Add PeerConnectionInterface::UpdateCallBitrate.

webrtc/pc/peerconnection.cc

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1217 matching lines @@
           kEnumCounterAddressFamily, kPeerConnection_IPv6,
           kPeerConnectionAddressFamilyCounter_Max);
     } else {
       uma_observer_->IncrementEnumCounter(
           kEnumCounterAddressFamily, kPeerConnection_IPv4,
           kPeerConnectionAddressFamilyCounter_Max);
     }
   }
 }
 
+void PeerConnection::UpdateCallBitrate(const BitrateUpdate& update) {
+  factory_->worker_thread()->Invoke<void>(
+      RTC_FROM_HERE,
+      rtc::Bind(&PeerConnection::UpdateCallBitrate_w, this, update));
+}
+
+void PeerConnection::UpdateCallBitrate_w(const BitrateUpdate& update) {
+  Call::Config::BitrateConfigMask mask;
+  mask.min_bitrate_bps = update.min_bitrate_bps;
+  mask.start_bitrate_bps = update.start_bitrate_bps;
+  mask.max_bitrate_bps = update.max_bitrate_bps;
+
+  if (media_controller_) {
+    Call* call = media_controller_->call_w();
+    call->UpdateBitrateConfig(mask);
+  } else {
+    LOG_F(LS_ERROR) << "media_controller_ is NULL.";

[stefan-webrtc, 2017/04/10 13:26:58]

Can we simply DCHECK on this instead, or is it possible for a user to provoke
this?

[Zach Stein, 2017/04/10 22:27:53]

The user can only hit this if they call UpdateCallBitrate before Initialize - so
it shouldn't ever happen, but if we only have a DCHECK we could dereference a
nullptr, so I think this is the right thing to do.

+  }
+}
+
 bool PeerConnection::StartRtcEventLog(rtc::PlatformFile file,
                                       int64_t max_size_bytes) {
   return factory_->worker_thread()->Invoke<bool>(
       RTC_FROM_HERE, rtc::Bind(&PeerConnection::StartRtcEventLog_w, this, file,
                                max_size_bytes));
 }
 
 void PeerConnection::StopRtcEventLog() {
   factory_->worker_thread()->Invoke<void>(
       RTC_FROM_HERE, rtc::Bind(&PeerConnection::StopRtcEventLog_w, this));
@@ skipping 1060 matching lines @@
   }
   return event_log_->StartLogging(file, max_size_bytes);
 }
 
 void PeerConnection::StopRtcEventLog_w() {
   if (event_log_) {
     event_log_->StopLogging();
   }
 }
 }  // namespace webrtc