Lay out repository structure to match include and URI structure.

Treat lv2core like all the other specifications in gendoc.py.

179 files changed, 11432 insertions, 0 deletions

diff --git a/ns/ext/atom/atom-buffer.h b/ns/ext/atom/atom-buffer.h
new file mode 100644
index 0000000..f4b90dd
--- /dev/null
+++ b/ns/ext/atom/atom-buffer.h
@@ -0,0 +1,163 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file atom-event-buffer.h Helper functions for atom:EventBuffer.
+
+   Note that these functions are all static inline which basically means:
+   do not take the address of these functions.
+*/
+
+#ifndef LV2_ATOM_EVENT_BUFFER_H
+#define LV2_ATOM_EVENT_BUFFER_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+
+/**
+   Initialize an existing atom buffer.
+   All fields of @c buf are reset, except capacity which is unmodified.
+*/
+static inline void
+lv2_atom_buffer_reset(LV2_Atom_Buffer* buf)
+{
+	buf->event_count = 0;
+	buf->size        = 0;
+}
+
+/**
+   Allocate a new, empty atom buffer.
+*/
+static inline LV2_Atom_Buffer*
+lv2_atom_buffer_new(uint32_t capacity)
+{
+	const uint32_t   size = sizeof(LV2_Atom_Buffer) + capacity;
+	LV2_Atom_Buffer* buf  = (LV2_Atom_Buffer*)malloc(size);
+	if (buf) {
+		buf->data     = (uint8_t*)(buf + 1);
+		buf->capacity = capacity;
+		lv2_atom_buffer_reset(buf);
+	}
+	return buf;
+}
+
+/**
+   Free an atom buffer allocated with lv2_atom_buffer_new().
+*/
+static inline void
+lv2_atom_buffer_free(LV2_Atom_Buffer* buf)
+{
+	free(buf);
+}
+
+/**
+   An iterator over an LV2_Atom_Buffer.
+*/
+typedef struct {
+	LV2_Atom_Buffer* buf;
+	uint32_t         offset;
+} LV2_Atom_Buffer_Iterator;
+
+/**
+   Return an iterator to the beginning of @c buf.
+*/
+static inline LV2_Atom_Buffer_Iterator
+lv2_atom_buffer_begin(LV2_Atom_Buffer* buf)
+{
+	const LV2_Atom_Buffer_Iterator i = { buf, 0 };
+	return i;
+}
+
+/**
+   Return true iff @c i points to a valid atom.
+*/
+static inline bool
+lv2_atom_buffer_is_valid(LV2_Atom_Buffer_Iterator i)
+{
+	return i.offset < i.buf->size;
+}
+
+/**
+   Return the iterator to the next element after @c i.
+   @param i A valid iterator to an atom in a buffer.
+*/
+static inline LV2_Atom_Buffer_Iterator
+lv2_atom_buffer_next(LV2_Atom_Buffer_Iterator i)
+{
+	if (!lv2_atom_buffer_is_valid(i)) {
+		return i;
+	}
+	const LV2_Atom_Event* const ev = (LV2_Atom_Event*)(i.buf->data + i.offset);
+	i.offset += lv2_atom_pad_size(sizeof(LV2_Atom_Event) + ev->body.size);
+	return i;
+}
+
+/**
+   Return a pointer to the atom currently pointed to by @c i.
+*/
+static inline LV2_Atom_Event*
+lv2_atom_buffer_get(LV2_Atom_Buffer_Iterator i)
+{
+	if (!lv2_atom_buffer_is_valid(i)) {
+		return NULL;
+	}
+	return (LV2_Atom_Event*)(i.buf->data + i.offset);
+}
+
+/**
+   Write an atom to a buffer.
+
+   The atom will be written at the location pointed to by @c i, which will be
+   incremented to point to the location where the next atom should be written
+   (which is likely now garbage).  Thus, this function can be called repeatedly
+   with a single @c i to write a sequence of atoms to the buffer.
+
+   @return True if atom was written, otherwise false (buffer is full).
+*/
+static inline bool
+lv2_atom_buffer_write(LV2_Atom_Buffer_Iterator* i,
+                      uint32_t                  frames,
+                      uint32_t                  subframes,
+                      uint32_t                  type,
+                      uint32_t                  size,
+                      const uint8_t*            data)
+{
+	const uint32_t free_space = i->buf->capacity - i->buf->size;
+	if (free_space < sizeof(LV2_Atom_Event) + size) {
+		return false;
+	}
+
+	LV2_Atom_Event* const ev = (LV2_Atom_Event*)(i->buf->data + i->offset);
+
+	ev->frames    = frames;
+	ev->subframes = subframes;
+	ev->body.type = type;
+	ev->body.size = size;
+	memcpy((uint8_t*)ev + sizeof(LV2_Atom_Event), data, size);
+	++i->buf->event_count;
+
+	size          = lv2_atom_pad_size(sizeof(LV2_Atom_Event) + size);
+	i->buf->size += size;
+	i->offset    += size;
+
+	return true;
+}
+
+#endif /* LV2_ATOM_EVENT_BUFFER_H */
diff --git a/ns/ext/atom/atom-helpers.h b/ns/ext/atom/atom-helpers.h
new file mode 100644
index 0000000..4e51c89
--- /dev/null
+++ b/ns/ext/atom/atom-helpers.h
@@ -0,0 +1,174 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file atom-helpers.h Helper functions for the LV2 Atom extension.
+
+   These functions are provided for convenience only, use of them is not
+   required for supporting atoms.
+
+   Note that these functions are all static inline which basically means:
+   do not take the address of these functions.
+*/
+
+#ifndef LV2_ATOM_HELPERS_H
+#define LV2_ATOM_HELPERS_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+
+typedef LV2_Atom_Property* LV2_Thing_Iter;
+
+/** Get an iterator pointing to @c prop in some LV2_Thing */
+static inline LV2_Thing_Iter
+lv2_thing_begin(const LV2_Thing* obj)
+{
+	return (LV2_Thing_Iter)(obj->properties);
+}
+
+/** Return true iff @c iter has reached the end of @c thing */
+static inline bool
+lv2_thing_iter_is_end(const LV2_Thing* obj, LV2_Thing_Iter iter)
+{
+	return (uint8_t*)iter >= ((uint8_t*)obj + sizeof(LV2_Atom) + obj->size);
+}
+
+/** Return true iff @c l points to the same property as @c r */
+static inline bool
+lv2_thing_iter_equals(const LV2_Thing_Iter l, const LV2_Thing_Iter r)
+{
+	return l == r;
+}
+
+/** Return an iterator to the property following @c iter */
+static inline LV2_Thing_Iter
+lv2_thing_iter_next(const LV2_Thing_Iter iter)
+{
+	return (LV2_Thing_Iter)((uint8_t*)iter
+	                        + sizeof(LV2_Atom_Property)
+	                        + lv2_atom_pad_size(iter->value.size));
+}
+
+/** Return the property pointed to by @c iter */
+static inline LV2_Atom_Property*
+lv2_thing_iter_get(LV2_Thing_Iter iter)
+{
+	return (LV2_Atom_Property*)iter;
+}
+
+/**
+   A macro for iterating over all properties of an Thing.
+   @param thing The thing to iterate over
+   @param iter The name of the iterator
+
+   This macro is used similarly to a for loop (which it expands to), e.g.:
+   <pre>
+   LV2_THING_FOREACH(thing, i) {
+   LV2_Atom_Property* prop = lv2_thing_iter_get(i);
+   // Do things with prop here...
+   }
+   </pre>
+*/
+#define LV2_THING_FOREACH(thing, iter)                                  \
+	for (LV2_Thing_Iter (iter) = lv2_thing_begin(thing); \
+	     !lv2_thing_iter_is_end(thing, (iter)); \
+	     (iter) = lv2_thing_iter_next(iter))
+
+/**
+   Append a Property body to an Atom that contains properties (e.g. atom:Thing).
+   @param thing Pointer to the atom that contains the property to add.  thing.size
+   must be valid, but thing.type is ignored.
+   @param key The key of the new property
+   @param value_type The type of the new value
+   @param value_size The size of the new value
+   @param value_body Pointer to the new value's data
+   @return a pointer to the new LV2_Atom_Property in @c body.
+
+   This function will write the property body (not including an LV2_Thing
+   header) at lv2_atom_pad_size(body + size).  Thus, it can be used with any
+   Atom type that contains headerless 32-bit aligned properties.
+*/
+static inline LV2_Atom_Property*
+lv2_thing_append(LV2_Thing* thing,
+                 uint32_t    key,
+                 uint32_t    value_type,
+                 uint32_t    value_size,
+                 const void* value_body)
+{
+	thing->size = lv2_atom_pad_size(thing->size);
+	LV2_Atom_Property* prop = (LV2_Atom_Property*)(
+		(uint8_t*)thing + sizeof(LV2_Atom) + thing->size);
+	prop->key = key;
+	prop->value.type = value_type;
+	prop->value.size = value_size;
+	memcpy(prop->value.body, value_body, value_size);
+	thing->size += sizeof(LV2_Atom_Property) + value_size;
+	return prop;
+}
+
+/** Return true iff @c atom is NULL */
+static inline bool
+lv2_atom_is_null(LV2_Atom* atom)
+{
+	return !atom || (atom->type == 0 && atom->size == 0);
+}
+
+/** A single entry in an Thing query. */
+typedef struct {
+	uint32_t         key;    /**< Key to query (input set by user) */
+	const LV2_Atom** value;  /**< Found value (output set by query function) */
+} LV2_Thing_Query;
+
+static const LV2_Thing_Query LV2_THING_QUERY_END = { 0, NULL };
+
+/**
+   "Query" an thing, getting a pointer to the values for various keys.
+
+   The value pointer of each item in @c query will be set to the location of
+   the corresponding value in @c thing.  Every value pointer in @c query MUST
+   be initialised to NULL.  This function reads @c thing in a single linear
+   sweep.  By allocating @c query on the stack, things can be "queried"
+   quickly without allocating any memory.  This function is realtime safe.
+*/
+static inline int
+lv2_thing_query(const LV2_Thing* thing, LV2_Thing_Query* query)
+{
+	int matches   = 0;
+	int n_queries = 0;
+
+	/* Count number of query keys so we can short-circuit when done */
+	for (LV2_Thing_Query* q = query; q->key; ++q)
+		++n_queries;
+
+	LV2_THING_FOREACH(thing, o) {
+		const LV2_Atom_Property* prop = lv2_thing_iter_get(o);
+		for (LV2_Thing_Query* q = query; q->key; ++q) {
+			if (q->key == prop->key && !*q->value) {
+				*q->value = &prop->value;
+				if (++matches == n_queries)
+					return matches;
+				break;
+			}
+		}
+	}
+	return matches;
+}
+
+#endif /* LV2_ATOM_HELPERS_H */
diff --git a/ns/ext/atom/atom.h b/ns/ext/atom/atom.h
new file mode 100644
index 0000000..39d721c
--- /dev/null
+++ b/ns/ext/atom/atom.h
@@ -0,0 +1,248 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file atom.h C header for the LV2 Atom extension
+   <http://lv2plug.in/ns/ext/atom>.
+
+   This header describes the binary layout of various types defined in the
+   atom extension.
+*/
+
+#ifndef LV2_ATOM_H
+#define LV2_ATOM_H
+
+#define LV2_ATOM_URI "http://lv2plug.in/ns/ext/atom"
+
+#define LV2_ATOM_REFERENCE_TYPE 0
+
+#include <stdint.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   An LV2 Atom.
+
+   An "Atom" is a generic chunk of memory with a given type and size.
+   The type field defines how to interpret an atom.
+
+   All atoms are by definition Plain Old Data (POD) and may be safely copied
+   (e.g. with memcpy) using the size field, except atoms with type 0.  An atom
+   with type 0 is a reference, and may only be used via the functions provided
+   in LV2_Blob_Support (e.g. it MUST NOT be manually copied).
+*/
+typedef struct {
+	uint32_t type;    /**< Type of this atom (mapped URI). */
+	uint32_t size;    /**< Size in bytes, not including type and size. */
+	uint8_t  body[];  /**< Body of length @ref size bytes. */
+} LV2_Atom;
+
+/**
+   An atom:String.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;   /**< Type of this atom (mapped URI). */
+	uint32_t size;   /**< Size in bytes, not including type and size. */
+	uint8_t  str[];  /**< Null-terminated string data in UTF-8 encoding. */
+} LV2_Atom_String;
+
+/**
+   An atom:Literal.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;      /**< Type of this atom (mapped URI). */
+	uint32_t size;      /**< Size in bytes, not including type and size. */
+	uint32_t datatype;  /**< The ID of the datatype of this literal. */
+	uint32_t lang;      /**< The ID of the language of this literal. */
+	uint8_t  str[];     /**< Null-terminated string data in UTF-8 encoding. */
+} LV2_Atom_Literal;
+
+/**
+   An atom:URID or atom:BlankID.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;  /**< Type of this atom (mapped URI). */
+	uint32_t size;  /**< Size in bytes, not including type and size. */
+	uint32_t id;    /**< URID (integer mapped URI) or blank node ID. */
+} LV2_Atom_ID;
+
+/**
+   An atom:Vector.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;        /**< Type of this atom (mapped URI). */
+	uint32_t size;        /**< Size in bytes, not including type and size. */
+	uint32_t elem_count;  /**< The number of elements in the vector */
+	uint32_t elem_type;   /**< The type of each element in the vector */
+	uint8_t  elems[];     /**< Sequence of element bodies */
+} LV2_Atom_Vector;
+
+/**
+   The body of an atom:Property.
+   Note this type is not an LV2_Atom.
+*/
+typedef struct _LV2_Atom_Property {
+	uint32_t key;    /**< Key (predicate) (mapped URI). */
+	LV2_Atom value;  /**< Value (object) */
+} LV2_Atom_Property;
+
+/**
+   An atom:Thing (Resource, Blank, or Message).
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;          /**< Type of this atom (mapped URI). */
+	uint32_t size;          /**< Size in bytes, not including type and size. */
+	uint32_t context;       /**< ID of context graph, or 0 for default */
+	uint32_t id;            /**< URID (for Resource) or blank ID (for Blank) */
+	uint8_t  properties[];  /**< Sequence of LV2_Atom_Property */
+} LV2_Thing;
+
+/**
+   An atom:Event, a timestamped Atom.
+   Note this type is not an LV2_Atom, but contains an Atom as payload.
+*/
+typedef struct {
+	uint32_t frames;     /**< Time in frames relative to this block. */
+	uint32_t subframes;  /**< Fractional time in 1/(2^32)ths of a frame. */
+	LV2_Atom body;       /**< Event body. */
+} LV2_Atom_Event;
+
+/**
+   An atom:Int32, a signed 32-bit integer.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;
+	uint32_t size;
+	int32_t  value;
+} LV2_Atom_Int32;
+
+/**
+   An atom:Int64, a signed 64-bit integer.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;
+	uint32_t size;
+	int64_t value;
+} LV2_Atom_Int64;
+
+/**
+   An atom:Float, a 32-bit IEEE-754 floating point number.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;
+	uint32_t size;
+	float    value;
+} LV2_Atom_Float;
+
+/**
+   An atom:Double, a 64-bit IEEE-754 floating point number.
+   This type may safely be cast to LV2_Atom.
+*/
+typedef struct {
+	uint32_t type;
+	uint32_t size;
+	double   value;
+} LV2_Atom_Double;
+
+/**
+   A buffer of events (the contents of an atom:EventPort).
+
+   The host MAY elect to allocate buffers as a single chunk of POD by using
+   this struct as a header much like LV2_Atom, or it may choose to point to
+   a fragment of a buffer elsewhere.  In either case, @ref data points to the
+   start of the data contained in this buffer.
+
+   The buffer at @ref data contains a sequence of LV2_Atom_Event padded such
+   that the start of each event is aligned to 64 bits, e.g.:
+   <pre>
+   | Event 1 (size 6)                              | Event 2
+   |       |       |       |       |       |       |       |       |
+   | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+   |FRAMES |SUBFRMS|TYPE   |SIZE   |DATADATADATAPAD|FRAMES |SUBFRMS|...
+   </pre>
+*/
+typedef struct {
+
+	/**
+	   The contents of the event buffer. This may or may not reside in the
+	   same block of memory as this header, plugins must not assume either.
+	   The host guarantees this points to at least capacity bytes of allocated
+	   memory (though only size bytes of that are valid events).
+	*/
+	uint8_t* data;
+
+	/**
+	   The number of events in this buffer.
+
+	   INPUTS: The host must set this field to the number of events contained
+	   in the data buffer before calling run(). The plugin must not change
+	   this field.
+
+	   OUTPUTS: The plugin must set this field to the number of events it has
+	   written to the buffer before returning from run(). Any initial value
+	   should be ignored by the plugin.
+	*/
+	uint32_t event_count;
+
+	/**
+	   The capacity of the data buffer in bytes.
+	   This is set by the host and must not be changed by the plugin.
+	   The host is allowed to change this between run() calls.
+	*/
+	uint32_t capacity;
+
+	/**
+	   The size of the initial portion of the data buffer containing data.
+
+	   INPUTS: The host must set this field to the number of bytes used
+	   by all events it has written to the buffer (including headers)
+	   before calling the plugin's run().
+	   The plugin must not change this field.
+
+	   OUTPUTS: The plugin must set this field to the number of bytes
+	   used by all events it has written to the buffer (including headers)
+	   before returning from run().
+	   Any initial value should be ignored by the plugin.
+	*/
+	uint32_t size;
+
+} LV2_Atom_Buffer;
+
+/**
+   Pad a size to 64 bits.
+*/
+static inline uint32_t
+lv2_atom_pad_size(uint32_t size)
+{
+	return (size + 7) & (~7);
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* LV2_ATOM_H */
diff --git a/ns/ext/atom/atom.ttl b/ns/ext/atom/atom.ttl
new file mode 100644
index 0000000..0ef3b34
--- /dev/null
+++ b/ns/ext/atom/atom.ttl
@@ -0,0 +1,436 @@
+# LV2 Atom Extension
+# Copyright 2007-2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@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 xsd: <http://www.w3.org/2001/XMLSchema#> .
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+
+<http://lv2plug.in/ns/ext/atom>
+	a lv2:Specification ;
+	doap:name "LV2 Atom" ;
+	doap:shortdesc "A generic value container and several data types." ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	rdfs:seeAlso <atom-buffer.h> ;
+	doap:release [
+		doap:revision "0.2" ;
+		doap:created "2011-11-05"
+	] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This extension defines a generic format for a typed piece of data, called an
+lv2:Atom (e.g. integers, strings, buffers, data structures,
+etc).  Atoms allow LV2 plugins and hosts to communicate, process, serialise,
+and store values of any type via a generic mechanism (e.g. LV2 ports, events,
+disk, shared memory, network).  Atoms are, with one exception, Plain
+Old Data (POD) and may be safely copied (e.g. with a simple call to
+<code>memcpy</code>).</p>
+
+<p>Since Atom communication can be implemented generically, plugins that
+understand some type can be used together in a host that does not understand
+that type, and plugins (e.g. routers, delays) can process atoms of unknown
+type.</p>
+
+<p>An Atom can be trivially constructed in-place from an
+<a href="http://lv2plug.in/ns/ext/event#Event">Event</a> as defined by the
+<a href="http://lv2plug.in/ns/ext/event">LV2 Event</a> extension.  In other
+words, an Event is simply an Atom with a time stamp header.  Atoms SHOULD
+be used anywhere a "value" needs to be stored or communicated, to allow
+implementations to be polymorphic and extensible.</p>
+
+<p>Atoms (the start of the LV2_Atom header) MUST be 32-bit aligned.</p>
+
+<p>Atoms can be communicated in many ways.  Since an Atom is the payload of an
+Event, an <a href="http://lv2plug.in/ns/ext/event#EventPort">EventPort</a> can
+be used for communicating Atoms in realtime with sub-sample time stamp
+accuracy.  This extension also defines two port types for connecting directly
+to a single Atom: atom:ValuePort and atom:MessagePort, which both have the same
+buffer format but different semantics (with respect to how the run() callback
+interprets the Atom).</p>
+
+<p>Implementing this extension requires a facility for mapping URIs to
+integers, such as the <a href="http://lv2plug.in/ns/ext/urid">LV2 URID</a>
+extension.</p>
+""" .
+
+atom:Atom
+	a rdfs:Class ;
+	rdfs:label "Atom" ;
+	atom:cType "LV2_Atom" ;
+	lv2:documentation """
+<p>Abstract base class for all atoms.  An LV2_Atom has a 32-bit
+<code>type</code> and <code>size</code> followed by a <code>body</code> of
+<code>size</code> bytes.</p>
+
+<p>All concrete Atom types (subclasses of this class) MUST define a precise
+binary layout for <code>body</code>.</p>
+
+<p>The <code>type</code> field is the URI of a subclass of Atom mapped to an
+integer using the <a href="http://lv2plug.in/ns/ext/uri-map">URI Map</a>
+extension's LV2_URI_Map_Feature::uri_to_id() with
+<code>map = "http://lv2plug.in/ns/ext/event"</code>.  If a plugin or host
+does not understand <code>type</code>, that atom SHOULD be gracefully ignored
+(or copied if it does not have type 0).</p>
+
+<p>All atoms are POD by definition except references, which as a special case
+have <code>type = 0</code>.  An Atom MUST NOT contain a Reference.  It is safe
+to copy any non-reference Atom with a simple <code>memcpy</code>, even if the
+implementation does not understand <code>type</code>.  Though this extension reserves
+the type 0 for references, actual specification of how references are used is left
+to another extension.</p>
+""" .
+
+atom:String
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "String" ;
+	atom:cType "LV2_Atom_String" ;
+	lv2:documentation """
+<p>A UTF-8 encoded string.</p>
+
+<p>The body of an LV2_Atom_String is a C string in UTF-8 encoding, i.e. an
+array of bytes (<code>uint8_t</code>) terminated with a NULL byte
+(<code>'\\0'</code>).</p>
+
+<p>This type can be used for free-form strings, but in most cases it is better to
+use atom:Literal since this supports a language tag or datatype.  Implementations
+SHOULD NOT use atom:String unless translating the string does not make sense and
+the string has no meaningful datatype.</p>
+""" .
+
+atom:Literal
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "String Literal" ;
+	atom:cType "LV2_Atom_Literal" ;
+	lv2:documentation """
+<p>A UTF-8 encoded string literal, with an optional datatype or language.</p>
+
+<p>This type is compatible with rdf:Literal and is capable of expressing a
+string in any language, or a value of any type.  A Literal has a
+<code>datatype</code> and <code>lang</code> followed by string data in UTF-8
+encoding.  The length of the string data in bytes is <code>size -
+sizeof(LV2_Atom_Literal)</code>, including the terminating NULL character.  The
+<code>lang</code> field SHOULD be a URI of the form
+&lt;http://lexvo.org/id/term/LANG&gt; where LANG is an <a
+href="http://www.loc.gov/standards/iso639-2/">ISO 693-2</a> or <a
+href="http://www.loc.gov/standards/iso639-2/">ISO 693-3</a> language code.</p>
+
+<p>For compatibility, a Literal MUST have either a <code>datatype</code>
+or a <code>lang</code>, but never both.</p>
+
+<p>For example, a Literal can be "Hello" in English:</p>
+<pre class="c-code">
+void set_to_hello_in_english(LV2_Atom_Literal* lit) {
+     lit->type     = map(expand("atom:Literal"));
+     lit->size     = 14;
+     lit->datatype = 0;
+     lit->lang     = map("http://lexvo.org/id/term/en");
+     memcpy(lit->str, "Hello", sizeof("Hello"));  // Assumes enough space
+}
+</pre>
+
+<p>or a Turtle string:</p>
+<pre class="c-code">
+void set_to_turtle_string(LV2_Atom_Literal* lit, const char* ttl) {
+     lit->type     = map(expand("atom:Literal"));
+     lit->size     = 64;
+     lit->datatype = map("http://www.w3.org/2008/turtle#turtle");
+     lit->lang     = 0;
+     memcpy(lit->str, ttl, strlen(ttl) + 1);  // Assumes enough space
+}
+</pre>
+""" .
+
+atom:URID
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Integer ID mapped from a URI" ;
+	atom:cType "LV2_Atom_ID" ;
+	lv2:documentation """
+<p>An unsigned 32-bit integer mapped from a URI using the <a
+href="http://lv2plug.in/ns/ext/uri-map">URI Map</a> extension's
+LV2_URI_Map_Feature::uri_to_id() with <code>map = NULL</code>.</p>
+""" .
+
+atom:BlankID
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Integer ID for a blank node" ;
+	atom:cType "LV2_Atom_ID" ;
+	lv2:documentation """
+<p>An unsigned 32-bit integer identifier for a blank node.  A BlankID is only
+meaningful within a limited scope (e.g. the Atom in which it appears), and
+MUST NOT be used as a global identifier.  In particular, a BlankID is NOT a
+URID, and can not be mapped to/from a URI.</p>
+""" .
+
+atom:Vector
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Vector" ;
+	atom:cType "LV2_Atom_Vector" ;
+	lv2:documentation """
+<p>A homogeneous sequence of atoms with equivalent type and size.</p>
+
+<p>An LV2_Atom_Vector is a 32-bit <code>elem_count</code> and
+<code>elem_type</code> followed by <code>elem_count</code> atom bodies of type
+<code>elem_type</code>.  The element type must be a fixed size atom:Atom type,
+i.e. the size of each element is the vector's <code>size /
+elem_count</code>.</p>
+
+<p>For example, an atom:Vector containing 42 elements of type atom:Float:</p>
+<pre class="c-code">
+struct VectorOf42Floats {
+    uint32_t type;        // map(expand("atom:Vector"))
+    uint32_t size;        // sizeof(LV2_Atom_Vector) + (42 * sizeof(float);
+    uint32_t elem_count;  // 42
+    uint32_t elem_type;   // map(expand("atom:Float"))
+    float    elems[32];
+};
+</pre>
+
+<p>Note that it is possible to construct a valid Atom for each element
+of the vector, even by an implementation which does not understand
+<code>elem_type</code>.</p>
+""" .
+
+atom:Tuple
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Tuple" ;
+	lv2:documentation """
+<p>A sequence of lv2:Atom with varying <code>type</code>
+and <code>size</code>.</p>
+
+<p>The body of a Tuple is simply a sequence of complete atoms, each aligned to
+32 bits.</p>
+""" .
+
+atom:Thing
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Thing" ;
+	atom:cType "LV2_Thing" ;
+	lv2:documentation """
+<p>Abstract base class for a "Thing", i.e. an atom:Atom with a
+number of <a href="#Property">properties</a>.  An LV2_Object is an unsigned
+32-bit integer <code>context</code> and <code>id</code> followed by a sequence
+of LV2_Atom_Property .</p>
+
+<p>The <code>context</code> is mapped using the <a
+href="http://lv2plug.in/ns/ext/uri-map">URI Map</a> extension's
+LV2_URI_Map_Feature::uri_to_id() with <code>map = NULL</code>, and may be 0
+(the default context).</p>
+
+<p>Note this is an abstract class, i.e. no Atom can exist with <code>type =
+uri_to_id(atom:Thing)</code>.  An Object is either an atom:Resource or an
+atom:Blank, but the <code>body</code> always has the same binary format,
+LV2_Object.  Thus, both named and anonymous objects can be handled with common
+code using only a 64-bit header for both.</p>
+""" .
+
+atom:Resource
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Thing ;
+	atom:cType "LV2_Thing" ;
+	lv2:documentation """
+<p>An atom:Thing where <code>id</code> is the URI of the resource mapped to an
+atom:URID.</p>
+""" .
+
+atom:Blank
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Thing ;
+	atom:cType "LV2_Thing" ;
+	lv2:documentation """
+<p>An atom:Thing where <code>id</code> is the blank node ID of the object,
+which is only meaningful within a certain limited scope (e.g. the container of
+the Blank) and MUST NOT be used as a global ID.  In particular, <code>id</code>
+is NOT an <a href="ID">ID</a>.</p>
+""" .
+
+atom:Message
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Thing ;
+	atom:cType "LV2_Thing" ;
+	lv2:documentation """
+<p>A atom:Thing where <code>id</code> is a message type ID.  Conceptually, a
+Message is identical to a Blank, but is a distinct type with a single type
+field to allow simple and fast dispatch by handling code.</p>
+
+<p>A Message may be serialised as a Blank by adding an rdf:type property with
+the value <code>id</code> unmapped to a URI.</p>
+""" .
+
+atom:Event
+	a rdfs:Class ;
+	rdfs:label "Event" ;
+	atom:cType "LV2_Atom_Event" ;
+	lv2:documentation """
+<p>An atom with a time stamp header prepended, typically for sample accurate
+transmission via LV2 ports.  See struct LV2_Atom_Event.</p>
+""" .
+
+atom:Bang
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Bang (activity) (size = 0)" .
+
+atom:Number
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "Number (abstract class)." .
+
+atom:Int32
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Number ;
+	rdfs:label "Signed 32-bit integer" ;
+	atom:cType "LV2_Atom_Int32" .
+
+atom:Int64
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Number ;
+	rdfs:label "Signed 64-bit integer" ;
+	atom:cType "LV2_Atom_Int64" .
+
+atom:Bool
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label "An atom:Int32 where 0 is false and all other values true" ;
+	atom:cType "LV2_Atom_Int32" .
+
+atom:Float
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Number ;
+	rdfs:label "32-bit IEEE-754 floating point number" ;
+	atom:cType "LV2_Atom_Float" .
+
+atom:Double
+	a rdfs:Class ;
+	rdfs:subClassOf atom:Number ;
+	rdfs:label "64-bit IEEE-754 floating point number" ;
+	atom:cType "LV2_Atom_Double" .
+
+atom:blobSupport
+	a lv2:Feature ;
+	rdfs:label "Blob support" ;
+	lv2:documentation """
+<p>Support for dynamically allocated blobs.  If a host supports this feature,
+it MUST pass a LV2_Feature with <code>URI</code>
+http://lv2plug.in/ns/ext/atom#blobSupport and <code>data</code> pointing to a
+LV2_Blob_Support.</p>
+""" .
+
+atom:AtomPort
+	a rdfs:Class ;
+	rdfs:subClassOf lv2:Port ;
+	rdfs:label "Atom Port" ;
+	lv2:documentation """
+<p>A port which contains an lv2:Atom.  Ports of this type will
+be connected to a 32-bit aligned LV2_Atom immediately followed by
+<code>size</code> bytes of data.</p>
+
+<p>This is an abstract port type, i.e. a port MUST NOT only be an AtomPort,
+but must be a more descriptive type that is a subclass of AtomPort which
+defines the port's semantics (typically atom:ValuePort or atom:MessagePort).
+</p>
+
+<p>Before calling a method on the plugin that writes to an AtomPort output,
+the host MUST set the size of the Atom in that output to the amount of
+available memory immediately following the Atom header.  The plugin MUST
+write a valid Atom to that port (leaving it untouched is illegal).  If there
+is no reasonable value to write to the port, the plugin MUST write NULL
+(the Atom with both <code>type = 0</code> and <code>size = 0</code>).</p>
+""" .
+
+atom:ValuePort
+	a rdfs:Class ;
+	rdfs:subClassOf atom:AtomPort ;
+	rdfs:label "Value Port" ;
+	lv2:documentation """
+<p>An AtomPort that interprets its data as a persistent and time-independent
+"value".</p>
+<ul>
+<li>If a plugin has fixed input values for all ports, all ValuePort outputs
+are also fixed regardless of the number of times the plugin is run.</li>
+<li>If a plugin has fixed input values for all ports except a ValuePort,
+each value V of that ValuePort corresponds to a single set of outputs
+for all ports.</li>
+<li>If a ValuePort contains a reference then the blob it refers to is
+constant; plugin MUST NOT modify the blob in any way.</li>
+</ul>
+<p>Value ports can be thought of as purely functional ports: if a plugin
+callback has only value ports, then the plugin callback is a pure function.</p>
+""" .
+
+atom:MessagePort
+	a rdfs:Class ;
+	rdfs:subClassOf atom:AtomPort ;
+	rdfs:label "Message Port" ;
+	rdfs:comment """
+An AtomPort that "receives", "consumes", "executes", or "sends" its value.
+The Atom contained in a MessagePort is considered transient and/or
+time-dependent, and is only valid for a single run invocation.  Unlike a
+ValuePort, a MessagePort may be used to manipulate internal plugin state.
+
+Intuitively, a MessagePort contains a "message" or "command" or "event"
+which is reacted to, NOT a "value" or "signal" (which is computed with).
+""" .
+
+atom:cType
+	a rdf:Property ,
+		owl:DatatypeProperty ;
+	rdfs:label "C type" ;
+	rdfs:domain rdfs:Class ;
+	rdfs:range xsd:string ;
+	rdfs:comment """
+The identifier for a C type describing the in-memory representation of
+an instance of this class.
+""" .
+
+atom:EventPort
+	a rdfs:Class ;
+	rdfs:label "Event port" ;
+	rdfs:subClassOf lv2:Port ;
+	lv2:documentation """
+<p>A port used for communicating time-stamped atoms in the audio context.
+Ports of this type are connected to an LV2_Atom_Buffer, which contains a flat
+time-stamped sequence of atom:Event.</p>
+
+<p>This port type is intended as a simpler and atom compatible successor to <a
+href="http://lv2plug.in/ns/ext/event#EventPort">ev:EventPort</a>.</p>
+""" .
+
+atom:supports
+	a rdf:Property ;
+	rdfs:domain lv2:Port ;
+	rdfs:range atom:Atom ;
+	rdfs:label "supports" ;
+	lv2:documentation """
+<p>Indicates that a Port supports a certain atom:Atom type.  This is distinct from
+the port type - e.g. the port type ValuePort can hold atoms with many different
+types.  This property is used to describe which Atom types a Port expects to
+receive or send.</p>
+""" .
diff --git a/ns/ext/atom/ext.pc.in b/ns/ext/atom/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/atom/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/atom/forge.h b/ns/ext/atom/forge.h
new file mode 100644
index 0000000..e8f5d40
--- /dev/null
+++ b/ns/ext/atom/forge.h
@@ -0,0 +1,75 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file forge.h Helper constructor functions for LV2 atoms.
+*/
+
+#ifndef LV2_ATOM_FORGE_H
+#define LV2_ATOM_FORGE_H
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	uint32_t ID;
+	uint32_t Message;
+	uint32_t Property;
+} LV2_Atom_Forge;
+
+static inline LV2_Atom_Forge*
+lv2_atom_forge_new(LV2_URID_Map* map)
+{
+	LV2_Atom_Forge* forge = (LV2_Atom_Forge*)malloc(sizeof(LV2_Atom_Forge));
+	forge->ID       = map->map(map->handle, LV2_ATOM_URI "#ID");
+	forge->Message  = map->map(map->handle, LV2_ATOM_URI "#Message");
+	forge->Property = map->map(map->handle, LV2_ATOM_URI "#Property");
+	return forge;
+}
+
+static inline void
+lv2_atom_forge_free(LV2_Atom_Forge* forge)
+{
+	free(forge);
+}
+
+static inline LV2_Atom_ID
+lv2_atom_forge_make_id(LV2_Atom_Forge* forge, uint32_t id)
+{
+	const LV2_Atom_ID atom = { forge->ID, sizeof(uint32_t), id };
+	return atom;
+}
+
+static inline void
+lv2_atom_forge_set_message(LV2_Atom_Forge* forge,
+                           LV2_Thing*      msg,
+                           uint32_t        id)
+{
+	msg->type    = forge->Message;
+	msg->size    = sizeof(LV2_Thing) - sizeof(LV2_Atom);
+	msg->context = 0;
+	msg->id      = id;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* LV2_ATOM_FORGE_H */
diff --git a/ns/ext/atom/manifest.ttl b/ns/ext/atom/manifest.ttl
new file mode 100644
index 0000000..adb10e5
--- /dev/null
+++ b/ns/ext/atom/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/atom>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <atom.ttl> .
+
diff --git a/ns/ext/atom/waf b/ns/ext/atom/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/atom/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/atom/wscript b/ns/ext/atom/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/atom/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/contexts/contexts.h b/ns/ext/contexts/contexts.h
new file mode 100644
index 0000000..f49b474
--- /dev/null
+++ b/ns/ext/contexts/contexts.h
@@ -0,0 +1,82 @@
+/* LV2 Contexts Extension
+ * Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This header 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 General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/** @file
+ * C header for the LV2 Contexts extension
+ * <http://lv2plug.in/ns/ext/contexts>.
+ */
+
+#ifndef LV2_CONTEXTS_H
+#define LV2_CONTEXTS_H
+
+#include <stdint.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define LV2_CONTEXTS_URI "http://lv2plug.in/ns/ext/contexts"
+
+static inline void
+lv2_contexts_set_port_valid(void* flags, uint32_t index) {
+	((uint8_t*)flags)[index / 8] |= 1 << (index % 8);
+}
+
+static inline void
+lv2_contexts_unset_port_valid(void* flags, uint32_t index) {
+	((uint8_t*)flags)[index / 8] &= ~(1 << (index % 8));
+}
+
+static inline int
+lv2_contexts_port_is_valid(const void* flags, uint32_t index) {
+	return (((uint8_t*)flags)[index / 8] & (1 << (index % 8))) != 0;
+}
+
+typedef struct {
+
+	/** The message run function.  This is called once to process a set of
+	 * inputs and produce a set of outputs.
+	 *
+	 * Before calling the host MUST set valid_inputs such that the bit
+	 * corresponding to each input port is 1 iff data is present. The plugin
+	 * MUST only inspect bits corresponding to ports in the message thread.
+	 *
+	 * Similarly, before returning the plugin MUST set valid_outputs such that
+	 * the bit corresponding to each output port of the message context is 1
+	 * iff the value at that port has changed.
+	 * The plugin must return 1 if outputs have been written, 0 otherwise.
+	 */
+	uint32_t (*run)(LV2_Handle  instance,
+	                const void* valid_inputs,
+	                void*       valid_outputs);
+
+} LV2_Contexts_MessageContext;
+
+typedef void* LV2_Contexts_Request_Run_Data;
+
+typedef struct {
+
+	/** Pointer to opaque host data (to be passed to request_run) */
+	LV2_Contexts_Request_Run_Data data;
+
+	/** Request the host execute the context with the given URI */
+	void (*request_run)(LV2_Contexts_Request_Run_Data host_handle,
+	                    uint32_t                      context_uri);
+
+} LV2_Contexts_Request_Run_Feature;
+
+#endif /* LV2_CONTEXTS_H */
+
diff --git a/ns/ext/contexts/contexts.ttl b/ns/ext/contexts/contexts.ttl
new file mode 100644
index 0000000..c56c649
--- /dev/null
+++ b/ns/ext/contexts/contexts.ttl
@@ -0,0 +1,134 @@
+# LV2 Contexts Extension
+#
+# Allows for an LV2 plugin to have several independent contexts, each with its
+# own run callback and associated ports.
+#
+# Copyright (C) 2007-2010 David Robillard
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix ctx:  <http://lv2plug.in/ns/ext/contexts#> .
+@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 xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/contexts>
+	a lv2:Specification , lv2:Feature ;
+	doap:name "LV2 Contexts" ;
+	doap:shortdesc "Support for plugins with several execution contexts." ;
+	lv2:documentation """
+<p>An extension for LV2 plugins which have several execution contexts.</p>
+
+<p>Contexts allow plugins to run tasks and/or process input/output in
+multiple threads.  Contexts can be used to add non-realtime functionality
+to a plugin while still keeping the audio run() method realtime safe.</p>
+
+<p>A context is an LV2 feature, so the usual LV2 feature mechanism is used
+to determine whether a plugin has a given context, and whether or not it is
+mandatory.</p>
+
+<p>Unless otherwise stated, each context (defined by some URI) adds a new
+threading class similar to the Audio class defined by LV2.  Each context has a
+run callback and a connect_port callback both in the same class (i.e. can't be
+called concurrently), but may be called concurrently with functions for other
+contexts (excluding the Instantiation class).  Context properties such as
+ctx:hardRTCapable apply to both functions.
+The host MUST only call the correct connect_port function associated with the
+context for that port, i.e. it is an error to use the main LV2 connect_port
+function on a port with a context other than the main LV2 run function.</p>
+""" .
+
+
+##########################
+## Context Base Classes ##
+##########################
+
+ctx:Context a rdfs:Class ;
+	rdfs:label "LV2 Context" ;
+	lv2:documentation """
+<p>A potentially concurrent context (callback) on a plugin.</p>
+
+<p>Ports are always associated with a context.  If a port has no explicit context
+property, then its context is ctx:audioContext (the default LV2 run() context).</p>
+
+<p>A plugin indicates support for a context by supporting an LV2 Feature with
+that context's URI.  If a plugin optionally supports a context (e.g.
+<code>&lt;plugin&gt; lv2:optionalFeature ctx:idleContext .</code>), then
+all ports associated with that context MUST be lv2:connectionOptional.  Thus,
+hosts that do not support contexts will connect such ports to NULL and the
+plugin can run with only a standard LV2 run() context.</p>
+
+<p>Any plugin that supports any context (optionally or mandatorily) MUST adhere
+to the following additional threading rules for LV2_Descriptor.connect_port:</p>
+<ul>
+<li>connect_port MUST only be called for a given port from the context
+associated with that port</li>
+<li>connect_port MAY be called concurrently for ports with different
+contexts (but MUST NOT be called concurrently for multiple ports in the
+same context)</li>
+</ul>
+<p>Note this implies that any shared data access in connect_port may be
+accessed concurrently.  The plugin is responsible for any synchronisation
+or locking necessary to make this possible.</p>
+""" .
+
+ctx:audioContext a ctx:Context , lv2:Feature ;
+	rdfs:comment """The context of LV2_Descriptor.run().""" .
+
+ctx:messageContext a ctx:Context , lv2:Feature ;
+	lv2:documentation """
+<p>A non-realtime context for plugin control via message passing.  This context
+has a run method which takes a bitset of flags for parameters specifying which
+input and output ports are valid before and after the run method has executed,
+respectively (see <code>LV2_Contexts_MessageContext</code>).</p>
+""" .
+
+ctx:idleContext a ctx:Context , lv2:Feature ;
+	rdfs:comment """
+A non-realtime idle context, periodically run by the host roughly every second.
+This context never has any ports.
+""" .
+
+ctx:requestRunFeature a lv2:Feature ;
+	lv2:documentation """
+<p>A feature allowing the plugin to request the execution of a particular
+context at an arbitrary time.  To support this feature, the host MUST pass an
+LV2_Feature to <code>instantiate</code> with <code>data</code> pointing to a
+LV2_Contexts_Request_Run_Feature.</p>
+
+<p>The plugin MAY call <code>request_run</code> with the given
+<code>data</code> from any non-realtime context to demand soon-as-possible execution
+of the specified context.</p>
+""" .
+
+ctx:context a rdf:Property ;
+	rdfs:domain lv2:Port ;
+	rdfs:range  ctx:Context ;
+	rdfs:label  "is used in context" ;
+	rdfs:comment """
+The context a particular port is associated with; the port will only be
+connected/read/written by that context.
+
+If no context is specified, the port is considered part of the default LV2
+audio context.""" .
+
+
diff --git a/ns/ext/contexts/ext.pc.in b/ns/ext/contexts/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/contexts/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/contexts/manifest.ttl b/ns/ext/contexts/manifest.ttl
new file mode 100644
index 0000000..d2cc036
--- /dev/null
+++ b/ns/ext/contexts/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/contexts>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <contexts.ttl> .
+
diff --git a/ns/ext/contexts/test.c b/ns/ext/contexts/test.c
new file mode 100644
index 0000000..ca41a10
--- /dev/null
+++ b/ns/ext/contexts/test.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <limits.h>
+#include <assert.h>
+#include <unistd.h>
+#include "contexts.h"
+
+#define TEST_ASSERT(check) do {\
+	if (!(check)) {\
+		fprintf(stderr, "Failure at line %d: %s\n", __LINE__, #check);\
+		assert(false);\
+		_exit(1);\
+	}\
+} while (0)
+
+#define NUM_PORTS 64
+
+void
+print_flags(void* flags)
+{
+	for (int i = NUM_PORTS; i >= 0; --i)
+		printf((lv2_contexts_port_is_valid(flags, i)) ? "1" : "0");
+	printf("\n");
+}
+
+
+int
+main()
+{
+	uint64_t flags = 0;
+	print_flags(&flags);
+
+	lv2_contexts_set_port_valid(&flags, 16);
+	print_flags(&flags);
+	for (int i = 0; i < NUM_PORTS; ++i) {
+		if (i == 16) {
+			TEST_ASSERT(lv2_contexts_port_is_valid(&flags, i));
+		} else {
+			TEST_ASSERT(!lv2_contexts_port_is_valid(&flags, i));
+		}
+	}
+
+	lv2_contexts_set_port_valid(&flags, 46);
+	lv2_contexts_set_port_valid(&flags, 0);
+	print_flags(&flags);
+	for (int i = 0; i < NUM_PORTS; ++i) {
+		if (i == 0 || i == 16 || i == 46) {
+			TEST_ASSERT(lv2_contexts_port_is_valid(&flags, i));
+		} else {
+			TEST_ASSERT(!lv2_contexts_port_is_valid(&flags, i));
+		}
+	}
+
+	lv2_contexts_unset_port_valid(&flags, 16);
+	print_flags(&flags);
+	for (int i = 0; i < NUM_PORTS; ++i) {
+		if (i == 0 || i == 46) {
+			TEST_ASSERT(lv2_contexts_port_is_valid(&flags, i));
+		} else {
+			TEST_ASSERT(!lv2_contexts_port_is_valid(&flags, i));
+		}
+	}
+
+	return 0;
+}
+
diff --git a/ns/ext/contexts/waf b/ns/ext/contexts/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/contexts/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/contexts/wscript b/ns/ext/contexts/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/contexts/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/cv-port/cv-port.ttl b/ns/ext/cv-port/cv-port.ttl
new file mode 100644
index 0000000..f49024b
--- /dev/null
+++ b/ns/ext/cv-port/cv-port.ttl
@@ -0,0 +1,77 @@
+# LV2 CV Port Extension
+# Copyright 2011 David Robillard <http://drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix cv:   <http://lv2plug.in/ns/ext/cv-port#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@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#> .
+
+<http://lv2plug.in/ns/ext/cv-port>
+	a lv2:Specification ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 CV Port" ;
+	doap:shortdesc "Control Voltage ports for LV2 plugins." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This extension defines Control Voltage (CV) ports, which are audio-rate
+control ports like those used on classical voltage-controlled synthesizers.
+These ports serve as control ports like <a
+href="http://lv2plug.in/ns/lv2core#ControlPort">lv2:ControlPort</a> but can
+also be used for audio-rate modulation of control signals.  This enables many
+types of processing and synthesis which are not possible with a lower control
+rate.</p>
+""" .
