a2j_control

   1 #!/usr/bin/env python
   2
   3 name_base = 'org.gna.home.a2jmidid'
   4 control_interface_name = name_base + '.control'
   5 service_name = name_base
   6
   7 import sys
   8 import os
   9 from traceback import print_exc
  10
  11 import dbus
  12
  13 def main():
  14     if len(sys.argv) == 1:
  15         print("Usage: %s [command] [command] ..." % os.path.basename(sys.argv[0]))
  16         print("Commands:")
  17         print("    exit                        - exit a2j bridge dbus service")
  18         print("    start                       - start bridging")
  19         print("    stop                        - stop brdiging")
  20         print("    status                      - get bridging status")
  21         print("    gjcn                        - get JACK client name")
  22         print("    ma2jp <client_id> <port_id> - map ALSA to JACK playback port")
  23         print("    ma2jc <client_id> <port_id> - map ALSA to JACK capture port")
  24         print("    mj2a <jack_port_name>       - map JACK port to ALSA port")
  25         print("    ehw                         - enable export of hardware ports")
  26         print("    dhw                         - disable export of hardware ports")
  27         print("    dup                         - disallow unique port names")
  28         print("    aup                         - allow unique port names")
  29         sys.exit(0)
  30
  31     bus = dbus.SessionBus()
  32
  33     controller = bus.get_object(service_name, "/")
  34     control_iface = dbus.Interface(controller, control_interface_name)
  35
  36     # check arguments
  37     index = 1
  38     while index < len(sys.argv):
  39         arg = sys.argv[index]
  40         index += 1
  41         try:
  42             if arg == "exit":
  43                 print("--- exit")
  44                 control_iface.exit()
  45             elif arg == "start":
  46                 print("--- start")
  47                 control_iface.start()
  48             elif arg == "stop":
  49                 print("--- stop")
  50                 control_iface.stop()
  51             elif arg == "status":
  52                 print("--- status")
  53                 if control_iface.is_started():
  54                     print("Bridging enabled")
  55                 else:
  56                     print("Bridging disabled")
  57                 if control_iface.get_hw_export():
  58                     print("Hardware exported")
  59                 else:
  60                     print("Hardware not exported")
  61                 if control_iface.get_disable_port_uniqueness():
  62                     print("Avoiding unique port names")
  63                 else:
  64                     print("Allowing unique port names")
  65             elif arg == "gjcn":
  66                 print("--- get jack client name")
  67                 print(control_iface.get_jack_client_name())
  68             elif arg == 'ma2jp':
  69                 print("--- map ALSA to JACK playback port")
  70                 if index + 1 >= len(sys.argv):
  71                     print("map ALSA to JACK playback port command requires ALSA client ID and ALSA port ID arguments")
  72                     sys.exit()
  73                 client_id = sys.argv[index]
  74                 index += 1
  75                 port_id = sys.argv[index]
  76                 index += 1
  77
  78                 print("'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, True))
  79             elif arg == 'ma2jc':
  80                 print("--- map ALSA to JACK capture port")
  81                 if index + 1 >= len(sys.argv):
  82                     print("map ALSA to JACK capture port command requires ALSA client ID and ALSA port ID arguments")
  83                     sys.exit()
  84                 client_id = sys.argv[index]
  85                 index += 1
  86                 port_id = sys.argv[index]
  87                 index += 1
  88
  89                 print("'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, False))
  90             elif arg == 'mj2a':
  91                 print("--- map JACK to ALSA port")
  92                 if index >= len(sys.argv):
  93                     print("map JACK to ALSA port command requires JACK port name argument")
  94                     sys.exit()
  95                 jack_port = sys.argv[index]
  96                 index += 1
  97
  98                 out = control_iface.map_jack_port_to_alsa(jack_port)
  99                 print("%u:%u ('%s':'%s')" % (int(out[0]), int(out[1]), str(out[2]), str(out[3])))
 100             elif arg == 'ehw':
 101                 print("--- enable export of hardware ports")
 102                 control_iface.set_hw_export(True)
 103             elif arg == 'dhw':
 104                 print("--- disable export of hardware ports")
 105                 control_iface.set_hw_export(False)
 106             elif arg == 'aup':
 107                 print("--- allow unique port names")
 108                 control_iface.set_disable_port_uniqueness(False)
 109             elif arg == 'dup':
 110                 print("--- disallow unique port names")
 111                 control_iface.set_disable_port_uniqueness(True)
 112             else:
 113                 print("Unknown command '%s'" % arg)
 114         except dbus.DBusException as e:
 115             print("DBus exception: %s" % str(e))
 116
 117 if __name__ == '__main__':
 118     main()