Tilman Hausherr created PDFBOX-2204:
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Summary: java.lang.ArrayIndexOutOfBoundsException in
SampledImageReader.from8bit
Key: PDFBOX-2204
URL: https://issues.apache.org/jira/browse/PDFBOX-2204
Project: PDFBox
Issue Type: Bug
Components: Rendering
Affects Versions: 2.0.0
Reporter: Tilman Hausherr
I get this with the attached file:
{code}
java.lang.ArrayIndexOutOfBoundsException: 8296
at
org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from8bit(SampledImageReader.java:253)
at
org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getRGBImage(SampledImageReader.java:146)
at
org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:188)
at
org.apache.pdfbox.util.operator.pagedrawer.Invoke.process(Invoke.java:80)
{code}
The problem is in JPXFilter. Per the spec, we must ignore the
BITS_PER_COMPONENT value from the PDF and use the one from the image. We set
BITS_PER_COMPONENT to 8 because colorModel.getComponentSize(0) is 8.
colorModel.getPixelSize() is 4. In "normal" images, the sum of the
colorModel.getComponentSize() values equals colorModel.getPixelSize().
I'm not sure what to do. I am using this code locally:
{code}
ColorModel colorModel = image.getColorModel();
int pixelSize = colorModel.getPixelSize();
int[] componentSize = colorModel.getComponentSize();
if (pixelSize < componentSize[0])
{
LOG.warn("componentSize[0] of image ignored, because pixelSize
< componentSize[0]");
LOG.warn("pixelSize: " + pixelSize);
LOG.warn("componentSize.length " + componentSize.length);
for (int i = 0; i < componentSize.length; ++i)
{
LOG.warn("componentSize[" + i + "]: " + componentSize[i]);
}
}
else
{
parameters.setInt(COSName.BITS_PER_COMPONENT, componentSize[0]);
}
{code}
and now the PDF renders properly and the image at the bottom right is almost
correct. (A circle on the left is missing)
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