Movable support for VideoReceiveStream::Config and avoid copies

webrtc/call/call.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 58 matching lines @@
       const webrtc::AudioReceiveStream::Config& config) override;
   void DestroyAudioReceiveStream(
       webrtc::AudioReceiveStream* receive_stream) override;
 
   webrtc::VideoSendStream* CreateVideoSendStream(
       const webrtc::VideoSendStream::Config& config,
       const VideoEncoderConfig& encoder_config) override;
   void DestroyVideoSendStream(webrtc::VideoSendStream* send_stream) override;
 
   webrtc::VideoReceiveStream* CreateVideoReceiveStream(
-      const webrtc::VideoReceiveStream::Config& config) override;
+      webrtc::VideoReceiveStream::Config configuration) override;
   void DestroyVideoReceiveStream(
       webrtc::VideoReceiveStream* receive_stream) override;
 
   Stats GetStats() const override;
 
   DeliveryStatus DeliverPacket(MediaType media_type,
                                const uint8_t* packet,
                                size_t length,
                                const PacketTime& packet_time) override;
 
@@ skipping 369 matching lines @@
        it != rtp_state.end();
        ++it) {
     suspended_video_send_ssrcs_[it->first] = it->second;
   }
 
   UpdateAggregateNetworkState();
   delete send_stream_impl;
 }
 
 webrtc::VideoReceiveStream* Call::CreateVideoReceiveStream(
-    const webrtc::VideoReceiveStream::Config& config) {
+    webrtc::VideoReceiveStream::Config configuration) {
   TRACE_EVENT0("webrtc", "Call::CreateVideoReceiveStream");
   RTC_DCHECK(configuration_thread_checker_.CalledOnValidThread());
   VideoReceiveStream* receive_stream = new VideoReceiveStream(
-      num_cpu_cores_, congestion_controller_.get(), config, voice_engine(),
-      module_process_thread_.get(), call_stats_.get(), &remb_);
+      num_cpu_cores_, congestion_controller_.get(), std::move(configuration),
+      voice_engine(), module_process_thread_.get(), call_stats_.get(), &remb_);
+
+  const webrtc::VideoReceiveStream::Config& config = receive_stream->config();
   {
     WriteLockScoped write_lock(*receive_crit_);
     RTC_DCHECK(video_receive_ssrcs_.find(config.rtp.remote_ssrc) ==
                video_receive_ssrcs_.end());
     video_receive_ssrcs_[config.rtp.remote_ssrc] = receive_stream;
     // TODO(pbos): Configure different RTX payloads per receive payload.
     VideoReceiveStream::Config::Rtp::RtxMap::const_iterator it =
         config.rtp.rtx.begin();
     if (it != config.rtp.rtx.end())
       video_receive_ssrcs_[it->second.ssrc] = receive_stream;
@@ skipping 363 matching lines @@
   // thread. Then this check can be enabled.
   // RTC_DCHECK(!configuration_thread_checker_.CalledOnValidThread());
   if (RtpHeaderParser::IsRtcp(packet, length))
     return DeliverRtcp(media_type, packet, length);
 
   return DeliverRtp(media_type, packet, length, packet_time);
 }
 
 }  // namespace internal
 }  // namespace webrtc