1673502 - Ensure MediaSession Delegate.onActivated is always dispatched first

Status: RESOLVED FIXED

(GeckoView :: Media, enhancement, P1)

Description

[Eugen Sawin [:esawin]]

Currently, the MediaSession delegate does not ensure the order of events dispatched, which may result in events like onPlay to be dispatched before onActivated.

Generally, the order of events should be controlled by Gecko, however, in the case of onActivated, this has some unwanted side effects for the integration of the GV API with A-C media components.

Let's explore a solution to at least ensure that onActivated is dispatched first.

Comment 1

[Eugen Sawin [:esawin]]

Is there a reason for Gecko's MediaController to dispatch playback and metadata events explicitly before the activated event?

For now, we can work around this by synthesizing an onActivated event in GV for each (non-fullscreen) event called on an inactive media session, but it seems odd that Gecko doesn't dispatch them in the expected order.

Comment 2

[Eugen Sawin [:esawin]]

Attachment: Bug 1673502 - [1.0] Ensure onActivated is called first on an inactive media session.

Comment 3

[Alastor Wu [:alwu]]

Thank for letting me know, will fix that in bug1673509.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/3cab705ee635
[1.0] Ensure onActivated is called first on an inactive media session. r=geckoview-reviewers,agi

Comment 5

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/3cab705ee635

Comment 6

[Chris Peterson [:cpeterson]]

Moving some media bugs to the new GeckoView::Media component.