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3719602c PC |
1 | /* Copyright (C) 2010-2020 The RetroArch team |
2 | * | |
3 | * --------------------------------------------------------------------------------------- | |
4 | * The following license statement only applies to this file (fft.h). | |
5 | * --------------------------------------------------------------------------------------- | |
6 | * | |
7 | * Permission is hereby granted, free of charge, | |
8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), | |
9 | * to deal in the Software without restriction, including without limitation the rights to | |
10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, | |
11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | |
16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #ifndef RARCH_FFT_H__ | |
24 | #define RARCH_FFT_H__ | |
25 | ||
26 | #include <retro_inline.h> | |
27 | #include <math/complex.h> | |
28 | ||
29 | typedef struct fft fft_t; | |
30 | ||
31 | fft_t *fft_new(unsigned block_size_log2); | |
32 | ||
33 | void fft_free(fft_t *fft); | |
34 | ||
35 | void fft_process_forward_complex(fft_t *fft, | |
36 | fft_complex_t *out, const fft_complex_t *in, unsigned step); | |
37 | ||
38 | void fft_process_forward(fft_t *fft, | |
39 | fft_complex_t *out, const float *in, unsigned step); | |
40 | ||
41 | void fft_process_inverse(fft_t *fft, | |
42 | float *out, const fft_complex_t *in, unsigned step); | |
43 | ||
44 | #endif |