aubio  0.3.2
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Pages
fft.h
Go to the documentation of this file.
1 /*
2  Copyright (C) 2003 Paul Brossier
3 
4  This program is free software; you can redistribute it and/or modify
5  it under the terms of the GNU General Public License as published by
6  the Free Software Foundation; either version 2 of the License, or
7  (at your option) any later version.
8 
9  This program is distributed in the hope that it will be useful,
10  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  GNU General Public License for more details.
13 
14  You should have received a copy of the GNU General Public License
15  along with this program; if not, write to the Free Software
16  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 
18 */
19 
26 #ifndef FFT_H_
27 #define FFT_H_
28 
29 /* note that <complex.h> is not included here but only in aubio_priv.h, so that
30  * c++ projects can still use their own complex definition. */
31 #include <fftw3.h>
32 
33 #ifdef HAVE_COMPLEX_H
34 #if FFTW3F_SUPPORT
35 #define FFTW_TYPE fftwf_complex
36 #else
37 #define FFTW_TYPE fftw_complex
38 #endif
39 #else
40 #if FFTW3F_SUPPORT
41 
42 #define FFTW_TYPE float
43 #else
44 
45 #define FFTW_TYPE double
46 #endif
47 #endif
48 
49 #ifdef __cplusplus
50 extern "C" {
51 #endif
52 
55 
64 typedef struct _aubio_fft_t aubio_fft_t;
65 
77 void del_aubio_fft(aubio_fft_t * s);
86 void aubio_fft_do (const aubio_fft_t *s, const smpl_t * data,
87  fft_data_t * spectrum, const uint_t size);
96 void aubio_fft_rdo(const aubio_fft_t *s, const fft_data_t * spectrum,
97  smpl_t * data, const uint_t size);
105 void aubio_fft_getnorm(smpl_t * norm, fft_data_t * spectrum, uint_t size);
113 void aubio_fft_getphas(smpl_t * phase, fft_data_t * spectrum, uint_t size);
114 
121 typedef struct _aubio_mfft_t aubio_mfft_t;
122 
129 aubio_mfft_t * new_aubio_mfft(uint_t winsize, uint_t channels);
137 void aubio_mfft_do (aubio_mfft_t * fft,fvec_t * in,cvec_t * fftgrain);
145 void aubio_mfft_rdo(aubio_mfft_t * fft,cvec_t * fftgrain, fvec_t * out);
151 void del_aubio_mfft(aubio_mfft_t * fft);
152 
153 
154 #ifdef __cplusplus
155 }
156 #endif
157 
158 #endif