In screenshare mode, suppress VP8 bitrate overshoot and increase quality

webrtc/modules/video_coding/codecs/vp8/realtime_temporal_layers.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.
 */
 
 #include <stdlib.h>
@@ skipping 221 matching lines @@
       }
       if (vp8_info->temporalIdx == 0 && timestamp != timestamp_) {
         timestamp_ = timestamp;
         tl0_pic_idx_++;
       }
       last_base_layer_sync_ = base_layer_sync;
       vp8_info->tl0PicIdx = tl0_pic_idx_;
     }
   }
 
-  void FrameEncoded(unsigned int size, uint32_t timestamp) {}
+  void FrameEncoded(unsigned int size, uint32_t timestamp, int qp) override {}
+
+  bool UpdateConfiguration(vpx_codec_enc_cfg_t* cfg) override { return false; }
 
  private:
   int temporal_layers_;
   int max_temporal_layers_;
 
   int tl0_pic_idx_;
   unsigned int frame_counter_;
   uint32_t timestamp_;
   bool last_base_layer_sync_;
 
   // Pattern of temporal layer ids.
   int layer_ids_length_;
   const unsigned int* layer_ids_;
 
   // Pattern of encode flags.
   int encode_flags_length_;
   const int* encode_flags_;
 };
 }  // namespace
 
 TemporalLayers* RealTimeTemporalLayersFactory::Create(
     int max_temporal_layers,
     uint8_t initial_tl0_pic_idx) const {
   return new RealTimeTemporalLayers(max_temporal_layers, initial_tl0_pic_idx);
 }
 }  // namespace webrtc