avif support in gdk pixbuf

[dufoli]

it seems that libavif have a gdk pixbuf module :
https://github.com/AOMediaCodec/libavif/pull/182/files
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/merge_requests/76

build libavif with DAVIF_BUILD_GDK_PIXBUF=ON then build gdk-pixbuf then gdk-sharp and format will apear so I guess it is something doable with build chain.

[dsoronda]

This issue can be closed. GTK won't add support for AVIF or WebP as stated here : avif and webp

Just run apt install libavif-gdk-pixbuf in Ubuntu and your GTK# app should be able to open AVIF image (tested and it works).

And for webp run apt install webp-pixbuf-loader