Added Om aka Graph aka god knows what

git-svn-id: http://svn.drobilla.net/lad/grauph@9 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 66 insertions, 0 deletions

diff --git a/src/engine/Connection.h b/src/engine/Connection.h
new file mode 100644
index 00000000..769c2047
--- /dev/null
+++ b/src/engine/Connection.h
@@ -0,0 +1,66 @@
+/* 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 CONNECTION_H
+#define CONNECTION_H
+
+#include <cstdlib>
+#include "MaidObject.h"
+#include "util/types.h"
+
+namespace Om {
+
+class Port;
+
+
+/** Represents a single inbound connection for an InputPort.
+ *
+ * This can be a group of ports (ie coming from a polyphonic Node) or
+ * a single Port.  This class exists basically as an abstraction of mixing
+ * down polyphonic inputs, so InputPort can just deal with mixing down
+ * multiple connections (oblivious to the polyphonic situation of the
+ * connection itself).
+ *
+ * \ingroup engine
+ */
+class Connection : public MaidObject
+{
+public:
+	virtual ~Connection() {}
+	
+	Port* src_port() const { return m_src_port; }
+	Port* dst_port() const { return m_dst_port; }
+
+	/** Used by some (recursive) events to prevent double disconnections */
+	bool pending_disconnection()       { return m_pending_disconnection; }
+	void pending_disconnection(bool b) { m_pending_disconnection = b; }
+	
+protected:
+	// Disallow copies (undefined)
+	Connection(const Connection&);
+
+	Connection(Port* const src_port, Port* const dst_port);
+	
+	Port* const m_src_port;
+	Port* const m_dst_port;
+	bool        m_is_poly_to_mono;
+	bool        m_pending_disconnection;
+};
+
+
+} // namespace Om
+
+#endif // CONNECTION_H