@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix doap:  <http://usefulinc.com/ns/doap#> .
@prefix units: <http://lv2plug.in/ns/extensions/units#> .
@prefix mod:   <http://moddevices.com/ns/mod#> .
@prefix state: <http://lv2plug.in/ns/ext/state#> .
@prefix patch: <http://lv2plug.in/ns/ext/patch#> .
@prefix atom:  <http://lv2plug.in/ns/ext/atom#> .
@prefix pipedal_ui: <http://github.com/rerdavies/pipedal/ui#> .
@prefix modgui: <http://moddevices.com/ns/modgui#> .
@prefix epp:   <http://lv2plug.in/ns/ext/port-props#> .
@prefix pg:    <http://lv2plug.in/ns/ext/port-groups#> .
@prefix param: <http://lv2plug.in/ns/ext/parameters#> .
@prefix urid:  <http://lv2plug.in/ns/ext/urid#> .

<http://ourpad.casa/plugins/oplabs-band-channel>
    a lv2:Plugin , lv2:UtilityPlugin ;
    doap:name "OPLabs Band Channel" ;
    doap:license <http://opensource.org/licenses/MIT> ;
    lv2:project <http://ourpad.casa/plugins/oplabs-band-channel> ;
    mod:brand "OPLabs" ;
    mod:label "Band Channel" ;
    mod:model "Band Channel" ;

    # ModGUI for PiPedal
    modgui:gui [
        modgui:resourceDirectory <modgui/> ;
        modgui:iconTemplate <modgui/index.html> ;
        modgui:settingsTemplate <modgui/index.html> ;
    ] ;

    # State extension for save/restore
    lv2:extensionData state:interface ;

    # Required features for state and path mapping
    lv2:requiredFeature urid:map ;
    lv2:optionalFeature state:mapPath ,
                        state:freePath ;

    # Port definitions
    lv2:port

    ## --- CONTROL INPUT PORTS ---

    # Volume: -60 to +6 dB, default 0
    [
        a lv2:InputPort , lv2:ControlPort ;
        lv2:index 0 ;
        lv2:symbol "volume" ;
        lv2:name "Volume" ;
        lv2:default 0.0 ;
        lv2:minimum -60.0 ;
        lv2:maximum 6.0 ;
        units:unit units:db ;
        rdfs:comment "Channel volume in dB"
    ] ,

    # Pan: -1 to +1, default 0 (center)
    [
        a lv2:InputPort , lv2:ControlPort ;
        lv2:index 1 ;
        lv2:symbol "pan" ;
        lv2:name "Pan" ;
        lv2:default 0.0 ;
        lv2:minimum -1.0 ;
        lv2:maximum 1.0 ;
        rdfs:comment "Stereo pan position (-1 full left, +1 full right)"
    ] ,

    # Mute: 0/1 toggled
    [
        a lv2:InputPort , lv2:ControlPort ;
        lv2:index 2 ;
        lv2:symbol "mute" ;
        lv2:name "Mute" ;
        lv2:default 0.0 ;
        lv2:minimum 0.0 ;
        lv2:maximum 1.0 ;
        lv2:portProperty lv2:toggled ;
        lv2:scalePoint [ rdfs:label "Normal" ; rdf:value 0.0 ] ,
                        [ rdfs:label "Muted"  ; rdf:value 1.0 ] ;
        rdfs:comment "Mute channel audio"
    ] ,

    # Solo: 0/1 toggled
    [
        a lv2:InputPort , lv2:ControlPort ;
        lv2:index 3 ;
        lv2:symbol "solo" ;
        lv2:name "Solo" ;
        lv2:default 0.0 ;
        lv2:minimum 0.0 ;
        lv2:maximum 1.0 ;
        lv2:portProperty lv2:toggled ;
        lv2:scalePoint [ rdfs:label "Normal" ; rdf:value 0.0 ] ,
                        [ rdfs:label "Solo"   ; rdf:value 1.0 ] ;
        rdfs:comment "Solo this channel (mutes all others)"
    ] ,

    # Instrument: enumeration
    [
        a lv2:InputPort , lv2:ControlPort ;
        lv2:index 4 ;
        lv2:symbol "instrument" ;
        lv2:name "Instrument" ;
        lv2:default 0.0 ;
        lv2:minimum 0.0 ;
        lv2:maximum 4.0 ;
        lv2:portProperty lv2:enumeration ;
        lv2:scalePoint [ rdfs:label "Guitar" ; rdf:value 0.0 ] ,
                        [ rdfs:label "Bass"   ; rdf:value 1.0 ] ,
                        [ rdfs:label "Keys"   ; rdf:value 2.0 ] ,
                        [ rdfs:label "Vocals" ; rdf:value 3.0 ] ,
                        [ rdfs:label "Backing"; rdf:value 4.0 ] ;
        rdfs:comment "Instrument type for channel strip"
    ] ,

    ## --- CONTROL OUTPUT PORTS (Meters) ---

    # Level L: peak meter, -60 to 0 dB
    [
        a lv2:OutputPort , lv2:ControlPort ;
        lv2:index 5 ;
        lv2:symbol "levelL" ;
        lv2:name "Level L" ;
        lv2:default 0.0 ;
        lv2:minimum -60.0 ;
        lv2:maximum 0.0 ;
        units:unit units:db ;
        lv2:portProperty epp:notOnGUI ;
        rdfs:comment "Left channel peak level in dB"
    ] ,

    # Level R: peak meter, -60 to 0 dB
    [
        a lv2:OutputPort , lv2:ControlPort ;
        lv2:index 6 ;
        lv2:symbol "levelR" ;
        lv2:name "Level R" ;
        lv2:default 0.0 ;
        lv2:minimum -60.0 ;
        lv2:maximum 0.0 ;
        units:unit units:db ;
        lv2:portProperty epp:notOnGUI ;
        rdfs:comment "Right channel peak level in dB"
    ] ,

    ## --- AUDIO PORTS ---

    # Left audio input
    [
        a lv2:AudioPort , lv2:InputPort ;
        lv2:index 7 ;
        lv2:symbol "inL" ;
        lv2:name "In L"
    ] ,

    # Right audio input
    [
        a lv2:AudioPort , lv2:InputPort ;
        lv2:index 8 ;
        lv2:symbol "inR" ;
        lv2:name "In R"
    ] ,

    # Left audio output
    [
        a lv2:AudioPort , lv2:OutputPort ;
        lv2:index 9 ;
        lv2:symbol "outL" ;
        lv2:name "Out L"
    ] ,

    # Right audio output
    [
        a lv2:AudioPort , lv2:OutputPort ;
        lv2:index 10 ;
        lv2:symbol "outR" ;
        lv2:name "Out R"
    ]

    .