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https://issues.apache.org/jira/browse/XGC-55?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luis Bernardo updated XGC-55:
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Fix Version/s: (was: --)
Trunk
> Significant slowdown in PNG and TIFF processing with xmlgraphics 1.4
> --------------------------------------------------------------------
>
> Key: XGC-55
> URL: https://issues.apache.org/jira/browse/XGC-55
> Project: XMLGraphicsCommons
> Issue Type: Bug
> Components: image writer
> Affects Versions: 1.4
> Environment: Operating System: All
> Platform: PC
> Reporter: OSC Member
> Assignee: XML Graphics Project Mailing List
> Fix For: Trunk
>
> Attachments: KOComponentColorModel.png, logo_rf.png, testicc.tar.gz
>
>
> Hello,
> I’m using fop 1.0 (xmlgraphics 1.4) to generate PDF, I noticed that PDF
> generation with PNG or TIF image is 7 times longer.
> The problem doesn't appear in the version 1.3 of xmlgraphics.
> The problem seems to come from color model associated with the image.
> * if is_sRGB_stdStale = true then getRBG method is very fast
> * if is_sRGB_stdStale = false then getRBG is slow because the treatment is
> delegated to ICC_ColorSpace.toRGB
> The color model is correct, but it is modified by the class
> org.apache.xmlgraphics.image.loader.impl.imageio.ImageLoaderImageIO
> by the following code :
> if (providerIgnoresICC && cm instanceof ComponentColorModel) {
> // Apply ICC Profile to Image by creating a new image with a
> new color model.
> ICC_Profile iccProf = tryToExctractICCProfile(iiometa);
> if (iccProf != null) {
> ColorModel cm2 = new ComponentColorModel(
> new ICC_ColorSpace(iccProf), cm.hasAlpha(), cm
> .isAlphaPremultiplied(), cm
> .getTransparency(), cm.getTransferType());
> WritableRaster wr = Raster.createWritableRaster(imageData
> .getSampleModel(), null);
> imageData.copyData(wr);
> BufferedImage bi = new BufferedImage(cm2, wr, cm2
> .isAlphaPremultiplied(), null);
> imageData = bi;
> cm = cm2;
> I removed this code and it works fine now, but it's dirty. What's the impact ?
> Until a fix, best regards.
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