mirror of https://github.com/f4exb/sdrangel.git
67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
//////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2015-2019, 2023 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon //
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// reformatted and adapted to Qt and SDRangel context //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "ft8plan.h"
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namespace FT8
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{
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Plan::Plan(int n)
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{
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n_ = n;
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r_ = (float *) fftwf_malloc(n * sizeof(float));
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c_ = (fftwf_complex *) fftwf_malloc(((n / 2) + 1) * sizeof(fftwf_complex));
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cc1_ = (fftwf_complex *)fftwf_malloc(n * sizeof(fftwf_complex));
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cc2_ = (fftwf_complex *)fftwf_malloc(n * sizeof(fftwf_complex));
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//
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// real -> complex
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//
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// FFTW_ESTIMATE
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// FFTW_MEASURE
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// FFTW_PATIENT
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// FFTW_EXHAUSTIVE
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int type = M_FFTW_TYPE;
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type_ = type;
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fwd_ = fftwf_plan_dft_r2c_1d(n, r_, c_, type);
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rev_ = fftwf_plan_dft_c2r_1d(n, c_, r_, type);
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//
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// complex -> complex
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//
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cfwd_ = fftwf_plan_dft_1d(n, cc1_, cc2_, FFTW_FORWARD, type);
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crev_ = fftwf_plan_dft_1d(n, cc2_, cc1_, FFTW_BACKWARD, type);
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}
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Plan::~Plan()
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{
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fftwf_destroy_plan(fwd_);
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fftwf_destroy_plan(rev_);
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fftwf_destroy_plan(cfwd_);
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fftwf_destroy_plan(crev_);
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fftwf_free(r_);
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fftwf_free(c_);
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fftwf_free(cc1_);
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fftwf_free(cc2_);
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}
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} // namesoace FT8
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