D26648: Improved quality of JPEG thumbnails

[Christoph Feck]

cfeck added a comment.


  Did you time a performance difference? I think the idea was to get the downscaled result as fast as possible, by using integer IDCT instead of float IDCT, and by using only the DC coefficient instead of performing the IDCT at all for scale factors <= 1/8.

REVISION DETAIL
  https://phabricator.kde.org/D26648

To: chroniceel, broulik, #frameworks, #vdg
Cc: cfeck, bruns, ngraham, kde-frameworks-devel, kfm-devel, pberestov, iasensio, fprice, LeGast00n, MrPepe, fbampaloukas, alexde, GB_2, Codezela, feverfew, meven, michaelh, spoorun, navarromorales, firef, andrebarros, emmanuelp, mikesomov
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