File indexing completed on 2024-06-23 04:49:28
0001 /* 0002 SPDX-FileCopyrightText: 2003-2004 Mark Borgerding <Mark@Borgerding.net> 0003 SPDX-License-Identifier: BSD-3-Clause 0004 All rights reserved. 0005 0006 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 0007 0008 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 0009 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or 0010 other materials provided with the distribution. 0011 * Neither the author nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written 0012 permission. 0013 0014 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 0015 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY 0016 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 0017 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 0018 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0019 */ 0020 0021 #pragma once 0022 0023 #include "../kiss_fft.h" 0024 #include "kiss_fftnd.h" 0025 #include "kiss_fftr.h" 0026 0027 #ifdef __cplusplus 0028 extern "C" { 0029 #endif 0030 0031 typedef struct kiss_fftndr_state *kiss_fftndr_cfg; 0032 0033 kiss_fftndr_cfg kiss_fftndr_alloc(const int *dims, int ndims, int inverse_fft, void *mem, size_t *lenmem); 0034 /* 0035 dims[0] must be even 0036 0037 If you don't care to allocate space, use mem = lenmem = NULL 0038 */ 0039 0040 void kiss_fftndr(kiss_fftndr_cfg cfg, const kiss_fft_scalar *timedata, kiss_fft_cpx *freqdata); 0041 /* 0042 input timedata has dims[0] X dims[1] X ... X dims[ndims-1] scalar points 0043 output freqdata has dims[0] X dims[1] X ... X dims[ndims-1]/2+1 complex points 0044 */ 0045 0046 void kiss_fftndri(kiss_fftndr_cfg cfg, const kiss_fft_cpx *freqdata, kiss_fft_scalar *timedata); 0047 /* 0048 input and output dimensions are the exact opposite of kiss_fftndr 0049 */ 0050 0051 #define kiss_fftr_free free 0052 0053 #ifdef __cplusplus 0054 } 0055 #endif