mirror of https://github.com/g4klx/MMDVM.git
43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
/*
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* Copyright (C) 2020 by Jonathan Naylor G4KLX
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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; either version 2 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 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "Config.h"
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#if defined(MODE_AX25)
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#if !defined(AX25Twist_H)
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#define AX25Twist_H
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class CAX25Twist {
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public:
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CAX25Twist(int8_t n);
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void process(q15_t* in, q15_t* out, uint8_t length);
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void setTwist(int8_t n);
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private:
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arm_fir_instance_q15 m_filter;
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q15_t m_state[40U]; // NoTaps + BlockSize - 1, 9 + 20 - 1 plus some spare
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};
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#endif
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#endif
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