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Split WebRTC-UseShortVP8TL3Pattern field trial in two.

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- WebRTC-UseShortVP8TL3Pattern: Use a temporal pattern of length 4.
- WebRTC-UseBaseHeavyVP8TL3RateAllocation: Allocate 60/20/20 to the TLs.

Bug: webrtc:9477
Change-Id: Ib22d74c9390273e6498d417354d2cd311d9439b9
Reviewed-on: https://webrtc-review.googlesource.com/102920
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24924}
This commit is contained in:
Rasmus Brandt
2018-10-02 11:12:52 +02:00
committed by Commit Bot
parent 9551375c02
commit 73d117f64e
4 changed files with 108 additions and 40 deletions
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6
modules/video_coding/utility/simulcast_rate_allocator.cc
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@ -32,7 +32,7 @@ static const float
{0.25f, 0.4f, 0.6f, 1.0f} // 4 layers {25%, 15%, 20%, 40%}
};
static const float kShort3TlRateAllocation[kMaxTemporalStreams] = {
static const float kBaseHeavy3TlRateAllocation[kMaxTemporalStreams] = {
0.6f, 0.8f, 1.0f, 1.0f // 3 layers {60%, 20%, 20%}
};
@ -74,8 +74,8 @@ float SimulcastRateAllocator::GetTemporalRateAllocation(int num_layers,
RTC_CHECK_GE(temporal_id, 0);
RTC_CHECK_LT(temporal_id, num_layers);
if (num_layers == 3 &&
field_trial::IsEnabled("WebRTC-UseShortVP8TL3Pattern")) {
return kShort3TlRateAllocation[temporal_id];
field_trial::IsEnabled("WebRTC-UseBaseHeavyVP8TL3RateAllocation")) {
return kBaseHeavy3TlRateAllocation[temporal_id];
}
return kLayerRateAllocation[num_layers - 1][temporal_id];
}