Initialize VideoEncoder objects asynchronously.

webrtc/modules/video_coding/video_sender.cc

 /*
  *  Copyright (c) 2013 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 131 matching lines @@
                             numLayers, maxPayloadSize);
   return VCM_OK;
 }
 
 // Register an external decoder object.
 // This can not be used together with external decoder callbacks.
 void VideoSender::RegisterExternalEncoder(VideoEncoder* externalEncoder,
                                           uint8_t payloadType,
                                           bool internalSource /*= false*/) {
   RTC_DCHECK(main_thread_.CalledOnValidThread());
-
   rtc::CritScope lock(&encoder_crit_);
 
   if (externalEncoder == nullptr) {
     bool wasSendCodec = false;
     RTC_CHECK(
         _codecDataBase.DeregisterExternalEncoder(payloadType, &wasSendCodec));
     if (wasSendCodec) {
       // Make sure the VCM doesn't use the de-registered codec
       rtc::CritScope params_lock(&params_crit_);
       _encoder = nullptr;
@@ skipping 210 matching lines @@
   // 10 kbps.
   int window_bps = std::max(threshold_bps / 10, 10000);
   _mediaOpt.SuspendBelowMinBitrate(threshold_bps, window_bps);
 }
 
 bool VideoSender::VideoSuspended() const {
   return _mediaOpt.IsVideoSuspended();
 }
 }  // namespace vcm
 }  // namespace webrtc