commit 950d6b9b2a2af1dde6a407df25993bd32019becc
author Eldar Rello <elrello@microsoft.com> Tue Apr 06 19:38:00 2021
committer Commit Bot <commit-bot@chromium.org> Tue Apr 06 21:02:19 2021
tree 1fd351e40c76e29a906a830bc7402cdab10765be
parent 03bce3f49d84f4f88d8eca3450837cb26a272dd1

Add rollback for send encodings

Bug: chromium:1188398
Change-Id: I9491426cd4a3983c7065f18af3c843d498eeafe1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214121
Commit-Queue: Eldar Rello <elrello@microsoft.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33630}

pc/sdp_offer_answer.cc

diff --git a/pc/sdp_offer_answer.cc b/pc/sdp_offer_answer.cc
index 293c5cb..1381bf9 100644
--- a/pc/sdp_offer_answer.cc
+++ b/pc/sdp_offer_answer.cc
@@ -1423,8 +1423,15 @@
         const std::vector<StreamParams>& streams = channel->local_streams();
         transceiver->internal()->sender_internal()->set_stream_ids(
             streams[0].stream_ids());
+        auto encodings =
+            transceiver->internal()->sender_internal()->init_send_encodings();
         transceiver->internal()->sender_internal()->SetSsrc(
             streams[0].first_ssrc());
+        if (!encodings.empty()) {
+          transceivers()
+              ->StableState(transceiver)
+              ->SetInitSendEncodings(encodings);
+        }
       }
     }
   } else {
@@ -2722,6 +2729,10 @@
         transceivers()->Remove(transceiver);
       }
     }
+    if (state.init_send_encodings()) {
+      transceiver->internal()->sender_internal()->set_init_send_encodings(
+          state.init_send_encodings().value());
+    }
     transceiver->internal()->sender_internal()->set_transport(nullptr);
     transceiver->internal()->receiver_internal()->set_transport(nullptr);
     transceiver->internal()->set_mid(state.mid());