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From "Tilman Hausherr (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PDFBOX-4327) NullPointerException in PDFStreamEngine.processSoftMask() when running ExtractImages
Date Mon, 01 Oct 2018 06:03:00 GMT

     [ https://issues.apache.org/jira/browse/PDFBOX-4327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tilman Hausherr updated PDFBOX-4327:
------------------------------------
    Description: 
{noformat}
Exception in thread "main" java.lang.NullPointerException
        at org.apache.pdfbox.contentstream.PDFStreamEngine.processSoftMask(PDFStreamEngine.java:201)
        at org.apache.pdfbox.tools.ExtractImages$ImageGraphicsEngine.run(ExtractImages.java:207)
        at org.apache.pdfbox.tools.ExtractImages.extract(ExtractImages.java:182)
        at org.apache.pdfbox.tools.ExtractImages.run(ExtractImages.java:145)
        at org.apache.pdfbox.tools.ExtractImages.main(ExtractImages.java:90)
        at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:62){noformat}
The cause is that the ExtGState containing the softmask isn't assigned to the graphics state.
Just assigning the softmask isn't enough (another NPE occurs) because the initial CTM (needed
by a {{clone()}}) is only set when using {{copyIntoGraphicsState}}.

  was:
{noformat}
Exception in thread "main" java.lang.NullPointerException
        at org.apache.pdfbox.contentstream.PDFStreamEngine.processSoftMask(PDFStreamEngine.java:201)
        at org.apache.pdfbox.tools.ExtractImages$ImageGraphicsEngine.run(ExtractImages.java:207)
        at org.apache.pdfbox.tools.ExtractImages.extract(ExtractImages.java:182)
        at org.apache.pdfbox.tools.ExtractImages.run(ExtractImages.java:145)
        at org.apache.pdfbox.tools.ExtractImages.main(ExtractImages.java:90)
        at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:62){noformat}
The cause is that the ExtGState containing the softmask isn't assigned to the graphics state.
Just assigning the softmask isn't enough (another NPE occurs) because the initial CTM (needed
by a clone) is only set when using {{copyIntoGraphicsState}}.


> NullPointerException in PDFStreamEngine.processSoftMask() when running ExtractImages
> ------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-4327
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4327
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Utilities
>    Affects Versions: 2.0.11
>            Reporter: Tilman Hausherr
>            Assignee: Tilman Hausherr
>            Priority: Major
>             Fix For: 2.0.13, 3.0.0 PDFBox
>
>         Attachments: 000163-p2.pdf
>
>
> {noformat}
> Exception in thread "main" java.lang.NullPointerException
>         at org.apache.pdfbox.contentstream.PDFStreamEngine.processSoftMask(PDFStreamEngine.java:201)
>         at org.apache.pdfbox.tools.ExtractImages$ImageGraphicsEngine.run(ExtractImages.java:207)
>         at org.apache.pdfbox.tools.ExtractImages.extract(ExtractImages.java:182)
>         at org.apache.pdfbox.tools.ExtractImages.run(ExtractImages.java:145)
>         at org.apache.pdfbox.tools.ExtractImages.main(ExtractImages.java:90)
>         at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:62){noformat}
> The cause is that the ExtGState containing the softmask isn't assigned to the graphics
state. Just assigning the softmask isn't enough (another NPE occurs) because the initial CTM
(needed by a {{clone()}}) is only set when using {{copyIntoGraphicsState}}.



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