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https://github.com/f4exb/sdrangel.git
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
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/* phrot.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2014, 2022, 2023 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@wpratt.com
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*/
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/********************************************************************************************************
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* *
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* Phase Rotator *
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* *
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********************************************************************************************************/
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#ifndef wdsp_phrot_h
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#define wdsp_phrot_h
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#include "export.h"
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namespace WDSP {
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class TXA;
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class WDSP_API PHROT
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{
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public:
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int reverse;
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int run;
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int size;
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float* in;
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float* out;
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int rate;
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double fc;
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int nstages;
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// normalized such that a0 = 1
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double a1, b0, b1;
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double *x0, *x1, *y0, *y1;
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static PHROT* create_phrot (int run, int size, float* in, float* out, int rate, double fc, int nstages);
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static void destroy_phrot (PHROT *a);
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static void flush_phrot (PHROT *a);
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static void xphrot (PHROT *a);
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static void setBuffers_phrot (PHROT *a, float* in, float* out);
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static void setSamplerate_phrot (PHROT *a, int rate);
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static void setSize_phrot (PHROT *a, int size);
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// TXA Properties
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static void SetPHROTRun (TXA& txa, int run);
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static void SetPHROTCorner (TXA& txa, double corner);
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static void SetPHROTNstages (TXA& txa, int nstages);
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static void SetPHROTReverse (TXA& txa, int reverse);
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private:
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static void calc_phrot (PHROT *a);
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static void decalc_phrot (PHROT *a);
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};
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} // namespace WDSP
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#endif
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