commit 40c3ea5c7146cb7ec2fa999143d702b8825b725f
author Jan Grulich <grulja@gmail.com> Wed Dec 02 08:02:52 2020
committer Commit Bot <commit-bot@chromium.org> Thu Dec 03 17:33:19 2020
tree 3878dc2f6b559506915f43345ac74b81b2ad9eb0
parent ead570c963d99f639a90bc9e267997cddef1db38

Improve screen sharing with PipeWire on Wayland

Changes:
1) Scoped class
This is a special class for GLib based objects which we need to manually
delete with different functions. Wrapping these objects into Scoped class
will destroy them automatically when they go out of scope.

2) Window sharing support
Unlike screen sharing, with window sharing we are required to obtain more
information from the PipeWire stream, like video crop metadata, which we
use to properly set size of our buffer.

3) Support for DmaBuf and MemFd buffer types
As of now, we expected the PipeWire stream will provide only plain data
which we just need to copy to our buffer. We now add support for new
buffer types, which are often preferred for better effeciency.

4) Minor bugfixes:
a) Additionally accept PipeWire streams using alpha channels (BGRA, RGBA)
b) Add lock over PipeWire loop to prevent potential issues until we fully
   intialize everything we need
c) When obtaining buffers, make sure we work with the latest one

Bug: chromium:682122
Change-Id: I64638d5dcbe18e7280550dca0b01b17c511ac98a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/194100
Commit-Queue: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#32763}