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MPluginControlInputPort.h

/*

    This file is part of la Marmite.
    Copyright (C) 2005 Nicolas Falquet.

    La Marmite 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.

    La Marmite 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 la Marmite ; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307  USA

*/

#ifndef M_PLUGIN_CONTROL_INPUT_PORT
#define M_PLUGIN_CONTROL_INPUT_PORT

#include "MPluginPort.h"
#include "MControlInputPort.h"

#include "MPlugin.h"

class MPluginControlInputPort : public MControlInputPort, public MPluginPort
{

  Q_OBJECT

public:

  // destructor

  virtual ~ MPluginControlInputPort ( ) { }

  // function

  virtual float * Buffer ( );

  virtual float Value ( ) const;

public slots :

  virtual bool Connect ( MControlOutputPort * port );

  virtual bool Disconnect ( MControlOutputPort * port );

  virtual void SetValue ( float f );

  /*
    public signals :

    void ValueChanged ( float f );
  */

protected :

  // protected constructor

  MPluginControlInputPort ( MPlugin * plugin, const unsigned long portNumber );

  friend void MPlugin::createControlInput ( const unsigned long portNumber );

  // protected attributes

  float _localValue;

};

#endif // M_PLUGIN_CONTROL_INPUT_PORT_H

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