[Bug 182737] New: album view is not updated after saving edited PNG files, not even after restart

[Anders Lund]

http://bugs.kde.org/show_bug.cgi?id=182737

           Summary: album view is not updated after saving edited PNG files,
                    not even after restart
           Product: digikam
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           0.10.0-rc2 (rev.: 917004) (using 4.2.00 (KDE 4.2.0), Arch
Linux)
Compiler:          gcc
OS:                Linux (x86_64) release 2.6.28-ARCH

This is grave, you do not really support PNG images as long as this is not
fixed.

Even after restarting digiKam, the album and its slideshow shows the old,
supposedly overwritten files. Where does it get them? Also, it looks like the
exif files have gone, but opening in the editor shows them. Are they there or
not?

I tried to export one of the images to flickr, an that at least exported the
new file. There is no exif data in the exported image, though, but that looks
like a separate bug. My guess is that the new PNG does have the exif data. But
it is a guess :(


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[Gilles Caulier-4]

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Gilles Caulier caulier gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Albums GUI
            Version|unspecified                 |0.10.0-rc2




--- Comment #1 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 16:28:18 ---
Anders,

I use PNG evertime in my RAW workflow to save as lossless image my corrected
photo.

PNG is certainly the better format supported in digiKam (in fact i'm a fan)

PNG save EXIF, IPTC and XMP.

Gilles Caulier


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[Anders Lund]

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--- Comment #2 from Anders Lund <anders alweb dk>  2009-02-01 16:34:21 ---
Hi Gilles,
I use PNG too, but it is quite frustrating because of the mysterious behavior.
It makes it difficult for me to know where I got to, and in some ways I can not
use my images, ie. I can not show them inside digikam after editing them. It
does not happen allways, but mostly, and I have not been able to establish a
pattern.
I convert from raw -> png, then I select an image, makes some adjustments,
save, press pgdown in editor. File saved, but digiKam mainwindow refuses to
realize that. I'm using trunk from today, but I had the same problem with the
latest release.


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--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 16:42:45 ---
What the messages from the console ?

Gilles Caulier


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--- Comment #4 from Anders Lund <anders alweb dk>  2009-02-01 17:04:48 ---
Here is a sample saving an image, it is not updated in digiKam:

digikam(15963)/digikam (core) Digikam::CollectionManager::locationForPath:
Testing location  1 "/home/anders/Pictures/RAW/2009-01-31"
"/home/anders/Pictures"                                                        
digikam(15963)/digikam (core) Digikam::DImgInterface::saveAs: Saving to :
/home/anders/Pictures/RAW/2009-01-31/H15963.digikamtempfile.tmp  ( "PNG" )      
digikam(15963)/KEXIV2 KExiv2Iface::KExiv2::setImagePreview: JPEG image preview
size: ( 1280  x  853 ) pixels -  120279  bytes                                  
digikam(15963)/KEXIV2 KExiv2Iface::KExiv2::setExifThumbnail: Thumbnail temp
file:  /tmp/kde-anders/digikamT15963KExiv2ExifThumbnail                        
digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= exif , length= 9287                                              
digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= iptc , length= 120344                                            
digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= xmp , length= 2728                                              
digikam(15963)/digikam (core) Digikam::AlbumManager::slotDirWatchDirty:
KDirWatch detected change at "/home/anders/Pictures/RAW/2009-01-31"            
digikam(15963)/digikam (core) Digikam::EditorWindow::slotSavingFinished:
renaming to
"/home/anders/Pictures/RAW/2009-01-31/2009-01-31T12:12:34-000086.png"          
digikam(15963)/digikam (core) Digikam::DImg::load:
"/home/anders/Pictures/RAW/2009-01-31/2009-01-31T12:12:34-000086.png"  : PNG
file identified
digikam(15963)/digikam (core) Digikam::ThumbnailCreator::loadImagePreview: Use
Exif/IPTC preview extraction. Size of image:  1280 x 853
digikam(15963)/KEXIV2 KExiv2Iface::KExiv2::getImageOrientation: Orientation =>
Exif.Image.Orientation =>  1
digikam(15963)/KDCRAW KDcrawIface::KDcraw::loadEmbeddedPreview: Failed to load
embedded RAW preview
digikam(15963) Digikam::ScanControllerLoadingCacheFileWatch::slotImageChanged:
34067 "/home/anders/Pictures/RAW/2009-01-31/2009-01-31T12:12:34-000086.png"
digikam(15963)/digikam (core) Digikam::PreviewLoadingTask::loadImagePreview:
Use Exif/IPTC preview extraction. Size of image:  1280 x 853
digikam(15963)/KEXIV2 KExiv2Iface::KExiv2::getImageOrientation: Orientation =>
Exif.Image.Orientation =>  1
digikam(15963)/KDCRAW KDcrawIface::KDcraw::loadEmbeddedPreview: Failed to load
embedded RAW preview
digikam(15963)/digikam (core) Digikam::PreviewLoadingTask::loadImagePreview:
Use Exif/IPTC preview extraction. Size of image:  1280 x 853
digikam(15963)/KEXIV2 KExiv2Iface::KExiv2::getImageOrientation: Orientation =>
Exif.Image.Orientation =>  1
digikam(15963)/digikam (core) Digikam::AlbumManager::slotDirWatchDirty:
KDirWatch detected change at "/home/anders/Pictures/RAW/2009-01-31"
timeChanged
void SunLocator::update()


