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aconnect(1)                                                        aconnect(1)



NAME
       aconnect - ALSA sequencer connection manager


SYNOPSIS
       aconnect [-d] [-options] sender receiver
       aconnect -i|-o [-options]
       aconnect -x


DESCRIPTION
       aconnect  is  a utility to connect and disconnect two existing ports on
       ALSA sequencer system.  The ports with the arbitrary subscription  per-
       mission, such as created by aseqview(1), can be connected to any (MIDI)
       device ports using aconnect.  For example, to connect from port 64:0 to
       65:0, run as follows:

           % aconnect 64:0 65:0

       The connection is one-way, and the whole data to the sender port (64:0)
       is redirected to the receiver port (65:0).   When  another  port  (e.g.
       65:1)  is  attached  to  the same sender port, the data is sent to both
       receiver ports.  For disconnection, use -d option.

       % aconnect -d 64:0 65:0

       The address can be given using the client's name.

       % aconnect External:0 Emu8000:1

       Then the port 0 of the client matching with the  string  "External"  is
       connected to the port 1 of the client matching with the "Emu8000".

       Another  function of aconnect is to list the present ports on the given
       condition.  The input ports, which may  become  sender  ports,  can  be
       listed with -i option.

       % aconnect -i
       client 0: 'System' [type=kernel]
           0 'Timer           '
           1 'Announce        '
       client 64: 'External MIDI-0' [type=kernel]
           0 'MIDI 0-0        '

       Similarly, to see the output ports, use -o flag.

       You can remove all existing exported connections using -x option.  This
       function is useful for terminating the ALSA drivers, because  the  mod-
       ules with sequencer connections cannot be unloaded unless their connec-
       tions are removed.


OPTIONS
   CONNECTION MANAGEMENT
       -d, --disconnect
              Disconnect the given subscription.

       -e, --exclusive
              Connect ports with exclusive mode.   Both  sender  and  receiver
              ports can be no longer connected by any other ports.

       -r, --real queue
              Convert time-stamps of event packets to the current value of the
              given real-time queue.  This  is  option  is,  however,  not  so
              useful,  since  the receiver port must use (not necessarily own)
              the specified queue.

       -t, --tick queue
              Like -r option, but time-stamps are  converted  to  the  current
              value of the given tick queue.


   LIST PORTS
       -i, --input
              List  existing input (readable) ports.  This option is exclusive
              to -o.

       -o, --output
              List existing output (writable) ports.  This option is exclusive
              to -i.

       -l, --list
              List  the current connection status.  The connected and connect-
              ing ports from/to each port are  listed  together.   The  suffix
              flag  [ex]  means  the connection is exclusive.  The suffix flag
              [real:#] and [tick:#] mean the connection includes real-time and
              tick conversion on the listed queue, respectively.


   REMOVE ALL CONNECTIONS
       -x, --removeall
              Remove all exported connections.


SEE ALSO
       aseqnet(1), aseqview(1)


AUTHOR
       Takashi Iwai <tiwai@suse.de>



                                August 31, 2000                    aconnect(1)


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This page was generated on Sat Sep 8 16:33:52 GMT 2007

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