Revert of Remove VCMQmRobustness.

webrtc/modules/video_coding/qm_select.h

 /*
  *  Copyright (c) 2012 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 304 matching lines @@
   EncoderState encoder_state_;
   ResolutionAction action_;
   // Short history of the down-sampling actions from the Initialize() state.
   // This is needed for going up in resolution. Since the total amount of
   // down-sampling actions are constrained, the length of the list need not be
   // large: i.e., (4/3) ^{kDownActionHistorySize} <= kMaxDownSample.
   ResolutionAction down_action_history_[kDownActionHistorySize];
   int num_layers_;
 };
 
+// Robustness settings class.
+
+class VCMQmRobustness : public VCMQmMethod {
+ public:
+  VCMQmRobustness();
+  ~VCMQmRobustness();
+
+  virtual void Reset();
+
+  // Adjust FEC rate based on content: every ~1 sec from SetTargetRates.
+  // Returns an adjustment factor.
+  float AdjustFecFactor(uint8_t code_rate_delta,
+                        float total_rate,
+                        float framerate,
+                        int64_t rtt_time,
+                        uint8_t packet_loss);
+
+  // Set the UEP protection on/off.
+  bool SetUepProtection(uint8_t code_rate_delta,
+                        float total_rate,
+                        uint8_t packet_loss,
+                        bool frame_type);
+
+ private:
+  // Previous state of network parameters.
+  float prev_total_rate_;
+  int64_t prev_rtt_time_;
+  uint8_t prev_packet_loss_;
+  uint8_t prev_code_rate_delta_;
+};
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_VIDEO_CODING_QM_SELECT_H_