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https://issues.apache.org/jira/browse/PDFBOX-994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13017329#comment-13017329
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Andreas Romeyke commented on PDFBOX-994:
----------------------------------------
To fix the CMYK to RGB conversion, what kind of help would be useful?
Primarily I am not an Java developer, but if you point me to the related
functions I could try to fix that.
Here is my code snippet calling convertToImage(), could it be help to reproduce
the exception (on my system (64 bit, Debian, Linux) it is reproducable)?
/** converts a single page PDF (as stream) to BMP (as stream) */
public byte[] page_convert_to_bmp (byte[] pdfblob) {
byte[] res = null;
PDFData pdfdata = this.get_pdfdata( pdfblob);
PDPage page = pdfdata.getPage();
BufferedImage img = null;
try {
img = page.convertToImage(BufferedImage.TYPE_INT_RGB,
300);
//img = page.convertToImage();
} catch (IOException e) {
System.err.println(e.getLocalizedMessage());
}
res = buffered_image_to_bmp_blob (img);
this.clean_pdfdata(pdfdata);
pdfdata = null;
System.err.println("called page_convert_to_bmp");
return res;
}
I am using this java-engine:
$> /usr/lib/jvm/java-6-sun/bin/java -version
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)
And this compiler:
$> /usr/bin/javac -version
javac 1.6.0_24
> some colors (HKS colors) not in target image when calling
> org.apache.pdfbox.pdmodel.PDPage.convertToImage()
> -----------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-994
> URL: https://issues.apache.org/jira/browse/PDFBOX-994
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.1.0, 1.5.0, 1.6.0
> Environment: Debian Squeeze
> Reporter: Andreas Romeyke
> Attachments: Test_PDFBox.pdf, Test_PDFBox.png
>
>
> Hello,
> I am calling convertToImage() with a multicolored, standard PDF-file and the
> resulting image does not contain the content of some colored stuff.
> An example of such a PDF-file (v1.4) could be sent...
> The same problem occurs in 1.5/1.4 and previous..., I 've also used the
> bleeding edge from repository (2011-04-04), the problem still exists.
> Additionally, the following trace will be printed:
> 04.04.2011 15:35:07 org.apache.pdfbox.util.PDFStreamEngine processOperator
> WARNUNG: java.lang.ClassCastException: org.apache.pdfbox.cos.COSFloat cannot
> be cast to org.apache.pdfbox.cos.COSInteger
> java.lang.ClassCastException: org.apache.pdfbox.cos.COSFloat cannot be cast
> to org.apache.pdfbox.cos.COSInteger
> at
> org.apache.pdfbox.pdmodel.common.function.PDFunctionType2.eval(PDFunctionType2.java:81)
> at
> org.apache.pdfbox.pdmodel.graphics.color.PDSeparation.calculateColorValues(PDSeparation.java:238)
> at
> org.apache.pdfbox.util.operator.SetNonStrokingSeparation.process(SetNonStrokingSeparation.java:68)
> at
> org.apache.pdfbox.util.operator.SetNonStrokingColor.process(SetNonStrokingColor.java:93)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:551)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:274)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
> at
> org.apache.pdfbox.util.operator.pagedrawer.Invoke.process(Invoke.java:130)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:551)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:274)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
> at
> org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:225)
> at org.apache.pdfbox.pdfviewer.PageDrawer.drawPage(PageDrawer.java:107)
> at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:722)
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