io_processor.h

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/*
    Copyright (C) 2001 Paul Davis

    This program 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.

    This program 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 more 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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_redirect_h__
#define __ardour_redirect_h__

#include <string>
#include <boost/shared_ptr.hpp>

#include <glibmm/threads.h>

#include "pbd/undo.h"

#include "ardour/ardour.h"
#include "ardour/processor.h"

class XMLNode;

namespace ARDOUR {

class Session;
class IO;
class Route;

class LIBARDOUR_API IOProcessor : public Processor
{
  public:
        IOProcessor (Session&, bool with_input, bool with_output,
                     const std::string& proc_name, const std::string io_name="",
                     ARDOUR::DataType default_type = DataType::AUDIO, bool sendish=false);
        IOProcessor (Session&, boost::shared_ptr<IO> input, boost::shared_ptr<IO> output,
                     const std::string& proc_name, ARDOUR::DataType default_type = DataType::AUDIO);
        virtual ~IOProcessor ();

        bool set_name (const std::string& str);

        bool does_routing() const { return true; }

        virtual ChanCount natural_output_streams() const;
        virtual ChanCount natural_input_streams () const;

        boost::shared_ptr<IO>       input()       { return _input; }
        boost::shared_ptr<const IO> input() const { return _input; }
        boost::shared_ptr<IO>       output()       { return _output; }
        boost::shared_ptr<const IO> output() const { return _output; }
        void set_input (boost::shared_ptr<IO>);
        void set_output (boost::shared_ptr<IO>);

        void silence (framecnt_t nframes);
        void disconnect ();

        void increment_port_buffer_offset (pframes_t);

        virtual bool feeds (boost::shared_ptr<Route> other) const;

        PBD::Signal2<void,IOProcessor*,bool>     AutomationPlaybackChanged;
        PBD::Signal2<void,IOProcessor*,uint32_t> AutomationChanged;

        XMLNode& state (bool full_state);
        int set_state (const XMLNode&, int version);

        static void prepare_for_reset (XMLNode& state, const std::string& name);

  protected:
        boost::shared_ptr<IO> _input;
        boost::shared_ptr<IO> _output;

  private:
        /* disallow copy construction */
        IOProcessor (const IOProcessor&);

        virtual int set_state_2X (const XMLNode &, int);

        bool _own_input;
        bool _own_output;

};

} // namespace ARDOUR

#endif /* __ardour_redirect_h__ */