[Therion] Progressive coded JPG files??

[Bill Gee]

Martin asked if tkimg package is installed.  It is installed.  I suspect 
if it were not, then png files would also fail.

==================
bgee at main2:~$ rpm -qa | grep -i tkimg
tkimg-1.4.16-4.fc42.x86_64
=================

Wookey - Therion is apparently compiled against libjpeg-turbo.

==================
root at main2:~# ps ax | grep wish
  467595 ?        Ss     0:00 wish /usr/bin/xtherion 
/public/document/CaveSurveys/CaveSpringCave/thconfig

root at main2:~# lsof -p 467595 | grep -i jpe
lsof: WARNING: can't stat() fuse.portal file system /run/user/1000/doc
       Output information may be incomplete.
wish    467595 bgee  mem       REG                8,2    666168 
9437408 /usr/lib64/libjpeg.so.62.4.0

root at main2:~# rpm -q --whatprovides /usr/lib64/libjpeg.so.62.4.0
libjpeg-turbo-3.1.0-2.fc42.x86_64
===================

The error message is coming from a TCL program.  TCL is an interpreted 
script - not an ELF image.  I think the concept of "compiled against 
library xxx" does not apply here.  Something in that script is loading 
libjpeg, but I have no idea what it is or where it is called.

Looking through the source code - I see the error message is generated 
at line 737 in me_imgs.tcl.  Looking at the code around that line, I do 
not see anything suggestive.  The message is triggered when an object 
named $imgid is null (line 735), which means some earlier code is not 
recognizing the jpg file as valid.  Or perhaps not even trying to load it??

Looking at package descriptions - openjpeg is intended for JPEG 2000 
formats.  libjpeg-turbo is intended for general jpeg handling.


===============
Bill Gee

On 8/19/25 21:04, Wookey wrote:
> On 2025-08-19 08:25 -0500, Bill Gee wrote:
>> It appears that xTherion will no longer load ANY jpg file.
> 
>> The system is Fedora 42.  Therion is 6.3.4+dev, compiled back in 
>> April. I have several jpeg libraries installed:
>>
>> root at main2:~# rpm -qa | grep jpeg
>> libjpeg-turbo-3.1.0-2.fc42.x86_64
>> openjpeg-2.5.3-6.fc42.x86_64
>> turbojpeg-3.1.0-2.fc42.x86_64
>> openjpeg-tools-2.5.3-6.fc42.x86_64
>> libjpeg-turbo-utils-3.1.0-2.fc42.x86_64
>> libjpeg-turbo-devel-3.1.0-2.fc42.x86_64
>> openjpeg-devel-2.5.3-6.fc42.x86_64
>> jpeginfo-1.7.1-6.fc42.x86_64
>> jpegoptim-1.5.5-6.fc42.x86_64
>> mjpegtools-libs-2.2.1-8.fc42.x86_64
> 
> OK. Just checked on Debian 13 (stable released last week) and therion 
> will load jpegs OK there.
> 
> In case it helps:
> therion                                             
> 6.3.4-2                              amd64        Cave surveying - 2D 
> and 3D drawing software
> libjpeg-turbo-progs                                 
> 1:2.1.5-4                            amd64        Programs for 
> manipulating JPEG files
> libjpeg62-turbo:amd64                               
> 1:2.1.5-4                            amd64        libjpeg-turbo JPEG 
> runtime library
> libturbojpeg0:amd64                                 
> 1:2.1.5-4                            amd64        TurboJPEG runtime 
> library - SIMD optimized
> 
> So your libjpeg-turbo is 3.x whilst I have 2.x. Maybe that's 
> significant? I think libjpeg-turbo and openjpeg are alternatives. Check 
> which therion is using on your system. Mine is linked against 
> libjpeg.so.62 which comes from libjpeg62-turbo
> 
> Wookey
> 
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