c@225: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@225: /*
c@225:     QM DSP Library
c@225: 
c@225:     Centre for Digital Music, Queen Mary, University of London.
c@309:     This file 2005-2006 Christian Landone.
c@309: 
c@309:     This program is free software; you can redistribute it and/or
c@309:     modify it under the terms of the GNU General Public License as
c@309:     published by the Free Software Foundation; either version 2 of the
c@309:     License, or (at your option) any later version.  See the file
c@309:     COPYING included with this distribution for more information.
c@225: */
c@225: 
cannam@489: #ifndef QM_DSP_FILTFILT_H
cannam@489: #define QM_DSP_FILTFILT_H
c@225: 
c@225: #include "Filter.h"
c@225: 
c@378: /**
c@378:  * Zero-phase digital filter, implemented by processing the data
c@417:  * through a filter specified by the given filter parameters (see
c@378:  * Filter) and then processing it again in reverse.
c@378:  */
c@225: class FiltFilt  
c@225: {
c@225: public:
c@417:     FiltFilt(Filter::Parameters);
c@225:     virtual ~FiltFilt();
c@225: 
cannam@506:     void process(const double *const QM_R__ src,
cannam@506:                  double *const QM_R__ dst,
cannam@506:                  const int length);
c@225: 
c@225: private:
c@417:     Filter m_filter;
c@417:     int m_ord;
c@225: };
c@225: 
c@225: #endif