CODEWITHSUNDEEP
clinuxgtkgtk2gdkpixbuf
Reza
Reza

Reputation: 398

Loading the thumbnail inside an image file into a pixbuf

Photos from cameras contain a thumbnail and the photo itself. The thumbnail is created and used by the cameras to browse quickly without loading the full image.

I would like to mimic such behavior with C and Gtk+ 2.

Tools such as exiftool or dcraw can extract the thumbnail into a new file. However, I would like to load the thumbnail directly into a GdkPixbuf instead.

If there any function to extract the thumbnail already existing in photo and load it into GdkPixbuf?

Upvotes: 0

Views: 427

Answers (2)

Ray
Ray

Reputation: 21

No

The loading of images is via pixbuf loaders so if you have a nef or cr2, you have to provide a loader to handle these types of files

The way I have implemented this is to build my own pixbuf loader and use exiv2 to obtain the embedded preview image (a tif or jpg) and then let the standard pixbuf loaders load that

Upvotes: 1

ntd
ntd

Reputation: 7434

There are many ways but not an official™ one.

If you do not want to lose yourself in the EXIF details you can leverage eog (Eye of GNOME): under the wood it is mainly a C library.

Link your app to that library and call eog_thumbnail_load on your EogImage object.

Upvotes: 1

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