RSS/Atom feed Twitter
Site is read-only, email is disabled
  1. Chat
  2. Useful links
  3. Polls

Featured content

Exif support for tiff files

This discussion is connected to the gimp-developer-list.gnome.org mailing list which is provided by the GIMP developers and not related to gimpusers.com.

This is a read-only list on gimpusers.com so this discussion thread is read-only, too.

3 of 4 messages available
Toggle history

Please log in to manage your subscriptions.
Exif support for tiff files Sebastian Kraft 17 Mar 20:42
  Exif support for tiff files Sven Neumann 17 Mar 21:39
1237323904.21878.14.camel@b... 07 Oct 20:27
  Exif support for tiff files Sebastian Kraft 17 Mar 22:09
Sebastian Kraft
2009-03-17 20:42:29 UTC (over 15 years ago)

Exif support for tiff files

Hello everybody,

I started to look into source code to see how much work it would be to implement exif support for Tiff files. Currently it's very annoying that gimp skips exif information from tiff files I created with a RAW converter...

The main question is now what happens to the file plugins when GIMP is ported to gegl... Will the file plugins be rewritten? So it would not make much sense for me to work on exif support now...

What are the plans?

Regards, Sebastian

Sven Neumann
2009-03-17 21:39:19 UTC (over 15 years ago)

Exif support for tiff files

Hi.

On Tue, 2009-03-17 at 20:42 +0100, Sebastian Kraft wrote:

I started to look into source code to see how much work it would be to implement exif support for Tiff files. Currently it's very annoying that gimp skips exif information from tiff files I created with a RAW converter...

The main question is now what happens to the file plugins when GIMP is ported to gegl... Will the file plugins be rewritten? So it would not make much sense for me to work on exif support now...

It's definitely not a waste to add EXIF support to the GIMP plug-in now. When we finally port the file loading to GEGL, we will also port that code then.

Sven

Sebastian Kraft
2009-03-17 22:09:54 UTC (over 15 years ago)

Exif support for tiff files

On Dienstag, 17. März 2009 22:05:04 you wrote:

Hi,

On Tue, 2009-03-17 at 21:55 +0100, Sebastian Kraft wrote:

I saw in file-jpeg/jpeg.c that EXIF data simply is read into ExifData struct via a libexif function. This only keeps EXIF from jpeg -> jpeg because there is no global ExifData to store exif information during editing.

So what would you propose how to transfer exif data from one filetype to another? Where to add something like a global EXIF data struct?

You missed some important bits then. The EXIF data is attached to the image as "exif-data' parasite. This is used by other file plug-ins as well. There is also ongoing work to replace this by a more general "gimp-metadata" parasite, but this is not finished.

Oh Thats what I missed... Thanks so far. I will take a deper look and try to work on this

Sebastian