143 lines
4 KiB
Turtle
143 lines
4 KiB
Turtle
@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
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@prefix owl: <http://www.w3.org/2002/07/owl#> .
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@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
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@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
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@prefix time: <http://lv2plug.in/ns/ext/time#> .
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@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
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<http://lv2plug.in/ns/ext/time>
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a owl:Ontology ;
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rdfs:seeAlso <time.h> ,
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<lv2-time.doap.ttl> ;
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lv2:documentation """
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<p>This is a vocabulary for precisely describing a position in time and the
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passage of time itself, in both real and musical terms.</p>
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<p>In addition to real time (e.g. seconds), two units of time are used:
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<q>frames</q> and <q>beats</q>. A frame is a numbered quantum of time. Frame
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time is related to real-time by the <q>frame rate</q> or <q>sample rate</q>,
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time:framesPerSecond. A beat is a single pulse of musical time. Beat time is
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related to real-time by the <q>tempo</q>, time:beatsPerMinute.</p>
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<p>Musical time additionally has a <q>meter</q> which describes passage of time
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in terms of musical <q>bars</q>. A bar is a higher level grouping of beats.
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The meter describes how many beats are in one bar.</p>
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""" .
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time:Time
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a rdfs:Class ;
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rdfs:subClassOf time:Position ;
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rdfs:label "Time" ;
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rdfs:comment "A point in time in some unit/dimension." .
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time:Position
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a rdfs:Class ;
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rdfs:label "Position" ;
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lv2:documentation """
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<p>A point in time and/or the speed at which time is passing. A position is
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both a point and a speed, which precisely defines a time within a timeline.</p>
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""" .
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time:Rate
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a rdfs:Class ;
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rdfs:subClassOf time:Position ;
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rdfs:label "Rate" ;
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lv2:documentation """
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<p>The rate of passage of time in terms of one unit with respect to
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another.</p> """ .
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time:position
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a rdf:Property ,
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owl:ObjectProperty ,
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owl:FunctionalProperty ;
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rdfs:range time:Position ;
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rdfs:label "position" .
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time:barBeat
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Time ;
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rdfs:range xsd:float ;
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rdfs:label "beat within bar" ;
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rdfs:comment "The beat number within the bar, from 0 to beatsPerBar." .
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time:bar
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Time ;
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rdfs:range xsd:long ;
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rdfs:label "bar" .
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time:beat
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Time ;
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rdfs:range xsd:double ;
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rdfs:label "beat" ;
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rdfs:comment """
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The global running beat number. This is not the beat within a bar like barBeat,
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but relative to the same origin as time:bar and monotonically increases unless
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the transport is repositioned.
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""" .
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time:beatUnit
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Rate ;
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rdfs:range xsd:nonNegativeInteger ;
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lv2:documentation """
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<p>Beat unit, the note value that counts as one beat. This is the bottom number
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in a time signature: 2 for half note, 4 for quarter note, and so on.</p>
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""" .
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time:beatsPerBar
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Rate ;
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rdfs:range xsd:float ;
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rdfs:label "beats per bar" .
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time:beatsPerMinute
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Rate ;
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rdfs:range xsd:float ;
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rdfs:label "beats per minute" ;
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rdfs:comment "Tempo in beats per minute." .
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time:frame
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Time ;
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rdfs:range xsd:long ;
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rdfs:label "frame" .
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time:framesPerSecond
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Rate ;
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rdfs:range xsd:float ;
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rdfs:label "frames per second" ;
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rdfs:comment "Frame rate in frames per second." .
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time:speed
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a rdf:Property ,
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owl:DatatypeProperty ,
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owl:FunctionalProperty ;
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rdfs:domain time:Rate ;
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rdfs:range xsd:float ;
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rdfs:label "speed" ;
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lv2:documentation """
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<p>The rate of the progress of time as a fraction of normal speed. For
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example, a rate of 0.0 is stopped, 1.0 is rolling at normal speed, 0.5 is
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rolling at half speed, -1.0 is reverse, and so on.
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</p>
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""" .
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