https://bugs.kde.org/show_bug.cgi?id=437706

            Bug ID: 437706
           Summary: Cannot open GIMP XCF files especially when color depth
                    is higher than 8 bits
           Product: frameworks-kimageformats
           Version: 5.82.0
          Platform: Other
                OS: Other
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: alex.me...@kde.org
          Reporter: digi...@911networks.com
                CC: aa...@kde.org, kdelibs-b...@kde.org
  Target Milestone: ---

SUMMARY
Cannot open GIMP XCF files especially when color depth is higher than 8 bits

as described by Gilles Caulier from Digikam

STEPS TO REPRODUCE
1. Open the following gimp image from Digikam

I cannot attach the file since it much larger than 4mb. Here's the link

https://www.sritch.com/pages/cares-20170212-6640.xcf  (96Mb)

OBSERVED RESULT (quote from Gilles Caulier)

..........................
Hi,

Yes problem is fully reproducible here. the Unit test from digiKam trying
to load image report a message from the KImageIO XCF plugin as file is not
recognized :

digikam.dimg: "cares-20170212-6640.xcf" : "QIMAGE" file identified
digikam.dimg.qimage: Can not load " "cares-20170212-6640.xcf" " using
DImg::DImgQImageLoader!
digikam.dimg.qimage: Error message from loader: "Unable to read image data"    
                         <=====!!!!!!!
digikam.dimg: "cares-20170212-6640.xcf" : Unknown image format !!!

This is a problem in the KDE plugin. The problem is the same for both
shared files.

Note  that Exiftool is able to load XCF metadata :

[gilles@localhost dimg]$ exiftool  cares-20170212-6640.xcf
ExifTool Version Number         : 12.00
File Name                       : cares-20170212-6640.xcf
Directory                       : .
File Size                       : 98 MB
File Modification Date/Time     : 2021:05:26 05:13:00+02:00
File Access Date/Time           : 2021:05:26 05:37:17+02:00
File Inode Change Date/Time     : 2021:05:26 05:37:05+02:00
File Permissions                : rw-r--r--
File Type                       : XCF
File Type Extension             : xcf
MIME Type                       : image/x-xcf
XCF Version                     : 12
Image Width                     : 4781
Image Height                    : 3586
Color Mode                      : RGB Color
Compression                     : RLE Encoding
X Resolution                    : 300
Y Resolution                    : 300
Tattoo                          : 2
Units                           : Inches
Metadata Tag Name               : Exif.Canon.0x0003
Metadata Tag                    : 0 0 0 0
Comment                         :
Image Size                      : 4781x3586
Megapixels                      : 17.1

So, please report this problem to KDE bugzilla component
"frameworks-kimageformats". Look like there are already some files open
about XCF support, and especially when color depth is higher than 8 bits.

https://bugs.kde.org/buglist.cgi?bug_status=UNCONFIRMED&bug_status=CONFIRMED&bug_status=ASSIGNED&bug_status=REOPENED&component=general&list_id=1874818&product=frameworks-kimageformats&query_format=advanced

Best

Gilles Caulier
.........................

SOFTWARE/OS VERSIONS
OS: Manjaro Linux x86_64 
Host: MS-7693 2.0 
Kernel: 5.10.36-2-MANJARO 
Uptime: 3 hours, 13 mins 
Packages: 1542 (pacman) 
Shell: bash 5.1.8 
Resolution: 2560x1080 
DE: Plasma 5.21.5 
WM: KWin 
WM Theme: Breeze 
Theme: Breath2 [Plasma], Breeze [GTK2/3] 
Icons: breath2 [Plasma], breath2 [GTK2/3] 
Terminal: konsole 
Terminal Font: Noto Mono 14 
CPU: AMD FX-8350 (8) @ 4.000GHz 
GPU: AMD ATI Radeon RX 470/480/570/570X/580/580X/590 
Memory: 1037MiB / 11992MiB 

Qt 5.15.2 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC
10.2.0) on "xcb" 
OS: Manjaro Linux [linux version 5.10.36-2-MANJARO]

Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX

Thank you

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