SLV2 0.1.0... maybe.

git-svn-id: http://svn.drobilla.net/lad/slv2@681 a436a847-0d15-0410-975c-d299462d15a1

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-# RDF Schema for LV2 plugins
-# *** PROVISIONAL Revision 2007-08-03 ***
-#
-# This document describes the classes and properties that are defined by the
-# core LV2 specification.  See <http://lv2plug.in> for more information.
-# 
-# Copyright (C) 2006-2007 Steve Harris, Dave Robillard
-# 
-# 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 :     <http://lv2plug.in/ns/lv2core#> .
-@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> .
-@prefix doap: <http://usefulinc.com/ns/doap#> .
-@prefix foaf: <http://xmlns.com/foaf/0.1/> .
-
-:Specification a rdfs:Class ;
-	rdfs:comment """
-An LV2 specification (ie this specification, or an LV2 extension).
-
-Specification data, like plugins, is distributed in standardized
-bundles so hosts may discover all present LV2 data.
-See http://lv2plug.in/docs for more details.
-""" .
-
-<> a doap:Project ;
-   a :Specification ;
-   doap:license <http://usefulinc.com/doap/licenses/mit> ;
-   doap:name "LV2" ;
-   doap:homepage <http://lv2plug.in> ;
-   doap:created "2004-04-21" ;
-   doap:shortdesc "An audio processing plugin specification" ;
-   doap:programming-language "C" ;
-   doap:release [
-       doap:revision "1.0beta4" ;
-       doap:created "2007-08-03"
-   ] ;
-   doap:maintainer [
-       a foaf:Person ;
-       foaf:name "Steve Harris" ;
-       foaf:homepage <http://plugin.org.uk/> ;
-       rdfs:seeAlso <http://plugin.org.uk/swh.xrdf>
-   ] , [
-       a foaf:Person ;
-       foaf:name "Dave Robillard" ;
-       foaf:homepage <http://drobilla.net/> ;
-       rdfs:seeAlso <http://drobilla.net/drobilla.xrdf>
-   ].
-
-
-##################
-## Plugin Class ##
-##################
-
-:Plugin a rdfs:Class ;
-    rdfs:label   "Plugin" ;
-    rdfs:comment """
-The class which represents an LV2 plugin.
-
-To be used by a host a Plugin must have at least the following properties:
-    rdf:type (with object :Plugin)
-    doap:name (one without language tag)
-    doap:license
-    :port
-
-The doap:name property should be at most a few words in length using title
-capitalization, e.g. "Tape Delay Unit".  Use doap:shortdesc or
-doap:description for more detailed descriptions.
-""" .
-
-
-
-##################
-## Port Classes ##
-##################
-
-:Port a rdfs:Class ;
-    rdfs:label   "Port" ;
-    rdfs:comment """
-The class which represents an LV2 port.
-
-In order for it to be used by a host it must have at least 
-the following properties:
-    rdf:type (with object one of :Port, :InputPort, :OutputPort)
-	rdf:type (more specific port class, see below)
-    :index
-    :symbol
-    :name
-
-All LV2 port descriptions MUST have a property rdf:type where the object
-is one of :Port :InputPort or :OutputPort.  Additionally there MUST be
-at least one other rdf:type property which more specifically describes
-type of the port (e.g. :AudioPort).
-
-Hosts that do not support a specific port class MUST NOT instantiate the
-plugin, unless that port has the connectionOptional hint set (in which case
-the host can simply "connect" that port to NULL).  If a host is interested
-in plugins to insert in a certain signal path (e.g. stereo audio), it SHOULD
-consider all the classes of a port to determine which ports are most suitable
-for connection (e.g. by ignoring ports with additional classes the host does
-not recognize).
-""" .
-
-:InputPort a rdfs:Class ;
-    rdfs:label      "Input port" ;
-    rdfs:subClassOf :Port ;
-	rdfs:comment    """
-Ports of this type will be connected to a pointer to some value, which will
-be read by the plugin during their run method.
-""" .
