VampPluginSDK 2.10
FFT.h
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1/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
2
3/*
4 Vamp
5
6 An API for audio analysis and feature extraction plugins.
7
8 Centre for Digital Music, Queen Mary, University of London.
9 Copyright 2006-2012 Chris Cannam and QMUL.
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11 Permission is hereby granted, free of charge, to any person
12 obtaining a copy of this software and associated documentation
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36
37#ifndef _VAMP_FFT_H_
38#define _VAMP_FFT_H_
39
40#include "plugguard.h"
42
43namespace Vamp {
44
59class FFT
60{
61public:
74 static void forward(unsigned int n,
75 const double *ri, const double *ii,
76 double *ro, double *io);
77
92 static void inverse(unsigned int n,
93 const double *ri, const double *ii,
94 double *ro, double *io);
95};
96
110{
111public:
116 FFTComplex(unsigned int n);
117
119
129 void forward(const double *ci, double *co);
130
141 void inverse(const double *ci, double *co);
142
143private:
144 class D;
145 D *m_d;
146};
147
162{
163public:
168 FFTReal(unsigned int n);
169
171
180 void forward(const double *ri, double *co);
181
192 void inverse(const double *ci, double *ro);
193
194private:
195 class D;
196 D *m_d;
197};
198
199}
200
202
203#endif
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:110
void inverse(const double *ci, double *co)
Calculate an inverse transform of size n.
void forward(const double *ci, double *co)
Calculate a forward transform of size n.
FFTComplex(unsigned int n)
Prepare to calculate transforms of size n.
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:162
void forward(const double *ri, double *co)
Calculate a forward transform of size n.
FFTReal(unsigned int n)
Prepare to calculate transforms of size n.
D * m_d
Definition: FFT.h:196
void inverse(const double *ci, double *ro)
Calculate an inverse transform of size n.
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:60
static void forward(unsigned int n, const double *ri, const double *ii, double *ro, double *io)
Calculate a one-shot forward transform of size n.
static void inverse(unsigned int n, const double *ri, const double *ii, double *ro, double *io)
Calculate a one-shot inverse transform of size n.
Definition: FFT.h:43
#define _VAMP_SDK_PLUGSPACE_BEGIN(h)
Definition: plugguard.h:79
#define _VAMP_SDK_PLUGSPACE_END(h)
Definition: plugguard.h:80