mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-08-21 13:36:35 -04:00
94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
|
///////////////////////////////////////////////////////////////////////////////////
|
||
|
// Copyright (C) 2020 Edouard Griffiths, F4EXB //
|
||
|
// //
|
||
|
// This program is free software; you can redistribute it and/or modify //
|
||
|
// it under the terms of the GNU General Public License as published by //
|
||
|
// the Free Software Foundation as version 3 of the License, or //
|
||
|
// (at your option) any later version. //
|
||
|
// //
|
||
|
// This program is distributed in the hope that it will be useful, //
|
||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
||
|
// GNU General Public License V3 for more details. //
|
||
|
// //
|
||
|
// You should have received a copy of the GNU General Public License //
|
||
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
||
|
///////////////////////////////////////////////////////////////////////////////////
|
||
|
|
||
|
#include "chirpchatmodencoder.h"
|
||
|
#include "chirpchatmodencodertty.h"
|
||
|
#include "chirpchatmodencoderascii.h"
|
||
|
#include "chirpchatmodencoderlora.h"
|
||
|
|
||
|
ChirpChatModEncoder::ChirpChatModEncoder() :
|
||
|
m_codingScheme(ChirpChatModSettings::CodingTTY),
|
||
|
m_nbSymbolBits(5),
|
||
|
m_nbParityBits(1),
|
||
|
m_hasCRC(true),
|
||
|
m_hasHeader(true)
|
||
|
{}
|
||
|
|
||
|
ChirpChatModEncoder::~ChirpChatModEncoder()
|
||
|
{}
|
||
|
|
||
|
void ChirpChatModEncoder::setNbSymbolBits(unsigned int spreadFactor, unsigned int deBits)
|
||
|
{
|
||
|
m_spreadFactor = spreadFactor;
|
||
|
|
||
|
if (deBits >= spreadFactor) {
|
||
|
m_deBits = m_spreadFactor - 1;
|
||
|
} else {
|
||
|
m_deBits = deBits;
|
||
|
}
|
||
|
|
||
|
m_nbSymbolBits = m_spreadFactor - m_deBits;
|
||
|
}
|
||
|
|
||
|
void ChirpChatModEncoder::encodeString(const QString& str, std::vector<unsigned short>& symbols)
|
||
|
{
|
||
|
switch (m_codingScheme)
|
||
|
{
|
||
|
case ChirpChatModSettings::CodingTTY:
|
||
|
if (m_nbSymbolBits == 5) {
|
||
|
ChirpChatModEncoderTTY::encodeString(str, symbols);
|
||
|
}
|
||
|
break;
|
||
|
case ChirpChatModSettings::CodingASCII:
|
||
|
if (m_nbSymbolBits == 7) {
|
||
|
ChirpChatModEncoderASCII::encodeString(str, symbols);
|
||
|
}
|
||
|
break;
|
||
|
case ChirpChatModSettings::CodingLoRa:
|
||
|
if (m_nbSymbolBits >= 5)
|
||
|
{
|
||
|
QByteArray bytes = str.toUtf8();
|
||
|
encodeBytesLoRa(bytes, symbols);
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void ChirpChatModEncoder::encodeBytes(const QByteArray& bytes, std::vector<unsigned short>& symbols)
|
||
|
{
|
||
|
switch (m_codingScheme)
|
||
|
{
|
||
|
case ChirpChatModSettings::CodingLoRa:
|
||
|
encodeBytesLoRa(bytes, symbols);
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
};
|
||
|
}
|
||
|
|
||
|
void ChirpChatModEncoder::encodeBytesLoRa(const QByteArray& bytes, std::vector<unsigned short>& symbols)
|
||
|
{
|
||
|
QByteArray payload(bytes);
|
||
|
|
||
|
if (m_hasCRC) {
|
||
|
ChirpChatModEncoderLoRa::addChecksum(payload);
|
||
|
}
|
||
|
|
||
|
ChirpChatModEncoderLoRa::encodeBytes(payload, symbols, m_nbSymbolBits, m_hasHeader, m_hasCRC, m_nbParityBits);
|
||
|
}
|