/*
 * Copyright (C) 2003-2012 Fons Adriaensen <fons@kokkinizita.net>
 * Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
 * Copyright (C) 2009-2013 Paul Davis <paul@linuxaudiosystems.com>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef __libardour_mtdm_h__
#define __libardour_mtdm_h__

#include <stddef.h>

#include "ardour/libardour_visibility.h"

class LIBARDOUR_API MTDM
{
public:

    MTDM (int fsamp);
    int process (size_t len, float *inp, float *out);
    int resolve (void);
    void invert (void) { _inv ^= 1; }
    int    inv (void) { return _inv; }
    double del (void) { return _del; }
    double err (void) { return _err; }
    float get_peak () { const float rv = _peak; _peak = 0; return rv; }

private:
    class Freq {
      public:
	int   p;
	int   f;
	float xa;
	float ya;
	float x1;
	float y1;
	float x2;
	float y2;
    };

    double  _del;
    double  _err;
    float   _wlp;
    int     _cnt;
    int     _inv;
    Freq    _freq [13];
    float   _peak;
};

#endif /* __libardour_mtdm_h__ */