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JBIG2 - Generic refinement region

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This commit is contained in:
Jakub Melka
2019-10-30 17:44:04 +01:00
parent a60b13c3a0
commit 2e359d63d3
5 changed files with 465 additions and 14 deletions
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20
PdfForQtLib/sources/pdfutils.cpp
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@ -132,6 +132,26 @@ int8_t PDFBitReader::readSignedByte()
return *reinterpret_cast<const int8_t*>(&value);
}
QByteArray PDFBitReader::readSubstream(int length)
{
if (m_bitsInBuffer)
{
throw PDFException(PDFTranslationContext::tr("Can't get substream - remaining %1 bits in buffer.").arg(m_bitsInBuffer));
}
QByteArray result = m_stream->mid(m_position, length);
if (length == -1)
{
m_position = m_stream->size();
}
else
{
skipBytes(length);
}
return result;
}
PDFBitWriter::PDFBitWriter(Value bitsPerComponent) :
m_bitsPerComponent(bitsPerComponent),
m_mask((static_cast<Value>(1) << m_bitsPerComponent) - static_cast<Value>(1)),