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// ----------------------------------------------------------------------------
//
// Copyright (C) 2010-2018 Fons Adriaensen <fons@linuxaudio.org>
//
// 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, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
#ifndef __ACFILTER_H
#define __ACFILTER_H
#include <stdlib.h>
class ACfilter
{
public:
ACfilter (void) : _err (true) {}
~ACfilter (void) {}
int init (int fsamp);
void reset (void);
void process (size_t n, const float *in, float *opA, float *opC);
private:
bool _err;
float _w1, _w2, _w3, _w4, _ga, _gc; // filter coefficients and gains
float _z1a, _z1b, _z2, _z3, _z4a, _z4b; // filter state
};
#endif
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