/home/marsyas/marsyas/src/marsyas/Filter.h

/*
** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca>
**
** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#ifndef MARSYAS_FILTER_H
#define MARSYAS_FILTER_H

#include "MarSystem.h"

namespace Marsyas
{
class Filter: public MarSystem
{
private:
    mrs_natural norder_;

    mrs_natural dorder_;
    mrs_natural channels_;
    mrs_natural order_;
    realvec state_;
    mrs_real fgain_;
    realvec ncoeffs_;
    realvec dcoeffs_;

    void addControls();
    void myUpdate(MarControlPtr sender);

public:
    Filter(std::string name);
    ~Filter();

    MarSystem* clone() const;

    void myProcess(realvec& in, realvec& out);
    void write(std::string filename);
};

}//namespace Marsyas


#endif

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