+
+cv:CVPort
+	a rdfs:Class ;
+	rdfs:label "CV Port" ;
+	rdfs:subClassOf lv2:Port ;
+	lv2:documentation """
+
+<p>Ports of this type have identical semantics to <a
+href="http://lv2plug.in/ns/lv2core#AudioPort">lv2:AudioPort</a> in terms of
+buffer format and connection/input/output logistics.  However, rather than the
+buffer representing audio, the buffer represents audio-rate control data.  A
+CVPort SHOULD have the same properties a <a
+href="http://lv2plug.in/ns/lv2core#ControlPort">lv2:ControlPort</a> typically
+has to describe appropriate control values (e.g.  <a
+href="http://lv2plug.in/ns/lv2core#minimum">lv2:minimum</a>, <a
+href="http://lv2plug.in/ns/lv2core#maximum">lv2:maximum</a>, <a
+href="http://lv2plug.in/ns/lv2core#default">lv2:default</a>)</p>
+
+<p>Hosts SHOULD take care to prevent data from a CVPort port from being used as
+audio except in cases where this is known to be safe.</p>
+
+<p>Example:</p>
+<pre class="turtle-code">
+&lt;http://example.org/some-plugin&gt;
+    lv2:port [
+        a cv:CVPort, lv2:InputPort ;
+        lv2:index 0 ;
+        lv2:minimum -1.0 ;
+        lv2:maximum 1.0 ;
+        lv2:default 0.0 ;
+        lv2:symbol "modulation" ;
+        lv2:name "Modulation" ;
+    ] .
+</pre>
+""" .
diff --git a/ns/ext/cv-port/ext.pc.in b/ns/ext/cv-port/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/cv-port/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/cv-port/manifest.ttl b/ns/ext/cv-port/manifest.ttl
new file mode 100644
index 0000000..e5fa145
--- /dev/null
+++ b/ns/ext/cv-port/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/cv-port>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <cv-port.ttl> .
+
diff --git a/ns/ext/cv-port/waf b/ns/ext/cv-port/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/cv-port/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/cv-port/wscript b/ns/ext/cv-port/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/cv-port/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/data-access/data-access.h b/ns/ext/data-access/data-access.h
new file mode 100644
index 0000000..fac6974
--- /dev/null
+++ b/ns/ext/data-access/data-access.h
@@ -0,0 +1,56 @@
+/*
+  LV2 Data Access Extension
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file data-access.h
+   C header for the LV2 Extension Data extension
+   <http://lv2plug.in/ns/ext/data-access>.
+
+   This extension defines a method for (e.g.) plugin UIs to have (possibly
+   marshalled) access to the extension_data function on a plugin instance.
+*/
+
+#ifndef LV2_DATA_ACCESS_H
+#define LV2_DATA_ACCESS_H
+
+#define LV2_DATA_ACCESS_URI "http://lv2plug.in/ns/ext/data-access"
+
+/**
+   The data field of the LV2_Feature for this extension.
+ 
+   To support this feature the host must pass an LV2_Feature struct to the
+   instantiate method with URI "http://lv2plug.in/ns/ext/data-access"
+   and data pointed to an instance of this struct.
+*/
+typedef struct {
+	/**
+	   A pointer to a method the UI can call to get data (of a type specified
+	   by some other extension) from the plugin.
+	 
+	   This call never is never guaranteed to return anything, UIs should
+	   degrade gracefully if direct access to the plugin data is not possible
+	   (in which case this function will return NULL).
+	 
+	   This is for access to large data that can only possibly work if the UI
+	   and plugin are running in the same process.  For all other things, use
+	   the normal LV2 UI communication system.
+	*/
+	const void* (*data_access)(const char* uri);
+
+} LV2_Extension_Data_Feature;
+
+#endif /* LV2_DATA_ACCESS_H */
diff --git a/ns/ext/data-access/data-access.ttl b/ns/ext/data-access/data-access.ttl
new file mode 100644
index 0000000..1f2ec04
--- /dev/null
+++ b/ns/ext/data-access/data-access.ttl
@@ -0,0 +1,82 @@
+# LV2 Data Access Extension
+# Copyright 2008-2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix da:    <http://lv2plug.in/ns/ext/data-access#> .
+@prefix dcs:   <http://ontologi.es/doap-changeset#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/ext/data-access>
+	a lv2:Specification ,
+		doap:Project ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 Data Access" ;
+	doap:shortdesc "Provides access to LV2_Descriptor::extension_data()." ;
+	doap:developer <http://drobilla.net/drobilla#me> ;
+	doap:release [
+		doap:revision "1.4" ;
+		doap:created "2011-11-14" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.4.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Update packaging."
+			] , [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "1.2" ;
+		doap:created "2011-05-26" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Add build system for installation."
+			] , [
+				rdfs:label "Switch to ISC license."
+			]
+		]
+	] , [
+		doap:revision "1.0" ;
+		doap:created "2010-10-04" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-data-access-1.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] ;
+	lv2:documentation """
+<p>This extension defines a feature, LV2_Extension_Data_Feature, which provides
+access to LV2_Descriptor::extension_data() for plugin UIs or other potentially
+remote users of a plugin.</p>
+
+<p>To support this feature the host must pass an LV2_Feature struct to the
+instantiate method with URI "http://lv2plug.in/ns/ext/data-access" and data
+pointed to an instance of LV2_Extension_Data_Feature.</p>
+""" .
\ No newline at end of file
diff --git a/ns/ext/data-access/ext.pc.in b/ns/ext/data-access/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/data-access/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/data-access/manifest.ttl b/ns/ext/data-access/manifest.ttl
new file mode 100644
index 0000000..f7ccd9d
--- /dev/null
+++ b/ns/ext/data-access/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/data-access>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 4 ;
+	rdfs:seeAlso <data-access.ttl> .
+
diff --git a/ns/ext/data-access/waf b/ns/ext/data-access/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/data-access/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/data-access/wscript b/ns/ext/data-access/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/data-access/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/dynmanifest/dynmanifest.h b/ns/ext/dynmanifest/dynmanifest.h
new file mode 100644
index 0000000..56d829e
--- /dev/null
+++ b/ns/ext/dynmanifest/dynmanifest.h
@@ -0,0 +1,144 @@
+/*
+  Dynamic manifest specification for LV2
+  Copyright 2008-2011 Stefano D'Angelo <zanga.mail@gmail.com>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file dynmanifest.h
+   C header for the LV2 Dynamic Manifest extension
+   <http://lv2plug.in/ns/ext/dynmanifest>.
+   Revision: 1.1
+*/
+
+#ifndef LV2_DYN_MANIFEST_H_INCLUDED
+#define LV2_DYN_MANIFEST_H_INCLUDED
+
+#include <stdio.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define LV2_DYN_MANIFEST_URI "http://lv2plug.in/ns/ext/dynmanifest"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   Dynamic manifest generator handle.
+ 
+   This handle indicates a particular status of a dynamic manifest generator.
+   The host MUST NOT attempt to interpret it and, unlikely LV2_Handle, it is
+   NOT even valid to compare this to NULL. The dynamic manifest generator MAY
+   use it to reference internal data.
+*/
+typedef void * LV2_Dyn_Manifest_Handle;
+
+/**
+   Generate the dynamic manifest.
+ 
+   @param handle Pointer to an uninitialized dynamic manifest generator handle.
+ 
+   @param features NULL terminated array of LV2_Feature structs which represent
+   the features the host supports. The dynamic manifest generator may refuse to
+   (re)generate the dynamic manifest if required features are not found here
+   (however hosts SHOULD NOT use this as a discovery mechanism, instead of
+   reading the static manifest file). This array must always exist; if a host
+   has no features, it MUST pass a single element array containing NULL.
+ 
+   @return 0 on success, otherwise a non-zero error code. The host SHOULD
+   evaluate the result of the operation by examining the returned value and
+   MUST NOT try to interpret the value of handle.
+*/
+int lv2_dyn_manifest_open(LV2_Dyn_Manifest_Handle *  handle,
+                          const LV2_Feature *const * features);
+
+/**
+   Fetch a "list" of subject URIs described in the dynamic manifest.
+ 
+   The dynamic manifest generator has to fill the resource only with the needed
+   triples to make the host aware of the "objects" it wants to expose. For
+   example, if the plugin library exposes a regular LV2 plugin, it should
+   output only a triple like the following:
+ 
+   <http://www.example.com/plugin/uri> a lv2:Plugin .
+ 
+   The objects that are elegible for exposure are those that would need to be
+   represented by a subject node in a static manifest.
+ 
+   @param handle Dynamic manifest generator handle.
+ 
+   @param fp FILE * identifying the resource the host has to set up for the
+   dynamic manifest generator. The host MUST pass a writable, empty resource to
+   this function, and the dynamic manifest generator MUST ONLY perform write
+   operations on it at the end of the stream (e.g., using only fprintf(),
+   fwrite() and similar).
+ 
+   @return 0 on success, otherwise a non-zero error code.
+*/
+int lv2_dyn_manifest_get_subjects(LV2_Dyn_Manifest_Handle handle,
+                                  FILE *                  fp);
+
+/**
+   Function that fetches data related to a specific URI.
+ 
+   The dynamic manifest generator has to fill the resource with data related to
+   object represented by the given URI. For example, if the library exposes a
+   regular LV2 plugin whose URI, as retrieved by the host using
+   lv2_dyn_manifest_get_subjects() is http://www.example.com/plugin/uri, it
+   should output something like:
+
+   <pre>
+   <http://www.example.com/plugin/uri>
+       a lv2:Plugin ;
+       doap:name "My Plugin" ;
+       lv2:binary <mylib.so> ;
+       etc:etc "..." .
+   </pre>
+ 
+   @param handle Dynamic manifest generator handle.
+ 
+   @param fp FILE * identifying the resource the host has to set up for the
+   dynamic manifest generator. The host MUST pass a writable resource to this
+   function, and the dynamic manifest generator MUST ONLY perform write
+   operations on it at the current position of the stream (e.g. using only
+   fprintf(), fwrite() and similar).
+ 
+   @param uri URI to get data about (in the "plain" form, i.e., absolute URI
+   without Turtle prefixes).
+ 
+   @return 0 on success, otherwise a non-zero error code.
+*/
+int lv2_dyn_manifest_get_data(LV2_Dyn_Manifest_Handle handle,
+                              FILE *                  fp,
+                              const char *            uri);
+
+/**
+   Function that ends the operations on the dynamic manifest generator.
+  
+   This function SHOULD be used by the dynamic manifest generator to perform
+   cleanup operations, etc.
+ 
+   Once this function is called, referring to handle will cause undefined
+   behavior.
+ 
+   @param handle Dynamic manifest generator handle.
+*/
+void lv2_dyn_manifest_close(LV2_Dyn_Manifest_Handle handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_DYN_MANIFEST_H_INCLUDED */
diff --git a/ns/ext/dynmanifest/dynmanifest.ttl b/ns/ext/dynmanifest/dynmanifest.ttl
new file mode 100644
index 0000000..591cb11
--- /dev/null
+++ b/ns/ext/dynmanifest/dynmanifest.ttl
@@ -0,0 +1,122 @@
+# LV2 Dynamic Manifest Extension
+# Copyright 2008-2011 Stefano D'Angelo <zanga.mail@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix dman: <http://lv2plug.in/ns/ext/dynmanifest#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/dynmanifest>
+	a doap:Project ,
+		lv2:Specification ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 Dynamic Manifest" ;
+	doap:homepage <http://naspro.atheme.org> ;
+	doap:created "2009-06-13" ;
+	doap:shortdesc "An LV2-based specification for dynamic data generation." ;
+	doap:programming-language "C" ;
+	doap:release [
+		doap:revision "1.1" ;
+		doap:created "2011-11-17"
+	] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "Stefano D'Angelo"
+	] ;
+    lv2:documentation """
+<p>The LV2 API, on its own, cannot be used to write plugin libraries where data
+is dynamically generated at runtime (e.g. API wrappers), since LV2 requires
+needed information to be provided in one or more static data (RDF) files. This
+API addresses this limitation by extending the LV2 API.</p>
+
+<p>To detect that a plugin library implements a dynamic manifest generator,
+the host checks its static manifest for a description like:</p>
+
+<pre class="turtle-code">
+&lt;http://example.org/my-dynamic-manifest&gt;
+    a dman:DynManifest ;
+    lv2:binary &lt;mydynmanifest.so&gt; .
+</pre>
+
+<p>To load the data, the host loads the library
+(e.g. <code>mydynmanifest.so</code>) as usual and fetches the dynamic Turtle
+data from it using this API.</p>
+
+<p>The host is allowed to request regeneration of the dynamic manifest multiple
+times, and the plugin library is expected to provide updated data if/when
+possible.  All data and references provided via this API before the last
+regeneration of the dynamic manifest is to be considered invalid by the host,
+including plugin descriptors whose URIs were discovered using this API.</p>
+
+<h3>Accessing Data</h3>
+
+<p>Whenever a host wants to access data using this API, it could:</p>
+
+<ol>
+<li>Call lv2_dyn_manifest_open().</li>
+<li>Create a FILE for functions to write data to (e.g. using tmpfile()).</li>
+<li>Get a <q>list</q> of exposed subject URIs using
+    lv2_dyn_manifest_get_subjects().</li>
+<li>Call lv2_dyn_manifest_get_data() for each URI of interest to
+    get the data related to that URI (which can be written to any FILE).</li>
+<li>Call lv2_dyn_manifest_close().</li>
+<li>Parse the content of the FILE(s).</li>
+<li>Free/delete/unlink the FILE(s).</li>
+</ol>
+
+<p>Each call to the above mentioned dynamic manifest functions MUST write a
+complete, valid Turtle document (including all needed prefix definitions) to
+the output FILE.</p>
+
+<p>Each call to lv2_dyn_manifest_open() causes the (re)generation of the
+dynamic manifest data, and invalidates all data fetched before the call.</p>
+
+<p>In case the plugin library uses this same API to access other dynamic
+manifests, it MUST implement some mechanism to avoid potentially endless loops
+(such as A loads B, B loads A, etc.) and, in case such a loop is detected, the
+operation MUST fail.  For this purpose, use of a static boolean flag is
+suggested.</p>
+
+<h3>Threading Rules</h3>
+
+<p>All of the functions defined by this specification belong to the Discovery
+class.</p>
+""" .
+
+dman:DynManifest
+	a rdfs:Class ;
+	rdfs:subClassOf lv2:Resource ;
+	rdfs:label "Dynamic manifest generator" ;
+	rdfs:subClassOf [
+		a owl:Restriction ;
+		owl:onProperty lv2:binary ;
+		owl:minCardinality 1 ;
+		rdfs:comment """A DynManifest has at least 1 lv2:binary.
+The binary must be a library with at least the functions described in
+lv2_dyn_manifest.h implemented.
+"""
+	] ;
+	rdfs:comment """
+The class which represents a dynamic manifest generator.
+
+There MUST NOT be any instances of :DynManifest in the generated manifest.
+
+All relative URIs in the generated data MUST be relative to the base path
+that would be used to parse a normal LV2 manifest (the bundle path).
+""" .
diff --git a/ns/ext/dynmanifest/ext.pc.in b/ns/ext/dynmanifest/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/dynmanifest/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl b/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl
new file mode 100644
index 0000000..f47c381
--- /dev/null
+++ b/ns/ext/dynmanifest/lv2-dynmanifest.doap.ttl
@@ -0,0 +1,43 @@
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/ext/dynmanifest>
+	a doap:Project ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 Dynamic Manifest" ;
+	doap:homepage <http://naspro.atheme.org> ;
+	doap:created "2009-06-13" ;
+	doap:shortdesc "An LV2-based specification for dynamic data generation." ;
+	doap:programming-language "C" ;
+	doap:developer [
+		a foaf:Person ;
+		foaf:name "Stefano D'Angelo"
+	] ;
+	doap:release [
+		doap:revision "1.1" ;
+		doap:created "2011-11-17" ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "1.0" ;
+		doap:created "2010-04-10" ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] .
diff --git a/ns/ext/dynmanifest/manifest.ttl b/ns/ext/dynmanifest/manifest.ttl
new file mode 100644
index 0000000..6718092
--- /dev/null
+++ b/ns/ext/dynmanifest/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/dynmanifest>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <dynmanifest.ttl> ,
+		<lv2-dynmanifest.doap.ttl> .
diff --git a/ns/ext/dynmanifest/waf b/ns/ext/dynmanifest/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/dynmanifest/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/dynmanifest/wscript b/ns/ext/dynmanifest/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/dynmanifest/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/event/event-helpers.h b/ns/ext/event/event-helpers.h
new file mode 100644
index 0000000..75ba14b
--- /dev/null
+++ b/ns/ext/event/event-helpers.h
@@ -0,0 +1,246 @@
+/* lv2_event_helpers.h - Helper functions for the LV2 events extension.
+ *
+ * Copyright (C) 2008-2009 David Robillard <http://drobilla.net>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This header 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this header; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 01222-1307 USA
+ */
+
+#ifndef LV2_EVENT_HELPERS_H
+#define LV2_EVENT_HELPERS_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "lv2/lv2plug.in/ns/ext/event/event.h"
+
+/** @file
+ * Helper functions for the LV2 Event extension
+ * <http://lv2plug.in/ns/ext/event>.
+ *
+ * These functions are provided for convenience only, use of them is not
+ * required for supporting lv2ev (i.e. the events extension is defined by the
+ * raw buffer format described in lv2_event.h and NOT by this API).
+ *
+ * Note that these functions are all static inline which basically means:
+ * do not take the address of these functions. */
+
+
+/** Pad a size to 64 bits (for event sizes) */
+static inline uint16_t
+lv2_event_pad_size(uint16_t size)
+{
+	return (size + 7) & (~7);
+}
+
+
+/** Initialize (empty, reset..) an existing event buffer.
+ * The contents of buf are ignored entirely and overwritten, except capacity
+ * which is unmodified. */
+static inline void
+lv2_event_buffer_reset(LV2_Event_Buffer*  buf,
+                       uint16_t           stamp_type,
+                       uint8_t           *data)
+{
+	buf->data = data;
+	buf->header_size = sizeof(LV2_Event_Buffer);
+	buf->stamp_type = stamp_type;
+	buf->event_count = 0;
+	buf->size = 0;
+}
+
+
+/** Allocate a new, empty event buffer. */
+static inline LV2_Event_Buffer*
+lv2_event_buffer_new(uint32_t capacity, uint16_t stamp_type)
+{
+	const size_t      size = sizeof(LV2_Event_Buffer) + capacity;
+	LV2_Event_Buffer* buf  = (LV2_Event_Buffer*)malloc(size);
+	if (buf != NULL) {
+		buf->capacity = capacity;
+		lv2_event_buffer_reset(buf, stamp_type, (uint8_t *)(buf + 1));
+		return buf;
+	} else {
+		return NULL;
+	}
+}
+
+
+/** An iterator over an LV2_Event_Buffer.
+ *
+ * Multiple simultaneous read iterators over a single buffer is fine,
+ * but changing the buffer invalidates all iterators (e.g. RW Lock). */
+typedef struct {
+	LV2_Event_Buffer* buf;
+	uint32_t          offset;
+} LV2_Event_Iterator;
+
+
+/** Reset an iterator to point to the start of @a buf.
+ * @return True if @a iter is valid, otherwise false (buffer is empty) */
+static inline bool
+lv2_event_begin(LV2_Event_Iterator* iter,
+                LV2_Event_Buffer*   buf)
+{
+	iter->buf = buf;
+	iter->offset = 0;
+	return (buf->size > 0);
+}
+
+
+/** Check if @a iter is valid.
+ * @return True if @a iter is valid, otherwise false (past end of buffer) */
+static inline bool
+lv2_event_is_valid(LV2_Event_Iterator* iter)
+{
+	return (iter->offset < iter->buf->size);
+}
+
+
+/** Advance @a iter forward one event.
+ * @a iter must be valid.
+ * @return True if @a iter is valid, otherwise false (reached end of buffer) */
+static inline bool
+lv2_event_increment(LV2_Event_Iterator* iter)
+{
+	assert(lv2_event_is_valid(iter));
+
+	LV2_Event* const ev = (LV2_Event*)(
+			(uint8_t*)iter->buf->data + iter->offset);
+
+	iter->offset += lv2_event_pad_size(sizeof(LV2_Event) + ev->size);
+
+	return true;
+}
+
+
+/** Dereference an event iterator (get the event currently pointed at).
+ * @a iter must be valid.
+ * @a data if non-NULL, will be set to point to the contents of the event
+ *         returned.
+ * @return A Pointer to the event @a iter is currently pointing at, or NULL
+ *         if the end of the buffer is reached (in which case @a data is
+ *         also set to NULL). */
+static inline LV2_Event*
+lv2_event_get(LV2_Event_Iterator* iter,
+              uint8_t**           data)
+{
+	assert(lv2_event_is_valid(iter));
+
+	LV2_Event* const ev = (LV2_Event*)(
+			(uint8_t*)iter->buf->data + iter->offset);
+
+	if (data)
+		*data = (uint8_t*)ev + sizeof(LV2_Event);
+
+	return ev;
+}
+
+
+/** Write an event at @a iter.
+ * The event (if any) pointed to by @a iter will be overwritten, and @a iter
+ * incremented to point to the following event (i.e. several calls to this
+ * function can be done in sequence without twiddling iter in-between).
+ * @return True if event was written, otherwise false (buffer is full). */
+static inline bool
+lv2_event_write(LV2_Event_Iterator* iter,
+                uint32_t            frames,
+                uint32_t            subframes,
+                uint16_t            type,
+                uint16_t            size,
+                const uint8_t*      data)
+{
+	if (iter->buf->capacity - iter->buf->size < sizeof(LV2_Event) + size)
+		return false;
+
+	LV2_Event* const ev = (LV2_Event*)(
+			(uint8_t*)iter->buf->data + iter->offset);
+
+	ev->frames = frames;
+	ev->subframes = subframes;
+	ev->type = type;
+	ev->size = size;
+	memcpy((uint8_t*)ev + sizeof(LV2_Event), data, size);
+	++iter->buf->event_count;
+
+	size = lv2_event_pad_size(sizeof(LV2_Event) + size);
+	iter->buf->size += size;
+	iter->offset    += size;
+
+	return true;
+}
+
+
+/** Reserve space for an event in the buffer and return a pointer to
+    the memory where the caller can write the event data, or NULL if there
+    is not enough room in the buffer. */
+static inline uint8_t*
+lv2_event_reserve(LV2_Event_Iterator* iter,
+		  uint32_t frames,
+		  uint32_t subframes,
+		  uint16_t type,
+		  uint16_t size)
+{
+	size = lv2_event_pad_size(size);
+	if (iter->buf->capacity - iter->buf->size < sizeof(LV2_Event) + size)
+		return NULL;
+
+	LV2_Event* const ev = (LV2_Event*)((uint8_t*)iter->buf->data +
+					   iter->offset);
+
+	ev->frames = frames;
+	ev->subframes = subframes;
+	ev->type = type;
+	ev->size = size;
+	++iter->buf->event_count;
+
+	size = lv2_event_pad_size(sizeof(LV2_Event) + size);
+	iter->buf->size += size;
+	iter->offset    += size;
+
+	return (uint8_t*)ev + sizeof(LV2_Event);
+}
+
+
+/** Write an event at @a iter.
+ * The event (if any) pointed to by @a iter will be overwritten, and @a iter
+ * incremented to point to the following event (i.e. several calls to this
+ * function can be done in sequence without twiddling iter in-between).
+ * @return True if event was written, otherwise false (buffer is full). */
+static inline bool
+lv2_event_write_event(LV2_Event_Iterator* iter,
+                      const LV2_Event*    ev,
+                      const uint8_t*      data)
+{
+	if (iter->buf->capacity - iter->buf->size < sizeof(LV2_Event) + ev->size)
+		return false;
+
+	LV2_Event* const write_ev = (LV2_Event*)(
+			(uint8_t*)iter->buf->data + iter->offset);
+
+	*write_ev = *ev;
+	memcpy((uint8_t*)write_ev + sizeof(LV2_Event), data, ev->size);
+	++iter->buf->event_count;
+
+	const uint16_t size = lv2_event_pad_size(sizeof(LV2_Event) + ev->size);
+	iter->buf->size += size;
+	iter->offset    += size;
+
+	return true;
+}
+
+#endif /* LV2_EVENT_HELPERS_H */
+
diff --git a/ns/ext/event/event.h b/ns/ext/event/event.h
new file mode 100644
index 0000000..2c340ba
--- /dev/null
+++ b/ns/ext/event/event.h
@@ -0,0 +1,281 @@
+/*
+  LV2 Event Extension
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+  Copyright 2006-2007 Lars Luthman <lars.luthman@gmail.com>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_EVENT_H
+#define LV2_EVENT_H
+
+#define LV2_EVENT_URI "http://lv2plug.in/ns/ext/event"
+#define LV2_EVENT_AUDIO_STAMP 0
+
+#include <stdint.h>
+
+/**
+   @file event.h
+   C API for the LV2 Event extension <http://lv2plug.in/ns/ext/event>.
+ 
+   This extension is a generic transport mechanism for time stamped events
+   of any type (e.g. MIDI, OSC, ramps, etc). Each port can transport mixed
+   events of any type; the type of events and timestamps are defined by a URI
+   which is mapped to an integer by the host for performance reasons.
+ 
+   This extension requires the host to support the LV2 URI Map extension.
+   Any host which supports this extension MUST guarantee that any call to
+   the LV2 URI Map uri_to_id function with the URI of this extension as the
+   'map' argument returns a value within the range of uint16_t.
+*/
+
+/**
+   The best Pulses Per Quarter Note for tempo-based uint32_t timestamps.
+   Equal to 2^12 * 5 * 7 * 9 * 11 * 13 * 17, which is evenly divisble
+   by all integers from 1 through 18 inclusive, and powers of 2 up to 2^12.
+*/
+static const uint32_t LV2_EVENT_PPQN = 3136573440U;
+
+/**
+   An LV2 event (header only).
+ 
+   LV2 events are generic time-stamped containers for any type of event.
+   The type field defines the format of a given event's contents.
+ 
+   This struct defines the header of an LV2 event. An LV2 event is a single
+   chunk of POD (plain old data), usually contained in a flat buffer (see
+   LV2_EventBuffer below). Unless a required feature says otherwise, hosts may
+   assume a deep copy of an LV2 event can be created safely using a simple:
+ 
+   memcpy(ev_copy, ev, sizeof(LV2_Event) + ev->size);  (or equivalent)
+*/
+typedef struct {
+
+	/**
+	   The frames portion of timestamp. The units used here can optionally be
+	   set for a port (with the lv2ev:timeUnits property), otherwise this is
+	   audio frames, corresponding to the sample_count parameter of the LV2 run
+	   method (e.g. frame 0 is the first frame for that call to run).
+	*/
+	uint32_t frames;
+
+	/**
+	   The sub-frames portion of timestamp. The units used here can optionally
+	   be set for a port (with the lv2ev:timeUnits property), otherwise this is
+	   1/(2^32) of an audio frame.
+	*/
+	uint32_t subframes;
+
+	/**
+	   The type of this event, as a number which represents some URI
+	   defining an event type. This value MUST be some value previously
+	   returned from a call to the uri_to_id function defined in the LV2
+	   URI map extension (see lv2_uri_map.h).
+	   There are special rules which must be followed depending on the type
+	   of an event. If the plugin recognizes an event type, the definition
+	   of that event type will describe how to interpret the event, and
+	   any required behaviour. Otherwise, if the type is 0, this event is a
+	   non-POD event and lv2_event_unref MUST be called if the event is
+	   'dropped' (see above). Even if the plugin does not understand an event,
+	   it may pass the event through to an output by simply copying (and NOT
+	   calling lv2_event_unref). These rules are designed to allow for generic
+	   event handling plugins and large non-POD events, but with minimal hassle
+	   on simple plugins that "don't care" about these more advanced features.
+	*/
+	uint16_t type;
+
+	/**
+	   The size of the data portion of this event in bytes, which immediately
+	   follows. The header size (12 bytes) is not included in this value.
+	*/
+	uint16_t size;
+
+	/* size bytes of data follow here */
+
+} LV2_Event;
+
+
+/**
+   A buffer of LV2 events (header only).
+ 
+   Like events (which this contains) an event buffer is a single chunk of POD:
+   the entire buffer (including contents) can be copied with a single memcpy.
+   The first contained event begins sizeof(LV2_EventBuffer) bytes after the
+   start of this struct.
+ 
+   After this header, the buffer contains an event header (defined by struct
+   LV2_Event), followed by that event's contents (padded to 64 bits), followed
+   by another header, etc:
+ 
+   |       |       |       |       |       |       |
+   | | | | | | | | | | | | | | | | | | | | | | | | |
+   |FRAMES |SUBFRMS|TYP|LEN|DATA..DATA..PAD|FRAMES | ...
+*/
+typedef struct {
+
+	/**
+	   The contents of the event buffer. This may or may not reside in the
+	   same block of memory as this header, plugins must not assume either.
+	   The host guarantees this points to at least capacity bytes of allocated
+	   memory (though only size bytes of that are valid events).
+	*/
+	uint8_t* data;
+
+	/**
+	   The size of this event header in bytes (including everything).
+	 
+	   This is to allow for extending this header in the future without
+	   breaking binary compatibility. Whenever this header is copied,
+	   it MUST be done using this field (and NOT the sizeof this struct).
+	*/
+	uint16_t header_size;
+
+	/**
+	   The type of the time stamps for events in this buffer.
+	   As a special exception, '0' always means audio frames and subframes
+	   (1/UINT32_MAX'th of a frame) in the sample rate passed to instantiate.
+
+	   INPUTS: The host must set this field to the numeric ID of some URI
+	   defining the meaning of the frames/subframes fields of contained events
+	   (obtained by the LV2 URI Map uri_to_id function with the URI of this
+	   extension as the 'map' argument, see lv2_uri_map.h).  The host must
+	   never pass a plugin a buffer which uses a stamp type the plugin does not
+	   'understand'. The value of this field must never change, except when
+	   connect_port is called on the input port, at which time the host MUST
+	   have set the stamp_type field to the value that will be used for all
+	   subsequent run calls.
+	   
+	   OUTPUTS: The plugin may set this to any value that has been returned
+	   from uri_to_id with the URI of this extension for a 'map' argument.
+	   When connected to a buffer with connect_port, output ports MUST set this
+	   field to the type of time stamp they will be writing. On any call to
+	   connect_port on an event input port, the plugin may change this field on
+	   any output port, it is the responsibility of the host to check if any of
+	   these values have changed and act accordingly.
+	*/
+	uint16_t stamp_type;
+
+	/**
+	   The number of events in this buffer.
+
+	   INPUTS: The host must set this field to the number of events contained
+	   in the data buffer before calling run(). The plugin must not change
+	   this field.
+
+	   OUTPUTS: The plugin must set this field to the number of events it has
+	   written to the buffer before returning from run(). Any initial value
+	   should be ignored by the plugin.
+	*/
+	uint32_t event_count;
+
+	/**
+	   The size of the data buffer in bytes.
+	   This is set by the host and must not be changed by the plugin.
+	   The host is allowed to change this between run() calls.
+	*/
+	uint32_t capacity;
+
+	/**
+	   The size of the initial portion of the data buffer containing data.
+
+	   INPUTS: The host must set this field to the number of bytes used
+	   by all events it has written to the buffer (including headers)
+	   before calling the plugin's run().
+	   The plugin must not change this field.
+
+	   OUTPUTS: The plugin must set this field to the number of bytes
+	   used by all events it has written to the buffer (including headers)
+	   before returning from run().
+	   Any initial value should be ignored by the plugin.
+	*/
+	uint32_t size;
+
+} LV2_Event_Buffer;
+
+
+/**
+   Opaque pointer to host data.
+*/
+typedef void* LV2_Event_Callback_Data;
+
+
+/**
+   Non-POD events feature.
+ 
+   To support this feature the host must pass an LV2_Feature struct to the
+   plugin's instantiate method with URI "http://lv2plug.in/ns/ext/event"
+   and data pointed to an instance of this struct.  Note this feature
+   is not mandatory to support the event extension.
+*/
+typedef struct {
+
+	/**
+	   Opaque pointer to host data.
+	 
+	   The plugin MUST pass this to any call to functions in this struct.
+	   Otherwise, it must not be interpreted in any way.
+	*/
+	LV2_Event_Callback_Data callback_data;
+
+	/**
+	   Take a reference to a non-POD event.
+	 
+	   If a plugin receives an event with type 0, it means the event is a
+	   pointer to some object in memory and not a flat sequence of bytes
+	   in the buffer. When receiving a non-POD event, the plugin already
+	   has an implicit reference to the event. If the event is stored AND
+	   passed to an output, lv2_event_ref MUST be called on that event.
+	   If the event is only stored OR passed through, this is not necessary
+	   (as the plugin already has 1 implicit reference).
+	 
+	   @param event An event received at an input that will not be copied to
+	   an output or stored in any way.
+	   
+	   @param context The calling context. Like event types, this is a mapped
+	   URI, see lv2_context.h. Simple plugin with just a run() method should
+	   pass 0 here (the ID of the 'standard' LV2 run context). The host
+	   guarantees that this function is realtime safe iff @a context is
+	   realtime safe.
+	 
+	   PLUGINS THAT VIOLATE THESE RULES MAY CAUSE CRASHES AND MEMORY LEAKS.
+	*/
+	uint32_t (*lv2_event_ref)(LV2_Event_Callback_Data callback_data,
+	                          LV2_Event*              event);
+
+	/**
+	   Drop a reference to a non-POD event.
+	 
+	   If a plugin receives an event with type 0, it means the event is a
+	   pointer to some object in memory and not a flat sequence of bytes
+	   in the buffer. If the plugin does not pass the event through to
+	   an output or store it internally somehow, it MUST call this function
+	   on the event (more information on using non-POD events below).
+	 
+	   @param event An event received at an input that will not be copied to an
+	   output or stored in any way.
+	   
+	   @param context The calling context. Like event types, this is a mapped
+	   URI, see lv2_context.h. Simple plugin with just a run() method should
+	   pass 0 here (the ID of the 'standard' LV2 run context). The host
+	   guarantees that this function is realtime safe iff @a context is
+	   realtime safe.
+	 
+	   PLUGINS THAT VIOLATE THESE RULES MAY CAUSE CRASHES AND MEMORY LEAKS.
+	*/
+	uint32_t (*lv2_event_unref)(LV2_Event_Callback_Data callback_data,
+	                            LV2_Event*              event);
+
+} LV2_Event_Feature;
+
+
+#endif /* LV2_EVENT_H */
diff --git a/ns/ext/event/event.ttl b/ns/ext/event/event.ttl
new file mode 100644
index 0000000..d207a7a
--- /dev/null
+++ b/ns/ext/event/event.ttl
@@ -0,0 +1,194 @@
+# LV2 Event Extension
+# Copyright 2008-2011 David Robillard <http://drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix ev:    <http://lv2plug.in/ns/ext/event#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
+@prefix owl:   <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/event>
+	a lv2:Specification ;
+	owl:deprecated true ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 Event" ;
+    doap:shortdesc "A port-based real-time generic event interface." ;
+	rdfs:seeAlso <event-helpers.h> ;
+	doap:release [
+		doap:revision "1.3" ;
+		doap:created "2011-11-23"
+	] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.xrdf>
+	] , [
+		a foaf:Person ;
+		foaf:name "Lars Luthman" ;
+	] ;
+	lv2:documentation """
+<p><span class="warning">This extension is deprecated.</span> New
+implementations should use <a href="http://lv2plug.in/ns/ext/atom">LV2 Atom</a>
+instead.</p>
+
+<p>This extension defines a generic time-stamped event port type, which can be
+used to create plugins that read and write real-time events, such as MIDI,
+OSC, or any other type of event payload.  The type(s) of event supported by
+a port is defined in the data file for a plugin, for example:</p>
+<pre class="turtle-code">
+&lt;http://example.org/some-plugin&gt;
+    lv2:port [
+        a ev:EventPort, lv2:InputPort ;
+        lv2:index 0 ;
+        ev:supportsEvent &lt;http://lv2plug.in/ns/ext/midi#MidiEvent&gt; ;
+        lv2:symbol "midi_input" ;
+        lv2:name "MIDI input" ;
+    ] .
+</pre>
+""" .
+
+ev:EventPort a rdfs:Class ;
+	rdfs:label      "Event port" ;
+	rdfs:subClassOf lv2:Port ;
+	rdfs:comment    """
+Ports of this type will be connected to a struct of type LV2_Event_Buffer,
+defined in event.h.  These ports contain a sequence of generic events
+(possibly several types mixed in a single stream), the specific types of
+which are defined by some URI in another LV2 extension.
+""" .
+
+
+ev:Event a rdfs:Class ;
+	rdfs:label      "LV2 event" ;
+	rdfs:comment    """
+A single generic time-stamped event.
+
+An lv2ev:EventPort contains an LV2_Event_Buffer which contains a sequence
+of these events.  The binary format of LV2 events is defined by the
+LV2_Event struct in event.h.
+
+Specific event types (e.g. MIDI, OSC) are defined by extensions, and should
+be rdfs:subClassOf this class.
+""" .
+
+
+ev:TimeStamp a rdfs:Class ;
+	rdfs:label      "LV2 event time stamp" ;
+	rdfs:comment    """
+The time stamp of an Event.
+
+This defines the meaning of the 'frames' and 'subframes' fields of an
+LV2_Event (both unsigned 32-bit integers).
+""" .
+
+
+ev:FrameStamp a rdfs:Class ;
+	rdfs:subClassOf ev:TimeStamp ;
+	rdfs:label      "Audio frame time stamp" ;
+	rdfs:comment    """
+The default time stamp unit for an LV2 event: the frames field represents
+audio frames (in the sample rate passed to intantiate), and the subframes
+field is 1/UINT32_MAX of a frame.
+""" .
+
+
+ev:generic a lv2:PortProperty ;
+	rdfs:label "Generic event port" ;
+	rdfs:comment """
+Indicates that this port does something meaningful for any event type
+(e.g. event mixers, delays, serialisers, etc).  If this property is set, hosts
+should consider the port suitable for any type of event.  Otherwise, hosts 
+should consider the port 'appropriate' only for the specific event types
+listed with :supportsEvent.  Note that plugins must gracefully handle unknown
+event types whether or not this property is present.
+""" .
+
+
+ev:supportsEvent a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   ev:Event ;
+	rdfs:label   "Supports event type" ;
+	rdfs:comment """
+Indicates that this port supports or "understands" a certain event type.
+For input ports, this means the plugin understands and does something useful
+with events of this type.  For output ports, this means the plugin may generate
+events of this type.  If the plugin never actually generates events of this type,
+but might pass them through from an input, this property should not be set (use
+ev:inheritsEvent for that).
+Plugins with event input ports must always gracefully handle any type of event,
+even if it does not 'support' it.  This property should always be set for
+event types the plugin understands/generates so hosts can discover plugins
+appropriate for a given scenario (e.g. plugins with a MIDI input).
+Hosts are not expected to consider event ports suitable for some type of
+event if the relevant :supportsEvent property is not set, unless the
+lv2ev:generic property for that port is also set.
+""" .
+
+
+ev:inheritsEvent a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   lv2:Port ;
+	rdfs:label   "Inherits event type" ;
+	rdfs:comment """
+Indicates that this output port might pass through events that arrived at some
+other input port (or generate an event of the same type as events arriving at
+that input).  The host must always check the stamp type of all outputs when
+connecting an input, but this property should be set whenever it applies.
+""" .
+
+
+ev:supportsTimeStamp a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   ev:TimeStamp ;
+	rdfs:label   "Supports time stamp type" ;
+	rdfs:comment """
+Indicates that this port supports or "understands" a certain time stamp type.
+Meaningful only for input ports, the host must never connect a port to an
+event buffer with a time stamp type that isn't supported by the port.
+""" .
+
+
+ev:generatesTimeStamp a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   ev:TimeStamp ;
+	rdfs:label   "Outputs time stamp type" ;
+	rdfs:comment """
+Indicates that this port may output a certain time stamp type, regardless of
+the time stamp type of any input ports.  If the port outputs stamps based on
+what type inputs are connected to, this property should not be set (use the
+ev:inheritsTimeStamp property for that).  Hosts MUST check the time_stamp value
+of any output port buffers after a call to connect_port on ANY event input
+port on the plugin.  If the plugin changes the stamp_type field of an output
+event buffer during a call to run(), the plugin must call the
+stamp_type_changed function provided by the host in the LV2_Event_Feature
+struct, if it is non-NULL.
+""" .
+
+
+ev:inheritsTimeStamp a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   lv2:Port ;
+	rdfs:label   "Inherits time stamp type" ;
+	rdfs:comment """
+Indicates that this port follows the time stamp type of an input port.
+This property is not necessary, but it should be set for outputs that
+base their output type on an input port so the host can make more sense
+of the plugin and provide a more sensible interface.
+""" .
+
diff --git a/ns/ext/event/ext.pc.in b/ns/ext/event/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/event/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/event/manifest.ttl b/ns/ext/event/manifest.ttl
new file mode 100644
index 0000000..2b1ff43
--- /dev/null
+++ b/ns/ext/event/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/event>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 3 ;
+	rdfs:seeAlso <event.ttl> .
+
diff --git a/ns/ext/event/waf b/ns/ext/event/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/event/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/event/wscript b/ns/ext/event/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/event/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/files/ext.pc.in b/ns/ext/files/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/files/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/files/files.h b/ns/ext/files/files.h
new file mode 100644
index 0000000..623587a
--- /dev/null
+++ b/ns/ext/files/files.h
@@ -0,0 +1,134 @@
+/*
+  Copyright 2010-2011 David Robillard <d@drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file files.h
+   C API for the LV2 Files extension <http://lv2plug.in/ns/ext/files>.
+*/
+
+#ifndef LV2_FILES_H
+#define LV2_FILES_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LV2_FILES_URI                  "http://lv2plug.in/ns/ext/files"
+#define LV2_FILES_PATH_SUPPORT_URI     LV2_FILES_URI "#pathSupport"
+#define LV2_FILES_NEW_FILE_SUPPORT_URI LV2_FILES_URI "#newFileSupport"
+
+typedef void* LV2_Files_Host_Data;
+
+/**
+   files:pathSupport feature struct.
+   
+   To support this feature, the host MUST pass an LV2_Feature struct with @a
+   URI @ref LV2_FILES_PATH_SUPPORT_URI and @a data pointed to an instance of
+   this struct.
+*/
+typedef struct {
+
+	/**
+	   Opaque host data.
+	*/
+	LV2_Files_Host_Data host_data;
+
+	/**
+	   Map an absolute path to an abstract path for use in plugin state.
+	   @param host_data MUST be the @a host_data member of this struct.
+	   @param absolute_path The absolute path of a file.
+	   @return An abstract path suitable for use in plugin state.
+
+	   The plugin MUST use this function to map any paths that will be stored
+	   in plugin state.  The returned value is an abstract path which MAY not
+	   be an actual file system path; @ref absolute_path MUST be used to map it
+	   to an actual path in order to use the file.
+
+	   Hosts MAY map paths in any way (e.g. by creating symbolic links within
+	   the plugin's state directory or storing a list of referenced files for
+	   later export).  Plugins MUST NOT make any assumptions about abstract
+	   paths except that they can be mapped to an absolute path using @ref
+	   absolute_path.  Particularly when restoring from state, this absolute
+	   path MAY not be the same as the original absolute path, but the host
+	   MUST guarantee it refers to a file with contents equivalent to the
+	   original.
+
+	   This function may only be called within the context of
+	   LV2_Persist.save() or LV2_Persist.restore().  The caller is responsible
+	   for freeing the returned value.
+	*/
+	char* (*abstract_path)(LV2_Files_Host_Data host_data,
+	                       const char*         absolute_path);
+
+	/**
+	   Map an abstract path from plugin state to an absolute path.
+	   @param host_data MUST be the @a host_data member of this struct.
+	   @param abstract_path An abstract path (e.g. a path from plugin state).
+	   @return An absolute file system path.
+
+	   Since abstract paths are not necessarily actual file paths (or at least
+	   not necessarily absolute paths), this function MUST be used in order to
+	   actually open or otherwise use the file referred to by an abstract path.
+
+	   This function may only be called within the context of
+	   LV2_Persist.save() or LV2_Persist.restore().  The caller is responsible
+	   for freeing the returned value.
+	*/
+	char* (*absolute_path)(LV2_Files_Host_Data host_data,
+	                       const char*         abstract_path);
+
+} LV2_Files_Path_Support;
+
+/**
+   files:newFileSupport feature struct.
+   
+   To support this feature, the host MUST pass an LV2_Feature struct with @a
+   URI @ref LV2_FILES_NEW_FILE_SUPPORT_URI and @a data pointed to an instance
+   of this struct.
+*/
+typedef struct {
+
+	/**
+	   Opaque host data.
+	*/
+	LV2_Files_Host_Data host_data;
+
+	/**
+	   Return an absolute path the plugin may use to create a new file.
+	   @param host_data MUST be the @a host_data member of this struct.
+	   @param relative_path The relative path of the file.
+	   @return The absolute path to use for the new file.
+
+	   The plugin can assume @a relative_path is relative to a namespace
+	   dedicated to that plugin instance; hosts MUST ensure this, e.g. by
+	   giving each plugin instance its own state directory.  The returned path
+	   is absolute and thus suitable for creating and using a file, but NOT
+	   suitable for storing in plugin state (it MUST be mapped to an abstract
+	   path using @ref LV2_Files_Path_Support::abstract_path to do so).
+
+	   This function may be called from any non-realtime context.  The caller
+	   is responsible for freeing the returned value.
+	*/
+	char* (*new_file_path)(LV2_Files_Host_Data host_data,
+	                       const char*         relative_path);
+
+} LV2_Files_New_File_Support;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* LV2_FILES_H */
diff --git a/ns/ext/files/files.ttl b/ns/ext/files/files.ttl
new file mode 100644
index 0000000..d3ff8a5
--- /dev/null
+++ b/ns/ext/files/files.ttl
@@ -0,0 +1,115 @@
+# LV2 Files Extension
+# Copyright 2010-2011 David Robillard <d@drobilla.net>
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix atom:  <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix files: <http://lv2plug.in/ns/ext/files#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@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 xsd:   <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/files>
+	a lv2:Specification ;
+    doap:name "LV2 Files" ;
+    doap:shortdesc "A standard for referring to files in plugin state." ;
+    doap:license <http://opensource.org/licenses/isc-license> ;
+    doap:release [
+        doap:revision "0.2" ;
+        doap:created "2011-04-05"
+    ] ;
+    doap:maintainer [
+        a foaf:Person ;
+        foaf:name     "David Robillard" ;
+        foaf:homepage <http://drobilla.net/> ;
+        rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+    ] ;
+	lv2:documentation """
+<p>This extension provides a mechanism for plugins to portably refer to files
+in persistent plugin state (using the <a
+href="http://lv2plug.in/ns/ext/persist">LV2 Persist</a> extension), and create
+instance-local files in host-defined locations (e.g. for recording).</p>
+
+<p>The motivating idea behind this extension is that all details of file
+management MUST be handled by the host since different hosts may have very
+different requirements.  Plugins MUST NOT make any assumption about file system
+locations beyond what is explicitly guaranteed by this extension.</p>
+
+<p>This extension defines two features: files:newFileSupport allows plugins to
+create new files within an instance-specific namespace at any time (except in
+realtime contexts); while files:pathSupport allows plugins to refer to file
+paths in plugin state in a way transparent to the host.</p>
+
+<p>To create a new file, the plugin MUST request a path from the host using
+LV2_Files_New_File_Support::new_file_path().  Thus, the host may choose an
+appropriate location for the file (e.g. a writable path on the appropriate disk
+volume or a path within a session directory) using information not available to
+the plugin.</p>
+
+<p>To store a path in persistent state, the plugin MUST map it to an
+<q>abstract path</q> using LV2_Files_Path_Support::abstract_path().  To use a
+path loaded from persistent state, the plugin MUST map the (abstract) path to
+an absolute path using LV2_Files_Path_Support::absolute_path().  Thus, the host
+can manage all paths used in a session and support exporting sessions to a
+portable self-contained format for archival or distribution.</p> """ .
