Movable support for VideoReceiveStream::Config and avoid copies

webrtc/video/video_receive_stream.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 129 matching lines @@
       Call::Config::kDefaultStartBitrateBps / 1000;
 
   return codec;
 }
 }  // namespace
 
 namespace internal {
 VideoReceiveStream::VideoReceiveStream(
     int num_cpu_cores,
     CongestionController* congestion_controller,
-    const VideoReceiveStream::Config& config,
+    VideoReceiveStream::Config config,
     webrtc::VoiceEngine* voice_engine,
     ProcessThread* process_thread,
     CallStats* call_stats,
     VieRemb* remb)
     : transport_adapter_(config.rtcp_send_transport),
       encoded_frame_proxy_(config.pre_decode_callback),
-      config_(config),
+      config_(std::move(config)),
       process_thread_(process_thread),
       clock_(Clock::GetRealTimeClock()),
       decode_thread_(DecodeThreadFunction, this, "DecodingThread"),
       congestion_controller_(congestion_controller),
       call_stats_(call_stats),
       video_receiver_(clock_, nullptr, this, this, this),
-      incoming_video_stream_(config.disable_prerenderer_smoothing),
-      stats_proxy_(config_, clock_),
+      incoming_video_stream_(config_.disable_prerenderer_smoothing),
+      stats_proxy_(&config_, clock_),
       rtp_stream_receiver_(&video_receiver_,
                            congestion_controller_->GetRemoteBitrateEstimator(
                                UseSendSideBwe(config_)),
                            &transport_adapter_,
                            call_stats_->rtcp_rtt_stats(),
                            congestion_controller_->pacer(),
                            congestion_controller_->packet_router(),
                            remb,
-                           config,
+                           &config_,
                            &stats_proxy_,
                            process_thread_),
       video_stream_decoder_(&video_receiver_,
                             &rtp_stream_receiver_,
                             &rtp_stream_receiver_,
                             rtp_stream_receiver_.IsRetransmissionsEnabled(),
                             rtp_stream_receiver_.IsFecEnabled(),
                             &stats_proxy_,
                             &incoming_video_stream_,
                             config.pre_render_callback),
@@ skipping 161 matching lines @@
     const std::vector<uint16_t>& sequence_numbers) {
   rtp_stream_receiver_.RequestPacketRetransmit(sequence_numbers);
 }
 
 void VideoReceiveStream::RequestKeyFrame() {
   rtp_stream_receiver_.RequestKeyFrame();
 }
 
 }  // namespace internal
 }  // namespace webrtc