ICEpdf
  1. ICEpdf
  2. PDF-866

High CPU load when trying to render pages in PDF

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 5.1.2
          • Fix Version/s: 6.0
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            All

            Description

            With the provided PDF, there is a high CPU load when trying to render the contents of the PDF file. No errors are thrown and after leaving the viewer for 10-15 min, the page content still doesn't show.

              Activity

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              Arran Mccullough created issue -
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              Patrick Corless added a comment -

              The file in question uses type 3 fonts. And there appears to be a parsing issue while interpreting one of the inline images which puts the parser into an infinite loop,

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              Patrick Corless added a comment - The file in question uses type 3 fonts. And there appears to be a parsing issue while interpreting one of the inline images which puts the parser into an infinite loop,
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              Patrick Corless added a comment -

              The image in question is indeed inline but it's actually not the data stream that 's the problem but some rather strange postscript in the dictionary of the inline image: "[null<</K -1/Columns 16>>]"

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              Patrick Corless added a comment - The image in question is indeed inline but it's actually not the data stream that 's the problem but some rather strange postscript in the dictionary of the inline image: " [null<</K -1/Columns 16>>] "
              Patrick Corless made changes -
              Field Original Value New Value
              Fix Version/s 5.2 [ 10970 ]
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              Patrick Corless added a comment -

              The parsing error is related to the fact the image array tokens were not white space separated as expected. I've make a small tweak to the content parser which addresses this issue. Still need a full QA run but don't expect any problems.

              Because of the use of Type 3 fonts, the font rendering quality can be improved by using the system property -Dorg.icepdf.core.imageReference=smoothScaled

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              Patrick Corless added a comment - The parsing error is related to the fact the image array tokens were not white space separated as expected. I've make a small tweak to the content parser which addresses this issue. Still need a full QA run but don't expect any problems. Because of the use of Type 3 fonts, the font rendering quality can be improved by using the system property -Dorg.icepdf.core.imageReference=smoothScaled
              Patrick Corless made changes -
              Status Open [ 1 ] Resolved [ 5 ]
              Resolution Fixed [ 1 ]
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #44289 Tue Mar 24 11:40:27 MDT 2015 patrick.corless PDF-866 fixed a byte offset issue for the token "ID" and processing inline data streams.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-5.0.1/icepdf/core/src/org/icepdf/core/util/content/AbstractContentParser.java
              Patrick Corless made changes -
              Status Resolved [ 5 ] Closed [ 6 ]
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #46087 Thu Oct 15 08:04:47 MDT 2015 patrick.corless PDF-866 merged content parser changes.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-5.1.1/icepdf/core/src/org/icepdf/core/util/content/AbstractContentParser.java
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #49602 Wed Nov 30 12:02:26 MST 2016 patrick.corless PDF-866 addition of a few more content parser changes, mainly for general code protection.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-5.1.1/icepdf/core/src/org/icepdf/core/util/content/AbstractContentParser.java

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Arran Mccullough
                • Votes:
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                  Watchers:
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                  Dates

                  • Created:
                    Updated:
                    Resolved: