libs/qm-dsp/dsp/signalconditioning/Filter.h

   1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
   2
   3 /*
   4     QM DSP Library
   5
   6     Centre for Digital Music, Queen Mary, University of London.
   7     This file 2005-2006 Christian Landone.
   8
   9     This program is free software; you can redistribute it and/or
  10     modify it under the terms of the GNU General Public License as
  11     published by the Free Software Foundation; either version 2 of the
  12     License, or (at your option) any later version.  See the file
  13     COPYING included with this distribution for more information.
  14 */
  15
  16 #ifndef FILTER_H
  17 #define FILTER_H
  18
  19 #ifndef NULL
  20 #define NULL 0
  21 #endif
  22
  23 struct FilterConfig{
  24     unsigned int ord;
  25     double* ACoeffs;
  26     double* BCoeffs;
  27 };
  28
  29 class Filter
  30 {
  31 public:
  32     Filter( FilterConfig Config );
  33     virtual ~Filter();
  34
  35     void reset();
  36
  37     void process( double *src, double *dst, unsigned int length );
  38
  39
  40 private:
  41     void initialise( FilterConfig Config );
  42     void deInitialise();
  43
  44     unsigned int m_ord;
  45
  46     double* m_inBuffer;
  47     double* m_outBuffer;
  48
  49     double* m_ACoeffs;
  50     double* m_BCoeffs;
  51 };
  52
  53 #endif