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[Gilles Caulier-4]

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--- Comment #5 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 17:09:55 ---
Nothing special here. All is fine

Which Exiv2 library you use ?
Which libpng ?

Go to Help/components Info for details...

Can you send me in private by mail a corrupted PNG file ?

Gilles Caulier


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[Anders Lund]

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--- Comment #6 from Anders Lund <anders alweb dk>  2009-02-01 17:17:33 ---
Here is the component information:

digiKam version 0.10.0-rc2 (rev.: 917004)
Exiv2 can write to Jp2: No
Exiv2 can write to Jpeg: Yes
Exiv2 can write to Png: No
Exiv2 can write to Tiff: No
Exiv2 support XMP metadata: Yes
LibCImg: 129
LibExiv2: 0.17.1
LibJPEG: 62
LibJasper: 1.900.1
LibKDE: 4.2.00 (KDE 4.2.0)
LibKExiv2: 0.5.0
LibKdcraw: 0.4.0
LibLCMS: 117
LibPNG: 1.2.34
LibQt: 4.4.3
LibRaw: 0.6.9-Release
LibTIFF: LIBTIFF, Version 3.8.2 Copyright (c) 1988-1996 Sam Leffler Copyright
(c) 1991-1996 Silicon Graphics, Inc.
Marble widget: 0.7
LibGphoto2: 2.4.3
LibKipi: 0.3.0

The libraries are installed by archlinux, which should be resonably well up to
date.

I will send a png file in a moment, one that i edited but that was not updated
in the album view. The PNG file did appear to contain exiv data after
conversion, and after loading the changed file into the editor, the exif data
appears there too, also after restarting digiKam.

I can send too a file that have lost its exif data - after I did exactly the
same steps as with the others.


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--- Comment #7 from Andi Clemens <andi clemens gmx net>  2009-02-01 17:34:08 ---
I too use Archlinux, but as a dev I always have the latest libraries from trunk
of course.

Current Exiv2 is 0.18, but Arch delivers 0.17... this can be the reason.


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--- Comment #8 from Andi Clemens <andi clemens gmx net>  2009-02-01 17:36:20 ---
You can try to modify the /var/abs/extra/exiv2/PKGBUILD file and build your own
0.18 package. Maybe your problems will be gone.


