Commit Graph

161 Commits

Author SHA1 Message Date
ab30d72b72 Use backticks not vertical bars to denote variables in comments for /video
Bug: webrtc:12338
Change-Id: I47958800407482894ff6f17c1887dce907fdf35a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227030
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34585}
2021-07-28 13:22:27 +00:00
bd06b76e5b VideoStreamEncoder: Remove unused member variables:
encoder_bitrate_limits_
quality_scaling_experiment_enabled_

Bug: none
Change-Id: Ifb2b839c826f3d1e416db877d3133ac6ad969000
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/213141
Commit-Queue: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33587}
2021-03-29 14:58:05 +00:00
0e42cf703b Reland "Parse encoded frame QP if not provided by encoder"
This reverts commit 727d2afc4330efebc904e0e4f366e885d7b08787.

Reason for revert: Use thread-safe wrapper for H264 parser.

Original change's description:
> Revert "Parse encoded frame QP if not provided by encoder"
>
> This reverts commit 8639673f0c098efc294a7593fa3bd98e28ab7508.
>
> Reason for revert: linux_tsan fails https://ci.chromium.org/ui/p/webrtc/builders/ci/Linux%20Tsan%20v2/25329/overview
>
> Original change's description:
> > Parse encoded frame QP if not provided by encoder
> >
> > Bug: webrtc:12542
> > Change-Id: Ic70b46e226f158db7a478a9f20e1f940804febba
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/210966
> > Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
> > Reviewed-by: Åsa Persson <asapersson@webrtc.org>
> > Cr-Commit-Position: refs/heads/master@{#33434}
>
> TBR=asapersson@webrtc.org,ssilkin@webrtc.org
>
> Change-Id: Ie251d8f70f8e87fd86b63730aefd2ef3f941e4bb
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: webrtc:12542
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/211355
> Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
> Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#33441}

# Not skipping CQ checks because this is a reland.

Bug: webrtc:12542
Change-Id: Ib7601fd6f2f26bceddbea2b4ba54d67a281f3a59
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/211660
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33458}
2021-03-15 10:11:22 +00:00
fd87944042 Removed WebRTC-NetworkCondition-EncoderSwitch field trial.
Bug: webrtc:12474
Change-Id: I50b3219c0dc9d8a63ff097ee6a71c04fe903aea9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/211663
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33449}
2021-03-12 16:12:55 +00:00
727d2afc43 Revert "Parse encoded frame QP if not provided by encoder"
This reverts commit 8639673f0c098efc294a7593fa3bd98e28ab7508.

Reason for revert: linux_tsan fails https://ci.chromium.org/ui/p/webrtc/builders/ci/Linux%20Tsan%20v2/25329/overview 

Original change's description:
> Parse encoded frame QP if not provided by encoder
>
> Bug: webrtc:12542
> Change-Id: Ic70b46e226f158db7a478a9f20e1f940804febba
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/210966
> Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
> Reviewed-by: Åsa Persson <asapersson@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#33434}

TBR=asapersson@webrtc.org,ssilkin@webrtc.org

Change-Id: Ie251d8f70f8e87fd86b63730aefd2ef3f941e4bb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:12542
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/211355
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33441}
2021-03-11 17:06:06 +00:00
8639673f0c Parse encoded frame QP if not provided by encoder
Bug: webrtc:12542
Change-Id: Ic70b46e226f158db7a478a9f20e1f940804febba
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/210966
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33434}
2021-03-11 11:48:38 +00:00
258e9899f4 Use default ResolutionBitrateLimits for simulcast with one active stream if not configured
Bug: none
Change-Id: I049dd0924adc43ce249a8eda63cdcb13da42b030
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/208541
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Commit-Queue: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33343}
2021-02-25 12:14:45 +00:00
d15a575ec3 Use SequenceChecker from public API
Bug: webrtc:12419
Change-Id: I00cca16a0ec70246156ba00b97aa7ae5ccbf5364
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/205323
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33220}
2021-02-10 15:04:55 +00:00
c8421c4c3e Replace rtc::ThreadChecker with webrtc::SequenceChecker
Bug: webrtc:12419
Change-Id: I825c014cc1c4b1dcba5ef300409d44859e971144
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/205002
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33136}
2021-02-02 14:56:27 +00:00
b03b6c8a94 Move setting of encoder bitrate allocation callback type to VideoSendStream
It turned out that the negotiated rtp header extensions are not fully known in WebRtcVideoChannel::AddSendStream.

