def connect(self, max_attempts=None):
if max_attempts is None:
max_attempts = self.connect_max_attempts
tries = 0
while True:
log.debug("Attempting to connect to JACK server...")
status = jacklib.jack_status_t(0x0)
self.client = jacklib.client_open(self.client_name,
jacklib.JackNoStartServer,
status)
tries += 1
if status.value:
err = get_jack_status_error_string(status)
if status.value & jacklib.JackNameNotUnique:
log.debug(err)
elif status.value & jacklib.JackServerStarted:
# Should not happen, since we use the JackNoStartServer option
log.warning("Unexpected JACK status: %s", err)
else:
log.warning("JACK connection error (attempt %i): %s",
tries, err)
if self.client:
break
if max_attempts and tries >= max_attempts:
log.error(
"Maximum number (%i) of connection attempts reached. Aborting.",
max_attempts)
raise RuntimeError(err)
log.debug("Waiting %.2f seconds to connect again...",
self.connect_interval)
sleep(self.connect_interval)
name = jacklib.get_client_name(self.client)
if name is not None:
self.client_name = name.decode()
else:
raise RuntimeError("Could not get JACK client name.")
jacklib.on_shutdown(self.client, self.shutdown_callback, None)
log.debug(
"Client connected, name: %s UUID: %s",
self.client_name,
jacklib.client_get_uuid(self.client),
)
jacklib.set_port_registration_callback(self.client,
self.port_reg_callback, None)
jacklib.set_port_rename_callback(self.client,
self.port_rename_callback, None)
jacklib.set_property_change_callback(self.client,
self.property_callback, None)
jacklib.activate(self.client)
def jack_client():
status = jacklib.jack_status_t()
client = jacklib.client_open("pyjacklib", jacklib.JackNoStartServer,
status)
if status.value:
err = get_jack_status_error_string(status)
if status.value & jacklib.JackNameNotUnique:
print(f"Non-fatal JACK status: {err}", file=sys.stderr)
elif status.value & jacklib.JackServerStarted:
# Should not happen, since we use the JackNoStartServer option
print(f"Unexpected JACK status: {err}", file=sys.stderr)
else:
raise OSError(f"Error creating JACK client: {err}")
yield client
jacklib.client_close(client)
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
import jacklib
from jacklib.helpers import get_jack_status_error_string
if len(sys.argv) == 3:
portname = sys.argv[1]
pretty_name = sys.argv[2]
else:
sys.exit("Usage: %s <port name> <pretty-name>" % sys.argv[0])
status = jacklib.jack_status_t()
client = jacklib.client_open("set-port-pretty-name", jacklib.JackNoStartServer,
status)
err = get_jack_status_error_string(status)
if status.value:
if status.value & jacklib.JackNameNotUnique:
print("Non-fatal JACK status: %s" % err, file=sys.stderr)
elif status.value & jacklib.JackServerStarted:
# Should not happen, since we use the JackNoStartServer option
print("Unexpected JACK status: %s" % err, file=sys.stderr)
else:
sys.exit("Error connecting to JACK server: %s" % err)
res = jacklib.set_port_pretty_name(client, portname, pretty_name)
if res != -1:
print("Pretty name for port '%s' is now '%s'." % (portname, pretty_name))