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https://issues.apache.org/jira/browse/PDFBOX-2267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14093008#comment-14093008
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ASF subversion and git services commented on PDFBOX-2267:
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Commit 1617331 from [~tilman] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1617331 ]
PDFBOX-2267: treat /Alternate as ONE colorspace
> IOException and partial rendering and colorspace creation error
> ---------------------------------------------------------------
>
> Key: PDFBOX-2267
> URL: https://issues.apache.org/jira/browse/PDFBOX-2267
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing, Rendering
> Affects Versions: 1.8.6, 1.8.7, 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Fix For: 1.8.7, 2.0.0
>
> Attachments: PDFBOX-2265-igalia.pdf
>
>
> I get this exception with the attached PDF, and the upper arc of the image is
> not rendered:
> {code}
> java.io.IOException: Unknown colorspace
> type:COSDictionary{(COSName{BlackPoint}:COSArray{[COSFloat{0.0},
> COSFloat{0.0}, COSFloat{0.0}]}) (COSName{Range}:COSArray{[COSFloat{-128.0},
> COSFloat{127.0}, COSFloat{-128.0}, COSFloat{127.0}]})
> (COSName{WhitePoint}:COSArray{[COSFloat{0.964203}, COSFloat{1.0},
> COSFloat{0.824905}]}) }
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDColorSpaceFactory.createColorSpace(PDColorSpaceFactory.java:159)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDColorSpaceFactory.createColorSpace(PDColorSpaceFactory.java:78)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDColorSpaceFactory.createColorSpace(PDColorSpaceFactory.java:62)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDICCBased.getAlternateColorSpaces(PDICCBased.java:291)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDICCBased.createColorSpace(PDICCBased.java:154)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace.getJavaColorSpace(PDColorSpace.java:85)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDDeviceN.createColorSpace(PDDeviceN.java:124)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace.getJavaColorSpace(PDColorSpace.java:85)
> {code}
> There are several causes: (1) in PDICCBased.createColorSpace() the variable
> numberOfComponents is -1; (2) the exception is not caught correctly. Both are
> fixed in the 2.0 version but not in the 1.8 version. Because the exception
> isn't caught correctly, the alternate color space is to be used. (3) The
> implementation of getAlternateColorSpaces() (that part existed before it
> became an apache project) thinks that this is an array of colorspaces.This
> {code}
> [/Lab<</BlackPoint[0.0 0.0 0.0]/Range[-128.0 127.0 -128.0
> 127.0]/WhitePoint[0.964203 1.0 0.824905]>>]
> {code}
> is considered an array of two colorspaces. This is contrary to the spec,
> which mentions "An alternate colour space". I will fix the bug without
> changing the API in 1.8, but will change the API in 2.0, which will be
> {code}
> public PDColorSpace getAlternateColorSpace() throws IOException
> {code}
> instead of
> {code}
> public List<PDColorSpace> getAlternateColorSpaces() throws IOException
> {code}
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