mtdm.h

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/*
 * 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.
 */
 
#pragma once
 
#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);
 
        int inv (void)    const { return _inv; }
        double del (void) const { return _del; }
        double err (void) const { return _err; }
 
        void invert (void)
        {
                _inv ^= 1;
        }
 
        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;
};