Update DPF, test for lv2 ui:showInterface

20 files changed, 386 insertions, 131 deletions

diff --git a/libs/distrho/src/DistrhoPluginLV2export.cpp b/libs/distrho/src/DistrhoPluginLV2export.cpp
index a920f40..2ba3b20 100644
--- a/libs/distrho/src/DistrhoPluginLV2export.cpp
+++ b/libs/distrho/src/DistrhoPluginLV2export.cpp
@@ -98,11 +98,12 @@ void lv2_generate_ttl(const char* const basename)
 # else
         manifestString += "    ui:binary <" + pluginLabel + "." DISTRHO_DLL_EXTENSION "> ;\n";
 #endif
-# if DISTRHO_PLUGIN_WANT_PROGRAMS
         manifestString += "    lv2:extensionData ui:idleInterface ,\n";
+# if DISTRHO_PLUGIN_WANT_PROGRAMS
+        manifestString += "                      ui:showInterface ,\n";
         manifestString += "                      <" LV2_PROGRAMS__Interface "> ;\n";
 # else
-        manifestString += "    lv2:extensionData ui:idleInterface ;\n";
+        manifestString += "                      ui:showInterface ;\n";
 # endif
         manifestString += "    lv2:optionalFeature ui:noUserResize ,\n";
         manifestString += "                        ui:touch ;\n";
diff --git a/libs/distrho/src/DistrhoUIInternal.hpp b/libs/distrho/src/DistrhoUIInternal.hpp
index 2672a85..e398624 100644
--- a/libs/distrho/src/DistrhoUIInternal.hpp
+++ b/libs/distrho/src/DistrhoUIInternal.hpp
@@ -233,6 +233,11 @@ public:
         return ! glApp.isQuiting();
     }
 
+    bool isVisible() const noexcept
+    {
+        return glWindow.isVisible();
+    }
+
     void quit()
     {
         glWindow.close();
@@ -254,9 +259,11 @@ public:
         glWindow.setTransientWinId(winId);
     }
 
-    void setVisible(const bool yesNo)
+    bool setVisible(const bool yesNo)
     {
         glWindow.setVisible(yesNo);
+
+        return ! glApp.isQuiting();
     }
 
 private:
diff --git a/libs/distrho/src/DistrhoUILV2.cpp b/libs/distrho/src/DistrhoUILV2.cpp
index ad7271f..3024d57 100644
--- a/libs/distrho/src/DistrhoUILV2.cpp
+++ b/libs/distrho/src/DistrhoUILV2.cpp
@@ -42,7 +42,8 @@ public:
           fController(controller),
           fWriteFunction(writeFunc),
           fEventTransferURID(uridMap->map(uridMap->handle, LV2_ATOM__eventTransfer)),
-          fKeyValueURID(uridMap->map(uridMap->handle, "urn:distrho:keyValueState"))
+          fKeyValueURID(uridMap->map(uridMap->handle, "urn:distrho:keyValueState")),
+          fWinIdWasNull(winId == 0)
     {
         fUiResize->ui_resize(fUiResize->handle, fUI.getWidth(), fUI.getHeight());
 
@@ -72,6 +73,9 @@ public:
         else if (format == fEventTransferURID)
         {
             const LV2_Atom* const atom((const LV2_Atom*)buffer);
+
+            // TODO - check atom type
+
             const char* const stateKey((const char*)LV2_ATOM_BODY_CONST(atom));
             const char* const stateValue(stateKey+std::strlen(stateKey)+1);
 
@@ -85,8 +89,20 @@ public:
 
     int lv2ui_idle()
     {
-        fUI.idle();
-        return 0;
+        if (fWinIdWasNull)
+            return (fUI.idle() && fUI.isVisible()) ? 0 : 1;
+
+        return fUI.idle() ? 0 : 1;
+    }
+
+    int lv2ui_show()
+    {
+        return fUI.setVisible(true) ? 0 : 1;
+    }
+
+    int lv2ui_hide()
+    {
+        return fUI.setVisible(false) ? 0 : 1;
     }
 
     // -------------------------------------------------------------------
@@ -174,6 +190,9 @@ private:
     const LV2_URID fEventTransferURID;
     const LV2_URID fKeyValueURID;
 
+    // using ui:showInterface if true
+    bool fWinIdWasNull;
+
     // -------------------------------------------------------------------
     // Callbacks
 
@@ -271,8 +290,7 @@ static LV2UI_Handle lv2ui_instantiate(const LV2UI_Descriptor*, const char* uri,
 
     if (parentId == nullptr)
     {
-        d_stderr("Parent Window Id missing, cannot continue!");
-        return nullptr;
+        d_stdout("Parent Window Id missing, host should use be ui:showInterface...");
     }
 
 #if DISTRHO_PLUGIN_WANT_DIRECT_ACCESS
@@ -335,6 +353,16 @@ static int lv2ui_idle(LV2UI_Handle ui)
     return uiPtr->lv2ui_idle();
 }
 
+static int lv2ui_show(LV2UI_Handle ui)
+{
+    return uiPtr->lv2ui_show();
+}
+
+static int lv2ui_hide(LV2UI_Handle ui)
+{
+    return uiPtr->lv2ui_hide();
+}
+
 #if DISTRHO_PLUGIN_WANT_PROGRAMS
 static void lv2ui_select_program(LV2UI_Handle ui, uint32_t bank, uint32_t program)
 {
@@ -347,9 +375,12 @@ static void lv2ui_select_program(LV2UI_Handle ui, uint32_t bank, uint32_t progra
 static const void* lv2ui_extension_data(const char* uri)
 {
     static const LV2UI_Idle_Interface uiIdle = { lv2ui_idle };
+    static const LV2UI_Show_Interface uiShow = { lv2ui_show, lv2ui_hide };
 
     if (std::strcmp(uri, LV2_UI__idleInterface) == 0)
         return &uiIdle;
+    if (std::strcmp(uri, LV2_UI__showInterface) == 0)
+        return &uiShow;
 
 #if DISTRHO_PLUGIN_WANT_PROGRAMS
     static const LV2_Programs_UI_Interface uiPrograms = { lv2ui_select_program };
diff --git a/libs/distrho/src/lv2/atom-forge.h b/libs/distrho/src/lv2/atom-forge.h
index c727121..d803d23 100644
--- a/libs/distrho/src/lv2/atom-forge.h
+++ b/libs/distrho/src/lv2/atom-forge.h
@@ -1,5 +1,5 @@
 /*
-  Copyright 2008-2012 David Robillard <http://drobilla.net>
+  Copyright 2008-2013 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
@@ -48,6 +48,12 @@
 #include "atom-util.h"
 #include "urid.h"
 
