Added shared abstract interface for ports.

Moved DataType to shared.
Switch data type URIs to match LV2 type semantics (e.g. separate audio/control types).


git-svn-id: http://svn.drobilla.net/lad/ingen@840 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 86 insertions, 0 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