The cl also remove the unnecessary factory for creating VideoStreamEncoder.


Bug: webrtc:12000
Change-Id: If994c8deb69f3ce4212896d3ad757dac94c6e09f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/198840
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32916}
2021-01-07 09:29:05 +00:00
dcef6410b3 Stop using VideoBitrateAllocationObserver in VideoStreamEncoder.
VideoBitrateAllocation is instead reported through the EncoderSink.
Enable VideoBitrateAllocation reporting from WebRtcVideoChannel::AddSendStream in preparation for
using the extension RtpVideoLayersAllocationExtension instead of RTCP XR.

Bug: webrtc:12000
Change-Id: I5ea8e4f237a1c4e84a89cbfd97ac4353d4c2984f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186940
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32347}
2020-10-07 18:01:13 +00:00
d0a8f51ef7 Reland Refactor reporting of VideoBitrateAllocation
Original description
 Move reporting of target bitrate to just after the encoder has been
 updated. Originall submitted as refs/heads/master@{#32275}

Patch 1 contains the original cl
,patch 2 the fix to send rtcp even if BWE does not change.

Bug: webrtc:12000
Change-Id: I16766e08229fe1f6f65f449e0e074bed03338693
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186948
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32340}
2020-10-07 11:06:56 +00:00
b8781796d4 Revert "Refactor reporting of VideoBitrateAllocation"
This reverts commit 39a31afb77e3ce5c4ff53b8bab06364712cae7ce.

Reason for revert: Will cause RTCP Target bitrate messages to not be sent unless BWE changes. 

Original change's description:
> Refactor reporting of VideoBitrateAllocation
>
> Move reporting of target bitrate to just after the encoder has been
> updated.
>
> Bug: webrtc:12000
> Change-Id: I3e7c5bd44c2f64e5f7e32d6451861b80e0b779ca
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186041
> Commit-Queue: Per Kjellander <perkj@webrtc.org>
> Reviewed-by: Erik Språng <sprang@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#32275}

TBR=sprang@webrtc.org,perkj@webrtc.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:12000
Change-Id: Icf21e6ae28dc17c61b9243c037ffef9b623894ee
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186945
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32337}
2020-10-07 08:14:21 +00:00
39a31afb77 Refactor reporting of VideoBitrateAllocation
Move reporting of target bitrate to just after the encoder has been
updated.

Bug: webrtc:12000
Change-Id: I3e7c5bd44c2f64e5f7e32d6451861b80e0b779ca
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/186041
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32275}
2020-10-01 14:10:09 +00:00
d41c2a6b8a Remove AsyncInvoker from WebRtcVideoChannel.
RequestEncoderFallback, RequestEncoderSwitch and
SetVideoCodecSwitchingEnabledRequest are now all called on the
worker thread. Before, the work already happened on that thread but
WebRtcVideoChannel adapted internally when needed.

With this CL, there are thread checks to make sure that these calls are
always made the same way, we don't need the async invoker and there
are fewer calls out from the encoder thread in VideoStreamEncoder
(reducing the chance of unintentional blocking).

Bug: webrtc:11908
Change-Id: If8738bc2a708a0fefc6fe850b32655f049f30bdc
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/184603
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32151}
2020-09-21 15:04:43 +00:00
612445ea60 Remove use of asyncinvoker from WebRtcVideoSendStream.
This turned out to be a bit complicated, mostly
related to the tests, but here's what's changed:

* No AsyncInvoker (and avoid ClearInternal) in
  WebRtcVideoSendStream (WVSS)
* The reason it was there is due to a "design leak" from
  VideoSourceSinkController/VideoStreamEncoder where the former uses
  locks in all methods and is unaware of a threading model. That design
  affected downstream objects, pushed the need for an async hop into
  WVSS and added a lock.
  A suggestion was made to address this in a follow-up change, here:
  https://webrtc-review.googlesource.com/c/src/+/165684
* All methods in VideoSourceSinkController are now called on a known
  and checked sequence and this CL removes the lock. This also makes
  checking state consistent (i.e. calling a getter twice in a row on the
  same sequence, will always return the same value, avoiding race with
  other threads).
* Handling of reporting state changes from the encoder queue to the
  VSSC, is done by VideoStreamEncoder.
* VideoSendStreamImpl is still instantiated on the incorrect thread [1]
  but has two initialization steps [2]. The second one already runs on
  the right thread. Addressing that TODO [1] is something we should do
  but it has side effects to consider. For the purposes of this CL
  the steps relating to the encoder (setting the sink pointer) have
  been moved to [2].

[1] https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/video/video_send_stream.cc;l=94
[2] https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/video/video_send_stream.cc;drc=f4a9991cce74a37d006438ec0e366313ed33162e;l=115

Bug: webrtc:11222, webrtc:11908
Change-Id: Ie46d46e3a52bbe225951b4bd580ecb8cc9cad873
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/184508
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32150}
2020-09-21 13:29:53 +00:00
99b0f8d26c Reland "[Adaptation] Remove QualityScalerResource when disabled."
This is a reland of ba8abbb630cdd9d05e22c830d0845e920762850d

This can be relanded as the queuing issues that were causing a
crash in the WebRTC roll in Chromium have been resolved. I have
added the Chromium failing targets to the CQ for this commit and
they have succeeded.

Original change's description:
> [Adaptation] Remove QualityScalerResource when disabled.
>
> Bug: webrtc:11843
> Change-Id: I2d3e40356c266f189db0242f3c7590e6d83e4456
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181369
> Commit-Queue: Evan Shrubsole <eshr@google.com>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31924}

Bug: webrtc:11843
Change-Id: I228331293060ef996f1dd7f8e18d52b0818f526b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/182080
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31996}
2020-08-26 06:33:43 +00:00
8572841131 [Adaptation] Remove resource adaptation queue
Resource adaptation needs refactoring for async adaptations. For now
the resource adaptation processor can work on the encoder thread, until
it is refactored to support async adaptation.

Bug: webrtc:11867
Change-Id: I9c46da356db19c0fd52748c999ccb216f2ca923b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/182040
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31991}
2020-08-25 12:16:20 +00:00
2549f174b5 Remove RTPFragmentationHeader creation and propagation through webrtc
Bug: webrtc:6471
Change-Id: I5cb1e10088aaecb5981888082b87ae9957bbaaef
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181541
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31955}
2020-08-17 16:37:33 +00:00
61b2993aaf Revert "[Adaptation] Remove QualityScalerResource when disabled."
This reverts commit ba8abbb630cdd9d05e22c830d0845e920762850d.

Reason for revert: Suspect of causing Chormium trybots to fail, preventing rolls. Will reland if the revert does not fix it.

Original change's description:
> [Adaptation] Remove QualityScalerResource when disabled.
> 
> Bug: webrtc:11843
> Change-Id: I2d3e40356c266f189db0242f3c7590e6d83e4456
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181369
> Commit-Queue: Evan Shrubsole <eshr@google.com>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31924}

TBR=ilnik@webrtc.org,eshr@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:11843
Change-Id: Idc3950be209c6edce0dbe72d98c9b4becae0049f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181880
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Commit-Queue: Guido Urdaneta <guidou@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31952}
2020-08-17 13:46:30 +00:00
ba8abbb630 [Adaptation] Remove QualityScalerResource when disabled.
Bug: webrtc:11843
Change-Id: I2d3e40356c266f189db0242f3c7590e6d83e4456
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181369
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31924}
2020-08-13 08:42:27 +00:00
b9c1654cc7 [Adaptation] Delete AdaptationListener
It was not used by any class and all future uses can use the
VideoSourceRestrictionsListener.