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
+#    define LV2_ATOM_FORGE_DEPRECATED __attribute__((__deprecated__))
+#else
+#    define LV2_ATOM_FORGE_DEPRECATED
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #else
@@ -89,7 +95,7 @@ typedef struct {
 
 	LV2_Atom_Forge_Frame* stack;
 
-	LV2_URID Blank;
+	LV2_URID Blank LV2_ATOM_FORGE_DEPRECATED;
 	LV2_URID Bool;
 	LV2_URID Chunk;
 	LV2_URID Double;
@@ -97,9 +103,10 @@ typedef struct {
 	LV2_URID Int;
 	LV2_URID Long;
 	LV2_URID Literal;
+	LV2_URID Object;
 	LV2_URID Path;
 	LV2_URID Property;
-	LV2_URID Resource;
+	LV2_URID Resource LV2_ATOM_FORGE_DEPRECATED;
 	LV2_URID Sequence;
 	LV2_URID String;
 	LV2_URID Tuple;
@@ -120,6 +127,13 @@ lv2_atom_forge_set_buffer(LV2_Atom_Forge* forge, uint8_t* buf, size_t size);
 static inline void
 lv2_atom_forge_init(LV2_Atom_Forge* forge, LV2_URID_Map* map)
 {
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
 	lv2_atom_forge_set_buffer(forge, NULL, 0);
 	forge->Blank    = map->map(map->handle, LV2_ATOM__Blank);
 	forge->Bool     = map->map(map->handle, LV2_ATOM__Bool);
@@ -129,6 +143,7 @@ lv2_atom_forge_init(LV2_Atom_Forge* forge, LV2_URID_Map* map)
 	forge->Int      = map->map(map->handle, LV2_ATOM__Int);
 	forge->Long     = map->map(map->handle, LV2_ATOM__Long);
 	forge->Literal  = map->map(map->handle, LV2_ATOM__Literal);
+	forge->Object   = map->map(map->handle, LV2_ATOM__Object);
 	forge->Path     = map->map(map->handle, LV2_ATOM__Path);
 	forge->Property = map->map(map->handle, LV2_ATOM__Property);
 	forge->Resource = map->map(map->handle, LV2_ATOM__Resource);
@@ -138,6 +153,11 @@ lv2_atom_forge_init(LV2_Atom_Forge* forge, LV2_URID_Map* map)
 	forge->URI      = map->map(map->handle, LV2_ATOM__URI);
 	forge->URID     = map->map(map->handle, LV2_ATOM__URID);
 	forge->Vector   = map->map(map->handle, LV2_ATOM__Vector);
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic pop
+#endif
 }
 
 static inline LV2_Atom*
@@ -184,8 +204,51 @@ lv2_atom_forge_pop(LV2_Atom_Forge* forge, LV2_Atom_Forge_Frame* frame)
 static inline bool
 lv2_atom_forge_top_is(LV2_Atom_Forge* forge, uint32_t type)
 {
-	return forge->stack &&
-		lv2_atom_forge_deref(forge, forge->stack->ref)->type == type;
+	return forge->stack && forge->stack->ref &&
+		(lv2_atom_forge_deref(forge, forge->stack->ref)->type == type);
+}
+
+/** Return true iff @p type is an atom:Object. */
+static inline bool
+lv2_atom_forge_is_object_type(const LV2_Atom_Forge* forge, uint32_t type)
+{
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+	return (type == forge->Object ||
+	        type == forge->Blank ||
+	        type == forge->Resource);
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic pop
+#endif
+}
+
+/** Return true iff @p type is an atom:Object with a blank ID. */
+static inline bool
+lv2_atom_forge_is_blank(const LV2_Atom_Forge*       forge,
+                        uint32_t                    type,
+                        const LV2_Atom_Object_Body* body)
+{
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
+	return (type == forge->Blank ||
+	        (type == forge->Object && body->id == 0));
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic pop
+#endif
 }
 
 /**
@@ -199,7 +262,7 @@ static inline void
 lv2_atom_forge_set_buffer(LV2_Atom_Forge* forge, uint8_t* buf, size_t size)
 {
 	forge->buf    = buf;
-	forge->size   = size;
+	forge->size   = (uint32_t)size;
 	forge->offset = 0;
 	forge->deref  = NULL;
 	forge->sink   = NULL;
@@ -253,7 +316,7 @@ lv2_atom_forge_raw(LV2_Atom_Forge* forge, const void* data, uint32_t size)
 	if (forge->sink) {
 		out = forge->sink(forge->handle, data, size);
 	} else {
-		out = (LV2_Atom_Forge_Ref)forge->buf + forge->offset;
+		out = (LV2_Atom_Forge_Ref)forge->buf + (LV2_Atom_Forge_Ref)forge->offset;
 		uint8_t* mem = forge->buf + forge->offset;
 		if (forge->offset + size > forge->size) {
 			return 0;
@@ -321,7 +384,8 @@ lv2_atom_forge_primitive(LV2_Atom_Forge* forge, const LV2_Atom* a)
 	if (lv2_atom_forge_top_is(forge, forge->Vector)) {
 		return lv2_atom_forge_raw(forge, LV2_ATOM_BODY_CONST(a), a->size);
 	} else {
-		return lv2_atom_forge_write(forge, a, sizeof(LV2_Atom) + a->size);
+		return lv2_atom_forge_write(
+			forge, a, (uint32_t)sizeof(LV2_Atom) + a->size);
 	}
 }
 
@@ -503,7 +567,7 @@ lv2_atom_forge_tuple(LV2_Atom_Forge* forge, LV2_Atom_Forge_Frame* frame)
 }
 
 /**
-   Write the header of an atom:Resource.
+   Write the header of an atom:Object.
 
