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#!/usr/bin/env python3
from argparse import ArgumentParser
import dbus
class A2JControl:
"""
Class holding all data and relevant functions to interact with the a2j dbus
controller interface.
"""
service_name = 'org.gna.home.a2jmidid'
control_interface_name = service_name + '.control'
controller_interface = None
parser = None
args = None
def add_arg_parser(self):
self.parser = ArgumentParser(
description='Bridge ALSA MIDI to JACK MIDI')
self.parser.add_argument(
'--start',
action='store_true',
default=False,
help='Start bridging')
self.parser.add_argument(
'--stop',
action='store_true',
default=False,
help='Stop bridging')
self.parser.add_argument(
'--exit',
action='store_true',
default=False,
help='Exit a2j bridge dbus service')
self.parser.add_argument(
'--status',
action='store_true',
default=False,
help='Display bridging status')
self.parser.add_argument(
'--gjcn', '--jack-client-name',
action='store_true',
default=False,
help='Get JACK client name')
self.parser.add_argument(
'--ma2jp',
default=None,
nargs=2,
help='Map ALSA input port to JACK output port' +
' (requires ALSA client ID and JACK port ID arguments)')
self.parser.add_argument(
'--ma2jc',
default=None,
nargs=2,
help='Map ALSA output port to JACK input port ' +
'(requires ALSA client ID and JACK port ID arguments)')
self.parser.add_argument(
'--mj2a',
default=None,
nargs=1,
help='Map JACK port to ALSA port (requires JACK port name)')
self.parser.add_argument(
'--ehw',
action='store_true',
default=False,
help='Enable export of ALSA hardware ports')
self.parser.add_argument(
'--dhw',
action='store_true',
default=False,
help='Disable export of ALSA hardware ports')
self.parser.add_argument(
'--aup',
action='store_true',
default=False,
help='Allow unique port names')
self.parser.add_argument(
'--dup',
action='store_true',
default=False,
help='Disallow unique port names')
self.args = self.parser.parse_args()
def initialize_dbus_controller_interface(self):
controller = dbus.SessionBus().get_object(self.service_name, "/")
self.controller_interface = dbus.Interface(
controller,
self.control_interface_name)
def controller_start(self):
print('--- start')
self.controller_interface.start()
def controller_stop(self):
print('--- stop')
self.controller_interface.stop()
def controller_exit(self):
print('--- exit')
self.controller_interface.exit()
def controller_status(self):
print('--- status')
if self.controller_interface.is_started():
print('Bridging enabled')
else:
print('Bridging disabled')
if self.controller_interface.get_hw_export():
print('Hardware exported')
else:
print('Hardware not exported')
if self.controller_interface.get_disable_port_uniqueness():
print('Avoiding unique port names')
else:
print('Allowing unique port names')
def controller_map_alsa_in_to_jack_playback(
self,
alsa_client_id,
jack_port):
print('--- map ALSA to JACK playback port')
print('{}'.format(self.controller_interface.map_alsa_to_jack_port(
alsa_client_id,
jack_port,
True)))
def controller_map_alsa_out_to_jack_capture(
self,
alsa_client_id,
jack_port):
print('--- map ALSA to JACK capture port')
print('{}'.format(self.controller_interface.map_alsa_to_jack_port(
alsa_client_id,
jack_port,
False)))
def controller_map_jack_port_to_alsa(self, jack_port):
print('--- map JACK to ALSA port')
out = self.controller_interface.map_jack_port_to_alsa(jack_port)
print('{}:{} ({}:{})'.format(out[0], out[1], out[2], out[3]))
def controller_get_jack_client_name(self):
print('--- get jack client name')
print(self.controller_interface.get_jack_client_name())
def controller_export_hardware_ports(self, state):
if state:
print('--- enable export of hardware ports')
self.controller_interface.set_hw_export(True)
else:
print('--- disable export of hardware ports')
self.controller_interface.set_hw_export(False)
def controller_set_port_name_uniqueness(self, state):
if state:
print('--- allow unique port names')
self.controller_interface.set_disable_port_uniqueness(False)
else:
print('--- disallow unique port names')
self.controller_interface.set_disable_port_uniqueness(True)
def call_controller_function(self):
if self.args.start:
self.controller_start()
elif self.args.stop:
self.controller_stop()
elif self.args.exit:
self.controller_exit()
elif self.args.status:
self.controller_status()
elif self.args.gjcn:
self.controller_get_jack_client_name()
elif self.args.ma2jp:
self.controller_map_alsa_in_to_jack_playback(
self.args.ma2jp[0],
self.args.ma2jp[1])
elif self.args.ma2jc:
self.controller_map_alsa_in_to_jack_playback(
self.args.ma2jc[0],
self.args.ma2jc[1])
elif self.args.mj2a:
self.controller_map_jack_port_to_alsa(self.args.mj2a[0])
elif self.args.ehw:
self.controller_export_hardware_ports(True)
elif self.args.dhw:
self.controller_export_hardware_ports(False)
elif self.args.dup:
self.controller_set_port_name_uniqueness(False)
elif self.args.aup:
self.controller_set_port_name_uniqueness(True)
else:
self.parser.print_help()
def __init__(self):
self.initialize_dbus_controller_interface()
self.add_arg_parser()
self.call_controller_function()
if __name__ == '__main__':
A2JControl()
|
