/* This file is part of Ingen.  Copyright (C) 2006 Dave Robillard.
 * 
 * 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 DUPLEXPORT_H
#define DUPLEXPORT_H

#include <string>
#include "types.h"
#include "Array.h"
#include "Buffer.h"
#include "InputPort.h"
#include "OutputPort.h"
using std::string;

namespace Ingen {
	
class MidiMessage;
class Node;


/** A duplex port (which is both an InputPort and an OutputPort)
 *
 * This is used for Patch ports, since they need to appear as both an input
 * and an output port based on context.  Eg. a patch output appears as an
 * input inside the patch, so nodes inside the patch can feed it data.
 *
 * \ingroup engine
 */
template <typename T>
class DuplexPort : public InputPort<T>, public OutputPort<T>
{
public:
	DuplexPort(Node* parent, const string& name, size_t index, size_t poly, DataType type, size_t buffer_size, bool is_output);
	virtual ~DuplexPort() {}

	virtual void prepare_buffers(size_t nframes) {}
	
	virtual bool is_input()  const { return !_is_output; }
	virtual bool is_output() const { return _is_output; }

protected:
	bool _is_output;
};


template class DuplexPort<Sample>;
template class DuplexPort<MidiMessage>;

} // namespace Ingen

#endif // DUPLEXPORT_H