Re^2: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries)

Going back to the original post, there does appear to be a bug in the GIF reader in PDF::API2, which causes it to decompress larger size GIF files incorrectly. I managed to trace through and fix it for my project. The relevant library file GIF.pm, version 2.0, 2005/11/16 contains an error in line 135. The patch is as follows:

C<<
 135c135
 <         $bits++ if($nextcode == (1<<$bits));
 ---
 >         $bits++ if($nextcode == (1<<$bits) and $bits<12);
>>
[download]

I will submit this bug/fix to the package maintainer but in the meantime this post should help people who are stuck get their program working again.

Comment on Re^2: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries) Download Code

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Re^3: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries) by MidLifeXis (Monsignor) on Apr 30, 2010 at 16:30 UTC
When generating submitting your patch, can you generate a .t file as well that exhibits the incorrect behavior in the original, but not the patched version. Not certain how you would do this, but there may be an example in the source .t files. --MidLifeXis	[reply]
Re^4: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries) by zwon (Abbot) on Apr 30, 2010 at 17:45 UTC
there may be an example in the source .t files. JFYI, PDF::API2 test suite contains one file and it is called `t/00use.t` :)	[reply] [d/l]
Re^5: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries) by MidLifeXis (Monsignor) on May 01, 2010 at 10:41 UTC
Eww, eww, eww, eww, eww, eww, eww. Thanks for the FYI. Once more, eew. --MidLifeXis	[reply]
Re^3: Including GIF image into PDF (using GD::Graph and PDF::API2 libraries) by Anonymous Monk on Jun 18, 2013 at 15:24 UTC
thanks a lot. works for me also.	[reply]