diff -r 2f84ed5f3abf -r d6614ad97bed c++/lv2-demo-modul/amp.ttl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/c++/lv2-demo-modul/amp.ttl	Fri May 15 20:32:37 2020 +0200
@@ -0,0 +1,90 @@
+# The full description of the plugin is in this file, which is linked to from
+# `manifest.ttl`.  This is done so the host only needs to scan the relatively
+# small `manifest.ttl` files to quickly discover all plugins.
+
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix lv2:   <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 units: <http://lv2plug.in/ns/extensions/units#> .
+
+# First the type of the plugin is described.  All plugins must explicitly list
+# `lv2:Plugin` as a type.  A more specific type should also be given, where
+# applicable, so hosts can present a nicer UI for loading plugins.  Note that
+# this URI is the identifier of the plugin, so if it does not match the one in
+# `manifest.ttl`, the host will not discover the plugin data at all.
+<http://lv2plug.in/plugins/eg-amp>
+	a lv2:Plugin ,
+		lv2:AmplifierPlugin ;
+# Plugins are associated with a project, where common information like
+# developers, home page, and so on are described.  This plugin is part of the
+# LV2 project, which has URI <http://lv2plug.in/ns/lv2>, and is described
+# elsewhere.  Typical plugin collections will describe the project in
+# manifest.ttl
+	lv2:project <http://lv2plug.in/ns/lv2> ;
+# Every plugin must have a name, described with the doap:name property.
+# Translations to various languages can be added by putting a language tag
+# after strings as shown.
+	doap:name "Simple Amplifier" ,
+		"简单放大器"@zh ,
+		"Einfacher Verstärker"@de ,
+		"Simple Amplifier"@en-gb ,
+		"Amplificador Simple"@es ,
+		"Amplificateur de Base"@fr ,
+		"Amplificatore Semplice"@it ,
+		"簡単なアンプ"@jp ,
+		"Просто Усилитель"@ru ;
+	doap:license <http://opensource.org/licenses/isc> ;
+	lv2:optionalFeature lv2:hardRTCapable ;
+	lv2:port [
+# Every port must have at least two types, one that specifies direction
+# (lv2:InputPort or lv2:OutputPort), and another to describe the data type.
+# This port is a lv2:ControlPort, which means it contains a single float.
+		a lv2:InputPort ,
+			lv2:ControlPort ;
+		lv2:index 0 ;
+		lv2:symbol "gain" ;
+		lv2:name "Gain" ,
+			"收益"@zh ,
+			"Verstärkung"@de ,
+			"Gain"@en-gb ,
+			"Aumento"@es ,
+			"Gain"@fr ,
+			"Guadagno"@it ,
+			"利益"@jp ,
+			"Увеличение"@ru ;
+# An lv2:ControlPort should always describe its default value, and usually a
+# minimum and maximum value.  Defining a range is not strictly required, but
+# should be done wherever possible to aid host support, particularly for UIs.
+		lv2:default 0.0 ;
+		lv2:minimum -90.0 ;
+		lv2:maximum 24.0 ;
+# Ports can describe units and control detents to allow better UI generation
+# and host automation.
+		units:unit units:db ;
+		lv2:scalePoint [
+			rdfs:label "+5" ;
+			rdf:value 5.0
+		] , [
+			rdfs:label "0" ;
+			rdf:value 0.0
+		] , [
+			rdfs:label "-5" ;
+			rdf:value -5.0
+		] , [
+			rdfs:label "-10" ;
+			rdf:value -10.0
+		]
+	] , [
+		a lv2:AudioPort ,
+			lv2:InputPort ;
+		lv2:index 1 ;
+		lv2:symbol "in" ;
+		lv2:name "In"
+	] , [
+		a lv2:AudioPort ,
+			lv2:OutputPort ;
+		lv2:index 2 ;
+		lv2:symbol "out" ;
+		lv2:name "Out"
+	] .