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https://issues.apache.org/jira/browse/PDFBOX-2057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13993094#comment-13993094
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Tilman Hausherr commented on PDFBOX-2057:
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I added code to check that the masks have a certain amount of different colors
- this way we can detect if a mask is black after a modification. I can't check
for identity between the alpha values I set in the test and the values within a
BufferedImage.TYPE_BYTE_GRAY because the raster values and the RGB values are
not identical, the RGB values are calculated by java somehow. This was done in
rev 1593414 for the trunk and rev 1593416 for the 1.8 branch.
> Importing BufferedImage into PDPixelMap is broken in 1.8.5
> ----------------------------------------------------------
>
> Key: PDFBOX-2057
> URL: https://issues.apache.org/jira/browse/PDFBOX-2057
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.8.5, 1.8.6
> Environment: windows vista / jdk 1.7.0_45
> Reporter: Michaël Michaud
> Assignee: Tilman Hausherr
> Labels: regression
> Fix For: 1.8.6, 2.0.0
>
> Attachments: CS-Convocation entretien signed.pdf, CS-Convocation
> entretien-IText.pdf, CS-Convocation entretien-PDFBox-with-workarround.pdf,
> CS-Convocation entretien-PDFBox.pdf, ImageFilterOp.java,
> differentBufferedImages.pdf, renderTransparentImage.zip
>
>
> Try to import a BufferedImage in a PDDocument with PDPixelMap
> BufferedImage with TYPE_4BYTE_ABGR works fine with PDFBox 1.8.4 (though, the
> pdf file contains instruction /ColorSpace /DeviceGray)
> BufferedImage with TYPE_4BYTE_ABGR produces an unreadable PDF with PDFBox
> 1.8.5 (though, the pdf file contains instruction /ColorSpace /DeviceRGB).
> Code used to demonstrate the problem is as follows (image has also been
> colored with some Graphics instructions to demonstrate that 1.8.4 is working)
> :
> {code}
> try {
> PDDocument doc = new PDDocument();
> PDPage page = new PDPage();
> doc.addPage(page);
> BufferedImage awtImage = new BufferedImage(100,100,
> BufferedImage.TYPE_4BYTE_ABGR);
> PDPixelMap ximage = new PDPixelMap(doc, awtImage);
> PDPageContentStream contentStream = new PDPageContentStream(doc,
> page);
> contentStream.drawXObject(ximage, 200, 200, 100, 100);
> contentStream.close();
> doc.save("C:\\Temp\\PDF\\test185_4babgr.pdf");
> } catch(COSVisitorException|IOException e) {
> e.printStackTrace();
> }
> {code}
> I also tried with a BufferedImage with TYPE_INT_ARGB but it throws an
> exception with PDFBox 1.8.4 and 1.8.5 :
> {code}
> Exception in thread "main" java.lang.IllegalArgumentException: Raster
> IntegerInterleavedRaster: width = 100 height = 100 #Bands = 1 xOff = 0 yOff =
> 0 dataOffset[0] 0 is incompatible with ColorModel ColorModel: #pixelBits = 8
> numComponents = 1 color space = java.awt.color.ICC_ColorSpace@1dc80063
> transparency = 1 has alpha = false isAlphaPre = false
> at java.awt.image.BufferedImage.<init>(BufferedImage.java:630)
> at
> org.apache.pdfbox.pdmodel.graphics.xobject.PDPixelMap.createImageStream(PDPixelMap.java:107)
> {code}
> My main purpose was to use a BufferedImage with a CMYK ColorSpace, but
> PDPixelMap seems to accept 1 component and 3 component ColorSpace only.
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