2023-03-21 06:54:42 -04:00
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///////////////////////////////////////////////////////////////////////////////////
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2023-11-19 00:43:20 -05:00
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// Copyright (C) 2020, 2023 Jon Beniston, M7RCE <jon@beniston.com> //
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// Copyright (C) 2020, 2022 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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2023-03-21 06:54:42 -04:00
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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 SDRBASE_DSP_MORSEDEMOD_H_
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#define SDRBASE_DSP_MORSEDEMOD_H_
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#include <QString>
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#include "dsp/nco.h"
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#include "dsp/firfilter.h"
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#include "util/movingaverage.h"
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#include "util/message.h"
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#include "util/messagequeue.h"
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#include "export.h"
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// Morse code demodulator for use with VOR and ILS
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class SDRBASE_API MorseDemod {
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public:
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class SDRBASE_API MsgReportIdent : public Message {
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MESSAGE_CLASS_DECLARATION
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public:
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QString getIdent() const { return m_ident; }
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static MsgReportIdent* create(QString ident)
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{
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return new MsgReportIdent(ident);
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}
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private:
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QString m_ident;
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MsgReportIdent(QString ident) :
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Message(),
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m_ident(ident)
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{
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}
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};
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MorseDemod();
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void processOneSample(const Complex &magc);
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void applyChannelSettings(int channelSampleRate);
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void applySettings(int identThreshold);
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void reset();
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void setMessageQueueToChannel(MessageQueue *messageQueue) { m_messageQueueToChannel = messageQueue; }
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MessageQueue *getMessageQueueToChannel() const { return m_messageQueueToChannel; }
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private:
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MessageQueue *m_messageQueueToChannel;
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NCO m_ncoIdent;
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Bandpass<Complex> m_bandpassIdent;
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Lowpass<Complex> m_lowpassIdent;
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MovingAverageUtilVar<Real, double> m_movingAverageIdent;
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static const int m_identBins = 20;
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Real m_identMaxs[m_identBins];
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Real m_identNoise;
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int m_binSampleCnt;
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int m_binCnt;
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int m_samplesPerDot7wpm;
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int m_samplesPerDot10wpm;
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int m_prevBit;
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int m_bitTime;
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QString m_ident;
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int m_identThreshold;
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};
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#endif /* SDRBASE_DSP_MORSEDEMOD_H_ */
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