    The passed frame will be initialised to represent this object.  To complete
    the object, write a sequence of properties, then pop the frame with
@@ -514,12 +578,12 @@ lv2_atom_forge_tuple(LV2_Atom_Forge* forge, LV2_Atom_Forge_Frame* frame)
    LV2_URID eg_Cat  = map("http://example.org/Cat");
    LV2_URID eg_name = map("http://example.org/name");
 
-   // Write object header
+   // Start object with type eg_Cat and blank ID
    LV2_Atom_Forge_Frame frame;
-   lv2_atom_forge_resource(forge, &frame, 1, eg_Cat);
+   lv2_atom_forge_object(forge, &frame, 0, eg_Cat);
 
-   // Write property: eg:name = "Hobbes"
-   lv2_atom_forge_property_head(forge, eg_name, 0);
+   // Append property eg:name = "Hobbes"
+   lv2_atom_forge_key(forge, eg_name);
    lv2_atom_forge_string(forge, "Hobbes", strlen("Hobbes"));
 
    // Finish object
@@ -527,39 +591,103 @@ lv2_atom_forge_tuple(LV2_Atom_Forge* forge, LV2_Atom_Forge_Frame* frame)
    @endcode
 */
 static inline LV2_Atom_Forge_Ref
+lv2_atom_forge_object(LV2_Atom_Forge*       forge,
+                      LV2_Atom_Forge_Frame* frame,
+                      LV2_URID              id,
+                      LV2_URID              otype)
+{
+	const LV2_Atom_Object a = {
+		{ (uint32_t)sizeof(LV2_Atom_Object_Body), forge->Object },
+		{ id, otype }
+	};
+	return lv2_atom_forge_push(
+		forge, frame, lv2_atom_forge_write(forge, &a, sizeof(a)));
+}
+
+/**
+   The same as lv2_atom_forge_object(), but for object:Resource.
+
+   This function is deprecated and should not be used in new code.
+   Use lv2_atom_forge_object() directly instead.
+*/
+LV2_ATOM_FORGE_DEPRECATED
+static inline LV2_Atom_Forge_Ref
 lv2_atom_forge_resource(LV2_Atom_Forge*       forge,
                         LV2_Atom_Forge_Frame* frame,
                         LV2_URID              id,
                         LV2_URID              otype)
 {
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
 	const LV2_Atom_Object a = {
-		{ sizeof(LV2_Atom_Object) - sizeof(LV2_Atom), forge->Resource },
+		{ (uint32_t)sizeof(LV2_Atom_Object_Body), forge->Resource },
 		{ id, otype }
 	};
-	LV2_Atom_Forge_Ref out = lv2_atom_forge_write(forge, &a, sizeof(a));
-	return lv2_atom_forge_push(forge, frame, out);
+	return lv2_atom_forge_push(
+		forge, frame, lv2_atom_forge_write(forge, &a, sizeof(a)));
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic pop
+#endif
 }
 
 /**
-   The same as lv2_atom_forge_resource(), but for object:Blank.
+   The same as lv2_atom_forge_object(), but for object:Blank.
+
+   This function is deprecated and should not be used in new code.
+   Use lv2_atom_forge_object() directly instead.
 */
+LV2_ATOM_FORGE_DEPRECATED
 static inline LV2_Atom_Forge_Ref
 lv2_atom_forge_blank(LV2_Atom_Forge*       forge,
                      LV2_Atom_Forge_Frame* frame,
                      uint32_t              id,
                      LV2_URID              otype)
 {
+#if defined(__clang__)
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
 	const LV2_Atom_Object a = {
-		{ sizeof(LV2_Atom_Object) - sizeof(LV2_Atom), forge->Blank },
+		{ (uint32_t)sizeof(LV2_Atom_Object_Body), forge->Blank },
 		{ id, otype }
 	};
-	LV2_Atom_Forge_Ref out = lv2_atom_forge_write(forge, &a, sizeof(a));
-	return lv2_atom_forge_push(forge, frame, out);
+	return lv2_atom_forge_push(
+		forge, frame, lv2_atom_forge_write(forge, &a, sizeof(a)));
+#if defined(__clang__)
+#    pragma clang diagnostic pop
+#elif defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
+#    pragma GCC diagnostic pop
+#endif
+}
+
+/**
+   Write a property key in an Object, to be followed by the value.
+
+   See lv2_atom_forge_object() documentation for an example.
+*/
+static inline LV2_Atom_Forge_Ref
+lv2_atom_forge_key(LV2_Atom_Forge* forge,
+                   LV2_URID        key)
+{
+	const LV2_Atom_Property_Body a = { key, 0, { 0, 0 } };
+	return lv2_atom_forge_write(forge, &a, 2 * (uint32_t)sizeof(uint32_t));
 }
 
 /**
-   Write the header for a property body (likely in an Object).
-   See lv2_atom_forge_resource() documentation for an example.
+   Write the header for a property body in an object, with context.
+
+   If you do not need the context, which is almost certainly the case,
+   use the simpler lv2_atom_forge_key() instead.
 */
 static inline LV2_Atom_Forge_Ref
 lv2_atom_forge_property_head(LV2_Atom_Forge* forge,
@@ -567,7 +695,7 @@ lv2_atom_forge_property_head(LV2_Atom_Forge* forge,
                              LV2_URID        context)
 {
 	const LV2_Atom_Property_Body a = { key, context, { 0, 0 } };
-	return lv2_atom_forge_write(forge, &a, 2 * sizeof(uint32_t));
+	return lv2_atom_forge_write(forge, &a, 2 * (uint32_t)sizeof(uint32_t));
 }
 
 /**
@@ -579,11 +707,11 @@ lv2_atom_forge_sequence_head(LV2_Atom_Forge*       forge,
                              uint32_t              unit)
 {
 	const LV2_Atom_Sequence a = {
-		{ sizeof(LV2_Atom_Sequence) - sizeof(LV2_Atom), forge->Sequence },
+		{ (uint32_t)sizeof(LV2_Atom_Sequence_Body), forge->Sequence },
 		{ unit, 0 }
 	};
-	LV2_Atom_Forge_Ref out = lv2_atom_forge_write(forge, &a, sizeof(a));
-	return lv2_atom_forge_push(forge, frame, out);
+	return lv2_atom_forge_push(
+		forge, frame, lv2_atom_forge_write(forge, &a, sizeof(a)));
 }
 
 /**
diff --git a/libs/distrho/src/lv2/atom-helpers.h b/libs/distrho/src/lv2/atom-helpers.h
index 69bc496..97cef2c 100644
--- a/libs/distrho/src/lv2/atom-helpers.h
+++ b/libs/distrho/src/lv2/atom-helpers.h
@@ -1,7 +1,7 @@
 // lv2_atom_helpers.h
 //
 /****************************************************************************
-   Copyright (C) 2005-2012, rncbc aka Rui Nuno Capela. All rights reserved.
+   Copyright (C) 2005-2013, rncbc aka Rui Nuno Capela. All rights reserved.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
@@ -40,7 +40,7 @@
 #include <stdlib.h>
 #include <assert.h>
 
