int acquire_tracker(int t_key, int c_key, int port)
{
new_tracker_transforms(1);
onitcs_init(0, 0, 0);
if ((buttons = onitcs_nbuttons()))
button = (int *) calloc(buttons, sizeof (int));
printf("ONIT %d %d %d\n", onitcs_naxes(),
onitcs_nbuttons(),
onitcs_npoints());
return get_tracker_status();
}
int acquire_tracker(int t_key, int c_key, int port)
{
/* Acquire the tracker and controller shared memory segments. */
#ifndef _WIN32
if ((tracker_id = shmget(t_key, sizeof (struct tracker_header), 0)) >= 0)
tracker = (struct tracker_header *) shmat(tracker_id, 0, 0);
if ((control_id = shmget(c_key, sizeof (struct control_header), 0)) >= 0)
control = (struct control_header *) shmat(control_id, 0, 0);
#else
wchar_t shmkey[256];
swprintf(shmkey, 256, L"%d", t_key);
if ((tracker_id = OpenFileMapping(FILE_MAP_WRITE, FALSE, shmkey)))
tracker = (struct tracker_header *)
MapViewOfFile(tracker_id, FILE_MAP_WRITE, 0, 0, 0);
else
tracker = (struct tracker_header *) (-1);
swprintf(shmkey, 256, L"%d", c_key);
if ((control_id = OpenFileMapping(FILE_MAP_WRITE, FALSE, shmkey)))
control = (struct control_header *)
MapViewOfFile(control_id, FILE_MAP_WRITE, 0, 0, 0);
else
control = (struct control_header *) (-1);
#endif
/* Allocate storage for button states. */
if (control != (struct control_header *) (-1))
buttons = (uint32_t *) calloc(control->but_count, sizeof (uint32_t));
/* Open a UDP socket for receiving. */
if (port)
{
if ((sock = socket(PF_INET, SOCK_DGRAM, 0)) >= 0)
{
sockaddr_t addr;
/* Accept connections from any address on the given port. */
addr.sin_family = AF_INET;
addr.sin_port = htons((short) port);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
/* Bind the socket to this address. */
if (bind(sock, (struct sockaddr *) &addr, sizeof (sockaddr_t))>= 0)
{
transforms = 1;
}
else error("bind %d : %s", port, system_error());
}
else error("socket : %s", system_error());
}
/* Initialize the tracker transform. */
if (tracker != (struct tracker_header *) (-1))
new_tracker_transforms((int) tracker->count);
return 1;
}