+
+files:pathSupport a lv2:Feature ;
+   rdfs:label "Support for storing file paths in plugin state" ;
+   lv2:documentation """
+<p>This feature allows plugins to refer to pre-existing or newly created files
+in persistent plugin state in a portable way.  To support this feature a host
+MUST pass a LV2_Files_Path_Support structure to the plugin's
+LV2_Descriptor::instantiate() method as an LV2_Feature with LV2_Feature::URI =
+LV2_FILES_PATH_SUPPORT_URI and LV2_Feature::data pointed to an instance of
+LV2_Files_Path_Support.</p>
+
+<p>Plugins MUST use the functions provided by this feature to handle
+<em>all</em> paths saved to, or restored from, persistent plugin state;
+otherwise broken and/or non-portable state will silently be created resulting
+in a broken user experience.</p>
+""" .
+
+files:newFileSupport a lv2:Feature ;
+   rdfs:label "Support for creating new files" ;
+   lv2:documentation """
+<p>This feature allows plugins to create new files local to that plugin
+instance.  To support this feature a host MUST pass a
+LV2_Files_New_File_Support structure to the plugin's
+LV2_Descriptor::instantiate() method as an LV2_Feature with LV2_Feature::URI =
+LV2_FILES_NEW_FILE_SUPPORT_URI and LV2_Feature::data pointed to an instance of
+LV2_Files_New_File_Support.</p>
+""" .
+
+files:AbstractPath a rdfs:Class ;
+    rdfs:label "File Path" ;
+    lv2:documentation """
+<p>An abstract path to a file in persistent plugin state.</p>
+
+<p>The format of a files:AbstractPath is a C string escaped or otherwise
+restricted in a system-specific manner.  This URI,
+<q>http://lv2plug.in/ns/ext/files#AbstractPath</q>, mapped to an integer,
+should be used as the <code>type</code> parameter to a
+LV2_Persist_Store_Function; and will likewise be returned by the corresponding
+call to a LV2_Persist_Retrieve_Function.</p>
+
+<p>Abstract paths reside in a namespace specific to a plugin instance.
+Typical hosts are expected to implement this by giving each plugin instance its
+own state directory.</p>
+
+<p>When storing and retrieving an abstract path, the plugin MUST NOT assume the
+same path will be restored.  However, the restored path will refer to a file
+with equivalent contents to the original.</p>
+""" .
diff --git a/ns/ext/files/manifest.ttl b/ns/ext/files/manifest.ttl
new file mode 100644
index 0000000..d0233c4
--- /dev/null
+++ b/ns/ext/files/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/files>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <files.ttl> .
+
diff --git a/ns/ext/files/waf b/ns/ext/files/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/files/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/files/wscript b/ns/ext/files/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/files/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/host-info/ext.pc.in b/ns/ext/host-info/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/host-info/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/host-info/host-info.ttl b/ns/ext/host-info/host-info.ttl
new file mode 100644
index 0000000..127f4cc
--- /dev/null
+++ b/ns/ext/host-info/host-info.ttl
@@ -0,0 +1,118 @@
+# LV2 Host Info Extension
+# PROVISIONAL
+# Copyright (C) 2009 David Robillard <d@drobilla.net>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix hi:   <http://lv2plug.in/ns/ext/host-info#> .
+@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 owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix amb:  <http://ambisonics.ch/standards/channels/> .
+
+<http://lv2plug.in/ns/ext/host-info> a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name    "LV2 Host Info" ;
+    doap:shortdesc "A format for describing LV2 hosts." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name     "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This specification defines various properties to represent useful information
+about LV2 hosts.  Currently, the primary use of this specification is to describe which
+extensions are supported by a given host.</p>
+
+<p>The extensions supported by a host can be described like this:</p>
+<pre class="turtle-code">
+@prefix hi: &lt;http://lv2plug.in/ns/ext/host-info#&gt; .
+
+&lt;http://example.org/some-host&gt;
+    a hi:Host ;
+    doap:name "Foo Rack" ;
+    hi:supportsExtension [
+        hi:extension &lt;http://example.org/some-extension&gt; ;
+        hi:sinceVersion "1.2.0"
+    ] .
+</pre>
+""" .
+
+
+## Core Classes / Properties
+
+hi:Host a rdfs:Class ;
+	rdfs:label "LV2 Host" ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     doap:name ;
+		owl:someValuesFrom xsd:string ;
+		owl:minCardinality 1 ;
+		rdfs:comment "A hi:Host MUST have at least one string doap:name"
+	] ;
+	rdfs:comment """
+An application that supports loading LV2 plugins, or performs other
+LV2 related functionality.
+""" .
+
+hi:supportsExtension a rdf:Property ;
+	rdfs:domain  hi:Host ;
+	rdfs:range   hi:ExtensionSupport ;
+	rdfs:label   "supports extension" ;
+	rdfs:comment "Relates a Host to its ExtensionSupport" .
+
+hi:ExtensionSupport a rdfs:Class ;
+	rdfs:label "Extension Support" ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     hi:sinceVersion ;
+		owl:someValuesFrom xsd:string ;
+		owl:minCardinality 1 ;
+		rdfs:comment """
+A hi:ExtensionSupport MUST have at least one string hi:sinceVersion
+""" ] ;
+	rdfs:comment "A description of the support for an extension by a Host" .
+
+hi:extension a rdf:Property ;
+	rdfs:domain  hi:ExtensionSupport ;
+	rdfs:range   lv2:Specification ;
+	rdfs:label   "extension" ;
+	rdfs:comment "Indicates the extension supported by a host." .
+
+hi:sinceVersion a rdf:Property ;
+	rdfs:domain  hi:ExtensionSupport ;
+	rdfs:range   xsd:string ;
+	rdfs:label   "since version" ;
+	rdfs:comment """
+The initial version of a host which supported an extension.
+This property MUST always be given
+""" .
+
+hi:untilVersion a rdf:Property ;
+	rdfs:domain  hi:ExtensionSupport ;
+	rdfs:range   xsd:string ;
+	rdfs:label   "until version" ;
+	rdfs:comment """
+The final version of a host which supported an extension.  This property can
+be used if support for an extension was discontinued in a host for some reason.
+""" .
+
diff --git a/ns/ext/host-info/manifest.ttl b/ns/ext/host-info/manifest.ttl
new file mode 100644
index 0000000..ae1e097
--- /dev/null
+++ b/ns/ext/host-info/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/host-info>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <host-info.ttl> .
+
diff --git a/ns/ext/host-info/waf b/ns/ext/host-info/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/host-info/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/host-info/wscript b/ns/ext/host-info/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/host-info/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/instance-access/ext.pc.in b/ns/ext/instance-access/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/instance-access/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/instance-access/instance-access.h b/ns/ext/instance-access/instance-access.h
new file mode 100644
index 0000000..7e18ee4
--- /dev/null
+++ b/ns/ext/instance-access/instance-access.h
@@ -0,0 +1,38 @@
+/*
+  LV2 Instance Access Extension
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_INSTANCE_ACCESS_H
+#define LV2_INSTANCE_ACCESS_H
+
+#define LV2_INSTANCE_ACCESS_URI "http://lv2plug.in/ns/ext/instance-access"
+
+
+/** @file
+ * C header for the LV2 Instance Access extension
+ * <http://lv2plug.in/ns/ext/instance-access>.
+ *
+ * This extension defines a method for (e.g.) plugin UIs to get a direct
+ * handle to an LV2 plugin instance (LV2_Handle), if possible.
+ *
+ * To support this feature the host must pass an LV2_Feature struct to the
+ * UI instantiate method with URI "http://lv2plug.in/ns/ext/instance-access"
+ * and data pointed directly to the LV2_Handle of the plugin instance.
+ */
+
+
+#endif /* LV2_INSTANCE_ACCESS_H */
+
diff --git a/ns/ext/instance-access/instance-access.ttl b/ns/ext/instance-access/instance-access.ttl
new file mode 100644
index 0000000..f3d1a42
--- /dev/null
+++ b/ns/ext/instance-access/instance-access.ttl
@@ -0,0 +1,80 @@
+# LV2 Instance Access Extension
+# Copyright 2008-2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix dcs:   <http://ontologi.es/doap-changeset#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@prefix ia:    <http://lv2plug.in/ns/ext/instance-access#> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/ext/instance-access>
+	a lv2:Specification ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 Instance Access" ;
+	doap:shortdesc "Provides access to the LV2_Handle of a plugin." ;
+	doap:developer <http://drobilla.net/drobilla#me> ;
+	doap:release [
+		doap:revision "1.4" ;
+		doap:created "2011-11-14" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-instance-access-1.4.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Update packaging."
+			] , [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "1.2" ;
+		doap:created "2011-05-26" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-instance-access-1.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Add build system for installation."
+			] , [
+				rdfs:label "Switch to ISC license."
+			]
+		]
+	] , [
+		doap:revision "1.0" ;
+		doap:created "2010-10-04" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-instance-access-1.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] ;
+	lv2:documentation """
+<p>This extension defines a feature which allows plugin UIs to get a direct
+handle to an LV2 plugin instance (LV2_Handle), if possible.</p>
+
+<p>To support this feature the host must pass an LV2_Feature struct to the UI
+instantiate method with URI "http://lv2plug.in/ns/ext/instance-access" and data
+pointed directly to the LV2_Handle of the plugin instance.</p>
+""" .
diff --git a/ns/ext/instance-access/manifest.ttl b/ns/ext/instance-access/manifest.ttl
new file mode 100644
index 0000000..d6412c5
--- /dev/null
+++ b/ns/ext/instance-access/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/instance-access>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 4 ;
+	rdfs:seeAlso <instance-access.ttl> .
+
diff --git a/ns/ext/instance-access/waf b/ns/ext/instance-access/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/instance-access/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/instance-access/wscript b/ns/ext/instance-access/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/instance-access/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/midi/ext.pc.in b/ns/ext/midi/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/midi/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/midi/manifest.ttl b/ns/ext/midi/manifest.ttl
new file mode 100644
index 0000000..a8e194e
--- /dev/null
+++ b/ns/ext/midi/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/midi>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 4 ;
+	rdfs:seeAlso <midi.ttl> .
+
diff --git a/ns/ext/midi/midi.ttl b/ns/ext/midi/midi.ttl
new file mode 100644
index 0000000..0b66f42
--- /dev/null
+++ b/ns/ext/midi/midi.ttl
@@ -0,0 +1,115 @@
+# LV2 MIDI Extension
+# Copyright 2008-2011 David Robillard <d@drobilla.net>
+# Copyright 2006 Lars Luthman <lars.luthman@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix dcs:  <http://ontologi.es/doap-changeset#> .
+@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix ev:   <http://lv2plug.in/ns/ext/event#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix midi: <http://lv2plug.in/ns/ext/midi#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+_:larsl
+	a foaf:Person ;
+	foaf:name "Lars Luthman" ;
+	foaf:mbox <mailto:lars.luthman@gmail.com> .
+
+<http://lv2plug.in/ns/ext/midi>
+	a lv2:Specification ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 MIDI" ;
+	doap:shortdesc "A data type for raw MIDI." ;
+	doap:maintainer <http://drobilla.net/drobilla#me> ;
+	doap:developer _:larsl ;
+	doap:release [
+		doap:revision "1.4" ;
+		doap:created "2011-11-14" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-midi-1.4.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Update packaging."
+			] , [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "1.2" ;
+		doap:created "2011-05-26" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-midi-1.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Add build system for installation."
+			] , [
+				rdfs:label "Switch to ISC license."
+			]
+		]
+	] , [
+		doap:revision "1.0" ;
+		doap:created "2010-10-04" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-midi-1.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] ;
+	lv2:documentation """
+<p>This extension defines a data type for a MIDI message, midi:MidiEvent, which
+is normalized for fast and convenient processing by plugins.  It is
+particularly useful as the payload of an <a
+href="http://lv2plug.in/ns/ext/atom#Atom">Atom</a> or <a
+href="http://lv2plug.in/ns/ext/event#Event">Event</a>.</p>
+""" .
+
+midi:MidiEvent
+	a rdfs:Class ;
+	rdfs:label "LV2 MIDI message." ;
+	rdfs:subClassOf ev:Event ,
+		atom:Atom ;
+	lv2:documentation """
+<p>A single raw MIDI message (i.e. a sequence of bytes).</p>
+
+<p>This is equivalent to a standard MIDI messages, except with the following
+restrictions to simplify handling:</p>
+<ul>
+  <li>Running status is not allowed, every message must have its own status
+  byte.</li>
+
+  <li>Note On messages with velocity 0 are not allowed.  These messages are
+  equivalent to Note Off in standard MIDI streams, but here only proper Note
+  Off messages are allowed.</li>
+
+  <li>"Realtime messages" (status bytes 0xF8 to 0xFF) are allowed, but may
+  not occur inside other messages like they can in standard MIDI streams.</li>
+
+  <li>All messages are complete valid MIDI messages.  This means, for example,
+  that only the first byte in each event (the status byte) may have the eighth
+  bit set, that Note On and Note Off events are always 3 bytes long, etc.
+  Where messages are communicated, the writer is responsible for writing valid
+  messages, and the reader may assume that all events are valid.</li>
+</ul>
+""" .
diff --git a/ns/ext/midi/waf b/ns/ext/midi/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/midi/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/midi/wscript b/ns/ext/midi/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/midi/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/osc/ext.pc.in b/ns/ext/osc/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/osc/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/osc/lv2_osc.c b/ns/ext/osc/lv2_osc.c
new file mode 100644
index 0000000..afea2c9
--- /dev/null
+++ b/ns/ext/osc/lv2_osc.c
@@ -0,0 +1,238 @@
+/* LV2 OSC Messages Extension
+ * Copyright (C) 2007-2009 David Robillard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "lv2_osc.h"
+#include "lv2_osc_print.h"
+
+/*#ifndef BIG_ENDIAN
+  #ifndef LITTLE_ENDIAN
+    #warning This code requires BIG_ENDIAN or LITTLE_ENDIAN to be defined
+    #warning Assuming little endian.  THIS MAY BREAK HORRIBLY!
+  #endif
+#endif*/
+
+#define lv2_osc_swap32(x) \
+({ \
+    uint32_t __x = (x); \
+    ((uint32_t)( \
+    (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
+    (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) <<  8) | \
+    (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >>  8) | \
+    (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
+})
+
+#define lv2_osc_swap64(x) \
+({ \
+    uint64_t __x = (x); \
+    ((uint64_t)( \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) <<  8) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >>  8) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
+	(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
+})
+
+
+/** Pad a size to a multiple of 32 bits */
+inline static uint32_t
+lv2_osc_pad_size(uint32_t size)
+{
+	return size + 3 - ((size-1) % 4);
+}
+
+
+inline static uint32_t
+lv2_osc_string_size(const char *s)
+{
+    return lv2_osc_pad_size((uint32_t)strlen(s) + 1);
+}
+
+
+static inline uint32_t
+lv2_osc_blob_size(const void* blob)
+{
+    return sizeof(uint32_t) + lv2_osc_pad_size(*((uint32_t*)blob));
+}
+
+
+uint32_t
+lv2_osc_arg_size(char type, const LV2_OSC_Argument* arg)
+{
+    switch (type) {
+	case 'c':
+	case 'i':
+	case 'f':
+    case 'S': // Symbol (URI-mapped integer)
+		return 4;
+
+	case 'h':
+	case 'd':
+		return 8;
+
+	case 's':
+		return lv2_osc_string_size(&arg->s);
+
+	case 'b':
+		return lv2_osc_blob_size(&arg->b);
+
+	default:
+		fprintf(stderr, "Warning: unknown OSC type '%c'.", type);
+		return 0;
+    }
+}
+
+
+void
+lv2_osc_argument_swap_byte_order(char type, LV2_OSC_Argument* arg)
+{
+    switch (type) {
+	case 'i':
+	case 'f':
+	case 'b':
+	case 'c':
+		*(int32_t*)arg = lv2_osc_swap32(*(int32_t*)arg);
+		break;
+
+	case 'h':
+	case 'd':
+		*(int64_t*)arg = lv2_osc_swap64(*(int64_t*)arg);
+		break;
+	}
+}
+
+
+/** Convert a message from network byte order to host byte order. */
+void
+lv2_osc_message_swap_byte_order(LV2_OSC_Event* msg)
+{
+	const char* const types = lv2_osc_get_types(msg);
+
+	for (uint32_t i=0; i < msg->argument_count; ++i)
+		lv2_osc_argument_swap_byte_order(types[i], lv2_osc_get_argument(msg, i));
+}
+
+
+/** Not realtime safe, returned value must be free()'d by caller. */
+LV2_OSC_Event*
+lv2_osc_message_new(const char* path, const char* types, ...)
+{
+	/* FIXME: path only */
+
+	LV2_OSC_Event* result = malloc(sizeof(LV2_OSC_Event)
+			+ 4 + lv2_osc_string_size(path));
+
+	const uint32_t path_size = lv2_osc_string_size(path);
+	result->data_size = path_size + 4; // 4 for types
+	result->argument_count = 0;
+	result->types_offset = lv2_osc_string_size(path) + 1;
+	(&result->data)[result->types_offset - 1] = ',';
+	(&result->data)[result->types_offset] = '\0';
+
+	memcpy(&result->data, path, strlen(path) + 1);
+
+	return result;
+}
+
+
+/** Create a new LV2_OSC_Event from a raw OSC message.
+ *
+ * If \a out_buf is NULL, new memory will be allocated.  Otherwise the returned
+ * value will be equal to buf, unless there is insufficient space in which
+ * case NULL is returned.
+ */
+LV2_OSC_Event*
+lv2_osc_message_from_raw(uint32_t out_buf_size,
+                         void*    out_buf,
+                         uint32_t raw_msg_size,
+                         void*    raw_msg)
+{
+	const uint32_t message_header_size = (sizeof(uint32_t) * 4);
+
+	const uint32_t path_size  = lv2_osc_string_size((char*)raw_msg);
+	const uint32_t types_len  = strlen((char*)(raw_msg + path_size + 1));
+	uint32_t       index_size = types_len * sizeof(uint32_t);
+
+	if (out_buf == NULL) {
+		out_buf_size = message_header_size + index_size + raw_msg_size;
+		out_buf = malloc((size_t)out_buf_size);
+	} else if (out_buf && out_buf_size < message_header_size + raw_msg_size) {
+		return NULL;
+	}
+
+	LV2_OSC_Event* write_loc = (LV2_OSC_Event*)(out_buf);
+	write_loc->argument_count = types_len;
+	write_loc->data_size = index_size + raw_msg_size;
+
+	// Copy raw message
+	memcpy(&write_loc->data + index_size, raw_msg, raw_msg_size);
+
+	write_loc->types_offset = index_size + path_size + 1;
+	const char* const types = lv2_osc_get_types(write_loc);
+
+	// Calculate/Write index
+	uint32_t args_base_offset = write_loc->types_offset + lv2_osc_string_size(types) - 1;
+	uint32_t arg_offset = 0;
+
+	for (uint32_t i=0; i < write_loc->argument_count; ++i) {
+		((uint32_t*)&write_loc->data)[i] = args_base_offset + arg_offset;
+		const LV2_OSC_Argument* const arg = (LV2_OSC_Argument*)(&write_loc->data + args_base_offset + arg_offset);
+		// Special case because size is still big-endian
+#ifndef BIG_ENDIAN
+		if (types[i] == 'b') // special case because size is still big-endian
+			arg_offset += lv2_osc_swap32(*((int32_t*)arg));
+		else
+#endif
+			arg_offset += lv2_osc_arg_size(types[i], arg);
+	}
+
+	/*printf("Index:\n");
+	for (uint32_t i=0; i < write_loc->argument_count; ++i) {
+		printf("%u ", ((uint32_t*)&write_loc->data)[i]);
+	}
+	printf("\n");
+
+	printf("Data:\n");
+	for (uint32_t i=0; i < (write_loc->argument_count * 4) + size; ++i) {
+		printf("%3u", i % 10);
+	}
+	printf("\n");
+	for (uint32_t i=0; i < (write_loc->argument_count * 4) + size; ++i) {
+		char c = *(((char*)&write_loc->data) + i);
+		if (c >= 32 && c <= 126)
+			printf("%3c", c);
+		else
+			printf("%3d", (int)c);
+	}
+	printf("\n");*/
+
+	// Swap to host byte order if necessary
+#ifndef BIG_ENDIAN
+	lv2_osc_message_swap_byte_order(write_loc);
+#endif
+
+	printf("Created message:\n");
+	lv2_osc_message_print(write_loc);
+
+	return write_loc;
+}
diff --git a/ns/ext/osc/lv2_osc_print.c b/ns/ext/osc/lv2_osc_print.c
new file mode 100644
index 0000000..5282d46
--- /dev/null
+++ b/ns/ext/osc/lv2_osc_print.c
@@ -0,0 +1,66 @@
+/* LV2 OSC Messages Extension - Pretty printing methods
+ * Copyright (C) 2007-2009 David Robillard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include "lv2_osc_print.h"
+
+void
+lv2_osc_argument_print(char type, const LV2_OSC_Argument* arg)
+{
+	int32_t blob_size;
+
+    switch (type) {
+	case 'c':
+		printf("%c", arg->c); break;
+	case 'i':
+		printf("%d", arg->i); break;
+	case 'f':
+		printf("%f", arg->f); break;
+	case 'h':
+		printf("%ld", arg->h); break;
+	case 'd':
+		printf("%f", arg->d); break;
+	case 's':
+		printf("\"%s\"", &arg->s); break;
+	/*case 'S':
+		printf("\"%s\"", &arg->S); break;*/
+	case 'b':
+		blob_size = *((int32_t*)arg);
+		printf("{ ");
+		for (int32_t i=0; i < blob_size; ++i)
+			printf("%X, ", (&arg->b)[i+4]);
+		printf(" }");
+		break;
+	default:
+		printf("?");
+	}
+}
+
+
+void
+lv2_osc_print(const LV2_OSC_Event* msg)
+{
+	const char* const types = lv2_osc_get_types(msg);
+
+	printf("%s (%s) ", lv2_osc_get_path(msg), types);
+	for (uint32_t i=0; i < msg->argument_count; ++i) {
+		lv2_osc_argument_print(types[i], lv2_osc_get_argument(msg, i));
+		printf(" ");
+	}
+	printf("\n");
+}
+
diff --git a/ns/ext/osc/lv2_osc_test.c b/ns/ext/osc/lv2_osc_test.c
new file mode 100644
index 0000000..3f76d41
--- /dev/null
+++ b/ns/ext/osc/lv2_osc_test.c
@@ -0,0 +1,55 @@
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <lo/lo.h>
+#include "lv2_osc.h"
+#include "lv2_osc_print.h"
+
+int
+main()
+{
+	lo_message lo_msg = lo_message_new();
+	//lo_message_add_symbol(lo_msg, "a_sym");
+	lo_message_add_string(lo_msg, "Hello World");
+	lo_message_add_char(lo_msg, 'a');
+	lo_message_add_int32(lo_msg, 1234);
+	lo_message_add_float(lo_msg, 0.1234);
+	lo_message_add_int64(lo_msg, 5678);
+	lo_message_add_double(lo_msg, 0.5678);
+
+
+	/*unsigned char blob_data[] = { 0,1,2,3,4,5,6,7,8,9 };
+	lo_blob blob = lo_blob_new(10, blob_data);
+	lo_message_add_blob(lo_msg, blob);*/
+
+	/* Leaks like a sieve */
+
+	size_t raw_msg_size = 0;
+	void* raw_msg = lo_message_serialise(lo_msg, "/foo/bar", NULL, &raw_msg_size);
+
+	LV2Message* msg = lv2_osc_message_from_raw(0.0, 0, NULL, raw_msg_size, raw_msg);
+	assert(msg);
+
+	LV2OSCBuffer* buf = lv2_osc_buffer_new(1024);
+
+	int ret = lv2_osc_buffer_append_message(buf, msg);
+	if (ret)
+		fprintf(stderr, "Message append failed: %s", strerror(ret));
+
+	lo_message lo_msg_2 = lo_message_new();
+	lo_message_add_string(lo_msg_2, "Another message");
+
+	raw_msg = lo_message_serialise(lo_msg_2, "/baz", NULL, &raw_msg_size);
+
+	msg = lv2_osc_message_from_raw(0.0, 0, NULL, raw_msg_size, raw_msg);
+	assert(msg);
+
+	ret = lv2_osc_buffer_append_message(buf, msg);
+	if (ret)
+		fprintf(stderr, "Message append failed: %s", strerror(ret));
+
+	printf("\nBuffer contents:\n\n");
+	lv2_osc_buffer_print(buf);
+
+	return 0;
+}
diff --git a/ns/ext/osc/manifest.ttl b/ns/ext/osc/manifest.ttl
new file mode 100644
index 0000000..7209b05
--- /dev/null
+++ b/ns/ext/osc/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/osc>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <osc.ttl> .
+
diff --git a/ns/ext/osc/osc-print.h b/ns/ext/osc/osc-print.h
new file mode 100644
index 0000000..ceebbf7
--- /dev/null
+++ b/ns/ext/osc/osc-print.h
@@ -0,0 +1,42 @@
+/* LV2 OSC Messages Extension - Pretty printing methods
+ * Copyright (C) 2007-2009 David Robillard
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file
+ * Helper functions for printing LV2 OSC messages as defined by the
+ * LV2 OSC extension <http://lv2plug.in/ns/ext/osc>.
+ */
+
+#ifndef LV2_OSC_PRINT_H
+#define LV2_OSC_PRINT_H
+
+#include "lv2/lv2plug.in/ns/ext/osc/osc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void
+lv2_osc_argument_print(char type, const LV2_OSC_Argument* arg);
+
+void
+lv2_osc_message_print(const LV2_OSC_Event* msg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_OSC_PRINT_H */
diff --git a/ns/ext/osc/osc.h b/ns/ext/osc/osc.h
new file mode 100644
index 0000000..05e39cc
--- /dev/null
+++ b/ns/ext/osc/osc.h
@@ -0,0 +1,119 @@
+/* LV2 OSC Messages Extension
+ * Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This header 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 General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LV2_OSC_H
+#define LV2_OSC_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @file
+ * C header for the LV2 OSC extension <http://lv2plug.in/ns/ext/osc>.
+ * This extension defines a format for (raw) OSC messages/events.
+ */
+
+
+/** Argument (in a message).
+ *
+ * The name of the element in this union directly corresponds to the OSC
+ * type tag character in LV2_Event::types.
+ */
+typedef union {
+	/* Standard OSC types */
+	int32_t i; /**< 32 bit signed integer */
+	float   f; /**< 32 bit IEEE-754 floating point number ("float") */
+	char    s; /**< Standard C, NULL terminated string */
+	uint8_t b; /**< Blob (int32 size then size bytes padded to 32 bits) */
+
+	/* "Nonstandard" OSC types (defined in the OSC standard) */
+	int64_t h; /* 64 bit signed integer */
+	// t       /* OSC-timetag */
+	double  d; /* 64 bit IEEE 754 floating point number ("double") */
+	// S       /* Symbol, represented as an OSC-string */
+	int32_t c; /* Character, represented as a 32-bit integer */
+	// r  /* 32 bit RGBA color */
+	// m  /* 4 byte MIDI message. Bytes from MSB to LSB are: port id, status byte, data1, data2 */
+	// T  /* True. No bytes are allocated in the argument data. */
+	// F  /* False. No bytes are allocated in the argument data. */
+	// N  /* Nil. No bytes are allocated in the argument data. */
+	// I  /* Infinitum. No bytes are allocated in the argument data. */
+	// [  /* The beginning of an array. */
+	// ]  /* The end of an array. */
+} LV2_OSC_Argument;
+
+
+
+/** Message.
+ *
+ * This is an OSC message at heart, but with some additional cache information
+ * to allow fast access to parameters.  This is the payload of an LV2_Event,
+ * time stamp and size (being generic) are in the containing header.
+ */
+typedef struct {
+	uint32_t data_size;      /**< Total size of data, in bytes */
+	uint32_t argument_count; /**< Number of arguments in data */
+	uint32_t types_offset;   /**< Offset of types string in data */
+
+	/** Take the address of this member to get a pointer to the remaining data.
+	 *
+	 * Contents are an argument index:
+	 * uint32_t argument_index[argument_count]
+	 *
+	 * followed by a standard OSC message:
+	 * char     path[path_length]     (padded OSC string)
+	 * char     types[argument_count] (padded OSC string)
+	 * void     data[data_size]
+	 */
+	char data;
+
+} LV2_OSC_Event;
+
+LV2_OSC_Event* lv2_osc_event_new(const char* path, const char* types, ...);
+
+LV2_OSC_Event* lv2_osc_event_from_raw(uint32_t out_buf_size, void* out_buf,
+                                      uint32_t raw_msg_size, void* raw_msg);
+
+static inline uint32_t lv2_osc_get_osc_message_size(const LV2_OSC_Event* msg)
+	{ return (msg->argument_count * sizeof(char) + 1) + msg->data_size; }
+
+static inline const void* lv2_osc_get_osc_message(const LV2_OSC_Event* msg)
+	{ return (const void*)(&msg->data + (sizeof(uint32_t) * msg->argument_count)); }
+
+static inline const char* lv2_osc_get_path(const LV2_OSC_Event* msg)
+	{ return (const char*)(&msg->data + (sizeof(uint32_t) * msg->argument_count)); }
+
+static inline const char* lv2_osc_get_types(const LV2_OSC_Event* msg)
+	{ return (const char*)(&msg->data + msg->types_offset); }
+
+static inline LV2_OSC_Argument* lv2_osc_get_argument(const LV2_OSC_Event* msg, uint32_t i)
+	{ return (LV2_OSC_Argument*)(&msg->data + ((uint32_t*)&msg->data)[i]); }
+
+/*
+int lv2_osc_buffer_append_message(LV2_Event_Buffer* buf, LV2_Event* msg);
+int lv2_osc_buffer_append(LV2_Event_Buffer* buf, double time, const char* path, const char* types, ...);
+void lv2_osc_buffer_compact(LV2_Event_Buffer* buf);
+*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_OSC_H */
diff --git a/ns/ext/osc/osc.ttl b/ns/ext/osc/osc.ttl
new file mode 100644
index 0000000..c83a69d
--- /dev/null
+++ b/ns/ext/osc/osc.ttl
@@ -0,0 +1,39 @@
+# LV2 OSC Messages Extension
+# Copyright (C) 2007 David Robillard <d@drobilla.net>
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix osc:  <http://lv2plug.in/ns/ext/osc#> .
+@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 xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/osc> a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name "LV2 OSC Events" ;
+	doap:shortdesc "A data type for raw OSC." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.xrdf>
+	] .
diff --git a/ns/ext/osc/waf b/ns/ext/osc/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/osc/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/osc/wscript b/ns/ext/osc/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/osc/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/parameter/ext.pc.in b/ns/ext/parameter/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/parameter/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/parameter/manifest.ttl b/ns/ext/parameter/manifest.ttl
new file mode 100644
index 0000000..d7af7ff
--- /dev/null
+++ b/ns/ext/parameter/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/parameter>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <parameter.ttl> .
+
diff --git a/ns/ext/parameter/parameter.ttl b/ns/ext/parameter/parameter.ttl
new file mode 100644
index 0000000..191aa81
--- /dev/null
+++ b/ns/ext/parameter/parameter.ttl
@@ -0,0 +1,111 @@
+# LV2 Parameter Extension
+# Copyright (C) 2010 David Robillard <d@drobilla.net>
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix atom:  <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix param: <http://lv2plug.in/ns/ext/parameter#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/parameter>
+	a lv2:Specification ;
+    doap:name "LV2 Parameter" ;
+    doap:shortdesc "Dynamic message-controlled LV2 plugin parameters." ;
+    doap:maintainer [
+        a foaf:Person ;
+        foaf:name     "David Robillard" ;
+        foaf:homepage <http://drobilla.net/> ;
+        rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+    ] ;
+	rdfs:comment """
+""" .
+
+
+param:Parameter a rdfs:Class ; a lv2:Resource ;
+    rdfs:label   "Parameter" ;
+    lv2:documentation """
+<p>A parameter on an LV2 plugin.  Parameters can be manipulated to alter
+the behaviour or output of a plugin.  Unlike lv2:ControlPort:</p>
+<ul>
+<li>A parameter may have any data type</li>
+<li>Parameters can be dynamically added or removed</li>
+<li>Parameter values can be manipulated by the plugin</li>
+</ul>
+
+<p>Note that plugins are not required to support this potential functionality,
+parameters can be used to provide a basic LADSPA-like set of floating point
+parameters in a more extensible manner.</p>
+
+<p>Parameters are essentially controls that are not 1:1 associated with ports
+(manipulation of parameters can be accomplished by e.g. sending messages
+to a command port).</p>
+""" .
+
+
+param:supportsType a rdf:Property ;
+    rdfs:domain  param:Parameter ;
+    rdfs:range   atom:AtomType ;
+    rdfs:label   "supports type" ;
+    lv2:documentation """
+<p>Indicates that a Parameter has values of a particular type.  A Parameter may
+support many types.  Parameter values are always LV2 Atoms as defined by the <a
+href="http://lv2plug.in/ns/ext/atom">LV2 Atom</a> Extension Any type of LV2
+Atom may be used as a parameter value.</p>
+""" .
+
+
+param:value a rdf:Property ;
+	rdfs:domain param:Parameter ;
+	rdfs:label "value" ;
+	rdfs:comment """
+Indicates that a Parameter has a certain value.  A Parameter has at most
+one value at any given time.  The type of the value specified must be
+one of the types specified by param:supportsType.  When used in a plugin
+data file this property specifies the default value of a parameter.
+""" .
+
+
+param:minimum a rdf:Property ;
+	rdfs:domain param:Parameter ;
+	rdfs:label "minimum" ;
+	rdfs:comment """
+Specifies the minimum value of a Parameter (for Parameters with comparable
+types for which this makes sense).  The type of the minimum must be one of
+the types specified by param:supportsType.  The host MAY attempt to set a
+parameter to any value (of a legal type), i.e. the plugin MUST NOT assume
+attempts to change a parameter are within range and SHOULD clamp accordingly.
+""" .
+
+
+param:maximum a rdf:Property ;
+	rdfs:domain param:Parameter ;
+	rdfs:label "maximum" ;
+	rdfs:comment """
+Specifies the maximum value of a Parameter (for Parameters with comparable
+types for which this makes sense).  The type of the maximum must be one of
+the types specified by param:supportsType.  The host MAY attempt to set a
+parameter to any value (of a legal type), i.e. the plugin MUST NOT assume
+attempts to change a parameter are within range and SHOULD clamp accordingly.
+""" .
+
diff --git a/ns/ext/parameter/waf b/ns/ext/parameter/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/parameter/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/parameter/wscript b/ns/ext/parameter/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/parameter/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/port-groups/ext.pc.in b/ns/ext/port-groups/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/port-groups/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/port-groups/manifest.ttl b/ns/ext/port-groups/manifest.ttl
new file mode 100644
index 0000000..ff4205b
--- /dev/null
+++ b/ns/ext/port-groups/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/port-groups>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <port-groups.ttl> .
+
diff --git a/ns/ext/port-groups/port-groups.ttl b/ns/ext/port-groups/port-groups.ttl
new file mode 100644
index 0000000..b584a25
--- /dev/null
+++ b/ns/ext/port-groups/port-groups.ttl
@@ -0,0 +1,490 @@
+# LV2 Port Groups Extension
+# PROVISIONAL
+# Copyright (C) 2009 David Robillard <d@drobilla.net>
+# Copyright (C) 2008-2009 Lars Luthman <lars.luthman@gmail.com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix pg:   <http://lv2plug.in/ns/ext/port-groups#> .
+@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 owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix amb:  <http://ambisonics.ch/standards/channels/> .
+
+<http://lv2plug.in/ns/ext/port-groups> a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name    "LV2 Port Groups" ;
+	doap:shortdesc "Multi-channel groups of LV2 ports." ;
+	rdfs:comment "Defines semantic groupings of LV2 ports" ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "Lars Luthman" ;
+		foaf:mbox <mailto:lars.luthman@gmail.com>
+	] , [
+		a foaf:Person ;
+		foaf:name     "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+	] .
+
+
+## Core Classes / Properties
+
+pg:Group a rdfs:Class ;
+	rdfs:label "LV2 Port Group" ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     lv2:symbol ;
+		owl:someValuesFrom xsd:string ;
+		owl:cardinality    1 ;
+        rdfs:comment   """
+A pg:Group MUST have exactly one string lv2:symbol.  This symbol must be
+unique according to the same rules as the lv2:symbol for an lv2:Port, where
+group symbols and port symbols reside in the same namespace.  In other words,
+a group on a plugin MUST NOT have the same symbol as another group or a port
+on that plugin.  Rationale: Hosts or bindings may find it useful to construct
+an identifier to refer to groups for the same reasons this is useful for ports.
+"""
+	] ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     pg:hasRole ;
+		owl:someValuesFrom pg:RoleAssignment ;
+		owl:minCardinality 1 ;
+        rdfs:comment   "A Group MUST have at least one role assignment"
+	] ;
+	rdfs:comment """
+A grouping of ports that can be logically considered a single "stream", e.g.
+two audio ports in a group may form a stereo stream.  The pg:source predicate
+can also be used to describe this correspondence between separate ports/groups.
+""" .
+
+pg:index a rdf:Property ;
+    rdfs:domain  pg:RoleAssignment ;
+    rdfs:range   xsd:nonNegativeInteger ;
+    rdfs:label   "index" ;
+    rdfs:comment "Index of a role within some group" .
+
+pg:RoleAssignment a rdfs:Class ;
+	rdfs:label "Role Assignment" ;
+	rdfs:comment "A numbered role within some Group." ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     pg:index ;
+		owl:cardinality    1 ;
+        rdfs:comment """
+A RoleAssignment MUST have exactly one index.
+""" ] ;
+	rdfs:subClassOf [ a owl:Restriction ;
+		owl:onProperty     pg:role ;
+		owl:cardinality    1 ;
+        rdfs:comment """
+A RoleAssignment MUST have exactly one role.
+""" ] ;
+    rdfs:comment """
+All group definitions MUST define the order of channels.  Note that this
+does not have anything to do with port indices, this information is only
+defined here for use by other extensions.  For simply assigning groups
+and roles to a basic LV2 plugin, index is irrelevant.
+""" .
+
+pg:hasChannel a rdf:Property ;
+	rdfs:domain  pg:Group ;
+	rdfs:range   pg:Channel ;
+	rdfs:label   "Has port with role" ;
+	rdfs:comment """
+Indicates that a group always has a port with a particular role.
+""" .
+
+pg:sideChainOf a rdf:Property ;
+	rdfs:domain  pg:Group , lv2:Port ;
+	rdfs:range   pg:Group , lv2:Port ;
+	rdfs:label   "Side-chain of" ;
+	rdfs:comment """
+Indicates that this port or group should be considered a "side chain" of
+some other port or group.  The precise definition of "side chain" depends
+on the plugin, but in general this group should be considered a modifier to
+some other group, rather than an independent input itself.
+""" .
+
+pg:subGroupOf a rdf:Property ;
+	rdfs:domain  pg:Group ;
+	rdfs:range   pg:Group ;
+	rdfs:label   "Sub-group of" ;
+	rdfs:comment """
+Indicates that this group is a child of another group.  This property has
+no meaning with respect to plugin execution, but the host may find this
+information useful (e.g. to provide a compact user interface).  Note that
+all groups on a plugin MUST have a unique symbol with respect to the plugin
+as documented for pg:Group, i.e. sub-groups must have a unique symbol among
+all groups and ports on the plugin.
+""" .
+
+pg:source a rdf:Property ;
+	rdfs:domain  pg:Group , lv2:Port ;
+	rdfs:range   pg:Group , lv2:Port ;
+	rdfs:label   "Source group" ;
+	rdfs:comment """
+Indicates that this port or group should be considered the "result" of
+some other port or group.  This property only makes sense on groups with
+outputs when the source is a group with inputs.  This can be used to convey
+a relationship between corresponding input and output groups with different
+types, e.g.  a mono->stereo plugin.
+""" .
+
+pg:mainGroup a rdf:Property ;
+	rdfs:domain  lv2:Plugin ;
+	rdfs:range   pg:Group ;
+	rdfs:label   "Main port group" ;
+	rdfs:comment """
+Indicates that this group should be considered the "main" inputs/outputs of
+the plugin, e.g. it probably makes sense to just connect main groups and set
+some controls.  A plugin MUST NOT have more than one :mainGroup property.
+High-level hosts that simply want to insert an plugin in a given stream
+should use this property to determine where the plugin 'fits'.
+""" .
+
+pg:inGroup a rdf:Property ;
+	rdfs:domain  lv2:Port ;
+	rdfs:range   pg:Group ;
+	rdfs:label   "In port group" ;
+	rdfs:comment """
+Indicates that this port is a part of a group of ports on the plugin.
+Ports that have a meaningful "role" that may be useful to hosts SHOULD also
+have a :role property, otherwise ports in the group have no meaningful order.
+""" .
+
+pg:Role a rdfs:Class ;
+	rdfs:label   "Port role" ;
+	rdfs:comment """
+The role of a port with respect to its plugin or group.  If the port is a
+member of a group (has an :inGroup property) the role is relevant with respect
+to that group.  Otherwise the role is relevant with respect to the plugin.
+""" .
+
+pg:role a rdf:Property ;
+	rdfs:domain  pg:Port , pg:RoleAssignment;
+	rdfs:range   pg:Role ;
+	rdfs:label   "Role" ;
+	rdfs:comment """
+Indicates that this port has a particular role with respect to its enclosing
+plugin or group (whichever is smaller).  A port may have several roles if it
+makes sense to do so (though some Role or Group definition may forbid this).
+""" .
+
+
+# Discrete
+
+pg:DiscreteGroup a rdfs:Class ;
+	rdfs:subClassOf pg:Group ;
+	rdfs:comment """
+"Discrete" channel configurations.  These groups are divided into channels
+where each represents a particular speaker location.  The position of sound
+in one of these groups depends on a particular speaker configuration.
+""" .
+
+pg:leftChannel        a pg:Role ; rdfs:label "Left" .
+pg:rightChannel       a pg:Role ; rdfs:label "Right" .
+pg:centerChannel      a pg:Role ; rdfs:label "Center" .
+pg:sideChannel        a pg:Role ; rdfs:label "Side" .
+pg:centerLeftChannel  a pg:Role ; rdfs:label "Center Left" .
+pg:centerRightChannel a pg:Role ; rdfs:label "Center Right" .
+pg:sideLeftChannel    a pg:Role ; rdfs:label "Side Left" .
+pg:sideRightChannel   a pg:Role ; rdfs:label "Side Right" .
+pg:rearLeftChannel    a pg:Role ; rdfs:label "Rear Left" .
+pg:rearRightChannel   a pg:Role ; rdfs:label "Rear Right" .
+pg:rearCenterChannel  a pg:Role ; rdfs:label "Rear Center" .
+pg:lfeChannel         a pg:Role ; rdfs:label "Sub (LFE)" .
+
+pg:MonoGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "Mono" ;
+	pg:hasRole [ pg:index 0; pg:role pg:centerChannel ] .
+
+pg:StereoGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "Stereo" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:rightChannel ] .
+
+pg:MidSideGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "Mid-Side Stereo" ;
+	pg:hasRole [ pg:index 0; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:sideChannel ] .
+
+pg:ThreePointZeroGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "3.0 Surround" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rearCenterChannel ] .
+
+pg:FourPointZeroGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "4.0 Surround (Quadraphonic)" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:rearCenterChannel ] .
+
+pg:FivePointZeroGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "5.0 Surround (3-2 stereo)" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:rearLeftChannel ] ;
+	pg:hasRole [ pg:index 4; pg:role pg:rearRightChannel ] .
+
+pg:FivePointOneGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "5.1 Surround (3-2 stereo)" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:rearLeftChannel ] ;
+	pg:hasRole [ pg:index 4; pg:role pg:rearRightChannel ] ;
+	pg:hasRole [ pg:index 5; pg:role pg:lfeChannel ] .
+
+pg:SixPointOneGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "6.1 Surround" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:sideLeftChannel ] ;
+	pg:hasRole [ pg:index 4; pg:role pg:sideRightChannel ] ;
+	pg:hasRole [ pg:index 5; pg:role pg:rearCenterChannel ] ;
+	pg:hasRole [ pg:index 6; pg:role pg:lfeChannel ] .
+
+pg:SevenPointOneGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "7.1 Surround" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:sideLeftChannel ] ;
+	pg:hasRole [ pg:index 4; pg:role pg:sideRightChannel ] ;
+	pg:hasRole [ pg:index 5; pg:role pg:rearLeftChannel ] ;
+	pg:hasRole [ pg:index 6; pg:role pg:rearRightChannel ] ;
+	pg:hasRole [ pg:index 7; pg:role pg:lfeChannel ] .
+
+pg:SevenPointOneWideGroup a rdfs:Class ;
+	rdfs:subClassOf pg:DiscreteGroup ;
+	rdfs:label "7.1 Surround (Wide)" ;
+	pg:hasRole [ pg:index 0; pg:role pg:leftChannel ] ;
+	pg:hasRole [ pg:index 1; pg:role pg:centerLeftChannel ] ;
+	pg:hasRole [ pg:index 2; pg:role pg:centerChannel ] ;
+	pg:hasRole [ pg:index 3; pg:role pg:centerRightChannel ] ;
+	pg:hasRole [ pg:index 4; pg:role pg:rightChannel ] ;
+	pg:hasRole [ pg:index 5; pg:role pg:leftRearChannel ] ;
+	pg:hasRole [ pg:index 6; pg:role pg:rightRearChannel ] ;
+	pg:hasRole [ pg:index 7; pg:role pg:lfeChannel ] .
+
+
+# Ambisonic
+
+pg:AmbisonicGroup a rdfs:Class ;
+	rdfs:subClassOf pg:Group ;
+	rdfs:comment """
+"Ambisonic" channel configurations.  These groups are divided into channels
+which together represent a position in an abstract n-dimensional space.
+The position of sound in one of these groups does not depend on a particular
+speaker configuration; a decoder can be used to convert an ambisonic stream
+for any speaker configuration.
+""" .
+
+#amb:ACN0  a pg:Role ; rdfs:label "ACN 0 (W)" .
+#amb:ACN1  a pg:Role ; rdfs:label "ACN 1 (Y)" .
+#amb:ACN2  a pg:Role ; rdfs:label "ACN 2 (Z)" .
+#amb:ACN3  a pg:Role ; rdfs:label "ACN 3 (X)" .
+#amb:ACN4  a pg:Role ; rdfs:label "ACN 4 (V)" .
+#amb:ACN5  a pg:Role ; rdfs:label "ACN 5 (T)" .
+#amb:ACN6  a pg:Role ; rdfs:label "ACN 6 (R)" .
+#amb:ACN7  a pg:Role ; rdfs:label "ACN 7 (S)" .
+#amb:ACN8  a pg:Role ; rdfs:label "ACN 8 (U)" .
+#amb:ACN9  a pg:Role ; rdfs:label "ACN 9 (Q)" .
+#amb:ACN10 a pg:Role ; rdfs:label "ACN 10 (O)" .
+#amb:ACN11 a pg:Role ; rdfs:label "ACN 11 (M)" .
+#amb:ACN12 a pg:Role ; rdfs:label "ACN 12 (K)" .
+#amb:ACN13 a pg:Role ; rdfs:label "ACN 13 (L)" .