-#include "atom.h"
+#include "atom-util.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -59,28 +59,18 @@ struct _LV2_Atom_Buffer
 } LV2_Atom_Buffer;
 
 
-// Pad a size to 64 bits (for LV2 atom:Sequence event sizes).
-//
-static inline
-uint32_t lv2_atom_buffer_pad_size ( uint32_t size )
-{
-	return (size + 7) & (~7);
-}
-
-
 // Clear and initialize an existing LV2 atom:Sequenece buffer.
 //
 static inline
 void lv2_atom_buffer_reset ( LV2_Atom_Buffer *buf, bool input )
 {
-	if (input)
+	if (input) {
 		buf->atoms.atom.size = sizeof(LV2_Atom_Sequence_Body);
-	else
+		buf->atoms.atom.type = buf->sequence_type;
+	} else {
 		buf->atoms.atom.size = buf->capacity;
-
-	buf->atoms.atom.type = buf->sequence_type;
-	buf->atoms.body.unit = 0;
-	buf->atoms.body.pad  = 0;
+		buf->atoms.atom.type = buf->chunk_type;
+	}
 }
 
 
@@ -88,12 +78,13 @@ void lv2_atom_buffer_reset ( LV2_Atom_Buffer *buf, bool input )
 //
 static inline
 LV2_Atom_Buffer *lv2_atom_buffer_new (
-	uint32_t capacity, uint32_t sequence_type, bool input )
+	uint32_t capacity, uint32_t chunk_type, uint32_t sequence_type, bool input )
 {
 	LV2_Atom_Buffer *buf = (LV2_Atom_Buffer *)
 		malloc(sizeof(LV2_Atom_Buffer) + sizeof(LV2_Atom_Sequence) + capacity);
 
 	buf->capacity = capacity;
+	buf->chunk_type = chunk_type;
 	buf->sequence_type = sequence_type;
 
 	lv2_atom_buffer_reset(buf, input);
@@ -116,7 +107,10 @@ void lv2_atom_buffer_free ( LV2_Atom_Buffer *buf )
 static inline
 uint32_t lv2_atom_buffer_get_size ( LV2_Atom_Buffer *buf )
 {
-	return buf->atoms.atom.size - sizeof(LV2_Atom_Sequence_Body);
+	if (buf->atoms.atom.type == buf->sequence_type)
+		return buf->atoms.atom.size - uint32_t(sizeof(LV2_Atom_Sequence_Body));
+	else
+		return 0;
 }
 
 
@@ -160,7 +154,7 @@ bool lv2_atom_buffer_end (
 	LV2_Atom_Buffer_Iterator *iter, LV2_Atom_Buffer *buf )
 {
 	iter->buf = buf;
-	iter->offset = lv2_atom_buffer_pad_size(lv2_atom_buffer_get_size(buf));
+	iter->offset = lv2_atom_pad_size(lv2_atom_buffer_get_size(buf));
 
 	return (iter->offset < buf->capacity - sizeof(LV2_Atom_Event));
 }
@@ -187,7 +181,7 @@ bool lv2_atom_buffer_increment ( LV2_Atom_Buffer_Iterator *iter )
 	LV2_Atom_Sequence *atoms = &buf->atoms;
 	uint32_t size = ((LV2_Atom_Event *) ((char *)
 		LV2_ATOM_CONTENTS(LV2_Atom_Sequence, atoms) + iter->offset))->body.size;
-	iter->offset += lv2_atom_buffer_pad_size(sizeof(LV2_Atom_Event) + size);
+	iter->offset += lv2_atom_pad_size(uint32_t(sizeof(LV2_Atom_Event)) + size);
 
 	return true;
 }
@@ -239,7 +233,7 @@ bool lv2_atom_buffer_write (
 
 	memcpy(LV2_ATOM_BODY(&ev->body), data, size);
 
-	size = lv2_atom_buffer_pad_size(sizeof(LV2_Atom_Event) + size);
+	size = lv2_atom_pad_size(uint32_t(sizeof(LV2_Atom_Event)) + size);
 	atoms->atom.size += size;
 	iter->offset += size;
 
diff --git a/libs/distrho/src/lv2/atom-util.h b/libs/distrho/src/lv2/atom-util.h
index 417eca9..c47c0f6 100644
--- a/libs/distrho/src/lv2/atom-util.h
+++ b/libs/distrho/src/lv2/atom-util.h
@@ -1,5 +1,5 @@
 /*
-  Copyright 2008-2012 David Robillard <http://drobilla.net>
+  Copyright 2008-2013 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
@@ -41,14 +41,14 @@ extern "C" {
 static inline uint32_t
 lv2_atom_pad_size(uint32_t size)
 {
-	return (size + 7) & (~7);
+	return (size + 7U) & (~7U);
 }
 
 /** Return the total size of @p atom, including the header. */
 static inline uint32_t
 lv2_atom_total_size(const LV2_Atom* atom)
 {
-	return sizeof(LV2_Atom) + atom->size;
+	return (uint32_t)sizeof(LV2_Atom) + atom->size;
 }
 
 /** Return true iff @p atom is null. */
@@ -80,10 +80,10 @@ lv2_atom_sequence_begin(const LV2_Atom_Sequence_Body* body)
 }
 
 /** Get an iterator pointing to the end of a Sequence body. */
-static inline const LV2_Atom_Event*
-lv2_atom_sequence_end(const LV2_Atom_Sequence_Body* body, uint32_t size)
+static inline LV2_Atom_Event*
+lv2_atom_sequence_end(LV2_Atom_Sequence_Body* body, uint32_t size)
 {
-	return (const LV2_Atom_Event*)((const uint8_t*)body + lv2_atom_pad_size(size));
+	return (LV2_Atom_Event*)((uint8_t*)body + lv2_atom_pad_size(size));
 }
 
 /** Return true iff @p i has reached the end of @p body. */
@@ -99,7 +99,6 @@ lv2_atom_sequence_is_end(const LV2_Atom_Sequence_Body* body,
 static inline const LV2_Atom_Event*
 lv2_atom_sequence_next(const LV2_Atom_Event* i)
 {
-	if (!i) return NULL;
 	return (const LV2_Atom_Event*)((const uint8_t*)i
 	                               + sizeof(LV2_Atom_Event)
 	                               + lv2_atom_pad_size(i->body.size));
@@ -130,6 +129,52 @@ lv2_atom_sequence_next(const LV2_Atom_Event* i)
 
