Embedded LV2 GTK GUI support.

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3678 d708f5d6-7413-0410-9779-e7cbd77b26cf

3 files changed, 31 insertions, 3 deletions

diff --git a/libs/ardour/ardour/lv2_plugin.h b/libs/ardour/ardour/lv2_plugin.h
index 852d277bfc..8d58c7024d 100644
--- a/libs/ardour/ardour/lv2_plugin.h
+++ b/libs/ardour/ardour/lv2_plugin.h
@@ -61,6 +61,7 @@ class LV2Plugin : public ARDOUR::Plugin
 	uint32_t    nth_parameter (uint32_t port, bool& ok) const;
 
 	SLV2Plugin slv2_plugin()         { return _plugin; }
+	SLV2UI     slv2_ui()             { return _ui; }
 	SLV2Port   slv2_port(uint32_t i) { return slv2_plugin_get_port_by_index(_plugin, i); }
 	
 	std::set<uint32_t> automatable() const;
@@ -103,14 +104,13 @@ class LV2Plugin : public ARDOUR::Plugin
 	int      set_state(const XMLNode& node);
 	bool     save_preset(std::string name);
 
-	bool has_editor() const { return false; }
+	bool has_editor() const;
 
-	int require_output_streams (uint32_t);
-	
   private:
 	void*                    _module;
 	LV2World&                _world;
 	SLV2Plugin               _plugin;
+	SLV2UI                   _ui;
 	SLV2Value                _name;
 	SLV2Value                _author;
 	SLV2Instance             _instance;
@@ -146,6 +146,7 @@ struct LV2World {
 	SLV2Value integer;
 	SLV2Value toggled;
 	SLV2Value srate;
+	SLV2Value gtk_gui;
 };
 
 
diff --git a/libs/ardour/insert.cc b/libs/ardour/insert.cc
index 75f428aeb4..9af73e9a7d 100644
--- a/libs/ardour/insert.cc
+++ b/libs/ardour/insert.cc
@@ -844,6 +844,9 @@ PluginInsert::type ()
 #ifdef HAVE_AUDIOUNITS
 	boost::shared_ptr<AUPlugin> ap;
 #endif
+#ifdef HAVE_LV2
+	boost::shared_ptr<LV2Plugin> lv2p;
+#endif
 	
 	PluginPtr other = plugin ();
 
@@ -857,7 +860,12 @@ PluginInsert::type ()
 	} else if ((ap = boost::dynamic_pointer_cast<AUPlugin> (other)) != 0) {
 		return ARDOUR::AudioUnit;
 #endif
+#ifdef HAVE_LV2
+	} else if ((lv2p = boost::dynamic_pointer_cast<LV2Plugin> (other)) != 0) {
+		return ARDOUR::LV2;
+#endif
 	} else {
+		error << "Unknown plugin type" << endmsg;
 		/* NOT REACHED */
 		return (ARDOUR::PluginType) 0;
 	}
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 015c47e317..028d0c5b45 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -68,6 +68,7 @@ LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
 {
 	_world = world;
 	_plugin = plugin;
+	_ui = NULL;
 	_control_data = 0;
 	_shadow_data = 0;
 	_latency_control_port = 0;
@@ -124,6 +125,17 @@ LV2Plugin::init (LV2World& world, SLV2Plugin plugin, nframes_t rate)
 			_defaults[i] = 0.0f;
 		}
 	}
+	
+	SLV2UIs uis = slv2_plugin_get_uis(_plugin);
+	if (slv2_uis_size(uis) > 0) {
+		for (unsigned i=0; i < slv2_uis_size(uis); ++i) {
+			SLV2UI ui = slv2_uis_get_at(uis, i);
+			if (slv2_ui_is_a(ui, _world.gtk_gui)) {
+				_ui = ui;
+				break;
+			}
+		}
+	}
 
 	Plugin::setup_controls ();
 
@@ -243,6 +255,12 @@ LV2Plugin::save_preset (string name)
 {
 	return Plugin::save_preset (name, "lv2");
 }
+	
+bool
+LV2Plugin::has_editor() const
+{
+	return (_ui != NULL);
+}
 
 int
 LV2Plugin::set_state(const XMLNode& node)
@@ -505,6 +523,7 @@ LV2World::LV2World()
 	integer = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "integer");
 	toggled = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "toggled");
 	srate = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 "sampleRate");
+	gtk_gui = slv2_value_new_uri(world, "http://lv2plug.in/ns/extensions/ui#GtkUI");
 }
 
 LV2World::~LV2World()