rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/surfaces/generic_midi/interface.cc

@@ -0,0 +1,58 @@
+#include <pbd/failed_constructor.h>
+
+#include <control_protocol/control_protocol.h>
+#include "generic_midi_control_protocol.h"
+
+using namespace ARDOUR;
+
+ControlProtocol*
+new_generic_midi_protocol (ControlProtocolDescriptor* descriptor, Session* s)
+{
+	GenericMidiControlProtocol* gmcp;
+		
+	try {
+		gmcp =  new GenericMidiControlProtocol (*s);
+	} catch (failed_constructor& err) {
+		return 0;
+	}
+	
+	if (gmcp->set_active (true)) {
+		delete gmcp;
+		return 0;
+	}
+
+	return gmcp;
+}
+
+void
+delete_generic_midi_protocol (ControlProtocolDescriptor* descriptor, ControlProtocol* cp)
+{
+	delete cp;
+}
+
+bool
+probe_generic_midi_protocol (ControlProtocolDescriptor* descriptor)
+{
+	return GenericMidiControlProtocol::probe ();
+}
+
+static ControlProtocolDescriptor generic_midi_descriptor = {
+	name : "Generic MIDI",
+	id : "uri://ardour.org/surfaces/generic_midi:0",
+	ptr : 0,
+	module : 0,
+	mandatory : 0,
+	supports_feedback : true,
+	probe : probe_generic_midi_protocol,
+	initialize : new_generic_midi_protocol,
+	destroy : delete_generic_midi_protocol
+};
+	
+
+extern "C" {
+ControlProtocolDescriptor* 
+protocol_descriptor () {
+	return &generic_midi_descriptor;
+}
+}
+