4 files changed, 144 insertions, 6 deletions
diff --git a/src/common/interface/DataType.hpp b/src/common/interface/DataType.hpp
new file mode 100644
index 00000000..a2e3ce5a
--- /dev/null
+++ b/src/common/interface/DataType.hpp
@@ -0,0 +1,86 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef DATATYPE_H
+#define DATATYPE_H
+
+namespace Ingen
+{
+
+
+/** A data type that can be stored in a Port.
+ *
+ * This type refers to the type of the entire buffer, mirroring LV2,
+ * e.g. :AudioPort and :ControlPort both are really 32-bit floating point,
+ * but they are different port types.
+ */
+class DataType {
+public:
+
+	enum Symbol {
+		UNKNOWN = 0,
+		AUDIO   = 1,
+		CONTROL = 2,
+		MIDI    = 3,
+		OSC     = 4
+	};
+
+	DataType(const std::string& uri)
+	: _symbol(UNKNOWN)
+	{
+		if (uri == type_uri(AUDIO)) {
+			_symbol = AUDIO;
+		} else if (uri == type_uri(CONTROL)) {
+			_symbol = CONTROL;
+		} else if (uri == type_uri(MIDI)) {
+			_symbol = MIDI;
+		} else if (uri == type_uri(OSC)) {
+			_symbol = OSC;
+		}
+	}
+
+	DataType(Symbol symbol)
+	: _symbol(symbol)
+	{}
+
+	const char*   uri()    const { return type_uri(_symbol); }
+	const Symbol& symbol() const { return _symbol; }
+
+	inline bool operator==(const Symbol& symbol) const { return (_symbol == symbol); }
+	inline bool operator!=(const Symbol& symbol) const { return (_symbol != symbol); }
+	inline bool operator==(const DataType& type) const { return (_symbol == type._symbol); }
+	inline bool operator!=(const DataType& type) const { return (_symbol != type._symbol); }
+
+private:
+	Symbol _symbol;
+
+	static inline const char* type_uri(unsigned symbol_num)  {
+		switch (symbol_num) {
+		case 1:  return "ingen:AudioPort";
+		case 2:  return "ingen:ControlPort";
+		case 3:  return "ingen:MidiPort";
+		case 4:  return "ingen:OSCPort";
+		default: return "";
+		}
+	}
+};
+
+
+
+} // namespace Ingen
+
+#endif // DATATYPE_H
diff --git a/src/common/interface/Makefile.am b/src/common/interface/Makefile.am
index 8460a2fb..8442df77 100644
--- a/src/common/interface/Makefile.am
+++ b/src/common/interface/Makefile.am
@@ -1,4 +1,8 @@
 EXTRA_DIST = \
 	README \
 	ClientInterface.hpp \
-	EngineInterface.hpp
+	EngineInterface.hpp \
+	Plugin.hpp \
+	Node.hpp \
+	Port.hpp \
+	DataType.hpp \
diff --git a/src/common/interface/Node.hpp b/src/common/interface/Node.hpp
index e332688e..26133b11 100644
--- a/src/common/interface/Node.hpp
+++ b/src/common/interface/Node.hpp
@@ -18,15 +18,14 @@
 #ifndef NODE_H
 #define NODE_H
 
-#include <string>
-#include <raul/Array.hpp>
 #include "GraphObject.hpp"
 
-namespace Raul { template <typename T> class List; class Maid; }
-
 namespace Ingen {
 namespace Shared {
 
+class Port;
+class Plugin;
+
 
 /** A Node (or "module") in a Patch (which is also a Node).
  * 
@@ -40,7 +39,9 @@ namespace Shared {
 class Node : public virtual GraphObject
 {
 public:
-	virtual uint32_t num_ports() const = 0;
+	virtual uint32_t      num_ports()          const = 0;
+	virtual Port*         port(uint32_t index) const = 0;
+	virtual const Plugin* plugin()             const = 0;
 };
 
 
diff --git a/src/common/interface/Port.hpp b/src/common/interface/Port.hpp
new file mode 100644
index 00000000..7667b385
--- /dev/null
+++ b/src/common/interface/Port.hpp
@@ -0,0 +1,47 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef PORT_H
+#define PORT_H
+
+#include <raul/Atom.hpp>
+#include "GraphObject.hpp"
+#include "DataType.hpp"
+
+namespace Ingen {
+namespace Shared {
+
+
+/** A Port on a Node.
+ *
+ * Purely virtual (except for the destructor).
+ * 
+ * \ingroup interface
+ */
+class Port : public virtual GraphObject
+{
+public:
+	virtual bool       is_input() const = 0;
+	virtual DataType   type()     const = 0;
+	virtual Raul::Atom value()    const = 0;
+};
+
+
+} // namespace Shared
+} // namespace Ingen
+
+#endif // PORT_H