In order to be able to change the audio output device, the device id is exposed to the constructor of MediaStreamGraph. Any component that gets/creates an MTG will be able to provide the device id in order to determine the desired output device. If the provided device id is null the default device will be used.
Differential Revision: https://phabricator.services.mozilla.com/D64133
--HG--
extra : moz-landing-system : lando
This change mainly removes the `mTracks` member from MediaStream and moves all
associated members up a level, so that a MediaStream in practice represents a
single track.
Classes will be renamed in a future patch to reflect this.
Other changes include:
The new `mEnded` member of MediaStream changes meaning to only become true when
all data in the stream has been processed. It stems from
StreamTracks::Track::mEnded which used to become true as soon as the last bit of
data had been added to a track, and there could still be data in the track that
would get processed in future iterations. We are moving towards not having any
future data in tracks, which is why this change is ok to make -- keeping the old
behavior will soon not make sense.
TrackUnionStream is changed to no longer take a list of streams as input and
forward the union of their tracks to itself. Instead it's limited to having one
track as input at a time.
The autofinishing functionality that TrackUnionStream had before has been
transformed into an autoending functionality to allow it to defer ending until
its been told that it's ok to end through the control API. This lets a single
TrackUnionStream span the lifetime of multiple inputs, which will be useful for
making DecodedStream spec compliant with HTMLMediaElement::CaptureStream(), and
for implementing the currently discussed MediaRecorder::ReplaceTrack(), to name
a few potential use cases.
AudioNodeStreams used to only have a track (and thus an AudioSegment) if the
EXTERNAL_OUTPUT flag was enabled on them. With all MediaStreams now representing
a track, AudioNodeStreams inherently have an AudioSegment as a member. It is
however only used with data if the EXTERNAL_OUTPUT flag is enabled.
Differential Revision: https://phabricator.services.mozilla.com/D45821
--HG--
extra : moz-landing-system : lando
This change mainly removes the `mTracks` member from MediaStream and moves all
associated members up a level, so that a MediaStream in practice represents a
single track.
Classes will be renamed in a future patch to reflect this.
Other changes include:
The new `mEnded` member of MediaStream changes meaning to only become true when
all data in the stream has been processed. It stems from
StreamTracks::Track::mEnded which used to become true as soon as the last bit of
data had been added to a track, and there could still be data in the track that
would get processed in future iterations. We are moving towards not having any
future data in tracks, which is why this change is ok to make -- keeping the old
behavior will soon not make sense.
TrackUnionStream is changed to no longer take a list of streams as input and
forward the union of their tracks to itself. Instead it's limited to having one
track as input at a time.
The autofinishing functionality that TrackUnionStream had before has been
transformed into an autoending functionality to allow it to defer ending until
its been told that it's ok to end through the control API. This lets a single
TrackUnionStream span the lifetime of multiple inputs, which will be useful for
making DecodedStream spec compliant with HTMLMediaElement::CaptureStream(), and
for implementing the currently discussed MediaRecorder::ReplaceTrack(), to name
a few potential use cases.
AudioNodeStreams used to only have a track (and thus an AudioSegment) if the
EXTERNAL_OUTPUT flag was enabled on them. With all MediaStreams now representing
a track, AudioNodeStreams inherently have an AudioSegment as a member. It is
however only used with data if the EXTERNAL_OUTPUT flag is enabled.
Differential Revision: https://phabricator.services.mozilla.com/D45821
--HG--
extra : moz-landing-system : lando
This is inherently large, because modifying these bits of DOMMediaStream and
MediaStreamTrack affects all consumers and producers of all DOMMediaStreams and
MediaStreamTracks.
Things are generally much simpler now.
Producers of tracks now create a MediaStream in the graph, add it to a
MediaStreamTrackSource subclass that takes ownership of it, and add the source
to a MediaStreamTrack. Should the producer need a DOMMediaStream it is now much
simpler to create as the only thing needed is the current window. The stream is
a rather simple wrapper around an array of MediaStreamTracks.
HTMLMediaElement is still not as straight forward as other consumers since it
consumes the DOMMediaStream directly, as opposed to a set of tracks.
The new MediaStreamRenderer helper class helps bridge the gap between this fact
and the new track-based MediaStreamGraph interface, as it needs to juggle
registering multiple audio tracks for audio output. This hooks into existing
HTMLMediaElement logic and brings a welcome simplification to all the glue
previously needed there.
