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diff --git a/data/lv2core.lv2/lv2.ttl b/data/lv2core.lv2/lv2.ttl new file mode 100644 index 0000000..c842489 --- /dev/null +++ b/data/lv2core.lv2/lv2.ttl @@ -0,0 +1,616 @@ +# 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" . |