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Experimental improvements for simulcast screenshare

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* Make shorter 4-frame pattern default if 2 temporal layers are used.
* Make DefaultTemporalLayers usable by upper simulcast stream with 2tl.
* If experimental settings are enable, bump the max bitrate for the top
  stream. Since we're now using probing everywhere the rampup should be
  less of an issue.
* Additionally, fixes an issue in full stack tests, where
  ScopedFieldTrials in an experiment would override the
  --force_fieldtrials specified at command line. Some trials added by
  the test bots caused timeouts without this.

Bug: webrtc:9477
Change-Id: I42410605d416b51c4fbfe5b6b850997484af583c
Reviewed-on: https://webrtc-review.googlesource.com/92883
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24252}
This commit is contained in:
Erik Språng
2018-08-09 16:12:54 +02:00
committed by Commit Bot
parent d2b9740f48
commit b6b1cacd09
7 changed files with 62 additions and 27 deletions
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2
modules/video_coding/utility/simulcast_test_fixture_impl.cc
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@ -778,7 +778,7 @@ void SimulcastTestFixtureImpl::TestSpatioTemporalLayers321PatternEncoder() {
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, NULL));
SetExpectedValues3<int>(2, 1, 255, expected_temporal_idx);
SetExpectedValues3<bool>(false, false, false, expected_layer_sync);
SetExpectedValues3<bool>(false, true, false, expected_layer_sync);
VerifyTemporalIdxAndSyncForAllSpatialLayers(
&encoder_callback, expected_temporal_idx, expected_layer_sync, 3);
}