Differential Revision: https://phabricator.services.mozilla.com/D37934
--HG--
extra : moz-landing-system : lando
VideoSegments still have durations, and they are still needed by the
MediaStreamGraph as it shuffles MediaSegments around.
They do not have a say in the wall-clock duration of video frames however.
Removing this should prevent any producers starting to add video chunks with
durations in the future.
Differential Revision: https://phabricator.services.mozilla.com/D22914
--HG--
extra : moz-landing-system : lando
This removes DecodedStream's use of MediaStreamListener in favor of
MediaStreamTrackListener. This change has however rippled through to a lot
more cleanup, per below.
This moves the MediaStreamTrack lifetime ownership for captured
HTMLMediaElements from the media element to DecodedStream, where the
MediaStreamGraph-side tracks are already created and ended today.
This makes MediaStreamTrack creation explicit across the entire codebase and
lets us remove the MediaStreamTrackSourceGetter class and the infrastructure
of adding MediaStreamTracks after they've already been created in the graph
from DOMMediaStream.
With track ownership, and thus TrackID allocation ownership, happening
exclusively in DecodedStream for its output tracks, we also stop throwing
away and recreating the SourceMediaStream to which we feed data on seek.
This is one step closer to fixing bug 1172394 and spec compliance of
HTMLMediaElement.captureStream().
Differential Revision: https://phabricator.services.mozilla.com/D12273
--HG--
extra : moz-landing-system : lando
Replace it with NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION, because it
has been the same for a while.
MozReview-Commit-ID: 5agRGFyUry1
--HG--
extra : rebase_source : 5388c56b2f6905c6ef969150f0c5b77bf247624d
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 allows DOMMediaStream to assign MediaStreamTrackSources to
dynamically created MediaStreamTracks.
MozReview-Commit-ID: 3v91zLiqfl7
--HG--
extra : rebase_source : 4fe67e92b9c833fe5ba964fc5f3b11ba21447f36
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout. The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.
CLOSED TREE makes big refactorings like this a piece of cake.
# The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
xargs perl -p -i -e '
s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
s/nsRefPtr ?</RefPtr</g; # handle declarations and variables
'
# Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h
# Handle nsRefPtr.h itself, a couple places that define constructors
# from nsRefPtr, and code generators specially. We do this here, rather
# than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
# things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
mfbt/nsRefPtr.h \
xpcom/glue/nsCOMPtr.h \
xpcom/base/OwningNonNull.h \
ipc/ipdl/ipdl/lower.py \
ipc/ipdl/ipdl/builtin.py \
dom/bindings/Codegen.py \
python/lldbutils/lldbutils/utils.py
# In our indiscriminate substitution above, we renamed
# nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'
if [ -d .git ]; then
git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi
--HG--
rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
This lets us separate tracks by ownership like so:
* Input - Owned by the producer of the DOMMediaStream (gUM etc.)
* Owned - Contains Input tracks (per above) or tracks cloned tracks
if this DOMMediaStream is a clone.
* Playback - Contains Owned tracks plus tracks addTrack()ed to this
DOMMediaStream minus tracks removeTrack()ed from this
DOMMediaStream.
--HG--
extra : commitid : GPSNwBVyD4j
extra : rebase_source : fba22e96c6c65a74e012509f3da67a4d7df7a244
This lets us separate tracks by ownership like so:
* Input - Owned by the producer of the DOMMediaStream (gUM etc.)
* Owned - Contains Input tracks (per above) or tracks cloned tracks
if this DOMMediaStream is a clone.
* Playback - Contains Owned tracks plus tracks addTrack()ed to this
DOMMediaStream minus tracks removeTrack()ed from this
DOMMediaStream.
--HG--
extra : commitid : Kvj9RrN9MgP
Alex Chronopoulos
Simon Giesecke
shindli
Andreas Pehrson
Gurzau Raul
Sylvestre Ledru
Andreas Pehrson
Jeff Gilbert
Kris Maglione
Andrew McCreight
Matthew Gregan
Paul Adenot
Bill McCloskey
Jean-Yves Avenard
Andreas Pehrson
Kyle Huey
Nathan Froyd
Wes Kocher
Karl Tomlinson
Daniel Holbert