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.\" Hey, EMACS: -*- nroff -*-
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH jack-dssi-host 1 "September 18th, 2010"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh disable hyphenation
.\" .hy enable hyphenation
.\" .ad l left justify
.\" .ad b justify to both left and right margins
.\" .nf disable filling
.\" .fi enable filling
.\" .br insert line break
.\" .sp <n> insert n+1 empty lines
.\" for manpage-specific macros, see man(7)
.SH NAME
jack-dssi-host \- a simple JACK host for DSSI plugins
.SH SYNOPSIS
.B jack-dssi-host
.I [-v] [-a] [-n] [-p <projdir>] [-c <cname>] [-<i>] <libname>[:<label>] [...]
.SH DESCRIPTION
.B jack-dssi-host
is a simple DSSI host that listens for MIDI events on an ALSA
sequencer port, delivers them to DSSI synth plugins, and outputs
the resulting audio via JACK.
.br
.B jack-dssi-host
can host up to 16 instances of DSSI synth plugins, each of which is
sequentially assigned a MIDI channel from 1 to 16. Plugin outputs
(if `-a' is not specified) are connected sequentially to the
available JACK physical output ports, wrapping back to the first
JACK port whenever the available ports are exhausted. Plugin user
interfaces (UIs) are started for each instance (if '-n' is not specified.)
.B jack-dssi-host
will exit when the last plugin UI has exited.
.br
As a special case, if
.B jack-dssi-host
is started with a name other than `jack-dssi-host', and if that name
(plus an `.so' suffix) can be found in
the DSSI_PATH search path (see
.B ENVIRONMENT
below) as a valid plugin shared library, and if no further command line
arguments are given, then the first plugin in that library will be
loaded automatically. This provides a convenient way to run a plugin
by simply symlinking the plugin's basename to jack-dssi-host.
.br
.SH OPTIONS
.TP
.B -v
Verbose mode.
.TP
.B -a
Disable automatic connection of outputs to JACK physical outputs.
.TP
.B -n
Disable automatic starting of plugin user interfaces (UIs).
.TP
.B -p <projdir>
The project directory to pass to both plugin and UI.
.TP
.B -c <cname>
The client name to use for ALSA and JACK.
.TP
.B -<i>
Number of instances of the following plugin to run (max 16 total,
default 1).
.TP
.B <libname>
Name of the DSSI plugin shared library (.so) to load. This may be an
absolute path to the library file, or just the filename itself, in
which case the DSSI search path is searched (see ENVIRONMENT below).
.TP
.B <label>
the label of the plugin to load from the library. If this is
omitted, the first plugin in the library is used.
.TP
.B [...]
Optionally more instance counts, plugins and labels.
.br
.SH EXAMPLE
.B jack-dssi-host -2 lib1.so -1 lib2.so:fuzzy
.br
Runs two instances of the first plugin found in lib1.so, assigned to MIDI
channels 1 and 2 and connected to the first available JACK outputs, and one
instance of the "fuzzy" plugin in lib2.so on MIDI channel 3 and
connected to the next available JACK output.
.SH ENVIRONMENT
.B jack-dssi-host
will search for plugin shared libraries in the directories specified
by the environment variable
.B DSSI_PATH,
which is a colon-separated list of directories. If
.B DSSI_PATH
is not set, a default search path of /usr/lib/dssi,
/usr/local/lib/dssi, and (assuming the environment variable HOME is
set,) $HOME/.dssi is used.
.br
.SH AUTHOR
This manual page was originally created by Mark Hymers from the help
text of the application, for the Debian project (but may be freely
used by others).

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