Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/fft.h
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00001 /*
00002 ** Copyright (C) 1998-2004 George Tzanetakis <gtzan@cs.uvic.ca>
00003 **
00004 ** This program is free software; you can redistribute it and/or modify
00005 ** it under the terms of the GNU General Public License as published by
00006 ** the Free Software Foundation; either version 2 of the License, or
00007 ** (at your option) any later version.
00008 **
00009 ** This program is distributed in the hope that it will be useful,
00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 ** GNU General Public License for more details.
00013 **
00014 ** You should have received a copy of the GNU General Public License
00015 ** along with this program; if not, write to the Free Software
00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 */
00018 
00019 #ifndef MARSYAS_FFT_H
00020 #define MARSYAS_FFT_H
00021 
00022 #include <cstdio>
00023 #include <cmath>
00024 #include <marsyas/common_header.h>
00025 
00026 namespace Marsyas
00027 {
00039 class fft
00040 {
00041 public:
00042   void bitreverse(mrs_real x[], int N);
00043   void rfft( mrs_real x[], int  N, int forward);
00044   void cfft(mrs_real x[], int N, int forward);
00045 
00046   // fft(SignalSource *src);
00047 
00048   // void update(unsigned int interSize, unsigned int decimSize);
00049   // void myProcess(fvec& in, fvec& out);
00050   // void myProcess(fvec& in, int instart, int inlength, fvec& out, int outstart, int outlength);
00051   // void unprocess(fvec& out, fvec& in);
00052 };
00053 
00054 }//namespace Marsyas
00055 
00056 
00057 #endif
00058