Add missing screen_get_image() method implementation to Wayland

[LiminaWayfarer]

Describe the project you are working on

A streaming app to make custom overlays on Linux.

Describe the problem or limitation you are having in your project

To make more complex scenes and overlays, I want to be able to embed my screen in the scene by capturing it. As I am on Linux and using Wayland, as I understand it that's not possible currently.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Currently, the screen_get_image() method is not implemented on Wayland specifically, which prevents me from capturing my screen.
As it stands, I cannot use that feature at all since switching to and X11 session for this particular app, and having to stream from said session, is not really an option.

If this enhancement will not be used often, can it be worked around with a few lines of script?

Unfortunately not.

Is there a reason why this should be core and not an add-on in the asset library?

screen_get_image() is a functionality in core, it would be odd to need an addon for it to function under Wayland.

As a side note, if this not the correct place, I apologize - this is my first time submitting 😅

[bruvzg]

On Wayland, it is impossible to directly capture screen image, but user-interactive screen capture can implement using org.freedesktop.portal.ScreenCast interface and PipeWire, which will prompt user for recording permission.

[LiminaWayfarer]

I'm aware of those options, but as far as I've been reading on them, implementing Pipewire and XDG portals as an addon, on my own, just to make screen capture work in a project, is quite complex and a bit far off my current skillset.
Plus, while it would work as an addon, it's still missing as a feature on Wayland, which seems to be increasingly adopted in major linux distros - so eventually, X11 would not really be an option, barring most Linux users from using that method 😕

I do understand that this is a very niche use case, so I don't expect it to receive much attention, especially since it would then need to be maintained - but I figured I'd at least get the conversation going.