David Robillard
e0aaed6d65
All #include statements that include a header that is a part of a library bundled with ardour MUST use quotes, not angle brackets. Do this: #include "ardour/types.h" NOT this: #include <ardour/types.h> Rationale: This is best practice in general, to ensure we include the local version and not the system version. That quotes mean "local" (in some sense) and angle brackets mean "system" (in some sense) is a ubiquitous convention and IIRC right in the C spec somewhere. More pragmatically, this is required by (my) waf (stuff) for dependencies to work correctly. That is: !!! FAILURE TO DO THIS CAN RESULT IN BROKEN BUILDS !!! Failure to comply is punishable by death by torture. :) P.S. It's not that dramatic in all cases, but this (in combination with some GCC flags specific to the include type) is the best way I have found to be absolutely 100% positive the local ones are being used (and we definitely want to be absolutely 100% positive on that one). git-svn-id: svn://localhost/ardour2/branches/3.0@4655 d708f5d6-7413-0410-9779-e7cbd77b26cf
76 lines
1.6 KiB
C++
76 lines
1.6 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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enum WindowingType {
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NONE,
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HANN
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};
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void reset();
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void analyze(ARDOUR::Sample *, WindowingType w = NONE);
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void calculate();
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uint32_t bins() const { return _data_size; }
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float power_at_bin(uint32_t i) const { return _power_at_bin[i]; }
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float phase_at_bin(uint32_t i) const { return _phase_at_bin[i]; }
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private:
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float *get_hann_window();
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uint32_t const _window_size;
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uint32_t const _data_size;
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uint32_t _iterations;
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float *_hann_window;
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float *_fftInput;
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float *_fftOutput;
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float *_power_at_bin;
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float *_phase_at_bin;
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fftwf_plan _plan;
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};
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#endif
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