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Change kDefaultMaximumPreStreamDecoders to 1

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The experiment WebRTC-PreStreamDecoders (aka Lazy decoder creation) has
investigated the benefit of only creating a subset of all decoders
during negotiation and the remaining decoders on demand.

This CL changes the default value to only create one decoder during
negotiation. This frees up hardware resources and reduces the SDP
negotiation time.

Bug: chromium:1202042
Change-Id: I6e2206839162aa857fcc948ccd53d0ff91cbdeaf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231643
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34959}
This commit is contained in:
Johannes Kron
2021-09-09 10:47:41 +02:00
committed by WebRTC LUCI CQ
parent 552c83171b
commit 66e06055f1
1 changed files with 3 additions and 1 deletions
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4
video/video_receive_stream2.cc
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@ -65,7 +65,9 @@ constexpr int kMaxBaseMinimumDelayMs = 10000;
constexpr int kMaxWaitForFrameMs = 3000;
constexpr int kDefaultMaximumPreStreamDecoders = 100;
// Create a decoder for the preferred codec before the stream starts and any
// other decoder lazily on demand.
constexpr int kDefaultMaximumPreStreamDecoders = 1;
// Concrete instance of RecordableEncodedFrame wrapping needed content
// from EncodedFrame.