pTimer)
{
// Local function variables
XnBool bRetVal = FALSE;
LARGE_INTEGER nTicksPerSecond;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pTimer);
bRetVal = QueryPerformanceFrequency(&nTicksPerSecond);
XN_IS_BOOL_OK_RET(bRetVal, XN_STATUS_OS_TIMER_CREATION_FAILED);
pTimer->dTicksPerTimeUnit = (XnDouble)nTicksPerSecond.QuadPart / 1000.0;
bRetVal = QueryPerformanceCounter(&pTimer->nStartTick);
XN_IS_BOOL_OK_RET(bRetVal, XN_STATUS_OS_TIMER_QUERY_FAILED);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSStartHighResTimer(XnOSTimer* pTimer)
{
// Local function variables
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = xnOSStartTimer(pTimer);
XN_IS_STATUS_OK(nRetVal);
// Convert from microseconds to milliseconds
pTimer->dTicksPerTimeUnit /= 1000.0;
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSQueryTimer(XnOSTimer Timer, XnUInt64* pnTimeSinceStart)
{
// Local function variables
XnBool bRetVal = FALSE;
LARGE_INTEGER nCurrTick;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_OUTPUT_PTR(pnTimeSinceStart);
if (Timer.dTicksPerTimeUnit == 0)
{
return (XN_STATUS_OS_INVALID_TIMER);
}
bRetVal = QueryPerformanceCounter(&nCurrTick);
XN_IS_BOOL_OK_RET(bRetVal, XN_STATUS_OS_TIMER_QUERY_FAILED);
*pnTimeSinceStart = XnUInt64((nCurrTick.QuadPart - Timer.nStartTick.QuadPart) / Timer.dTicksPerTimeUnit);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSStopTimer(XnOSTimer* pTimer)
{
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pTimer);
if (pTimer->dTicksPerTimeUnit == 0)
{
return (XN_STATUS_OS_INVALID_TIMER);
}
xnOSMemSet(pTimer, 0, sizeof(XnOSTimer));
// All is good...
return (XN_STATUS_OK);
}
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