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/*
/osxptb/trunk/PsychSourceGL/Source/OSX/Eyelink/EyelinkTrackerTime.c
PROJECTS: Eyelink
AUTHORS:
f.w.cornelissen@rug.nl fwc
PLATFORMS: OSX, windows
HISTORY:
21/01/07 fwc added based on EyelinkReadTime function
TARGET LOCATION:
Eyelink.mexmac resides in:
PsychHardware/EyelinkToolbox/EyelinkBasic
*/
#include "PsychEyelink.h"
static char useString[] = "[time =] Eyelink('TrackerTime')";
static char synopsisString[] =
"Returns the current tracker time (in seconds)\n"
"since the tracker application started.\n";
static char seeAlsoString[] = "";
/*
ROUTINE: EyelinkTrackerTime
PURPOSE:
Returns the current tracker time (in seconds)
since the tracker application started, uses usec precision.
We use the eyelink_tracker_double_usec() function, and scale to seconds, keeping precision
*/
PsychError EyelinkTrackerTime(void)
{
double time;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check to see if the user supplied superfluous arguments
PsychErrorExit(PsychCapNumInputArgs(0));
PsychErrorExit(PsychRequireNumInputArgs(0));
PsychErrorExit(PsychCapNumOutputArgs(1));
// Verify eyelink is up and running
EyelinkSystemIsConnected();
EyelinkSystemIsInitialized();
time = eyelink_tracker_double_usec()/1000000;
PsychCopyOutDoubleArg(1, FALSE, time);
return(PsychError_none);
}
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