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, e:
 115             print "DBus exception: %s" % str(e)
 116
 117 if __name__ == '__main__':
 118     main()