+#amb:ACN14 a pg:Role ; rdfs:label "ACN 14 (N)" .
+#amb:ACN15 a pg:Role ; rdfs:label "ACN 15 (P)" .
+
+pg:AmbisonicBH1P0Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 1 and peripheral order 0." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN3 ] .
+
+pg:AmbisonicBH1P1Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 1 and peripheral order 1." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN3 ] .
+
+pg:AmbisonicBH2P0Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 2 and peripheral order 0." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 4; pg:role amb:ACN8 ] .
+
+pg:AmbisonicBH2P1Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 2 and peripheral order 1." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 4; pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 5; pg:role amb:ACN8 ] .
+
+pg:AmbisonicBH2P2Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 2 and peripheral order 2." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 4; pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 5; pg:role amb:ACN5 ] ;
+	pg:hasRole [ pg:index 6; pg:role amb:ACN6 ] ;
+	pg:hasRole [ pg:index 7; pg:role amb:ACN7 ] ;
+	pg:hasRole [ pg:index 8; pg:role amb:ACN8 ] .
+
+pg:AmbisonicBH3P0Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 3 and peripheral order 0." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 4; pg:role amb:ACN8 ] ;
+	pg:hasRole [ pg:index 5; pg:role amb:ACN9 ] ;
+	pg:hasRole [ pg:index 6; pg:role amb:ACN15 ] .
+
+pg:AmbisonicBH3P1Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 3 and peripheral order 1." ;
+	pg:hasRole [ pg:index 0; pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1; pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2; pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3; pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 4; pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 5; pg:role amb:ACN8 ] ;
+	pg:hasRole [ pg:index 6; pg:role amb:ACN9 ] ;
+	pg:hasRole [ pg:index 7; pg:role amb:ACN15 ] .
+
+pg:AmbisonicBH3P2Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 3 and peripheral order 2." ;
+	pg:hasRole [ pg:index 0;  pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1;  pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2;  pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3;  pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 4;  pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 5;  pg:role amb:ACN5 ] ;
+	pg:hasRole [ pg:index 6;  pg:role amb:ACN6 ] ;
+	pg:hasRole [ pg:index 7;  pg:role amb:ACN7 ] ;
+	pg:hasRole [ pg:index 8;  pg:role amb:ACN8 ] ;
+	pg:hasRole [ pg:index 9;  pg:role amb:ACN9 ] ;
+	pg:hasRole [ pg:index 10; pg:role amb:ACN15 ] .
+
+pg:AmbisonicBH3P3Group a rdfs:Class ;
+	rdfs:subClassOf pg:AmbisonicGroup ;
+	rdfs:label "Ambisonic B stream of horizontal order 3 and peripheral order 3." ;
+	pg:hasRole [ pg:index 0;  pg:role amb:ACN0 ] ;
+	pg:hasRole [ pg:index 1;  pg:role amb:ACN1 ] ;
+	pg:hasRole [ pg:index 2;  pg:role amb:ACN2 ] ;
+	pg:hasRole [ pg:index 3;  pg:role amb:ACN3 ] ;
+	pg:hasRole [ pg:index 4;  pg:role amb:ACN4 ] ;
+	pg:hasRole [ pg:index 5;  pg:role amb:ACN5 ] ;
+	pg:hasRole [ pg:index 6;  pg:role amb:ACN6 ] ;
+	pg:hasRole [ pg:index 7;  pg:role amb:ACN7 ] ;
+	pg:hasRole [ pg:index 8;  pg:role amb:ACN8 ] ;
+	pg:hasRole [ pg:index 9;  pg:role amb:ACN9 ] ;
+	pg:hasRole [ pg:index 10; pg:role amb:ACN10 ] ;
+	pg:hasRole [ pg:index 11; pg:role amb:ACN11 ] ;
+	pg:hasRole [ pg:index 12; pg:role amb:ACN12 ] ;
+	pg:hasRole [ pg:index 13; pg:role amb:ACN13 ] ;
+	pg:hasRole [ pg:index 14; pg:role amb:ACN14 ] ;
+	pg:hasRole [ pg:index 15; pg:role amb:ACN15 ] .
+
+
+# Controls
+
+pg:ControlGroup a rdfs:Class ;
+	rdfs:subClassOf pg:Group ;
+	rdfs:comment """
+A group representing a set of associated controls.
+""" .
+
+pg:amplitude          a pg:Role ; rdfs:label "Amplitude" .
+pg:attack             a pg:Role ; rdfs:label "Attack" .
+pg:cutoffFrequency    a pg:Role ; rdfs:label "Cutoff Frequency" .
+pg:decay              a pg:Role ; rdfs:label "Decay" .
+pg:delay              a pg:Role ; rdfs:label "Delay" .
+pg:frequency          a pg:Role ; rdfs:label "Frequency" .
+pg:hold               a pg:Role ; rdfs:label "Hold" .
+pg:pulseWidth         a pg:Role ; rdfs:label "Pulse Width" .
+pg:ratio              a pg:Role ; rdfs:label "Ratio" .
+pg:release            a pg:Role ; rdfs:label "Release" .
+pg:resonance          a pg:Role ; rdfs:label "Resonance" .
+pg:sustain            a pg:Role ; rdfs:label "Sustain" .
+pg:threshold          a pg:Role ; rdfs:label "Threshold" .
+pg:waveform           a pg:Role ; rdfs:label "Waveform" .
+
+pg:EnvelopeControlGroup a rdfs:Class ;
+	rdfs:subClassOf pg:ControlGroup ;
+	rdfs:label "Controls for a DAHDSR envelope." ;
+	pg:mayHavePort pg:delay ;
+	pg:mayHavePort pg:attack ;
+	pg:mayHavePort pg:hold ;
+	pg:mayHavePort pg:decay ;
+	pg:mayHavePort pg:sustain ;
+	pg:mayHavePort pg:release .
+
+pg:OscillatorControlGroup a rdfs:Class ;
+	rdfs:subClassOf pg:ControlGroup ;
+	rdfs:label "Controls for an oscillator." ;
+	pg:mayHavePort pg:frequency ;
+	pg:mayHavePort pg:amplitude ;
+	pg:mayHavePort pg:waveform ;
+	pg:mayHavePort pg:pulseWidth .
+
+pg:FilterControlGroup a rdfs:Class ;
+	rdfs:subClassOf pg:ControlGroup ;
+	rdfs:label "Controls for a filter." ;
+	pg:mayHavePort pg:cutoffFrequency ;
+	pg:mayHavePort pg:resonance .
+
+pg:CompressorControlGroup a rdfs:Class ;
+	rdfs:subClassOf pg:ControlGroup ;
+	rdfs:label "Controls for a compressor." ;
+	pg:mayHavePort pg:threshold ;
+	pg:mayHavePort pg:ratio .
+
diff --git a/ns/ext/port-groups/waf b/ns/ext/port-groups/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/port-groups/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/port-groups/wscript b/ns/ext/port-groups/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/port-groups/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/port-props/ext.pc.in b/ns/ext/port-props/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/port-props/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/port-props/manifest.ttl b/ns/ext/port-props/manifest.ttl
new file mode 100644
index 0000000..b4afe2f
--- /dev/null
+++ b/ns/ext/port-props/manifest.ttl
@@ -0,0 +1,8 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/port-props>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <port-props.ttl> .
diff --git a/ns/ext/port-props/port-props.ttl b/ns/ext/port-props/port-props.ttl
new file mode 100644
index 0000000..d811959
--- /dev/null
+++ b/ns/ext/port-props/port-props.ttl
@@ -0,0 +1,217 @@
+@prefix pprops: <http://lv2plug.in/ns/ext/port-props#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@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 xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/port-props>
+	a lv2:Specification ;
+	doap:name "LV2 Port Properties" ;
+	doap:release [
+		doap:revision "0.1" ;
+		doap:created "2011-11-01"
+	] ;
+	doap:created "2009-01-01" ;
+	doap:shortdesc "Additional properties for LV2 plugin ports." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "Krzysztof Foltman"
+	] , [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This extension defines several useful properties for LV2 plugin ports, which
+can be used in plugin descriptions to better describe ports.  Using this
+metadata, hosts can build better UIs for plugins, and provide more advanced
+automatic functionality.</p>
+""" .
+
+pprops:trigger
+	a lv2:PortProperty ;
+	rdfs:label "Trigger" ;
+	rdfs:comment """
+Indicates that the data item corresponds to a momentary event that has been
+detected (control output ports) or is to be triggered (control input ports).
+For input ports, the port needs to be reset to lv2:default value after run()
+function of the plugin has returned. If the control port is assigned a GUI
+widget by the host, the widget should be of auto-off (momentary, one-shot) type
+- for example, a push button if the port is also declared as lv2:toggled, or a
+series of push button or auto-clear input box with a "Send" button if the port
+is also lv2:integer.
+""" .
+
+pprops:supportsStrictBounds
+	a lv2:Feature ;
+	rdfs:label "Supports strict bounds" ;
+	rdfs:comment """
+Indicates use of host support for pprops:hasStrictBounds port property.  A
+plugin that specifies it as optional feature can omit value clamping for
+hasStrictBounds ports, if the feature is supported by the host.  When specified
+as required feature, it indicates that the plugin does not do any clamping for
+input ports that have a pprops:hasStrictBounds property.
+""" .
+
+pprops:hasStrictBounds
+	a lv2:PortProperty ;
+	rdfs:label "Has strict bounds" ;
+	rdfs:comment """
+For hosts that support pprops:supportsStrictBounds, this indicates that the
+value of the port should never exceed the port's minimum and maximum control
+points.  For input ports, it moves the responsibility for limiting the range of
+values to host, if it supports pprops:supportsStrictBounds.  For output ports,
+it indicates that values within specified range are to be expected, and
+breaking that should be considered by the host as error in plugin
+implementation.
+""" .
+
+pprops:expensive
+	a lv2:PortProperty ;
+	rdfs:label "Changes trigger expensive calculation" ;
+	rdfs:comment """
+Input ports only.  Indicates that any changes to the port value may trigger
+expensive background calculation (e.g. regenerate some lookup tables in a
+background thread).  Any value changes may have not have immediate effect, or
+may cause silence or diminished-quality version of the output until background
+processing is finished.  Ports having this property are typically not well
+suited for connection to outputs of other plugins, and should not be offered as
+connection targets or for automation by default.
+""" .
+
+pprops:causesArtifacts
+	a lv2:PortProperty ;
+	rdfs:label "May cause audio artifacts when changed" ;
+	rdfs:comment """
+Input ports only.  Indicates that any changes to the port value may produce
+slight artifacts to produced audio signals (zipper noise and other results of
+signal discontinuities).  Connecting ports of this type to continuous signals
+is not recommended, and when presenting a list of automation targets, those
+ports may be marked as artifact-producing.
+""" .
+
+pprops:continuousCV
+	a lv2:PortProperty ;
+	rdfs:label "Carries a smooth modulation signal" ;
+	rdfs:comment """
+Indicates that the port carries a "smooth" modulation signal.  Control input
+ports of this type are well-suited for being connected to sources of smooth
+signals (knobs with smoothing, modulation rate oscillators, output ports with
+continuousCV type, etc.).  Typically, the plugin with ports which have this
+property will implement appropriate smoothing to avoid audio artifacts.  For
+output ports, this property suggests the value of the port is likely to change
+frequently, and describes a smooth signal (e.g. successive values may be
+considered points along a curve).
+""" .
+
+pprops:discreteCV
+	a lv2:PortProperty ;
+	rdfs:label "Carries a discrete modulation signal" ;
+	rdfs:comment """
+Indicates that the port carries a "discrete" modulation signal.  Input ports of
+this type are well-suited for being connected to sources of discrete signals
+(switches, buttons, classifiers, event detectors, etc.).  May be combined with
+pprops:trigger property.  For output ports, this property suggests the value of
+the port describe discrete values that should be interpreted as steps (and not
+points along a curve).
+""" .
+
+pprops:reportsBpm
+	a lv2:PortProperty ;
+	rdfs:label "Carries the current tempo expressed in BPM" ;
+	rdfs:comment """
+Indicates that the port is used to pass the current tempo in context of the
+plugin (which may be current song tempo, or tempo of a particular subset of the
+song, or the subgraph the plugin resides in).  For input ports, the host may
+automatically feed the port with current tempo and hide the port from the user,
+unless the user or other factors encourage different behaviour.
+""" .
+
+pprops:reportsBeatsPerBar
+	a lv2:PortProperty ;
+	rdfs:label "Carries the current number of beats in a bar" ;
+	rdfs:comment """
+Indicates that the port may be used to pass the current number of beats in a
+bar.  """ .
+
+pprops:reportsBeatUnit
+	a lv2:PortProperty ;
+	rdfs:label "Carries the current beat size" ;
+	rdfs:comment """
+Indicates that the port may be used to pass the current size of a beat (4 for a
+crochet/quarter note, 8 for a quaver/eighth note, etc.).
+""" .
+
+pprops:logarithmic
+	a lv2:PortProperty ;
+	rdfs:label "Port value uses a logarithmic scale" ;
+	rdfs:comment """
+Indicates that port value behaviour within specified range (bounds) is a value
+using logarithmic scale.  The lower and upper bounds must be specified, and
+must be of the same sign.
+""" .
+
+pprops:notAutomatic
+	a lv2:PortProperty ;
+	rdfs:label "Port is not intended as a CV input" ;
+	rdfs:comment """
+Indicates that the port is not primarily intended to be fed with modulation
+signals from external sources (other plugins, etc.).  It is merely a UI hint
+and hosts may allow the user to override it.
+""" .
+
+pprops:notOnGUI
+	a lv2:PortProperty ;
+	rdfs:label "Port is not to be displayed on a GUI or equivalent" ;
+	rdfs:comment """
+Indicates that the port is not primarily intended to be represented by a
+separate control in the user interface window (or any similar mechanism used
+for direct, immediate control of control ports).  It is merely a UI hint and
+hosts may allow the user to override it.
+""" .
+
+pprops:priority
+	a rdf:Property ;
+	rdfs:domain lv2:Port ;
+	rdfs:range xsd:float ;
+	rdfs:label "Relative usefulness of a port" ;
+	rdfs:comment """
+Indicates how (typically) useful is the port comparing to other ports with that
+property (higher value = more important).  The values do not need to be unique,
+and ports can be grouped based on their priorities.
+""" .
+
+pprops:rangeSteps
+	a rdf:Property ;
+	rdfs:domain lv2:Port ;
+	rdfs:range xsd:nonNegativeInteger ;
+	rdfs:label "Number of value quantization steps" ;
+	lv2:documentation """
+<p>This value indicates into how many evenly-divided points the (control) port
+range shoujld be divided for step-wise control. This may be used for changing
+the value with step-based controllers like arrow keys, mouse wheel, rotary
+encoders, etc.</p>
+
+<p>Note that when used with a pprops:logarithmic port, the steps are
+logarithmic too, and port value can be calculated as:</p>
+
+<pre class="c-code">
+value = lower * pow(upper / lower, step / (steps - 1))
+</pre>
+
+<p>and the step from value is:</p>
+
+<pre class="c-code">
+step = (steps - 1) * log(value / lower) / log(upper / lower)
+</pre>
+
+<p>where:</p>
+<ul>
+<li><code>value</code> is the port value</li>
+<li><code>step</code> is the step number (0..steps)</li>
+<li><code>steps</code> is the number of steps (= value of :rangeSteps property)</li>
+<li><code>lower</code> and <code>upper</code> are the bounds</li>
+</ul>
+""" .
diff --git a/ns/ext/port-props/waf b/ns/ext/port-props/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/port-props/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/port-props/wscript b/ns/ext/port-props/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/port-props/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/presets/ext.pc.in b/ns/ext/presets/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/presets/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/presets/manifest.ttl b/ns/ext/presets/manifest.ttl
new file mode 100644
index 0000000..51985ab
--- /dev/null
+++ b/ns/ext/presets/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/presets>
+	a lv2:Specification ;
+	lv2:minorVersion 2 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <presets.ttl> .
+
diff --git a/ns/ext/presets/presets.ttl b/ns/ext/presets/presets.ttl
new file mode 100644
index 0000000..ebe6d0f
--- /dev/null
+++ b/ns/ext/presets/presets.ttl
@@ -0,0 +1,113 @@
+# LV2 Presets Extension
+# Copyright 2009-2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix dcs:  <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix pset: <http://lv2plug.in/ns/ext/presets#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/ext/presets>
+	a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name "LV2 Presets" ;
+	doap:shortdesc "Presets for LV2 plugins. " ;
+	doap:maintainer <http://drobilla.net/drobilla#me> ;
+	doap:release [
+		doap:revision "2.2" ;
+		doap:created "2011-11-14" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-presets-2.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Update packaging."
+			] , [
+				rdfs:label "Improve documentation."
+			]
+		]
+	] , [
+		doap:revision "2.0" ;
+		doap:created "2010-10-04" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-presets-2.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] ;
+	rdfs:comment """
+Defines presets (e.g. named sets of control values) for LV2 plugins.
+""" .
+
+pset:Preset
+	a rdfs:Class ;
+	rdfs:subClassOf lv2:PluginBase ;
+	rdfs:label "LV2 Preset" ;
+	rdfs:subClassOf [
+		a owl:Restriction ;
+		owl:onProperty rdfs:label ;
+		owl:someValuesFrom xsd:string ;
+		rdfs:comment "A Preset MUST have at least one string rdfs:label."
+	] ;
+	rdfs:comment """
+A Preset for an LV2 Plugin.  A preset can be considered an "overlay" on a
+Plugin.  Rather than attempting to define all valid predicates for a Preset
+(which is not possible since presets may need to specify values for things
+defined in other extensions), the presets extension simply provides this
+class which can be augmented with any data in the exact same fashion as the
+definition of a Plugin.
+
+A Preset SHOULD have at least one pset:appliesTo property.
+Each Port on a Preset MUST have at least a lv2:symbol property and a
+pset:value property.
+""" .
+
+pset:appliesTo
+	a rdf:Property ;
+	rdfs:domain pset:Preset ;
+	rdfs:range lv2:Plugin ;
+	rdfs:label "Applies to" ;
+	rdfs:comment """
+Specifies the Plugin(s) a Preset may be applied to.  When a Preset applies
+to a Plugin, that Preset SHOULD have ports for every control port on that
+plugin, each of which SHOULD have a pset:value property.  If the Preset is
+missing ports, or refers to ports which do not exist on the Plugin, then
+the host SHOULD apply all the values in the preset that do match the Plugin.
+
+The Preset MAY have any other values that should be applied to the Plugin
+in some way.  The host SHOULD simply ignore any values on a Preset it does
+not understand.
+""" .
+
+pset:value
+	a rdf:Property ;
+	rdfs:domain lv2:Port ;
+	rdfs:label "Has value" ;
+	rdfs:comment """
+Specifies the value of a Port on some Preset.  This property is used
+in a similar way to e.g. lv2:default.
+""" .
diff --git a/ns/ext/presets/waf b/ns/ext/presets/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/presets/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/presets/wscript b/ns/ext/presets/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/presets/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/pui/ext.pc.in b/ns/ext/pui/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/pui/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/pui/manifest.ttl b/ns/ext/pui/manifest.ttl
new file mode 100644
index 0000000..1229118
--- /dev/null
+++ b/ns/ext/pui/manifest.ttl
@@ -0,0 +1,8 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#>.
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
+
+<http://lv2plug.in/ns/ext/pui>
+	a lv2:Specification;
+	lv2:minorVersion 0;
+	lv2:microVersion 1;
+	rdfs:seeAlso <pui.ttl>.
diff --git a/ns/ext/pui/pui.h b/ns/ext/pui/pui.h
new file mode 100644
index 0000000..caa7deb
--- /dev/null
+++ b/ns/ext/pui/pui.h
@@ -0,0 +1,374 @@
+/************************************************************************
+ *
+ * Plugin UI extension for LV2
+ *
+ * Copyright (C) 2006-2011 Lars Luthman <mail@larsluthman.net>
+ *
+ * Based on lv2.h, which was
+ *
+ * Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis,
+ *                         Stefan Westerfeld
+ * Copyright (C) 2006 Steve Harris, David Robillard.
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License,
+ * or (at your option) any later version.
+ *
+ * This header 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+ * USA.
+ *
+ ***********************************************************************/
+
+/**
+   @file pui.h C API for the LV2 UI extension <http://lv2plug.in/ns/ext/pui>.
+
+   This file specifies a C API for communication between an LV2 host and an
+   LV2 UI. The interface is similar to the one used for actual LV2 plugins.
+
+   The entry point is the function lv2ui_descriptor().
+*/
+
+#ifndef LV2_PUI_H
+#define LV2_PUI_H
+
+#include <lv2.h>
+
+/** The URI of this extension (note this is not the same as the prefix). */
+#define LV2_PUI_URI "http://lv2plug.in/ns/ext/pui"
+
+/** The numerical ID returned by LV2_PUI_Host_Descriptor::port_index() for
+    invalid port symbols. */
+#define LV2_PUI_INVALID_PORT_INDEX ((uint32_t)-1)
+
+/** The full URI for the pui:floatControl PortProtocol. */
+#define LV2_PUI_FLOAT_CONTROL_URI "http://lv2plug.in/ns/ext/pui#floatControl"
+
+/** The full URI for the pui:floatPeakRMS PortProtocol. */
+#define LV2_PUI_FLOAT_PEAK_RMS_URI "http://lv2plug.in/ns/ext/pui#floatPeakRMS"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   A data type that is used to pass peak and RMS values for a period of
+   audio data at an input or output port to an UI, using port_event. See the
+   documentation for pui:floatPeakRMS for details about how and when this
+   should be done.
+*/
+typedef struct _LV2_PUI_Peak_RMS_Data {
+
+	/**
+	   The start of the measurement period. This is just a running counter that
+	   must not be interpreted as any sort of global frame position. It should
+	   only be interpreted relative to the starts of other measurement periods
+	   in port_event() calls to the same plugin instance.
+
+	   This counter is allowed to overflow, in which case it should just wrap
+	   around.
+	*/
+	uint32_t period_start;
+
+	/**
+	   The size of the measurement period, in the same units as period_start.
+	*/
+	uint32_t period_size;
+
+	/**
+	   The peak value for the measurement period. This should be the maximal
+	   value for abs(sample) over all the samples in the period.
+	*/
+	float peak;
+
+	/**
+	   The RMS value for the measurement period. This should be the root mean
+	   square value of the samples in the period, equivalent to
+	   sqrt((pow(sample1, 2) + pow(sample2, 2) + ... + pow(sampleN, 2)) / N)
+	   where N is period_size.
+	*/
+	float rms;
+
+} LV2_PUI_Peak_RMS_Data;
+
+/**
+   A pointer to a widget or other type of UI.
+   The actual type is defined by the type of the UI defined in the RDF data.
+   All the functionality provided by this extension is toolkit independent, the
+   host only needs to pass the necessary callbacks and display the widget, if
+   possible. Plugins may have several UIs, in various toolkits.
+*/
+typedef void* LV2_PUI_Widget;
+
+/**
+   Handle for a particular instance of a UI.
+   It is valid to compare this to NULL (0 for C++) but otherwise the host MUST
+   NOT attempt to interpret it. The UI may use it to reference internal
+   instance data.
+*/
+typedef void* LV2_PUI_Handle;
+
+/**
+   Handle for host functions and data provided to a UI.
+   An object of this type is passed to the UI's instantiate() function, and the
+   UI must in turn pass it as the first parameter to the callbacks in
+   LV2_PUI_Host_Descriptor. The host may use it to reference internal data, such
+   as the plugin instance that the UI is associated with. The UI MUST NOT
+   interpret the value of an LV2_PUI_Host_Handle in any way.
+*/
+typedef void* LV2_PUI_Host_Handle;
+
+/**
+   Host-provided functions that the UI can use to control the plugin instance.
+
+   A pointer to an object of this type is passed to the lv2ui_descriptor()
+   function.
+
+   The host MUST provide non-NULL values for all the function pointers.
+*/
+typedef struct _LV2_PUI_Host_Descriptor {
+
+	/**
+	   Send data to one of the plugin's input ports.
+
+	   The @c buffer parameter MUST point to a block of data @c buffer_size
+	   bytes large. The contents of this buffer and what the host should do
+	   with it depends on the value of the @c port_protocol parameter.
+
+	   The @c port_protocol parameter MUST be a numeric ID for a
+	   pui:PortProtocol. Numeric IDs for PortProtocols are retrieved using the
+	   port_protocol_id() function.
+
+	   The @c buffer is only valid during the time of this function call, so if
+	   the host wants to keep it for later use it has to copy the contents to an
+	   internal buffer.
+
+	   @param host_handle The @c host_handle that was passed to the UI's
+	   instantiate() function.
+	   @param port_index The index of the port that the data should be written
+	   to, as returned by port_index().
+	   @param buffer_size The size of the data pointed to by @c buffer, in
+	   bytes.
+	   @param port_protocol The numeric ID of the Port Protocol to use,
+	   as returned by port_protocol_id().
+	*/
+	void (*write_port)(LV2_PUI_Host_Handle host_handle,
+	                   uint32_t            port_index,
+	                   uint32_t            buffer_size,
+	                   uint32_t            port_protocol,
+	                   void const*         buffer);
+
+	/**
+	   Return the numerical index for a port.
+	   This index is used when writing data to ports using write_port() and whe
+	   receiving data using port_event(). If @c port_symbol is not a valid port
+	   symbol for @c plugin the host it MUST return
+	   LV2_PUI_INVALID_PORT_INDEX. For performance reasons it may be a good idea
+	   to cache port indices in the UI at instantiation time.
+
+	   @param host_handle The LV2_PUI_Host_Handle that was passed to the UI's
+	   instantiate() function.
+	   @param port_symbol The port's symbol, as defined in the RDF data for
+	   the plugin.
+	*/
+	uint32_t (*port_index)(LV2_PUI_Host_Handle host_handle,
+	                       char const*         port_symbol);
+
+	/**
+	   Subscribe to updates for a port.
+	   This means that the host will call the UI's port_event() function when
+	   the port value changes (as defined by the PortProtocol).
+
+	   Calling this function with the same @c port_index and @c port_protocol
+	   as an already active subscription has no effect.
+
+	   @param host_handle The @c host_handle that was passed to the UI's
+	   instantiate() function.
+	   @param port_index The index of the port, as returned by port_index().
+	   @param port_protocol The numeric ID of the PortProtocol, as
+	   returned by port_protocol_id().
+	*/
+	void (*subscribe_to_port)(LV2_PUI_Host_Handle       host_handle,
+	                          uint32_t                  port_index,
+	                          uint32_t                  port_protocol,
+	                          const LV2_Feature* const* features);
+
+	/**
+	   Unsubscribe from updates for a port.
+	   This means that the host will cease calling calling port_event() when
+	   the port value changes.
+
+	   Calling this function with a @c port_index and @c port_protocol that
+	   does not refer to an active port subscription has no effect.
+
+	   @param host_handle The @c host_handle that was passed to the UI's
+	   instantiate() function.
+	   @param port_index The index of the port, as returned by port_index().
+	   @param port_protocol The numeric ID of the PortProtocol, as
+	   returned by port_protocol_id().
+	*/
+	void (*unsubscribe_from_port)(LV2_PUI_Host_Handle       host_handle,
+	                              uint32_t                  port_index,
+	                              uint32_t                  port_protocol,
+	                              const LV2_Feature* const* features);
+
+
+} LV2_PUI_Host_Descriptor;
+
+/**
+   This struct contains the implementation of an UI. A pointer to an
+   object of this type is returned by the lv2ui_descriptor() function.
+*/
+typedef struct _LV2_PUI_Descriptor {
+
+	/**
+	   The URI for this UI (not for the plugin it controls).
+	*/
+	char const* URI;
+
+	/**
+	   Create a new UI object and return a handle to it. This function works
+	   similarly to the instantiate() member in LV2_Descriptor.
+
+	   @param descriptor The descriptor for the UI to instantiate.
+
+	   @param plugin_uri The URI of the plugin that this UI will control.
+
+	   @param bundle_path The path to the bundle containing the RDF data that
+	   references this shared object file, with trailing separator (e.g. '/').
+
+	   @param host_descriptor A pointer to an object that contains function
+	   pointers that the UI instance should use to control the plugin
+	   instance. This pointer MUST be valid until cleanup() is called for this
+	   UI instance.
+
+	   @param host_handle A handle that the host may use to reference internal
+	   data. It MUST be passed as the first parameter to the function
+	   pointers in @c host_descriptor, and MUST NOT be interpreted in any other
+	   way by the UI.
+
+	   @param features A NULL-terminated array of LV2_Feature pointers. The
+	   host must pass all feature URIs that it and the UI supports and any
+	   additional data, just like in the LV2 plugin instantiate()
+	   function. Note that UI features and plugin features are NOT necessarily
+	   the same; @c features will probably not be the same array as the one the
+	   plugin host passes to a plugin.
+	*/
+	LV2_PUI_Handle (*instantiate)(
+		struct _LV2_PUI_Descriptor const* descriptor,
+		char const*                       plugin_uri,
+		char const*                       bundle_path,
+		LV2_PUI_Host_Descriptor const*    host_descriptor,
+		LV2_PUI_Host_Handle               host_handle,
+		LV2_Feature const* const*         features);
+
+	/**
+	   Return the widget pointer for the UI object.
+	   This MUST return the same value during the entire lifetime of the UI
+	   object.
+	*/
+	LV2_PUI_Widget (*get_widget)(LV2_PUI_Handle ui);
+
+	/**
+	   Destroy the UI object and the associated widget.
+	   The host must not try to access the widget after calling this function.
+	*/
+	void (*cleanup)(LV2_PUI_Handle ui);
+
+	/**
+	   Notify the UI that something has happened to a subscribed port.
+
+	   This is called by the host when something happens at a plugin port that
+	   has been subscribed to using
+	   LV2_PUI_Host_Descriptor::add_port_subscription().
+
+	   The @c buffer is only valid during the time of this function call, so if
+	   the UI wants to keep it for later use it has to copy the contents to an
+	   internal buffer.
+
+	   @param ui A handle for the UI object.
+	   @param port_index The index of the port that has changed, as returned by
+	   LV2_PUI_Host_Descriptor::port_index().
+	   @param buffer_size The size of the data buffer in bytes.
+	   @param port_protocol The format of the data buffer, as returned by
+	   LV2_PUI_Host_Descriptor::port_protocol_id().
+	   @param buffer A pointer to the data buffer.
+	*/
+	void (*port_event)(LV2_PUI_Handle ui,
+	                   uint32_t       port_index,
+	                   uint32_t       buffer_size,
+	                   uint32_t       port_protocol,
+	                   void const*    buffer);
+
+	/**
+	   Return a data structure associated with an extension URI.
+
+	   This facility can be used by extensions to extend the LV2_PUI_Descriptor
+	   API. This function adheres to the same rules as
+	   LV2_Descriptor::extension_data, except it applies to UIs rather than
+	   plugins.
+	*/
+	void const* (*extension_data)(char const*  uri);
+
+} LV2_PUI_Descriptor;
+
+typedef void* LV2_PUI_Lib_Data;
+
+/**
+   Descriptor for a plugin UI library.
+
+   Each plugin UI shared library has exactly one of these objects, accessed
+   via the lv2_pui_lib_descriptor() function in that library.
+*/
+typedef struct {
+	/**
+	   Opaque library data which must be passed as the first parameter to
+	   all the methods of this struct.
+	*/
+	LV2_PUI_Lib_Data lib_data;
+
+	void (*cleanup)(LV2_PUI_Lib_Data lib_data);
+
+	/**
+	   Prototype for UI accessor function.
+
+	   This function follows the same rules as lv2_descriptor(), except it
+	   applies to UIs rather than plugins.
+	*/
+	LV2_PUI_Descriptor const* (*pui_descriptor)(LV2_PUI_Lib_Data lib_data,
+	                                            uint32_t         index);
+
+} LV2_PUI_Lib_Descriptor;
+
+/**
+   Prototype for UI library accessor function.
+
+   This is the entry point for a plugin UI library.  Hosts load this symbol
+   from the library and call this function to obtain a library descriptor which
+   can be used to access all the UIs contained in this library.  The returned
+   object must not be destroyed (with LV2_PUI_Lib_Descriptor::cleanup()) until
+   all UIs loaded from that library have been destroyed.
+*/
+LV2_PUI_Lib_Descriptor const* lv2_pui_lib_descriptor(
+	const char*               bundle_path,
+	LV2_Feature const* const* features);
+
+/**
+   Type of the lv2_pui_lib_descriptor() function in a UI library.
+*/
+typedef LV2_PUI_Lib_Descriptor const* (*LV2_PUI_Lib_Descriptor_Func)(
+	const char*               bundle_path,
+	LV2_Feature const* const* features);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_PUI_H */
diff --git a/ns/ext/pui/pui.ttl b/ns/ext/pui/pui.ttl
new file mode 100644
index 0000000..c035e56
--- /dev/null
+++ b/ns/ext/pui/pui.ttl
@@ -0,0 +1,282 @@
+# LV2 Plugin UI Extension
+# Copyright (C) 2010-2011 Lars Luthman <mail@larsluthman.net>
+#
+# Based on lv2.ttl, which is
+# Copyright (C) 2006-2008 Steve Harris, David Robillard
+#
+# This extension should be considered a replacement for the earlier
+# in-process UI extension with the URI <http://lv2plug.in/ns/extensions/ui>.
+# Hosts and plugins that used that extension should use this one instead.
+# The earlier in-process UI extension is not compatible with LV2 revision 3
+# and later and may break in subtle ways.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#>.
+@prefix pui:  <http://lv2plug.in/ns/ext/pui#>.
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/pui>
+	a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name "LV2 UI" ;
+	doap:shortdesc "Generic UI interface for LV2 plugins." ;
+	doap:release [
+		doap:revision "0.1" ;
+		doap:created "2011-03-26"
+	] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "Lars Luthman" ;
+		foaf:mbox <mailto:mail@larsluthman.net>
+	] ;
+	lv2:documentation """
+<p>This extension defines an interface that can be used to create UIs for 
+plugins. The UIs are code that reside in shared object files in an LV2
+bundle and are referenced in the RDF data using the triples:</p>
+<pre class="turtle-code">
+@prefix pui:     &lt;http://lv2plug.in/ns/ext/pui#&gt; .
+&lt;http://example.org/my-ui&gt;  a             pui:Gtk2UI ;
+                            lv2:appliesTo &lt;http://example.org/my-plugin&gt; ;
+                            pui:binary     &lt;my-ui.so&gt; .
+</pre>
+<p>... where <code>http://example.org/my-plugin</code> is the URI of the plugin,
+<code>http://example.org/my-ui</code> is the URI of the plugin UI and
+<code>my-ui.so</code> is the relative URI to the shared object file. While it
+is possible to have the plugin UI and the plugin in the same shared object file
+it is probably a good idea to keep them separate so that hosts that don't want
+UIs don't have to load the UI code.</p>
+
+<p>A UI MUST specify its class in the RDF data and the class MUST be a proper
+subclass of pui:UI, in this case pui:Gtk2UI. The class defines what type the
+UI is, e.g. what graphics toolkit it uses. There are no UI classes defined in
+this extension, those are specified separately (and anyone can define their
+own).</p>
+
+<p>It's entirely possible to have multiple UIs for the same plugin, or to have
+the UI for a plugin in a different bundle from the actual plugin - this way
+people other than the plugin author can write plugin UIs independently without
+editing the original plugin bundle. It is also possible to have one UI that
+works with several different plugins.</p>
+
+<p>UIs should also be written in such a way that the host may load several
+instances of an UI, or different UIs, and use them with the same plugin
+instance.</p>
+
+<p>Note that the process that loads the shared object file containing the UI
+code and the process that loads the shared object file containing the actual
+plugin implementation do not have to be the same. There are many valid reasons
+for having the plugin and the UI in different processes, or even on different
+machines. This means that you can <strong>not</strong> use singletons and
+global variables and expect them to refer to the same objects in the UI and the
+actual plugin. The function callback interface defined in the header pui.h is
+all you can expect to work.</p>
+""" .
+
+pui:UI
+	a rdfs:Class ;
+	rdfs:subClassOf lv2:Feature ;
+	rdfs:label "UI" ;
+	lv2:documentation """
+<p>The class which represents an LV2 plugin UI.
+</p>
+
+<p>To be used by a host a UI MUST have at least the following properties:</p>
+<ul>
+<li>rdf:type (with object a proper subclass of pui:UI)</li>
+<li>doap:name (one without language tag)</li>
+<li>lv2:binary (with a shared object file as object)</li>
+<li>lv2:appliesTo (with a LV2 plugin as object)</li>
+</ul>
+
+<p>The rdf:type of an UI is used by the host to decide whether it supports the
+UI and how to handle the LV2_PUI_Widget object that is returned by the UIs
+get_widget() function. For example, a type of pui:Gtk2UI might tell the
+host that LV2_PUI_Widget is a pointer to an object of a type defined in the
+Gtk+ library. No UI types are defined in this extension, that is intentionally
+left for other extensions.</p>
+
+<p>The doap:name property should be at most a few words in length using title
+capitalization, e.g. "Flashy Mixer GUI". Use lv2:documentation for more
+detailed descriptions.</p>
+
+<p>UIs may have optional or required features, specified using lv2:optionalFeature
+or lv2:requiredFeature. The same rules apply here as for plugins; a host MUST
+pass the LV2_Feature objects for all features it supports to the UI's
+instantiate() function, a host SHOULD NOT try to instantiate an UI if it
+doesn't support all of its required features, and an UI MUST fail to
+instantiate if the host doesn't pass all required features to instantiate().
+</p>
+
+<p>For details about the C API used to load UIs, see the file pui.h.
+</p>
+""" .
+
+pui:PortProtocol
+	a rdfs:Class ;
+	rdfs:subClassOf lv2:Feature ;
+	rdfs:label "Port protocol" ;
+	lv2:documentation """
+<p>A PortProtocol defines a certain way of communicating port data between UI
+and plugin. PortProtocols can be specified in additional extensions, and
+those extensions MUST specify:
+</p>
+
+<ol>
+<li>Which plugin port types the buffer type is valid for</li>
+<li>When the host should call port_event() in LV2_PUI_Descriptor</li>
+<li>The format of the data in the buffer passed to port_event()</li>
+<li>The format of the data in the buffer passed to write_port()</li>
+<li>What happens when the UI calls write_port() in LV2_PUI_Host_Descriptor</li>
+<li>What data (if any) should be passed in the LV2_Feature data pointer. </li>
+</ol>
+
+<p>For an example, see pui:floatControl or pui:floatPeakRMS.
+</p>
+
+<p>PortProtocol is a subclass of lv2:Feature, so UIs use lv2:optionalFeature and
+lv2:requiredFeature to specify which PortProtocols they want to use.
+</p>
+""" .
+
+pui:floatControl
+	a pui:PortProtocol ;
+	rdfs:label "Floating point value" ;
+	lv2:documentation """
+<p>The rules (see pui:PortProtocol) for this port protocol are:</p>
+<ol>
+<li>This PortProtocol is valid for ports with the type lv2:ControlPort.</li>
+<li>The host SHOULD call port_event() as soon as possible when the port value
+    has changed, but the plugin MUST NOT depend on a call for every change or
+    the timing of the calls. However, the host MUST do the calls in the same
+    order that the value changes occur in.</li>
+<li>The format of the data in the buffer passed to port_event() is a single
+    float, and the buffer size is sizeof(float).</li>
+<li>Same as 3.</li>
+<li>The host SHOULD change the port value as soon as possible when write_port()
+    is called, but the UI MUST NOT depend on a change for every call or the
+    timing of the changes. However, the host MUST do the changes in the same
+    order that the function calls occur in.</li>
+<li>The data pointer in the LV2_Feature object for this feature should be
+    NULL.</li>
+</ol>
+""" .
+
+pui:floatPeakRMS
+	a pui:PortProtocol ;
+	rdfs:label "Peak and RMS for a period of audio data" ;
+	lv2:documentation """
+<p>This port protocol defines a way for the host to send continuous peak
+and RMS measurements of the audio signal at a certain port to the UI. The
+intended use is visualisation, e.g. an animated meter widget that shows
+the level of the audio input or output.</p>
+
+<p>A contiguous sequence of audio samples for which a single peak value
+and a single RMS value have been computed is called a <em>measurement
+period</em>.</p>
+
+<p>The rules (see pui:PortProtocol) for this port protocol are:</p>
+<ol>
+<li>This PortProtocol is valid for ports with the type lv2:AudioPort.</li>
+<li>The host SHOULD call port_event() at regular intervals. The measurement
+    periods used for calls to port_event() for the same port SHOULD be
+    contiguous (i.e. the measurement period for one call should begin right
+    after the end of the measurement period for the previous call ends) unless
+    the UI has removed and re-added the port subscription between those calls.
+    However, UIs MUST NOT depend on either the regularity of the calls or the
+    contiguity of the measurement periods; hosts may change the call rate
+    or skip calls for performance or other reasons. Measurement periods for
+    different calls to port_event() for the same port MUST NOT overlap.</li>
+<li>The format of the data in the buffer passed to port_event() is a single
+    LV2_PUI_Peak_RMS_Data object, and the buffer size is
+    sizeof(LV2_PUI_Peak_RMS_Data).</li>
+<li>The UI MUST NOT call write_port() with the ID for this port protocol as
+    the port_protocol parameter.</li>
+<li>The host MUST ignore any write_port() calls with the ID for this port
+    protocol as the port_protocol parameter.</li>
+<li>The data pointer in the LV2_Feature object for this feature should be
+    NULL.</li>
+</ol>
+""" .
+
+pui:events
+	a pui:PortProtocol ;
+	rdfs:label "Event buffer" ;
+	lv2:documentation """
+<ol>
+<li>This PortProtocol is valid for ports with the type ev:EventPort.</li>
+<li>The host MUST call port_event() whenever there is an event in an input port
+    prior to the plugin instance's run() function is called, and whenever there
+    is an event in an output port after run() has been called. The UI MUST NOT
+    depend on the timing of the calls. However, the host MUST do the calls in
+    the same order that the events occur in. The host is allowed and encouraged
+    to bundle multiple events into a single port_event() call if it improves
+    performance.</li>
+<li>The data buffer passed to port_event() is an LV2_Event_Buffer, as specified
+    in the Event extension. The stamp_type MUST be ignored. The frames and
+    subframes fields of every event in the buffer MUST be ignored. Events with
+    type 0 (reference counted events) MUST be ignored.</li>
+<li>The data buffer passed to write_event() is an LV2_Event_Buffer, as
+    specified in the Event extension. The stamp_type MUST be ignored. The
+    frames and subframes fields of every event in the buffer MUST be
+    ignored. The host MUST NOT pass events with type 0 (references) unless the
+    UI supports the feature "http://lv2plug.in/ns/ext/event".</li>
+<li>The host MUST pass all the events in the buffer to the plugin instance's
+    event port in the same order, but the plugin and the UI MUST NOT depend on
+    the timing of the events, or on whether they are all sent to the plugin in
+    the same run() call or distributed over multiple calls.</li>
+<li>The data pointer in the LV2_Feature object for this feature should be
+    NULL.</li>
+</ol>
+""" .
+
+pui:Gtk2UI
+	a rdfs:Class ;
+	rdfs:subClassOf pui:UI ;
+	rdfs:label "Gtk+ UI" ;
+	lv2:documentation """
+<p>The class which represents a Gtk+ UI. For a successfully created instance of
+an UI of this class, the get_widget() function MUST return a pointer to a valid
+GtkWidget object compatible with Gtk+ version 2.0. The host MUST ensure that
+the Gtk+ library has been initialised and that the Glib main loop is running
+before an UI of this type is instantiated.</p>
+
+<p>Unless otherwise specified by extensions, all function pointers in
+LV2_PUI_Descriptor may only be called from the thread that runs the Glib main
+loop.</p>
+""" .
+
+pui:noHostResize
+	a lv2:Feature ;
+	rdfs:label "No host resize" ;
+	lv2:documentation """
+<p>This Feature should only be used with UIs.</p>
+
+<p>When this Feature is active the host SHOULD NOT resize the UI widget to any
+other size than its natural size, which the host should be able to determine
+via the API of whatever toolkit the UI is implemented in.  However, the UI MUST
+NOT break if the widget is resized to another size. This Feature can be used
+for example when the widget uses a fixed-size pixmap interface.</p>
+
+<p>The data pointer in the LV2_Feature object for this Feature should be set to
+NULL.</p>
+""" .
diff --git a/ns/ext/pui/waf b/ns/ext/pui/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/pui/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/pui/wscript b/ns/ext/pui/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/pui/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/reference/ext.pc.in b/ns/ext/reference/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/reference/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/reference/manifest.ttl b/ns/ext/reference/manifest.ttl
new file mode 100644
index 0000000..e25c54d
--- /dev/null
+++ b/ns/ext/reference/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/reference>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <reference.ttl> .
+
diff --git a/ns/ext/reference/reference.h b/ns/ext/reference/reference.h
new file mode 100644
index 0000000..26ef4c3
--- /dev/null
+++ b/ns/ext/reference/reference.h
@@ -0,0 +1,161 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file reference.h C header for the LV2 Reference extension
+   <http://lv2plug.in/ns/ext/reference>.
+*/
+
+#ifndef LV2_REFERENCE_H
+#define LV2_REFERENCE_H
+
+#define LV2_REFERENCE_URI              "http://lv2plug.in/ns/ext/reference"
+#define LV2_REFERENCE_BLOB_SUPPORT_URI LV2_REFERENCE_URI "#blobSupport"
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+
+/**
+   Dynamically Allocated Data.
+
+   This is an opaque piece of data of any type, dynamically allocated in memory.
+   Unlike an "atom", a "blob" is not necessarily POD.  Non-POD data is referred
+   to by a "reference (a special case of atom with type 0).
+
+   This is a pointer to host data which is opaque to the plugin.  Plugins MUST
+   NOT interpret this data in any way, except via host-provided functions in
+   LV2_Blob_Support.
+*/
+typedef void* LV2_Blob;
+
+typedef LV2_Atom LV2_Reference;
+
+typedef void* LV2_Blob_Support_Data;
+
+typedef void (*LV2_Blob_Destroy)(LV2_Blob* blob);
+
+/**
+   The data field of the LV2_Feature for reference:blobSupport.
+
+   A host which supports blobs must pass an LV2_Feature to the plugin's
+   instantiate method with 'URI' = "http://lv2plug.in/ns/ext/reference#blobSupport"
+   and 'data' pointing to an instance of this struct. All fields of this struct
+   MUST be set to non-NULL values by the host, except possibly 'data'.
+*/
+typedef struct {
+
+	/**
+	   Pointer to opaque host data.
+
+	   The plugin MUST pass this to any call to functions in this struct.
+	   Otherwise, the plugin MUST NOT interpret this value in any way.
+	*/
+	LV2_Blob_Support_Data data;
+
+	/**
+	   The size of a reference, in bytes.
+
+	   This value is provided by the host so plugins can allocate large enough
+	   chunks of memory to store references. Note a reference is an LV2_Reference
+	   with type reference:Reference, hence ref_size is a uint16, like
+	   LV2_Reference.size.
+	*/
+	uint16_t ref_size;
+
+	/**
+	   Return the Blob referred to by @a ref.
+
+	   The returned value MUST NOT be used in any way other than by calling
+	   methods defined in LV2_Blob_Support (e.g. it MUST NOT be directly
+	   accessed, copied, or destroyed). The actual payload of the blob can
+	   be accessed with LV2_Blob_Support.blob_get.
