1520329 - Add simple infrastructure for opening a Picture in Picture window and cloning a video stream to it

Status: RESOLVED FIXED

(Toolkit :: Video/Audio Controls, enhancement, P1)

Description

[Mike Conley (:mconley) (:⚙️)]

Here's the general idea:

1. A content process in a browser tab hosts a <video> that the user wants to view in a PiP window
2. The user expresses that intent somehow (for now, this will be via a video element context menu item that's only displayed if PiP is enabled)
3. The parent process is alerted, and it opens up an alwaysOnTop window, which hosts a single <browser> element. That <browser> element must run in the same content process as the originating tab.
4. Privileged code in the content process of the originating tab is told about the new window (and underlying blank document) that's been made available to it. It creates a new <video> element for the new document, and sets its source to be a MediaStream from the original video.

That should be enough to start.

Comment 1

[:Gijs (he/him)]

Mike, can you prio this? :-)

Comment 2

[Mike Conley (:mconley) (:⚙️)]

Done, thanks!

Comment 3

[Mike Conley (:mconley) (:⚙️)]

Attachment: Bug 1520329 - Add messaging infrastructure for opening videos in a Picture in Picture window. r?felipe

Comment 4

[Mike Conley (:mconley) (:⚙️)]

https://treeherder.mozilla.org/#/jobs?repo=try&revision=0d9a174ce8e081cbe635b5fb8bd6e8c2de2c9c8d

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/519b52f60bb9
Add messaging infrastructure for opening videos in a Picture in Picture window. r=Felipe

Comment 6

[Oana Pop-Rus]

https://hg.mozilla.org/mozilla-central/rev/519b52f60bb9