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/*
/osxptb/trunk/PsychSourceGL/Source/OSX/Eyelink/EyelinkStartRecording.c
PROJECTS: Eyelink
AUTHORS:
cburns@berkeley.edu cdb
E.Peters@ai.rug.nl emp
f.w.cornelissen@med.rug.nl fwc
PLATFORMS: Currently only OS X
HISTORY:
11/23/05 cdb Created.
TARGET LOCATION:
Eyelink.mexmac resides in:
EyelinkToolbox
*/
#include "PsychEyelink.h"
static char useString[] = "[startrecording_error =] Eyelink('StartRecording' [,file_samples, file_events, link_samples, link_events] )";
static char synopsisString[] = "Start recording with data types requested";
static char seeAlsoString[] = "";
/*
ROUTINE: EYELINKstartrecording
PURPOSE:
uses INT16 start_recording(INT16 file_samples, INT16 file_events,
INT16 link_samples, INT16 link_events);
Start recording with data types requested
Check that all requested link data is arriving
return 0 if OK, else trial exit code
Start data recording to EDF file, BEFORE DISPLAY.
You should always start recording 50-100 msec before required
otherwise you may lose a few msec of data */
PsychError EyelinkStartRecording(void)
{
int iFileEvents = 1;
int iFileSamples = 1;
int iLinkEvents = 1;
int iLinkSamples = 1;
int iStatus = -1;
char strMsg[256];
memset(strMsg, 0, sizeof(strMsg));
// Add help strings
PsychPushHelp(useString, synopsisString, seeAlsoString);
// Output help if asked
if(PsychIsGiveHelp()) {
PsychGiveHelp();
return(PsychError_none);
}
// Check arguments
PsychErrorExit(PsychCapNumInputArgs(4));
PsychErrorExit(PsychCapNumOutputArgs(1));
// Verify eyelink is up and running
EyelinkSystemIsConnected();
EyelinkSystemIsInitialized();
// Check if default values are overridden
PsychCopyInIntegerArg(1, FALSE, &iFileSamples);
PsychCopyInIntegerArg(2, FALSE, &iFileEvents);
PsychCopyInIntegerArg(3, FALSE, &iLinkSamples);
PsychCopyInIntegerArg(4, FALSE, &iLinkEvents);
iStatus = (int) start_recording((INT16) iFileSamples,(INT16) iFileEvents,(INT16) iLinkSamples,(INT16) iLinkEvents);
if (iStatus != 0) {
// BUG? Recording starts and appears to be working, but does not
// return 0 and aborts if we use the PsychErrorExit...
mexPrintf("Eyelink startrecording error %d\n", iStatus);
//sprintf(strMsg, "Eyelink startrecording error %d\n", iStatus);
//PsychErrorExitMsg(PsychError_internal, strMsg);
}
// Copy out result
PsychCopyOutDoubleArg(1, FALSE, iStatus);
return(PsychError_none);
}
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