Function libeyelink_sys::eyelink_data_count

pub unsafe extern "C" fn eyelink_data_count(
    samples: INT16, 
    events: INT16
) -> INT16

@ingroup messaging Counts total items in queue: samples, events, or both.

@param samples If non-zero count the samples. @param events If non-zero count the events. @return Total number of samples and events is in the queue.

\b Example:

\code


int check_sample_event_status(int link_samples, int link_events)
{
UINT32 t = current_time();
int i;

while(current_time() < t + 300)
{
int arrived = 1;
if((i=check_recording())!=0) return i;

if(link_samples)
if(eyelink_data_count(1,0)==0)
arrived = 0;

if(link_events)
if(eyelink_data_count(0,1)==0)
arrived = 0;

if(arrived) return 0;
}

return -1;
}
\endcode