+	*/
+	LV2_Blob (*ref_get)(LV2_Blob_Support_Data data,
+	                    LV2_Reference*        ref);
+
+	/**
+	   Copy a reference.
+	   This copies a reference but not the blob it refers to,
+	   i.e. after this call @a dst and @a src refer to the same LV2_Blob.
+	*/
+	void (*ref_copy)(LV2_Blob_Support_Data data,
+	                 LV2_Reference*        dst,
+	                 LV2_Reference*        src);
+
+	/**
+	   Reset (release) a reference.
+	   After this call, @a ref is invalid. Implementations must be sure to
+	   call this function when necessary, or memory leaks will result. The
+	   specific times this is necessary MUST be defined by any extensions that
+	   define a mechanism for transporting references. The standard semantics are:
+	   <ul><li>Whenever passed a Reference (e.g. via a Port) and run, the
+	   plugin owns that reference.</li>
+	   <li>The plugin owns any reference it creates (e.g. by using blob_new or
+	   ref_copy).</li>
+	   <li>For any reference it owns, the plugin MUST either:
+	   <ul><li>Copy the reference and store it (to be used in future runs and
+	   released later).</li>
+	   <li>Copy the reference to an output port exactly once.</li>
+	   <li>Release it with ref_reset.</li></ul></li>
+	   </ul>
+	*/
+	void (*ref_reset)(LV2_Blob_Support_Data data,
+	                  LV2_Reference*        ref);
+
+	/**
+	   Initialize a reference to point to a newly allocated Blob.
+
+	   @param data Must be the data member of this struct.
+	   @param ref Pointer to an area of memory at least as large as
+	   the ref_size field of this struct. On return, this will
+	   be the unique reference to the new blob, which is owned by the
+	   caller. Assumed to be uninitialised, i.e. the caller MUST NOT
+	   pass a valid reference since this could cause a memory leak.
+	   @param destroy Function to destroy this blob. This function
+	   MUST clean up any resources contained in the blob, but MUST NOT
+	   attempt to free the memory pointed to by its LV2_Blob* parameter
+	   (since this is allocated by the host).
+	   @param type ID of type of blob to allocate.
+	   @param size Size of blob to allocate in bytes.
+	*/
+	void (*blob_new)(LV2_Blob_Support_Data data,
+	                 LV2_Reference*        ref,
+	                 LV2_Blob_Destroy      destroy,
+	                 uint32_t              type,
+	                 size_t                size);
+
+	/**
+	   Get blob's type as an ID.
+
+	   The return value may be any type URI, mapped to an integer with the
+	   URI Map extension with <code>context = NULL</code>.
+	*/
+	uint32_t (*blob_type)(LV2_Blob blob);
+
+	/**
+	   Get blob's body.
+
+	   Returns a pointer to the start of the blob data. The format of this
+	   data is defined by the return value of the type method. It MUST NOT
+	   be used in any way by code which does not understand that type.
+	*/
+	void* (*blob_data)(LV2_Blob blob);
+
+} LV2_Blob_Support;
+
+#endif /* LV2_REFERENCE_H */
diff --git a/ns/ext/reference/reference.ttl b/ns/ext/reference/reference.ttl
new file mode 100644
index 0000000..1e030ee
--- /dev/null
+++ b/ns/ext/reference/reference.ttl
@@ -0,0 +1,82 @@
+# LV2 Reference Extension
+# Copyright 2007-2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix atom:      <http://lv2plug.in/ns/ext/atom#> .
+@prefix doap:      <http://usefulinc.com/ns/doap#> .
+@prefix foaf:      <http://xmlns.com/foaf/0.1/> .
+@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 reference: <http://lv2plug.in/ns/ext/reference#> .
+
+<http://lv2plug.in/ns/ext/reference>
+	a lv2:Specification ;
+	doap:name "LV2 Reference" ;
+	doap:shortdesc "A reference data type for using non-POD data." ;
+    doap:release [
+        doap:revision "0.1" ;
+        doap:created "2011-07-22"
+    ] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name	 "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This extension defines a mechanism for working with generic/opaque
+dynamically allocated memory, called a <a href="#Blob">"Blob"</a>, which is
+(unlike an Atom) not necessarily POD.  Blobs are accessed via a
+reference:Reference, which is a special case of <a
+href="http://lv2plug.in/ns/ext/ext#Atom">Atom</a> that always has <code>type =
+0</code>, is not POD, and can only be copied using host provided functions.
+This allows plugins and hosts to work with data of any type at all.</p>
+""" .
+
+reference:Reference a rdfs:Class ;
+	rdfs:subClassOf atom:Atom ;
+	rdfs:label      "Reference" ;
+	lv2:documentation """
+<p>Reference to an lv2:Blob.  The actual contents of a Reference are opaque and
+host specific, and must not be copied, serialized, or otherwise interpreted by
+a plugin, except via functions provided by the host in LV2_Blob_Support.</p>
+
+<p>A Reference is a special case of Atom with <code>type = 0</code>.
+"Null" is the unique Atom with <code>type = 0</code> and
+<code>size = 0</code>.</p>
+""" .
+
+reference:blobSupport a lv2:Feature ;
+	rdfs:label "Blob support" ;
+	lv2:documentation """
+<p>Support for dynamically allocated blobs.  If a host supports this feature,
+it MUST pass a LV2_Feature with <code>URI</code>
+http://lv2plug.in/ns/ext/atom#blobSupport and <code>data</code> pointing to a
+LV2_Blob_Support.</p>
+""" .
+
+reference:Blob a rdfs:Class ;
+	rdfs:label      "Blob" ;
+	lv2:documentation """
+<p>Base class for all dynamically allocated blobs.  An LV2_Blob is an opaque
+pointer to host data.  The type and data of a blob can be accessed via
+host-provided functions in LV2_Blob_Support.  The type of a blob can be any URI
+that describes a data format.  Blobs are always allocated by the host, and
+unlike atoms are not necessarily POD.</p>
+
+<p>Blob data MUST NOT be used in any way by an implementation that does not
+understand that blob type (unlike Atoms, meaningful type-oblivious use
+of a Blob is impossible).</p>
+""" .
diff --git a/ns/ext/reference/waf b/ns/ext/reference/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/reference/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/reference/wscript b/ns/ext/reference/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/reference/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/resize-port/ext.pc.in b/ns/ext/resize-port/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/resize-port/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/resize-port/manifest.ttl b/ns/ext/resize-port/manifest.ttl
new file mode 100644
index 0000000..37d1b42
--- /dev/null
+++ b/ns/ext/resize-port/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/resize-port>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <resize-port.ttl> .
+
diff --git a/ns/ext/resize-port/resize-port.h b/ns/ext/resize-port/resize-port.h
new file mode 100644
index 0000000..7f014a3
--- /dev/null
+++ b/ns/ext/resize-port/resize-port.h
@@ -0,0 +1,57 @@
+/* LV2 Resize Port Extension
+ * Copyright (C) 2007-2009 David Robillard <http://drobilla.net>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This header 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 General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LV2_RESIZE_PORT_H
+#define LV2_RESIZE_PORT_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#define LV2_RESIZE_PORT_URI "http://lv2plug.in/ns/ext/resize-port"
+
+typedef void* LV2_Resize_Port_Feature_Data;
+
+typedef struct {
+
+	LV2_Resize_Port_Feature_Data data;
+
+	/** Resize a port buffer to at least @a size bytes.
+	 *
+	 * This function MAY return false, in which case the port buffer was
+	 * not resized and the port is still connected to the same location.
+	 * Plugins MUST gracefully handle this situation.
+	 *
+	 * This function MUST NOT be called from any context other than
+	 * the context associated with the port of the given index.
+	 *
+	 * The host MUST preserve the contents of the port buffer when
+	 * resizing.
+	 *
+	 * Plugins MAY resize a port many times in a single run callback.
+	 * Hosts SHOULD make this an inexpensive as possible (i.e. plugins
+	 * can liberally use this function in a similar way to realloc).
+	 */
+	bool (*resize_port)(LV2_Resize_Port_Feature_Data data,
+	                    uint32_t                     index,
+	                    size_t                       size);
+
+} LV2_Resize_Port_Feature;
+
+#endif /* LV2_RESIZE_PORT_H */
+
diff --git a/ns/ext/resize-port/resize-port.ttl b/ns/ext/resize-port/resize-port.ttl
new file mode 100644
index 0000000..baa1f7f
--- /dev/null
+++ b/ns/ext/resize-port/resize-port.ttl
@@ -0,0 +1,80 @@
+# LV2 Contexts Extension
+#
+# Allows for an LV2 plugin to have several independent contexts, each with its
+# own run callback and associated ports.
+#
+# Copyright (C) 2007 David Robillard
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix rsz:  <http://lv2plug.in/ns/ext/resize-port#> .
+@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 xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/resize-port>
+	a lv2:Specification ;
+	a lv2:Feature ;
+    doap:name "LV2 Resize Port Extension" ;
+    doap:shortdesc "Dynamically sized LV2 port buffers." ;
+	lv2:documentation """
+<p>An extension that allows LV2 plugins to request a resize of an output port.</p>
+
+<p>Any host which supports this extension must pass an LV2_Feature to
+the plugin's instantiate method with URI http://lv2plug.in/ns/ext/resize-port
+and a pointer to a LV2_Resize_Port_Feature structure (see
+<a href="resize-port.h">resize-port.h</a> for details).  This structure
+provides a resize_port function which plugins may use to resize output
+port buffers as necessary.</p>
+
+<p>This extension also defines several predicates useful for describing the
+amount of space required for a particular port buffer.</p>
+""" .
+
+rsz:asLargeAs a rdf:Property ;
+    rdfs:domain  lv2:Port ;
+    rdfs:range   lv2:Symbol ;
+    rdfs:label   "as large as" ;
+    rdfs:comment """
+Indicates that a port requires at least as much buffer space as the port
+with the given symbol on the same plugin instance.  This may be used for
+any ports, but is generally most useful to indicate an output port must
+be at least as large as some input port (because it will copy from it).
+If a port is asLargeAs several ports, it is asLargeAs the largest such port
+(not the sum of those ports' sizes).
+
+The host guarantees that whenever an ObjectPort's run method is called,
+any output O that is obj:asLargeAs an input I is connected to a buffer large
+enough to copy I, or NULL if the port is lv2:connectionOptional.
+""" .
+
+rsz:minimumSize a rdf:Property ;
+    rdfs:domain  lv2:Port ;
+    rdfs:range   lv2:Symbol ;
+    rdfs:label   "minimum size" ;
+    rdfs:comment """
+Indicates that a port requires a buffer at least this large, in bytes.
+Any host that supports the resize-port feature MUST connect any port with a
+minimumSize specified to a buffer at least as large as the value given for
+this property.  Any host, especially those that do NOT support dynamic port
+resizing, SHOULD do so or reduced functionality may result.
+""" .
diff --git a/ns/ext/resize-port/waf b/ns/ext/resize-port/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/resize-port/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/resize-port/wscript b/ns/ext/resize-port/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/resize-port/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/state/ext.pc.in b/ns/ext/state/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/state/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/state/manifest.ttl b/ns/ext/state/manifest.ttl
new file mode 100644
index 0000000..7894a22
--- /dev/null
+++ b/ns/ext/state/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/state>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <state.ttl> .
+
diff --git a/ns/ext/state/state.h b/ns/ext/state/state.h
new file mode 100644
index 0000000..4e1c28a
--- /dev/null
+++ b/ns/ext/state/state.h
@@ -0,0 +1,258 @@
+/*
+  Copyright 2010-2011 David Robillard <http://drobilla.net>
+  Copyright 2010 Leonard Ritter <paniq@paniq.org>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file
+   C API for the LV2 State extension <http://lv2plug.in/ns/ext/state>.
+*/
+
+#ifndef LV2_STATE_H
+#define LV2_STATE_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define LV2_STATE_URI "http://lv2plug.in/ns/ext/state"
+
+#define LV2_STATE_INTERFACE_URI LV2_STATE_URI "#Interface"
+
+typedef void* LV2_State_Handle;
+
+/**
+   Flags describing value characteristics.
+
+   These flags are used along with the value's type URI to determine how to
+   (de-)serialise the value data, or whether it is even possible to do so.
+*/
+typedef enum {
+
+	/**
+	   Plain Old Data.
+
+	   Values with this flag contain no references to non-stateent or
+	   non-global resources (e.g. pointers, handles, local paths, etc.). It is
+	   safe to copy POD values with a simple memcpy and store them for use at
+	   any time in the future on a machine with a compatible architecture
+	   (e.g. the same endianness and alignment).
+
+	   Implementations MUST NOT attempt to copy or serialise a non-POD value if
+	   they do not understand its type (and thus know how to correctly do so).
+	*/
+	LV2_STATE_IS_POD = 1,
+
+	/**
+	   Portable (architecture independent) data.
+
+	   Values with this flag are in a format that is usable on any
+	   architecture, i.e. if the value is saved on one machine it can safely be
+	   restored on another machine regardless of endianness, alignment, etc.
+	*/
+	LV2_STATE_IS_PORTABLE = 1 << 1,
+
+	/**
+	   Native data.
+
+	   This flag is used by the host to indicate that the saved data is only
+	   going to be used locally in the currently running process (e.g. for
+	   instance duplication or snapshots), so the plugin should use the most
+	   efficient representation possible and not worry about serialisation
+	   and portability.
+	*/
+	LV2_STATE_IS_NATIVE = 1 << 2
+
+} LV2_State_Flags;
+
+/**
+   A host-provided function to store a property.
+   @param handle Must be the handle passed to LV2_State_Interface.save().
+   @param key The key (predicate) to store @c value under (URI mapped integer).
+   @param value Pointer to the value (object) to be stored.
+   @param size The size of the data at @c value in bytes.
+   @param type The type of @c value (URI).
+   @param flags LV2_State_Flags for @c value.
+   @return 0 on success, otherwise a non-zero error code.
+
+   The host passes a callback of this type to LV2_State_Interface.save(). This callback
+   is called repeatedly by the plugin within LV2_State_Interface.save() to store all
+   the statements that describe its current state.
+
+   The host MAY fail to store a property if the type is not understood and is
+   not LV2_STATE_IS_POD and/or LV2_STATE_IS_PORTABLE. Implementations are
+   encouraged to use POD and portable values (e.g. string literals) wherever
+   possible, and use common types (e.g. types from
+   http://lv2plug.in/ns/ext/atom) regardless, since hosts are likely to already
+   contain the necessary implementation.
+
+   Note that @c size MUST be > 0, and @c value MUST point to a valid region of
+   memory @c size bytes long (this is required to make restore unambiguous).
+
+   The plugin MUST NOT attempt to use this function outside of the
+   LV2_State_Interface.restore() context.
+*/
+typedef int (*LV2_State_Store_Function)(LV2_State_Handle handle,
+                                        uint32_t         key,
+                                        const void*      value,
+                                        size_t           size,
+                                        uint32_t         type,
+                                        uint32_t         flags);
+
+/**
+   A host-provided function to retrieve a property.
+   @param handle Must be the handle passed to
+   LV2_State_Interface.restore().
+   @param key The key (predicate) of the property to retrieve (URI).
+   @param size (Output) If non-NULL, set to the size of the restored value.
+   @param type (Output) If non-NULL, set to the type of the restored value.
+   @param flags (Output) If non-NULL, set to the LV2_State_Flags for
+   the returned value.
+   @return A pointer to the restored value (object), or NULL if no value
+   has been stored under @c key.
+
+   A callback of this type is passed by the host to
+   LV2_State_Interface.restore(). This callback is called repeatedly by the
+   plugin within LV2_State_Interface.restore() to retrieve any properties it
+   requires to restore its state.
+
+   The returned value MUST remain valid until LV2_State_Interface.restore()
+   returns.
+
+   The plugin MUST NOT attempt to use this function, or any value returned from
+   it, outside of the LV2_State_Interface.restore() context. Returned values
+   MAY be copied for later use if necessary, assuming the plugin knows how to
+   do so correctly (e.g. the value is POD, or the plugin understands the type).
+*/
+typedef const void* (*LV2_State_Retrieve_Function)(LV2_State_Handle handle,
+                                                   uint32_t         key,
+                                                   size_t*          size,
+                                                   uint32_t*        type,
+                                                   uint32_t*        flags);
+
+/**
+   State Extension Data.
+
+   When the plugin's extension_data is called with argument LV2_STATE_URI,
+   the plugin MUST return an LV2_State structure, which remains valid for the
+   lifetime of the plugin.
+
+   The host can use the contained function pointers to save and restore the
+   state of a plugin instance at any time (provided the threading restrictions
+   for the given function are met).
+
+   The typical use case is to save the plugin's state when a project is saved,
+   and to restore the state when a project has been loaded. Other uses are
+   possible (e.g. cloning plugin instances or taking a snapshot of plugin
+   state).
+
+   Stored data is only guaranteed to be compatible between instances of plugins
+   with the same URI (i.e. if a change to a plugin would cause a fatal error
+   when restoring state saved by a previous version of that plugin, the plugin
+   URI MUST change just as it must when ports change incompatibly). Plugin
+   authors should consider this possibility, and always store sensible data
+   with meaningful types to avoid such compatibility issues in the future.
+*/
+typedef struct _LV2_State_Interface {
+
+	/**
+	   Save plugin state using a host-provided @c store callback.
+
+	   @param instance The instance handle of the plugin.
+	   @param store The host-provided store callback.
+	   @param handle An opaque pointer to host data, e.g. the map or
+	   file where the values are to be stored. If @c store is called, this MUST
+	   be passed as its handle parameter.
+	   @param flags Flags describing desires properties of this save.  The
+	   plugin SHOULD use these values to determine the most appropriate and/or
+	   efficient serialisation, but is not required to do so.
+	   @param features Extensible parameter for passing any additional
+	   features to be used for this save.
+
+	   The plugin is expected to store everything necessary to completely
+	   restore its state later (possibly much later, in a different process, on
+	   a completely different machine, etc.)
+
+	   The @c handle pointer and @c store function MUST NOT be used
+	   beyond the scope of save().
+
+	   This function has its own special threading class: it may not be called
+	   concurrently with any "Instantiation" function, but it may be called
+	   concurrently with functions in any other class, unless the definition of
+	   that class prohibits it (e.g. it may not be called concurrently with a
+	   "Discovery" function, but it may be called concurrently with an "Audio"
+	   function. The plugin is responsible for any locking or lock-free
+	   techniques necessary to make this possible.
+
+	   Note that in the simple case where state is only modified by restore(),
+	   there are no synchronization issues since save() is never called
+	   concurrently with restore() (though run() may read it during a save).
+
+	   Plugins that dynamically modify state while running, however, must take
+	   care to do so in such a way that a concurrent call to save() will save a
+	   consistent representation of plugin state for a single instant in time.
+	*/
+	void (*save)(LV2_Handle                 instance,
+	             LV2_State_Store_Function   store,
+	             LV2_State_Handle           handle,
+	             uint32_t                   flags,
+	             const LV2_Feature *const * features);
+
+
+	/**
+	   Restore plugin state using a host-provided @c retrieve callback.
+
+	   @param instance The instance handle of the plugin.
+	   @param retrieve The host-provided retrieve callback.
+	   @param handle An opaque pointer to host data, e.g. the map or
+	   file from which the values are to be restored. If @c retrieve is
+	   called, this MUST be passed as its handle parameter.
+	   @param flags Currently unused.
+	   @param features Extensible parameter for passing any additional
+	   features to be used for this restore.
+
+	   The plugin MAY assume a restored value was set by a previous call to
+	   LV2_State_Interface.save() by a plugin with the same URI.
+
+	   The plugin MUST gracefully fall back to a default value when a value can
+	   not be retrieved. This allows the host to reset the plugin state with an
+	   empty map.
+
+	   The @c handle pointer and @c store function MUST NOT be used
+	   beyond the scope of restore().
+
+	   This function is in the "Instantiation" threading class as defined by
+	   LV2. This means it MUST NOT be called concurrently with any other
+	   function on the same plugin instance.
+	*/
+	void (*restore)(LV2_Handle                  instance,
+	                LV2_State_Retrieve_Function retrieve,
+	                LV2_State_Handle            handle,
+	                uint32_t                    flags,
+	                const LV2_Feature *const *  features);
+
+} LV2_State_Interface;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* LV2_STATE_H */
diff --git a/ns/ext/state/state.ttl b/ns/ext/state/state.ttl
new file mode 100644
index 0000000..c79188e
--- /dev/null
+++ b/ns/ext/state/state.ttl
@@ -0,0 +1,231 @@
+# LV2 State Extension
+# Copyright 2010-2011 David Robillard <d@drobilla.net>
+# Copyright 2010 Leonard Ritter <paniq@paniq.org>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix state: <http://lv2plug.in/ns/ext/state#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@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#> .
+
+<http://lv2plug.in/ns/ext/state>
+    a lv2:Specification ;
+    doap:name "LV2 State" ;
+    doap:shortdesc "An interface for LV2 plugins to save and restore state." ;
+    doap:license <http://opensource.org/licenses/isc-license> ;
+    doap:release [
+        doap:revision "0.2" ;
+        doap:created "2011-11-14"
+    ] ;
+    doap:developer [
+        a foaf:Person ;
+        foaf:name "Leonard Ritter" ;
+        foaf:homepage <http://paniq.org> ;
+    ] ;
+    doap:maintainer [
+        a foaf:Person ;
+        foaf:name     "David Robillard" ;
+        foaf:homepage <http://drobilla.net/> ;
+        rdfs:seeAlso  <http://drobilla.net/drobilla.rdf>
+    ] ;
+    lv2:documentation """
+<p>This extension provides a mechanism for plugins to save and restore state
+across instances, allowing hosts to save, restore, clone, or take a snapshot of
+a plugin instance's state at any point in time.  The intention is for a plugin
+instance's state to be <em>completely</em> described by port values (as with all
+LV2 plugins) and a simple dictionary.</p>
+
+<p>The <q>state</q> described by this extension is conceptually a single
+key/value dictionary, where keys are URIDs and values are type-tagged blobs of
+any type.  The plugin provides an LV2_State_Interface for working with this
+state.  To save or restore, the host calls LV2_State_Interface::save() or
+LV2_State_Interface::restore(), passing a callback to be used for handling a
+single key/value pair.  The host is free to implement saving and restoring in
+any way; the actual mechanism is completely abstract from the plugin's
+perspective.</p>
+
+<p>Because state is a simple dictionary, hosts and plugins can work with it
+easily from many languages and protocols.  Keys are URIDs for performance
+reasons as well as RDF compatibility, which makes it simple to serialise state
+in many formats (e.g. any RDF syntax, JSON, XML, key/value databases such as
+BDB, etc.).  In particular, state can be elegantly described in a plugin's
+Turtle description, which is useful for e.g. presets or default state.
+Specific keys may be described in Turtle on the fly or in extensions,
+allowing plugins to use common well-defined keys.</p>
+
+<p>This extension defines a conceptual model of state and a mechanism for
+saving and restoring it, but no interface for manipulating it dynamically.
+While no such mechanism is defined here, dynamic control of plugins SHOULD be
+achieved by generic manipulations of the same conceptual state dictionary used
+by this extension (e.g. <code>plugin->set(key, value)</code>).  Accordingly,
+plugins SHOULD use meaningful and well-defined keys wherever possible.</p>
+
+<p>In pseudo code, a typical use case in a plugin is:</p>
+<pre class="c-code">
+#define NS_EG   "http://example.org/"
+#define NS_ATOM "http://lv2plug.in/ns/ext/atom#"
+
+LV2_Handle my_instantiate(...)
+{
+    MyPlugin* plugin = ...;
+    plugin->uris.atom_String = map_uri(NS_ATOM "String");
+    plugin->uris.eg_greeting = map_uri(NS_EG "greeting");
+    plugin->state.greeting   = strdup("Hello");
+    return plugin;
+}
+
+void my_save(LV2_Handle                 instance,
+             LV2_State_Store_Function   store,
+             void*                      handle,
+             uint32_t                   flags,
+             const LV2_Feature *const * features)
+
+{
+    MyPlugin*   plugin   = (MyPlugin*)instance;
+    const char* greeting = plugin->state.greeting;
+
+    store(handle,
+          plugin->uris.eg_greeting,
+          greeting,
+          strlen(greeting) + 1,
+          plugin->uris.atom_String,
+          LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
+}
+
+void my_restore(LV2_Handle                  instance,
+                LV2_State_Retrieve_Function retrieve,
+                void*                       handle,
+                uint32_t                    flags,
+                const LV2_Feature *const *   features)
+{
+    MyPlugin* plugin = (MyPlugin*)instance;
+
+    size_t      size;
+    uint32_t    type;
+    uint32_t    flags;
+    const char* greeting = retrieve(handle,
+                                    plugin->uris.eg_greeting,
+                                    &amp;size,
+                                    &amp;type,
+                                    &amp;flags);
+
+    if (greeting) {
+        free(plugin->state->greeting);
+        plugin->state->greeting = strdup(greeting);
+    } else {
+        plugin->state->greeting = strdup("Hello");
+    }
+}
+
+const void* my_extension_data(const char* uri)
+{
+    static const LV2_State_Interface state_iface = { my_save, my_restore };
+    if (!strcmp(uri, LV2_STATE_INTERFACE_URI)) {
+        return &amp;state_iface;
+    }
+}
+</pre>
+
+<p>Similarly, a typical use case in a host is:</p>
+<pre class="c-code">
+int store_callback(void*       handle,
+                   uint32_t    key,
+                   const void* value,
+                   size_t      size,
+                   uint32_t    type,
+                   uint32_t    flags)
+{
+    if ((flags &amp; LV2_STATE_IS_POD)) {
+        /* We only care about POD since we're keeping state in memory only.
+           If this was for disk or network storage/transmission,
+           LV2_STATE_IS_PORTABLE would have to be checked as well.
+        */
+        Map* state_map = (Map*)handle;
+        state_map->insert(key, Value(copy(value), size, type, pod));
+        return 0;
+    } else {
+        return 1; /* Non-POD events are unsupported. */
+    }
+}
+
+Map get_plugin_state(LV2_Handle instance)
+{
+    LV2_State* state = instance.extension_data("http://lv2plug.in/ns/ext/state");
+    Map state_map;
+    /** Request a fast/native/POD save, since we're just copying in memory */
+    state.save(instance, store_callback, &amp;state_map,
+               LV2_STATE_IS_POD|LV2_STATE_IS_NATIVE);
+    return state_map;
+}
+</pre>
+""" .
+
+state:Interface
+    a rdfs:Class ;
+    rdfs:subClassOf lv2:ExtensionData ;
+    lv2:documentation """
+<p>A structure (LV2_State_Interface) which contains functions to be called by
+the host to save and restore state.  In order to support this extension, the
+plugin must return a valid LV2_State_Interface from
+LV2_Descriptor::extension_data() when it is called with
+LV2_STATE_INTERFACE_URI.</p>
+
+<p>The plugin data file should describe this like so:</p>
+<pre class="turtle-code">
+@prefix state: &lt;http://lv2plug.in/ns/ext/state#&gt; .
+
+&lt;plugin&gt;
+    a lv2:Plugin ;
+    lv2:extensionData state:Interface .
+</pre>
+""" .
+
+state:InstanceState
+    a rdfs:Class ;
+    rdfs:label "Plugin Instance State" ;
+    rdfs:comment """
+This class is used to express a plugin instance's state in RDF. The key/value
+properties of the instance form the predicate/object (respectively) of triples
+with a state:InstanceState as the subject (see state:instanceState for an
+example). This may be used wherever it is useful to express a plugin instance's
+state in RDF (e.g. for serialisation, storing in a model, or transmitting over
+a network). Note that this class is provided because it may be useful for
+hosts, plugins, or extensions that work with instance state, but its use is not
+required to support the LV2 State extension.
+""" .
+
+state:instanceState
+    a rdf:Property ;
+    rdfs:range state:InstanceState ;
+    lv2:documentation """
+<p>Predicate to relate a plugin instance to an InstanceState. This may be used
+wherever the state of a particular plugin instance needs to be represented.
+Note that the domain of this property is unspecified, since LV2 does not define
+any RDF class for plugin instance. This predicate may be used wherever it makes
+sense to do so, e.g.:</p>
+<pre class="turtle-code">
+@prefix eg: &lt;http://example.org/&gt; .
+
+&lt;plugininstance&gt; state:instanceState [
+    eg:somekey "some value" ;
+    eg:someotherkey "some other value" ;
+    eg:favourite-number 2
+] .
+</pre>
+<p>Note that this property is provided because it may be useful for hosts,
+plugins, or extensions that work with instance state, but its use is not
+required to support the LV2 State extension.</p>
+""" .
diff --git a/ns/ext/state/waf b/ns/ext/state/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/state/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/state/wscript b/ns/ext/state/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/state/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/string-port/ext.pc.in b/ns/ext/string-port/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/string-port/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/string-port/manifest.ttl b/ns/ext/string-port/manifest.ttl
new file mode 100644
index 0000000..d0e618e
--- /dev/null
+++ b/ns/ext/string-port/manifest.ttl
@@ -0,0 +1,8 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/string-port>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <string-port.ttl> .
diff --git a/ns/ext/string-port/string-port.h b/ns/ext/string-port/string-port.h
new file mode 100644
index 0000000..e7fc8c7
--- /dev/null
+++ b/ns/ext/string-port/string-port.h
@@ -0,0 +1,58 @@
+/* lv2_string_port.h - C header file for LV2 string port extension.
+ * Draft Revision 3
+ * Copyright (C) 2008 Krzysztof Foltman <wdev@foltman.com>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This header 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this header; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 01222-1307 USA
+ */
+
+/** @file
+ * C header for the LV2 String Port extension
+ * <http://lv2plug.in/ns/ext/string-port#StringTransfer>.
+ */
+
+#ifndef LV2_STRING_PORT_H
+#define LV2_STRING_PORT_H
+
+#include <stdint.h>
+
+/** URI for the string port transfer mechanism feature */
+#define LV2_STRING_PORT_URI "http://lv2plug.in/ns/ext/string-port#StringTransfer"
+
+/** Flag: port data has been updated; for input ports, this flag is set by
+the host. For output ports, this flag is set by the plugin. */
+#define LV2_STRING_DATA_CHANGED_FLAG 1
+
+/** structure for string port data */
+typedef struct
+{
+    /** Buffer for UTF-8 encoded zero-terminated string value; host-allocated */
+    char *data;
+
+    /** Length in bytes (not characters), not including zero byte */
+    size_t len;
+
+    /** Output ports: storage space in bytes; must be >= RDF-specified requirements */
+    size_t storage;
+
+    /** Flags defined above */
+    uint32_t flags;
+
+    /** Undefined (pad to 8 bytes) */
+    uint32_t pad;
+
+} LV2_String_Data;
+
+#endif
+
diff --git a/ns/ext/string-port/string-port.ttl b/ns/ext/string-port/string-port.ttl
new file mode 100644
index 0000000..f36fa7a
--- /dev/null
+++ b/ns/ext/string-port/string-port.ttl
@@ -0,0 +1,105 @@
+# LV2 String Port Extension.
+# Draft Revision 3
+# Copyright (C) 2008 Krzysztof Foltman
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix sp:   <http://lv2plug.in/ns/ext/string-port#> .
+@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 xsd:  <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/string-port> a lv2:Specification ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name    "LV2 String Ports" ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "Krzysztof Foltman" ;
+	] ;
+	lv2:documentation """
+<p>Defines ports which contain string data.</p>
+
+<h4>UI issues</h4>
+<p>When using port_event / write_port (and possible other communication
+mechanisms), the format parameter should contain the numeric value of URI
+LV2_STRING_PORT_URI (mapped with http://lv2plug.in/ns/extensions/ui specified
+as map URI).</p>
+
+<p>It's probably possible to use ports belonging to message context
+&lt;http://lv2plug.in/ns/ext/contexts#MessageContext&gt; for transfer. However,
+contexts mechanism does not offer any way to notify the message recipient about
+which ports have been changed. To remedy that, this extension defines a flag
+LV2_STRING_DATA_CHANGED_FLAG that carries that information inside a port value
+structure.</p>
+
+<h4>Storage</h4>
+<p>The value of string port are assumed to be "persistent": if a host saves and
+restores a state of a plugin (e.g. control port values), the values of input
+string ports should also be assumed to belong to that state. This also applies
+to message context: if a session is being restored, the host MUST resend the
+last value that was sent to the port before session has been saved. In other
+words, string port values "stick" to message ports.</p>
+""" .
+
+sp:StringTransfer a lv2:Feature ;
+   rdfs:label "String data transfer via LV2_String_Data" .
+
+sp:StringPort a lv2:Port ;
+   rdfs:label "String port" ;
+   lv2:documentation """
+<p>Indicates that the port data points to a LV2_String_Data structure
+as defined in accompanying header file.</p>
+
+<h4>Input Port Semantics</h4>
+<p>If the port does not have a context specified (it runs in the default,
+realtime audio processing context), the values in the structure and the actual
+string data MUST remain unchanged for the time a run() function of a plugin
+is executed. However, if the port belongs to a different context, the same
+data MUST remain unchanged only for the time a run() or message_process()
+function of a given context is executed.</p>
+
+<h4>Output Port Semantics</h4>
+<p>The plugin may only change the string or length in a run() function (if
+the port belongs to default context) or in context-defined counterparts
+(if the port belongs to another context). Because of that, using default
+context output string ports is contraindicated for longer strings.</p>
+""" .
+
+sp:default a rdf:Property ;
+   rdfs:label "Default value" ;
+   rdfs:domain sp:StringPort ;
+   rdfs:range xsd:string ;
+   rdfs:comment """
+Gives a default value for a string port.
+""" .
+
+sp:requiredSpace a rdf:Property ;
+   rdfs:label "Required storage space in bytes" ;
+   rdfs:domain sp:StringPort ;
+   rdfs:range xsd:nonNegativeInteger ;
+   rdfs:comment """
+Specifies required buffer space for output string ports and those of
+input string ports that are meant to be GUI-controlled. The host MUST
+allocate a buffer of at least required size to accommodate for all values
+that can be produced by the plugin.
+""" .
+
diff --git a/ns/ext/string-port/waf b/ns/ext/string-port/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/string-port/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/string-port/wscript b/ns/ext/string-port/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/string-port/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/time/ext.pc.in b/ns/ext/time/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/time/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/time/manifest.ttl b/ns/ext/time/manifest.ttl
new file mode 100644
index 0000000..2657388
--- /dev/null
+++ b/ns/ext/time/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/time>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <time.ttl> .
+
diff --git a/ns/ext/time/time.h b/ns/ext/time/time.h
new file mode 100644
index 0000000..f3b2e77
--- /dev/null
+++ b/ns/ext/time/time.h
@@ -0,0 +1,131 @@
+/*
+  Copyright 2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file time.h C header for the LV2 Time extension
+   <http://lv2plug.in/ns/ext/time>.
+*/
+
+#ifndef LV2_TIME_H
+#define LV2_TIME_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   Time states.
+*/
+typedef enum {
+	LV2_TIME_STOPPED  = 0,  /**< Transport halted */
+	LV2_TIME_ROLLING  = 1,  /**< Transport playing */
+} LV2_Time_State;
+
+/**
+   Bits indicating properties of an LV2_Time_Position.
+*/
+typedef enum {
+	LV2_TIME_HAS_BBT = 1  /**< Has Bar, Beat, Tick */
+} LV2_Time_Flags;
+
+/**
+   Description of a position and/or tempo.
+
+   This struct is used as the payload of an event to notify the plugin about
+   time state, such as position and tempo.
+*/
+typedef struct {
+	/**
+	   @{
+	   @name Mandatory Fields
+	*/
+
+	/**
+	   Frame number on the timeline.
+	*/
+	uint64_t frame;
+
+	/**
+	   Bit field of LV2_Time_Flags values indicating which fields
+	   of this struct are valid.
+	*/
+	uint32_t flags;
+
+	/**
+	   Transport state.
+	*/
+	LV2_Time_State state;
+
+	/**
+	   @}
+	   @{
+	   @name LV2_TIME_BBT fields
+	   These fields are valid iff the LV2_TIME_BBT bit is set in @ref flags.
+	*/
+
+	/**
+	   Current bar.
+	   The first bar is number 0 (but should be represented in a UI as bar 1).
+	*/
+	int64_t bar;
+
+	/**
+	   Beat within the current bar.
+	   The first beat is number 0.
+	   Always <= @ref beats_per_bar.
+	*/
+	int32_t beat;
+
+	/**
+	   Tick within the current beat.
+	   The first tick is number 0.
+	   Always <= @ref ticks_per_beat.
+	*/
+	int32_t tick;
+
+	/**
+	   Number of beats per bar (top of time signature).
+	*/
+	int32_t beats_per_bar;
+
+	/**
+	   Type of note that counts as one beat (bottom of time signature).
+	*/
+	int32_t beat_type;
+
+	/**
+	   Number of ticks per beat.
+	   Typically this is a large integer with many even divisors.
+	*/
+	int32_t ticks_per_beat;
+
+	/**
+	   Current tempo, in beats per minute.
+	*/
+	double beats_per_minute;
+
+	/**
+	   @}
+	*/
+} LV2_Time_Position;
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* LV2_TIME_H */
diff --git a/ns/ext/time/time.ttl b/ns/ext/time/time.ttl
new file mode 100644
index 0000000..40bfdbb
--- /dev/null
+++ b/ns/ext/time/time.ttl
@@ -0,0 +1,57 @@
+# LV2 Time Extension
+# Copyright 2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix time: <http://lv2plug.in/ns/ext/time#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@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 xsd:  <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/ext/time>
+	a lv2:Specification ;
+	doap:name "LV2 Time" ;
+	doap:shortdesc "A data type for transport speed and position." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.rdf>
+	] ;
+	lv2:documentation """
+<p>This extension defines a structure type, LV2_Time_Position, which
+describes a tempo and position along a timeline.  This can be used as
+an event payload by the host to notify plugins about the current
+tempo and position.</p>
+""" .
+
+time:Position
+	a rdfs:Class ;
+	rdfs:label "LV2 time position" ;
+	lv2:documentation """
+<p>Type for an LV2_Time_Position struct.  This can be mapped to an integer and
+used as the type field of an event to indicate that the event payload is an
+LV2_Time_Positon struct.  Plugins SHOULD indicate that a port supports time
+information using the ev:supports predicate, e.g.:</p>
+<pre class="turtle-code">
+&lt;plugin&gt; lv2:port [
+    a lv2:InputPort , ev:EventPort ;
+    lv2:name "control" ;
+    lv2:index 0 ;
+    ev:supportsEvent time:Position
+] .
+</pre>
+""" .
diff --git a/ns/ext/time/waf b/ns/ext/time/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/time/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/time/wscript b/ns/ext/time/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/time/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/ui-resize/ext.pc.in b/ns/ext/ui-resize/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/ui-resize/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/ui-resize/manifest.ttl b/ns/ext/ui-resize/manifest.ttl
new file mode 100644
index 0000000..ca5cdf9
--- /dev/null
+++ b/ns/ext/ui-resize/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/ui-resize>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <ui-resize.ttl> .
+
diff --git a/ns/ext/ui-resize/ui-resize.h b/ns/ext/ui-resize/ui-resize.h
new file mode 100644
index 0000000..cf5ccc6
--- /dev/null
+++ b/ns/ext/ui-resize/ui-resize.h
@@ -0,0 +1,58 @@
+/*
+  Copyright 2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_UI_RESIZE_H
+#define LV2_UI_RESIZE_H
+
+#define LV2_UI_RESIZE_URI "http://lv2plug.in/ns/ext/ui-resize"
+
+typedef void* LV2_UI_Resize_Feature_Data;
+
+/**
+   UI Resize Feature.
+
+   This structure may be used in two ways: as a feature passed by the host
+   (e.g. via the features parameter of LV2UI_Descriptor::instantiate()) or
+   as a feature exposed by a UI (e.g. via LV2UI_Descriptor::extension_data()).
+
+   In both cases, the URI to be used is
+   http://lv2plug.in/ns/ext/ui-resize#UIResize
+*/
+typedef struct {
+
+	LV2_UI_Resize_Feature_Data data;
+
+	/**
+	   Request or notify a size change.
+
+	   When this struct is provided by the host, the UI may call this
+	   function to notify the host that a size change is desired, or notify
+	   the host of the initial size of the UI.
+
+	   When this struct is provided by the plugin, the host may call this
+	   function in the UI thread to notify the UI that it should change its
+	   size to the given dimensions.
+
+	   @return 0 on success.
+	*/
+	int (*ui_resize)(LV2_UI_Resize_Feature_Data data,
+	                 int                        width,
+	                 int                        height);
+
+} LV2_UI_Resize_Feature;
+
+#endif  /* LV2_UI_RESIZE_H */
+
diff --git a/ns/ext/ui-resize/ui-resize.ttl b/ns/ext/ui-resize/ui-resize.ttl
new file mode 100644
index 0000000..5e2a5a8
--- /dev/null
+++ b/ns/ext/ui-resize/ui-resize.ttl
@@ -0,0 +1,43 @@
+# LV2 UI Resize Extension
+# Copyright 2011 David Robillard <d@drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix uirsz: <http://lv2plug.in/ns/ext/ui-resize#> .
+@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 xsd:   <http://www.w3.org/2001/XMLSchema#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/ui-resize>
+	a lv2:Specification ;
+	doap:name "LV2 UI Resize Extension" ;
+	doap:shortdesc "A feature for self-resizing plugin UIs." ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	lv2:documentation """
+<p>An extension that allows LV2 plugin UIs to notify the host about size
+changes, or for the host to notify plugin UIs about size changes.</p>
+""" .
+
+uirsz:UIResize
+	a lv2:Feature ;
+	lv2:documentation """
+<p>A feature that allows the UI to notify the host about its current size, or
+request a size change.  This feature corresponds to the LV2_UI_Resize_Feature
+struct, which should be passed with the feature URI
+<code>http://lv2plug.in/ns/ext/ui-resize#UIResize</code>.  This struct may also
+be provided by the UI as extension data using the same URI, in which case it
+is used by the host to request that the UI change its size.</p>
+""" .
diff --git a/ns/ext/ui-resize/waf b/ns/ext/ui-resize/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/ui-resize/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/ui-resize/wscript b/ns/ext/ui-resize/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/ui-resize/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/uri-map/ext.pc.in b/ns/ext/uri-map/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/uri-map/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/uri-map/manifest.ttl b/ns/ext/uri-map/manifest.ttl
new file mode 100644
index 0000000..eb78686
--- /dev/null
+++ b/ns/ext/uri-map/manifest.ttl
@@ -0,0 +1,8 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/uri-map>
+	a lv2:Specification ;
+	lv2:minorVersion 1 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <uri-map.ttl> .
diff --git a/ns/ext/uri-map/uri-map.h b/ns/ext/uri-map/uri-map.h
new file mode 100644
index 0000000..6767cd1
--- /dev/null
+++ b/ns/ext/uri-map/uri-map.h
@@ -0,0 +1,92 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file
+   C header for the LV2 URI Map extension <http://lv2plug.in/ns/ext/uri-map>.
+ 
+   This extension defines a simple mechanism for plugins to map URIs to
+   integers, usually for performance reasons (e.g. processing events typed by
+   URIs in real time). The expected use case is for plugins to map URIs to
+   integers for things they 'understand' at instantiation time, and store those
+   values for use in the audio thread without doing any string comparison.
+   This allows the extensibility of RDF with the performance of integers (or
+   centrally defined enumerations).
+*/
+
+#ifndef LV2_URI_MAP_H
+#define LV2_URI_MAP_H
+
+#define LV2_URI_MAP_URI "http://lv2plug.in/ns/ext/uri-map"
+
+#include <stdint.h>
+
+/**
+   Opaque pointer to host data.
+*/
+typedef void* LV2_URI_Map_Callback_Data;
+
+/**
+   URI Map Feature.
+ 
+   To support this feature the host must pass an LV2_Feature struct to the
+   plugin's instantiate method with URI "http://lv2plug.in/ns/ext/uri-map"
+   and data pointed to an instance of this struct.
+*/
+typedef struct {
+
+	/**
+	   Opaque pointer to host data.
+	 
+	   The plugin MUST pass this to any call to functions in this struct.
+	   Otherwise, it must not be interpreted in any way.
+	*/
+	LV2_URI_Map_Callback_Data callback_data;
+
+	/**
+	   Get the numeric ID of a URI from the host.
+	 
+	   @param callback_data Must be the callback_data member of this struct.
+	   @param map The 'context' of this URI. Certain extensions may define a
+	   URI that must be passed here with certain restrictions on the return
+	   value (e.g. limited range). This value may be NULL if the plugin needs
+	   an ID for a URI in general. Extensions SHOULD NOT define a context
+	   unless there is a specific need to do so, e.g. to restrict the range of
+	   the returned value.
+	   @param uri The URI to be mapped to an integer ID.
+	 
+	   This function is referentially transparent; any number of calls with the
+	   same arguments is guaranteed to return the same value over the life of a
+	   plugin instance (though the same URI may return different values with a
+	   different map parameter). However, this function is not necessarily very
+	   fast: plugins SHOULD cache any IDs they might need in performance
+	   critical situations.
+	   
+	   The return value 0 is reserved and indicates that an ID for that URI
+	   could not be created for whatever reason. Extensions MAY define more
+	   precisely what this means in a certain context, but in general plugins
+	   SHOULD handle this situation as gracefully as possible. However, hosts
+	   SHOULD NOT return 0 from this function in non-exceptional circumstances
+	   (e.g. the URI map SHOULD be dynamic). Hosts that statically support only
+	   a fixed set of URIs should not expect plugins to function correctly.
+	*/
+	uint32_t (*uri_to_id)(LV2_URI_Map_Callback_Data callback_data,
+	                      const char*               map,
+	                      const char*               uri);
+
+} LV2_URI_Map_Feature;
+
+#endif /* LV2_URI_MAP_H */
diff --git a/ns/ext/uri-map/uri-map.ttl b/ns/ext/uri-map/uri-map.ttl
new file mode 100644
index 0000000..b0a5399
--- /dev/null
+++ b/ns/ext/uri-map/uri-map.ttl
@@ -0,0 +1,57 @@
+# LV2 URI Map Extension
+# Copyright 2008-2011 David Robillard <http://drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
+@prefix owl:   <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix umap:  <http://lv2plug.in/ns/ext/uri-map#> .
+
+<http://lv2plug.in/ns/ext/uri-map>
+	a lv2:Specification ,
+		lv2:Feature ;
+	owl:deprecated true ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 URI Map" ;
+	doap:shortdesc "A feature for mapping URIs to integers." ;
+	doap:release [
+		doap:revision "1.2" ;
+		doap:created "2011-05-26"
+	] ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.xrdf>
+	] , [
+		a foaf:Person ;
+		foaf:name "Lars Luthman"
+	] ;
+	lv2:documentation """
+<p><span class="warning">This extension is deprecated.</span> New
+implementations should use <a href="http://lv2plug.in/ns/ext/urid">LV2 URID</a>
+instead.</p>
+
+<p>This extension defines a simple mechanism for plugins to map URIs to
+integers, usually for performance reasons (e.g. processing events typed by URIs
+in real time).  The expected use case is for plugins to map URIs to integers
+for things they 'understand' at instantiation time, and store those values for
+use in the audio thread without doing any string comparison.  This allows the
+extensibility of RDF with the performance of integers (or centrally defined
+enumerations).</p>
+""" .
diff --git a/ns/ext/uri-map/waf b/ns/ext/uri-map/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/uri-map/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/uri-map/wscript b/ns/ext/uri-map/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/uri-map/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/uri-unmap/ext.pc.in b/ns/ext/uri-unmap/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/uri-unmap/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/uri-unmap/manifest.ttl b/ns/ext/uri-unmap/manifest.ttl
new file mode 100644
index 0000000..217e7b6
--- /dev/null
+++ b/ns/ext/uri-unmap/manifest.ttl
@@ -0,0 +1,8 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/ext/uri-unmap>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <uri-unmap.ttl> .
diff --git a/ns/ext/uri-unmap/uri-unmap.h b/ns/ext/uri-unmap/uri-unmap.h
new file mode 100644
index 0000000..d6cb900
--- /dev/null
+++ b/ns/ext/uri-unmap/uri-unmap.h
@@ -0,0 +1,81 @@
+/* lv2_uri_unmap.h - C header file for the LV2 URI Unmap extension.
