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         sys.exit(0)
  28
  29     bus = dbus.SessionBus()
  30
  31     controller = bus.get_object(service_name, "/")
  32     control_iface = dbus.Interface(controller, control_interface_name)
  33
  34     # check arguments
  35     index = 1
  36     while index < len(sys.argv):
  37         arg = sys.argv[index]
  38         index += 1
  39         try:
  40             if arg == "exit":
  41                 print "--- exit"
  42                 control_iface.exit()
  43             elif arg == "start":
  44                 print "--- start"
  45                 control_iface.start()
  46             elif arg == "stop":
  47                 print "--- stop"
  48                 control_iface.stop()
  49             elif arg == "status":
  50                 print "--- status"
  51                 if control_iface.is_started():
  52                     print "Bridging enabled"
  53                 else:
  54                     print "Bridging disabled"
  55             elif arg == "gjcn":
  56                 print "--- get jack client name"
  57                 print control_iface.get_jack_client_name()
  58             elif arg == 'ma2jp':
  59                 print "--- map ALSA to JACK playback port"
  60                 if index + 1 >= len(sys.argv):
  61                     print "map ALSA to JACK playback port command requires ALSA client ID and ALSA port ID arguments"
  62                     sys.exit()
  63                 client_id = sys.argv[index]
  64                 index += 1
  65                 port_id = sys.argv[index]
  66                 index += 1
  67
  68                 print "'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, True)
  69             elif arg == 'ma2jc':
  70                 print "--- map ALSA to JACK capture port"
  71                 if index + 1 >= len(sys.argv):
  72                     print "map ALSA to JACK capture port command requires ALSA client ID and ALSA port ID arguments"
  73                     sys.exit()
  74                 client_id = sys.argv[index]
  75                 index += 1
  76                 port_id = sys.argv[index]
  77                 index += 1
  78
  79                 print "'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, False)
  80             elif arg == 'mj2a':
  81                 print "--- map JACK to ALSA port"
  82                 if index >= len(sys.argv):
  83                     print "map JACK to ALSA port command requires JACK port name argument"
  84                     sys.exit()
  85                 jack_port = sys.argv[index]
  86                 index += 1
  87
  88                 out = control_iface.map_jack_port_to_alsa(jack_port)
  89                 print "%u:%u ('%s':'%s')" % (int(out[0]), int(out[1]), str(out[2]), str(out[3]))
  90             elif arg == 'ehw':
  91                 print "--- enable export of hardware ports"
  92                 control_iface.set_hw_export(True)
  93             elif arg == 'dhw':
  94                 print "--- disable export of hardware ports"
  95                 control_iface.set_hw_export(False)
  96             else:
  97                 print "Unknown command '%s'" % arg
  98         except dbus.DBusException, e:
  99             print "DBus exception: %s" % str(e)
 100
 101 if __name__ == '__main__':
 102     main()