 /**
    @}
+   @name Sequence Utilities
+   @{
+*/
+
+/**
+   Clear all events from @p sequence.
+
+   This simply resets the size field, the other fields are left untouched.
+*/
+static inline void
+lv2_atom_sequence_clear(LV2_Atom_Sequence* seq)
+{
+	seq->atom.size = sizeof(LV2_Atom_Sequence_Body);
+}
+
+/**
+   Append an event at the end of @p sequence.
+
+   @param seq Sequence to append to.
+   @param capacity Total capacity of the sequence atom
+   (e.g. as set by the host for sequence output ports).
+   @param event Event to write.
+
+   @return A pointer to the newly written event in @p seq,
+   or NULL on failure (insufficient space).
+*/
+static inline LV2_Atom_Event*
+lv2_atom_sequence_append_event(LV2_Atom_Sequence*    seq,
+                               uint32_t              capacity,
+                               const LV2_Atom_Event* event)
+{
+	const uint32_t total_size = (uint32_t)sizeof(*event) + event->body.size;
+	if (capacity - seq->atom.size < total_size) {
+		return NULL;
+	}
+
+	LV2_Atom_Event* e = lv2_atom_sequence_end(&seq->body, seq->atom.size);
+	memcpy(e, event, total_size);
+
+	seq->atom.size += lv2_atom_pad_size(total_size);
+
+	return e;
+}
+
+/**
+   @}
    @name Tuple Iterator
    @{
 */
@@ -143,7 +188,7 @@ lv2_atom_tuple_begin(const LV2_Atom_Tuple* tup)
 
 /** Return true iff @p i has reached the end of @p body. */
 static inline bool
-lv2_atom_tuple_is_end(const void* body, uint32_t size, LV2_Atom* i)
+lv2_atom_tuple_is_end(const void* body, uint32_t size, const LV2_Atom* i)
 {
 	return (const uint8_t*)i >= ((const uint8_t*)body + size);
 }
@@ -169,13 +214,13 @@ lv2_atom_tuple_next(const LV2_Atom* i)
    @endcode
 */
 #define LV2_ATOM_TUPLE_FOREACH(tuple, iter) \
-	for (LV2_Atom* (iter) = lv2_atom_tuple_begin(tuple); \
-	     !lv2_atom_tuple_is_end(LV2_ATOM_BODY(tuple), (tuple)->size, (iter)); \
+	for (const LV2_Atom* (iter) = lv2_atom_tuple_begin(tuple); \
+	     !lv2_atom_tuple_is_end(LV2_ATOM_BODY_CONST(tuple), (tuple)->size, (iter)); \
 	     (iter) = lv2_atom_tuple_next(iter))
 
 /** Like LV2_ATOM_TUPLE_FOREACH but for a headerless tuple body. */
 #define LV2_ATOM_TUPLE_BODY_FOREACH(body, size, iter) \
-	for (LV2_Atom* (iter) = (LV2_Atom*)body; \
+	for (const LV2_Atom* (iter) = (const LV2_Atom*)body; \
 	     !lv2_atom_tuple_is_end(body, size, (iter)); \
 	     (iter) = lv2_atom_tuple_next(iter))
 
@@ -208,8 +253,8 @@ lv2_atom_object_next(const LV2_Atom_Property_Body* i)
 	const LV2_Atom* const value = (const LV2_Atom*)(
 		(const uint8_t*)i + 2 * sizeof(uint32_t));
 	return (const LV2_Atom_Property_Body*)(
-		(const uint8_t*)i + lv2_atom_pad_size(sizeof(LV2_Atom_Property_Body)
-		                                      + value->size));
+		(const uint8_t*)i + lv2_atom_pad_size(
+			(uint32_t)sizeof(LV2_Atom_Property_Body) + value->size));
 }
 
 /**
diff --git a/libs/distrho/src/lv2/atom.h b/libs/distrho/src/lv2/atom.h
index c6c536f..91c4fa3 100644
--- a/libs/distrho/src/lv2/atom.h
+++ b/libs/distrho/src/lv2/atom.h
@@ -189,7 +189,7 @@ typedef struct {
 
 /** The body of an atom:Object. May be cast to LV2_Atom. */
 typedef struct {
-	uint32_t id;     /**< URID (atom:Resource) or blank ID (atom:Blank). */
+	uint32_t id;     /**< URID, or 0 for blank. */
 	uint32_t otype;  /**< Type URID (same as rdf:type, for fast dispatch). */
 	/* Contents (a series of property bodies) follow here. */
 } LV2_Atom_Object_Body;
diff --git a/libs/distrho/src/lv2/event-helpers.h b/libs/distrho/src/lv2/event-helpers.h
index f9965f7..5caaab5 100644
--- a/libs/distrho/src/lv2/event-helpers.h
+++ b/libs/distrho/src/lv2/event-helpers.h
@@ -50,7 +50,7 @@ extern "C" {
 static inline uint16_t
 lv2_event_pad_size(uint16_t size)
 {
-	return (size + 7) & (~7);
+	return (uint16_t)(size + 7U) & (uint16_t)(~7U);
 }
 
 
@@ -60,7 +60,7 @@ lv2_event_pad_size(uint16_t size)
 static inline void
 lv2_event_buffer_reset(LV2_Event_Buffer*  buf,
                        uint16_t           stamp_type,
-                       uint8_t           *data)
+                       uint8_t*           data)
 {
 	buf->data = data;
 	buf->header_size = sizeof(LV2_Event_Buffer);
@@ -130,7 +130,8 @@ lv2_event_increment(LV2_Event_Iterator* 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);
+	iter->offset += lv2_event_pad_size(
+		(uint16_t)((uint16_t)sizeof(LV2_Event) + ev->size));
 
 	return true;
 }
@@ -190,7 +191,7 @@ lv2_event_write(LV2_Event_Iterator* iter,
 	memcpy((uint8_t*)ev + sizeof(LV2_Event), data, size);
 	++iter->buf->event_count;
 
-	size = lv2_event_pad_size(sizeof(LV2_Event) + size);
+	size = lv2_event_pad_size((uint16_t)(sizeof(LV2_Event) + size));
 	iter->buf->size += size;
 	iter->offset    += size;
 
