Function libeyelink_sys::eyelink_image_data

pub unsafe extern "C" fn eyelink_image_data(
    xsize: *mut INT16, 
    ysize: *mut INT16, 
    type_: *mut INT16
) -> INT16

@internal Get data at start of new image. @return \c -1 if aborted/not in receive, \c 0 if old palette, \c 1 if new palette. ptrs to size: may be NULL