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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_SP_1D_C2C_H_ 00042 #define IFFT_SP_1D_C2C_H_ 1 00043 00045 /* @{ */ 00046 00049 /* @{ */ 00050 00051 #define IFFT_SP_1D_C2C_4STEP_MIN_SIZE ( 4*1024) 00052 #define IFFT_SP_1D_C2C_4STEP_MAX_SIZE (4*1024*1024) 00053 00058 #define IFFT_SP_1D_C2C_NUMOFLINEBUFS 2 00059 00066 /* IFFT plan 1D SP API */ 00067 fft_plan_t ifft_sp_plan_1d_c2c ( 00068 int N, /* IFFT size */ 00069 int mode, /* FFT_DIRECT or FFT_ECPY */ 00070 fft_callout_t fxns 00071 ); 00072 00105 /* IFFT execute 1D SP direct mode API */ 00106 int ifft_sp_1d_c2c_direct ( 00107 /* int N; IFFT size */ 00108 /* float *in; input pointer */ 00109 /* float *out; output pointer */ 00110 /* float *tw; twiddle pointer */ 00111 fft_param_u u, 00112 void *edmaState 00113 ); 00114 00115 00153 /* IFFT execute 1D SP ecpy mode API */ 00154 int ifft_sp_1d_c2c_ecpy ( 00155 /* int N; IFFT size */ 00156 /* int n1; stage1 IFFT size */ 00157 /* int n2; stage2 IFFT size */ 00158 /* float *data; data pointer */ 00159 /* float *work; working buffer pointer */ 00160 /* float *data_w; data internal pointer */ 00161 /* float *work_w; working buffer internal pointer */ 00162 /* float *tw; twiddle pointer */ 00163 /* float *tw_w; twiddle internal pointer */ 00164 fft_param_u u, 00165 void *edmaState 00166 ); 00167 00206 /* IFFT execute 1D SP 4-step ecpy mode API */ 00207 int ifft_sp_1d_c2c_4step_ecpy ( 00208 /* int N; IFFT size */ 00209 /* int n1; stage1 IFFT size */ 00210 /* int n2; stage2 IFFT size */ 00211 /* float *data; data pointer */ 00212 /* float *work; working buffer pointer */ 00213 /* float *data_w; data internal pointer */ 00214 /* float *work_w; working buffer internal pointer */ 00215 /* float *tw; twiddle pointer */ 00216 /* float *tw_w; twiddle internal pointer */ 00217 fft_param_u u, 00218 void *edmaState 00219 ); 00220 00221 /* }@ */ /* ingroup */ 00222 /* }@ */ /* ingroup */ 00223 00224 #endif /* IFFT_SP_1D_C2C_H_ */ 00225 00226 /* ======================================================================== */ 00227 /* End of file: ifft_sp_1d_c2c.h */ 00228 /* ------------------------------------------------------------------------ */ 00229 /* Copyright (c) 2013 Texas Instruments, Incorporated. */ 00230 /* All Rights Reserved. */ 00231 /* ======================================================================== */ 00232 00233