https://issues.apache.org/bugzilla/show_bug.cgi?id=51465
Bug #: 51465
Summary: Significant slowdown in PNG and TIFF processing with
xmlgraphics 1.4
Product: XMLGraphicsCommons
Version: 1.4
Platform: PC
Status: NEW
Severity: regression
Priority: P2
Component: Image codecs
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
Created attachment 27243
--> https://issues.apache.org/bugzilla/attachment.cgi?id=27243
Profiler
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.
--
Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
