[Gdal-dev] Problems with loading JPEGs using GDAL

Pool marisap at telkomsa.net
Tue May 11 01:56:38 EDT 2004


Yeah, thanks Ben!

Louis.

-----Original Message-----
From: gdal-dev-admin at remotesensing.org
[mailto:gdal-dev-admin at remotesensing.org]On Behalf Of Chapman, Martin
Sent: 11 May 2004 12:40
To: gdal-dev at remotesensing.org
Subject: RE: [Gdal-dev] Problems with loading JPEGs using GDAL


That is good to know...thanks for fixing that Ben.

Martin

-----Original Message-----
From: Ben Discoe [mailto:ben at vterrain.org] 
Sent: Monday, May 10, 2004 4:02 PM
To: gdal-dev at remotesensing.org
Subject: RE: [Gdal-dev] Problems with loading JPEGs using GDAL



The 'GDAL1.2.0 WIN32 Binaries' were originally not configured for JPEG
support; i know because i built them and host them.

I noticed this a couple weeks ago, and re-built GDAL with JPEG support
enabled.  It was very hard; as soon as i linked to libjpeg.lib then a
host of nasty crashes occurred with interdependencies in the various C
stdlib versions.

It took several days, but i finally solved the problems, in part by
re-building libjpeg myself.

The file 'gdal-120-ntbin.zip' currently hosted is dated 2004/4/28 and
includes JPEG support.  If JPEGs are not working for you, it's possible
that you have the older binaries, just grab the latest.

-Ben

> -----Original Message-----
> From: Frank Warmerdam
> Sent: Monday, May 10, 2004 5:45 PM
> 
> Fam. Pool wrote:
> > Hi all,
> > 
> > I've been having issues loading JPEG rasters via GDAL -
> > GDAL reports that the file format is not supported. All
> > other file formats seem to work though. I'm using the
> > GDAL1.2.0 WIN32 Binaries - downloadable from
> > www.remotesensing.org/gdal/
> 
> Louis,
> 
> Could you provide a smallish JPEG file in a bug in bugzilla?
> 
> There may well be a problem with files being opened in text
> mode or something in the libjpeg code.  This would cause lots
> of files to crap out on windows.

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