00001 /*************************************************************************** 00002 ** 00003 ** This file is part of GeopsyCore. 00004 ** 00005 ** This library is free software; you can redistribute it and/or 00006 ** modify it under the terms of the GNU Lesser General Public 00007 ** License as published by the Free Software Foundation; either 00008 ** version 2.1 of the License, or (at your option) any later version. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 ** License for more details. 00014 ** 00015 ** You should have received a copy of the GNU Lesser General Public 00016 ** License along with this library; if not, write to the Free Software 00017 ** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 ** 00019 ** See http://www.geopsy.org for more information. 00020 ** 00021 ** Created : 2009-04-11 00022 ** Authors : 00023 ** Marc Wathelet 00024 ** Marc Wathelet (LGIT, Grenoble, France) 00025 ** 00026 ***************************************************************************/ 00027 00028 #ifndef FASTFOURIERTRANSFORM_H 00029 #define FASTFOURIERTRANSFORM_H 00030 00031 #include <QGpCoreTools.h> 00032 00033 #include "GeopsyCoreDLLExport.h" 00034 00035 namespace GeopsyCore { 00036 00037 class GEOPSYCORE_EXPORT FastFourierTransform 00038 { 00039 public: 00040 FastFourierTransform(); 00041 virtual ~FastFourierTransform() {} 00042 00043 virtual void forward(int nSamples, double * samples)=0; 00044 virtual void backward(int nSamples, double * samples)=0; 00045 00046 virtual void forward(int nSamples, Complex * samples)=0; 00047 virtual void backward(int nSamples, Complex * samples)=0; 00048 00049 virtual void manyForward(int howmany, int nSamples, Complex * samples)=0; 00050 virtual void manyBackward(int howmany, int nSamples, Complex * samples)=0; 00051 00052 static FastFourierTransform * instance() {return _self;} 00053 private: 00054 static FastFourierTransform * _self; 00055 }; 00056 00057 } // namespace GeopsyCore 00058 00059 #endif // FASTFOURIERTRANSFORM_H
