void init_busyboard(struct busyboard *b, const char *devnode) {
int i;
b->fd = open_parport(devnode);
b->trimask = 0;
for (i = 0; i < BUSYBOARD_N_PORTS; ++i) b->out_state[i] = 0;
set_bit(b->fd, BIT_DATA, 0);
set_bit(b->fd, BIT_LATCH_OUT, 0);
set_bit(b->fd, BIT_LATCH_IN, 0);
set_bit(b->fd, BIT_STROBE, 0);
set_bit(b->fd, BIT_N_LD_IN, 1);
}
int init_genlock(SINGLE_QSP_ARG_DECL)
{
int n,i;
if( genlock_active ){
WARN("init_genlock: genlock is already active!?");
return -1;
}
n=HOW_MANY("number of frame buffers to genlock");
if( n < 1 || n > MAX_HEADS ){
sprintf(ERROR_STRING,"do_genlock: number of frame buffers (%d) must be between 1 and %d",n,MAX_HEADS);
WARN(ERROR_STRING);
return -1;
}
gli1.gli_n_heads = n;
for(i=0;i<n;i++){
gli1.gli_fbip[i] = pick_fbi("frame buffer for VSYNC");
gli1.gli_fb_latency[i] = (-1);
gli1.gli_pp_latency[i] = (-1);
gli1.gli_refractory[i]=GL_REFRACTORY; /* wait before adjusting */
}
for(i=0;i<n;i++)
if( gli1.gli_fbip[i] == NULL ) return -1;
if( the_ppp == NULL ){
the_ppp=open_parport(NULL); /* use default */
if( the_ppp == NULL ) return -1;
}
gli1.gli_ppp = the_ppp;
gli1.gli_qsp = THIS_QSP;
genlock_active=1;
return 0;
}
static void test_parport(void)
{
int n,s;
Data_Obj *dp;
u_long *lp;
FB_Info *fbip;
pthread_attr_t attr1;
VBoard_Info vbi1;
PPort_Info ppti1;
u_long l;
pthread_attr_init(&attr1); /* initialize to default values */
pthread_attr_setinheritsched(&attr1,PTHREAD_INHERIT_SCHED);
fbip = pick_fbi("frame buffer for VSYNC");
dp = pick_obj("data vector for latencies");
if( fbip == NULL || dp == NULL ) return;
INSIST_RAM_OBJ(dp,"test_parport")
if( OBJ_PREC(dp) != PREC_UDI ){
sprintf(ERROR_STRING,"latency vector %s (%s) should have precision %s",
OBJ_NAME(dp),PREC_NAME(OBJ_PREC_PTR(dp)),
NAME_FOR_PREC_CODE(PREC_UDI));
WARN(ERROR_STRING);
return;
}
if( OBJ_COMPS(dp) != 2 ){
sprintf(ERROR_STRING,"latency vector %s (%d) should have 2 components",
OBJ_NAME(dp),OBJ_COMPS(dp));
WARN(ERROR_STRING);
return;
}
if( ! IS_CONTIGUOUS(dp) ){
sprintf(ERROR_STRING,"latency vector %s should be contiguous",OBJ_NAME(dp));
WARN(ERROR_STRING);
return;
}
n = OBJ_N_MACH_ELTS(dp)/2;
lp = (u_long *) OBJ_DATA_PTR(dp);
vbi1.vbi_fbip = fbip;
vbi1.vbi_buf = lp;
vbi1.vbi_count = n;
vbi1.vbi_inc = 2;
#ifdef THREAD_SAFE_QUERY
vbi1.vbi_qsp = THIS_QSP;
#endif // THREAD_SAFE_QUERY
lp ++;
if( the_ppp == NULL ){
the_ppp=open_parport(NULL); /* use default */
if( the_ppp == NULL ) return;
}
ppti1.ppti_ppp = the_ppp;
ppti1.ppti_buf = lp;
ppti1.ppti_count = n;
ppti1.ppti_inc = 2;
tvp = NULL; /* force re-zero */
s=read_til_transition(the_ppp,8);
if( s==0 )
s=read_til_transition(the_ppp,8);
/* should now be in the one state */
/* this is the end of the (negative) pulse */
l = delta_usecs(); /* zero the clock */
pthread_create(&vboard_thr,&attr1,vboard_daemon,&vbi1);
pthread_create(&pport_thr,&attr1,pport_logger,&ppti1);
/* should wait for threads here... */
if( pthread_join(vboard_thr,NULL) != 0 ){
perror("pthread_join");
WARN("error joining video board thread");
}
if( pthread_join(pport_thr,NULL) != 0 ){
perror("pthread_join");
WARN("error joining parallel port thread");
}
}