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62 lines
3.0 KiB
C++
62 lines
3.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2023 Edouard Griffiths, F4EXB. //
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// //
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// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon //
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// written by Robert Morris, AB1HL //
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// reformatted and adapted to Qt and SDRangel context //
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// //
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// Caution: this is intentionally not thread safe and one such engine should //
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// be allocated by thread. Due to optimization of FFT buffers these buffers are //
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// not shared among threads. //
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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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#ifndef FFT_H
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#define FFT_H
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#include <QMutex>
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#include <vector>
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#include <complex>
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#include "export.h"
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namespace FT8
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{
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class FFTBuffers;
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class FT8_API FFTEngine
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{
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public:
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std::vector<std::complex<float>> one_fft(const std::vector<float> &samples, int i0, int block);
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std::vector<float> one_ifft(const std::vector<std::complex<float>> &bins);
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typedef std::vector<std::vector<std::complex<float>>> ffts_t;
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ffts_t ffts(const std::vector<float> &samples, int i0, int block);
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std::vector<std::complex<float>> one_fft_c(const std::vector<float> &samples, int i0, int block);
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std::vector<std::complex<float>> one_fft_cc(const std::vector<std::complex<float>> &samples, int i0, int block);
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std::vector<std::complex<float>> one_ifft_cc(const std::vector<std::complex<float>> &bins);
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std::vector<float> hilbert_shift(const std::vector<float> &x, float hz0, float hz1, int rate);
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FFTEngine();
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~FFTEngine();
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private:
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std::vector<std::complex<float>> analytic(const std::vector<float> &x);
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FFTBuffers *m_fftBuffers;
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}; // FFTEngine
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} // namespace FT8
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#endif
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