Embedded LV2 GTK GUI support.

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

10 files changed, 262 insertions, 9 deletions

diff --git a/SConstruct b/SConstruct
index 169742e7a8..634e3373ac 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1072,9 +1072,9 @@ if env['SYSLIBS']:
 
 #    libraries['flowcanvas'] = LibraryInfo(LIBS='flowcanvas', LIBPATH='#/libs/flowcanvas', CPPPATH='#libs/flowcanvas')
     libraries['soundtouch'] = LibraryInfo()
-    #libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs soundtouch-1.0')
-    # Comment the previous line and uncomment this for Debian:
-    libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs libSoundTouch')
+    libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs soundtouch-1.0')
+    # Comment the previous line and uncomment this for old versions of Debian:
+    #libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs libSoundTouch')
 
     libraries['appleutility'] = LibraryInfo(LIBS='libappleutility',
                                             LIBPATH='#libs/appleutility',
diff --git a/gtk2_ardour/SConscript b/gtk2_ardour/SConscript
index 8b7bdfe637..1b34f8aead 100644
--- a/gtk2_ardour/SConscript
+++ b/gtk2_ardour/SConscript
@@ -283,8 +283,11 @@ if env['VST']:
 	extra_sources += vst_files
 	gtkardour.Append (CCFLAGS="-DVST_SUPPORT", CPPPATH="#libs/fst")
 
+lv2_files = [ 'lv2_plugin_ui.cc' ]
+
 if env['LV2']:
-	gtkardour.Append (CCFLAGS="-DHAVE_SLV2")
+	extra_sources += lv2_files
+	gtkardour.Append (CCFLAGS="-DHAVE_LV2")
 	gtkardour.Merge ([libraries['slv2']])
 
 
diff --git a/gtk2_ardour/lv2_plugin_ui.cc b/gtk2_ardour/lv2_plugin_ui.cc
new file mode 100644
index 0000000000..7df1dbfe85
--- /dev/null
+++ b/gtk2_ardour/lv2_plugin_ui.cc
@@ -0,0 +1,113 @@
+/*
+    Copyright (C) 2008 Paul Davis 
+    Author: Dave 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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <ardour/insert.h>
+#include <ardour/lv2_plugin.h>
+
+#include "lv2_plugin_ui.h"
+
+using namespace Gtk;
+using namespace ARDOUR;
+using namespace PBD;
+
+void
+LV2PluginUI::lv2_ui_write(LV2UI_Controller controller,
+             uint32_t         port_index,
+             uint32_t         buffer_size,
+             uint32_t         format,
+             const void*      buffer)
+{
+	LV2PluginUI* me = (LV2PluginUI*)controller;
+	if (*(float*)buffer != me->_values[port_index])
+		me->_lv2->set_parameter(port_index, *(float*)buffer);
+}
+
+void
+LV2PluginUI::parameter_changed (uint32_t port_index, float val)
+{
+	if (val != _values[port_index]) {
+		const LV2UI_Descriptor* ui_desc = slv2_ui_instance_get_descriptor(_inst);
+		LV2UI_Handle ui_handle = slv2_ui_instance_get_handle(_inst);
+		if (ui_desc->port_event)
+			ui_desc->port_event(ui_handle, port_index, 4, 0, &val);
+		_values[port_index] = val;
+	}
+}
+
+LV2PluginUI::LV2PluginUI (boost::shared_ptr<PluginInsert> pi, boost::shared_ptr<LV2Plugin> lv2p)
+	: PlugUIBase (pi)
+	, _lv2(lv2p)
+{
+	_inst = slv2_ui_instantiate(
+			_lv2->slv2_plugin(), _lv2->slv2_ui(), LV2PluginUI::lv2_ui_write, this,
+			/* FEATURES */ NULL);
+			
+	GtkWidget* c_widget = (GtkWidget*)slv2_ui_instance_get_widget(_inst);
+	_gui_widget = Glib::wrap(c_widget);
+	_gui_widget->show_all();
+	pack_start(*_gui_widget, true, true);
+	
+	uint32_t num_ports = slv2_plugin_get_num_ports(lv2p->slv2_plugin());
+	_values = new float[num_ports];
+	for (uint32_t i = 0; i < num_ports; ++i) {
+		bool ok;
+		_values[i] = lv2p->nth_parameter(i, ok);
+		if (ok)
+			lv2_ui_write(this, i, 4, /* FIXME: format */0, &_values[i]);
+	}
+		
+	_lv2->ParameterChanged.connect(mem_fun(*this, &LV2PluginUI::parameter_changed));
+}
+
+LV2PluginUI::~LV2PluginUI ()
+{
+	delete[] _values;
+	// plugin destructor destroys the GUI
+}
+
+int
+LV2PluginUI::get_preferred_height ()
+{
+	Gtk::Requisition r = size_request();
+	return r.height;
+}
+
+int
+LV2PluginUI::get_preferred_width ()
+{
+	Gtk::Requisition r = size_request();
+	return r.width;
+}
+
+int
+LV2PluginUI::package (Gtk::Window& win)
+{
+	/* forward configure events to plugin window */
+	win.signal_configure_event().connect (mem_fun (*this, &LV2PluginUI::configure_handler));
+	return 0;
+}
+
+bool
+LV2PluginUI::configure_handler (GdkEventConfigure* ev)
+{
+	cout << "CONFIGURE" << endl;
+	return false;
+}
+
diff --git a/gtk2_ardour/lv2_plugin_ui.h b/gtk2_ardour/lv2_plugin_ui.h
new file mode 100644
index 0000000000..5946d8bd77
--- /dev/null
+++ b/gtk2_ardour/lv2_plugin_ui.h
@@ -0,0 +1,76 @@
+/*
+    Copyright (C) 2008 Paul Davis
+    Author: Dave 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 2 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_lv2_plugin_ui_h__
+#define __ardour_lv2_plugin_ui_h__
+
+#include <vector>
+#include <map>
+#include <list>
+
+#include <sigc++/signal.h>
+#include <gtkmm/widget.h>
+
+#include <ardour_dialog.h>
+#include <ardour/types.h>
+#include "plugin_ui.h"
+
+#ifdef HAVE_LV2
+
+namespace ARDOUR {
+	class PluginInsert;
+	class LV2Plugin;
+}
+
+class LV2PluginUI : public PlugUIBase, public Gtk::VBox
+{
+  public:
+	LV2PluginUI (boost::shared_ptr<ARDOUR::PluginInsert>, boost::shared_ptr<ARDOUR::LV2Plugin>);
+	~LV2PluginUI ();
+
+	gint get_preferred_height ();
+	gint get_preferred_width ();
+	bool start_updating(GdkEventAny*) {return false;}
+	bool stop_updating(GdkEventAny*) {return false;}
+
+	int package (Gtk::Window&);
+
+  private:
+	boost::shared_ptr<ARDOUR::LV2Plugin> _lv2;
+	
+	Gtk::Widget*   _gui_widget;
+	SLV2UIInstance _inst;
+	float*         _values;
+	
+	static void lv2_ui_write(
+			LV2UI_Controller controller,
+			uint32_t         port_index,
+			uint32_t         buffer_size,
+			uint32_t         format,
+			const void*      buffer);
+	
+	void parameter_changed(uint32_t, float);
+	bool configure_handler (GdkEventConfigure*);
+	void save_plugin_setting ();
+};
+#endif // HAVE_LV2
+
+#endif /* __ardour_lv2_plugin_ui_h__ */
+
diff --git a/gtk2_ardour/plugin_selector.cc b/gtk2_ardour/plugin_selector.cc
index 0435e1e95f..67a78645e0 100644
--- a/gtk2_ardour/plugin_selector.cc
+++ b/gtk2_ardour/plugin_selector.cc
@@ -306,7 +306,7 @@ PluginSelector::ladspa_refiller (const std::string& filterstr)
 void
 PluginSelector::lv2_refiller (const std::string& filterstr)
 {
-#ifdef HAVE_SLV2
+#ifdef HAVE_LV2
 	refiller (manager->lv2_plugin_info(), filterstr, "LV2");
 #endif
 }
@@ -512,7 +512,7 @@ PluginSelector::plugin_menu()
 #ifdef HAVE_AUDIOUNITS
 	all_plugs.insert (all_plugs.end(), manager->au_plugin_info().begin(), manager->au_plugin_info().end());
 #endif
-#ifdef HAVE_SLV2
+#ifdef HAVE_LV2
 	all_plugs.insert (all_plugs.end(), manager->lv2_plugin_info().begin(), manager->lv2_plugin_info().end());
 #endif
 