+ *
+ * Copyright (C) 2010 David Robillard <http://drobilla.net>
+ *
+ * This header is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This header 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this header; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 01222-1307 USA
+ */
+
+/** @file
+ * C header for the LV2 URI Map extension <http://lv2plug.in/ns/ext/uri-unmap>.
+ */
+
+#ifndef LV2_URI_UNMAP_H
+#define LV2_URI_UNMAP_H
+
+#define LV2_URI_UNMAP_URI "http://lv2plug.in/ns/ext/uri-unmap"
+
+#include <stdint.h>
+
+
+/** Opaque pointer to host data. */
+typedef void* LV2_URI_Unmap_Callback_Data;
+
+
+/** The data field of the LV2_Feature for the URI Unmap extension.
+ *
+ * To support this extension the host must pass an LV2_Feature struct to the
+ * plugin's instantiate method with URI "http://lv2plug.in/ns/ext/uri-unmap"
+ * and data pointed to an instance of this struct.
+ */
+typedef struct {
+
+	/** Opaque pointer to host data.
+	 *
+	 * The plugin MUST pass this to any call to functions in this struct.
+	 * Otherwise, it must not be interpreted in any way.
+	 */
+	LV2_URI_Unmap_Callback_Data callback_data;
+
+	/** Get the numeric ID of a URI from the host.
+	 *
+	 * @param callback_data Must be the callback_data member of this struct.
+	 * @param map The 'context' used to map this URI.
+	 * @param id The URI ID to unmap.
+	 * @return The string form of @a id, or NULL on error.
+	 *
+	 * The @a id MUST be a value previously returned from
+	 * LV2_Uri_Map_Feature.uri_to_id.
+	 *
+	 * The returned string is owned by the host and MUST NOT be freed by
+	 * the plugin or stored for a long period of time (e.g. across run
+	 * invocations) without copying.
+	 *
+	 * This function is referentially transparent - any number of calls with
+	 * the same arguments is guaranteed to return the same value over the life
+	 * of a plugin instance (though the same ID may return different values
+	 * with a different map parameter).
+	 *
+	 * This function may be called from any non-realtime thread, possibly
+	 * concurrently (hosts may simply use a mutex to meet these requirements).
+	 */
+	const char* (*id_to_uri)(LV2_URI_Unmap_Callback_Data callback_data,
+	                         const char*                 map,
+	                         uint32_t                    id);
+
+} LV2_URI_Unmap_Feature;
+
+
+#endif /* LV2_URI_UNMAP_H */
+
diff --git a/ns/ext/uri-unmap/uri-unmap.ttl b/ns/ext/uri-unmap/uri-unmap.ttl
new file mode 100644
index 0000000..053bb37
--- /dev/null
+++ b/ns/ext/uri-unmap/uri-unmap.ttl
@@ -0,0 +1,46 @@
+# LV2 URI Unmap Extension
+# Copyright (C) 2010 David Robillard <d@drobilla.net>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+@prefix unmap: <http://lv2plug.in/ns/ext/uri-unmap#> .
+@prefix lv2:   <http://lv2plug.in/ns/lv2core#> .
+@prefix lv2ev: <http://lv2plug.in/ns/ext/event#> .
+@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/ext/uri-unmap> a lv2:Specification , lv2:Feature ;
+	doap:license <http://usefulinc.com/doap/licenses/mit> ;
+	doap:name "LV2 URI Unmap" ;
+	doap:shortdesc "A feature for unmapping URIs from integers." ;
+	doap:maintainer [
+		a foaf:Person ;
+		foaf:name "David Robillard" ;
+		foaf:homepage <http://drobilla.net/> ;
+		rdfs:seeAlso <http://drobilla.net/drobilla.xrdf>
+	] ;
+    lv2:documentation """
+<p>This extension is the opposite of the <a
+href="http://lv2plug.in/ns/ext/uri-map" >LV2 URI Map</a> extension.  It allows
+the host to pass an id_to_uri function to the plugin which can be used for
+unmapping an integer (previously mapped using the URI map extension's
+uri_to_id) back to a string.</p>""" .
+
diff --git a/ns/ext/uri-unmap/waf b/ns/ext/uri-unmap/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/uri-unmap/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/uri-unmap/wscript b/ns/ext/uri-unmap/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/uri-unmap/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/ext/urid/ext.pc.in b/ns/ext/urid/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/ext/urid/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/ext/urid/manifest.ttl b/ns/ext/urid/manifest.ttl
new file mode 100644
index 0000000..c77aff6
--- /dev/null
+++ b/ns/ext/urid/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix urid: <http://lv2plug.in/ns/ext/urid#> .
+
+<http://lv2plug.in/ns/ext/urid>
+	a lv2:Specification ;
+	lv2:minorVersion 0 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <urid.ttl> .
diff --git a/ns/ext/urid/urid.h b/ns/ext/urid/urid.h
new file mode 100644
index 0000000..d36d0dd
--- /dev/null
+++ b/ns/ext/urid/urid.h
@@ -0,0 +1,113 @@
+/*
+  Copyright 2011 Gabriel M. Beddingfield <gabrbedd@gmail.com>
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file
+   C header for the LV2 URID extension <http://lv2plug.in/ns/ext/urid>
+*/
+
+#ifndef LV2_URID_H
+#define LV2_URID_H
+
+#define LV2_URID_URI "http://lv2plug.in/ns/ext/urid"
+
+#include <stdint.h>
+
+/**
+   Opaque pointer to host data for LV2_URID_Map.
+*/
+typedef void* LV2_URID_Map_Handle;
+
+/**
+   Opaque pointer to host data for LV2_URID_Unmap.
+*/
+typedef void* LV2_URID_Unmap_Handle;
+
+/**
+   URI mapped to an integer.
+*/
+typedef uint32_t LV2_URID;
+
+/**
+   URI Map (http://lv2plug.in/ns/ext/urid#map).
+*/
+typedef struct {
+	/**
+	   Opaque pointer to host data.
+
+	   This MUST be passed to map_uri() whenever it is called.
+	   Otherwise, it must not be interpreted in any way.
+	*/
+	LV2_URID_Map_Handle handle;
+
+	/**
+	   Get the numeric ID of a URI.
+
+	   If the ID does not already exist, it will be created.
+
+	   This function is referentially transparent; any number of calls with the
+	   same arguments is guaranteed to return the same value over the life of a
+	   plugin instance.  Note, however, that several URIs MAY resolve to the
+	   same ID if the host considers those URIs equivalent.
+
+	   This function is not necessarily very fast or RT-safe: plugins SHOULD
+	   cache any IDs they might need in performance critical situations.
+
+	   The return value 0 is reserved and indicates that an ID for that URI
+	   could not be created for whatever reason.  However, hosts SHOULD NOT
+	   return 0 from this function in non-exceptional circumstances (i.e. the
+	   URI map SHOULD be dynamic).
+
+	   @param handle Must be the callback_data member of this struct.
+	   @param uri The URI to be mapped to an integer ID.
+	*/
+	LV2_URID (*map)(LV2_URID_Map_Handle handle,
+	                const char*         uri);
+} LV2_URID_Map;
+
+/**
+   URI Unmap (http://lv2plug.in/ns/ext/urid#unmap).
+*/
+typedef struct {
+	/**
+	   Opaque pointer to host data.
+
+	   This MUST be passed to unmap() whenever it is called.
+	   Otherwise, it must not be interpreted in any way.
+	*/
+	LV2_URID_Unmap_Handle handle;
+
+	/**
+	   Get the URI for a previously mapped numeric ID.
+
+	   Returns NULL if @c urid is not yet mapped.  Otherwise, the corresponding
+	   URI is returned in a canonical form.  This MAY not be the exact same
+	   string that was originally passed to LV2_URID_Map::map(), but it MUST be
+	   an identical URI according to the URI syntax specification (RFC3986).  A
+	   non-NULL return for a given @c urid will always be the same for the life
+	   of the plugin.  Plugins that intend to perform string comparison on
+	   unmapped URIs SHOULD first canonicalise URI strings with a call to
+	   map_uri() followed by a call to unmap_uri().
+
+	   @param handle Must be the callback_data member of this struct.
+	   @param urid The ID to be mapped back to the URI string.
+	*/
+	const char* (*unmap)(LV2_URID_Unmap_Handle handle,
+	                     LV2_URID              urid);
+} LV2_URID_Unmap;
+
+#endif /* LV2_URID_H */
diff --git a/ns/ext/urid/urid.ttl b/ns/ext/urid/urid.ttl
new file mode 100644
index 0000000..a87b368
--- /dev/null
+++ b/ns/ext/urid/urid.ttl
@@ -0,0 +1,67 @@
+# LV2 URID Extension
+# Copyright 2011 Gabriel M. Beddingfield <gabrbedd@gmail.com>
+# Copyright 2008-2011 David Robillard <http://drobilla.net>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix urid: <http://lv2plug.in/ns/ext/urid#> .
+
+<http://lv2plug.in/ns/ext/urid>
+	a lv2:Specification ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 URID" ;
+	doap:shortdesc "Features for mapping URIs to and from integers." ;
+	doap:release [
+		doap:revision "0.2" ;
+		doap:created "2011-01-04"
+	] ;
+	doap:developer [
+		a foaf:Person ;
+		foaf:name "Gabriel M. Beddingfield" ;
+		foaf:homepage <http://gabe.is-a-geek.org/>
+	] ;
+	lv2:documentation """
+<p>This extension defines a simple mechanism for plugins to map URIs to and
+from integers, usually for performance reasons (e.g. processing events typed by
+URIs in real time).  Typically, plugins map URIs to integers for things they
+"understand" at instantiation time, and store those values for use in the audio
+thread without doing any string comparison.  This allows for the extensibility
+of RDF but with the performance of integers.</p>
+
+<p>This extension is intended as an improved and simpler replacement for the <a
+href="http://lv2plug.in/ns/ext/uri-map">uri-map</a> extension, since the
+<q>map</q> context parameter has been found problematic.</p>
+""" .
+
+urid:map
+	a lv2:Feature ;
+	lv2:documentation """
+<p>A feature which is used to map URIs to integers.  To support this feature,
+the host must pass an LV2_Feature to LV2_Descriptor::instantiate() with
+<em>URI</em> <q>http://lv2plug.in/ns/ext/urid#map</q> and <em>data</em> pointed
+to an instance of LV2_URID_Map.</p>
+""" .
+
+urid:unmap
+	a lv2:Feature ;
+	lv2:documentation """
+<p>A feature which is used to unmap URIs previously mapped to integers by
+urid:map.  To support this feature, the host must pass an LV2_Feature to
+LV2_Descriptor::instantiate() with <em>URI</em>
+<q>http://lv2plug.in/ns/ext/urid#unmap</q> and <em>data</em> pointed to an
+instance of LV2_URID_Unmap.</p>
+""" .
diff --git a/ns/ext/urid/waf b/ns/ext/urid/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/ext/urid/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/ext/urid/wscript b/ns/ext/urid/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/ext/urid/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/extensions/ui/ext.pc.in b/ns/extensions/ui/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/extensions/ui/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/extensions/ui/lv2-ui.doap.ttl b/ns/extensions/ui/lv2-ui.doap.ttl
new file mode 100644
index 0000000..44b135d
--- /dev/null
+++ b/ns/extensions/ui/lv2-ui.doap.ttl
@@ -0,0 +1,62 @@
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/extensions/ui>
+	a doap:Project ;
+	doap:license <http://opensource.org/licenses/isc-license> ;
+	doap:name "LV2 UI" ;
+	doap:shortdesc "Generic UI interface for LV2 plugins." ;
+	doap:developer [
+		a foaf:Person ;
+		foaf:name "Lars Luthman" ;
+		foaf:mbox <mailto:lars.luthman@gmail.com>
+	] ;
+	doap:maintainer <http://drobilla.net/drobilla#me> ;
+	doap:release [
+		doap:revision "2.3" ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Deprecate ui:makeSONameResident."
+			] , [
+				rdfs:label "Add Qt4 and X11 widget types."
+			] , [
+				rdfs:label "Install header to URI-based system path."
+			] , [
+				rdfs:label "Add pkg-config file."
+			] , [
+				rdfs:label "Make ui.ttl a valid OWL 2 DL ontology."
+			]
+		]
+	] , [
+		doap:revision "2.2" ;
+		doap:created "2011-05-26" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-ui-2.2.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Convert documentation to HTML and use lv2:documentation."
+			] , [
+				rdfs:label "Use lv2:Specification to be discovered as an extension."
+			]
+		]
+	] , [
+		doap:revision "2.0" ;
+		doap:created "2010-10-06" ;
+		doap:file-release <http://lv2plug.in/spec/lv2-ui-2.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial release."
+			]
+		]
+	] .
diff --git a/ns/extensions/ui/manifest.ttl b/ns/extensions/ui/manifest.ttl
new file mode 100644
index 0000000..febbaad
--- /dev/null
+++ b/ns/extensions/ui/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/extensions/ui>
+	a lv2:Specification ;
+	lv2:minorVersion 2 ;
+	lv2:microVersion 3 ;
+	rdfs:seeAlso <ui.ttl> ,
+		<lv2-ui.doap.ttl> .
diff --git a/ns/extensions/ui/ui.h b/ns/extensions/ui/ui.h
new file mode 100644
index 0000000..6d64a0d
--- /dev/null
+++ b/ns/extensions/ui/ui.h
@@ -0,0 +1,247 @@
+/*
+  LV2 UI Extension
+  Copyright 2009-2011 David Robillard <d@drobilla.net>
+  Copyright 2006-2008 Lars Luthman <lars.luthman@gmail.com>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+ * @file
+ * C header for the LV2 UI extension <http://lv2plug.in/ns/extensions/ui>.
+ */
+
+#ifndef LV2_UI_H
+#define LV2_UI_H
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+#define LV2_UI_URI "http://lv2plug.in/ns/extensions/ui"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   A pointer to some widget or other type of UI handle.
+
+   The actual type is defined by the type URI of the UI.  All the functionality
+   provided by this extension is toolkit independent, the host only needs to
+   pass the necessary callbacks and display the widget, if possible.  Plugins
+   may have several UIs, in various toolkits.
+*/
+typedef void* LV2UI_Widget;
+
+/**
+   A pointer to a particular instance of a UI.
+
+   It is valid to compare this to NULL (0 for C++) but otherwise the host MUST
+   not attempt to interpret it.  The UI plugin may use it to reference internal
+   instance data.
+*/
+typedef void* LV2UI_Handle;
+
+/**
+   A pointer to a particular plugin controller, provided by the host.
+
+   It is valid to compare this to NULL (0 for C++) but otherwise the UI plugin
+   MUST NOT attempt to interpret it.  The host may use it to reference internal
+   instance data.
+*/
+typedef void* LV2UI_Controller;
+
+/**
+   The type of the host-provided function that the UI can use to
+   send data to a plugin's input ports.
+
+   The @c buffer parameter must point to a block of data, @c buffer_size bytes
+   large.  The contents of this buffer and what the host should do with it
+   depends on the value of the @c format parameter.
+
+   The @c format parameter should either be 0 or a numeric ID for a "Transfer
+   mechanism".  Transfer mechanisms are Features and may be defined in
+   meta-extensions.  They specify how to translate the data buffers passed to
+   this function to input data for the plugin ports.  If a UI wishes to write
+   data to an input port, it must list a transfer mechanism Feature for that
+   port's class as an optional or required feature (depending on whether the UI
+   will work without being able to write to that port or not).  The only
+   exception is when the UI wants to write single float values to input ports
+   of the class lv2:ControlPort, in which case @c buffer_size should always be
+   4, the buffer should always contain a single IEEE-754 float, and @c format
+   should be 0.
+
+   The numeric IDs for the transfer mechanisms are provided by a URI-to-integer
+   mapping function provided by the host, using the URI Map feature
+   <http://lv2plug.in/ns/ext/uri-map> with the map URI
+   "http://lv2plug.in/ns/extensions/ui".  Thus a UI that requires transfer
+   mechanism features also requires the URI Map feature, but this is implicit -
+   the UI does not have to list the URI map feature as a required or optional
+   feature in it's RDF data.
+
+   An UI MUST NOT pass a @c format parameter value (except 0) that has not been
+   returned by the host-provided URI mapping function for a host-supported
+   transfer mechanism feature URI.
+
+   The UI MUST NOT try to write to a port for which there is no specified
+   transfer mechanism, or to an output port.  The UI is responsible for
+   allocating the buffer and deallocating it after the call.
+*/
+typedef void (*LV2UI_Write_Function)(LV2UI_Controller controller,
+                                     uint32_t         port_index,
+                                     uint32_t         buffer_size,
+                                     uint32_t         format,
+                                     const void*      buffer);
+
+/**
+   The implementation of a UI.
+
+   A pointer to an object of this type is returned by the lv2ui_descriptor()
+   function.
+*/
+typedef struct _LV2UI_Descriptor {
+  /**
+     The URI for this UI (not for the plugin it controls).
+  */
+  const char* URI;
+
+  /**
+     Create a new UI object and return a handle to it.  This function works
+     similarly to the instantiate() member in LV2_Descriptor.
+
+     @param descriptor The descriptor for the UI that you want to instantiate.
+
+     @param plugin_uri The URI of the plugin that this UI will control.
+
+     @param bundle_path The path to the bundle containing the RDF data file
+     that references this shared object file, including the trailing '/'.
+
+     @param write_function A function provided by the host that the UI can use
+     to send data to the plugin's input ports.
+
+     @param controller A handle for the plugin instance that should be passed
+     as the first parameter of @c write_function.
+
+     @param widget A pointer to an LV2UI_Widget.  The UI will write a widget
+     pointer to this location (what type of widget depends on the RDF class of
+     the UI) that will be the main UI widget.
+
+     @param features An array of LV2_Feature pointers.  The host must pass all
+     feature URIs that it and the UI supports and any additional data, just
+     like in the LV2 plugin instantiate() function.  Note that UI features and
+     plugin features are NOT necessarily the same, they just share the same
+     data structure - this will probably not be the same array as the one the
+     plugin host passes to a plugin.
+
+  */
+  LV2UI_Handle (*instantiate)(const struct _LV2UI_Descriptor* descriptor,
+                              const char*                     plugin_uri,
+                              const char*                     bundle_path,
+                              LV2UI_Write_Function            write_function,
+                              LV2UI_Controller                controller,
+                              LV2UI_Widget*                   widget,
+                              const LV2_Feature* const*       features);
+
+
+  /**
+     Destroy the UI object and the associated widget. The host must not try
+     to access the widget after calling this function.
+   */
+  void (*cleanup)(LV2UI_Handle ui);
+
+  /**
+     Tell the UI that something interesting has happened at a plugin port.
+
+     What is interesting and how it is written to the buffer passed to this
+     function is defined by the @c format parameter, which has the same meaning
+     as in LV2UI_Write_Function.  The only exception is ports of the class
+     lv2:ControlPort, for which this function should be called when the port
+     value changes (it does not have to be called for every single change if
+     the host's UI thread has problems keeping up with the thread the plugin is
+     running in), @c buffer_size should be 4, the buffer should contain a
+     single IEEE-754 float, and @c format should be 0.
+
+     By default, the host should only call this function for input ports of the
+     lv2:ControlPort class.  However, the default setting can be modified by
+     using the following URIs in the UI's RDF data:
+     <pre>
+     uiext:portNotification
+     uiext:noPortNotification
+     uiext:plugin
+     uiext:portIndex
+     </pre>
+     For example, if you want the UI with uri
+     <code><http://my.pluginui></code> for the plugin with URI
+     <code><http://my.plugin></code> to get notified when the value of the
+     output control port with index 4 changes, you would use the following
+     in the RDF for your UI:
+     <pre>
+     <http://my.pluginui> uiext:portNotification [ uiext:plugin <http://my.plugin> ;
+     uiext:portIndex 4 ] .
+     </pre>
+     and similarly with <code>uiext:noPortNotification</code> if you wanted
+     to prevent notifications for a port for which it would be on by default
+     otherwise. The UI is not allowed to request notifications for ports of
+     types for which no transfer mechanism is specified, if it does it should
+     be considered broken and the host should not load it.
+
+     The @c buffer is only valid during the time of this function call, so if
+     the UI wants to keep it for later use it has to copy the contents to an
+     internal buffer.
+
+     This member may be set to NULL if the UI is not interested in any
+     port events.
+  */
+  void (*port_event)(LV2UI_Handle ui,
+                     uint32_t     port_index,
+                     uint32_t     buffer_size,
+                     uint32_t     format,
+                     const void*  buffer);
+
+  /**
+     Return a data structure associated with an extension URI, for example
+     a struct containing additional function pointers.
+
+     Avoid returning function pointers directly since standard C/C++ has no
+     valid way of casting a void* to a function pointer. This member may be set
+     to NULL if the UI is not interested in supporting any extensions. This is
+     similar to the extension_data() member in LV2_Descriptor.
+  */
+  const void* (*extension_data)(const char* uri);
+
+} LV2UI_Descriptor;
+
+/**
+   A plugin UI programmer must include a function called "lv2ui_descriptor"
+   with the following function prototype within the shared object file.  This
+   function will have C-style linkage (if you are using C++ this is taken care
+   of by the 'extern "C"' clause at the top of the file).  This function will
+   be accessed by the UI host using the @c dlsym() function and called to get a
+   LV2UI_UIDescriptor for the wanted plugin.
+
+   Just like lv2_descriptor(), this function takes an index parameter.  The
+   index should only be used for enumeration and not as any sort of ID number -
+   the host should just iterate from 0 and upwards until the function returns
+   NULL or a descriptor with an URI matching the one the host is looking for.
+*/
+const LV2UI_Descriptor* lv2ui_descriptor(uint32_t index);
+
+/**
+   The type of the lv2ui_descriptor() function.
+*/
+typedef const LV2UI_Descriptor* (*LV2UI_DescriptorFunction)(uint32_t index);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_UI_H */
diff --git a/ns/extensions/ui/ui.ttl b/ns/extensions/ui/ui.ttl
new file mode 100644
index 0000000..f62569a
--- /dev/null
+++ b/ns/extensions/ui/ui.ttl
@@ -0,0 +1,220 @@
+# LV2 UI Extension
+# Copyright 2009-2011 David Robillard <d@drobilla.net>
+# Copyright 2006-2008 Lars Luthman <lars.luthman@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix ui:   <http://lv2plug.in/ns/extensions/ui#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+
+<http://lv2plug.in/ns/extensions/ui>
+	a owl:Ontology ;
+	owl:imports <http://lv2plug.in/ns/lv2core> ;
+	lv2:documentation """
+<p>This extension defines an interface that can be used in LV2 plugins and
+hosts to create UIs for plugins. The UIs are similar to plugins and reside in
+shared object files in an LV2 bundle.  UIs are associated with a plugin in RDF
+using the triples:</p>
+
+<pre class="turtle-code">
+@prefix ui: &lt;http://lv2plug.in/ns/extensions/ui#&gt; .
+
+&lt;http://my.plugin&gt;   ui:ui     &lt;http://my.pluginui&gt; .
+&lt;http://my.pluginui&gt; a         ui:GtkUI ;
+                     ui:binary &lt;myui.so&gt; .
+</pre>
+
+<p>where &lt;http://my.plugin&gt; is the URI of the plugin,
+&lt;http://my.pluginui&gt; is the URI of the plugin UI and &lt;myui.so&gt; is
+the relative URI to the shared object file.</p>
+
+<p>While it is possible to have the plugin UI and the plugin in the same shared
+object file it is probably a good idea to keep them separate so that hosts that
+don't want UIs don't have to load the UI code.  A UI MUST specify its class in
+the RDF data (ui:GtkUI in the above example). The class defines what type the
+UI is, e.g. what graphics toolkit it uses.  Any type of UI class can be defined
+separately from this extension.</p>
+
+<p>It is possible to have multiple UIs for the same plugin, or to have the UI
+for a plugin in a different bundle from the actual plugin - this way people
+other than the plugin author can write plugin UIs independently without editing
+the original plugin bundle.</p>
+
+<p>Note that the process that loads the shared object file containing the UI
+code and the process that loads the shared object file containing the actual
+plugin implementation are not necessarily the same process (and not even
+necessarily on the same machine).  This means that plugin and UI code can
+<strong>not</strong> use singletons and global variables and expect them to
+refer to the same objects in the UI and the actual plugin. The function
+callback interface defined in this header is the only method of communication
+between UIs and plugin instances (extensions may define more, though this is
+discouraged unless absolutely necessary since the significant benefits of
+network transparency and serialisability are lost).</p>
+
+<p>Since the LV2 specification itself allows for extensions that may add new
+functionality that could be useful to control with a UI, this extension allows
+for meta-extensions that can extend the interface between the UI and the
+host. These extensions mirror the extensions used for plugins - there are
+required and optional "features" that you declare in the RDF data for the
+UI:</p>
+
+<pre class="turtle-code">
+&lt;http://my.pluginui&gt; lv2:requiredFeature &lt;http://my.feature&gt; .
+&lt;http://my.pluginui&gt; lv2:optionalFeature &lt;http://my.feature&gt; .
+</pre>
+
+<p>The rules for a UI with a required or optional feature are identical to
+those of lv2:Plugin instances: if a UI declares a feature as required, the host
+is NOT allowed to load it unless it supports that feature; and if it does
+support a feature, it MUST pass an appropriate LV2_Feature struct to the UI's
+instantiate() method.  These features may be used to specify how to pass
+specific types of data between the UI and the plugin port buffers (see
+LV2UI_Write_Function for details).</p>
+
+<p>UIs written to this specification do not need to be threadsafe - the
+functions defined below may only be called in the same thread the UI main loop
+is running in.</p>
+
+<p>Note that this UI extension is NOT a lv2:Feature. There is no way for a
+plugin to know whether the host that loads it supports UIs or not, and the
+plugin must always work without the UI (although it may be rather useless
+unless it has been configured using the UI in a previous session).  From the
+plugin perspective, control from a UI is the same as control from anywhere else
+(e.g. the host, the user): via ports.</p>
+
+<p>A UI does not have to be a graphical widget, it could just as well be a
+server listening for OSC input or an interface to some sort of hardware device,
+depending on the RDF class of the UI.</p>
+""" .
+
+ui:UI
+	a rdfs:Class ,
+		owl:Class ;
+	rdfs:subClassOf lv2:Resource ;
+	rdfs:label "LV2 UI" ;
+	rdfs:comment "A UI for an LV2 plugin" .
+
+ui:GtkUI
+	a rdfs:Class ,
+		owl:Class ;
+	rdfs:subClassOf ui:UI ;
+	rdfs:comment """
+A UI where the LV2_Widget is a pointer to a Gtk+ 2.0 compatible GtkWidget,
+and the host guarantees that the Gtk+ library has been initialised and the
+Glib main loop is running before a UI of this type is instantiated.""" .
+
+ui:Qt4UI
+	a rdfs:Class ,
+		owl:Class ;
+	rdfs:subClassOf ui:UI ;
+	rdfs:comment """
+A UI where the LV2_Widget is a pointer to a Qt4 compatible QWidget,
+and the host guarantees that the Qt4 library has been initialised and the
+Qt4 main loop is running before a UI of this type is instantiated.""" .
+
+ui:X11UI
+	a rdfs:Class ,
+		owl:Class ;
+	rdfs:subClassOf ui:UI ;
+	rdfs:comment """
+A UI where the LV2_Widget is an X11 window ID.  Note this is actually an
+integer, i.e. the LV2_Widget is not a pointer to an X11 window ID, but should
+be itself taken as an integer value.""" .
+
+ui:makeSONameResident
+	a lv2:Feature ;
+	owl:deprecated "true"^^xsd:boolean ;
+	lv2:documentation """
+<p>DEPRECATED</p>
+
+<p>This feature was intended to support UIs that link against toolkit
+libraries which may not be unloaded during the lifetime of the host.
+This is better achieved by using the appropriate flags when linking the
+UI, e.g. <code>gcc -Wl,nodelete</code>.</p>
+""" .
+
+ui:noUserResize
+	a lv2:Feature ;
+	lv2:documentation """
+<p>If a UI requires this feature it indicates that it does not make sense
+to let the user resize the main widget, and the host should prevent that.
+This feature may not make sense for all UI types. The data pointer for the
+LV2_Feature for this feature should always be set to NULL.</p>
+""" .
+
+ui:fixedSize
+	a lv2:Feature ;
+	lv2:documentation """
+<p>If a UI requires this feature it indicates the same thing as
+ui:noUserResize, and additionally it means that the UI will not resize
+the main widget on its own - it will always remain the same size (e.g. a
+pixmap based GUI). This feature may not make sense for all UI types.
+The data pointer for the LV2_Feature for this feature should always be set
+to NULL.</p>
+""" .
+
+ui:PortNotification
+	a rdfs:Class ,
+		owl:Class ;
+	rdfs:subClassOf [
+		a owl:Restriction ;
+		owl:onProperty ui:plugin ;
+		owl:someValuesFrom lv2:Plugin ;
+		owl:cardinality 1 ;
+		rdfs:comment """
+A PortNotification MUST have exactly one ui:plugin which is a lv2:Plugin.
+"""
+	] , [
+		a owl:Restriction ;
+		owl:onProperty ui:portIndex ;
+		owl:someValuesFrom xsd:decimal ;
+		owl:cardinality 1 ;
+		rdfs:comment """
+A PortNotification MUST have exactly one ui:portIndex which is an xsd:decimal.
+"""
+	] ;
+	rdfs:comment "Port Notification" .
+
+ui:portNotification
+	a rdf:Property ,
+		owl:ObjectProperty ;
+	rdfs:domain ui:UI ;
+	rdfs:range ui:PortNotification ;
+	lv2:documentation """
+<p>Indicates that a UI should receive notification (via
+LV2UI_Descriptor::port_event()) when a particular port's value changes.</p>
+""" .
+
+ui:plugin
+	a rdf:Property ,
+		owl:ObjectProperty ;
+	rdfs:domain ui:PortNotification ;
+	rdfs:range lv2:Plugin ;
+	rdfs:comment """
+The plugin a portNotification applies to.
+""" .
+
+ui:portIndex
+	a rdf:Property ,
+		owl:DatatypeProperty ;
+	rdfs:domain ui:PortNotification ;
+	rdfs:range xsd:decimal ;
+	rdfs:comment """
+The index of the port a portNotification applies to.
+""" .
diff --git a/ns/extensions/ui/waf b/ns/extensions/ui/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/extensions/ui/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/extensions/ui/wscript b/ns/extensions/ui/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/extensions/ui/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/extensions/units/ext.pc.in b/ns/extensions/units/ext.pc.in
new file mode 120000
index 0000000..1cdad2a
--- /dev/null
+++ b/ns/extensions/units/ext.pc.in
@@ -0,0 +1 @@
+../../../ext.pc.in
\ No newline at end of file
diff --git a/ns/extensions/units/manifest.ttl b/ns/extensions/units/manifest.ttl
new file mode 100644
index 0000000..2c41838
--- /dev/null
+++ b/ns/extensions/units/manifest.ttl
@@ -0,0 +1,9 @@
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/extensions/units>
+	a lv2:Specification ;
+	lv2:minorVersion 5 ;
+	lv2:microVersion 2 ;
+	rdfs:seeAlso <units.ttl> .
+
diff --git a/ns/extensions/units/units.ttl b/ns/extensions/units/units.ttl
new file mode 100644
index 0000000..ccd5cf4
--- /dev/null
+++ b/ns/extensions/units/units.ttl
@@ -0,0 +1,346 @@
+# LV2 Units Extension
+# Copyright 2009-2011 David Robillard
+# Copyright 2007 Steve Harris
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix units: <http://lv2plug.in/ns/extensions/units#> .
+@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 doap:  <http://usefulinc.com/ns/doap#> .
+@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
+
+<http://lv2plug.in/ns/extensions/units>
+    a lv2:Specification ;
+    doap:name "LV2 Units" ;
+    doap:shortdesc "Units for LV2 values." ;
+    doap:created "2007-02-06" ;
+    doap:homepage <http://lv2plug.in/ns/extensions/units> ;
+    doap:license <http://opensource.org/licenses/isc-license> ;
+    doap:release [
+        doap:revision "5.2" ;
+        doap:created "2011-08-21"
+    ] ;
+    doap:maintainer [
+        a foaf:Person ;
+        rdfs:seeAlso <http://plugin.org.uk/swh.xrdf> ;
+        foaf:homepage <http://plugin.org.uk/> ;
+        foaf:mbox_sha1sum "44bc4fed584a2d1ac8fc55206db67656165d67fd" ;
+        foaf:name "Steve Harris"
+    ], [
+        a foaf:Person ;
+        rdfs:seeAlso <http://drobilla.net/drobilla.rdf> ;
+        foaf:homepage <http://drobilla.net/> ;
+        foaf:name "David Robillard"
+    ] ;
+    lv2:documentation """
+<p>This extension defines a number of units for use in audio processing.</p>
+
+<p>For example, to say that a gain port's value is in decibels (units:db)</p>
+<pre class="turtle-code">
+@prefix :   &lt;http://lv2plug.in/ns/extensions/units#&gt; .
+@prefix eg: &lt;http://example.org/&gt; .
+
+eg:plugin lv2:port [
+    a            lv2:ControlRateInputPort ;
+    lv2:datatype lv2:Float ;
+    lv2:index    0 ;
+    lv2:symbol   "gain" ;
+    lv2:name     "gain" ;
+    :unit        :db
+] .
+</pre>
+
+<p>Using the same form, plugins may also specify one-off units inline, to give
+better display hints to hosts:</p>
+<pre class="turtle-code">
+eg:plugin lv2:port [
+    a            lv2:ControlRateInputPort ;
+    lv2:datatype lv2:Float ;
+    lv2:index    0 ;
+    lv2:symbol   "frob" ;
+    lv2:name     "frob level" ;
+    units:unit [
+        a            units:Unit ;
+        units:name   "frobnication" ;
+        units:symbol "fr" ;
+        units:render "%f f"
+    ]
+] .
+</pre>
+
+<p>Units are defined by a number of properties:</p>
+<dl>
+<dt>units:name</dt>
+<dd>A display name for the unit (eg. decibels)</dd>
+<dt>units:symbol</dt>
+<dd>The abbreviated symbol for the unit (eg. dB)</dd>
+<dt>units:render</dt>
+<dd>A printf(3) string to be used to render the numerical value (eg. \"%f dB\")</dd>
+<dt>units:conversion</dt>
+<dd>Defines a conversion into another unit, commonly the SI unit for the
+unit class (eg. units:conversion [ units:to units:m ; units:factor 1000 ]).
+conversions are expressed as either factors (multiplicand for the conversion)
+or offsets (addend for the conversion).</dd>
+</dl>
+""" .
+
+units:Unit a rdfs:Class ;
+    rdfs:comment "A unit for LV2 port data" .
+
+units:unit
+    a rdf:Property ;
+    rdfs:domain lv2:Port ;
+    rdfs:range units:Unit ;
+    rdfs:comment "Relates a port to the unit of its data" .
+
+units:s a units:Unit ;
+    units:conversion [
+        units:factor 0.0166666666 ;
+        units:to units:min
+    ] ;
+    units:name "second" ;
+    units:prefixConversion [
+        units:factor 1000 ;
+        units:to units:ms
+    ] ;
+    units:render "%f s" ;
+    units:symbol "s" .
+
+units:ms a units:Unit ;
+    units:name "millisecond" ;
+    units:prefixConversion [
+        units:factor 0.001 ;
+        units:to units:s
+    ] ;
+    units:render "%f ms" ;
+    units:symbol "ms" .
+
+units:min a units:Unit ;
+    units:conversion [
+        units:factor 60.0 ;
+        units:to units:s
+    ] ;
+    units:name "minute" ;
+    units:render "%f mins" ;
+    units:symbol "min" .
+
+units:bar a units:Unit ;
+    units:name "bar" ;
+    units:render "%f bars" ;
+    units:symbol "bars" .
+
+units:beat a units:Unit ;
+    units:name "beat" ;
+    units:render "%f beats" ;
+    units:symbol "beats" .
+
+units:m a units:Unit ;
+    units:conversion [
+        units:factor 39.37 ;
+        units:to units:inch
+    ] ;
+    units:name "metre" ;
+    units:prefixConversion [
+        units:factor 100 ;
+        units:to units:cm
+    ], [
+        units:factor 1000 ;
+        units:to units:mm
+    ], [
+        units:factor 0.001 ;
+        units:to units:km
+    ] ;
+    units:render "%f m" ;
+    units:symbol "m" .
+
+units:cm a units:Unit ;
+    units:conversion [
+        units:factor 0.3937 ;
+        units:to units:inch
+    ] ;
+    units:name "centimetre" ;
+    units:prefixConversion [
+        units:factor 0.01 ;
+        units:to units:m
+    ], [
+        units:factor 10 ;
+        units:to units:mm
+    ], [
+        units:factor 0.00001 ;
+        units:to units:km
+    ] ;
+    units:render "%f cm" ;
+    units:symbol "cm" .
+
+units:mm a units:Unit ;
+    units:conversion [
+        units:factor 0.03937 ;
+        units:to units:inch
+    ] ;
+    units:name "millimetre" ;
+    units:prefixConversion [
+        units:factor 0.001 ;
+        units:to units:m
+    ], [
+        units:factor 0.1 ;
+        units:to units:cm
+    ], [
+        units:factor 0.000001 ;
+        units:to units:km
+    ] ;
+    units:render "%f mm" ;
+    units:symbol "mm" .
+
+units:km a units:Unit ;
+    units:conversion [
+        units:factor 0.62138818 ;
+        units:to units:mile
+    ] ;
+    units:name "kilometre" ;
+    units:prefixConversion [
+        units:factor 1000 ;
+        units:to units:m
+    ], [
+        units:factor 100000 ;
+        units:to units:cm
+    ], [
+        units:factor 1000000 ;
+        units:to units:mm
+    ] ;
+    units:render "%f km" ;
+    units:symbol "km" .
+
+units:inch a units:Unit ;
+    units:conversion [
+        units:factor 2.54 ;
+        units:to units:cm
+    ] ;
+    units:name "inch" ;
+    units:render "%f\"" ;
+    units:symbol "in" .
+
+units:mile a units:Unit ;
+    units:conversion [
+        units:factor 1.6093 ;
+        units:to units:km
+    ] ;
+    units:name "mile" ;
+    units:render "%f mi" ;
+    units:symbol "mi" .
+
+units:db a units:Unit ;
+    units:name "decibel" ;
+    units:render "%f dB" ;
+    units:symbol "dB" .
+
+units:pc a units:Unit ;
+    units:conversion [
+        units:factor 0.01 ;
+        units:to units:coef
+    ] ;
+    units:name "percent" ;
+    units:render "%f%%" ;
+    units:symbol "%" .
+
+units:coef a units:Unit ;
+    units:conversion [
+        units:factor 100 ;
+        units:to units:pc
+    ] ;
+    units:name "coefficient" ;
+    units:render "* %f" ;
+    units:symbol "" .
+
+units:hz a units:Unit ;
+    units:name "hertz" ;
+    units:prefixConversion [
+        units:factor 0.001 ;
+        units:to units:khz
+    ], [
+        units:factor 0.000001 ;
+        units:to units:mhz
+    ] ;
+    units:render "%f Hz" ;
+    units:symbol "Hz" .
+
+units:khz a units:Unit ;
+    units:name "kilohertz" ;
+    units:prefixConversion [
+        units:factor 1000 ;
+        units:to units:hz
+    ], [
+        units:factor 0.001 ;
+        units:to units:mhz
+    ] ;
+    units:render "%f kHz" ;
+    units:symbol "kHz" .
+
+units:mhz a units:Unit ;
+    units:name "megahertz" ;
+    units:prefixConversion [
+        units:factor 1000000 ;
+        units:to units:hz
+    ], [
+        units:factor 0.001 ;
+        units:to units:khz
+    ] ;
+    units:render "%f MHz" ;
+    units:symbol "MHz" .
+
+units:bpm a units:Unit ;
+    units:name "beats per minute" ;
+    units:prefixConversion [
+        units:factor 0.0166666666 ;
+        units:to units:hz
+    ] ;
+    units:render "%f BPM" ;
+    units:symbol "BPM" .
+
+units:oct a units:Unit ;
+    units:conversion [
+        units:factor 12.0 ;
+        units:to units:semitone12TET
+    ] ;
+    units:name "octaves" ;
+    units:render "%f octaves" ;
+    units:symbol "oct" .
+
+units:cent a units:Unit ;
+    units:conversion [
+        units:factor 0.01 ;
+        units:to units:semitone12TET
+    ] ;
+    units:name "cent" ;
+    units:render "%f ct" ;
+    units:symbol "ct" .
+
+units:semitone12TET a units:Unit ;
+    units:conversion [
+        units:factor 0.083333333 ;
+        units:to units:oct
+    ] ;
+    units:name "semitone" ;
+    units:render "%f semi" ;
+    units:symbol "semi" .
+
+units:degree a units:Unit ;
+    units:name "degree" ;
+    units:render "%f deg" ;
+    units:symbol "deg" .
+
+units:midiNote a units:Unit ;
+    units:name "MIDI note" ;
+    units:render "MIDI note %d" ;
+    units:symbol "note" .
diff --git a/ns/extensions/units/waf b/ns/extensions/units/waf
new file mode 120000
index 0000000..917d5c5
--- /dev/null
+++ b/ns/extensions/units/waf
@@ -0,0 +1 @@
+../../../waf
\ No newline at end of file
diff --git a/ns/extensions/units/wscript b/ns/extensions/units/wscript
new file mode 120000
index 0000000..cf8cbae
--- /dev/null
+++ b/ns/extensions/units/wscript
@@ -0,0 +1 @@
+../../../ext.wscript
\ No newline at end of file
diff --git a/ns/index.html.in b/ns/index.html.in
new file mode 100644
index 0000000..4863cb2
--- /dev/null
+++ b/ns/index.html.in
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
+          "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <title>LV2 Specifications</title>
+    <meta http-equiv="Content-Type"
+          content="application/xhtml+xml;charset=utf-8" />
+    <link rel="stylesheet" type="text/css"
+          href="../aux/style.css" />
+  </head>
+  <body>
+    <div id="header">
+      <h1 id="title">LV2 Specifications</h1>
+    </div>
+    <div class="content">
+      <table summary="An index of LV2 specifications">
+        <tr>
+          <th>Name</th>
+          <th>Description</th>
+          <th>Version</th>
+          <th>Date</th>
+          <th>Status</th>
+        </tr>
+        @ROWS@
+      </table>
+    </div>
+    <div id="footer">
+      <div>Generated on @TIME@ by gendoc.py</div>
+    </div>
+  </body>
+</html>
diff --git a/ns/lv2core/AUTHORS b/ns/lv2core/AUTHORS
new file mode 100644
index 0000000..64febf8
--- /dev/null
+++ b/ns/lv2core/AUTHORS
@@ -0,0 +1,13 @@
+LV2 is written and maintained by:
+
+David Robillard <d@drobilla.net>
+Steve Harris <steve@plugin.org.uk>
+
+with the input and help of many others.
+
+LV2 is based on LADSPA, which was by:
+    Paul Barton-Davis
+    Richard W.E. Furse
+    Stefan Westerfeld
+
+Thanks to all members of the free software community who made LV2 possible.
diff --git a/ns/lv2core/COPYING b/ns/lv2core/COPYING
new file mode 100644
index 0000000..c46d5dd
--- /dev/null
+++ b/ns/lv2core/COPYING
@@ -0,0 +1,16 @@
+Copyright 2006-2011 Steve Harris, David Robillard.
+
+Based on LADSPA, Copyright 2000-2002 Richard W.E. Furse,
+Paul Barton-Davis, Stefan Westerfeld.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
\ No newline at end of file
diff --git a/ns/lv2core/ChangeLog b/ns/lv2core/ChangeLog
new file mode 100644
index 0000000..ec7962a
--- /dev/null
+++ b/ns/lv2core/ChangeLog
@@ -0,0 +1,38 @@
+lv2core (UNRELEASED) unstable; urgency=low
+
+  * Add lv2:extensionData and lv2:ExtensionData for plugins to indicate
+    that they support some URI for LV2_Descriptor::extension_data.
+  * Remove lv2config in favour of the convention that extension bundles simply
+    install headers to standard URI-like include paths
+  * Switch to simple BSD-style (ISC) license (with permission of all
+    contributors to lv2.h and its ancestor, ladspa.h)
+
+ -- David Robillard <d@drobilla.net>  UNRELEASED
+
+lv2core (4.0) unstable; urgency=medium
+
+  * Make doap:license suggested, but not required (for wrappers)
+  * Define lv2:binary (MUST be in manifest.ttl)
+  * Define lv2:majorVersion and lv2:minorVersion (MUST be in manifest.ttl)
+  * Define lv2:documentation and use it to document lv2core
+  * Add lv2:FunctionPlugin and lv2:ConstantPlugin classes
+  * Move lv2:AmplifierPlugin under lv2:DynamicsPlugin
+  * Loosen domain of lv2:optionalFeature and lv2:requiredFeature
+    (to allow re-use in extensions)
+  * Add generic lv2:Resource and lv2:PluginBase classes
+  * Fix definition of lv2:minimum etc. (used for values, not scale points)
+  * More precisely define properties with OWL
+  * Move project metadata to manifest
+  * Add lv2:enumeration port property.
+  * Define run() pre-roll special case (sample_count == 0).
+
+ -- David Robillard <d@drobilla.net>  Fri, 18 Mar 2011 23:23:23 -0400
+
+lv2core (3.0) unstable; urgency=low
+
+  * Require that serialisations refer to ports by symbol rather than index.
+  * Minor stylistic changes to lv2.ttl
+  * No header changes
+
+ -- David Robillard <d@drobilla.net>  Sat, 08 Nov 2008 14:27:10 -0500
+
diff --git a/ns/lv2core/Doxyfile b/ns/lv2core/Doxyfile
new file mode 100644
index 0000000..23836b8
--- /dev/null
+++ b/ns/lv2core/Doxyfile
@@ -0,0 +1,1515 @@
+# Doxyfile 1.5.9
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+#       TAG = value [value, ...]
+# For lists items can also be appended using:
+#       TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# This tag specifies the encoding used for all characters in the config file 
+# that follow. The default is UTF-8 which is also the encoding used for all 
+# text before the first occurrence of this tag. Doxygen uses libiconv (or the 
+# iconv built into libc) for the transcoding. See 
+# http://www.gnu.org/software/libiconv for the list of possible encodings.
+
+DOXYFILE_ENCODING      = UTF-8
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded 
+# by quotes) that should identify the project.
+
+PROJECT_NAME           = LV2 Core
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. 
+# This could be handy for archiving the generated documentation or 
+# if some version control system is used.
