3

Closed

Certain GIF files

description

It appears as though the decoder has issues with certain gif files. I've attached a few examples. Is there a problem with the GIFs in specific? Is there some way I can throw an exception rather than getting a blank for the image?

Closed Oct 20 2010 at 2:51 PM by malignate88

Fixed by LuigiRosso

comments

LuigiRosso wrote Sep 18 2010 at 10:06 PM

Posted a fix for the interlacing issue here:
http://www.luigirosso.net/post/1145649971/net-image-tools-gif-bug-fix

Trying to attach the changed source file here too...

t3rse wrote Feb 26 2010 at 6:58 PM

We were able to discover what was happening. There's a portion of the Gif Decoder code for interlaced GIFs that was not implemented correctly. A colleague of mine and I patched it up - I'll see if I can send you the source so you can diff it and apply the fix.

malignate88 wrote Feb 24 2010 at 7:16 AM

Hi,
I tested the gif decoder with a lot of images, but it seems that u found some, that dont work. Thx for this info. As far as I have time (end of next week) I will have a look.

About exception: Because of the images are loaded asynchronously it would help to throw an exception. But the ImageControl has an event called Loading Failed, which gives u information about the occured exception.

t3rse wrote Feb 23 2010 at 7:59 PM

this is an additional file that has an issue. The first has a background color of 255 when there are only 32 colors. Could that be a problem? This GIF however doesn't have that problem but still doesn't display in the ImageControl.

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