aubio 0.3.2
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00001 /* 00002 Copyright (C) 2003 Paul Brossier 00003 00004 This program is free software; you can redistribute it and/or modify 00005 it under the terms of the GNU General Public License as published by 00006 the Free Software Foundation; either version 2 of the License, or 00007 (at your option) any later version. 00008 00009 This program is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 GNU General Public License for more details. 00013 00014 You should have received a copy of the GNU General Public License 00015 along with this program; if not, write to the Free Software 00016 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00017 00018 */ 00019 00026 #ifndef FFT_H_ 00027 #define FFT_H_ 00028 00029 /* note that <complex.h> is not included here but only in aubio_priv.h, so that 00030 * c++ projects can still use their own complex definition. */ 00031 #include <fftw3.h> 00032 00033 #ifdef HAVE_COMPLEX_H 00034 #if FFTW3F_SUPPORT 00035 #define FFTW_TYPE fftwf_complex 00036 #else 00037 #define FFTW_TYPE fftw_complex 00038 #endif 00039 #else 00040 #if FFTW3F_SUPPORT 00041 00042 #define FFTW_TYPE float 00043 #else 00044 00045 #define FFTW_TYPE double 00046 #endif 00047 #endif 00048 00049 #ifdef __cplusplus 00050 extern "C" { 00051 #endif 00052 00054 typedef FFTW_TYPE fft_data_t; 00055 00064 typedef struct _aubio_fft_t aubio_fft_t; 00065 00071 aubio_fft_t * new_aubio_fft(uint_t size); 00077 void del_aubio_fft(aubio_fft_t * s); 00086 void aubio_fft_do (const aubio_fft_t *s, const smpl_t * data, 00087 fft_data_t * spectrum, const uint_t size); 00096 void aubio_fft_rdo(const aubio_fft_t *s, const fft_data_t * spectrum, 00097 smpl_t * data, const uint_t size); 00105 void aubio_fft_getnorm(smpl_t * norm, fft_data_t * spectrum, uint_t size); 00113 void aubio_fft_getphas(smpl_t * phase, fft_data_t * spectrum, uint_t size); 00114 00121 typedef struct _aubio_mfft_t aubio_mfft_t; 00122 00129 aubio_mfft_t * new_aubio_mfft(uint_t winsize, uint_t channels); 00137 void aubio_mfft_do (aubio_mfft_t * fft,fvec_t * in,cvec_t * fftgrain); 00145 void aubio_mfft_rdo(aubio_mfft_t * fft,cvec_t * fftgrain, fvec_t * out); 00151 void del_aubio_mfft(aubio_mfft_t * fft); 00152 00153 00154 #ifdef __cplusplus 00155 } 00156 #endif 00157 00158 #endif