This lets us notify about a created TrackUnionStream track (and since it was
created, we can notify when it ends), even though it has been blocked from main
thread.
MozReview-Commit-ID: HyopzISBfbb
--HG--
extra : rebase_source : a3d676257473bba08190b8e2b24d027c42306621
extra : intermediate-source : 5454dcaa31ff8eb060b6f1531a376dcbc24ffb4d
extra : source : 690904309e169aa74f95163f0d796493ef882972
This lets us notify about a created TrackUnionStream track (and since it was
created, we can notify when it ends), even though it has been blocked from main
thread.
MozReview-Commit-ID: HyopzISBfbb
--HG--
extra : rebase_source : 55d6dd5d6a34a0b499b45e0b72f900fc37cff1bf
extra : source : 690904309e169aa74f95163f0d796493ef882972
Rename StreamBuffer to StreamTracks. We still need a place to keep the track information in every MediaStream, even the StreamBuffer::Track::mSegment is empty.
--HG--
rename : dom/media/StreamBuffer.cpp => StreamTracks.cpp
rename : dom/media/StreamBuffer.h => StreamTracks.h
It wasn't clear which TrackID should be passed to MediaInputPort::BlockTrackId(); source or destination.
MozReview-Commit-ID: I9LoSjdpRwE
--HG--
extra : rebase_source : 20eeb5e4ee47eb1cdf00e94cdc72ee11177bbee2
Not sure why this surfaced now. Include ordering must have changed.
MozReview-Commit-ID: 43eGMdVoycw
--HG--
extra : rebase_source : 5013c1bb93060ea593bca96fe84f3418ea1aefa3
Calculating a principal when adding a track is easy - just combine the new
track principal into the stream's principal.
When removing a track it's a bit trickier. The DOMMediaStream has to wait until
the MediaStreamGraph has removed the track from the underlying playback stream.
We do this by letting the MediaStreamGraph return a Pledge (single threaded
Promise) when blocking a track in a stream (the way we end removed tracks).
The pledge gets passed to the MediaStreamGraph and when the block has been
applied it is passed back to the main thread where it is finally resolved
and the DOMMediaStream may recompute its principal once all outstanding
track removals have been applied.
MozReview-Commit-ID: 3QP0YcDyfGf
--HG--
extra : rebase_source : 6642849ec1c7d774467395dee82b0a37fdd33a99
PrincipalHandle is a thread safe pointer to a holder of (the main-thread-only
nsIPrincipal) that can be passed around the MSG.
A MediaStreamTrack whose source has just updated its principal, sets the new
principal aside (as its "pending principal"), and combines the new principal
into its current principal.
Then the source starts passing the new principal to the MediaStreamGraph as
a PrincipalHandle.
Changes to a track's PrincipalHandle on the MSG will be surfaced through the
MediaStreamTrackListener API. These changes are dispatched to main thread
and compared to a MediaStreamTrack's pending principal. In case of a match
the track knows the correct principal is flowing and can move the pending
principal to be the current principal and update any main thread principal
observers.
MozReview-Commit-ID: D0JXGWhQFFU
--HG--
extra : rebase_source : 296e269bb46fc5a85a9c3f90dfc0dc40e53572bc
This so it can be shared between multiple tracks.
MozReview-Commit-ID: 3mjQImVY0f8
--HG--
extra : rebase_source : 9c8d11bb38e06a2cf5f7bf1c24ca657e28387682
This makes it consistent with PrincipalChangeObserver.
MozReview-Commit-ID: 91PtqFZRcW6
--HG--
extra : rebase_source : e39abb668be7fbd0dae0a701ec17b048c8761879
This let's us use FindOwnedDOMTrack before the TrackID in mOwnedStream
is known.
This is necessary for a stream clone with multiple tracks whose original
TrackID is the same.
MozReview-Commit-ID: J3OvbiNb8X
--HG--
extra : rebase_source : 25f2bddf07de99d187c5d546bfc5eac50b7d6295
This allows DOMMediaStream to assign MediaStreamTrackSources to
dynamically created MediaStreamTracks.
MozReview-Commit-ID: 3v91zLiqfl7
--HG--
extra : rebase_source : 4fe67e92b9c833fe5ba964fc5f3b11ba21447f36
This lets a MediaStreamTrack communicate with its source/producer on the
main thread. It's for now used for stopping a track at the source and
retrieving some metadata, but it could also be a link between actual
sinks of a track and the source, to for instance let the source optimize
by scaling down the resolution when all sinks want lowres-video.
MozReview-Commit-ID: D4SJLr0aqhJ
--HG--
extra : rebase_source : ea511b5c86ca4836bfa980825f04617fef498261
