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102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Edouard Griffiths, F4EXB //
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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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#include "chirpchatdemoddecoder.h"
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#include "chirpchatdemoddecodertty.h"
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#include "chirpchatdemoddecoderascii.h"
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#include "chirpchatdemoddecoderlora.h"
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ChirpChatDemodDecoder::ChirpChatDemodDecoder() :
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m_codingScheme(ChirpChatDemodSettings::CodingTTY),
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m_nbSymbolBits(5),
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m_nbParityBits(1),
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m_hasCRC(true),
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m_hasHeader(true)
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{}
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ChirpChatDemodDecoder::~ChirpChatDemodDecoder()
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{}
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void ChirpChatDemodDecoder::setNbSymbolBits(unsigned int spreadFactor, unsigned int deBits)
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{
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m_spreadFactor = spreadFactor;
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if (deBits >= spreadFactor) {
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m_deBits = m_spreadFactor - 1;
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} else {
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m_deBits = deBits;
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}
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m_nbSymbolBits = m_spreadFactor - m_deBits;
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}
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void ChirpChatDemodDecoder::decodeSymbols(const std::vector<unsigned short>& symbols, QString& str)
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{
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switch(m_codingScheme)
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{
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case ChirpChatDemodSettings::CodingTTY:
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if (m_nbSymbolBits == 5) {
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ChirpChatDemodDecoderTTY::decodeSymbols(symbols, str);
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}
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break;
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case ChirpChatDemodSettings::CodingASCII:
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if (m_nbSymbolBits == 5) {
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ChirpChatDemodDecoderASCII::decodeSymbols(symbols, str);
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}
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break;
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default:
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break;
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}
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}
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void ChirpChatDemodDecoder::decodeSymbols(const std::vector<unsigned short>& symbols, QByteArray& bytes)
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{
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switch(m_codingScheme)
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{
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case ChirpChatDemodSettings::CodingLoRa:
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if (m_nbSymbolBits >= 5)
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{
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ChirpChatDemodDecoderLoRa::decodeBytes(
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bytes,
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symbols,
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m_nbSymbolBits,
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m_hasHeader,
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m_hasCRC,
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m_nbParityBits,
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m_packetLength,
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m_earlyEOM,
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m_headerParityStatus,
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m_headerCRCStatus,
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m_payloadParityStatus,
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m_payloadCRCStatus
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);
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ChirpChatDemodDecoderLoRa::getCodingMetrics(
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m_nbSymbolBits,
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m_nbParityBits,
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m_packetLength,
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m_hasHeader,
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m_hasCRC,
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m_nbSymbols,
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m_nbCodewords
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);
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}
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break;
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default:
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break;
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}
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}
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