[cl-pdf-devel] pdf::read-jpeg-file

[Patrick Stein]

Are you trying this on Windows?  I had no problem reading this file with cl-pdf from the current quicklisp distribution under MacOSX.  I see some places it could signal 'image-file-parse-error, but not EOF.

… Patrick

On Sep 10, 2012, at 11:50 AM, Andrew Philpot wrote:

> Running cl-pdf 2.1 (although the source tag says pdf::*version* = 2.03)
> 
> I have a legacy cl-pdf application which embeds JPG files into the pdf
> documents.  I've noticed that more and more JPGs that I encounter are
> not accessible via PDF::READ-JPEG-FILE, that is, the underlying
> PDF::%READ-JPEG-FILE% signals an EOF due to not recognizing some
> marker byte. I'm guessing this is due to new camera capabilities or
> new metadata from various image processing software; and I suppose
> that PDF::%READ-JPEG-FILE% didn't anticipate some legal segment(s) in
> the file.
> 
> My current workaround is to run exiftool -all= <file> to drop all EXIF
> metadata.  But I was wondering whether anyone has a patch to the JPG
> reader, or has the expertise to look at this and the JPG specs and
> ascertain what is going on.
> 
> A sample non-readable image is available at
> http://www.isi.edu/~philpot/qh2012/original.jpg
> 
> Thanks!
> 
> -- 
> Andrew Philpot
> andrew.philpot at gmail.com
> 
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