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# LV2 Parameter Extension
# Copyright (C) 2010 David Robillard <d@drobilla.net>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix param: <http://lv2plug.in/ns/ext/parameter#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
<http://lv2plug.in/ns/ext/parameter>
a lv2:Specification ;
doap:name "LV2 Parameter" ;
doap:shortdesc "Dynamic message-controlled LV2 plugin parameters." ;
doap:maintainer [
a foaf:Person ;
foaf:name "David Robillard" ;
foaf:homepage <http://drobilla.net/> ;
rdfs:seeAlso <http://drobilla.net/drobilla.rdf>
] ;
rdfs:comment """
""" .
param:Parameter a rdfs:Class ; a lv2:Resource ;
rdfs:label "Parameter" ;
lv2:documentation """
<p>A parameter on an LV2 plugin. Parameters can be manipulated to alter
the behaviour or output of a plugin. Unlike lv2:ControlPort:</p>
<ul>
<li>A parameter may have any data type</li>
<li>Parameters can be dynamically added or removed</li>
<li>Parameter values can be manipulated by the plugin</li>
</ul>
<p>Note that plugins are not required to support this potential functionality,
parameters can be used to provide a basic LADSPA-like set of floating point
parameters in a more extensible manner.</p>
<p>Parameters are essentially controls that are not 1:1 associated with ports
(manipulation of parameters can be accomplished by e.g. sending messages
to a command port).</p>
""" .
param:supportsType a rdf:Property ;
rdfs:domain param:Parameter ;
rdfs:range atom:AtomType ;
rdfs:label "supports type" ;
lv2:documentation """
Indicates that a Parameter has values of a particular type. A Parameter
may support many types. Parameter values are always LV2 Atoms as defined
by the <a href="http://lv2plug.in/ns/ext/atom">LV2 Atom</a> Extension
Any type of LV2 Atom may be used as a parameter value.
""" .
param:value a rdf:Property ;
rdfs:domain param:Parameter ;
rdfs:label "value" ;
rdfs:comment """
Indicates that a Parameter has a certain value. A Parameter has at most
one value at any given time. The type of the value specified must be
one of the types specified by param:supportsType. When used in a plugin
data file this property specifies the default value of a parameter.
""" .
param:minimum a rdf:Property ;
rdfs:domain param:Parameter ;
rdfs:label "minimum" ;
rdfs:comment """
Specifies the minimum value of a Parameter (for Parameters with comparable
types for which this makes sense). The type of the minimum must be one of
the types specified by param:supportsType. The host MAY attempt to set a
parameter to any value (of a legal type), i.e. the plugin MUST NOT assume
attempts to change a parameter are within range and SHOULD clamp accordingly.
""" .
param:maximum a rdf:Property ;
rdfs:domain param:Parameter ;
rdfs:label "maximum" ;
rdfs:comment """
Specifies the maximum value of a Parameter (for Parameters with comparable
types for which this makes sense). The type of the maximum must be one of
the types specified by param:supportsType. The host MAY attempt to set a
parameter to any value (of a legal type), i.e. the plugin MUST NOT assume
attempts to change a parameter are within range and SHOULD clamp accordingly.
""" .
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