Bug: webrtc:11834
Change-Id: I5c71b93cc503f458dce0ccdd78b91b5a1debc56d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181062
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31896}
2020-08-10 17:43:56 +00:00
3d2210876e Remove unused critical section includes.
Bug: webrtc:11567
Change-Id: Ic5e43c51ce06c0619adc265d12ad4bef73a9df76
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179521
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Markus Handell <handellm@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31745}
2020-07-16 13:52:28 +00:00
517f81e0a4 [Adaptation] Make ResourceAdaptationProcessorInterface resources thread-safe
This is one less dependency on the task queue, and will make
things like removing resources and cleanup much easier in the future.

Bug: webrtc:11754
Change-Id: I732f1935d1b58ffe09ca2a2bf59beebc1930214d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178869
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31686}
2020-07-09 12:37:26 +00:00
dc4d422738 [Adaptation] Move AdaptationListeners to VideoStreamAdapter
This is a step needed for multi-stream and new mitigations. It also
cleans up needing to signal adaptation changes in mutiple places
from ResourceAdaptationProcessor.

R=hbos@webrtc.org

Bug: webrtc:11754
Change-Id: Ib185dc9f66fbb4a087eb9e970c68c3f47eafb17f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178874
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31684}
2020-07-09 11:10:36 +00:00
9492d500dd [Adaptation] Move deg.pref. out of ResourceAdaptationProcessor
This patch creates a new class which provides the DegradationPreference
thread safe to all classes that need if (BalancedConstraint and
QpScalerResource). It also broadcasts to all listeners when the
preferences are updated, so the ResourceAdaptationProcessor can update
the video if needed.

In future work, this could be used to remove the need for two task
queues for the VideoStreamEncoder resources.

Bug: webrtc:11700
Change-Id: I05480db8b7157b5643f6f86ec9c64850839b3e76
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177522
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31623}
2020-07-03 13:10:27 +00:00
ec0af26ff8 [Adaptation] VideoStreamAdapter broadcasts adaptations
This moves this responsibility from the ResourceAdaptaitonProcessor
to the VideoStreamAdapter. A new interface for listening to adaptation
changes was added, and the ResourceAdaptationProcessor now listens on
the VideoStreamAdapter for those changes.

This means that going forward,

1. We can do adaptations outside of resource limitations, like setting
prior adaptations on a resource like initial frame dropper is designed
to.
2. Adaptations can be on a different queue than the
ResourceAdaptaitonProcessor's queue since updates are pushed through
the listener.


Bug: webrtc:11700
Change-Id: I6de0dec748dba095e702f0b9893c5afa50b51aa9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176859
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31615}
2020-07-02 12:16:25 +00:00
f4a9991cce [Adaptation] Adding adaptation resources from Call.
This CL adds AddAdaptationResource to Call and
AddAdaptationResource/GetAdaptationResources method to relevant
VideoSendStream and VideoStreamEncoder interfaces and implementations.

Unittests are added to ensure that resources can be added to the Call
both before and after the creation of a VideoSendStream and that the
resources always gets added to the streams.

In a follow-up CL, we will continue to plumb the resources all the way
to PeerConnectionInterface, and an integration test will then be added
to ensure that injected resources are capable of triggering adaptation.

Bug: webrtc:11525
Change-Id: I499e9c23c3e359df943414d420b2e0ce2e9b2d56
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177002
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31499}
2020-06-11 12:43:21 +00:00
e2e8c17cbf [Adaptation] Move Resource to api/ folder.
This is a prerequisite to implementing it externally.

Bug: webrtc:11525
Change-Id: I9cb3b4418396485d3eb9f25cafa51cbff6db7817
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176401
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31418}
2020-06-03 08:51:29 +00:00
0f0aa9c7a8 [Adaptation] Move IsAdaptationUpAllowed/OnAdaptationApplied out of API.
IsAdaptationUpAllowed is moved from Resource to AdaptationConstraint.
OnAdaptationApplied is moved from Resource to AdaptationListener.

In a future CL, Resource will be moved to api/, but
AdaptationConstraint and AdaptationListener will stay in call/.

The processor, encode stream and manager are updated to keep track of
both resources, constraints and listeners. Fakes and tests are updated.
After this CL, the manager's inner classes that prevent adaptation
implement AdaptationConstraint instead of Resource.

