[Bug 191288] New: CRC error in chunk zTXt

https://bugs.kde.org/show_bug.cgi?id=191288

           Summary: CRC error in chunk zTXt
           Product: digikam
           Version: 0.10.0
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           0.10.0 (using KDE 4.2.2)
Compiler:          gcc 4.3.3
OS:                Linux
Installed from:    Ubuntu Packages

If I load a RAW (with metadata) in digikam, save it as a PNG and test it with
pngcheck (2.0.0), this is what I get: "CRC error in chunk zTXt (actual
d550028e, should be f690a1e1)".

Note that:
* this occours always (with digikam-converted PNGs)
* I don't know if it's the same with other image formats
* digikam reads its PNG's metadata just right

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Metadata




--- Comment #1 from Gilles Caulier <caulier gilles gmail com>  2009-05-01 23:31:49 ---
Use last Exiv2 0.18.1 with digiKam/libkexiv2 and try again...

Gilles Caulier

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--- Comment #2 from  <gegio0 gmail com>  2009-05-02 15:29:53 ---
I've tried but nothing changes.

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--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2009-05-02 16:10:44 ---
CRC is computed and set by Exiv2 library, not digiKam directy. Can you
reproduce it when you change something in PNG using Exiv2 command line tool ?

Gilles Caulier

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--- Comment #4 from  <gegio0 gmail com>  2009-05-02 17:07:46 ---
Yes, I was able to reproduce it (I've used this command: exiv2 -M"set
Exif.Photo.UserComment charset=Ascii New Exif comment" no_metadata.png).

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--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2009-05-02 17:10:53 ---
Well, it's a bug in Exi2 PNG image parser...

Gilles

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--- Comment #6 from  <gegio0 gmail com>  2009-05-02 17:15:01 ---
Thank you for your help.

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--- Comment #7 from Andreas Huggel <ahuggel gmx net>  2009-05-03 02:05:08 ---
Can you please attach the image no_metadata.png here, or better, open an issue
for Exiv2 with the same instructions and image to reproduce the problem at
http://dev.exiv2.org/projects/exiv2/issues

Thanks,
Andreas

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--- Comment #8 from  <gegio0 gmail com>  2009-05-03 10:39:11 ---
I've opened an issue for exiv2 with the two images.
I think that this bug can now be closed.

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--- Comment #9 from Gilles Caulier <caulier gilles gmail com>  2009-06-12 14:10:54 ---
Exiv2 file open here : http://dev.exiv2.org/issues/show/630

Gilles Caulier

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED




--- Comment #10 from Gilles Caulier <caulier gilles gmail com>  2009-06-14 18:07:35 ---
See my comment in : http://dev.exiv2.org/issues/show/638

Exiv2 r1818 fix the problem.

Gilles Caulier

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