diff options
Diffstat (limited to 'data')
| -rw-r--r-- | data/lv2.ttl | 118 |
1 files changed, 36 insertions, 82 deletions
diff --git a/data/lv2.ttl b/data/lv2.ttl index 6f02475..7c2d06f 100644 --- a/data/lv2.ttl +++ b/data/lv2.ttl @@ -1,7 +1,7 @@ # RDF Schema for LV2 plugins # *** PROVISIONAL *** # -# Revision 2007-02-06 +# *** PROPOSED Revision 2007-02-07 *** # # This document describes the classes and properties that are defined by the # core LV2 specification. See <http://lv2plug.in> for more information. @@ -52,7 +52,7 @@ ] , [ a foaf:Person ; foaf:name "Dave Robillard" ; - rdfs:seeAlso <http://drobilla.net/dave.ttl> + rdfs:seeAlso <http://drobilla.net/drobilla.ttl> ]. @@ -82,74 +82,57 @@ To be used by a host a Plugin must have at least the following properties: :Port a rdfs:Class ; rdfs:label "Port" ; rdfs:comment """ -The class that represents an LV2 port +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 (where object is exactly one of - :ControlRateInputPort, :ControlRateOutputPort, - :AudioRateInputPort, :AudioRateOutputPort) - :dataType + 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). """ . :InputPort a rdfs:Class ; - rdfs:subClassOf :Port . + 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:subClassOf :Port . - -:ControlRatePort a rdfs:Class ; - rdfs:subClassOf :Port . - -:AudioRatePort a rdfs:Class ; - rdfs:subClassOf :Port . - -:ControlRateInputPort a rdfs:Class ; - rdfs:label "Control-rate input port" ; - rdfs:subClassOf :ControlRatePort ; - rdfs:subClassOf :InputPort ; - rdfs:comment """ -Ports of this type will be connected to a pointer to a single value of the type -defined by the :dataType property. - -Plugins will read values from this pointer during their run method. + 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. """ . -:ControlRateOutputPort a rdfs:Class ; - rdfs:label "Control-rate output port" ; - rdfs:subClassOf :ControlRatePort ; - rdfs:subClassOf :OutputPort ; +: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 of the type -defined by the :dataType property. - -Plugins will write values to this pointer during their run method. +Ports of this type will be connected to a pointer to a single value conforming +to the 32bit IEEE-754 floating point specification. """ . -:AudioRateInputPort a rdfs:Class ; - rdfs:label "Audio-rate input port" ; - rdfs:subClassOf :AudioRatePort ; - rdfs:subClassOf :InputPort ; +:AudioPort a rdfs:Class ; + rdfs:label "Audio port" ; + rdfs:subClassOf :Port ; rdfs:comment """ -Ports of this type will be connected to an array of values of length -SampleCount and of the type defined by the :dataType property. - -Plugins will read values from this array during their run method. -""" . - -:AudioRateOutputPort a rdfs:Class ; - rdfs:label "Audio-rate output port" ; - rdfs:subClassOf :AudioRatePort ; - rdfs:subClassOf :OutputPort ; - rdfs:comment """ -Ports of this type will be connected to an array of values of length -SampleCount and of the type defined by the :dataType property. - -Plugins will write values to this array during their run method. -""" . +Ports of this type will be connected to an array of length SampleCount +conforming to the 32bit IEEE-754 floating point specification, +representing an audio waveform (i.e. suitable for speaker playback). """ . @@ -168,24 +151,6 @@ Plugins will write values to this array during their run method. # Mandatory Port RDF:Properties # ################################# -:DataType a rdfs:Class ; - rdfs:comment "A data type that can be stored in an LV2 port." . - -:dataType a rdf:Property ; - rdfs:domain :Port ; - rdfs:range :DataType ; - rdfs:label "Port Data type" ; - rdfs:comment """ -Relates a Port to the data type(s) it can accept. Hosts that do not support -a specified datatype 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 multiple datatypes are specified the plugin must have some way to distinguish -the values (any extension that defines a new data-type which wishes to allow -this must deal with this issue somehow). -""" . - :index a rdf:Property ; rdfs:domain :Port ; rdfs:range xsd:nonNegativeInteger ; @@ -275,17 +240,6 @@ values in the range of :float. -############# -# Data Type # -############# - -:float a :DataType ; - rdfs:label "32-bit floating point" ; - rdfs:comment """ -Value conforming to the 32bit IEEE-754 floating point specification.""". - - - ################### ## Host Features ## ################### |