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https://github.com/f4exb/sdrangel.git
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94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
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///////////////////////////////////////////////////////////////////////////////////
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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 "chirpchatmodencoder.h"
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#include "chirpchatmodencodertty.h"
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#include "chirpchatmodencoderascii.h"
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#include "chirpchatmodencoderlora.h"
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ChirpChatModEncoder::ChirpChatModEncoder() :
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m_codingScheme(ChirpChatModSettings::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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ChirpChatModEncoder::~ChirpChatModEncoder()
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{}
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void ChirpChatModEncoder::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 ChirpChatModEncoder::encodeString(const QString& str, std::vector<unsigned short>& symbols)
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{
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switch (m_codingScheme)
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{
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case ChirpChatModSettings::CodingTTY:
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if (m_nbSymbolBits == 5) {
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ChirpChatModEncoderTTY::encodeString(str, symbols);
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}
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break;
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case ChirpChatModSettings::CodingASCII:
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if (m_nbSymbolBits == 7) {
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ChirpChatModEncoderASCII::encodeString(str, symbols);
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}
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break;
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case ChirpChatModSettings::CodingLoRa:
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if (m_nbSymbolBits >= 5)
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{
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QByteArray bytes = str.toUtf8();
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encodeBytesLoRa(bytes, symbols);
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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 ChirpChatModEncoder::encodeBytes(const QByteArray& bytes, std::vector<unsigned short>& symbols)
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{
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switch (m_codingScheme)
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{
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case ChirpChatModSettings::CodingLoRa:
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encodeBytesLoRa(bytes, symbols);
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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 ChirpChatModEncoder::encodeBytesLoRa(const QByteArray& bytes, std::vector<unsigned short>& symbols)
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{
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QByteArray payload(bytes);
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if (m_hasCRC) {
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ChirpChatModEncoderLoRa::addChecksum(payload);
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}
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ChirpChatModEncoderLoRa::encodeBytes(payload, symbols, m_nbSymbolBits, m_hasHeader, m_hasCRC, m_nbParityBits);
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}
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