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JPX 2000 image

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This commit is contained in:
Jakub Melka
2019-05-12 14:59:08 +02:00
parent 4fa3c079f2
commit 5896196f56
2 changed files with 19 additions and 14 deletions
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21
PdfForQtLib/sources/pdfcolorspaces.cpp
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@ -646,17 +646,18 @@ QImage PDFIndexedColorSpace::getImage(const PDFImageData& imageData) const
image.fill(QColor(Qt::white));
unsigned int componentCount = imageData.getComponents();
QDataStream stream(imageData.getData(), QIODevice::ReadOnly);
PDFBitReader reader(stream, imageData.getBitsPerComponent());
QDataStream stream(const_cast<QByteArray*>(&imageData.getData()), QIODevice::ReadOnly);
PDFBitReader reader(&stream, imageData.getBitsPerComponent());
/*
if (componentCount != getColorComponentCount())
{
throw PDFParserException(PDFTranslationContext::tr("Invalid colors for color space. Color space has %1 colors. Provided color count is %4.").arg(getColorComponentCount()).arg(componentCount));
}*/
throw PDFParserException(PDFTranslationContext::tr("Invalid colors for indexed color space. Color space has %1 colors. Provided color count is %4.").arg(getColorComponentCount()).arg(componentCount));
}
Q_ASSERT(componentCount == 1);
PDFColor color;
color.resize(componentCount);
color.resize(1);
for (unsigned int i = 0, rowCount = imageData.getHeight(); i < rowCount; ++i)
{
@ -665,12 +666,8 @@ QImage PDFIndexedColorSpace::getImage(const PDFImageData& imageData) const
for (unsigned int j = 0; j < imageData.getWidth(); ++j)
{
const unsigned char* currentData = rowData + (j * componentCount);
for (unsigned int k = 0; k < componentCount; ++k)
{
constexpr const double COEFFICIENT = 1.0 / 255.0;
color[k] = currentData[k] * COEFFICIENT;
}
PDFBitReader::Value index = reader.read();
color[0] = index;
QColor transformedColor = getColor(color);
QRgb rgb = transformedColor.rgb();