@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
@prefix pset: <http://lv2plug.in/ns/ext/presets#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

<http://lv2plug.in/ns/ext/presets>
	a doap:Project ;
	doap:license <http://opensource.org/licenses/isc> ;
	doap:name "LV2 Presets" ;
	doap:shortdesc "Presets for LV2 plugins." ;
	doap:created "2009-00-00" ;
	doap:developer <http://drobilla.net/drobilla#me> ;
	lv2:documentation """

This is a vocabulary for LV2 plugin presets, that is, named sets of control
values and possibly other state.  The structure of a pset:Preset is
deliberately identical to that of an lv2:Plugin, and can be thought of as a
plugin template or overlay.

Presets may be defined in any bundle, including the plugin's bundle, separate
third party preset bundles, or user preset bundles saved by hosts.  Since
preset data tends to be large, it is recommended that plugins describe presets
in a separate file(s) to avoid slowing down hosts.  The `manifest.ttl` of a
bundle containing presets should list them like so:

    :::turtle
    eg:mypreset
        a             pset:Preset ;
        lv2:appliesTo eg:myplugin ;
        rdfs:seeAlso  <mypreset.ttl> .

"""^^lv2:Markdown .

pset:Preset
	lv2:documentation """

The structure of a Preset deliberately mirrors that of a plugin, so existing
predicates can be used to describe any data associated with the preset.  For
example:

    :::turtle
    @prefix eg: <http://example.org/> .

    eg:mypreset
        a pset:Preset ;
        rdfs:label "One louder" ;
        lv2:appliesTo eg:myplugin ;
        lv2:port [
            lv2:symbol "volume1" ;
            pset:value 11.0
        ] , [
            lv2:symbol "volume2" ;
            pset:value 11.0
        ] .

A Preset SHOULD have at least one lv2:appliesTo property.  Each Port on a
Preset MUST have at least a lv2:symbol property and a pset:value property.

Hosts SHOULD save user presets to a bundle in the user-local LV2 directory (for
example `~/.lv2`) with a name like `<Plugin_Name>_<Preset_Name>.preset.lv2`
(for example `LV2_Amp_At_Eleven.preset.lv2`), where names are transformed to be
valid LV2 symbols for maximum compatibility.

"""^^lv2:Markdown .

pset:value
	lv2:documentation """

This property is used in a similar way to lv2:default.

"""^^lv2:Markdown .

pset:preset
	lv2:documentation """

Specifies the preset currently applied to a plugin instance.  This property may
be useful for saving state, or notifying a plugin instance at run-time about a
preset change.

"""^^lv2:Markdown .

