[Mapserver-users] JPEG input

[Ed McNierney]

Jan -

No, you need to eliminate the two different JPEG libraries from the build.  In your case, that means modifying the GD build to link with the GDAL JPEG library.

	- Ed

-----Original Message-----
From: Jan Hartmann [mailto:jhart at frw.uva.nl]
Sent: Wednesday, April 02, 2003 8:28 AM
To: Ed McNierney
Cc: mapserver-users at lists.gis.umn.edu
Subject: Re: [Mapserver-users] JPEG input


I did that too! I commented out the three lines for JPEG support in 
MapServer's Makefile.vc, but the result was the same.

Jan

Ed McNierney wrote:
> Jan -
> 
> Please forgive my incomplete recollection, but I ran into this same problem a long time ago.  It appears that the JPEG library inside GDAL is built slightly differently than the default jpeg-6b library (although it's the same version), and the two are not compatible.  I suspected it was a structure packing/alignment issue (i.e. the files are the same but they're compiled differently).  I decided not to look into it and simply use the JPEG support from GDAL and remove the jpeg-6b library from my build.  That fixed the problem.
> 
> 	- Ed
> 
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA  01863
> ed at topozone.com
> (978) 251-4242 
> 
> -----Original Message-----
> From: Jan Hartmann [mailto:jhart at frw.uva.nl]
> Sent: Wednesday, April 02, 2003 6:19 AM
> To: mapserver-users at lists.gis.umn.edu
> Subject: [Mapserver-users] JPEG input
> 
> 
> Hello,
> 
> I'm trying to display a jpeg input image and get the following error 
> message:
> 
> JPEG parameter struct mismatch: library thinks size is 432, caller 
> expects 464
> 
> Platform: Win2000, VC++
> Mapserver: CVS, compiled with and without JPEG input support (jpeg-6b)
> GD: 2.0.11, compiled with jpeg-6b
> GDAL: 1.1.8
> 
> I diffed the jpeg files under GDAL with the jpeg-6b distribution and 
> found no differences. Yet there seems to be a version mismatch 
> somewhere. Outputting JPEG is no problem. Has anyone any ideas?
> 
> Jan
> 
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> Mapserver-users at lists.gis.umn.edu
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> 

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