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/*
PsychToolbox3/Source/Common/WaitSecsMex/WaitSecsMex.c
PLATFORMS: Matlab only
AUTHORS:
Allen Ingling awi Allen.Ingling@nyu.edu
HISTORY:
8/06/02 awi wrote it.
DESCRIPTION
WaitSecsMex is a variant of WaitSecs which strips out the Psychtoolbox mex/mx abstraction layer.
The purposes are to provide a simplified example to Mathworks and to verify that the psychtoolbox mex/mx abstraction layer
is not the source of trouble.
*/
#include "WaitSecsMex.h"
void PsychGetPrecisionTimerSeconds(double *secs)
{
UInt64 ticks;
ticks=AudioGetCurrentHostTime();
*secs=(double)(AudioConvertHostTimeToNanos(ticks) / (double)1000000000.0);
}
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
double startTime, endTime, currentTime;
PsychGetPrecisionTimerSeconds(&startTime);
if(nlhs > 0)
mexErrMsgTxt("WaitSecsMex uses no output arguments.");
if(nrhs > 1)
mexErrMsgTxt("WaitSecsMex requires only one input argument.");
if(nrhs < 1)
mexErrMsgTxt("WaitSecsMex requires one input argument.");
if(mxGetM(prhs[0]) * mxGetN(prhs[0]) != 1)
mexErrMsgTxt("WaitSecs requires 1x1 double as input argument");
endTime=mxGetPr(prhs[0])[0] + startTime;
for(PsychGetPrecisionTimerSeconds(¤tTime);currentTime<endTime;PsychGetPrecisionTimerSeconds(¤tTime))
;
}
/*
PsychError WAITSECSWaitSecs(void)
{
double *waitPeriod, readTime, endTime;
//grab the time right away
PsychGetPrecisionTimerSeconds(&readTime);
//check to see if the user supplied superfluous arguments
PsychErrorExit(PsychCapNumOutputArgs(0));
PsychErrorExit(PsychCapNumInputArgs(1));
//Allocate a return matrix and load it with the depth values.
PsychAllocInDoubleArg(1,TRUE,&waitPeriod);
endTime = *waitPeriod + readTime;
while(readTime < endTime)
PsychGetPrecisionTimerSeconds(&readTime);
return(PsychError_none);
}
*/
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