1912778 - Missing device list changes once camera backend is initialized

Status: RESOLVED FIXED

(Core :: WebRTC: Audio/Video, defect)

Description

[Jan Grulich]

With the introduction of PipeWire camera backend we introduced "initialized" state of the camera backend. We could assume with V4L2 the backend is always initialized, but with PipeWire the initialization can go through a permission dialog and therefore we can only intialize it with the right permission. After the backend is initialized, we re-create DeviceInfo (class providing information about camera devices) as with the PipeWire backend we might end up before just with DeviceInfo providing a placeholder device. Once this DeviceInfo is re-created, we now miss to register callback for changes in the device list as this happens only in the VideoEngine initialization.

Comment 1

[Jan Grulich]

Attachment: Bug 1912778 - Always register video input feedback for newly created DeviceInfo r=pehrsons

Make sure to always register video input feedback when a new DeviceInfo
is created. There is now just one place where DeviceInfo gets created
and the logic for video input feedback registration has been moved to
VideoEngine as it's the only place where we now when a new DeviceInfo is
created.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:jib, could you have a look please?

For more information, please visit BugBot documentation.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a05909b43a51
Always register video input feedback for newly created DeviceInfo r=pehrsons

Comment 4

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/a05909b43a51