/*
  This file is part of Ingen.
  Copyright 2007-2012 David Robillard <http://drobilla.net/>

  Ingen is free software: you can redistribute it and/or modify it under the
  terms of the GNU Affero General Public License as published by the Free
  Software Foundation, either version 3 of the License, or 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 Affero General Public License for details.

  You should have received a copy of the GNU Affero General Public License
  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef INGEN_ENGINE_DUPLEXPORT_HPP
#define INGEN_ENGINE_DUPLEXPORT_HPP

#include <string>

#include "BufferRef.hpp"
#include "InputPort.hpp"
#include "OutputPort.hpp"

namespace Ingen {
namespace Server {

class NodeImpl;

/** 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
 */
class DuplexPort : public InputPort, public OutputPort
{
public:
	DuplexPort(BufferFactory&     bufs,
	           NodeImpl*          parent,
	           const std::string& name,
	           uint32_t           index,
	           bool               polyphonic,
	           uint32_t           poly,
	           PortType           type,
	           LV2_URID           buffer_type,
	           const Raul::Atom&  value,
	           size_t             buffer_size,
	           bool               is_output);

	virtual ~DuplexPort() {}

	uint32_t max_tail_poly(Context& context) const;

	bool get_buffers(BufferFactory&          bufs,
	                 Raul::Array<BufferRef>* buffers,
	                 uint32_t                poly,
	                 bool                    real_time) const;

	void pre_process(Context& context);
	void post_process(Context& context);

	bool is_input()  const { return !_is_output; }
	bool is_output() const { return _is_output; }

protected:
	bool _is_output;
};

} // namespace Server
} // namespace Ingen

#endif // INGEN_ENGINE_DUPLEXPORT_HPP