fft.h

Fourier Transforms & FFT Algorithm Source Code

/*
 *	Fast Fourier Transform include file
 *
 *	Copyright (c) 2000 Mark Taylor
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef LAME_FFT_H
#define LAME_FFT_H

#include "encoder.h"

void fft_long(lame_internal_flags* const gfc, FLOAT x_real[BLKSIZE], 
               int chn, const sample_t *data[2] );

void fft_short(lame_internal_flags* const gfc, FLOAT x_real[3][BLKSIZE_s], 
               int chn, const sample_t *data[2] );

void init_fft(lame_internal_flags* const gfc );

#endif

/* End of fft.h */