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From "Trejkaz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BATIK-1077) ArrayIndexOutOfBoundsException in AbstractWMFPainter.getImage for 8-bit image inside WMF
Date Wed, 25 Jun 2014 05:52:24 GMT
Trejkaz created BATIK-1077:
------------------------------

             Summary: ArrayIndexOutOfBoundsException in AbstractWMFPainter.getImage for 8-bit
image inside WMF
                 Key: BATIK-1077
                 URL: https://issues.apache.org/jira/browse/BATIK-1077
             Project: Batik
          Issue Type: Bug
          Components: Utilities
            Reporter: Trejkaz
         Attachments: test.wmf

I get this error trying to get an image for a WMF.

{noformat}
java.lang.ArrayIndexOutOfBoundsException: 9064 
        at org.apache.batik.transcoder.wmf.tosvg.AbstractWMFPainter.getImage(AbstractWMFPainter.java:162)

        at org.apache.batik.transcoder.wmf.tosvg.AbstractWMFPainter.getImage(AbstractWMFPainter.java:74)

        at org.apache.batik.transcoder.wmf.tosvg.WMFPainter.paint(WMFPainter.java:837) 
{noformat}

I had a quick look already.

28 00 00 00 = header size (40 bytes)
c0 00 00 00 = width of image (192)
2f 00 00 00 = height of image (47)
01 00 = number of planes (1)
08 00 = bits per pixel (8)
00 00 00 00
40 23 00 00 = size of the image (9024)
00 00 00 00
00 00 00 00
00 00 00 00 = number of used colours (0, meaning "use all of them")
00 00 00 00 <- end of header (40th byte)

192 (width) x 47 (height) x 1 (bytes per pixel) x 1 (planes) = 9024

Header = 40 bytes
Palette = 256 bytes (2^8 because it's 8 bits per pixel)
Size of image = 9024 bytes (from calculation above)
Total size = 9320 > 9068 bytes available data

Despite these calculations seeming to show that the image is invalid, it does open in OpenOffice
perfectly fine, leading me to wonder how they are doing that...




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