Bug: webrtc:11525
Change-Id: Ie9cd5b1ba7d8e161951e131ab8f6bd9d5cf765bf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176368
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31409}
2020-06-02 13:02:36 +00:00
8133ffb187 In GenericFrameInfo do not set frame_id and frame_diff
No code reads these properties.
They are recalculated by RtpPayloadParams
and set directly into RTPVideoHeader::generic.

Bug: webrtc:10342
Change-Id: Ib7bda4e6e5b0d0b3a585a848e3312fb66f8ae36d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175127
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31269}
2020-05-15 09:43:34 +00:00
a0a4480f12 Migrate CallStats and RtpStreamsSynchronizer timers over to RepeatingTask
Bug: none
Change-Id: Ib49a3de74c6d3a6d4ea158383a5e4b69a1e58ab9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175000
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31252}
2020-05-14 09:58:22 +00:00
381d10963a [Adaptation] Move adaptation logic to a separate task queue.
This CL unblocks future Call-Level Mitigation strategies by moving the
ResourceAdaptationProcessor to a separate task queue. This signifies a
major milestone in the new resource adaptation architecture because
with this CL the threading model is in place and moving the Processor
to the Call and increasing its responsibilities is made possible.

In this CL, we still have one Processor per VideoStreamEncoder and the
VideoStreamEncoder is responsible for the creation and the destruction
of its Processor and that Processor's task queue. But the PostTasks are
in place and the decision-making is executed on a separate queue.

This CL:
- Moves ResourceAdaptationProcessor to an adaptation task queue.
  It continues to be entirely single-threaded, but now operates on a
  separate task queue.
- Makes Resources thread-safe: Interaction with the Processor, i.e.
  OnResourceUsageStateMeasured() and IsAdaptationUpAllowed(), happens
  on the adaptation task queue. State updates are pushed from the
  encoder task queue with PostTasks.
- QualityScalerResource operates on both task queues; the QP usage
  callbacks are invoked asynchronously.
- The VideoStreamEncoderResourceManager operates on the encoder task
  queue with the following exceptions:
  1) Its resources are accessible on any thread (using a mutex). This
     is OK because resources are reference counted and thread safe.
     This aids adding and removing resources to the Processor on the
     adaptation task queue.
  2) |active_counts_| is moved to the adaptation task queue. This makes
     it possible for PreventAdaptUpDueToActiveCounts to run
     IsAdaptationUpAllowed() on the adaptation task queue.
     A side-effect of this is that some stats reporting now happen on
     the adaptation task queue, but that is OK because
     VideoStreamEncoderObserver is thread-safe.

The Manager is updated to take the new threading model into account:
- OnFrameDroppedDueToSize() posts to the adaptation task queue to
  invoke the Processor.
- OnVideoSourceRestrictionsUpdated(), now invoked on the adaptation
  task queue, updates |active_counts_| synchronously but posts to the
  encoder task queue to update video source restrictions (which it
  only uses to calculate target frame rate).
- MaybePerformQualityRampupExperiment() posts to the adaptation task
  queue to maybe reset video source restrictions on the Processor.
  |quality_rampup_done_| is made std::atomic.

Bug: webrtc:11542, webrtc:11520
Change-Id: I1cfd76e0cd42f006a6d2527f5aa2aeb5266ba6d6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174441
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31231}
2020-05-13 08:21:23 +00:00
c55516dd55 [Adaptation] Make Resources reference counted and add more DCHECKs.
In a future CL, adaptation processing and stream encoder resource
management will happen on different task queues. When this is the case,
asynchronous tasks will be posted in both directions and some resources
will have internal states used on multiple threads.

This CL makes the Resource class reference counted in order to support
posting tasks to a different threads without risk of use-after-free
when a posted task is executed with a delay. This is preferred over
WeakPtr strategies because WeakPtrs are single-threaded and preferred
over raw pointer usage because the reference counted approach enables
more compile-time and run-time assurance. This is also "future proof";
when resources can be injected through public APIs, ownership needs to
be shared between libwebrtc and the application (e.g. Chrome).