-
-:OutputPort a rdfs:Class ;
-    rdfs:label      "Output port" ;
-    rdfs:subClassOf :Port ;
-	rdfs:comment    """
-Ports of this type will be connected to a pointer to some value, which will
-be written to by the plugin during their run method.
-""" .
-
-:ControlPort a rdfs:Class ;
-    rdfs:label      "Control port" ;
-    rdfs:subClassOf :Port ;
-    rdfs:comment    """
-Ports of this type will be connected to a pointer to a single value conforming
-to the 32bit IEEE-754 floating point specification.
-""" .
-
-:AudioPort a rdfs:Class ;
-    rdfs:label      "Audio port" ;
-    rdfs:subClassOf :Port ;
-    rdfs:comment    """
-Ports of this type will be connected to an array of length SampleCount
-conforming to the 32bit IEEE-754 floating point specification.
-""" .
-
-
-
-##################################
-# Optional Plugin RDF:Properties #
-##################################
-
-:documentation a rdf:Property ;
-    rdfs:domain  :Plugin ;
-    rdfs:label   "documentation" ;
-    rdfs:comment "Relates a Plugin to some text/audio/video documentation either online or included with the plugin package" .
-
-
-
-#################################
-# Mandatory Port RDF:Properties #
-#################################
-
-:index a rdf:Property ;
-    rdfs:domain  :Port ;
-    rdfs:range   xsd:nonNegativeInteger ;
-    rdfs:label   "index" ;
-    rdfs:comment """
-Specifies the index of the port, passed as an argument to the connect port
-function. This number uniqely identifies the port within the plugin.
-
-The plugin author MUST change the plugin URI if a port index is changed.
-""" .
-
-:symbol a rdf:Property ;
-    rdfs:label   "symbol" ;
-    rdfs:comment """
-A short name used as a machine and human readable identifier.
-
-The first character must be one of _, a-z or A-Z and subsequenct characters can
-be from _, a-z, A-Z and 0-9.
-
-A language tag MUST NOT be used on this property.  The plugin author MUST change
-the plugin URI if a port symbol is changed.
-""" .
-
-:name a rdf:Property ;
-    rdfs:domain  :Port ;
-    rdfs:label   "name" ;
-    rdfs:comment """
-A display name for labeling the Port in a user interface.
-
-This property is required for Ports, but MUST NOT be used by the host for
-port identification. The plugin author may change the values of this
-property without changing the Plugin URI.
-""" .
-
-
-
-################################
-# Optional Port RDF:Properties #
-################################
-
-:Point a rdfs:Class ;
-   rdfs:label   "Port value point" ;
-   rdfs:comment """
-Used to describe interesting values in a Port's range.  To be valid it requires
-two rdf:properties, rdfs:label and rdf:value.
-
-There are 3 specially defined Points in the LV2 specification (default,
-minimum, and maximum), though future extensions may define more.
-""" .
-
-:ScalePoint a rdfs:Class ;
-    rdfs:subClassOf :Point ;
-    rdfs:comment "A single :float Point (for control inputs)" .
-
-:scalePoint a rdf:Property ;
-   rdfs:domain  :Port ;
-   rdfs:range   :ScalePoint ;
-   rdfs:label   "Scale point" ;
-   rdfs:comment "Relates a Port to its ScalePoints." .
-
-:default a rdf:Property ;
-    rdfs:subPropertyOf :scalePoint ;
-    rdfs:label         "Default value" ;
-    rdfs:comment """
-The default value that the host SHOULD set this port to when there is no other
-information available.
-""" .
-
-:minimum a rdf:Property ;
-    rdfs:subPropertyOf :scalePoint ;
-    rdfs:label         "Minimum value" ;
-    rdfs:comment """
-A hint to the host for the minimum useful value that the port will use.
-This is a "soft" limit - the plugin is required to gracefully accept all
-values in the range of :float.
-""" .
-
-:maximum a rdf:Property ;
-    rdfs:subPropertyOf :scalePoint ;
-    rdfs:label         "Maximum value" ;
-    rdfs:comment """
-A hint to the host for the maximum useful value that the port will use.