diff --git a/gtk2_ardour/plugin_ui.cc b/gtk2_ardour/plugin_ui.cc
index 7d000d3a45..4918523af3 100644
--- a/gtk2_ardour/plugin_ui.cc
+++ b/gtk2_ardour/plugin_ui.cc
@@ -42,6 +42,10 @@
 #ifdef VST_SUPPORT
 #include <ardour/vst_plugin.h>
 #endif
+#ifdef HAVE_LV2
+#include <ardour/lv2_plugin.h>
+#include "lv2_plugin_ui.h"
+#endif
 
 #include <lrdf.h>
 
@@ -83,6 +87,10 @@ PluginUIWindow::PluginUIWindow (Gtk::Window* win, boost::shared_ptr<PluginInsert
 			error << _("Eh? LADSPA plugins don't have editors!") << endmsg;
 			break;
 
+		case ARDOUR::LV2:
+			have_gui = create_lv2_editor (insert);
+			break;
+
 		default:
 #ifndef VST_SUPPORT
 			error << _("unknown type of editor-supplying plugin (note: no VST support in this version of ardour)")
@@ -248,6 +256,30 @@ PluginUIWindow::app_activated (bool yn)
 }
 
 bool
+PluginUIWindow::create_lv2_editor(boost::shared_ptr<PluginInsert> insert)
+{
+#ifndef HAVE_LV2
+	return false;
+#else
+
+	boost::shared_ptr<LV2Plugin> vp;
+	
+	if ((vp = boost::dynamic_pointer_cast<LV2Plugin> (insert->plugin())) == 0) {
+		error << _("create_lv2_editor called on non-LV2 plugin") << endmsg;
+		throw failed_constructor ();
+	} else {
+		LV2PluginUI* lpu = new LV2PluginUI (insert, vp);
+		_pluginui = lpu;
+		add (*lpu);
+		lpu->package (*this);
+	}
+
+	non_gtk_gui = false;
+	return true;
+#endif
+}
+
+bool
 PluginUIWindow::on_key_press_event (GdkEventKey* event)
 {
 	if (non_gtk_gui) {
diff --git a/gtk2_ardour/plugin_ui.h b/gtk2_ardour/plugin_ui.h
index b23b747639..4f0d92c21c 100644
--- a/gtk2_ardour/plugin_ui.h
+++ b/gtk2_ardour/plugin_ui.h
@@ -231,6 +231,7 @@ class PluginUIWindow : public Gtk::Window
 
 	bool create_vst_editor (boost::shared_ptr<ARDOUR::PluginInsert>);
 	bool create_audiounit_editor (boost::shared_ptr<ARDOUR::PluginInsert>);
+	bool create_lv2_editor (boost::shared_ptr<ARDOUR::PluginInsert>);
 };
 
 #ifdef VST_SUPPORT
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()