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Add exporting of X/28 packets as M/29

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This commit is contained in:
G.K.MacGregor
2021-09-06 22:07:14 +01:00
parent 43691750ef
commit d8afb84861
4 changed files with 110 additions and 0 deletions
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52
loadsave.cpp
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@@ -535,6 +535,58 @@ void saveTTI(QSaveFile &file, const TeletextDocument &document)
}
}
void exportM29File(QSaveFile &file, const TeletextDocument &document)
{
const PageBase &subPage = *document.currentSubPage();
QTextStream outStream(&file);
auto writeM29Packet=[&](int designationCode)
{
if (subPage.packetExists(28, designationCode)) {
QByteArray outLine = subPage.packet(28, designationCode);
outStream << QString("OL,29,");
// TTI stores raw values with bit 6 set, doesn't do Hamming encoding
outLine[0] = designationCode | 0x40;
for (int c=1; c<outLine.size(); c++)
outLine[c] = outLine.at(c) | 0x40;
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
outStream << outLine << Qt::endl;
#else
outStream << outLine << endl;
#endif
}
};
outStream.setCodec("ISO-8859-1");
if (!document.description().isEmpty())
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
outStream << "DE," << document.description() << Qt::endl;
#else
outStream << "DE," << document.description() << endl;
#endif
// Force page number to xFF
outStream << QString("PN,%1ff00").arg(document.pageNumber() >> 8, 1, 16);
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
outStream << Qt::endl;
#else
outStream << endl;
#endif
outStream << "PS,8000";
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
outStream << Qt::endl;
#else
outStream << endl;
#endif
writeM29Packet(0);
writeM29Packet(1);
writeM29Packet(4);
}
void exportT42File(QSaveFile &file, const TeletextDocument &document)
{
const PageBase &subPage = *document.currentSubPage();