-This is a "soft" limit - the plugin is required to gracefully accept all
-values in the range of :float.
-""" .
-
-
-
-###################
-## Host Features ##
-###################
-
-:HostFeature a rdfs:Class ;
-    rdfs:label   "Host feature" ;
-    rdfs:comment "A host feature which a plugin may use (possibly require).".
-
-:optionalHostFeature a rdf:Property ;
-    rdfs:domain  :Plugin ;
-    rdfs:range   :HostFeature ;
-    rdfs:label   "Optional host feature" ;
-    rdfs:comment """
-Signifies that a plugin is able to make use of a certain host feature.
-The plugin MUST NOT fail to instantiate if an optional host feature is
-not present.""" .
-
-:requiredHostFeature a rdf:Property ;
-    rdfs:domain  :Plugin ;
-    rdfs:range   :HostFeature ;
-    rdfs:label   "Required host feature" ;
-    rdfs:comment """
-Signifies that a plugin requires a certain host feature to function.
-The plugin MUST fail to instantiate if a required host feature is not present;
-hosts SHOULD always check this before attempting to instantiate a plugin
-(eg discovery by attempting to instantiate is strongly discouraged).
-""" .
-
-
-
-####################
-## LV2 Properties ##
-####################
-
-:Property a rdfs:Class ;
-    rdfs:label "Property" ;
-    rdfs:comment """
-An LV2 Property.  A host MUST NOT ignore the presence of a Property
-(eg if it does, something catastrophic will happen and the plugin will not
-function).  If a piece of information can be ignored by the host and the
-plugin can still function correctly, it is NOT a Property, it is a Hint.
-""" .
-    
-:PluginProperty a rdfs:Class ;
-    rdfs:label      "Plugin property" ;
-    rdfs:subClassOf :Property ;
-    rdfs:comment    "Property of a Plugin." .
-
-:PortProperty a rdfs:Class ;
-    rdfs:label      "Port property" ;
-    rdfs:subClassOf :Property ;
-    rdfs:comment    "Property of a Port." .
-
-:pluginProperty a rdf:Property ;
-    rdfs:domain  :Plugin ;
-    rdfs:range   :PluginProperty ;
-    rdfs:label   "Plugin property" ;
-    rdfs:comment "Relates Plugins to PluginProperties." .
-
-:portProperty a rdf:Property ;
-    rdfs:domain  :Port ;
-    rdfs:range   :PortProperty ;
-    rdfs:label   "hint" ;
-    rdfs:comment "Relates Ports to PortProperties." .
-
-
-
-###############
-## LV2 Hints ##
-###############
-
-:Hint a rdfs:Class ;
-    rdfs:label "Hint" ;
-    rdfs:comment """
-An LV2 Hint - a useful piece of information that allows a host to make more
-sensible decisions (eg to provide a better interface).  Unlike a Property
-a Hint may be ignored without catastrophic effects (though this doesn't mean
-a Hint is less "important" than a Property, whether or not it can be safely
-ignored and have the plugin still function correctly is the sole distinction).
-""" .
-
-:PluginHint a rdfs:Class ;
-    rdfs:label      "Plugin hint" ;
-    rdfs:subClassOf :Hint ;
-    rdfs:comment    "Hint for a Plugin." .
-
-:PortHint a rdfs:Class ;
-    rdfs:label      "Port hint" ;
-    rdfs:subClassOf :Hint ;
-    rdfs:comment    "Hint for a Port." .
-
-:pluginHint a rdf:Property ;
-    rdfs:domain  :Plugin ;
-    rdfs:range   :PluginHint ;
-    rdfs:label   "Plugin hint" ;
-    rdfs:comment "Relates Plugins to PluginHints." .
-
-:portHint a rdf:Property ;
-    rdfs:domain  :Port ;
-    rdfs:range   :PortHint ;
-    rdfs:label   "Port hint" ;
-    rdfs:comment "Relates Ports to PortHints." .
