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  ImageIO Progress Tracking  (Read 1826 times)
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Online kevglass

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« Posted 2005-06-16 07:49:24 »

Does anyone know how to track the progress of ImageIO loading images? I'd like to have a progress displayed as I load some fairly big images, however, I only seem to be able to get down to the granularity of images loaded/not loaded.

Any help appreciated,

Kev

Offline oNyx

JGO Coder


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« Reply #1 - Posted 2005-06-17 17:04:12 »

Never done anything like that... but this should be the right direction:

http://java.sun.com/j2se/1.4.2/docs/api/javax/imageio/event/IIOReadProgressListener.html

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Offline tom
« Reply #2 - Posted 2005-06-17 20:13:35 »

You could create a ByteCounterInputStream that counts how many bytes that have been read. It would give you a better granularity as long as ImageIO don't buffer up the whole file.

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Offline trembovetski

Senior Devvie




If only I knew what I'm talking about!


« Reply #3 - Posted 2005-06-19 05:15:12 »

Yes, this can   be easily done using the abovementioned IIOProgressListener.

Check out the IIO guide:
  http://java.sun.com/j2se/1.4.2/docs/guide/imageio/spec/apps.fm7.html#997167

Thanks,
  Dmitri
Java2D Team
Online kevglass

« JGO Spiffy Duke »


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Coder, Trainee Pixel Artist, Game Reviewer


« Reply #4 - Posted 2005-06-19 10:59:31 »

Super, never actually used the readers directly before, I've always just used ImageIO.read() which doesn't allow a progress listener.. would be nice if it did Smiley

Kev

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