static void ch_close(struct senseye_ch* ch)
{
if (!ch || !ch->in_pr)
return;
ch_flush(ch);
struct senseye_priv* chp = ch->in_pr;
arcan_shmif_drop(&chp->cont);
ch->in->free(&ch->in);
chp->running = false;
}
int main(int argc, char** argv)
{
struct arg_arr* aarr;
struct arcan_shmif_cont cont = arcan_shmif_open(
SEGID_APPLICATION, SHMIF_ACQUIRE_FATALFAIL, &aarr);
arcan_event ev = {
.ext.kind = ARCAN_EVENT(CLOCKREQ),
.ext.clock.rate = 2,
.ext.clock.dynamic = (argc > 1 && strcmp(argv[1], "dynamic") == 0)
};
arcan_shmif_enqueue(&cont, &ev);
ev.ext.clock.dynamic = false;
int tbl[] = {20, 40, 42, 44, 60, 80, 86, 88, 100, 120};
int step = 0;
for (size_t i=0; i < sizeof(tbl)/sizeof(tbl[0]); i++){
ev.ext.clock.once = true;
ev.ext.clock.rate = tbl[i];
ev.ext.clock.id = i + 2; /* 0 index and 1 is reserved */
arcan_shmif_enqueue(&cont, &ev);
}
while(arcan_shmif_wait(&cont, &ev) != 0){
if (ev.category == EVENT_TARGET)
switch(ev.tgt.kind){
case TARGET_COMMAND_STEPFRAME:
printf("step: %d, source: %d\n",
ev.tgt.ioevs[0].iv, ev.tgt.ioevs[1].iv);
if (ev.tgt.ioevs[1].iv > 1){
if (step == ev.tgt.ioevs[1].iv-2)
printf("custom timer %d OK\n", step);
else
printf("timer out of synch, expected %d got %d\n",
step, ev.tgt.ioevs[1].iv-2);
step++;
}
break;
case TARGET_COMMAND_EXIT:
goto done; /* break(1), please */
default:
break;
}
}
done:
arcan_shmif_drop(&cont);
return EXIT_SUCCESS;
}
int a12helper_a12srv_shmifcl(
struct a12_state* S, const char* cp, int fd_in, int fd_out)
{
if (!cp)
cp = getenv("ARCAN_CONNPATH");
else
setenv("ARCAN_CONNPATH", cp, 1);
if (!cp){
debug_print(1, "No connection point was specified");
return -ENOENT;
}
/* Channel - connection mapping */
struct cl_state cl_state = {};
/* Open / set the primary connection */
cl_state.wnd[0] = arcan_shmif_open(SEGID_UNKNOWN, SHMIF_NOACTIVATE, NULL);
if (!cl_state.wnd[0].addr){
debug_print(1, "Couldn't connect to an arcan display server");
return -ENOENT;
}
cl_state.n_segments = 1;
debug_print(1, "Segment connected");
a12_set_destination(S, &cl_state.wnd[0], 0);
/* set to non-blocking */
int flags = fcntl(fd_in, F_GETFL);
fcntl(fd_in, F_SETFL, flags | O_NONBLOCK);
uint8_t* outbuf;
size_t outbuf_sz = 0;
debug_print(1, "got proxy connection, waiting for source");
int status;
while (-1 != (status = a12helper_poll_triple(
cl_state.wnd[0].epipe, fd_in, outbuf_sz ? fd_out : -1, 4))){
if (status & A12HELPER_WRITE_OUT){
if (outbuf_sz || (outbuf_sz = a12_channel_flush(S, &outbuf))){
ssize_t nw = write(fd_out, outbuf, outbuf_sz);
if (nw > 0){
outbuf += nw;
outbuf_sz -= nw;
}
}
}
if (status & A12HELPER_DATA_IN){
uint8_t inbuf[9000];
ssize_t nr = read(fd_in, inbuf, 9000);
if (-1 == nr && errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR){
debug_print(1, "failed to read from input: %d", errno);
break;
}
debug_print(2, "unpack %zd bytes", nr);
a12_channel_unpack(S, inbuf, nr, NULL, on_cl_event);
}
/* 1 client can have multiple segments */
for (size_t i = 0, count = cl_state.n_segments; i < 256 && count; i++){
if (!cl_state.wnd[i].addr)
continue;
count--;
struct arcan_event newev;
int sc;
while (( sc = arcan_shmif_poll(&cl_state.wnd[i], &newev)) > 0){
/* we got a descriptor passing event, some of these we could/should discard,
* while others need to be forwarded as a binary- chunk stream and kept out-
* of order on the other side */
if (arcan_shmif_descrevent(&newev)){
debug_print(1, "(cl:%zu) ign-descr-event: %s",
i, arcan_shmif_eventstr(&newev, NULL, 0));
}
else {
debug_print(2, "enqueue %s", arcan_shmif_eventstr(&newev, NULL, 0));
a12_channel_enqueue(S, &newev);
}
}
}
/* we might have gotten data to flush, so use that as feedback */
if (!outbuf_sz){
outbuf_sz = a12_channel_flush(S, &outbuf);
if (outbuf_sz)
debug_print(2, "output buffer size: %zu", outbuf_sz);
}
}
/* though a proper cleanup would cascade, it doesn't help being careful */
for (size_t i = 0, count = cl_state.n_segments; i < 256 && count; i++){
if (!cl_state.wnd[i].addr)
continue;
arcan_shmif_drop(&cl_state.wnd[i]);
cl_state.wnd[i].addr = NULL;
}
return 0;
}
