d9106e99a4
git-svn-id: svn://localhost/ardour2/branches/3.0@3958 d708f5d6-7413-0410-9779-e7cbd77b26cf
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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Author: Sampo Savolainen
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_fft_h__
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#define __ardour_fft_h__
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#include <iostream>
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#include <stdio.h>
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#include <sys/types.h>
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#include <complex> // this needs to be included before fftw3.h
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#include <fftw3.h>
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#include <ardour/types.h>
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class FFT
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{
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public:
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FFT(uint32_t);
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~FFT();
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void reset();
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void analyze(ARDOUR::Sample *);
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void calculate();
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uint32_t bins() const { return _dataSize; }
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float powerAtBin(uint32_t i) const { return _powerAtBin[i]; }
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float phaseAtBin(uint32_t i) const { return _phaseAtBin[i]; }
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private:
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uint32_t const _windowSize;
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uint32_t const _dataSize;
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uint32_t _iterations;
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float *_fftInput;
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float *_fftOutput;
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float *_powerAtBin;
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float *_phaseAtBin;
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fftwf_plan _plan;
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};
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#endif
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