ICEpdf
  1. ICEpdf
  2. PDF-240

Jbig2 regression in 4.1.1

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 4.1.1
          • Fix Version/s: 4.1.3
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            any

            Description

            A user has pointed out a regression in the jbig2 support. I've looked into this issue an little closer and the claim is valid. An error check was added for empty JBIG2Global values in the Stream class which is causing the regression. The Hashtable processing block in the jbig2Decode method should instead read:

                     Hashtable decodeparms = library.getDictionary(entries, "DecodeParms");
                        if (decodeparms != null) {
                            Stream globalsStream = (Stream) library.getObject(decodeparms, "JBIG2Globals");
                            if (globalsStream != null){
                                byte[] globals = globalsStream.getDecodedStreamBytes();
                                if (globals != null && globals.length > 0) {
                                    decoder.setGlobalData(globals);
                                    globals = null;
                                }
                            }
                        }

              Activity

              Ascending order - Click to sort in descending order
              Patrick Corless created issue -
              Patrick Corless made changes -
              Field Original Value New Value
              Salesforce Case []
              Fix Version/s 4.2 [ 10243 ]
              Patrick Corless made changes -
              Salesforce Case []
              Fix Version/s 4.1.3 [ 10257 ]
              Fix Version/s 4.2 [ 10243 ]
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #23756 Mon Jan 10 08:56:39 MST 2011 patrick.corless PDF-240 fixed regression in decoding jbig2 global stream parameters which kept some jbig2 images from being properly rendered.
              Files Changed
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/Stream.java
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              Patrick Corless added a comment -

              Checked in patch to fix jbig 2 decoding error when no decode parameters are encountered.

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              Patrick Corless added a comment - Checked in patch to fix jbig 2 decoding error when no decode parameters are encountered.
              Patrick Corless made changes -
              Status Open [ 1 ] Resolved [ 5 ]
              Resolution Fixed [ 1 ]
              Ken Fyten made changes -
              Status Resolved [ 5 ] Closed [ 6 ]

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: