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diff --git a/src/libs/client/DirectSigClientInterface.h b/src/libs/client/DirectSigClientInterface.h
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+++ b/src/libs/client/DirectSigClientInterface.h
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+/* This file is part of Om. Copyright (C) 2006 Dave Robillard.
+ * 
+ * Om 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.
+ * 
+ * Om 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 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef DIRECTSIGCLIENTINTERFACE_H
+#define DIRECTSIGCLIENTINTERFACE_H
+
+#include <inttypes.h>
+#include <string>
+#include <sigc++/sigc++.h>
+#include "SigClientInterface.h"
+using std::string;
+
+namespace LibOmClient {
+
+
+/** A direct (nonthreaded) LibSigC++ signal emitting interface for clients to use.
+ * 
+ * The signals from SigClientInterface will be emitted in the same thread as the
+ * ClientInterface functions are called.  <b>You can not set this directly as an
+ * in-engine client interface and connect the signals to GTK</b>.
+ *
+ * For maximum performance of a monolithic single-client GUI app, it would be
+ * nice if the post processing thread in the engine could actually be the GTK
+ * thread, then you could use this directly and minimize queueing of events and
+ * thread/scheduling overhead.
+ *
+ * sed would have the copyright to this code if it was a legal person.
+ */
+class DirectSigClientInterface : virtual public SigClientInterface
+{
+public:
+	DirectSigClientInterface();
+
+private:
+
+	// ClientInterface function implementations to drive SigClientInterface signals
+	
+	virtual void bundle_begin()
+	{ emit_bundle_begin(); }
+
+	virtual void bundle_end()
+	{ emit_bundle_end(); }
+
+	virtual void error(const string& msg)
+	{ emit_error(msg); }
+	
+	virtual void num_plugins(uint32_t num)
+	{ emit_num_plugins(num); }
+
+	virtual void new_plugin(const string& type, const string& uri, const string& name)
+	{ emit_new_plugin(type, uri, name); }
+	
+	virtual void new_patch(const string& path, uint32_t poly)
+	{ emit_new_patch(path, poly); }
+	
+	virtual void new_node(const string& plugin_type, const string& plugin_uri, const string& node_path, bool is_polyphonic, uint32_t num_ports)
+	{ emit_new_node(plugin_type, plugin_uri, node_path, is_polyphonic, num_ports); }
+	
+	virtual void new_port(const string& path, const string& data_type, bool is_output)
+	{ emit_new_port(path, data_type, is_output); }
+	
+	virtual void patch_enabled(const string& path)
+	{ emit_patch_enabled(path); }
+	
+	virtual void patch_disabled(const string& path)
+	{ emit_patch_disabled(path); }
+	
+	virtual void patch_cleared(const string& path)
+	{ emit_patch_cleared(path); }
+	
+	virtual void object_renamed(const string& old_path, const string& new_path)
+	{ emit_object_renamed(old_path, new_path); }
+	
+	virtual void object_destroyed(const string& path)
+	{ emit_object_destroyed(path); }
+	
+	virtual void connection(const string& src_port_path, const string& dst_port_path)
+	{ emit_connection(src_port_path, dst_port_path); }
+	
+	virtual void disconnection(const string& src_port_path, const string& dst_port_path)
+	{ emit_disconnection(src_port_path, dst_port_path); }
+	
+	virtual void metadata_update(const string& subject_path, const string& predicate, const string& value)
+	{ emit_metadata_update(subject_path, predicate, value); }
+	
+	virtual void control_change(const string& port_path, float value)
+	{ emit_control_change(port_path, value); }
+	
+	virtual void program_add(const string& node_path, uint32_t bank, uint32_t program, const string& program_name)
+	{ emit_program_add(node_path, bank, program, program_name); }
+	
+	virtual void program_remove(const string& node_path, uint32_t bank, uint32_t program)
+	{ emit_program_remove(node_path, bank, program); }
+};
+
+
+} // namespace LibOmClient
+
+#endif