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JBIG2 - bugfixing

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This commit is contained in:
Jakub Melka 2019-11-03 14:56:56 +01:00
parent ab10a6923e
commit 0b507c2610
4 changed files with 10 additions and 4 deletions
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2
JBIG2_Viewer/mainwindow.cpp
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@ -102,7 +102,7 @@ void MainWindow::on_actionAdd_JBIG2_image_triggered()
QImage image(imageData.getWidth(), imageData.getHeight(), QImage::Format_Mono); QImage image(imageData.getWidth(), imageData.getHeight(), QImage::Format_Mono);
const uchar* sourceData = reinterpret_cast<const uchar*>(imageData.getData().constData()); const uchar* sourceData = reinterpret_cast<const uchar*>(imageData.getData().constData());
Q_ASSERT(imageData.getData().size() == image.byteCount()); Q_ASSERT(imageData.getData().size() == image.byteCount());
std::transform(sourceData, sourceData + imageData.getData().size(), image.bits(), [](const uchar value) { return ~value; }); std::transform(sourceData, sourceData + imageData.getData().size(), image.bits(), [](const uchar value) { return value; });
addImage(file.fileName() + QString(", Decoded in %1 [msec]").arg(time), qMove(image)); addImage(file.fileName() + QString(", Decoded in %1 [msec]").arg(time), qMove(image));
} }
} }

1
PdfForQtLib/sources/pdfimage.cpp
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@ -670,6 +670,7 @@ PDFImage PDFImage::createImage(const PDFDocument* document,
PDFJBIG2Decoder decoder(qMove(data), qMove(globalData), errorReporter); PDFJBIG2Decoder decoder(qMove(data), qMove(globalData), errorReporter);
image.m_imageData = decoder.decode(maskingType); image.m_imageData = decoder.decode(maskingType);
image.m_imageData.setDecode(!decode.empty() ? qMove(decode) : std::vector<PDFReal>({ 0.0, 1.0 }));
} }
else if (colorSpace || isSoftMask) else if (colorSpace || isSoftMask)
{ {

6
PdfForQtLib/sources/pdfjbig2decoder.cpp
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@ -992,7 +992,7 @@ PDFImageData PDFJBIG2Decoder::decode(PDFImageData::MaskingType maskingType)
{ {
for (int column = 0; column < columns; ++column) for (int column = 0; column < columns; ++column)
{ {
writer.write(m_pageBitmap.getPixel(column, row)); writer.write(!m_pageBitmap.getPixel(column, row));
} }
writer.finishLine(); writer.finishLine();
} }
@ -1205,8 +1205,8 @@ void PDFJBIG2Decoder::processSymbolDictionary(const PDFJBIG2SegmentHeader& heade
parameters.isArithmeticCodingStateRetained = (symbolDictionaryFlags >> 9) & 0x0001; parameters.isArithmeticCodingStateRetained = (symbolDictionaryFlags >> 9) & 0x0001;
parameters.SDTEMPLATE = (symbolDictionaryFlags >> 10) & 0x0003; parameters.SDTEMPLATE = (symbolDictionaryFlags >> 10) & 0x0003;
parameters.SDRTEMPLATE = (symbolDictionaryFlags >> 12) & 0x0001; parameters.SDRTEMPLATE = (symbolDictionaryFlags >> 12) & 0x0001;
parameters.SDAT = readATTemplatePixelPositions((parameters.SDHUFF == 0) ? ((parameters.SDTEMPLATE == 0) ? 4 : 1) : 0); parameters.SDAT = readATTemplatePixelPositions((!parameters.SDHUFF) ? ((parameters.SDTEMPLATE == 0) ? 4 : 1) : 0);
parameters.SDRAT = readATTemplatePixelPositions((parameters.SDREFAGG == 1 && parameters.SDRTEMPLATE == 0) ? 2 : 0); parameters.SDRAT = readATTemplatePixelPositions((parameters.SDREFAGG && parameters.SDRTEMPLATE == 0) ? 2 : 0);
parameters.SDNUMEXSYMS = m_reader.readUnsignedInt(); parameters.SDNUMEXSYMS = m_reader.readUnsignedInt();
parameters.SDNUMNEWSYMS = m_reader.readUnsignedInt(); parameters.SDNUMNEWSYMS = m_reader.readUnsignedInt();

5
PdfForQtLib/sources/pdfutils.cpp
View File

@ -112,6 +112,11 @@ void PDFBitReader::alignToBytes()
if (remainder > 0) if (remainder > 0)
{ {
read(remainder); read(remainder);
if (m_bitsInBuffer == 0)
{
m_buffer = 0;
}
} }
} }