Make LoadObserver settable per video send stream. Gives client flexibility and makes the implementa…

webrtc/video/video_send_stream.h

 /*
  *  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 10 matching lines @@
 #include "webrtc/video/send_statistics_proxy.h"
 #include "webrtc/video/transport_adapter.h"
 #include "webrtc/video/video_capture_input.h"
 #include "webrtc/video_receive_stream.h"
 #include "webrtc/video_send_stream.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
 
 namespace webrtc {
 
 class ChannelGroup;
-class CpuOveruseObserver;
 class ProcessThread;
 class ViEChannel;
 class ViEEncoder;
 
 namespace internal {
 
-class VideoSendStream : public webrtc::VideoSendStream {
+class VideoSendStream : public webrtc::VideoSendStream,
+                        public webrtc::CpuOveruseObserver {
  public:
-  VideoSendStream(CpuOveruseObserver* overuse_observer,
-                  int num_cpu_cores,
+  VideoSendStream(int num_cpu_cores,
                   ProcessThread* module_process_thread,
                   ChannelGroup* channel_group,
                   int channel_id,
                   const VideoSendStream::Config& config,
                   const VideoEncoderConfig& encoder_config,
                   const std::map<uint32_t, RtpState>& suspended_ssrcs);
 
   ~VideoSendStream() override;
 
   // webrtc::SendStream implementation.
   void Start() override;
   void Stop() override;
   void SignalNetworkState(NetworkState state) override;
   bool DeliverRtcp(const uint8_t* packet, size_t length) override;
 
   // webrtc::VideoSendStream implementation.
   VideoCaptureInput* Input() override;
   bool ReconfigureVideoEncoder(const VideoEncoderConfig& config) override;
   Stats GetStats() override;
 
+  // webrtc::CpuOveruseObserver implementation.
+  void OveruseDetected() override;
+  void NormalUsage() override;
+
   typedef std::map<uint32_t, RtpState> RtpStateMap;
   RtpStateMap GetRtpStates() const;
 
   int64_t GetRtt() const;
 
  private:
   bool SetSendCodec(VideoCodec video_codec);
   void ConfigureSsrcs();
   TransportAdapter transport_adapter_;
   EncodedFrameCallbackAdapter encoded_frame_proxy_;
@@ skipping 13 matching lines @@
   // start bitrate initially, instead of the one reported by VideoEngine (which
   // defaults to too high).
   bool use_config_bitrate_;
 
   SendStatisticsProxy stats_proxy_;
 };
 }  // namespace internal
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_SEND_STREAM_H_