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ghostess - Online in the Cloud

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

This is the command ghostess 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


ghostess - graphical DSSI plugin host

SYNOPSIS


ghostess [-debug level] [-hostname hostname] [-projdir projdir] [-uuid uuid] [-noauto] [-f
cfgfile] [-n] [-chan c] [-conf k v] [-prog b p] [-port p f] soname[:label] [...]

DESCRIPTION


ghostess is a DSSI host that listens for MIDI events, delivers them to DSSI synth plugins,
and outputs the resulting audio via JACK. ghostess also supports DSSI plugins having
audio inputs (effects), LADSPA plugins, and the use of DSSI-style user interfaces with
LADSPA plugins. ghostess can host up to 32 plugin instances at one time.

Depending on the compile-time configuration, ghostess will receive MIDI events from ALSA,
JACK MIDI, or CoreMIDI. Unless otherwise specified by the -chan option, each plugin
instance is sequentially assigned a MIDI channel, wrapping from 15 (zero-based) back to 0
when necessary. Unless -noauto is specified, plugin inputs and outputs are connected
sequentially to the available JACK physical input and output ports, respectively, wrapping
back to the first port whenever the available ports are exhausted.

At startup, ghostess presents a simple GTK+ user interface. Each plugin instance is
represented in a frame, labeled with the plugin name, and containing a MIDI activity
indicator and a ´UI´ button. Left-clicking the ´UI´ button will start or hide the plugin's
user interface (UI). Right-clicking the ´UI´ button will allowing starting, hiding,
showing, or terminating the plugin's UI.

The ´Save Configuration...´ option of ghostess's ´File´ menu allows saving the current
configuration of all plugins to a file. Basically, the file is just a Bourne shell script
that can be used to recreate the configuration.

ghostess comes with a minimal universal DSSI GUI, ghostess_universal_gui, that can be used
with any DSSI or LADSPA plugin. It does not read RDF files or instantiate the plugin, so
it's not as full-featured as a universal GUI could be, but it does allow for adjusting
DSSI/LADSPA ports, selecting bank and program (for plugins with select_program()), and
sending test notes (for plugins with any of the run_synth() functions). If ghostess cannot
find a UI for a plugin, and the universal GUI is in the PATH, ghostess will launch it.

OPTIONS


The following global options are available:

-debug level
Sets bitfield flags which determine which debugging information is printed. The
default level of 1 shows errors only, 0 shows nothing, and -1 shows everything.
See ghostess.h for details.

-hostname hostname
Sets hostname as the name ghostess uses for itself, for JACK and ALSA clients and
GUI window titles. If a JACK port cannot be created with that name, the PID is
appended.

-projdir projdir
Sets the project directory passed to both plugins and UIs to projdir. The default
is none.

-uuid uuid
Sets uuid as the UUID used for JACK session management. There is probably no reason
to use this outside of a managed session.

-noauto
Disables automatic connection of plugin outputs to JACK physical outputs.

-f cfgfile
Additional configuration will be read from cfgfile, in the same format as command
line options.

For specifying plugin instances, ghostess uses a '[-repetition-count] [options]
soname[:label]' format, which may be repeated for multiple instances. The plugin-specific
options are:

-n Specifies the repitition count, or number of instances, of the following plugin to
create, where n is an integer between 1 (the default) and 32.

-chan c
Sets the initial MIDI channel for the following plugin instance to c. Channels are
numbered 0 to 15. If the repetition count is more than one, instances are given
sequential channels beginning with c and wrapping from 15 to 0. The default is for
all instances' MIDI channels to be sequentially numbered, starting from 0.

-conf k v
Sets configure item key k and value v for the following instance. May be repeated
for multiple keys.

-prog b p
Sets the program change bank b and program p for the following plugin (numbered
from 0).

-port p f
Sets the value of port p to floating point number f for the following plugin. May
be repeated for different ports.

soname The name of the DSSI or LADSPA plugin library to load, including the ´.so´ suffix.
soname 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).

label The label of the DSSI or LADSPA plugin to load from the library soname. If this is
omitted, the first plugin in the library is used.

ENVIRONMENT


ghostess will search for plugin shared libraries in the directories specified by the
environment variable DSSI_PATH, which is a colon-separated list of directories. If
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. Note that while
ghostess may be used to host LADSPA plugins, the environment variable LADSPA_PATH is not
used to search for them.

EXAMPLES


Assuming DSSI_PATH is correctly set, the command:

$ ghostess hexter.so

will start a single instance of the plugin hexter, listening on MIDI channel 0, with its
output connected to the first JACK physical output port.

The command:

$ ghostess -noauto -chan 2 xsynth-dssi.so -chan 2 xsynth-dssi.so

will start two instances of Xsynth-DSSI, both listening on MIDI channel 2, but will not
automatically connect the plugin outputs to JACK output ports.

The command:

$ ghostess -debug -1 -hostname fuzzy -projdir /tmp/proj -2 -conf load
mypatches -prog 0 4 -port 7 0.45 effects.so:fuzz

will start two instances of the ´fuzz´ plugin within the effects.so library, using
/tmp/proj as the project directory, pass configure key ´load´ with value ´mypatches´ to
both instances, set bank 0 and program 4, and set port 7 to 0.45. Assuming it is some sort
of effect, the plugins´ inputs and outputs will be automatically connected to the first
JACK physical inputs and outputs. Full debugging information will be printed, and fuzzy
will be used as the JACK client name.

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