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jack-plumbing - Online in the Cloud

Run jack-plumbing in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command jack-plumbing that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


jack-plumbing - JACK Plumbing Daemon

SYNOPSIS


jack-plumbing [options] [rule-files]

OPTIONS


-d : Do not operate as a daemon.

-o : Do not load ordinary rule files.

-q : Quiet operation.

-u : Set the time, in micro-seconds, that must elapse after a connection notification to
indicate the end of a notification set (default=30000). This is an optimization switch.

DESCRIPTION


jack-plumbing maintains a set of port connection rules and manages these as clients
register ports with JACK- Port names are implicitly bounded regular expressions and
support sub-expression patterns.

There are four rules: connect, disconnect, also-connect and connect-exclusive.

(connect "SuperCollider:out_(.*)" "system:playback_\1")

This connect rule ensures that whenever scsynth(1) is running any output ports it
registers are connected to appropriate ALSA playback ports. The connect rule only makes a
connection if none already exist.

(also-connect "system:playback_1" "jack-udp-[0-9]*:in_1")

This also-connect rule ensures that when jack-udp(1) is running in send mode all signals
that are ordinarily sent to the local audio interface will also be sent to the network
destination. The also-connect aliasing applies to both the left and right hand side of
connect rules.

(connect-exclusive "SuperCollider:out_(.*)" "ardour:sc3_in_\1/in 1")

This connect-exclusive rule ensures that if SuperCollider and an ardour(1) session with
appropriate tracks are both running that SuperCollider gets connected to ardour and
disconnected from everything else.

This type of connection daemon has the following advantages over both environment
variables and command line arguments:

· it does not require any client connection support or logic at all

· it provides a uniform user interface to all clients

· it has a somewhat declarative style

This type of daemon is very lightweight and non-intrusive: it requires no arguments, it
runs from an unprivileged thread, if the rule set is empty it is a no-op, it does not
write any files, it does not require any modification to clients or to how clients are
started.

When a set of port registrations is made it checks the modification time of the rule set
files, /etc/jack-plumbing and ~/.jack-plumbing, and any files specified by the user,
rereads the rule set if it has been updated, then makes the JACK graph obey the rules.

Any lines beginning with a semi-colon are ignored.

The rule set is sorted, disconnect rules are applied first, then connect rules, then
connect-exclusive rules.

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