[ 
https://issues.apache.org/jira/browse/IMAGING-134?focusedWorklogId=256361&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-256361
 ]

ASF GitHub Bot logged work on IMAGING-134:
------------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Jun/19 03:54
            Start Date: 08/Jun/19 03:54
    Worklog Time Spent: 10m 
      Work Description: kinow commented on pull request #47: IMAGING-134: Fix 
JPEG handling for files encoded with RST markers
URL: https://github.com/apache/commons-imaging/pull/47#discussion_r291792699
 
 

 ##########
 File path: 
src/main/java/org/apache/commons/imaging/formats/jpeg/decoder/JpegDecoder.java
 ##########
 @@ -71,11 +73,23 @@ public boolean beginSOS() {
     public void visitSOS(final int marker, final byte[] markerBytes, final 
byte[] imageData) {
         final ByteArrayInputStream is = new ByteArrayInputStream(imageData);
         try {
+            // read the scan header
             final int segmentLength = read2Bytes("segmentLength", is, "Not a 
Valid JPEG File", getByteOrder());
             final byte[] sosSegmentBytes = readBytes("SosSegment",
                     is, segmentLength - 2, "Not a Valid JPEG File");
             sosSegment = new SosSegment(marker, sosSegmentBytes);
 
+            // read the payload of the scan, this is the remainder of image 
data after the header
+            // the payload contains the entropy-encoded segments (or ECS) 
divded by RST markers
 
 Review comment:
   s/divded/divided
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 256361)
    Time Spent: 1h 20m  (was: 1h 10m)

> Invalid marker found in entropy data
> ------------------------------------
>
>                 Key: IMAGING-134
>                 URL: https://issues.apache.org/jira/browse/IMAGING-134
>             Project: Commons Imaging
>          Issue Type: Bug
>          Components: Format: JPEG
>    Affects Versions: 1.0-alpha1
>            Reporter: John Hewson
>            Assignee: Bruno P. Kinoshita
>            Priority: Major
>             Fix For: Patch Needed
>
>         Attachments: image.jpeg
>
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> I'm getting the following exception when trying to read a JPEG:
> Exception in thread "main" org.apache.commons.imaging.ImageReadException: 
> Invalid marker found in entropy data
>       at 
> org.apache.commons.imaging.formats.jpeg.decoder.JpegInputStream.nextBit(JpegInputStream.java:50)
>       at 
> org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.decode(JpegDecoder.java:426)
>       at 
> org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.readMCU(JpegDecoder.java:320)
>       at 
> org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.visitSOS(JpegDecoder.java:124)
>       at 
> org.apache.commons.imaging.formats.jpeg.JpegUtils.traverseJFIF(JpegUtils.java:80)
>       at 
> org.apache.commons.imaging.formats.jpeg.decoder.JpegDecoder.decode(JpegDecoder.java:436)
>       at 
> org.apache.commons.imaging.formats.jpeg.JpegImageParser.getBufferedImage(JpegImageParser.java:98)
>       at 
> org.apache.commons.imaging.Imaging.getBufferedImage(Imaging.java:1378)
>       at 
> org.apache.commons.imaging.Imaging.getBufferedImage(Imaging.java:1341)



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