/home/marsyas/marsyas/src/marsyas/AutoCorrelation.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_AUTOCORRELATION_H
#define MARSYAS_AUTOCORRELATION_H

#include "MarSystem.h"  
#include "fft.h"

namespace Marsyas
{
class AutoCorrelation: public MarSystem
{
private:
  fft *myfft_;
  realvec scratch_;
  
    realvec norm_;
    mrs_natural normalize_;
    mrs_real octaveCost_;
    mrs_real octaveMax_;
    mrs_real voicing_;
    mrs_natural fftSize_;
    mrs_real re_,im_,am_, k_;
    mrs_natural lowSamples_;
    mrs_natural numSamples_;

    MarControlPtr ctrl_magcompress_;
    MarControlPtr   ctrl_normalize_;
    MarControlPtr   ctrl_octaveCost_;
    MarControlPtr ctrl_voicingThreshold_;
    MarControlPtr ctrl_aliasedOutput_;
    MarControlPtr ctrl_makePositive_;
    MarControlPtr ctrl_setr0to1_;
    MarControlPtr ctrl_setr0to0_;
    MarControlPtr ctrl_lowCutoff_;
    MarControlPtr ctrl_highCutoff_;
    

  virtual void addControls();
    void myUpdate(MarControlPtr sender);
  
public:
  AutoCorrelation(std::string name);
  ~AutoCorrelation();
  AutoCorrelation(const AutoCorrelation& a);
  
  MarSystem* clone() const;

  void myProcess(realvec& in, realvec& out);
};

}//namespace Marsyas

#endif

    

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