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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31  Digital Music; Queen Mary, University of London; and Chris Cannam
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36 
37 #ifndef _VAMP_FFT_H_
38 #define _VAMP_FFT_H_
39 
40 #include "plugguard.h"
42 
43 namespace Vamp {
44 
59 class FFT
60 {
61 public:
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 {
111 public:
116  FFTComplex(unsigned int n);
117 
118  ~FFTComplex();
119 
129  void forward(const double *ci, double *co);
130 
141  void inverse(const double *ci, double *co);
142 
143 private:
144  class D;
145  D *m_d;
146 };
147 
161 class FFTReal
162 {
163 public:
168  FFTReal(unsigned int n);
169 
170  ~FFTReal();
171 
180  void forward(const double *ri, double *co);
181 
192  void inverse(const double *ci, double *ro);
193 
194 private:
195  class D;
196  D *m_d;
197 };
198 
199 }
200 
202 
203 #endif
Definition: FFT.h:43
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:161
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:109
D * m_d
Definition: FFT.h:195
#define _VAMP_SDK_PLUGSPACE_BEGIN(h)
Definition: plugguard.h:79
A simple FFT implementation provided for convenience of plugin authors.
Definition: FFT.h:59
#define _VAMP_SDK_PLUGSPACE_END(h)
Definition: plugguard.h:80