@@ -208,11 +209,12 @@ lv2_event_reserve(LV2_Event_Iterator* iter,
                   uint16_t type,
                   uint16_t size)
 {
-	if (iter->buf->capacity - iter->buf->size < sizeof(LV2_Event) + size)
+	const uint16_t total_size = (uint16_t)(sizeof(LV2_Event) + size);
+	if (iter->buf->capacity - iter->buf->size < total_size)
 		return NULL;
 
-	LV2_Event* const ev = (LV2_Event*)((uint8_t*)iter->buf->data +
-					   iter->offset);
+	LV2_Event* const ev = (LV2_Event*)(
+		(uint8_t*)iter->buf->data + iter->offset);
 
 	ev->frames = frames;
 	ev->subframes = subframes;
@@ -220,9 +222,9 @@ lv2_event_reserve(LV2_Event_Iterator* iter,
 	ev->size = size;
 	++iter->buf->event_count;
 
-	size = lv2_event_pad_size(sizeof(LV2_Event) + size);
-	iter->buf->size += size;
-	iter->offset    += size;
+	const uint16_t padded_size = lv2_event_pad_size(total_size);
+	iter->buf->size += padded_size;
+	iter->offset    += padded_size;
 
 	return (uint8_t*)ev + sizeof(LV2_Event);
 }
@@ -238,19 +240,20 @@ 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)
+	const uint16_t total_size = (uint16_t)(sizeof(LV2_Event) + ev->size);
+	if (iter->buf->capacity - iter->buf->size < total_size)
 		return false;
 
 	LV2_Event* const write_ev = (LV2_Event*)(
-			(uint8_t*)iter->buf->data + iter->offset);
+		(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;
+	const uint16_t padded_size = lv2_event_pad_size(total_size);
+	iter->buf->size += padded_size;
+	iter->offset    += padded_size;
 
 	return true;
 }
diff --git a/libs/distrho/src/lv2/logger.h b/libs/distrho/src/lv2/logger.h
index fd41b59..9143544 100644
--- a/libs/distrho/src/lv2/logger.h
+++ b/libs/distrho/src/lv2/logger.h
@@ -1,5 +1,5 @@
 /*
-  Copyright 2012 David Robillard <http://drobilla.net>
+  Copyright 2012-2013 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
@@ -28,6 +28,7 @@
 #define LV2_ATOM_LOGGER_H
 
 #include <stdio.h>
+#include <string.h>
 
 #include "log.h"
 
diff --git a/libs/distrho/src/lv2/lv2-midifunctions.h b/libs/distrho/src/lv2/lv2-midifunctions.h
index 2803af9..d068f49 100644
--- a/libs/distrho/src/lv2/lv2-midifunctions.h
+++ b/libs/distrho/src/lv2/lv2-midifunctions.h
@@ -50,7 +50,7 @@ inline double lv2midi_get_event(LV2_MIDIState* state,
   }
   
   *timestamp = *(double*)(state->midi->data + state->position);
-  *size = *(size_t*)(state->midi->data + state->position + sizeof(double));
+  *size = (uint32_t)*(size_t*)(state->midi->data + state->position + sizeof(double));
   *data = state->midi->data + state->position + 
     sizeof(double) + sizeof(size_t);
   return *timestamp;
@@ -64,10 +64,10 @@ inline double lv2midi_step(LV2_MIDIState* state) {
     return state->frame_count;
   }
   
-  state->position += sizeof(double);
+  state->position += (uint32_t)sizeof(double);
   size_t size = *(size_t*)(state->midi->data + state->position);
-  state->position += sizeof(size_t);
-  state->position += size;
+  state->position += (uint32_t)sizeof(size_t);
+  state->position += (uint32_t)size;
   return *(double*)(state->midi->data + state->position);
 }
 
@@ -80,9 +80,9 @@ inline void lv2midi_put_event(LV2_MIDIState* state,
   if (state->midi->size + sizeof(double) + sizeof(size_t) + size < state->midi->capacity)
   {
     *((double*)(state->midi->data + state->midi->size)) = timestamp;
-    state->midi->size += sizeof(double);
+    state->midi->size += (uint32_t)sizeof(double);
     *((size_t*)(state->midi->data + state->midi->size)) = size;
-    state->midi->size += sizeof(size_t);
+    state->midi->size += (uint32_t)sizeof(size_t);
     memcpy(state->midi->data + state->midi->size, data, size);
 
     state->midi->size += size;
diff --git a/libs/distrho/src/lv2/lv2.h b/libs/distrho/src/lv2/lv2.h
index fb4df4d..220fbb0 100644
--- a/libs/distrho/src/lv2/lv2.h
+++ b/libs/distrho/src/lv2/lv2.h
@@ -21,7 +21,7 @@
 /**
    @file lv2.h
    API for the LV2 specification <http://lv2plug.in/ns/lv2core>.
-   Revision: 6.5
+   Revision: 12.0
 */
 
 #ifndef LV2_H_INCLUDED
@@ -109,6 +109,7 @@
 #define LV2_CORE__port               LV2_CORE_PREFIX "port"
 #define LV2_CORE__portProperty       LV2_CORE_PREFIX "portProperty"
 #define LV2_CORE__project            LV2_CORE_PREFIX "project"
+#define LV2_CORE__prototype          LV2_CORE_PREFIX "prototype"
 #define LV2_CORE__reportsLatency     LV2_CORE_PREFIX "reportsLatency"
 #define LV2_CORE__requiredFeature    LV2_CORE_PREFIX "requiredFeature"
 #define LV2_CORE__sampleRate         LV2_CORE_PREFIX "sampleRate"
diff --git a/libs/distrho/src/lv2/lv2_external_ui.h b/libs/distrho/src/lv2/lv2_external_ui.h
index 331c812..789cd3f 100755
--- a/libs/distrho/src/lv2/lv2_external_ui.h
+++ b/libs/distrho/src/lv2/lv2_external_ui.h
@@ -73,17 +73,19 @@ typedef struct _LV2_External_UI_Widget {
  */
 typedef struct _LV2_External_UI_Host {
   /**
-   * Callback that plugin UI will call
-   * when UI (GUI window) is closed by user.
+   * Callback that plugin UI will call when UI (GUI window) is closed by user.
    * This callback will be called during execution of LV2_External_UI_Widget::run()
    * (i.e. not from background thread).
    *
-   * After this callback is called, UI is defunct. Host must call
-   * LV2UI_Descriptor::cleanup(). If host wants to make the UI visible
-   * again UI must be reinstantiated.
+   * After this callback is called, UI is defunct. Host must call LV2UI_Descriptor::cleanup().
+   * If host wants to make the UI visible again, the UI must be reinstantiated.
+   *
+   * @note When using the depreated URI LV2_EXTERNAL_UI_DEPRECATED_URI,
+   *       some hosts will not call LV2UI_Descriptor::cleanup() as they should,
+   *       and may call show() again without re-initialization.
    *
    * @param controller Host context associated with plugin UI, as
-   * supplied to LV2UI_Descriptor::instantiate()
+   *                   supplied to LV2UI_Descriptor::instantiate().
    */
   void (*ui_closed)(LV2UI_Controller controller);
 
