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         sys.exit(0)
  26
  27     bus = dbus.SessionBus()
  28
  29     controller = bus.get_object(service_name, "/")
  30     control_iface = dbus.Interface(controller, control_interface_name)
  31
  32     # check arguments
  33     index = 1
  34     while index < len(sys.argv):
  35         arg = sys.argv[index]
  36         index += 1
  37         try:
  38             if arg == "exit":
  39                 print "--- exit"
  40                 control_iface.exit()
  41             elif arg == "start":
  42                 print "--- start"
  43                 control_iface.start()
  44             elif arg == "stop":
  45                 print "--- stop"
  46                 control_iface.stop()
  47             elif arg == "status":
  48                 print "--- status"
  49                 if control_iface.is_started():
  50                     print "Bridging enabled"
  51                 else:
  52                     print "Bridging disabled"
  53             elif arg == "gjcn":
  54                 print "--- get jack client name"
  55                 print control_iface.get_jack_client_name()
  56             elif arg == 'ma2jp':
  57                 print "--- map ALSA to JACK playback port"
  58                 if index + 1 >= len(sys.argv):
  59                     print "map ALSA to JACK playback port command requires ALSA client ID and ALSA port ID arguments"
  60                     sys.exit()
  61                 client_id = sys.argv[index]
  62                 index += 1
  63                 port_id = sys.argv[index]
  64                 index += 1
  65
  66                 print "'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, True)
  67             elif arg == 'ma2jc':
  68                 print "--- map ALSA to JACK capture port"
  69                 if index + 1 >= len(sys.argv):
  70                     print "map ALSA to JACK capture port command requires ALSA client ID and ALSA port ID arguments"
  71                     sys.exit()
  72                 client_id = sys.argv[index]
  73                 index += 1
  74                 port_id = sys.argv[index]
  75                 index += 1
  76
  77                 print "'%s'" % control_iface.map_alsa_to_jack_port(client_id, port_id, False)
  78             elif arg == 'mj2a':
  79                 print "--- map JACK to ALSA port"
  80                 if index >= len(sys.argv):
  81                     print "map JACK to ALSA port command requires JACK port name argument"
  82                     sys.exit()
  83                 jack_port = sys.argv[index]
  84                 index += 1
  85
  86                 out = control_iface.map_jack_port_to_alsa(jack_port)
  87                 print "%u:%u ('%s':'%s')" % (int(out[0]), int(out[1]), str(out[2]), str(out[3]))
  88             else:
  89                 print "Unknown command '%s'" % arg
  90         except dbus.DBusException, e:
  91             print "DBus exception: %s" % str(e)
  92
  93 if __name__ == '__main__':
  94     main()