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94 lines
4.7 KiB
C++
94 lines
4.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2016-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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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 INCLUDE_CHIRPCHATDEMODDECODER_H
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#define INCLUDE_CHIRPCHATDEMODDECODER_H
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#include <vector>
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#include <QObject>
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#include "util/messagequeue.h"
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#include "chirpchatdemodsettings.h"
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class ChirpChatDemodDecoder : public QObject
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{
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Q_OBJECT
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public:
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ChirpChatDemodDecoder();
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~ChirpChatDemodDecoder();
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void setCodingScheme(ChirpChatDemodSettings::CodingScheme codingScheme) { m_codingScheme = codingScheme; }
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void setNbSymbolBits(unsigned int spreadFactor, unsigned int deBits);
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void setLoRaParityBits(unsigned int parityBits) { m_nbParityBits = parityBits; }
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void setLoRaHasHeader(bool hasHeader) { m_hasHeader = hasHeader; }
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void setLoRaHasCRC(bool hasCRC) { m_hasCRC = hasCRC; }
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void setLoRaPacketLength(unsigned int packetLength) { m_packetLength = packetLength; }
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MessageQueue *getInputMessageQueue() { return &m_inputMessageQueue; }
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void setOutputMessageQueue(MessageQueue *messageQueue) { m_outputMessageQueue = messageQueue; }
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private:
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bool handleMessage(const Message& cmd);
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void decodeSymbols(const std::vector<unsigned short>& symbols, QString& str); //!< For ASCII and TTY
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void decodeSymbols(const std::vector<unsigned short>& symbols, QByteArray& bytes); //!< For raw bytes (original LoRa)
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void decodeSymbols( //!< For FT coding scheme
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const std::vector<std::vector<float>>& mags, // vector of symbols magnitudes
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int nbSymbolBits, //!< number of bits per symbol
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std::string& msg, //!< formatted message
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std::string& call1, //!< 1st callsign or shorthand
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std::string& call2, //!< 2nd callsign
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std::string& loc, //!< locator, report or shorthand
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bool& reply //!< true if message is a reply report
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);
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unsigned int getNbParityBits() const { return m_nbParityBits; }
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unsigned int getPacketLength() const { return m_packetLength; }
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bool getHasCRC() const { return m_hasCRC; }
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unsigned int getNbSymbols() const { return m_nbSymbols; }
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unsigned int getNbCodewords() const { return m_nbCodewords; }
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bool getEarlyEOM() const { return m_earlyEOM; }
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int getHeaderParityStatus() const { return m_headerParityStatus; }
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bool getHeaderCRCStatus() const { return m_headerCRCStatus; }
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int getPayloadParityStatus() const { return m_payloadParityStatus; }
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bool getPayloadCRCStatus() const { return m_payloadCRCStatus; }
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ChirpChatDemodSettings::CodingScheme m_codingScheme;
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unsigned int m_spreadFactor;
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unsigned int m_deBits;
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unsigned int m_nbSymbolBits;
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// LoRa attributes
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unsigned int m_nbParityBits; //!< 1 to 4 Hamming FEC bits for 4 payload bits
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bool m_hasCRC;
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bool m_hasHeader;
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unsigned int m_packetLength;
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unsigned int m_nbSymbols; //!< Number of encoded symbols: this is only dependent of nbSymbolBits, nbParityBits, packetLength, hasHeader and hasCRC
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unsigned int m_nbCodewords; //!< Number of encoded codewords: this is only dependent of nbSymbolBits, nbParityBits, packetLength, hasHeader and hasCRC
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bool m_earlyEOM;
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int m_headerParityStatus;
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bool m_headerCRCStatus;
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int m_payloadParityStatus;
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bool m_payloadCRCStatus;
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MessageQueue m_inputMessageQueue;
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MessageQueue *m_outputMessageQueue;
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private slots:
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void handleInputMessages();
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};
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#endif // INCLUDE_CHIRPCHATDEMODDECODER_H
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