Screen sharing

[denisok]

https://wiki.archlinux.org/index.php/PipeWire#WebRTC_screen_sharing

https://github.com/emersion/xdg-desktop-portal-wlr
https://github.com/flatpak/xdg-desktop-portal

swaywm/sway#4358

https://pipewire.org/

[denisok]

I'm trying to get screen sharing working with xdg-desktop-portal-wlr and chromium. Chromium has the enable-webrtc-pipewire-capturer flag enabled. I installed pipewire (distro package) and compiled xdg-desktop-portal-wlr myself. When I go to the mozilla getUserMedia test page and click the Screen Capture button, chromium prompts me to choose what I want to share, but I see no screens or windows that I could share
03:56 When I click that button I do see pipewire, xdg-desktop-portal and xdg-desktop-portal-wlr start up, and they stay running successfully
03:56 There is no output from chromium that would indicate something is wrong. How can I debug this?
04:11 Actually, it looks exactly like https://bugs.chromium.org/p/chromium/issues/detail?id=1067113 The invisible window mentioned in step 7 is indeed there. And indeed I now see the wiki note says that Arch's Chromium needs libpipewire02, so it must be the same problem with my distro's package
05:53 Actually actually, my distro specifically patches chromium to compile with pipewire 0.3 instead of 0.2 using a patch that fedora also carries, and apparently screensharing is supposed to work with that patch. But that patch was broken until a few hours ago, heh
05:53 That was one heck of a merry-go-round

[agraul]

I think this is also related: https://www.reddit.com/r/swaywm/comments/hlwalf/question_why_was_rdp_removed_from_sway/ (swaywm/wlroots#1988)

Another piece of resource I found: https://soyuka.me/make-screen-sharing-wayland-sway-work/

[agraul]

I just saw that xdg-desktop-portal-wlr is on its way to Tumbleweed https://build.opensuse.org/request/show/820843

[denisok]

So I installed xdg-desktop-portal-wlr and it works. At least I can share current screen. If there are more screens, there is no choice to make.

Also sharing separate apps is not working.

[denisok]

swaywm/sway#5607
for systemd, and I would update profile.d to set it there as well.

[denisok]

Selecting output is the new feature here:
emersion/xdg-desktop-portal-wlr#12

[denisok]

So actually only thing that is need to be setup correctly is the XDG_SESSION_TYPE if sway starts from tty.
Graphical login managers, like GDM do set it correctly.

For tty this needs to be landed:
swaywm/wlroots#2304

[denisok]

https://build.opensuse.org/request/show/824519
submitted dependencies to the OBS.
XDG_SESSION_TYPE for the tty would be fixed upstream.