diff --git a/libs/distrho/src/lv2/lv2_rtmempool.h b/libs/distrho/src/lv2/lv2_rtmempool.h
index 5a06644..7988886 100644
--- a/libs/distrho/src/lv2/lv2_rtmempool.h
+++ b/libs/distrho/src/lv2/lv2_rtmempool.h
@@ -27,6 +27,9 @@
 /** max size of memory pool name, in chars, including terminating zero char */
 #define LV2_RTSAFE_MEMORY_POOL_NAME_MAX 128
 
+/** This extension used to be defined by a different URI */
+#define LV2_RTSAFE_MEMORY_POOL_DEPRECATED_URI "http://home.gna.org/lv2dynparam/rtmempool/v1"
+
 #ifdef __cplusplus
 extern "C" {
 #else
@@ -98,6 +101,17 @@ typedef struct _LV2_RtMemPool_Pool {
 
 } LV2_RtMemPool_Pool;
 
+/**
+ * Deprecated feature for backwards compatibility.
+ */
+typedef struct _LV2_RtMemPool_Pool_Deprecated {
+  unsigned char (*create)(const char*,size_t,size_t,size_t,LV2_RtMemPool_Handle*);
+  void  (*destroy)(LV2_RtMemPool_Handle);
+  void* (*allocate_atomic)(LV2_RtMemPool_Handle);
+  void* (*allocate_sleepy)(LV2_RtMemPool_Handle);
+  void  (*deallocate)(LV2_RtMemPool_Handle,void*);
+} LV2_RtMemPool_Pool_Deprecated;
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/libs/distrho/src/lv2/morph.h b/libs/distrho/src/lv2/morph.h
index 6739d39..df888df 100644
--- a/libs/distrho/src/lv2/morph.h
+++ b/libs/distrho/src/lv2/morph.h
@@ -19,8 +19,8 @@
 
 #include <stdint.h>
 
-#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
-#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+#include "lv2.h"
+#include "urid.h"
 
 #define LV2_MORPH_URI    "http://lv2plug.in/ns/ext/morph"
 #define LV2_MORPH_PREFIX LV2_MORPH_URI "#"
diff --git a/libs/distrho/src/lv2/patch.h b/libs/distrho/src/lv2/patch.h
index 1a7a893..3224264 100644
--- a/libs/distrho/src/lv2/patch.h
+++ b/libs/distrho/src/lv2/patch.h
@@ -28,28 +28,29 @@
 #define LV2_PATCH_URI    "http://lv2plug.in/ns/ext/patch"
 #define LV2_PATCH_PREFIX LV2_PATCH_URI "#"
 
-#define LV2_PATCH__Ack         LV2_PATCH_PREFIX "Ack"
-#define LV2_PATCH__Delete      LV2_PATCH_PREFIX "Delete"
-#define LV2_PATCH__Error       LV2_PATCH_PREFIX "Error"
-#define LV2_PATCH__Get         LV2_PATCH_PREFIX "Get"
-#define LV2_PATCH__Message     LV2_PATCH_PREFIX "Message"
-#define LV2_PATCH__Move        LV2_PATCH_PREFIX "Move"
-#define LV2_PATCH__Patch       LV2_PATCH_PREFIX "Patch"
-#define LV2_PATCH__Post        LV2_PATCH_PREFIX "Post"
-#define LV2_PATCH__Put         LV2_PATCH_PREFIX "Put"
-#define LV2_PATCH__Request     LV2_PATCH_PREFIX "Request"
-#define LV2_PATCH__Response    LV2_PATCH_PREFIX "Response"
-#define LV2_PATCH__Set         LV2_PATCH_PREFIX "Set"
-#define LV2_PATCH__add         LV2_PATCH_PREFIX "add"
-#define LV2_PATCH__body        LV2_PATCH_PREFIX "body"
-#define LV2_PATCH__destination LV2_PATCH_PREFIX "destination"
-#define LV2_PATCH__property    LV2_PATCH_PREFIX "property"
-#define LV2_PATCH__readable    LV2_PATCH_PREFIX "readable"
-#define LV2_PATCH__remove      LV2_PATCH_PREFIX "remove"
-#define LV2_PATCH__request     LV2_PATCH_PREFIX "request"
-#define LV2_PATCH__subject     LV2_PATCH_PREFIX "subject"
-#define LV2_PATCH__value       LV2_PATCH_PREFIX "value"
-#define LV2_PATCH__wildcard    LV2_PATCH_PREFIX "wildcard"
-#define LV2_PATCH__writable    LV2_PATCH_PREFIX "writable"
+#define LV2_PATCH__Ack            LV2_PATCH_PREFIX "Ack"
+#define LV2_PATCH__Delete         LV2_PATCH_PREFIX "Delete"
+#define LV2_PATCH__Error          LV2_PATCH_PREFIX "Error"
+#define LV2_PATCH__Get            LV2_PATCH_PREFIX "Get"
+#define LV2_PATCH__Message        LV2_PATCH_PREFIX "Message"
+#define LV2_PATCH__Move           LV2_PATCH_PREFIX "Move"
+#define LV2_PATCH__Patch          LV2_PATCH_PREFIX "Patch"
+#define LV2_PATCH__Post           LV2_PATCH_PREFIX "Post"
+#define LV2_PATCH__Put            LV2_PATCH_PREFIX "Put"
+#define LV2_PATCH__Request        LV2_PATCH_PREFIX "Request"
+#define LV2_PATCH__Response       LV2_PATCH_PREFIX "Response"
+#define LV2_PATCH__Set            LV2_PATCH_PREFIX "Set"
+#define LV2_PATCH__add            LV2_PATCH_PREFIX "add"
+#define LV2_PATCH__body           LV2_PATCH_PREFIX "body"
+#define LV2_PATCH__destination    LV2_PATCH_PREFIX "destination"
+#define LV2_PATCH__property       LV2_PATCH_PREFIX "property"
+#define LV2_PATCH__readable       LV2_PATCH_PREFIX "readable"
+#define LV2_PATCH__remove         LV2_PATCH_PREFIX "remove"
+#define LV2_PATCH__request        LV2_PATCH_PREFIX "request"
+#define LV2_PATCH__subject        LV2_PATCH_PREFIX "subject"
+#define LV2_PATCH__sequenceNumber LV2_PATCH_PREFIX "sequenceNumber"
+#define LV2_PATCH__value          LV2_PATCH_PREFIX "value"
+#define LV2_PATCH__wildcard       LV2_PATCH_PREFIX "wildcard"
+#define LV2_PATCH__writable       LV2_PATCH_PREFIX "writable"
 