-
-
-
-#############################
-# Standard PluginProperties #
-#############################
-
-:isLive a :PluginProperty ;
-    rdfs:label   "Has a live (realtime) dependency" ;
-    rdfs:comment """
-Indicates that the plugin has a real-time dependency (e.g. queues data from a
-socket) and so its output must not be cached or subject to significant latency,
-and calls to the run method should be done in rapid succession.
-""" .
-
-:inPlaceBroken a :PluginProperty ;
-    rdfs:label   "in-place broken" ;
-    rdfs:comment """
-Indicates that the plugin may cease to work correctly if the host elects to use
-the same data location for both input and output.  Plugins that will fail to
-work correctly if ANY input buffer is set to the same location as ANY output
-buffer (with connect_port()) MUST set this property.  Doing so should be
-avoided as enabling this flag makes it impossible for hosts to use the plugin
-to process audio "in-place".
-""" .
-
-
-
-########################
-# Standard PluginHints #
-########################
-
-:hardRTCapable a :PluginHint ;
-    rdfs:label   "Hard realtime capable" ;
-    rdfs:comment """
-Indicates that the plugin is capable of running not only in a conventional host
-but also in a "hard real-time" environment. To qualify for this the plugin must
-satisfy all of the following:
-
-    (1) The plugin must not use malloc(), free() or other heap memory
-    management within its Audio class functions. All new memory used in 
-    Audio class functions must be managed via the stack. These restrictions 
-    only apply to the Audio class functions.
-
-    (2) The plugin will not attempt to make use of any library
-    functions in its Audio class functions, with the exceptions of functions 
-    in the ANSI standard C and C maths libraries, which the host is expected to
-    provide.
-
-    (3) The plugin will not access files, devices, pipes, sockets, IPC
-    or any other mechanism that might result in process or thread
-    blocking within its Audio class functions.
-      
-    (4) The plugin will take an amount of time to execute a run() call 
-    approximately of form (A+B*SampleCount) where A and B depend on the 
-    machine and host in use. This amount of time may not depend on input
-    signals or plugin state. The host is left the responsibility to perform 
-    timings to estimate upper bounds for A and B. The plugin will also take an
-    approximately constant amount of time to execute a connect_port() call.
-""" .
-
-
-
-######################
-# Standard PortHints #
-######################
-
-:connectionOptional a :PortHint ;
-    rdfs:label   "Optionally connected port" ;
-    rdfs:comment """
-Indicates that this port does not have to be connected to valid data by the
-host. If it is to be disconnected then the port MUST set to NULL with a call
-to the connectPort method.
-""" .
-
-:reportsLatency a :PortHint ;
-    rdfs:label   "Latency reporting port" ;
-    rdfs:comment """
-Indicates that the port is used to express the processing latency incurred by
-the plugin, expressed in samples.  The latency may be affected by the current
-sample rate, plugin settings, or other factors, and may be changed by the
-plugin at any time.  Where the latency is frequency dependent the plugin may
-choose any appropriate value.  If a plugin introduces latency it MUST provide
-EXACTLY ONE port with this hint set which informs the host of the "correct" 
-latency.  In "fuzzy" cases the value output should be the most reasonable based
-on user expectation of input/output alignment (eg. musical delay/echo plugins
-should not report their delay as latency, as it is an intentional effect).
-""".
-
-:toggled a :PortHint ;
-   rdfs:label   "Toggled" ;
-   rdfs:comment """
-Indicates that the data item should be considered a Boolean toggle. Data less
-than or equal to zero should be considered "off" or "false", and data above
-zero should be considered "on" or "true".
-""" .
-
-:sampleRate a :PortHint ;
-   rdfs:label   "Sample rate" ;
-   rdfs:comment """
-Indicates that any bounds specified should be interpreted as multiples of the
-sample rate. For instance, a frequency range from 0Hz to the Nyquist frequency
-(half the sample rate) could be requested by this hint in conjunction with
-:minimum 0.0 and :maximum 0.5. Hosts that support bounds at all must support
-this hint to retain meaning.
