![]() |
![]() |
00001 /* ======================================================================= */ 00002 /* TEXAS INSTRUMENTS, INC. */ 00003 /* */ 00004 /* FFTLIB FFT Library */ 00005 /* */ 00006 /* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ */ 00007 /* */ 00008 /* */ 00009 /* Redistribution and use in source and binary forms, with or without */ 00010 /* modification, are permitted provided that the following conditions */ 00011 /* are met: */ 00012 /* */ 00013 /* Redistributions of source code must retain the above copyright */ 00014 /* notice, this list of conditions and the following disclaimer. */ 00015 /* */ 00016 /* Redistributions in binary form must reproduce the above copyright */ 00017 /* notice, this list of conditions and the following disclaimer in the */ 00018 /* documentation and/or other materials provided with the */ 00019 /* distribution. */ 00020 /* */ 00021 /* Neither the name of Texas Instruments Incorporated nor the names of */ 00022 /* its contributors may be used to endorse or promote products derived */ 00023 /* from this software without specific prior written permission. */ 00024 /* */ 00025 /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */ 00026 /* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */ 00027 /* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */ 00028 /* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */ 00029 /* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ 00030 /* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ 00031 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */ 00032 /* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */ 00033 /* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */ 00034 /* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */ 00035 /* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 00036 /* */ 00037 /* ======================================================================= */ 00038 00039 #include <ti/fftlib/src/common/fft_common.h> 00040 00041 #ifndef IFFT_DP_1D_C2R_H_ 00042 #define IFFT_DP_1D_C2R_H_ 1 00043 00045 /* @{ */ 00046 00049 /* @{ */ 00050 00051 00052 #define IFFT_DP_1D_C2R_4STEP_MIN_SIZE ( 4*1024) 00053 #define IFFT_DP_1D_C2R_4STEP_MAX_SIZE (1024*1024) 00054 00059 #define IFFT_DP_1D_C2R_NUMOFLINEBUFS 2 00060 00067 /* IFFT plan 1D DP API */ 00068 fft_plan_t ifft_dp_plan_1d_c2r ( 00069 int N, /* IFFT size */ 00070 int mode, /* FFT_DIRECT or FFT_ECPY */ 00071 fft_callout_t fxns 00072 ); 00073 00105 /* IFFT execute 1D DP direct mode API */ 00106 int ifft_dp_1d_c2r_direct ( 00107 /* int N; IFFT size */ 00108 /* double *in; input pointer */ 00109 /* double *out; output pointer */ 00110 /* double *tw; twiddle pointer */ 00111 fft_param_u u, 00112 void *edmaState 00113 ); 00114 00151 /* IFFT execute 1D DP ecpy mode API */ 00152 int ifft_dp_1d_c2r_ecpy ( 00153 /* int N; IFFT size */ 00154 /* int n1; stage1 IFFT size */ 00155 /* int n2; stage2 IFFT size */ 00156 /* double *data; data pointer */ 00157 /* double *work; working buffer pointer */ 00158 /* double *data_w; data internal pointer */ 00159 /* double *work_w; working buffer internal pointer */ 00160 /* double *tw; twiddle pointer */ 00161 /* double *tw_w; twiddle internal pointer */ 00162 fft_param_u u, 00163 void *edmaState 00164 ); 00165 00201 /* IFFT execute 1D DP 4-step ecpy mode API */ 00202 int ifft_dp_1d_c2r_4step_ecpy ( 00203 /* int N; IFFT size */ 00204 /* int n1; stage1 IFFT size */ 00205 /* int n2; stage2 IFFT size */ 00206 /* double *data; data pointer */ 00207 /* double *work; working buffer pointer */ 00208 /* double *data_w; data internal pointer */ 00209 /* double *work_w; working buffer internal pointer */ 00210 /* double *tw; twiddle pointer */ 00211 /* double *tw_w; twiddle internal pointer */ 00212 fft_param_u u, 00213 void *edmaState 00214 ); 00215 00216 /* }@ */ /* ingroup */ 00217 /* }@ */ /* ingroup */ 00218 00219 #endif /* IFFT_DP_1D_C2R_H_ */ 00220 00221 /* ======================================================================== */ 00222 /* End of file: ifft_dp_1d_c2r.h */ 00223 /* ------------------------------------------------------------------------ */ 00224 /* Copyright (c) 2013 Texas Instruments, Incorporated. */ 00225 /* All Rights Reserved. */ 00226 /* ======================================================================== */ 00227 00228