ref: d998190e422036f80ffb1dac9c5ba1a16ed4bb51
dir: /src/fft.h/
/*
Copyright (C) 2003 Paul Brossier
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file
* Fft object (fftw3f)
* */
#ifndef FFT_H_
#define FFT_H_
/* <complex.h> is not included here but only in aubio_priv.h, so that c++
* projects can still use their own complex definition. */
#include <fftw3.h>
#if FFTW3F_SUPPORT
#define FFTW_TYPE fftwf_complex
#else
#define FFTW_TYPE fftw_complex
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef FFTW_TYPE fft_data_t;
typedef struct _aubio_fft_t aubio_fft_t;
/* fftw funcs */
extern aubio_fft_t * new_aubio_fft(uint_t size);
extern void del_aubio_fft(aubio_fft_t * s);
extern void aubio_fft_do (const aubio_fft_t *s, const smpl_t * data,
fft_data_t * spectrum, const uint_t size);
extern void aubio_fft_rdo(const aubio_fft_t *s, const fft_data_t * spectrum,
smpl_t * data, const uint_t size);
/** get norm from spectrum */
void aubio_fft_getnorm(smpl_t * norm, fft_data_t * spectrum, uint_t size);
/** get phase from spectrum */
void aubio_fft_getphas(smpl_t * phase, fft_data_t * spectrum, uint_t size);
typedef struct _aubio_mfft_t aubio_mfft_t;
aubio_mfft_t * new_aubio_mfft(uint_t winsize, uint_t channels);
void aubio_mfft_do (aubio_mfft_t * fft,fvec_t * in,cvec_t * fftgrain);
void aubio_mfft_rdo(aubio_mfft_t * fft,cvec_t * fftgrain, fvec_t * out);
void del_aubio_mfft(aubio_mfft_t * fft);
#ifdef __cplusplus
}
#endif
#endif