To reduce the risk of making mistakes in the future CL, sequence
checkers and task queue DCHECKs are added as well as other DCHECKs to
make sure things have been cleaned up before destruction, e.g:
- Processor gets a sequence checker. It is entirely single-threaded.
- Processor must not have any attached listeners or resources on
  destruction.
- Resources must not have any listeners on destruction.
- The Manager, EncodeUsageResource and QualityScalerResource DCHECKs
  they are running on the encoder queue.
- TODOs are added illustrating where we want to add PostTasks in the
  future CL.

Lastly, upon VideoStreamEncoder::Stop() we delete the
ResourceAdaptationProcessor. Because the Processor is already used in
posted tasks, some if statements are added to ensure the Processor is
not used after destruction.

Bug: webrtc:11542, webrtc:11520
Change-Id: Ibaa8a61d86d87a71f477d1075a117c28d9d2d285
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174760
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31217}
2020-05-11 20:35:30 +00:00
3745d3fc93 [Adaptation] Use ResourceAdaptationProcessorInterface* instead of impl.
This replaces references to the ResourceAdaptationProcessor with
references to its interface. This would make it possible to have
alternative implementations or inject fake/mock implementations for
testing.

The VideoStreamAdapter is still responsible for constructing the
ResourceAdaptationProcessor, but beyond construction it is agnostic
towards the implementation.

With this CL, I claim https://crbug.com/webrtc/11222 complete.

TBR=ilnik@webrtc.org

Bug: webrtc:11222
Change-Id: I6e7a73bf1d0b5e97bc694f66180a747b27ffb018
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174160
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31148}
2020-04-30 09:16:41 +00:00
91aa73255e [Adaptation] Add OnAdaptationApplied(), remove ResourceListenerResponse.
This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

The ResourceListenerResponse was used to make the QualityScaler
not clear QP samples and instead increase its frequency of checking for
QP under certain circumstances, see enum description:
https://webrtc.googlesource.com/src.git/+/c70b1028d47c1aee4892545190cd66e97d09cd55/call/adaptation/resource.h#33

Because the QualityScaler depends on whether and how adaptation
happened it should listen to adaptation happening.

This CL moves the logic that was previously in VideoStreamAdapter closer
to the QualityScaler: QualityScalerResource::OnAdaptationApplied().

This would allow the VideoStreamAdapter to operate on a separate task
queue in the future, with no dependencies on any stream-specific
resources that might operate on other task queues.

Bug: webrtc:11172, webrtc:11521
Change-Id: I07971a8a5fab5715f4ccb7d2c63f1b92bd47170f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173090
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31143}
2020-04-29 09:08:46 +00:00
87eece9421 [Adaptation] Introducing call/adaptation/ResourceAdaptationProcessor.
This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

This gets to the heart of unblocking call-level adaptation, largely
made possible due to the previous CLs in the chain.

The parts of the code that are responsible for responding to resource
usage signals, obtaining adaptations and applying them are moved to
ResourceAdaptationProcessor in call/adaptation/.

The parts of the code that are responsible for managing
VideoStreamEncoder-specific resources stay inside the
VideoStreamEncoderResourceManager class in video/adaptation/.

After this CL lands it should soon be possible to move the Processor
over to a separate task queue and let the Manager stay on the encoder
queue if PostTasks are added for communication between the two objects.

Bug: webrtc:11172
Change-Id: Ifa212467b4afd16e7ebfb9adfe17d2dca1cb7d67
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173021
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31105}
2020-04-17 16:39:21 +00:00
de8d551b95 [Adaptation] Rename the processor "VideoStreamEncoderResourceManager".
This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

This CL is a pure rename CL.
The next CL split this class up into a "Manager" part and a "Processor"
part. By doing the renaming separately, reviewing of the next CL should
be easier.

Bug: webrtc:11172
Change-Id: I2d5bac049b4bb88d4f947f8c4dc61e2131164a59
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173020
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31104}
2020-04-17 16:09:11 +00:00
d2930c6c2b [Adaptation] Report AdaptationCounters OnVideoSourceRestrictionsUpdated.
This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

By pushing VideoAdaptationCounters updates on VideoSourceRestrictions
changes, alongside the Resource* that triggered the adaptation, we are
able to update |active_counts_| without an explicit dependency on the
VideoStreamAdapter. This allows a future CL to split up "processor"
logic from "video stream encoder resource and active counts" logic,
which will ultimately be necessary in order to do processing on a
"processing queue" and encoder and stats logic on the "encoder queue".

