[Poppler-bugs] [Bug 66928] 100% CPU usage

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66928

--- Comment #9 from Thomas Freitag <Thomas.Freitag at alfa.de> ---
Created attachment 82478
  --> https://bugs.freedesktop.org/attachment.cgi?id=82478&action=edit
cache cms transformed values for images

The patch assumes that the colortransformation from RGB to RGB is somewhat
linear, but the result is quite simular (at least in this case), and the
perfomance increase is dramatically:

thomas at w7-thomas:~/Entwicklung/xpdfmerge/thread/poppler$ time ./utils/pdftoppm
-cropbox -png bugzilla/66928.open/Lezione11-ASS.pdf output/lezval

real    0m20.094s
user    0m19.993s
sys    0m0.052s

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