kopia lustrzana https://github.com/f4exb/sdrangel
55 wiersze
2.0 KiB
C++
55 wiersze
2.0 KiB
C++
/* fir.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2013, 2016, 2022 Warren Pratt, NR0V
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Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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 for more details.
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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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@pratt.one
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*/
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#ifndef wdsp_fir_h
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#define wdsp_fir_h
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#include <vector>
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#include "export.h"
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namespace WDSP {
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class WDSP_API FIR
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{
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public:
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static void fftcv_mults (std::vector<float>& mults, int NM, const float* impulse);
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static void fir_fsamp_odd (std::vector<float>& c_impulse, int N, const float* A, int rtype, double scale, int wintype);
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static void fir_fsamp (std::vector<float>& c_impulse, int N, const float* A, int rtype, double scale, int wintype);
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static void fir_bandpass (std::vector<float>& impulse, int N, double f_low, double f_high, double samplerate, int wintype, int rtype, double scale);
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static void mp_imp (int N, std::vector<float>& fir, std::vector<float>& mpfir, int pfactor, int polarity);
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private:
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static void analytic (int N, float* in, float* out);
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static void get_fsamp_window(std::vector<float>& window, int N, int wintype);
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static void fir_read (std::vector<float>& impulse, int N, const char *filename, int rtype, float scale);
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static void zff_impulse(std::vector<float>& impulse, int nc, float scale);
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};
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#endif
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} // namespace WDSP
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