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--- Comment #9 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 17:40:40 ---
Using Exiv2 0.17 is fine, but i recommend to use 0.18 : PNG metadata can be
written on the fly (like JPEG). Change Rating in albumgui, and PNG metadata
will be automatically adjusted (I have personally implemented PNG metadata
writting mode in Exiv2 library)

Gilles Caulier


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--- Comment #10 from Andi Clemens <andi clemens gmx net>  2009-02-01 17:43:05 ---
My Archlinux specs:

digiKam version 0.10.0-rc2
Exiv2 can write to Jp2: Yes
Exiv2 can write to Jpeg: Yes
Exiv2 can write to Png: Yes
Exiv2 can write to Tiff: Yes
Exiv2 support XMP metadata: Yes
LibCImg: 129
LibExiv2: 0.18
LibJPEG: 62
LibJasper: 1.900.1
LibKDE: 4.2.00 (KDE 4.2.0)
LibKExiv2: 0.6.0
LibKdcraw: 0.5.0
LibLCMS: 117
LibPNG: 1.2.34
LibQt: 4.4.3
LibRaw: 0.7.0-Alpha5
LibTIFF: LIBTIFF, Version 3.8.2 Copyright (c) 1988-1996 Sam Leffler Copyright
(c) 1991-1996 Silicon Graphics, Inc.
Marble widget: pre 0.7 SVN
LibGphoto2: 2.4.3
LibKipi: 0.4.0


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--- Comment #11 from Anders Lund <anders alweb dk>  2009-02-01 18:08:36 ---
The absolutely worst problem is that the digikam main view does not update the
images, after I save them using the editor. The old files are displayed in the
thumbnails, view and slideshow. Where does digikam cache them? Can I delete the
cache?

In fact I do not know what to do about it. If I rotate them in the main window,
they are updated but that is extremely slow, because that needs to load the
image. I consider trying to move the images away from digikam, and then
reimport them, but it is an absurd workaround. I hope it will work though,
since otherwise I do not know what to do.


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--- Comment #12 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 18:14:22 ---
I cannot see any similar problem on my computer.

- Cache is located to ~/.thumnails
- Which file system you use to host your collection ?
- Look in ~/.xsession-errors if error message appear.
- Use F5 in album GUI to refresh thumbs. It works ?

Gilles Caulier


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--- Comment #13 from Anders Lund <anders alweb dk>  2009-02-01 18:27:43 ---
I can try to remove .thumbs, but does digiKam cache images for the album view?
or use a preview?

My filesystem is jfs

There are many, many messages from digikam. I do not know what to look for, but
I did put a sample in this report, and the image saved in that sequence was
*not* updated.

F5 does cause digikam to clear and rebuild the thumbs, but it still uses the
overwritten image, where can it find that???????


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[Arnd Baecker]

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--- Comment #14 from Arnd Baecker <arnd baecker web de>  2009-02-01 18:39:22 ---
Anders, is maybe all this caused by:
> Exiv2 can write to Png: No
as you wrote in #c6 above? (Compare with Andi's specs in #c10)


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--- Comment #15 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 18:43:18 ---
Arnd,

no. if PNG is generated by editor, libpng is used and metadata are inserted in
PNG file by this way.

Exiv2 0.18 is able to writte PNG metadata ont the fly without to re-encode PNG
data as libpng do. This is the way used by Caption & Tags for example when you
apply comment, rating or keywords.

So, with editor, this is not the problem...

Gilles


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--- Comment #16 from Gilles Caulier <caulier gilles gmail com>  2009-02-01 18:44:56 ---
Arnd,

Look trace :

digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= exif , length= 9287
digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= iptc , length= 120344
digikam(15963)/digikam (core) Digikam::PNGLoader::writeRawProfile: Writing Raw
profile: type= xmp , length= 2728

Exif, Iptc and Xmp png metadata chunk are created properlly using libpng

Gilles


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--- Comment #17 from Anders Lund <anders alweb dk>  2009-02-01 18:46:46 ---
I can try to update libexiv2, that can not hurt at least. But how can that
cause the digikam main view to keep old, nonexisting files????


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--- Comment #18 from Anders Lund <anders alweb dk>  2009-02-01 19:50:58 ---
Moving or copying a changed PNG image inside digikam (to another album) does
not work, it insists on keeping the overwritten file. Kinda broken.


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--- Comment #19 from Anders Lund <anders alweb dk>  2009-02-01 19:53:56 ---
Could you please add a function that rereads the image file and updates
everything without doing any checks?


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