commit 8b9b5f98db5ed8ac53114e012254e79fe696073b
author Sergey Silkin <ssilkin@webrtc.org> Mon Dec 10 09:28:53 2018 +0100
committer Commit Bot <commit-bot@chromium.org> Mon Dec 10 12:55:51 2018 +0000
tree fcf1a1859f2a8fce914f5fae0759542bfafd95b9
parent b47ccc38e771ecb37002c82e6b4d4129603ca3be

Activate/deactivate VP9 spatial layers.

* Stop encoding spatial layers S(n >= N) if application deactivates
spatial layer N by setting RTCRtpEncodingParameters.active = false.

* Move calculation of padding bitrate to SvcRateAllocator class.

* Pad up to minimum required bitrate of base layer if ALR probing is
enabled.

Bug: webrtc:9350
Change-Id: I398284c943d43348def535c83263fc234c9767fa
Reviewed-on: https://webrtc-review.googlesource.com/c/113240
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25945}

modules/video_coding/video_codec_initializer.cc

diff --git a/modules/video_coding/video_codec_initializer.cc b/modules/video_coding/video_codec_initializer.cc
index cd3f1d7..311fb86 100644
--- a/modules/video_coding/video_codec_initializer.cc
+++ b/modules/video_coding/video_codec_initializer.cc
@@ -192,6 +192,14 @@
           spatial_layers.back().minBitrate = video_codec.minBitrate;
           spatial_layers.back().maxBitrate = video_codec.maxBitrate;
         }
+
+        for (size_t spatial_idx = 0;
+             spatial_idx < config.simulcast_layers.size() &&
+             spatial_idx < spatial_layers.size();
+             ++spatial_idx) {
+          spatial_layers[spatial_layers.size() - spatial_idx - 1].active =
+              config.simulcast_layers[spatial_idx].active;
+        }
       }
 
       RTC_DCHECK(!spatial_layers.empty());