[Digikam-devel] [Bug 132047] Faster display of images and/or prefetch wished for

[Gilles Caulier]

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http://bugs.kde.org/show_bug.cgi?id=132047         




------- Additional Comments From caulier.gilles kdemail net  2007-01-04 07:53 -------
Brad,

>Multithreading is great since I do have dual core.  But it still doesn't hold a candle to what >pre-decompress gets you or plain old faster jpeg decoding as you would get by just taking >the code of the other programs. 
 
No need to re-invent the wheel to take the code from other programs. The image loader implementation are very similar and cannot be optimized anymore. The ultimate optimization to do is to preload in background to the cache the next and previous image around the current selected image from current album. 

Kuickshow and digiKam image editor < 0.9 use this mechanism with imlib2 library. 

>What might make sense is to have two modes of full-size preview, one of which allows >more complex modifications to the image directly, and the other of which requires the >image be re-loaded before most pixel modifications (rotate and flip should be possible >without re-load since they can be done lossless on the file as in thumb mode.) 

This is out of context of this file. Please open a new wish.

Other optimizations to speed-up the drawing of pictures on the screen can be done using Qt4. No need to re-invent the wheel again...

Gilles Caulier