In screenshare mode, suppress VP8 bitrate overshoot and increase quality

webrtc/modules/video_coding/codecs/vp8/simulcast_encoder_adapter.cc

 /*
  *  Copyright (c) 2014 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 84 matching lines @@
 const float kTl1MaxTimeToDropFrames = 20.0f;
 
 struct ScreenshareTemporalLayersFactory : webrtc::TemporalLayers::Factory {
   ScreenshareTemporalLayersFactory()
       : tl1_frame_dropper_(kTl1MaxTimeToDropFrames) {}
 
   virtual ~ScreenshareTemporalLayersFactory() {}
 
   virtual webrtc::TemporalLayers* Create(int num_temporal_layers,
                                          uint8_t initial_tl0_pic_idx) const {
-    return new webrtc::ScreenshareLayers(num_temporal_layers,
-                                         rand(),
-                                         &tl0_frame_dropper_,
-                                         &tl1_frame_dropper_);
+    return new webrtc::ScreenshareLayers(num_temporal_layers, rand());
   }
 
   mutable webrtc::FrameDropper tl0_frame_dropper_;
   mutable webrtc::FrameDropper tl1_frame_dropper_;
 };
 
 // An EncodedImageCallback implementation that forwards on calls to a
 // SimulcastEncoderAdapter, but with the stream index it's registered with as
 // the first parameter to Encoded.
 class AdapterEncodedImageCallback : public webrtc::EncodedImageCallback {
@@ skipping 382 matching lines @@
 
 bool SimulcastEncoderAdapter::Initialized() const {
   return !streaminfos_.empty();
 }
 
 void SimulcastEncoderAdapter::OnDroppedFrame() {
   streaminfos_[0].encoder->OnDroppedFrame();
 }
 
 }  // namespace webrtc