The patterns have XStep and YStep of 2876... so at 300dpi (which is
about 4x the default) a pattern image would be created that would have a
size of (2876 * 4)^2 = 132342016. If this is an ARGB image, it would
take 529 368 064 bytes, i.e. 1/2 gigabyte.
Detecting these is tricky... I think one would have to create a dummy
tool, that doesn't create images but only calculates the size.
Tilman
Am 03.07.2018 um 21:46 schrieb Esteban R:
Hello.
I get an OutOfMemoryError when running the following command:
java -Xmx2g -jar pdfbox-app-2.0.11.jar PDFToImage -dpi 300 pattern_issue_oom.pdf
(Windows 10, java version "1.8.0_112")
The file is available here:
http://www.filedropper.com/patternissueoom
It is a simplification of a real life pdf and it contains nested patterns. It
is really small: 4429 bytes.
Is this the expected memory usage for this pdf? Can I expect some improvements
in pdfbox?
Can I somehow detect this kind of pdfs and avoid rendering (i.e.: with the
PDFBOX api)?
Exception details:
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:75)
at java.awt.image.Raster.createPackedRaster(Raster.java:467)
at
java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1032)
at java.awt.image.BufferedImage.<init>(BufferedImage.java:333)
at
org.apache.pdfbox.rendering.TilingPaint.getImage(TilingPaint.java:143)
at org.apache.pdfbox.rendering.TilingPaint.<init>(TilingPaint.java:103)
at
org.apache.pdfbox.rendering.TilingPaintFactory.create(TilingPaintFactory.java:59)
at org.apache.pdfbox.rendering.PageDrawer.getPaint(PageDrawer.java:323)
at
org.apache.pdfbox.rendering.PageDrawer.getNonStrokingPaint(PageDrawer.java:679)
at org.apache.pdfbox.rendering.PageDrawer.fillPath(PageDrawer.java:748)
at
org.apache.pdfbox.contentstream.operator.graphics.FillNonZeroRule.process(FillNonZeroRule.java:36)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:848)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:503)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processTransparencyGroup(PDFStreamEngine.java:238)
at
org.apache.pdfbox.rendering.PageDrawer.access$1600(PageDrawer.java:103)
at
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:1618)
at
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:1497)
at
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:1437)
at
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:66)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:848)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:503)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processTilingPattern(PDFStreamEngine.java:401)
at
org.apache.pdfbox.rendering.PageDrawer.drawTilingPattern(PageDrawer.java:284)
at
org.apache.pdfbox.rendering.TilingPaint.getImage(TilingPaint.java:177)
at org.apache.pdfbox.rendering.TilingPaint.<init>(TilingPaint.java:103)
at
org.apache.pdfbox.rendering.TilingPaintFactory.create(TilingPaintFactory.java:59)
at org.apache.pdfbox.rendering.PageDrawer.getPaint(PageDrawer.java:323)
at
org.apache.pdfbox.rendering.PageDrawer.getNonStrokingPaint(PageDrawer.java:679)
at org.apache.pdfbox.rendering.PageDrawer.fillPath(PageDrawer.java:748)
at
org.apache.pdfbox.contentstream.operator.graphics.FillNonZeroRule.process(FillNonZeroRule.java:36)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:848)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:503)
Esteban Ruiz
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