fft.h

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/* Copyright  (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (fft.h).
 * ---------------------------------------------------------------------------------------
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 */

#ifndef RARCH_FFT_H__
#define RARCH_FFT_H__

#include <retro_inline.h>
#include <math/complex.h>

typedef struct fft fft_t;

fft_t *fft_new(unsigned block_size_log2);

void fft_free(fft_t *fft);

void fft_process_forward_complex(fft_t *fft,
      fft_complex_t *out, const fft_complex_t *in, unsigned step);

void fft_process_forward(fft_t *fft,
      fft_complex_t *out, const float *in, unsigned step);

void fft_process_inverse(fft_t *fft,
      float *out, const fft_complex_t *in, unsigned step);


#endif