Currently, sharing a screen or a window on Wayland opens unnecessary
preview dialog on Chromium side, which is then followed by a similar
dialog on xdg-desktop-portal side. The Chromium dialog is useless on
Wayland, as it doesn't show anything. This is because Chromium doesn't
have access to screen content as in case of X11 session. To fix this, we
want to avoid showing the preview dialog in case we find that we run on
Wayland and only pick a screen or a window from the dialog that comes
from xdg-desktop-portal.
This patch splits BaseCapturerPipeWire class, moving portal related code
into XdgPortalBase, which does all the DBus communication and which is
supposed to be reused by BaseCapturerPipeWire when the user confirms
the dialog from xdg-desktop-portal. The XdgPortalBase is extended to
support multiple calls at once, where each call is identified by Id.
Relevant change on Chromium side will be in a different review.
Bug: chromium:682122
Change-Id: If8afd36da66231eb154cdc00114908ac897ee4cf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160649
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32342}
9b87037073