1 files changed, 87 insertions, 0 deletions
diff --git a/src/libs/engine/PortBase.h b/src/libs/engine/PortBase.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 PORTBASE_H
+#define PORTBASE_H
+
+#include <string>
+#include "util/types.h"
+#include "Array.h"
+#include "Port.h"
+#include "Buffer.h"
+
+using std::string;
+
+namespace Om {
+	
+class MidiMessage;
+class Node;
+
+
+/** A port (with a type).
+ *
+ * This is basically just a buffer and a bunch of flags and helper methods.
+ * All the interesting functionality of ports is in InputPort.
+ *
+ * \ingroup engine
+ */
+template <typename T>
+class PortBase : public Port
+{
+public:
+	virtual ~PortBase();
+
+	void set_value(size_t voice, T val, size_t offset);
+	void set_value(T val, size_t offset);
+	
+	Buffer<T>* buffer(size_t voice) const { return m_buffers.at(voice); }
+	
+	virtual void prepare_buffers(size_t nframes);
+	virtual void clear_buffers();
+	
+	PortBase* tied_port() const { return m_tied_port; }
+	void      untie()           { m_is_tied = false; m_tied_port = NULL; } 
+
+	size_t buffer_size() const { return m_buffer_size; }
+	
+	/** Used by drivers to prevent port from changing buffers */
+	void fixed_buffers(bool b) { m_fixed_buffers = b; }
+	bool fixed_buffers()       { return m_fixed_buffers; }
+
+protected:
+	PortBase(Node* const node, const string& name, size_t index, size_t poly, PortInfo* port_info, size_t buffer_size);
+	
+	// Prevent copies (undefined)
+	PortBase(const PortBase<T>& copy);
+	PortBase& operator=(const Port&);
+
+	void allocate_buffers();
+
+	size_t      m_buffer_size;
+	bool        m_fixed_buffers;
+	bool        m_is_tied;
+	PortBase*   m_tied_port;
+	
+	Array<Buffer<T>*> m_buffers;
+};
+
+
+template class PortBase<sample>;
+template class PortBase<MidiMessage>;
+
+} // namespace Om
+
+#endif // PORTBASE_H