-""" .
-
-:integer a :PortHint ;
-   rdfs:label   "Integer" ;
-   rdfs:comment """
-Indicates that a port's reasonable values are integers (eg. a user interface
-would likely wish to provide a stepped control allowing only integer input).
-A plugin MUST operate reasonably even if such a port has a non-integer input.
-""" .
-
-
-
-###############################
-# Plugin Categories (Classes) #
-###############################
-
-:UtilityPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Utility" ;
-    rdfs:comment """
-Includes things like mathematical functions and non-musical delays.
-""" .
-
-:GeneratorPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Generator" ;
-    rdfs:comment """
-Any plugin that generates sound internally, rather than processing its input.
-""" .
-
-:InstrumentPlugin a rdfs:Class ;
-    rdfs:subClassOf :GeneratorPlugin ;
-    rdfs:label "Instrument" ;
-    rdfs:comment """
-Any plugin that is intended to be played as a musical instrument.
-""" .
-
-:OscillatorPlugin a rdfs:Class ;
-    rdfs:subClassOf :GeneratorPlugin ;
-    rdfs:label "Oscillator" .
-
-:SimulatorPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Simulator" ;
-    rdfs:comment """
-Plugins that aim to duplicate the effect of some environmental effect or
-musical equipment.
-""" .
-
-:DelayPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Delay" ;
-    rdfs:comment """
-Plugins that intentionally delay their input signal as an effect.
-""" .
-
-:ModulatorPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Modulator" .
-
-:PhaserPlugin a rdfs:Class ;
-    rdfs:subClassOf :ModulatorPlugin ;
-    rdfs:label "Phaser" .
-
-:FlangerPlugin a rdfs:Class ;
-    rdfs:subClassOf :ModulatorPlugin ;
-    rdfs:label "Flanger" .
-
-:ChorusPlugin a rdfs:Class ;
-    rdfs:subClassOf :ModulatorPlugin ;
-    rdfs:label "Chorus" .
-
-:ReverbPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:subClassOf :SimulatorPlugin ;
-    rdfs:subClassOf :DelayPlugin ;
-    rdfs:label "Reverb" .
-
-:FilterPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Filter" .
-
-:LowpassPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Lowpass" .
-
-:BandpassPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Bandpass" .
-
-:HighpassPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Highpass" .
-
-:CombPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Comb" .
-
-:AllpassPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Allpass" .
-
-:EQPlugin a rdfs:Class ;
-    rdfs:subClassOf :FilterPlugin ;
-    rdfs:label "Equaliser" .
-
-:ParaEQPlugin a rdfs:Class ;
-    rdfs:subClassOf :EQPlugin ;
-    rdfs:label "Parametric" .
-
-:MultiEQPlugin a rdfs:Class ;
-    rdfs:subClassOf :EQPlugin ;
-    rdfs:label "Multiband" .
-
-:PitchPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Pitch Shifter" .
-
-:AmplifierPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Amplifier" .
-
-:WaveshaperPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Waveshaper" .
-
-:DistortionPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Distortion" .
-
-:DynamicsPlugin a rdfs:Class ;
-    rdfs:subClassOf :Plugin ;
-    rdfs:label "Dynamics Processor" ;
-    rdfs:comment """
-Plugins that alter the envelope or dynamic range of the processed audio.
-""" .
-
-:CompressorPlugin a rdfs:Class ;
-    rdfs:subClassOf :DynamicsPlugin ;
-    rdfs:label "Compressor" .
-
-:ExpanderPlugin a rdfs:Class ;
-    rdfs:subClassOf :DynamicsPlugin ;
-    rdfs:label "Expander" .
-
-:LimiterPlugin a rdfs:Class ;
-    rdfs:subClassOf :DynamicsPlugin ;
-    rdfs:label "Limiter" .
-
-:GatePlugin a rdfs:Class ;
-    rdfs:subClassOf :DynamicsPlugin ;
-    rdfs:label "Gate" .