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Fix Cyrillic encoding

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This commit is contained in:
srcejon 2023-09-03 09:02:53 +01:00
parent 52c798cc46
commit fdd73c9d99
2 changed files with 73 additions and 58 deletions
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115
sdrbase/util/baudot.cpp
View File

@ -81,8 +81,8 @@ const QStringList Baudot::m_usFigure = {
const QStringList Baudot::m_russianLetter = {
"\0", "Е", "\n", "А", " ", "С", "И", "У",
"\r", "Д", "П", "Й", "Н", "Ф", "Ц", "К",
"Т", "З", "Л", "В", "Х", "Ы", "P", "Я",
"\r", "Д", "Р", "Й", "Ч", "Ф", "Ц", "К",
"Т", "З", "Л", "В", "Х", "Ы", "П", "Я",
"О", "Б", "Г", "<", "М", "Ь", "Ж", ">"
};
@ -206,36 +206,37 @@ void BaudotEncoder::setCharacterSet(Baudot::CharacterSet characterSet)
switch (m_characterSet)
{
case Baudot::ITA2:
m_letters = Baudot::m_ita2Letter;
m_figures = Baudot::m_ita2Figure;
m_chars[LETTERS] = Baudot::m_ita2Letter;
m_chars[FIGURES] = Baudot::m_ita2Figure;
break;
case Baudot::UK:
m_letters = Baudot::m_ukLetter;
m_figures = Baudot::m_ukFigure;
m_chars[LETTERS] = Baudot::m_ukLetter;
m_chars[FIGURES] = Baudot::m_ukFigure;
break;
case Baudot::EUROPEAN:
m_letters = Baudot::m_europeanLetter;
m_figures = Baudot::m_europeanFigure;
m_chars[LETTERS] = Baudot::m_europeanLetter;
m_chars[FIGURES] = Baudot::m_europeanFigure;
break;
case Baudot::US:
m_letters = Baudot::m_usLetter;
m_figures = Baudot::m_usFigure;
m_chars[LETTERS] = Baudot::m_usLetter;
m_chars[FIGURES] = Baudot::m_usFigure;
break;
case Baudot::RUSSIAN:
m_letters = Baudot::m_russianLetter;
m_figures = Baudot::m_russianFigure;
m_chars[LETTERS] = Baudot::m_ita2Letter;
m_chars[FIGURES] = Baudot::m_russianFigure;
break;
case Baudot::MURRAY:
m_letters = Baudot::m_murrayLetter;
m_figures = Baudot::m_murrayFigure;
m_chars[LETTERS] = Baudot::m_murrayLetter;
m_chars[FIGURES] = Baudot::m_murrayFigure;
break;
default:
qDebug() << "BaudotEncoder::BaudotEncoder: Unsupported character set " << m_characterSet;
m_letters = Baudot::m_ita2Letter;
m_figures = Baudot::m_ita2Figure;
m_chars[LETTERS] = Baudot::m_ita2Letter;
m_chars[FIGURES] = Baudot::m_ita2Figure;
m_characterSet = Baudot::ITA2;
break;
}
m_chars[(int)CYRILLIC] = Baudot::m_russianLetter;
}
void BaudotEncoder::setUnshiftOnSpace(bool unshiftOnSpace)
@ -262,14 +263,11 @@ void BaudotEncoder::setStopBits(int stopBits)
void BaudotEncoder::init()
{
m_figure = false;
m_page = LETTERS;
}
bool BaudotEncoder::encode(QChar c, unsigned &bits, unsigned int &bitCount)
{
unsigned int code;
const unsigned int codeLen = 5;
bits = 0;
bitCount = 0;
@ -277,50 +275,63 @@ bool BaudotEncoder::encode(QChar c, unsigned &bits, unsigned int &bitCount)
c = c.toUpper();
QString s(c);
// We could create reverse look-up tables to speed this up, but it's only 200 baud...
if (m_letters.contains(s))
if (s == '>')
{
if (m_figure)
{
// Switch to letters
addStartBits(bits, bitCount);
code = reverseBits(m_letters.indexOf(">"), codeLen);
addBits(bits, bitCount, code, codeLen);
addStopBits(bits, bitCount);
m_figure = false;
}
addStartBits(bits, bitCount);
code = reverseBits(m_letters.indexOf(s), codeLen);
addBits(bits, bitCount, code, codeLen);
addStopBits(bits, bitCount);
addCode(bits, bitCount, m_chars[m_page].indexOf(s));
m_page = LETTERS;
return true;
}
else if (m_figures.contains(s))
else if (s == '<')
{
if (!m_figure)
addCode(bits, bitCount, m_chars[m_page].indexOf(s));
m_page = FIGURES;
return true;
}
else if ((m_characterSet == Baudot::RUSSIAN) && (s == '\0'))
{
// Switch to figures
addStartBits(bits, bitCount);
code = reverseBits(m_letters.indexOf("<"), codeLen);
addBits(bits, bitCount, code, codeLen);
addStopBits(bits, bitCount);
m_figure = true;
}
addStartBits(bits, bitCount);
code = reverseBits(m_figures.indexOf(s), codeLen);
addBits(bits, bitCount, code, codeLen);
addStopBits(bits, bitCount);
if ((s == " ") && m_unshiftOnSpace) {
m_figure = false;
addCode(bits, bitCount, m_chars[m_page].indexOf(s));
m_page = CYRILLIC;
return true;
}
// We could create reverse look-up tables to speed this up, but it's only 200 baud...
// Is character in current page? If so, use that, as it avoids switching
if (m_chars[m_page].contains(s))
{
addCode(bits, bitCount, m_chars[m_page].indexOf(s));
return true;
}
else
{
qDebug() << "BaudotEncoder::encode: Can't encode" << c;
// Look for character in other pages
const QString switchPage[] = { ">", "<", "\0" };
for (int page = m_page == LETTERS ? 1 : 0; page < (m_characterSet == Baudot::RUSSIAN) ? 3 : 2; page++)
{
if (m_chars[page].contains(s))
{
// Switch to page
addCode(bits, bitCount, m_chars[m_page].indexOf(switchPage[page]));
m_page = (BaudotEncoder::Page)page;
addCode(bits, bitCount, m_chars[m_page].indexOf(s));
return true;
}
}
}
return false;
}
return true;
void BaudotEncoder::addCode(unsigned& bits, unsigned int& bitCount, unsigned int code) const
{
const unsigned int codeLen = 5;
addStartBits(bits, bitCount);
code = reverseBits(code, codeLen);
addBits(bits, bitCount, code, codeLen);
addStopBits(bits, bitCount);
}
void BaudotEncoder::addStartBits(unsigned& bits, unsigned int& bitCount) const

10
sdrbase/util/baudot.h
View File

@ -88,6 +88,7 @@ public:
private:
void addCode(unsigned& bits, unsigned int& bitCount, unsigned int code) const;
void addStartBits(unsigned int& bits, unsigned int& bitCount) const;
void addStopBits(unsigned int& bits, unsigned int& bitCount) const;
void addBits(unsigned int& bits, unsigned int& bitCount, int data, int count) const;
@ -96,9 +97,12 @@ private:
Baudot::CharacterSet m_characterSet;
bool m_unshiftOnSpace;
QStringList m_letters;
QStringList m_figures;
bool m_figure;
QStringList m_chars[3];
enum Page {
LETTERS,
FIGURES,
CYRILLIC
} m_page;
bool m_msbFirst;
int m_startBits;
int m_stopBits;