mirror of
https://github.com/alsa-project/alsa-utils
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148 lines
3.3 KiB
Groff
148 lines
3.3 KiB
Groff
.TH aconnect 1 "August 31, 2000"
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.LO 1
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.SH NAME
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aconnect \- ALSA sequencer connection manager
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.SH SYNOPSIS
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.B aconnect
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[\-d] [-options] sender receiver
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.br
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.B aconnect
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\-i|-o [-options]
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.br
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.B aconnect
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\-x
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.SH DESCRIPTION
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.B aconnect
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is a utility to connect and disconnect two existing ports on ALSA sequencer
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system.
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The ports with the arbitrary subscription permission, such as created
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by
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.B aseqview(1),
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can be connected to any (MIDI) device ports using
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.B aconnect.
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For example, to connect from port 64:0 to 65:0, run as follows:
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.IP "" 4
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% aconnect 64:0 65:0
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.PP
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The connection is one-way, and the whole data to the sender port (64:0)
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is redirected to the receiver port (65:0). When another port (e.g. 65:1)
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is attached to the same sender port, the data is sent to both receiver
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ports.
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For disconnection, use
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.B \-d
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option.
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.IP "" 4
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% aconnect -d 64:0 65:0
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.PP
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The address can be given using the client's name.
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.IP "" 4
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% aconnect External:0 Emu8000:1
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.PP
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Then the port 0 of the client matching with the string "External" is
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connected to the port 1 of the client matching with the "Emu8000".
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.PP
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Another function of
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.B aconnect
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is to list the present ports
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on the given condition.
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The input ports, which may become
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.I sender
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ports, can be listed with
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.B \-i
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option.
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.IP "" 4
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% aconnect -i
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.br
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client 0: 'System' [group=system] [type=kernel]
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.in +4
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0 'Timer ' [group=system]
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.br
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1 'Announce ' [group=system]
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.in -4
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client 64: 'External MIDI-0' [group=] [type=kernel]
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.in +4
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0 'MIDI 0-0 ' [group=device]
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.in -4
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.PP
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Similary, to see the output ports, use
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.B \-o
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flag.
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.PP
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You can remove all existing exported connections using
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.B \-x
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option. This function is useful for terminating the ALSA drivers,
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because the modules with sequencer connections cannot be unloaded
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unless their connections are removed.
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.SH OPTIONS
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.SS CONNNECTION MANAGEMENT
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.TP
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.B \-d, --disconnect
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Disconnect the given subscription.
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.TP
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.B \-e, --exclusive
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Connect ports with exclusvie mode.
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Both sender and receiver ports can be no longer connected by any other ports.
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.TP
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.B \-r, --real queue
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Convert time-stamps of event packets to the current value of the given
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.I real-time
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queue.
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This is option is, however, not so useful, since
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the receiver port must use (not necessarily own) the specified queue.
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.TP
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.B \-t, --tick queue
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Like
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.B -r
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option, but
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time-stamps are converted to the current value of the given
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.I tick
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queue.
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.TP
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.B \-g, --group name
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Specify the group name that
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.B aconnect
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uses.
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Some ports may have special permissions, so that only the same group
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may subscribe to them. In such a case,
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.B aconnect
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can fake the group name
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with this option.
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.SS LIST PORTS
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.TP
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.B \-i, --input
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List existing input (readable) ports.
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This option is exclusive to
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.B \-o.
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.TP
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.B \-o, --output
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List existing output (writable) ports.
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This option is exclusive to
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.B \-i.
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.TP
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.B \-l, --list
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List the current connection status. The connected and connecting ports
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from/to each port are listed together.
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The suffix flag
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.B [ex]
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means the connection is exclusive.
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The suffix flag
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.B [real:#]
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and
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.B [tick:#]
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mean the connection includes real-time and tick conversion on the listed
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queue, respectively.
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.SS REMOVE ALL CONNECTIONS
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.TP
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.B \-x, --removeall
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Remove all exported connections.
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.SH "SEE ALSO"
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aseqnet(1), aseqview(1)
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.SH AUTHOR
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Takashi Iwai <tiwai@suse.de>
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