1 | /* |
2 | * Copyright (c) 2003-2004, Mark Borgerding. All rights reserved. |
3 | * This file is part of KISS FFT - https://github.com/mborgerding/kissfft |
4 | * |
5 | * SPDX-License-Identifier: BSD-3-Clause |
6 | * See COPYING file for more information. |
7 | */ |
8 | |
9 | #ifndef KISS_NDR_H |
10 | #define KISS_NDR_H |
11 | |
12 | #include "kiss_fft.h" |
13 | #include "kiss_fftr.h" |
14 | #include "kiss_fftnd.h" |
15 | |
16 | #ifdef __cplusplus |
17 | extern "C" { |
18 | #endif |
19 | |
20 | typedef struct kiss_fftndr_state *kiss_fftndr_cfg; |
21 | |
22 | |
23 | kiss_fftndr_cfg KISS_FFT_API kiss_fftndr_alloc(const int *dims,int ndims,int inverse_fft,void*mem,size_t*lenmem); |
24 | /* |
25 | dims[0] must be even |
26 | |
27 | If you don't care to allocate space, use mem = lenmem = NULL |
28 | */ |
29 | |
30 | |
31 | void KISS_FFT_API kiss_fftndr( |
32 | kiss_fftndr_cfg cfg, |
33 | const kiss_fft_scalar *timedata, |
34 | kiss_fft_cpx *freqdata); |
35 | /* |
36 | input timedata has dims[0] X dims[1] X ... X dims[ndims-1] scalar points |
37 | output freqdata has dims[0] X dims[1] X ... X dims[ndims-1]/2+1 complex points |
38 | */ |
39 | |
40 | void KISS_FFT_API kiss_fftndri( |
41 | kiss_fftndr_cfg cfg, |
42 | const kiss_fft_cpx *freqdata, |
43 | kiss_fft_scalar *timedata); |
44 | /* |
45 | input and output dimensions are the exact opposite of kiss_fftndr |
46 | */ |
47 | |
48 | |
49 | #define kiss_fftndr_free free |
50 | |
51 | #ifdef __cplusplus |
52 | } |
53 | #endif |
54 | |
55 | #endif |
56 | |