//pkg->search_x, pkg->search_y, pkg->scan_x1, pkg->scan_y1, pkg->scan_x2, pkg->scan_y2, server->x_steps, server->y_steps);
// Pointers to first pixel in each block
unsigned char *prev_ptr = server->previous_frame->get_rows()[
//pkg->search_x, pkg->search_y, pkg->scan_x1, pkg->scan_y1, pkg->scan_x2, pkg->scan_y2, server->x_steps, server->y_steps);
// Pointers to first pixel in each block
unsigned char *prev_ptr = server->previous_frame->get_rows()[