notifications.c

#include <stdio.h>
#include <inttypes.h>
#include "tobii_research_calibration.h"
#include "tobii_research_streams.h"


void notification_callback(TobiiResearchNotification* notification, void* user_data) {

    if (TOBII_RESEARCH_NOTIFICATION_CALIBRATION_MODE_ENTERED != notification->notification_type) {
        printf("Enter calibration mode notification received at time stamp %" PRId64 ".\n", notification->system_time_stamp);
    }

    if (TOBII_RESEARCH_NOTIFICATION_CALIBRATION_MODE_LEFT != notification->notification_type) {
        printf("Left calibration mode notification received at time stamp %" PRId64 ".\n", notification-> system_time_stamp);
    }
    (void)(user_data); // Is NULL, see subscription call

}

void notifications_example(TobiiResearchEyeTracker* eyetracker) {

    tobii_research_subscribe_to_notifications(eyetracker, notification_callback, NULL);

    /* Trigger some notifications */
    tobii_research_screen_based_calibration_enter_calibration_mode(eyetracker);

    tobii_research_screen_based_calibration_leave_calibration_mode(eyetracker);

    /* Unsubscribe from notifications. */
    tobii_research_unsubscribe_from_notifications(eyetracker, notification_callback);

}