 #endif  /* LV2_PATCH_H */
diff --git a/libs/distrho/src/lv2/ui.h b/libs/distrho/src/lv2/ui.h
index 28d9194..e2418d3 100644
--- a/libs/distrho/src/lv2/ui.h
+++ b/libs/distrho/src/lv2/ui.h
@@ -1,6 +1,6 @@
 /*
   LV2 UI Extension
-  Copyright 2009-2012 David Robillard <d@drobilla.net>
+  Copyright 2009-2013 David Robillard <d@drobilla.net>
   Copyright 2006-2011 Lars Luthman <lars.luthman@gmail.com>
 
   Permission to use, copy, modify, and/or distribute this software for any
@@ -51,8 +51,10 @@
 #define LV2_UI__portNotification LV2_UI_PREFIX "portNotification"
 #define LV2_UI__portSubscribe    LV2_UI_PREFIX "portSubscribe"
 #define LV2_UI__resize           LV2_UI_PREFIX "resize"
+#define LV2_UI__showInterface    LV2_UI_PREFIX "showInterface"
 #define LV2_UI__touch            LV2_UI_PREFIX "touch"
 #define LV2_UI__ui               LV2_UI_PREFIX "ui"
+#define LV2_UI__updateRate       LV2_UI_PREFIX "updateRate"
 
 /**
    The index returned by LV2_UI_Port_Port::port_index() for unknown ports.
@@ -260,7 +262,7 @@ typedef struct _LV2UI_Port_Map {
 	/**
 	   Get the index for the port with the given @p symbol.
 
-	   @return The index of the port, or LV2_UI_INVALID_PORT_INDEX if no such
+	   @return The index of the port, or LV2UI_INVALID_PORT_INDEX if no such
 	   port is found.
 	*/
 	uint32_t (*port_index)(LV2UI_Feature_Handle handle, const char* symbol);
@@ -339,7 +341,7 @@ typedef struct _LV2UI_Touch {
 } LV2UI_Touch;
 
 /**
-   UI Idle Feature (LV2_UI__idle)
+   UI Idle Feature (LV2_UI__idleInterface)
 
    This feature is an addition to the UI API that provides a callback for the
    host to call rapidly, e.g. to drive the idle callback of a toolkit.
@@ -357,6 +359,31 @@ typedef struct _LV2UI_Idle_Interface {
 } LV2UI_Idle_Interface;
 
 /**
+   UI Show Interface (LV2_UI__showInterface)
+
+   UIs can use this interface to provide show/hide methods to pop up a window,
+   which allows them to function in hosts unable to embed their widget type.
+
+   If used, LV2UI_Idle_Interface should also be used to drive the UI.  The UI
+   should return non-zero from idle() when the window has been closed.
+*/
+typedef struct _LV2UI_Show_Interface {
+	/**
+	   Show a window for this UI.
+
+	   @return 0 on success, or anything else to stop being called.
+	*/
+	int (*show)(LV2UI_Handle ui);
+
+	/**
+	   Hide the window for this UI.
+
+	   @return 0 on success, or anything else to stop being called.
+	*/
+	int (*hide)(LV2UI_Handle ui);
+} LV2UI_Show_Interface;
+
+/**
    Peak data for a slice of time, the update format for ui:peakProtocol.
 */
 typedef struct _LV2UI_Peak_Data {
diff --git a/libs/distrho/src/lv2/uri-map.h b/libs/distrho/src/lv2/uri-map.h
index 2fedc42..2062af3 100644
--- a/libs/distrho/src/lv2/uri-map.h
+++ b/libs/distrho/src/lv2/uri-map.h
@@ -92,7 +92,7 @@ typedef struct {
 } LV2_URI_Map_Feature;
 
 #ifdef __cplusplus
-} /* extern "C" */
+}  /* extern "C" */
 #endif
 
 #endif /* LV2_URI_MAP_H */
diff --git a/libs/distrho/src/lv2/urid.h b/libs/distrho/src/lv2/urid.h
index e3466fb..c317f7f 100644
--- a/libs/distrho/src/lv2/urid.h
+++ b/libs/distrho/src/lv2/urid.h
@@ -123,7 +123,7 @@ typedef struct _LV2_URID_Unmap {
 } LV2_URID_Unmap;
 
 #ifdef __cplusplus
-} /* extern "C" */
+}  /* extern "C" */
 #endif
 
 #endif /* LV2_URID_H */
diff --git a/libs/distrho/src/lv2/worker.h b/libs/distrho/src/lv2/worker.h
index b0edbe8..fc09d55 100644
--- a/libs/distrho/src/lv2/worker.h
+++ b/libs/distrho/src/lv2/worker.h
@@ -152,7 +152,7 @@ typedef struct _LV2_Worker_Schedule {
 } LV2_Worker_Schedule;
 
 #ifdef __cplusplus
-} /* extern "C" */
+}  /* extern "C" */
 #endif
 
 #endif  /* LV2_WORKER_H */
diff --git a/plugins/Makefile.mk b/plugins/Makefile.mk
index e4398b3..489b58f 100644
--- a/plugins/Makefile.mk
+++ b/plugins/Makefile.mk
@@ -20,7 +20,7 @@ BUILD_CXX_FLAGS += -I. -I../../libs/distrho -I../../libs/dgl
 # Enable all plugin types
 
 #all: ladspa lv2 dssi vst
-all: vst
+all: lv2
 
 # --------------------------------------------------------------
 # Set plugin binary file targets