The file you mention likely has an almost empty stream. The other
viewers don't fail, that's the difference.
There might also be a different problem (object reference mismatch), so
it would be nice to have the file. Despite the LZW compression, the part
that fails isn't an image in this stack trace, it's the stream of a type
4 function for a DeviceN colorspace.
Tilman
On 16.12.2023 00:11, John Lussmyer wrote:
I have a customer that uses a LOT of PDF files. They currently have 2
files that are failing when we try to render them.
The same files can be viewed with Acrobat Reader or Foxit PDF with no
errors reported.
From Acrobat Reader file info:
PDF Producer: PDFOut V3.8 – build 201 – Oct 28 2022
PDF Version: 1.6 (Acrobat 7.x)
The stacktrace makes me suspect that the file has an error in it's
image compression data - which other readers somehow ignore.
Any suggestions?
This is the exception trace from PDFBox 3.0.1
java.io.IOException: negative array index: -1 near offset 1
at
org.apache.pdfbox.filter.LZWFilter.checkIndexBounds(LZWFilter.java:136)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.filter.LZWFilter.doLZWDecode(LZWFilter.java:110)
~[pdfbox-3.0.1.jar:3.0.1]
at org.apache.pdfbox.filter.LZWFilter.decode(LZWFilter.java:70)
~[pdfbox-3.0.1.jar:3.0.1]
at org.apache.pdfbox.filter.Filter.decode(Filter.java:96)
~[pdfbox-3.0.1.jar:3.0.1]
at org.apache.pdfbox.filter.Filter.decode(Filter.java:238)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.cos.COSInputStream.create(COSInputStream.java:73)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:172)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.cos.COSStream.createInputStream(COSStream.java:166)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.common.PDStream.createInputStream(PDStream.java:188)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.common.PDStream.toByteArray(PDStream.java:407)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.common.function.PDFunctionType4.<init>(PDFunctionType4.java:51)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.common.function.PDFunction.create(PDFunction.java:143)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceN.<init>(PDDeviceN.java:93)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace.create(PDColorSpace.java:184)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.PDResources.getColorSpace(PDResources.java:223)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.pdmodel.PDResources.getColorSpace(PDResources.java:193)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.contentstream.operator.color.SetNonStrokingColorSpace.process(SetNonStrokingColorSpace.java:56)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:892)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:530)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:505)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:152)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:282)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:330)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:247)
~[pdfbox-3.0.1.jar:3.0.1]
at
org.apache.pdfbox.rendering.PDFRenderer.renderImageWithDPI(PDFRenderer.java:233)
~[pdfbox-3.0.1.jar:3.0.1]
at
com.metrixsoftware.preview.PDFBoxRenderer.render(PDFBoxRenderer.java:79)
[bin/:?]
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