jack_port_t *
jack_port_by_name_int (jack_client_t *client, const char *port_name, int* free)
{
JSList *node;
for (node = client->ports; node; node = jack_slist_next (node)) {
if (jack_port_name_equals(((jack_port_t *) node->data)->shared, port_name)) {
*free = FALSE;
return (jack_port_t *) node->data;
}
}
unsigned long i, limit;
jack_port_shared_t *port;
limit = client->engine->port_max;
port = &client->engine->ports[0];
for (i = 0; i < limit; i++) {
if (port[i].in_use && jack_port_name_equals (&port[i], port_name)) {
*free = TRUE;
return jack_port_new (client, port[i].id,
client->engine);
}
}
return NULL;
}
int
jack_port_connected_to (const jack_port_t *port, const char *portname)
{
JSList *node;
int ret = FALSE;
/* XXX this really requires a cross-process lock
so that ports/connections cannot go away
while we are checking for them. that's hard,
and has a non-trivial performance impact
for jackd.
*/
pthread_mutex_lock (&((jack_port_t *) port)->connection_lock);
for (node = port->connections; node; node = jack_slist_next (node)) {
jack_port_t *other_port = (jack_port_t *) node->data;
if (jack_port_name_equals (other_port->shared, portname)) {
ret = TRUE;
break;
}
}
pthread_mutex_unlock (&((jack_port_t *) port)->connection_lock);
return ret;
}
jack_port_t *
jack_port_by_name_int (jack_client_t *client, const char *port_name)
{
unsigned long i, limit;
jack_port_shared_t *port;
limit = client->engine->port_max;
port = &client->engine->ports[0];
for (i = 0; i < limit; i++) {
if (port[i].in_use && jack_port_name_equals (&port[i], port_name)) {
return jack_port_new (client, port[i].id,
client->engine);
}
}
return NULL;
}
jack_port_t *
jack_port_by_name (jack_client_t *client, const char *port_name)
{
JSList *node;
jack_port_t* port;
for (node = client->ports_ext; node; node = jack_slist_next (node)) {
port = node->data;
if (jack_port_name_equals (port->shared, port_name)) {
/* Found port, return the cached structure. */
return port;
}
}
/* Otherwise allocate a new port structure, keep it in the
* ports_ext list for later use. */
port = jack_port_by_name_int (client, port_name);
if (port != NULL)
client->ports_ext =
jack_slist_prepend (client->ports_ext, port);
return port;
}