/* snotch.h This file is part of a program that implements a Software-Defined Radio. Copyright (C) 2014, 2022, 2023 Warren Pratt, NR0V Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. The author can be reached by email at warren@wpratt.com */ /******************************************************************************************************** * * * Bi-Quad Notch * * * ********************************************************************************************************/ #ifndef wdsp_snotch_h #define wdsp_snotch_h #include "export.h" namespace WDSP { class WDSP_API SNOTCH { public: int run; int size; float* in; float* out; double rate; double f; double bw; double a0, a1, a2, b1, b2; double x0, x1, x2, y1, y2; static SNOTCH* create_snotch (int run, int size, float* in, float* out, int rate, double f, double bw); static void destroy_snotch (SNOTCH *a); static void flush_snotch (SNOTCH *a); static void xsnotch (SNOTCH *a); static void setBuffers_snotch (SNOTCH *a, float* in, float* out); static void setSamplerate_snotch (SNOTCH *a, int rate); static void setSize_snotch (SNOTCH *a, int size); static void SetSNCTCSSFreq (SNOTCH *a, double freq); static void SetSNCTCSSRun (SNOTCH *a, int run); private: static void calc_snotch (SNOTCH *a); }; } // namespace WDSP #endif