+
+PROJECT_NUMBER         = 4
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
+# base path where the generated documentation will be put. 
+# If a relative path is entered, it will be relative to the location 
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = ../upload/doc
+
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 
+# 4096 sub-directories (in 2 levels) under the output directory of each output 
+# format and will distribute the generated files over these directories. 
+# Enabling this option can be useful when feeding doxygen a huge amount of 
+# source files, where putting all generated files in the same directory would 
+# otherwise cause performance problems for the file system.
+
+CREATE_SUBDIRS         = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all 
+# documentation generated by doxygen is written. Doxygen will use this 
+# information to generate all constant output in the proper language. 
+# The default language is English, other supported languages are: 
+# Afrikaans, Arabic, Brazilian, Catalan, Chinese, Chinese-Traditional, 
+# Croatian, Czech, Danish, Dutch, Esperanto, Farsi, Finnish, French, German, 
+# Greek, Hungarian, Italian, Japanese, Japanese-en (Japanese with English 
+# messages), Korean, Korean-en, Lithuanian, Norwegian, Macedonian, Persian, 
+# Polish, Portuguese, Romanian, Russian, Serbian, Serbian-Cyrilic, Slovak, 
+# Slovene, Spanish, Swedish, Ukrainian, and Vietnamese.
+
+OUTPUT_LANGUAGE        = English
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will 
+# include brief member descriptions after the members that are listed in 
+# the file and class documentation (similar to JavaDoc). 
+# Set to NO to disable this.
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
+# the brief description of a member or function before the detailed description. 
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
+# brief descriptions will be completely suppressed.
+
+REPEAT_BRIEF           = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator 
+# that is used to form the text in various listings. Each string 
+# in this list, if found as the leading text of the brief description, will be 
+# stripped from the text and the result after processing the whole list, is 
+# used as the annotated text. Otherwise, the brief description is used as-is. 
+# If left blank, the following values are used ("$name" is automatically 
+# replaced with the name of the entity): "The $name class" "The $name widget" 
+# "The $name file" "is" "provides" "specifies" "contains" 
+# "represents" "a" "an" "the"
+
+ABBREVIATE_BRIEF       = 
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
+# Doxygen will generate a detailed section even if there is only a brief 
+# description.
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all 
+# inherited members of a class in the documentation of that class as if those 
+# members were ordinary class members. Constructors, destructors and assignment 
+# operators of the base classes will not be shown.
+
+INLINE_INHERITED_MEMB  = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full 
+# path before files name in the file list and in the header files. If set 
+# to NO the shortest path that makes the file name unique will be used.
+
+FULL_PATH_NAMES        = YES
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
+# can be used to strip a user-defined part of the path. Stripping is 
+# only done if one of the specified strings matches the left-hand part of 
+# the path. The tag can be used to show relative paths in the file list. 
+# If left blank the directory from which doxygen is run is used as the 
+# path to strip.
+
+STRIP_FROM_PATH        = 
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of 
+# the path mentioned in the documentation of a class, which tells 
+# the reader which header file to include in order to use a class. 
+# If left blank only the name of the header file containing the class 
+# definition is used. Otherwise one should specify the include paths that 
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH    = 
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter 
+# (but less readable) file names. This can be useful is your file systems 
+# doesn't support long names like on DOS, Mac, or CD-ROM.
+
+SHORT_NAMES            = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen 
+# will interpret the first line (until the first dot) of a JavaDoc-style 
+# comment as the brief description. If set to NO, the JavaDoc 
+# comments will behave just like regular Qt-style comments 
+# (thus requiring an explicit @brief command for a brief description.)
+
+JAVADOC_AUTOBRIEF      = YES
+
+# If the QT_AUTOBRIEF tag is set to YES then Doxygen will 
+# interpret the first line (until the first dot) of a Qt-style 
+# comment as the brief description. If set to NO, the comments 
+# will behave just like regular Qt-style comments (thus requiring 
+# an explicit \brief command for a brief description.)
+
+QT_AUTOBRIEF           = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen 
+# treat a multi-line C++ special comment block (i.e. a block of //! or /// 
+# comments) as a brief description. This used to be the default behaviour. 
+# The new default is to treat a multi-line C++ comment block as a detailed 
+# description. Set this tag to YES if you prefer the old behaviour instead.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
+# member inherits the documentation from any documented member that it 
+# re-implements.
+
+INHERIT_DOCS           = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce 
+# a new page for each member. If set to NO, the documentation of a member will 
+# be part of the file/class/namespace that contains it.
+
+SEPARATE_MEMBER_PAGES  = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. 
+# Doxygen uses this value to replace tabs by spaces in code fragments.
+
+TAB_SIZE               = 4
+
+# This tag can be used to specify a number of aliases that acts 
+# as commands in the documentation. An alias has the form "name=value". 
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to 
+# put the command \sideeffect (or @sideeffect) in the documentation, which 
+# will result in a user-defined paragraph with heading "Side Effects:". 
+# You can put \n's in the value part of an alias to insert newlines.
+
+ALIASES                = 
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C 
+# sources only. Doxygen will then generate output that is more tailored for C. 
+# For instance, some of the names that are used will be different. The list 
+# of all members will be omitted, etc.
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+# Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
+# sources only. Doxygen will then generate output that is more tailored for 
+# Java. For instance, namespaces will be presented as packages, qualified 
+# scopes will look different, etc.
+
+OPTIMIZE_OUTPUT_JAVA   = NO
+
+# Set the OPTIMIZE_FOR_FORTRAN tag to YES if your project consists of Fortran 
+# sources only. Doxygen will then generate output that is more tailored for 
+# Fortran.
+
+OPTIMIZE_FOR_FORTRAN   = NO
+
+# Set the OPTIMIZE_OUTPUT_VHDL tag to YES if your project consists of VHDL 
+# sources. Doxygen will then generate output that is tailored for 
+# VHDL.
+
+OPTIMIZE_OUTPUT_VHDL   = NO
+
+# Doxygen selects the parser to use depending on the extension of the files it parses. 
+# With this tag you can assign which parser to use for a given extension. 
+# Doxygen has a built-in mapping, but you can override or extend it using this tag. 
+# The format is ext=language, where ext is a file extension, and language is one of 
+# the parsers supported by doxygen: IDL, Java, Javascript, C#, C, C++, D, PHP, 
+# Objective-C, Python, Fortran, VHDL, C, C++. For instance to make doxygen treat 
+# .inc files as Fortran files (default is PHP), and .f files as C (default is Fortran), 
+# use: inc=Fortran f=C. Note that for custom extensions you also need to set FILE_PATTERNS otherwise the files are not read by doxygen.
+
+EXTENSION_MAPPING      = 
+
+# If you use STL classes (i.e. std::string, std::vector, etc.) but do not want 
+# to include (a tag file for) the STL sources as input, then you should 
+# set this tag to YES in order to let doxygen match functions declarations and 
+# definitions whose arguments contain STL classes (e.g. func(std::string); v.s. 
+# func(std::string) {}). This also make the inheritance and collaboration 
+# diagrams that involve STL classes more complete and accurate.
+
+BUILTIN_STL_SUPPORT    = NO
+
+# If you use Microsoft's C++/CLI language, you should set this option to YES to 
+# enable parsing support.
+
+CPP_CLI_SUPPORT        = NO
+
+# Set the SIP_SUPPORT tag to YES if your project consists of sip sources only. 
+# Doxygen will parse them like normal C++ but will assume all classes use public 
+# instead of private inheritance when no explicit protection keyword is present.
+
+SIP_SUPPORT            = NO
+
+# For Microsoft's IDL there are propget and propput attributes to indicate getter 
+# and setter methods for a property. Setting this option to YES (the default) 
+# will make doxygen to replace the get and set methods by a property in the 
+# documentation. This will only work if the methods are indeed getting or 
+# setting a simple type. If this is not the case, or you want to show the 
+# methods anyway, you should set this option to NO.
+
+IDL_PROPERTY_SUPPORT   = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
+# tag is set to YES, then doxygen will reuse the documentation of the first 
+# member in the group (if any) for the other members of the group. By default 
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of 
+# the same type (for instance a group of public functions) to be put as a 
+# subgroup of that type (e.g. under the Public Functions section). Set it to 
+# NO to prevent subgrouping. Alternatively, this can be done per class using 
+# the \nosubgrouping command.
+
+SUBGROUPING            = YES
+
+# When TYPEDEF_HIDES_STRUCT is enabled, a typedef of a struct, union, or enum 
+# is documented as struct, union, or enum with the name of the typedef. So 
+# typedef struct TypeS {} TypeT, will appear in the documentation as a struct 
+# with name TypeT. When disabled the typedef will appear as a member of a file, 
+# namespace, or class. And the struct will be named TypeS. This can typically 
+# be useful for C code in case the coding convention dictates that all compound 
+# types are typedef'ed and only the typedef is referenced, never the tag name.
+
+TYPEDEF_HIDES_STRUCT   = NO
+
+# The SYMBOL_CACHE_SIZE determines the size of the internal cache use to 
+# determine which symbols to keep in memory and which to flush to disk. 
+# When the cache is full, less often used symbols will be written to disk. 
+# For small to medium size projects (<1000 input files) the default value is 
+# probably good enough. For larger projects a too small cache size can cause 
+# doxygen to be busy swapping symbols to and from disk most of the time 
+# causing a significant performance penality. 
+# If the system has enough physical memory increasing the cache will improve the 
+# performance by keeping more symbols in memory. Note that the value works on 
+# a logarithmic scale so increasing the size by one will rougly double the 
+# memory usage. The cache size is given by this formula: 
+# 2^(16+SYMBOL_CACHE_SIZE). The valid range is 0..9, the default is 0, 
+# corresponding to a cache size of 2^16 = 65536 symbols
+
+SYMBOL_CACHE_SIZE      = 0
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in 
+# documentation are documented, even if no documentation was available. 
+# Private class members and static file members will be hidden unless 
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
+
+EXTRACT_ALL            = YES
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
+# will be included in the documentation.
+
+EXTRACT_PRIVATE        = YES
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file 
+# will be included in the documentation.
+
+EXTRACT_STATIC         = NO
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) 
+# defined locally in source files will be included in the documentation. 
+# If set to NO only classes defined in header files are included.
+
+EXTRACT_LOCAL_CLASSES  = YES
+
+# This flag is only useful for Objective-C code. When set to YES local 
+# methods, which are defined in the implementation section but not in 
+# the interface are included in the documentation. 
+# If set to NO (the default) only methods in the interface are included.
+
+EXTRACT_LOCAL_METHODS  = NO
+
+# If this flag is set to YES, the members of anonymous namespaces will be 
+# extracted and appear in the documentation as a namespace called 
+# 'anonymous_namespace{file}', where file will be replaced with the base 
+# name of the file that contains the anonymous namespace. By default 
+# anonymous namespace are hidden.
+
+EXTRACT_ANON_NSPACES   = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
+# undocumented members of documented classes, files or namespaces. 
+# If set to NO (the default) these members will be included in the 
+# various overviews, but no documentation section is generated. 
+# This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_MEMBERS     = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all 
+# undocumented classes that are normally visible in the class hierarchy. 
+# If set to NO (the default) these classes will be included in the various 
+# overviews. This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all 
+# friend (class|struct|union) declarations. 
+# If set to NO (the default) these declarations will be included in the 
+# documentation.
+
+HIDE_FRIEND_COMPOUNDS  = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any 
+# documentation blocks found inside the body of a function. 
+# If set to NO (the default) these blocks will be appended to the 
+# function's detailed documentation block.
+
+HIDE_IN_BODY_DOCS      = NO
+
+# The INTERNAL_DOCS tag determines if documentation 
+# that is typed after a \internal command is included. If the tag is set 
+# to NO (the default) then the documentation will be excluded. 
+# Set it to YES to include the internal documentation.
+
+INTERNAL_DOCS          = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate 
+# file names in lower-case letters. If set to YES upper-case letters are also 
+# allowed. This is useful if you have classes or files whose names only differ 
+# in case and if your file system supports case sensitive file names. Windows 
+# and Mac users are advised to set this option to NO.
+
+CASE_SENSE_NAMES       = YES
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen 
+# will show members with their full class and namespace scopes in the 
+# documentation. If set to YES the scope will be hidden.
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen 
+# will put a list of the files that are included by a file in the documentation 
+# of that file.
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] 
+# is inserted in the documentation for inline members.
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen 
+# will sort the (detailed) documentation of file and class members 
+# alphabetically by member name. If set to NO the members will appear in 
+# declaration order.
+
+SORT_MEMBER_DOCS       = NO
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the 
+# brief documentation of file, namespace and class members alphabetically 
+# by member name. If set to NO (the default) the members will appear in 
+# declaration order.
+
+SORT_BRIEF_DOCS        = NO
+
+# If the SORT_GROUP_NAMES tag is set to YES then doxygen will sort the 
+# hierarchy of group names into alphabetical order. If set to NO (the default) 
+# the group names will appear in their defined order.
+
+SORT_GROUP_NAMES       = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be 
+# sorted by fully-qualified names, including namespaces. If set to 
+# NO (the default), the class list will be sorted only by class name, 
+# not including the namespace part. 
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES. 
+# Note: This option applies only to the class list, not to the 
+# alphabetical list.
+
+SORT_BY_SCOPE_NAME     = YES
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or 
+# disable (NO) the todo list. This list is created by putting \todo 
+# commands in the documentation.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or 
+# disable (NO) the test list. This list is created by putting \test 
+# commands in the documentation.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or 
+# disable (NO) the bug list. This list is created by putting \bug 
+# commands in the documentation.
+
+GENERATE_BUGLIST       = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or 
+# disable (NO) the deprecated list. This list is created by putting 
+# \deprecated commands in the documentation.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional 
+# documentation sections, marked by \if sectionname ... \endif.
+
+ENABLED_SECTIONS       = 
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines 
+# the initial value of a variable or define consists of for it to appear in 
+# the documentation. If the initializer consists of more lines than specified 
+# here it will be hidden. Use a value of 0 to hide initializers completely. 
+# The appearance of the initializer of individual variables and defines in the 
+# documentation can be controlled using \showinitializer or \hideinitializer 
+# command in the documentation regardless of this setting.
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated 
+# at the bottom of the documentation of classes and structs. If set to YES the 
+# list will mention the files that were used to generate the documentation.
+
+SHOW_USED_FILES        = YES
+
+# If the sources in your project are distributed over multiple directories 
+# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy 
+# in the documentation. The default is NO.
+
+SHOW_DIRECTORIES       = NO
+
+# Set the SHOW_FILES tag to NO to disable the generation of the Files page. 
+# This will remove the Files entry from the Quick Index and from the 
+# Folder Tree View (if specified). The default is YES.
+
+SHOW_FILES             = YES
+
+# Set the SHOW_NAMESPACES tag to NO to disable the generation of the 
+# Namespaces page. 
+# This will remove the Namespaces entry from the Quick Index 
+# and from the Folder Tree View (if specified). The default is YES.
+
+SHOW_NAMESPACES        = YES
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that 
+# doxygen should invoke to get the current version for each file (typically from 
+# the version control system). Doxygen will invoke the program by executing (via 
+# popen()) the command <command> <input-file>, where <command> is the value of 
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file 
+# provided by doxygen. Whatever the program writes to standard output 
+# is used as the file version. See the manual for examples.
+
+FILE_VERSION_FILTER    = 
+
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed by 
+# doxygen. The layout file controls the global structure of the generated output files 
+# in an output format independent way. The create the layout file that represents 
+# doxygen's defaults, run doxygen with the -l option. You can optionally specify a 
+# file name after the option, if omitted DoxygenLayout.xml will be used as the name 
+# of the layout file.
+
+LAYOUT_FILE            = 
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated 
+# by doxygen. Possible values are YES and NO. If left blank NO is used.
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are 
+# generated by doxygen. Possible values are YES and NO. If left blank 
+# NO is used.
+
+WARNINGS               = NO
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings 
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will 
+# automatically be disabled.
+
+WARN_IF_UNDOCUMENTED   = NO
+
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for 
+# potential errors in the documentation, such as not documenting some 
+# parameters in a documented function, or documenting parameters that 
+# don't exist or using markup commands wrongly.
+
+WARN_IF_DOC_ERROR      = YES
+
+# This WARN_NO_PARAMDOC option can be abled to get warnings for 
+# functions that are documented, but have no documentation for their parameters 
+# or return value. If set to NO (the default) doxygen will only warn about 
+# wrong or incomplete parameter documentation, but not about the absence of 
+# documentation.
+
+WARN_NO_PARAMDOC       = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that 
+# doxygen can produce. The string should contain the $file, $line, and $text 
+# tags, which will be replaced by the file and line number from which the 
+# warning originated and the warning text. Optionally the format may contain 
+# $version, which will be replaced by the version of the file (if it could 
+# be obtained via FILE_VERSION_FILTER)
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning 
+# and error messages should be written. If left blank the output is written 
+# to stderr.
+
+WARN_LOGFILE           = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain 
+# documented source files. You may enter file names like "myfile.cpp" or 
+# directories like "/usr/src/myproject". Separate the files or directories 
+# with spaces.
+
+INPUT = lv2.h
+
+# This tag can be used to specify the character encoding of the source files 
+# that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is 
+# also the default input encoding. Doxygen uses libiconv (or the iconv built 
+# into libc) for the transcoding. See http://www.gnu.org/software/libiconv for 
+# the list of possible encodings.
+
+INPUT_ENCODING         = UTF-8
+
+# If the value of the INPUT tag contains directories, you can use the 
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank the following patterns are tested: 
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx 
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
+
+FILE_PATTERNS          = 
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories 
+# should be searched for input files as well. Possible values are YES and NO. 
+# If left blank NO is used.
+
+RECURSIVE              = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should 
+# excluded from the INPUT source files. This way you can easily exclude a 
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+
+EXCLUDE                = 
+
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or 
+# directories that are symbolic links (a Unix filesystem feature) are excluded 
+# from the input.
+
+EXCLUDE_SYMLINKS       = NO
+
+# If the value of the INPUT tag contains directories, you can use the 
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
+# certain files from those directories. Note that the wildcards are matched 
+# against the file with absolute path, so to exclude all test directories 
+# for example use the pattern */test/*
+
+EXCLUDE_PATTERNS       = 
+
+# The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names 
+# (namespaces, classes, functions, etc.) that should be excluded from the 
+# output. The symbol name can be a fully qualified name, a word, or if the 
+# wildcard * is used, a substring. Examples: ANamespace, AClass, 
+# AClass::ANamespace, ANamespace::*Test
+
+EXCLUDE_SYMBOLS        = 
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or 
+# directories that contain example code fragments that are included (see 
+# the \include command).
+
+EXAMPLE_PATH           = 
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the 
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank all files are included.
+
+EXAMPLE_PATTERNS       = 
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be 
+# searched for input files to be used with the \include or \dontinclude 
+# commands irrespective of the value of the RECURSIVE tag. 
+# Possible values are YES and NO. If left blank NO is used.
+
+EXAMPLE_RECURSIVE      = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or 
+# directories that contain image that are included in the documentation (see 
+# the \image command).
+
+IMAGE_PATH             = 
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should 
+# invoke to filter for each input file. Doxygen will invoke the filter program 
+# by executing (via popen()) the command <filter> <input-file>, where <filter> 
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
+# input file. Doxygen will then use the output that the filter program writes 
+# to standard output. 
+# If FILTER_PATTERNS is specified, this tag will be 
+# ignored.
+
+INPUT_FILTER           = 
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern 
+# basis. 
+# Doxygen will compare the file name with each pattern and apply the 
+# filter if there is a match. 
+# The filters are a list of the form: 
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further 
+# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER 
+# is applied to all files.
+
+FILTER_PATTERNS        = 
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
+# INPUT_FILTER) will be used to filter the input files when producing source 
+# files to browse (i.e. when SOURCE_BROWSER is set to YES).
+
+FILTER_SOURCE_FILES    = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will 
+# be generated. Documented entities will be cross-referenced with these sources. 
+# Note: To get rid of all source code in the generated output, make sure also 
+# VERBATIM_HEADERS is set to NO.
+
+SOURCE_BROWSER         = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body 
+# of functions and classes directly in the documentation.
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct 
+# doxygen to hide any special comment blocks from generated source code 
+# fragments. Normal C and C++ comments will always remain visible.
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES 
+# then for each documented function all documented 
+# functions referencing it will be listed.
+
+REFERENCED_BY_RELATION = YES
+
+# If the REFERENCES_RELATION tag is set to YES 
+# then for each documented function all documented entities 
+# called/used by that function will be listed.
+
+REFERENCES_RELATION    = YES
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default) 
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from 
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will 
+# link to the source code. 
+# Otherwise they will link to the documentation.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code 
+# will point to the HTML generated by the htags(1) tool instead of doxygen 
+# built-in source browser. The htags tool is part of GNU's global source 
+# tagging system (see http://www.gnu.org/software/global/global.html). You 
+# will need version 4.8.6 or higher.
+
+USE_HTAGS              = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
+# will generate a verbatim copy of the header file for each class for 
+# which an include is specified. Set to NO to disable this.
+
+VERBATIM_HEADERS       = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index 
+# of all compounds will be generated. Enable this if the project 
+# contains a lot of classes, structs, unions or interfaces.
+
+ALPHABETICAL_INDEX     = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then 
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns 
+# in which this list will be split (can be a number in the range [1..20])
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all 
+# classes will be put under the same header in the alphabetical index. 
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that 
+# should be ignored while generating the index headers.
+
+IGNORE_PREFIX          = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will 
+# generate HTML output.
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `html' will be used as the default path.
+
+HTML_OUTPUT            = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for 
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank 
+# doxygen will generate files with .html extension.
+
+HTML_FILE_EXTENSION    = .html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard header.
+
+HTML_HEADER            =
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard footer.
+
+HTML_FOOTER            = 
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading 
+# style sheet that is used by each HTML page. It can be used to 
+# fine-tune the look of the HTML output. If the tag is left blank doxygen 
+# will generate a default style sheet. Note that doxygen will try to copy 
+# the style sheet file to the HTML output directory, so don't put your own 
+# stylesheet in the HTML output directory as well, or it will be erased!
+
+HTML_STYLESHEET        = 
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, 
+# files or namespaces will be aligned in HTML using tables. If set to 
+# NO a bullet list will be used.
+
+HTML_ALIGN_MEMBERS     = YES
+
+# If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML 
+# documentation will contain sections that can be hidden and shown after the 
+# page has loaded. For this to work a browser that supports 
+# JavaScript and DHTML is required (for instance Mozilla 1.0+, Firefox 
+# Netscape 6.0+, Internet explorer 5.0+, Konqueror, or Safari).
+
+HTML_DYNAMIC_SECTIONS  = NO
+
+# If the GENERATE_DOCSET tag is set to YES, additional index files 
+# will be generated that can be used as input for Apple's Xcode 3 
+# integrated development environment, introduced with OSX 10.5 (Leopard). 
+# To create a documentation set, doxygen will generate a Makefile in the 
+# HTML output directory. Running make will produce the docset in that 
+# directory and running "make install" will install the docset in 
+# ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find 
+# it at startup. 
+# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html for more information.
+
+GENERATE_DOCSET        = NO
+
+# When GENERATE_DOCSET tag is set to YES, this tag determines the name of the 
+# feed. A documentation feed provides an umbrella under which multiple 
+# documentation sets from a single provider (such as a company or product suite) 
+# can be grouped.
+
+DOCSET_FEEDNAME        = "Doxygen generated docs"
+
+# When GENERATE_DOCSET tag is set to YES, this tag specifies a string that 
+# should uniquely identify the documentation set bundle. This should be a 
+# reverse domain-name style string, e.g. com.mycompany.MyDocSet. Doxygen 
+# will append .docset to the name.
+
+DOCSET_BUNDLE_ID       = org.doxygen.Project
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files 
+# will be generated that can be used as input for tools like the 
+# Microsoft HTML help workshop to generate a compiled HTML help file (.chm) 
+# of the generated HTML documentation.
+
+GENERATE_HTMLHELP      = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can 
+# be used to specify the file name of the resulting .chm file. You 
+# can add a path in front of the file if the result should not be 
+# written to the html output directory.
+
+CHM_FILE               = 
+
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can 
+# be used to specify the location (absolute path including file name) of 
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run 
+# the HTML help compiler on the generated index.hhp.
+
+HHC_LOCATION           = 
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag 
+# controls if a separate .chi index file is generated (YES) or that 
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI           = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_INDEX_ENCODING 
+# is used to encode HtmlHelp index (hhk), content (hhc) and project file 
+# content.
+
+CHM_INDEX_ENCODING     = 
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
+# controls whether a binary table of contents is generated (YES) or a 
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members 
+# to the contents of the HTML help documentation and to the tree view.
+
+TOC_EXPAND             = NO
+
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and QHP_VIRTUAL_FOLDER 
+# are set, an additional index file will be generated that can be used as input for 
+# Qt's qhelpgenerator to generate a Qt Compressed Help (.qch) of the generated 
+# HTML documentation.
+
+GENERATE_QHP           = NO
+
+# If the QHG_LOCATION tag is specified, the QCH_FILE tag can 
+# be used to specify the file name of the resulting .qch file. 
+# The path specified is relative to the HTML output folder.
+
+QCH_FILE               = 
+
+# The QHP_NAMESPACE tag specifies the namespace to use when generating 
+# Qt Help Project output. For more information please see 
+# http://doc.trolltech.com/qthelpproject.html#namespace
+
+QHP_NAMESPACE          = 
+
+# The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating 
+# Qt Help Project output. For more information please see 
+# http://doc.trolltech.com/qthelpproject.html#virtual-folders
+
+QHP_VIRTUAL_FOLDER     = doc
+
+# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to add. 
+# For more information please see 
+# http://doc.trolltech.com/qthelpproject.html#custom-filters
+
+QHP_CUST_FILTER_NAME   = 
+
+# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the custom filter to add.For more information please see 
+# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">Qt Help Project / Custom Filters</a>.
+
+QHP_CUST_FILTER_ATTRS  = 
+
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this project's 
+# filter section matches. 
+# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">Qt Help Project / Filter Attributes</a>.
+
+QHP_SECT_FILTER_ATTRS  = 
+
+# If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can 
+# be used to specify the location of Qt's qhelpgenerator. 
+# If non-empty doxygen will try to run qhelpgenerator on the generated 
+# .qhp file.
+
+QHG_LOCATION           = 
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at 
+# top of each HTML page. The value NO (the default) enables the index and 
+# the value YES disables it.
+
+DISABLE_INDEX          = NO
+
+# This tag can be used to set the number of enum values (range [1..20]) 
+# that doxygen will group on one line in the generated HTML documentation.
+
+ENUM_VALUES_PER_LINE   = 4
+
+# The GENERATE_TREEVIEW tag is used to specify whether a tree-like index 
+# structure should be generated to display hierarchical information. 
+# If the tag value is set to FRAME, a side panel will be generated 
+# containing a tree-like index structure (just like the one that 
+# is generated for HTML Help). For this to work a browser that supports 
+# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+, 
+# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are 
+# probably better off using the HTML help feature. Other possible values 
+# for this tag are: HIERARCHIES, which will generate the Groups, Directories, 
+# and Class Hierarchy pages using a tree view instead of an ordered list; 
+# ALL, which combines the behavior of FRAME and HIERARCHIES; and NONE, which 
+# disables this behavior completely. For backwards compatibility with previous 
+# releases of Doxygen, the values YES and NO are equivalent to FRAME and NONE 
+# respectively.
+
+GENERATE_TREEVIEW      = NO
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
+# used to set the initial width (in pixels) of the frame in which the tree 
+# is shown.
+
+TREEVIEW_WIDTH         = 250
+
+# Use this tag to change the font size of Latex formulas included 
+# as images in the HTML documentation. The default is 10. Note that 
+# when you change the font size after a successful doxygen run you need 
+# to manually remove any form_*.png images from the HTML output directory 
+# to force them to be regenerated.
+
+FORMULA_FONTSIZE       = 10
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will 
+# generate Latex output.
+
+GENERATE_LATEX         = NO
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `latex' will be used as the default path.
+
+LATEX_OUTPUT           = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be 
+# invoked. If left blank `latex' will be used as the default command name.
+
+LATEX_CMD_NAME         = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to 
+# generate index for LaTeX. If left blank `makeindex' will be used as the 
+# default command name.
+
+MAKEINDEX_CMD_NAME     = makeindex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact 
+# LaTeX documents. This may be useful for small projects and may help to 
+# save some trees in general.
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used 
+# by the printer. Possible values are: a4, a4wide, letter, legal and 
+# executive. If left blank a4wide will be used.
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX 
+# packages that should be included in the LaTeX output.
+
+EXTRA_PACKAGES         = 
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for 
+# the generated latex document. The header should contain everything until 
+# the first chapter. If it is left blank doxygen will generate a 
+# standard header. Notice: only use this tag if you know what you are doing!
+
+LATEX_HEADER           = 
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated 
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will 
+# contain links (just like the HTML output) instead of page references 
+# This makes the output suitable for online browsing using a pdf viewer.
+
+PDF_HYPERLINKS         = NO
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
+# plain latex in the generated Makefile. Set this option to YES to get a 
+# higher quality PDF documentation.
+
+USE_PDFLATEX           = NO
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. 
+# command to the generated LaTeX files. This will instruct LaTeX to keep 
+# running if errors occur, instead of asking the user for help. 
+# This option is also used when generating formulas in HTML.
+
+LATEX_BATCHMODE        = NO
+
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not 
+# include the index chapters (such as File Index, Compound Index, etc.) 
+# in the output.
+
+LATEX_HIDE_INDICES     = NO
+
+# If LATEX_SOURCE_CODE is set to YES then doxygen will include source code with syntax highlighting in the LaTeX output. Note that which sources are shown also depends on other settings such as SOURCE_BROWSER.
+
+LATEX_SOURCE_CODE      = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
+# The RTF output is optimized for Word 97 and may not look very pretty with 
+# other RTF readers or editors.
+
+GENERATE_RTF           = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `rtf' will be used as the default path.
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact 
+# RTF documents. This may be useful for small projects and may help to 
+# save some trees in general.
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated 
+# will contain hyperlink fields. The RTF file will 
+# contain links (just like the HTML output) instead of page references. 
+# This makes the output suitable for online browsing using WORD or other 
+# programs which support those fields. 
+# Note: wordpad (write) and others do not support links.
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's 
+# config file, i.e. a series of assignments. You only have to provide 
+# replacements, missing definitions are set to their default value.
+
+RTF_STYLESHEET_FILE    = 
+
+# Set optional variables used in the generation of an rtf document. 
+# Syntax is similar to doxygen's config file.
+
+RTF_EXTENSIONS_FILE    = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will 
+# generate man pages
+
+GENERATE_MAN           = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `man' will be used as the default path.
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to 
+# the generated man pages (default is the subroutine's section .3)
+
+MAN_EXTENSION          = .3
+
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output, 
+# then it will generate one additional man file for each entity 
+# documented in the real man page(s). These additional files 
+# only source the real man page, but without them the man command 
+# would be unable to find the correct page. The default is NO.
+
+MAN_LINKS              = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES Doxygen will 
+# generate an XML file that captures the structure of 
+# the code including all documentation.
+
+GENERATE_XML           = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `xml' will be used as the default path.
+
+XML_OUTPUT             = xml
+
+# The XML_SCHEMA tag can be used to specify an XML schema, 
+# which can be used by a validating XML parser to check the 
+# syntax of the XML files.
+
+XML_SCHEMA             = 
+
+# The XML_DTD tag can be used to specify an XML DTD, 
+# which can be used by a validating XML parser to check the 
+# syntax of the XML files.
+
+XML_DTD                = 
+
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will 
+# dump the program listings (including syntax highlighting 
+# and cross-referencing information) to the XML output. Note that 
+# enabling this will significantly increase the size of the XML output.
+
+XML_PROGRAMLISTING     = YES
+
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will 
+# generate an AutoGen Definitions (see autogen.sf.net) file 
+# that captures the structure of the code including all 
+# documentation. Note that this feature is still experimental 
+# and incomplete at the moment.
+
+GENERATE_AUTOGEN_DEF   = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will 
+# generate a Perl module file that captures the structure of 
+# the code including all documentation. Note that this 
+# feature is still experimental and incomplete at the 
+# moment.
+
+GENERATE_PERLMOD       = NO
+
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate 
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able 
+# to generate PDF and DVI output from the Perl module output.
+
+PERLMOD_LATEX          = NO
+
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be 
+# nicely formatted so it can be parsed by a human reader. 
+# This is useful 
+# if you want to understand what is going on. 
+# On the other hand, if this 
+# tag is set to NO the size of the Perl module output will be much smaller 
+# and Perl will parse it just the same.
+
+PERLMOD_PRETTY         = YES
+
+# The names of the make variables in the generated doxyrules.make file 
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX. 
+# This is useful so different doxyrules.make files included by the same 
+# Makefile don't overwrite each other's variables.
+
+PERLMOD_MAKEVAR_PREFIX = 
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will 
+# evaluate all C-preprocessor directives found in the sources and include 
+# files.
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro 
+# names in the source code. If set to NO (the default) only conditional 
+# compilation will be performed. Macro expansion can be done in a controlled 
+# way by setting EXPAND_ONLY_PREDEF to YES.
+
+MACRO_EXPANSION        = NO
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
+# then the macro expansion is limited to the macros specified with the 
+# PREDEFINED and EXPAND_AS_DEFINED tags.
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
+# in the INCLUDE_PATH (see below) will be search if a #include is found.
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that 
+# contain include files that are not input files but should be processed by 
+# the preprocessor.
+
+INCLUDE_PATH           = 
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard 
+# patterns (like *.h and *.hpp) to filter out the header-files in the 
+# directories. If left blank, the patterns specified with FILE_PATTERNS will 
+# be used.
+
+INCLUDE_FILE_PATTERNS  = 
+
+# The PREDEFINED tag can be used to specify one or more macro names that 
+# are defined before the preprocessor is started (similar to the -D option of 
+# gcc). The argument of the tag is a list of macros of the form: name 
+# or name=definition (no spaces). If the definition and the = are 
+# omitted =1 is assumed. To prevent a macro definition from being 
+# undefined via #undef or recursively expanded use the := operator 
+# instead of the = operator.
+
+PREDEFINED             = 
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then 
+# this tag can be used to specify a list of macro names that should be expanded. 
+# The macro definition that is found in the sources will be used. 
+# Use the PREDEFINED tag if you want to use a different macro definition.
+
+EXPAND_AS_DEFINED      = 
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then 
+# doxygen's preprocessor will remove all function-like macros that are alone 
+# on a line, have an all uppercase name, and do not end with a semicolon. Such 
+# function macros are typically used for boiler-plate code, and will confuse 
+# the parser if not removed.
+
+SKIP_FUNCTION_MACROS   = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references   
+#---------------------------------------------------------------------------
+
+# The TAGFILES option can be used to specify one or more tagfiles. 
+# Optionally an initial location of the external documentation 
+# can be added for each tagfile. The format of a tag file without 
+# this location is as follows: 
+#  
+# TAGFILES = file1 file2 ... 
+# Adding location for the tag files is done as follows: 
+#  
+# TAGFILES = file1=loc1 "file2 = loc2" ... 
+# where "loc1" and "loc2" can be relative or absolute paths or 
+# URLs. If a location is present for each tag, the installdox tool 
+# does not have to be run to correct the links. 
+# Note that each tag file must have a unique name 
+# (where the name does NOT include the path) 
+# If a tag file is not located in the directory in which doxygen 
+# is run, you must also specify the path to the tagfile here.
+
+TAGFILES               = 
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create 
+# a tag file that is based on the input files it reads.
+
+GENERATE_TAGFILE       = 
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed 
+# in the class index. If set to NO only the inherited external classes 
+# will be listed.
+
+ALLEXTERNALS           = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed 
+# in the modules index. If set to NO, only the current project's groups will 
+# be listed.
+
+EXTERNAL_GROUPS        = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script 
+# interpreter (i.e. the result of `which perl').
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base 
+# or super classes. Setting the tag to NO turns the diagrams off. Note that 
+# this option is superseded by the HAVE_DOT option below. This is only a 
+# fallback. It is recommended to install and use dot, since it yields more 
+# powerful graphs.
+
+CLASS_DIAGRAMS         = YES
+
+# You can define message sequence charts within doxygen comments using the \msc 
+# command. Doxygen will then run the mscgen tool (see 
+# http://www.mcternan.me.uk/mscgen/) to produce the chart and insert it in the 
+# documentation. The MSCGEN_PATH tag allows you to specify the directory where 
+# the mscgen tool resides. If left empty the tool is assumed to be found in the 
+# default search path.
+
+MSCGEN_PATH            = 
+
+# If set to YES, the inheritance and collaboration graphs will hide 
+# inheritance and usage relations if the target is undocumented 
+# or is not a class.
+
+HIDE_UNDOC_RELATIONS   = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is 
+# available from the path. This tool is part of Graphviz, a graph visualization 
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section 
+# have no effect if this option is set to NO (the default)
+
+HAVE_DOT               = YES
+
+# By default doxygen will write a font called FreeSans.ttf to the output 
+# directory and reference it in all dot files that doxygen generates. This 
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+# these (or just want a differently looking font) you can specify the font name 
+# using DOT_FONTNAME. You need need to make sure dot is able to find the font, 
+# which can be done by putting it in a standard location or by setting the 
+# DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory 
+# containing the font.
+
+DOT_FONTNAME           = FreeSans
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+# The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs. 
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+# By default doxygen will tell dot to use the output directory to look for the 
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+
+DOT_FONTPATH           = 
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
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+# indirect inheritance relations. Setting this tag to YES will force the 
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for each documented class showing the direct and 
+# indirect implementation dependencies (inheritance, containment, and 
+# class references variables) of the class with other documented classes.
+
+COLLABORATION_GRAPH    = YES
+
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for groups, showing the direct groups dependencies
+
+GROUP_GRAPHS           = YES
+
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and 
+# collaboration diagrams in a style similar to the OMG's Unified Modeling 
+# Language.
+
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+
+# If set to YES, the inheritance and collaboration graphs will show the 
+# relations between templates and their instances.
+
+TEMPLATE_RELATIONS     = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT 
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+# file showing the direct and indirect include dependencies of the file with 
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+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and 
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+# documented header file showing the documented files that directly or 
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+# If the CALL_GRAPH and HAVE_DOT options are set to YES then 
+# doxygen will generate a call dependency graph for every global function 
+# or class method. Note that enabling this option will significantly increase 
+# the time of a run. So in most cases it will be better to enable call graphs 
+# for selected functions only using the \callgraph command.
+
+CALL_GRAPH             = NO
+
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then 
+# doxygen will generate a caller dependency graph for every global function 
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+CALLER_GRAPH           = NO
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
+# will graphical hierarchy of all classes instead of a textual one.
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+GRAPHICAL_HIERARCHY    = YES
+
+# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES 
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+# in a graphical way. The dependency relations are determined by the #include 
+# relations between the files in the directories.
+
+DIRECTORY_GRAPH        = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images 
+# generated by dot. Possible values are png, jpg, or gif 
+# If left blank png will be used.
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+DOT_IMAGE_FORMAT       = png
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be 
+# found. If left blank, it is assumed the dot tool can be found in the path.
+
+DOT_PATH               = 
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that 
+# contain dot files that are included in the documentation (see the 
+# \dotfile command).
+
+DOTFILE_DIRS           = 
+
+# The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of 
+# nodes that will be shown in the graph. If the number of nodes in a graph 
+# becomes larger than this value, doxygen will truncate the graph, which is 
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+# number of direct children of the root node in a graph is already larger than 
+# DOT_GRAPH_MAX_NODES then the graph will not be shown at all. Also note 
+# that the size of a graph can be further restricted by MAX_DOT_GRAPH_DEPTH.
+
+DOT_GRAPH_MAX_NODES    = 50
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the 
+# graphs generated by dot. A depth value of 3 means that only nodes reachable 
+# from the root by following a path via at most 3 edges will be shown. Nodes 
+# that lay further from the root node will be omitted. Note that setting this 
+# option to 1 or 2 may greatly reduce the computation time needed for large 
+# code bases. Also note that the size of a graph can be further restricted by 
+# DOT_GRAPH_MAX_NODES. Using a depth of 0 means no depth restriction.
+
+MAX_DOT_GRAPH_DEPTH    = 0
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+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent 
+# background. This is disabled by default, because dot on Windows does not 
+# seem to support this out of the box. Warning: Depending on the platform used, 
+# enabling this option may lead to badly anti-aliased labels on the edges of 
+# a graph (i.e. they become hard to read).
+
+DOT_TRANSPARENT        = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output 
+# files in one run (i.e. multiple -o and -T options on the command line). This 
+# makes dot run faster, but since only newer versions of dot (>1.8.10) 
+# support this, this feature is disabled by default.
+
+DOT_MULTI_TARGETS      = YES
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
+# generate a legend page explaining the meaning of the various boxes and 
+# arrows in the dot generated graphs.
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will 
+# remove the intermediate dot files that are used to generate 
+# the various graphs.
+
+DOT_CLEANUP            = YES
+
+#---------------------------------------------------------------------------
+# Options related to the search engine
+#---------------------------------------------------------------------------
+
+# The SEARCHENGINE tag specifies whether or not a search engine should be 
+# used. If set to NO the values of all tags below this one will be ignored.
+
+SEARCHENGINE           = NO
+
diff --git a/ns/lv2core/INSTALL b/ns/lv2core/INSTALL
new file mode 100644
index 0000000..c9c49dc
--- /dev/null
+++ b/ns/lv2core/INSTALL
@@ -0,0 +1,40 @@
+This software requires only Python to build. The build system, based on waf,
+is included in this source distribution.
+
+= LV2Core =
+
+This package contains everything necessary to compile against and/or use LV2
+plugins and extensions: a header file, pkg-config file, and LV2 bundle (with
+Turtle files).
+
+The configure option --bundle-only can be used to install only the bundle. This
+is useful for installing the bundle to a project-specific or user-specific
+location (e.g. ~/.lv2).
+
+See README for details on how to correctly package LV2, and how to depend on
+LV2 in other projects.
+
+= Generic Waf Instructions =
+
+As with most build systems, building and installing a project with waf is done
+in three separate stages:
+
+Configure: ./waf configure [OPTIONS]
+     e.g.: ./waf configure --prefix=/some/where
+
+  The default prefix is /usr/local
+
+
+Build: ./waf [OPTIONS]
+ e.g.: ./waf
+
+
+Install: ./waf install [OPTIONS]
+   e.g.: ./waf install
+   e.g.:  DESTDIR=/home/drobilla/packages ./waf install
+
+  The environment variable DESTDIR can be used to add any prefix to
+  the install paths (useful for packaging).
+
+  
+Run './waf --help' for detailed option information.
diff --git a/ns/lv2core/README b/ns/lv2core/README
new file mode 100644
index 0000000..845bf40
--- /dev/null
+++ b/ns/lv2core/README
@@ -0,0 +1,34 @@
+LV2
+---
+
+LV2 gives programmers the ability to write audio processors (or "plugins") in
+C/C++ which can be dynamically loaded into a range of applications (or
+"hosts").
+
+This core specification is deliberately as short and simple as possible, but is
+designed so that extensions can be defined to add more advanced features.
+
+More information about LV2 can be found at <http://lv2plug.in>.
+
+Applications that use LV2 plugins should depend on this package.  It includes a
+header, LV2 bundle, and a pkg-config file.  To compile against LV2, build
+scripts should check for the pkg-config package "lv2core", or simply check for
+the header "lv2/lv2plug.in/ns/lv2core/lv2.h".
+
+The appropriate C include for LV2 specifications is based on their URI, e.g.:
+
+#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
+
+Is how code should include the header "lv2.h" in this bundle, which defines the
+specification with URI "http://lv2plug.in/ns/lv2core".  Other specifications
+should follow this convention, e.g. the correct way to include the header
+"foo.h" in the extension "http://example.org/foo" is:
+
+#include "lv2/example.org/foo/foo.h"
+
+Please package these components in a single package (e.g. do not split the
+headers, data, and program into separate packages).  This package, in its
+entirety, is a build and run time dependency of any code that uses LV2.
+Distributions are encouraged to include it with package name "lv2core".
+
+ -- David Robillard <d@drobilla.net>
diff --git a/ns/lv2core/lv2.h b/ns/lv2core/lv2.h
new file mode 100644
index 0000000..ce55d45
--- /dev/null
+++ b/ns/lv2core/lv2.h
@@ -0,0 +1,298 @@
+/*
+  LV2 - An audio plugin interface specification.
+  Copyright 2006-2011 Steve Harris, David Robillard.
+
+  Based on LADSPA, Copyright 2000-2002 Richard W.E. Furse,
+  Paul Barton-Davis, Stefan Westerfeld.
+ 
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+  @file lv2.h
+  API for the LV2 specification <http://lv2plug.in/ns/lv2core>.
+  Revision: 4.1
+*/
+
+#ifndef LV2_H_INCLUDED
+#define LV2_H_INCLUDED
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   Plugin Instance Handle.
+ 
+   This is a handle for one particular instance of a plugin.  It is valid to
+   compare to NULL (or 0 for C++) but otherwise the host MUST NOT attempt to
+   interpret it.
+*/
+typedef void * LV2_Handle;
+
+/**
+   Feature.
+ 
+   Features allow hosts to make additional functionality available to plugins
+   without requiring modification to the LV2 API.  Extensions may define new
+   features and specify the @ref URI and @ref data to be used if necessary.
+   Some features, such as lv2:isLive, do not require the host to pass data.
+*/
+typedef struct _LV2_Feature {
+	/**
+	   A globally unique, case-sensitive identifier (URI) for this feature.
+
+	   This MUST be a valid URI string as defined by RFC 3986.
+	*/
+	const char * URI;
+
+	/**
+	   Pointer to arbitrary data.
+
+	   The format of this data is defined by the extension which describes the
+	   feature with the given @ref URI.
+	*/
+	void * data;
+} LV2_Feature;
+
+/**
+   Plugin Descriptor.
+ 
+   This structure provides the core functions necessary to instantiate and use
+   a plugin.
+*/
+typedef struct _LV2_Descriptor {
+	/**
+	   A globally unique, case-sensitive identifier for this plugin.
+
+	   This MUST be a valid URI string as defined by RFC 3986.  All plugins with
+	   the same URI MUST be compatible to some degree, see
+	   http://lv2plug.in/ns/lv2core for details.
+	*/
+	const char * URI;
+
+	/**
+	   Instantiate the plugin.
+
+	   Note that instance initialisation should generally occur in activate()
+	   rather than here. If a host calls instantiate(), it MUST call cleanup()
+	   at some point in the future.
+
+	   @param descriptor Descriptor of the plugin to instantiate.
+
+	   @param sample_rate Sample rate, in Hz, for the new plugin instance.
+
+	   @param bundle_path Path to the LV2 bundle which contains this plugin
+	   binary. It MUST include the trailing directory separator (e.g. '/') so
+	   that simply appending a filename will yield the path to that file in the
+	   bundle.
+	 
+	   @param features A NULL terminated array of LV2_Feature structs which
+	   represent the features the host supports. Plugins may refuse to
+	   instantiate if required features are not found here. However, hosts MUST
+	   NOT use this as a discovery mechanism: instead, use the RDF data to
+	   determine which features are required and do not attempt to instantiate
+	   unsupported plugins at all. This parameter MUST NOT be NULL, i.e. a host
+	   that supports no features MUST pass a single element array containing
+	   NULL.
