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diff --git a/ingen/LV2Features.hpp b/ingen/LV2Features.hpp
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+/*
+  This file is part of Ingen.
+  Copyright 2007-2016 David Robillard <http://drobilla.net/>
+
+  Ingen is free software: you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free
+  Software Foundation, either version 3 of the License, or any later version.
+
+  Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU Affero General Public License for details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef INGEN_LV2FEATURES_HPP
+#define INGEN_LV2FEATURES_HPP
+
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "ingen/ingen.h"
+#include "ingen/types.hpp"
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+#include "raul/Noncopyable.hpp"
+
+namespace Ingen {
+
+class Node;
+class World;
+
+/** Features for use by LV2 plugins.
+ * @ingroup IngenShared
+ */
+class INGEN_API LV2Features {
+public:
+	LV2Features();
+
+	class Feature {
+	public:
+		virtual ~Feature() = default;
+
+		virtual const char* uri() const = 0;
+
+		virtual SPtr<LV2_Feature> feature(World* world,
+		                                  Node*  block) = 0;
+
+protected:
+		static void free_feature(LV2_Feature* feature);
+	};
+
+	class EmptyFeature : public Feature {
+	public:
+		explicit EmptyFeature(const char* uri) : _uri(uri) {}
+
+		const char* uri() const override { return _uri; }
+
+		SPtr<LV2_Feature> feature(World* world, Node* block) override {
+			return SPtr<LV2_Feature>();
+		}
+
+		const char* _uri;
+	};
+
+	class FeatureArray : public Raul::Noncopyable {
+	public:
+		typedef std::vector< SPtr<LV2_Feature> > FeatureVector;
+
+		explicit FeatureArray(FeatureVector& features);
+
+		~FeatureArray();
+
+		LV2_Feature** array() { return _array; }
+
+	private:
+		FeatureVector _features;
+		LV2_Feature** _array;
+	};
+
+	void add_feature(SPtr<Feature> feature);
+	bool is_supported(const std::string& uri) const;
+
+	SPtr<FeatureArray> lv2_features(World* world,
+	                                Node*  node) const;
+
+private:
+	typedef std::vector< SPtr<Feature> > Features;
+	Features _features;
+};
+
+} // namespace Ingen
+
+#endif // INGEN_LV2FEATURES_HPP