If the restrictions got cleared by an API call
(ResetVideoSourceRestrictions() or SetDegradationPreference()) we pass
null as the "reason_resource". This allows is to clear the
active_counts_, and the code that invokes
OnVideoSourceRestrictionsUpdated() does not have to be aware of
active_counts_ (needed to split the processor module in two).

Bug: webrtc:11172
Change-Id: Icab6d5121c0ebd27d2a00f1bffc8191f8f05f562
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173000
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31103}
2020-04-17 15:10:15 +00:00
d516b25852 [Adaptation] Introduce VideoStreamInputState and its Provider.
This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

The "input state" of a VideoStream, needed for adaptation and
decision-making, are: source resolution and frame rate, codec type and
min pixels per frame (based on encoder scaling settings). These values
are modified on the encoder queue of the VideoStreamEncoder.

But in order to unblock call-level adaptation processing, where
adaptation and decision making happens off the encoder queue, a snapshot
of the input states need to be available at point of processing:
introducing the VideoStreamInputState.

In this CL, the VideoStreamInputStateProvider is added to provide input
state snapshots across threads based on input from VideoStreamEncoder
and VideoStreamEncoderObserver.

The input state's HasInputFrameSizeAndFramesPerSecond() can now be
DCHECKed inside the VideoStreamAdapter in favor of having less
Adaptation::Status codes. Whether input is "sufficient" for adaptation
is now the responsibility of the Processor. (Goal: adapter is purely a
Adaptation generator and apply-er.)

Somewhat tangental, this CL also deletes VideoStreamEncoder-specific
methods from ResourceAdaptationProcessorInterface making them an
implementation detail of ResourceAdaptationProcessor. In a future CL,
the "processor" will be split up into a "processor" part and a "video
stream encoder resource manager" part - more on that later.

Bug: webrtc:11172
Change-Id: Id9b158f569db0140b75360aaf0f7e2e28fb924f4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172928
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31098}
2020-04-17 11:45:50 +00:00
ce0a11d5f9 Unify AdaptationReason and AdaptReason enums.
Moves the unified AdaptationReason to the api/ folder.

Bug: webrtc:11392
Change-Id: I28782e82ef6cc3ca3b061f65b0bbdc3766df1f9c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172583
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31084}
2020-04-16 13:33:49 +00:00
62057627ef [Adaptation] Rename and move resource adaptation module/processor stuff.
Rename:
- call/adaptation/resource_adaptation_module_interface.[h/cc] -->
  call/adaptation/resource_adaptation_processor_interface.[h/cc]
- call/adaptation/resource_adaptation_processor.[h/cc] -->
  call/adaptation/new_resource_adaptation_processor_poc.[h/cc]

Move + Rename:
- video/overuse_frame_detector_resource_adaptation_module.[h/cc] -->
  video/adaptation/resource_adaptation_processor.[h/cc]

Move:
- video/encode_usage_resource.[h/cc] --> video/adaptation/...
- video/overuse_frame_detector.[h/cc] --> video/adaptation/...
- video/quality_scaler_resource.[h/cc] --> video/adaptation/...

Unittests are also moved. In order to avoid a circular dependency,
VideoStreamEncoder::kDefaultLastFrameInfo[Width/Height] is moved and
renamed to kDefaultInputPixels[Width/Height] in
video/adaptation/resource_adaptation_processor.[h/cc].

Bug: webrtc:11222
Change-Id: Icf920e8a7362002b1c63c42b2d9e2e63c990b532
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170117
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30754}
2020-03-11 09:30:16 +00:00
b0f2e0ced4 [Overuse] Make VideoStreamAdapter responsible for executing adaptation.
This CL moves GetAdaptUpTarget(), GetAdaptDownTarget() and
ApplyAdaptationTarget() - and related code - to the VideoStreamAdapter.