+
+	   @return A handle for the new plugin instance, or NULL if instantiation
+	   has failed.	 
+	*/
+	LV2_Handle (*instantiate)(const struct _LV2_Descriptor * descriptor,
+	                          double                         sample_rate,
+	                          const char *                   bundle_path,
+	                          const LV2_Feature *const *     features);
+
+	/**
+	   Connect a port on a plugin instance to a memory location.
+
+	   Plugin writers should be aware that the host may elect to use the same
+	   buffer for more than one port and even use the same buffer for both
+	   input and output (see lv2:inPlaceBroken in lv2.ttl).
+	 
+	   If the plugin has the feature lv2:hardRTCapable then there are various
+	   things that the plugin MUST NOT do within the connect_port() function;
+	   see lv2.ttl for details.
+
+	   connect_port() MUST be called at least once for each port before run()
+	   is called, unless that port is lv2:connectionOptional. The plugin must
+	   pay careful attention to the block size passed to run() since the block
+	   allocated may only just be large enough to contain the data, and is not
+	   guaranteed to remain constant between run() calls.
+
+	   connect_port() may be called more than once for a plugin instance to
+	   allow the host to change the buffers that the plugin is reading or
+	   writing. These calls may be made before or after activate() or
+	   deactivate() calls.
+
+	   @param instance Plugin instance containing the port.
+
+	   @param port Index of the port to connect. The host MUST NOT try to
+	   connect a port index that is not defined in the plugin's RDF data. If
+	   it does, the plugin's behaviour is undefined (a crash is likely).
+
+	   @param data_location Pointer to data of the type defined by the port
+	   type in the plugin's RDF data (e.g. an array of float for an
+	   lv2:AudioPort). This pointer must be stored by the plugin instance and
+	   used to read/write data when run() is called. Data present at the time
+	   of the connect_port() call MUST NOT be considered meaningful.
+	*/
+	void (*connect_port)(LV2_Handle instance,
+	                     uint32_t   port,
+	                     void *     data_location);
+
+	/**
+	   Initialise a plugin instance and activate it for use.
+	 
+	   This is separated from instantiate() to aid real-time support and so
+	   that hosts can reinitialise a plugin instance by calling deactivate()
+	   and then activate(). In this case the plugin instance MUST reset all
+	   state information dependent on the history of the plugin instance except
+	   for any data locations provided by connect_port(). If there is nothing
+	   for activate() to do then this field may be NULL.
+	 
+	   When present, hosts MUST call this function once before run() is called
+	   for the first time. This call SHOULD be made as close to the run() call
+	   as possible and indicates to real-time plugins that they are now live,
+	   however plugins MUST NOT rely on a prompt call to run() after
+	   activate().
+
+	   The host MUST NOT call activate() again until deactivate() has been
+	   called first. If a host calls activate(), it MUST call deactivate() at
+	   some point in the future. Note that connect_port() may be called before
+	   or after activate().
+	*/
+	void (*activate)(LV2_Handle instance);
+
+	/**
+	   Run a plugin instance for a block.
+
+	   Note that if an activate() function exists then it must be called before
+	   run(). If deactivate() is called for a plugin instance then run() may
+	   not be called until activate() has been called again.
+	 
+	   If the plugin has the feature lv2:hardRTCapable then there are various
+	   things that the plugin MUST NOT do within the run() function (see
+	   lv2.ttl for details).
+
+	   As a special case, when @c sample_count == 0, the plugin should update
+	   any output ports that represent a single instant in time (e.g. control
+	   ports, but not audio ports). This is particularly useful for latent
+	   plugins, which should update their latency output port so hosts can
+	   pre-roll plugins to compute latency. Plugins MUST NOT crash when
+	   @c sample_count == 0.
+
+	   @param instance Instance to be run.
+
+	   @param sample_count The block size (in samples) for which the plugin
+	   instance must run.
+	*/
+	void (*run)(LV2_Handle instance,
+	            uint32_t   sample_count);
+
+	/**
+	   Deactivate a plugin instance (counterpart to activate()).
+
+	   Hosts MUST deactivate all activated instances after they have been run()
+	   for the last time. This call SHOULD be made as close to the last run()
+	   call as possible and indicates to real-time plugins that they are no
+	   longer live, however plugins MUST NOT rely on prompt deactivation. If
+	   there is nothing for deactivate() to do then this field may be NULL
+
+	   Deactivation is not similar to pausing since the plugin instance will be
+	   reinitialised by activate(). However, deactivate() itself MUST NOT fully
+	   reset plugin state. For example, the host may deactivate a plugin, then
+	   store its state (using some extension to do so).
+
+	   Hosts MUST NOT call deactivate() unless activate() was previously
+	   called. Note that connect_port() may be called before or after
+	   deactivate().
+	*/
+	void (*deactivate)(LV2_Handle instance);
+
+	/**
+	   Clean up a plugin instance (counterpart to instantiate()).
+	   
+	   Once an instance of a plugin has been finished with it must be deleted
+	   using this function. The instance handle passed ceases to be valid after
+	   this call.
+	 
+	   If activate() was called for a plugin instance then a corresponding call
+	   to deactivate() MUST be made before cleanup() is called. Hosts MUST NOT
+	   call cleanup() unless instantiate() was previously called.
+	*/
+	void (*cleanup)(LV2_Handle instance);
+
+	/**
+	   Return additional plugin data defined by some extenion.
+
+	   A typical use of this facility is to return a struct containing function
+	   pointers to extend the LV2_Descriptor API.
+	 
+	   The actual type and meaning of the returned object MUST be specified
+	   precisely by the extension. This function MUST return NULL for any
+	   unsupported URI. If a plugin does not support any extension data, this
+	   field may be NULL.
+	 
+	   The host is never responsible for freeing the returned value.
+	*/
+	const void * (*extension_data)(const char * uri);
+} LV2_Descriptor;
+
+/**
+   Prototype for plugin accessor function.
+ 
+   Plugins are discovered by hosts using RDF data (not by loading libraries).
+   See http://lv2plug.in for details on the discovery process, though most
+   hosts should use an existing library to implement this functionality.
+
+   A plugin library MUST include a function called "lv2_descriptor" with this
+   prototype.  This function MUST have C-style linkage (if you are using C++
+   this is taken care of by the 'extern "C"' clause at the top of this file).
+
+   When it is time to load a plugin (designated by its URI), the host loads the
+   plugin's library, gets the lv2_descriptor() function from it, and uses this
+   function to find the LV2_Descriptor for the desired plugin.  Plugins are
+   accessed by index using values from 0 upwards.  This function MUST return
+   NULL for out of range indices, so the host can enumerate plugins by
+   increasing @c index until NULL is returned.
+
+   Note that @c index has no meaning, hosts MUST NOT depend on it remaining
+   consistent between loads of the plugin library.
+*/
+const LV2_Descriptor * lv2_descriptor(uint32_t index);
+
+/**
+   Type of the lv2_descriptor() function in a plugin library.
+*/
+typedef const LV2_Descriptor *
+(*LV2_Descriptor_Function)(uint32_t index);
+
+/**
+  Put this (LV2_SYMBOL_EXPORT) before any functions that are to be loaded
+  by the host as a symbol from the dynamic library.
+*/
+#ifdef WIN32
+#define LV2_SYMBOL_EXPORT __declspec(dllexport)
+#else
+#define LV2_SYMBOL_EXPORT
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LV2_H_INCLUDED */
diff --git a/ns/lv2core/lv2core.doap.ttl b/ns/lv2core/lv2core.doap.ttl
new file mode 100644
index 0000000..f01eadb
--- /dev/null
+++ b/ns/lv2core/lv2core.doap.ttl
@@ -0,0 +1,100 @@
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://plugin.org.uk/swh.xrdf#me>
+	a foaf:Person ;
+	foaf:name "Steve Harris" ;
+	foaf:homepage <http://plugin.org.uk/> ;
+	rdfs:seeAlso <http://plugin.org.uk/swh.xrdf> .
+
+<http://drobilla.net/drobilla#me>
+	a foaf:Person ;
+	foaf:name "David Robillard" ;
+	foaf:homepage <http://drobilla.net/> ;
+	foaf:mbox <mailto:d@drobilla.net> ;
+	rdfs:seeAlso <http://drobilla.net/drobilla> .
+
+<http://lv2plug.in/ns/lv2core>
+	a doap:Project ;
+	doap:license <http://opensource.org/licenses/isc> ;
+	doap:name "LV2" ;
+	doap:homepage <http://lv2plug.in> ;
+	doap:created "2004-04-21" ;
+	doap:shortdesc "An audio plugin interface specification" ;
+	doap:programming-language "C" ;
+	doap:release [
+		doap:revision "4.1" ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Add lv2:extensionData and lv2:ExtensionData for plugins to indicate that they support some URI for extension_data()."
+			] , [
+				rdfs:label "Remove lv2config in favour of the convention that extension bundles simply install headers to standard URI-like include paths."
+			] , [
+				rdfs:label "Switch to simple BSD-style (ISC) license (with permission of all contributors to lv2.h and its ancestor, ladspa.h)."
+			]
+		]
+	] , [
+		doap:revision "4.0" ;
+		doap:created "2011-03-18" ;
+		doap:file-release <http://lv2plug.in/spec/lv2core-4.0.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Make doap:license suggested, but not required (for wrappers)."
+			] , [
+				rdfs:label "Define lv2:binary (MUST be in manifest.ttl)."
+			] , [
+				rdfs:label "Define lv2:majorVersion and lv2:minorVersion (MUST be in manifest.ttl)."
+			] , [
+				rdfs:label "Define lv2:documentation and use it to document lv2core."
+			] , [
+				rdfs:label "Add lv2:FunctionPlugin and lv2:ConstantPlugin classes."
+			] , [
+				rdfs:label "Move lv2:AmplifierPlugin under lv2:DynamicsPlugin."
+			] , [
+				rdfs:label "Loosen domain of lv2:optionalFeature and lv2:requiredFeature (to allow re-use in extensions)."
+			] , [
+				rdfs:label "Add generic lv2:Resource and lv2:PluginBase classes."
+			] , [
+				rdfs:label "Fix definition of lv2:minimum etc. (used for values, not scale points)."
+			] , [
+				rdfs:label "More precisely define properties with OWL."
+			] , [
+				rdfs:label "Move project metadata to manifest."
+			] , [
+				rdfs:label "Add lv2:enumeration port property."
+			] , [
+				rdfs:label "Define run() pre-roll special case (sample_count == 0)."
+			]
+		]
+	] , [
+		doap:revision "3.0" ;
+		doap:created "2008-11-08" ;
+		doap:file-release <http://lv2plug.in/spec/lv2core-3.0.tar.bz2> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Require that serialisations refer to ports by symbol rather than index."
+			] , [
+				rdfs:label "Minor stylistic changes to lv2.ttl."
+			] , [
+				rdfs:label "No header changes."
+			]
+		]
+	] , [
+		doap:revision "2.0" ;
+		doap:created "2008-02-10" ;
+		doap:file-release <http://lv2plug.in/spec/lv2core-2.0.tar.gz> ;
+		dcs:blame <http://drobilla.net/drobilla#me> ;
+		dcs:changeset [
+			dcs:item [
+				rdfs:label "Initial packaging."
+			]
+		]
+	] ;
+	doap:developer <http://plugin.org.uk/swh.xrdf#me> ,
+		<http://drobilla.net/drobilla#me> ;
+	doap:maintainer <http://drobilla.net/drobilla#me> .
diff --git a/ns/lv2core/lv2core.pc.in b/ns/lv2core/lv2core.pc.in
new file mode 100644
index 0000000..bcaa501
--- /dev/null
+++ b/ns/lv2core/lv2core.pc.in
@@ -0,0 +1,10 @@
+prefix=@PREFIX@
+exec_prefix=@EXEC_PREFIX@
+libdir=@LIBDIR@
+includedir=@INCLUDEDIR@
+
+Name: lv2core
+Version: @LV2CORE_VERSION@
+Description: Core LV2 plugin header and specification
+Libs:
+Cflags: -I${includedir}
diff --git a/ns/lv2core/lv2core.ttl b/ns/lv2core/lv2core.ttl
new file mode 100644
index 0000000..0ab56c5
--- /dev/null
+++ b/ns/lv2core/lv2core.ttl
@@ -0,0 +1,883 @@
+# This document describes LV2, a plugin interface.
+# See <http://lv2plug.in> for more information.
+# 
+# Copyright 2006-2011 Steve Harris, David Robillard
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
+
+###########################
+## General LV2 Resources ##
+###########################
+
+lv2:Resource a rdfs:Class , owl:Class ;
+    rdfs:comment """
+An LV2 Resource (e.g. plugin, specification, or any other LV2 related thing).
+""" .
+
+lv2:Specification a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Resource ;
+    lv2:documentation """
+<p>An LV2 specification (i.e. this specification, or an LV2 extension).</p>
+
+<p>Specification data, like plugin data, is distributed in bundles
+so hosts may discover <em>all</em> present LV2 data.</p>
+""" .
+
+lv2:documentation a rdf:Property , owl:AnnotationProperty ;
+    rdfs:range rdfs:Literal ;
+    rdfs:label "documentation" ;
+    rdfs:seeAlso <http://www.w3.org/TR/xhtml-basic/> ;
+    lv2:documentation """
+<p>Relates a Resource to documentation markup. The value of this property
+MUST be a string literal which is a valid XHTML Basic 1.1 fragment suitable
+for use as the content of the &lt;body&gt; element. This can be used by
+hosts to provide rich online documentation or by tools to generate external
+documentation pages. The standard language tagging facility of RDF can be
+used to provide multi-lingual documentation.</p>
+<p>XHTML Basic is a W3C Recommendation which defines a basic subset of XHTML
+intended to be reasonable to implement with limited resources (e.g. on embedded
+devices). See <a href="http://www.w3.org/TR/xhtml-basic/#s_xhtmlmodules"
+>XHTML Basic, Section 3</a> for a list of legal tags.</p>
+""" .
+
+<http://lv2plug.in/ns/lv2core>
+	a owl:Ontology ;
+	owl:imports <http://lv2plug.in/ns/doap.owl> ;
+	lv2:documentation """
+<p>LV2 is an interface for writing audio processors, or <q>plugins</q>, in
+C/C++ which can be dynamically loaded into many applications, or <q>hosts</q>.
+This <q>core</q> specification is simple and minimal, but is designed so that
+<q>extensions</q> can be defined to add more advanced features, making it
+possibly to implement nearly any feature imaginable.</p>
+
+<p>LV2 maintains a strong distinction between <q>code</q> and <q>data</q>.
+Plugin code is in a shared library, while data is in a companion data file
+written in <a href="http://www.w3.org/TeamSubmission/turtle/">Turtle</a>.
+Code, data, and any other resources (e.g. waveforms) are shipped together in a
+<q>bundle</q> directory.  The code contains only the executable portions of the
+plugin which inherently <em>must</em> be written in code.  All other data is
+provided in the data file(s).  This makes plugin data flexible and extensible,
+and allows the host to do everything but run the plugin without loading or
+executing any code.  Among other advantages, this makes hosts more robust
+(broken plugins can't crash a host during discovery) and allows generic tools
+and non-C programs to work with LV2 data.  LV2 itself and extensions are
+distributed in a similar way.</p>
+
+<p>An LV2 plugin library is suitable for dynamic loading (e.g. via
+<code>dlopen()</code>) and provides one or more plugin descriptors via the
+<code>lv2_descriptor()</code> function.  These can be instantiated to create
+plugin <q>instances</q>, which can be run directly on data or connected
+together to perform advanced signal processing tasks.</p>
+
+<p>Plugins communicate via <q>ports</q>, which can transmit any type of data.
+Data is processed by first <q>connecting</q> each port to a buffer, then
+repeatedly calling a plugin's <code>run()</code> method to process blocks of
+data.</p>
+
+<p>This core specification defines two types of port, equivalent to those in <a
+href="http://www.ladspa.org/">LADSPA</a>: lv2:ControlPort and lv2:AudioPort.
+Audio ports contain arrays with one <code>float</code> element per sample,
+allowing a block of audio to be processed in a single call to
+<code>run()</code>.  Control ports contain single <code>float</code> values,
+which are fixed and valid for the duration of the call to <code>run()</code>.
+Thus the <q>control rate</q> is determined by the block size, which is
+controlled by the host (and not necessarily constant).</p>
+
+<h3>Threading Rules</h3>
+
+<p>To faciliate use in multi-threaded programs, LV2 functions are partitioned
+into several threading classes:</p>
+
+<table>
+<tr><th>Discovery Class</th>
+    <th>Instantiation Class</th>
+    <th>Audio Class</th></tr>
+<tr><td>lv2_descriptor()</td>
+    <td>LV2_Descriptor::instantiate()</td>
+    <td>LV2_Descriptor::run()</td></tr>
+<tr><td>LV2_Descriptor::extension_data()</td>
+    <td>LV2_Descriptor::cleanup()</td>
+    <td>LV2_Descriptor::connect_port()</td></tr>
+<tr><td></td><td>LV2_Descriptor::activate()</td><td></td></tr>
+<tr><td></td><td>LV2_Descriptor::deactivate()</td><td></td></tr>
+</table>
+
+<p>The rules that hosts MUST follow are:</p>
+<ul>
+<li>When any function is running for a plugin instance,
+no other function in the same class may run for that instance.</li>
+<li>When a <em>Discovery</em> function is running,
+no other functions in the same shared object file may run.</li>
+<li>When an <em>Instantiation</em> function is running for a plugin instance,
+no other functions for that instance may run.</li>
+</ul>
+
+<p>Any simultaneous calls that are not explicitly forbidden by these rules are
+allowed. For example, a host may call <code>run()</code> for two different
+plugin instances simultaneously.</p>
+
+<p>Plugin functions in any class MUST NOT manipulate any state which might
+affect other plugin or host code, e.g. by using non-reentrant global
+functions.</p>
+
+<p>Extensions to this specification which add new functions MUST declare in
+which of these classes the functions belong, define new classes for them, or
+otherwise precisely describe their threading rules.</p>
+""" .
+
+############
+## Plugin ##
+############
+
+lv2:PluginBase a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Resource ;
+    lv2:documentation """
+<p>An abstract plugin-like resource that MAY not actually be an LV2 plugin
+(e.g. may not actually have a plugin binary).</p>
+
+<p>PluginBase SHOULD be used as a base type for any resource that may have
+ports or otherwise mimic the structure of a Plugin (e.g. a preset), since
+hosts and other tools already <q>understand</q> this structure.</p>
+""" .
+    
+lv2:Plugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:PluginBase ;
+    rdfs:label "Plugin" ;
+    rdfs:subClassOf [
+        a owl:Restriction ;
+        owl:onProperty doap:name ;
+        owl:someValuesFrom xsd:string ;
+        rdfs:comment """
+A Plugin MUST have at least one doap:name that is a string
+with no language tag.
+""" ] ;
+    lv2:documentation """
+<p>The class which represents an LV2 plugin.</p>
+
+<p>To be discovered by hosts, plugins MUST explicitly have rdf:type lv2:Plugin
+listed in their bundle's manifest, e.g.:</p>
+<pre class="turtle-code">
+&lt;http://example.org/my-plugin&gt; a lv2:Plugin .
+</pre>
+
+<p>Plugins SHOULD have a doap:license property whenever possible. The doap:name
+property should be at most a few words in length using title capitalization,
+e.g. <q>Tape Delay Unit</q>. Use doap:shortdesc or doap:description for more
+detailed descriptions.</p>
+""" .
+
+##########
+## Port ##
+##########
+
+lv2:Port a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Resource ;
+    rdfs:label   "Port" ;
+    rdfs:subClassOf [
+         a owl:Restriction ;
+         owl:onProperty lv2:index ;
+         owl:allValuesFrom xsd:nonNegativeInteger ;
+         owl:cardinality 1 ;
+         rdfs:comment """
+A port MUST have a single lv2:index which is of type xsd:nonNegativeInteger
+(e.g. a non-negative integer literal in Turtle). The actual RDF datatype
+of the index MAY be xsd:integer (which is what a generic Turtle parser
+will do), but the value itself MUST be non-negative.
+"""  ] , [
+         a owl:Restriction ;
+         owl:onProperty lv2:symbol ;
+         owl:someValuesFrom xsd:string ;
+         rdfs:comment """
+A port MUST have a single lv2:symbol which is of type xsd:string with no
+language tag.
+"""  ] , [
+         a owl:Restriction ;
+         owl:onProperty lv2:name ;
+         owl:someValuesFrom xsd:string ;
+         rdfs:comment """
+A port MUST have at least one lv2:name which is of type xsd:string.
+""" ] ;
+    lv2:documentation """
+<p>The class which represents an LV2 port.</p>
+
+<p>All LV2 port descriptions MUST have a rdf:type that is one of lv2:Port
+lv2:InputPort or lv2:OutputPort. Additionally there MUST be at least one other
+rdf:type which more precisely describes type of the port
+(e.g. lv2:AudioPort).</p>
+
+<p>Hosts that do not support a specific port class MUST NOT instantiate the
+plugin, unless that port has the connectionOptional property set (in which case
+the host can simply <q>connect</q> that port to NULL). If a host is interested
+in plugins to insert in a certain signal path (e.g. stereo audio), it SHOULD
+consider all the classes of a port to determine which ports are most suitable
+for connection (e.g. by ignoring ports with additional classes the host does
+not recognize).</p>
+
+<p>A port has two identifiers: a (numeric) index, and a (textual) symbol.
+The index can be used as an identifier at run-time, but persistent references
+to ports (e.g. in a saved preset) MUST use the symbol. A symbol is guaranteed
+to refer to the same port on all plugins with a given URI. An index does NOT
+necessarily refer to the same port on all plugins with a given URI (i.e. the
+index for a port may differ between plugin binaries).</p>
+""" .
+
+lv2:InputPort a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Port ;
+    rdfs:label "Input 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.
+""" .
+
+lv2:OutputPort a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Port ;
+    rdfs:label "Output 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.
+""" .
+
+lv2:ControlPort a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Port ;
+    rdfs:label "Control port" ;
+    lv2:documentation """
+<p>Ports of this type will be connected to a pointer to a single value of C
+type <code>float</code>.</p>
+
+""" .
+
+lv2:AudioPort a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Port ;
+    rdfs:label "Audio port" ;
+    lv2:documentation """
+<p>Ports of this type will be connected to an array of length sample_count
+with elements of C type <code>float</code>.</p>
+""" .
+
+#######################
+## Plugin Properties ##
+#######################
+
+lv2:port a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:PluginBase ;
+    rdfs:range lv2:Port ;
+    rdfs:label "port" ;
+    rdfs:comment "Relates a Plugin to the Ports it contains" .
+
+lv2:minorVersion a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range xsd:nonNegativeInteger ;
+    rdfs:label "minor version" ;
+    lv2:documentation """
+<p>The minor version of an LV2 Resource. This property is used (along with
+lv2:microVersion) by hosts to distinguish different versions of a compatible
+resource, e.g. to load only the bundle with the most recent version.</p>
+
+<p>The version of an LV2 resource is composed of two fields: minor version,
+and micro version. These have the usual semantics:</p>
+
+<ul>
+<li>The minor version MUST be incremented when backwards (but not
+forwards) compatible additions are made, e.g. the addition of a port to a
+plugin.</li>
+
+<li>The micro version is incremented for changes which do not affect
+compatibility at all, e.g. bug fixes or documentation updates.</li>
+</ul>
+
+<p>Note there is deliberately no concept of a major version: all versions of an
+LV2 resource with a given URI are by definition backwards compatible. More
+precisely: replacing a resource with a newer version of that resource MUST NOT
+break anything. If a change is made which breaks this rule, the URI
+of the resource MUST be changed. In contexts where a full (e.g. <a
+href="http://semver.org">SemVer</a> conformant) version number is required, the
+major version of all released LV2 resources is 1.</p>
+
+<p>Plugins and extensions MUST adhere to the following rules:</p>
+<ul>
+<li>All versions of a plugin with a given URI MUST have the <q>same</q> set of
+mandatory (i.e. not lv2:connectionOptional) ports with respect to lv2:symbol
+and rdf:type. In other words, every port on a specific version of a plugin has
+a lv2:symbol and a set of rdf:types; all future versions of that plugin are
+guaranteed to have a port with the same lv2:symbol and at least those
+rdf:types. New types may be added only if doing so does not break
+compatibility, i.e. if old hosts will continue to work correctly with the new
+plugin.</li>
+
+<li>New ports MAY be added without changing the plugin URI if and only if they
+are lv2:connectionOptional and the minor version is incremented.</li>
+
+<li>The minor version MUST be incremented if the index of any port (identified
+by its symbol) is changed.</li>
+
+<li>All versions of an extension MUST be compatible in the sense that an
+implementation of the new version can interoperate with an implementation of
+any previous version.</li>
+</ul>
+
+<p>(Note these rules are not necessarily exhaustive)</p>
+
+<p>Anything that depends on a specific version of a plugin (e.g. a
+serialisation that references ports by index) MUST refer to the plugin by both
+URI and version. However, implementations should be tolerant and extensions
+should be designed such that there is no need to do this (e.g. indices should
+only be meaningful for a particular plugin <em>instance</em> at run-time).</p>
+
+<p>When hosts discover several installed versions of a resource, they SHOULD
+warn the user and load only the most recent version.</p>
+
+<p>An odd minor <em>or</em> micro version indicates that the resource is a
+possibly unstable development version. Hosts and tools SHOULD clearly indicate
+this wherever appropriate. Several versions of a resource with an odd version
+may exist; i.e. it is acceptable to work on a development version of a resource
+(e.g. in source control) without worrying about version numbers as long as
+either the minor or micro version is odd.</p>
+
+<p>This property describes half of a resource version. See also <a
+href="http://lv2plug.in/ns/lv2core#minorVersion">lv2:minorVersion</a>, the
+property which describes the other half.</p>
+""" .
+
+lv2:microVersion a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range xsd:nonNegativeInteger ;
+    rdfs:label "micro version" ;
+    lv2:documentation """
+<p>The micro component of a Resource's version.</p>
+
+<p>Releases of plugins and extensions MUST be explicitly versioned. Correct
+version numbers MUST always be maintained for any versioned resource that is
+published. For example, after a release, if a change is made in the development
+version in source control, the micro version MUST be incremented (to an odd
+number) to distinguish this modified version from the previous release.</p>
+
+<p>This property describes half of a resource version. For detailed
+documentation on LV2 resource versioning, see <a
+href="http://lv2plug.in/ns/lv2core#minorVersion">lv2:minorVersion</a>.</p>
+""" .
+
+lv2:binary a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range owl:Thing ;
+    rdfs:label "binary" ;
+    lv2:documentation """
+<p>The binary of an LV2 resource. The value of this property must be a URI that
+resolves to a shared library object (the actual type of this library is system
+specific).</p>
+
+<p>This is a required property of a Plugin which MUST be included in the
+bundle's manifest.ttl file. The lv2:binary of an lv2:Plugin is the
+shared object containing the <code>lv2_descriptor()</code> function which can
+be used to access the descriptor for that plugin. This property may be used
+similarly by extensions to relate other resources to their implementations.</p>
+""" .
+
+lv2:appliesTo a rdf:Property , owl:ObjectProperty ;
+	rdfs:domain lv2:Resource ;
+	rdfs:range lv2:Plugin ;
+	rdfs:label "Applies to" ;
+	lv2:documentation """
+<p>Specifies that a resource is related to a plugin. This is primarily intended
+for discovery purposes: bundles that describe resources that work with
+particular plugins (e.g. presets or user interfaces) SHOULD use this predicate
+in manifest.ttl to relate the resource to the applicable
+plugin(s), e.g.:</p>
+<pre class="turtle-code">
+&lt;thing&gt;
+    a             ext:Thing ;
+    lv2:appliesTo &lt;plugin&gt; ;
+    rdfs:seeAlso  &lt;thing.ttl&gt; .
+</pre>
+
+<p>Particularly for large amounts of data, this is preferable to
+extending the plugin description with rdfs:seeAlso since the host may choose
+if/when to load the data, knowing that it describes an additional resource and
+not the plugin itself.</p>
+""" .
+
+#####################
+## Port Properties ##
+#####################
+
+lv2:index a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:range xsd:nonNegativeInteger ;
+    rdfs:label "index" ;
+    rdfs:comment """
+Specifies the index of the port, passed as an argument to the connect port
+function. The index uniqely identifies the port on an instance of the plugin.
+""" .
+
+lv2:symbol a rdf:Property , owl:DatatypeProperty ;
+    rdfs:label "symbol" ;
+    rdfs:comment """
+A short name used as a machine and human readable identifier.
+
+The first character must be one of _, a-z or A-Z and subsequenct characters can
+be from _, a-z, A-Z and 0-9.
+
+A language tag MUST NOT be used on this property. The symbol uniquely
+identifies the port on a plugin with a given URI (i.e. the plugin author MUST
+change the plugin URI if a port symbol is changed or removed).
+""" .
+
+lv2:name a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:label "name" ;
+    rdfs:comment """
+A display name for labeling the Port in a user interface.
+
+This property is required for Ports, but MUST NOT be used by the host for
+port identification. The plugin author may change the values of this
+property without changing the Plugin URI.
+""" .
+
+###########################
+## Port Range and Points ##
+###########################
+
+lv2:Point a rdfs:Class , owl:Class ;
+    rdfs:label "Port value point" ;
+    # Unfortunately, it is illegal to specify restrictions on rdfs:label or
+    # rdf:value.  If the migration can be handled gracefully, it would be
+    # good to switch to more appropriate predicates here for validators.
+    lv2:documentation """
+<p>A Point describes an interesting value in a Port's range (much like a labeled
+<q>notch</q> on a physical knob).</p>
+<ul>
+  <li>A Point MUST have at least one rdfs:label which is a string.</li>
+  <li>A Point MUST have exactly one rdf:value with a type that is compatible
+  with the type of the corresponding Port.</li>
+</ul>
+""" .
+
+lv2:ScalePoint a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Point ;
+    rdfs:comment "A single float Point (for control inputs)." .
+
+lv2:scalePoint a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:range lv2:ScalePoint ;
+    rdfs:label "Scale point" ;
+    rdfs:comment "Relates a Port to its ScalePoints." .
+
+lv2:default a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:label "Default value" ;
+    rdfs:comment """
+The default value that the host SHOULD set this port to when there is no
+other information available.
+""" .
+
+lv2:minimum a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:label "Minimum value" ;
+    lv2:documentation """
+<p>A hint to the host for the minimum useful value that the port will use. This
+is a <q>soft</q> limit; the plugin is required to gracefully accept all values
+in the range of a port's data type.</p>
+""" .
+
+lv2:maximum a rdf:Property , owl:DatatypeProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:label "Maximum value" ;
+    lv2:documentation """
+<p>A hint to the host for the maximum useful value that the port will use.
+This is a <q>soft</q> limit; the plugin is required to gracefully accept all
+values in the range of a port's data type.</p>
+""" .
+
+#############
+## Feature ##
+#############
+
+lv2:Feature a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Resource ;
+    rdfs:label "Feature" ;
+    rdfs:comment """
+An additional feature which a plugin or other resource may use or require.
+""".
+
+lv2:optionalFeature a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range lv2:Feature ;
+    rdfs:label "Optional feature" ;
+    lv2:documentation """
+<p>Signifies that a plugin or other resource supports a certain feature. If
+the host supports this feature, it MUST pass its URI and any additional data to
+the plugin in LV2_Descriptor::instantiate(). The plugin MUST NOT fail to
+instantiate if an optional feature is not supported by the host.</p>
+""" .
+
+lv2:requiredFeature a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range lv2:Feature ;
+    rdfs:label "Required feature" ;
+    lv2:documentation """
+<p>Signifies that a plugin or other resource requires a certain feature. If
+the host supports this feature, it MUST pass its URI and any additional data to
+the plugin in LV2_Descriptor::instantiate(). The plugin MUST fail to
+instantiate if a required feature is not present; hosts SHOULD always check
+this before attempting to instantiate a plugin (i.e. discovery by attempting to
+instantiate is strongly discouraged).</p>
+""" .
+
+####################
+## Extension Data ##
+####################
+
+lv2:ExtensionData a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Resource ;
+    rdfs:label "Extension Data" ;
+    rdfs:comment """
+Additional data and/or functions a plugin may return from
+LV2_Descriptor:extension_data() which can be used to add additional API beyond
+that defined by LV2_Descriptor.
+""".
+
+lv2:extensionData a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Resource ;
+    rdfs:range lv2:ExtensionData ;
+    rdfs:label "Available extension data" ;
+    lv2:documentation """
+<p>Signifies that a plugin provides additional data or functions (as defined by
+some extension) via LV2:Descriptor::instantiate().</p>
+""" .
+
+#######################
+## Standard Features ##
+#######################
+
+lv2:isLive a lv2:Feature ;
+    rdfs:label "Has a live (realtime) dependency" ;
+    lv2:documentation """
+<p>Indicates that the plugin has a real-time dependency (e.g. queues data from
+a socket) and so its output must not be cached or subject to significant
+latency, and calls to the run method should be done in rapid succession. This
+property is not related to <q>hard real-time</q> execution requirements (see
+lv2:hardRTCapable).</p>
+""" .
+
+lv2:inPlaceBroken a lv2:Feature ;
+    rdfs:label "In-place broken" ;
+    lv2:documentation """
+<p>Indicates that the plugin may cease to work correctly if the host elects to
+use the same data location for both input and output. Plugins that will fail
+to work correctly if ANY input port is connected to the same location as ANY
+output port MUST require this Feature. Doing so should be avoided as it makes
+it impossible for hosts to use the plugin to process data <q>in-place</q>.</p>
+""" .
+
+lv2:hardRTCapable a lv2:Feature ;
+    rdfs:label "Hard realtime capable" ;
+    lv2:documentation """
+<p>Indicates that the plugin is capable of running not only in a conventional
+host but also in a <q>hard real-time</q> environment. To qualify for this the
+plugin MUST satisfy all of the following:</p>
+<ol>
+<li>The plugin MUST NOT use malloc(), free() or other heap memory management
+    functions within its Audio class functions.</li>
+
+<li>The plugin MUST NOT attempt to make use of any library functions in its
+    Audio class functions, unless those functions themselves adhere to these
+    rules (i.e. are hard realtime safe). The plugin MAY assume the standard C
+    and C math library functions are safe.</li>
+
+<li>The plugin will not access files, devices, pipes, sockets, IPC or any other
+    mechanism that might result in process or thread blocking within its Audio
+    class functions.</li>
+      
+<li>The plugin will take an amount of time to execute a run() call
+    approximately of form <code>A + B * sample_count</code> where <code>A</code>
+    and <code>B</code> depend on the machine and host in use. This amount of
+    time MUST NOT depend on input signals or plugin state.</li>
+</ol>
+<p>Note these rules apply to the connect_port() function as well as run().</p>
+""" .
+
+##################
+## PortProperty ##
+##################
+
+lv2:PortProperty a rdfs:Class , owl:Class ;
+    rdfs:label "Port property" ;
+    rdfs:comment """
+A port property - a useful piece of information that allows a host to make more
+sensible decisions (e.g. to provide a better interface).
+""" .
+
+lv2:portProperty a rdf:Property , owl:ObjectProperty ;
+    rdfs:domain lv2:Port ;
+    rdfs:range lv2:PortProperty ;
+    rdfs:label "Port property" ;
+    rdfs:comment """
+Relates Ports to PortProperties. The PortProperty may be ignored without 
+catastrophic effects, though it may be useful e.g. for providing a sensible
+interface for the port.
+""" .
+
+#############################
+## Standard PortProperties ##
+#############################
+
+lv2:connectionOptional a lv2:PortProperty ;
+    rdfs:label "Optionally connected port" ;
+    rdfs:comment """
+Indicates that this port does not have to be connected to valid data by the
+host. If it is to be disconnected then the port MUST set to NULL with a call
+to the connectPort method.
+""" .
+
+lv2:reportsLatency a lv2:PortProperty ;
+    rdfs:label "Latency reporting port" ;
+    lv2:documentation """
+<p>Indicates that the port is used to express the processing latency incurred
+by the plugin, expressed in samples. The latency may be affected by the current
+sample rate, plugin settings, or other factors, and may be changed by the
+plugin at any time. Where the latency is frequency dependent the plugin may
+choose any appropriate value. If a plugin introduces latency it MUST provide
+EXACTLY ONE port with this property set which informs the host of the
+<q>correct</q> latency. In <q>fuzzy</q> cases the value output should be the
+most reasonable based on user expectation of input/output alignment
+(eg. musical delay/echo plugins should not report their delay as latency, as it
+is an intentional effect).</p>
+""" .
+
+lv2:toggled a lv2:PortProperty ;
+    rdfs:label "Toggled" ;
+    lv2:documentation """
+<p>Indicates that the data item should be considered a Boolean toggle. Data
+less than or equal to zero should be considered <q>off</q> or <q>false</q>, and
+data above zero should be considered <q>on</q> or <q>true</q>.</p>
+""" .
+
+lv2:sampleRate a lv2:PortProperty ;
+    rdfs:label "Sample rate" ;
+    rdfs:comment """
+Indicates that any bounds specified should be interpreted as multiples of the
+sample rate. For instance, a frequency range from 0Hz to the Nyquist frequency
+(half the sample rate) could be requested by this property in conjunction with
+lv2:minimum 0.0 and lv2:maximum 0.5.
+Hosts that support bounds at all MUST support this property.
+""" .
+
+lv2:integer a lv2:PortProperty ;
+    rdfs:label "Integer" ;
+    rdfs:comment """
+Indicates that a port's reasonable values are integers (eg. a user interface
+would likely wish to provide a stepped control allowing only integer input).
+A plugin MUST operate reasonably even if such a port has a non-integer input.
+""" .
+
+lv2:enumeration a lv2:PortProperty ;
+    rdfs:label "Enumeration" ;
+    rdfs:comment """  
+Indicates that a port's only reasonable values are the scale points defined for
+that port. A host SHOULD NOT allow a user to set the value of such a port to
+anything other than a scale point. However, a plugin MUST operate reasonably
+even if such a port has an input that is not a scale point, preferably by
+simply choosing the largest enumeration value less than or equal to the actual
+input value (i.e. round the input value down).
+""" .
+
+####################
+## Plugin Classes ##
+####################
+
+lv2:GeneratorPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Generator" ;
+    rdfs:comment """
+Any plugin that generates sound internally, rather than processing its input.
+""" .
+
+lv2:InstrumentPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:GeneratorPlugin ;
+    rdfs:label "Instrument" ;
+    rdfs:comment """
+Any plugin that is intended to be played as a musical instrument.
+""" .
+
+lv2:OscillatorPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:GeneratorPlugin ;
+    rdfs:label "Oscillator" .
+
+lv2:UtilityPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Utility" ;
+    rdfs:comment """
+Includes things like mathematical functions and non-musical delays.
+""" .
+
+lv2:ConverterPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:UtilityPlugin ;
+    rdfs:label "Converter" ;
+    rdfs:comment """
+Any plugin that converts some form of input into a different form of output.
+""" .
+
+lv2:AnalyserPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:UtilityPlugin ;
+    rdfs:label "Analyser" ;
+    rdfs:comment """
+Any plugin that analyses input to output some useful information.
+""" .
+
+lv2:MixerPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:UtilityPlugin ;
+    rdfs:label "Mixer" ;
+    rdfs:comment """
+A plugin which mixes some number of inputs into some number of outputs.
+""" .
+
+lv2:SimulatorPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Simulator" ;
+    rdfs:comment """
+Plugins that aim to duplicate the effect of some environmental effect or
+musical equipment.
+""" .
+
+lv2:DelayPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Delay" ;
+    rdfs:comment """
+Plugins that intentionally delay their input signal as an effect.
+""" .
+
+lv2:ModulatorPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Modulator" .
+
+lv2:ReverbPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:subClassOf lv2:SimulatorPlugin ;
+    rdfs:subClassOf lv2:DelayPlugin ;
+    rdfs:label "Reverb" .
+
+lv2:PhaserPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:ModulatorPlugin ;
+    rdfs:label "Phaser" .
+
+lv2:FlangerPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:ModulatorPlugin ;
+    rdfs:label "Flanger" .
+
+lv2:ChorusPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:ModulatorPlugin ;
+    rdfs:label "Chorus" .
+
+lv2:FilterPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Filter" .
+
+lv2:LowpassPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Lowpass" .
+
+lv2:BandpassPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Bandpass" .
+
+lv2:HighpassPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Highpass" .
+
+lv2:CombPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Comb" .
+
+lv2:AllpassPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Allpass" .
+
+lv2:EQPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:FilterPlugin ;
+    rdfs:label "Equaliser" .
+
+lv2:ParaEQPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:EQPlugin ;
+    rdfs:label "Parametric" .
+
+lv2:MultiEQPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:EQPlugin ;
+    rdfs:label "Multiband" .
+
+lv2:SpatialPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Spatial" ;
+    rdfs:comment """
+Plugins that manipulate the position of audio in space (e.g. panning,
+stereo width, surround encoding, etc.).
+""" .
+
+lv2:SpectralPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Spectral" ;
+    rdfs:comment """
+Plugins that alter the spectral properties (e.g. frequency) of audio.
+""" .
+
+lv2:PitchPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:SpectralPlugin ;
+    rdfs:label "Pitch Shifter" .
+
+lv2:AmplifierPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DynamicsPlugin ;
+    rdfs:label "Amplifier" .
+
+lv2:DistortionPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Distortion" .
+
+lv2:WaveshaperPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DistortionPlugin ;
+    rdfs:label "Waveshaper" .
+
+lv2:DynamicsPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:Plugin ;
+    rdfs:label "Dynamics" ;
+    rdfs:comment """
+Plugins that alter the envelope or dynamic range of audio.
+""" .
+
+lv2:CompressorPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DynamicsPlugin ;
+    rdfs:label "Compressor" .
+
+lv2:ExpanderPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DynamicsPlugin ;
+    rdfs:label "Expander" .
+
+lv2:LimiterPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DynamicsPlugin ;
+    rdfs:label "Limiter" .
+
+lv2:GatePlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:DynamicsPlugin ;
+    rdfs:label "Gate" .
+
+lv2:FunctionPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:UtilityPlugin ;
+    rdfs:label "Function" .
+
+lv2:ConstantPlugin a rdfs:Class , owl:Class ;
+    rdfs:subClassOf lv2:GeneratorPlugin ;
+    rdfs:label "Constant" .
diff --git a/ns/lv2core/manifest.ttl b/ns/lv2core/manifest.ttl
new file mode 100644
index 0000000..cf23e82
--- /dev/null
+++ b/ns/lv2core/manifest.ttl
@@ -0,0 +1,10 @@
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
+@prefix owl:  <http://www.w3.org/2002/07/owl#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+
+<http://lv2plug.in/ns/lv2core>
+	a doap:Project , lv2:Specification , owl:Ontology ;
+	lv2:minorVersion 4 ;
+	lv2:microVersion 1 ;
+	rdfs:seeAlso <lv2core.ttl> , <lv2core.doap.ttl> .
\ No newline at end of file
diff --git a/ns/lv2core/waf b/ns/lv2core/waf
new file mode 100755
index 0000000..ef338a3
--- /dev/null
+++ b/ns/lv2core/waf
diff --git a/ns/lv2core/wscript b/ns/lv2core/wscript
new file mode 100644
index 0000000..d57985f
--- /dev/null
+++ b/ns/lv2core/wscript
@@ -0,0 +1,102 @@
+#!/usr/bin/env python
+import os
+
+from waflib.extras import autowaf as autowaf
+import waflib.Options as Options
+
+# Version of this package (even if built as a child)
+LV2CORE_VERSION = '4.1'
+
+# Variables for 'waf dist'
+APPNAME = 'lv2core'
+VERSION = LV2CORE_VERSION
+
+# Mandatory variables
+top = '.'
+out = 'build'
+
+def options(opt):
+    opt.load('compiler_c')
+    autowaf.set_options(opt)
+    opt.add_option('--bundle-only', action='store_true', default=False,
+                   dest='bundle_only',
+                   help="Only install bundle (not header or pkg-config file)")
+    opt.add_option('--copy-headers', action='store_true', default=False,
+                   dest='copy_headers',
+                   help='Copy headers instead of linking to bundle')
+
+def configure(conf):
+    conf.load('compiler_c')
+    autowaf.configure(conf)
+
+    autowaf.display_msg(conf, "LV2 bundle directory", conf.env['LV2DIR'])
+    print('')
+
+def write_news(bld):
+    import rdflib
+    import textwrap
+    from time import strftime, strptime
+
+    doap = rdflib.Namespace('http://usefulinc.com/ns/doap#')
+    dcs  = rdflib.Namespace('http://ontologi.es/doap-changeset#')
+    rdfs = rdflib.Namespace('http://www.w3.org/2000/01/rdf-schema#')
+    foaf = rdflib.Namespace('http://xmlns.com/foaf/0.1/')
+    rdf  = rdflib.Namespace('http://www.w3.org/1999/02/22-rdf-syntax-ns#')
+
+    m = rdflib.ConjunctiveGraph()
+    m.parse('lv2-doap.ttl', format='n3')
+    spec = m.value(None, rdf.type, doap.Project)
+
+    entries = {}
+    for r in m.triples([spec, doap.release, None]):
+        release   = r[2]
+        revision  = m.value(release, doap.revision, None) or '9999'
+        date      = m.value(release, doap.created, None) or '9999-01-01'
+        blamee    = m.value(release, dcs.blame, None)
+        changeset = m.value(release, dcs.changeset, None)
+
+        entry = '%s (%s) stable;\n' % (APPNAME, revision)
+
+        if changeset:
+            for i in m.triples([changeset, dcs.item, None]):
+                entry += '\n  * ' + '\n    '.join(
+                    textwrap.wrap(m.value(i[2], rdfs.label, None), width=79))
+
+        entry += '\n\n -- %s <%s>  %s\n\n' % (
+            m.value(blamee, foaf.name, None),
+            m.value(blamee, foaf.mbox, None).replace('mailto:', ''),
+            strftime('%a, %d %b %Y %H:%M:%S +0000', strptime(date, '%Y-%m-%d')))
+
+        entries[revision] = entry
+
+    news = open('NEWS', 'w')
+    for e in sorted(entries.keys(), reverse=True):
+        news.write(entries[e])
+    news.close()
+
+def build(bld):
+    # Header "library"
+    obj = bld(export_includes = ['.'],
+              name            = 'liblv2core',
+              target          = 'lv2core')
+
+    # Bundle (data)
+    bld.install_files('${LV2DIR}/lv2core.lv2', 'lv2.ttl manifest.ttl')
+
+    if not Options.options.bundle_only:
+        # Header
+        bld.install_files('${INCLUDEDIR}', 'lv2.h')
+        bld.install_files('${LV2DIR}/lv2core.lv2', 'lv2.h')
+
+        # Pkgconfig file
+        autowaf.build_pc(bld, 'LV2CORE', LV2CORE_VERSION, '', [])
+
+        # URI-like header include
+        include_dir = os.path.join(bld.env['INCLUDEDIR'], 'lv2/lv2plug.in/ns')
+        bundle_dir  = os.path.join(bld.env['LV2DIR'], 'lv2core.lv2')
+        if bld.env['COPY_HEADERS']:
+            bld.install_files(os.path.join(include_dir, 'lv2core'),
+                              bld.path.ant_glob('*.h'))
+        else:
+            bld.symlink_as(os.path.join(include_dir, 'lv2core'),
+                           os.path.relpath(bundle_dir, include_dir))