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#ifndef FFT_H
#define FFT_H
/* Everything here comes from Audacity 1.3.13
(orignally in C++ and with more genericity and functionnality)
Original Author : Dominic Mazzoni
Licenced under GPL 2.0 (see LICENCE)
*/
void FFT(int NumSamples, int InverseTransform,
float *RealIn, float *ImagIn, float *RealOut, float *ImagOut);
void InitFFT();
int NumberOfBitsNeeded(int PowerOfTwo);
inline int FastReverseBits(int i, int NumBits);
int ReverseBits(int index, int NumBits);
void PowerSpectrum(float *In, float *Out);
#endif
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