This includes pieces related to calculating how to adapt, including:
- DegradationPreference
- BalancedDegradationPreference
- AdaptationRequest and last_adaptation_request_
- CanAdaptUpResolution()

The VideoStreamAdapter's interface has changed: VideoSourceRestrictor
methods are now hidden in favor of methods exposing AdaptationTarget.

This CL also does some misc moves:
- GetEncoderBitrateLimits is moved and renamed to
  VideoEncoder::EncoderInfo::GetEncoderBitrateLimitsForResolution.
- EncoderSettings moved to a separate file.

// For api/video_codecs/video_encoder.[cc/h] changes, which is the
// moving of a function.
TBR=sprang@webrtc.org

Bug: webrtc:11393
Change-Id: Ie6bd8ef644ce927d7eca6ab90a0a7bcace682f3c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/169842
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30708}
2020-03-06 13:35:20 +00:00
aa6fbc156e Support injecting new Resources for overuse
* This replaces the video stream methods for forcing adaptation
with a mock resource that triggers overuse.
* Resources can now be injected to the Module using the AddResource
function.
* Resources now have tests for adding and removing callbacks.
* Quality/EncoderUse% resources are tracked in the Resource list of
the adaptation module.
* The adaptation module ties all resources to a reason to keep stats
working as expected.

BUG=webrtc:11377

Change-Id: I1f5902f7416dc41b4915c0072e6f0da2bb3bb2b7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168948
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30610}
2020-02-25 16:17:42 +00:00
e67c6bcd06 Remove unused fields and includes from VideoStreamEncoder
Bug: webrtc:11222
Change-Id: Iec496d0955c1a30c61da147f0407fd76534129b7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168184
Commit-Queue: Evan Shrubsole <eshr@google.com>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30496}
2020-02-11 13:58:33 +00:00
9b05803e19 Implement injectable EncoderSelectorInterface and wire it up in the VideoStreamEncoder.
The EncoderSelectorInterface is meant to replace the "WebRTC-NetworkCondition-EncoderSwitch" field trial, so the field trial will be ignored if an EncoderSelectorInterface object has been injected.

Bug: webrtc:11341
Change-Id: I5371fac9c9ad8e38223a81dd1e7bfefb2bb458cb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168193
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Rasmus Brandt <brandtr@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30490}
2020-02-10 12:12:47 +00:00
9b881abea9 Enable congestion window pushback to reduce bitrate by only drop video frames.
With current congestion window pushback, when congestion window is filling up, it will reduce bitrate directly and encoder may reduce encode quality, resolution, or framerate to adapt to the allocated bitrate, the behavior is depending on the degradation preference.
This change enable congestion window to only drop frames to reduce bitrate (when needed) instead of reduce general bitrate allocation.

Bug: webrtc:11334
Change-Id: I9cf5c20a0858c4d07d006942abe72aa5e1f7cb38
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168059
Commit-Queue: Ying Wang <yinwa@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30483}
2020-02-07 14:14:47 +00:00
7875c99e82 [Overuse] Add EncodeUsageResource and QualityScalerResource.
This refactors the usage of OveruseFrameDetector in
OveruseFrameDetectorResourceAdaptationModule into an inner class of the
module, making the interaction between the detector and the module the
responsibility of this helper class instead.

Similarly, QualityScaler usage is moved into QualityScalerResource.

This takes us one step closer to separate the act of detecting
overuse/underuse of a resource and the logic of what to do when
overuse/underuse happens.

Follow-up CLs should build on this in order to materialize the concept
of having resources, streams and a central decision-maker deciding how
to reconfigure the streams based on resource usage state.

Bug: webrtc:11222
Change-Id: I99a08a42218a871db8f477f31447a6379433ad05
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168057
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30468}
2020-02-06 11:29:02 +00:00
e331a122aa Move quality rampup experiment to overuse module
Bug: webrtc:11222
Change-Id: I8d0860bfe8bdfe0a051f5a6165cdcfa0cc25cfb5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168181
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#30465}
2020-02-06 08:38:39 +00:00
7c3a1fc082 Move initial quality experiment to adaptation module
Bug: webrtc:11222
Change-Id: Iaa33bd6369a11f91e677b015eb2db412d0fbff23
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/168053
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#30456}
2020-02-05 10:10:22 +00:00