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Current File : //proc/self/root/usr/include/CLAM/FourierTransform.hxx

/*
 * Copyright (c) 2001-2006 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef FourierTransform_hxx
#define FourierTransform_hxx
#include <vector>
#if USE_FFTW3
#include <fftw3.h>
#endif

class FourierTransform {
	std::vector<double> _spectrum;
	unsigned long mFrameSize;
	bool mIsComplex;
#if USE_FFTW3
	double * _realInput;
	fftw_complex * _complexOutput;
	fftw_plan _plan;
#endif
public:
	FourierTransform(unsigned long int frameSize, double normalizationFactor, bool isComplex);
	~FourierTransform();

	void doIt(const float * input);
	void doIt(const double * input);
	const std::vector<double> & spectrum() const {return _spectrum;};
private:
	template <typename T> void doItGeneric(const T * input);
};

#endif//FourierTransform_hxx

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