Experimental patch for adapting adaptation to CPU count on Mac.

webrtc/video/overuse_frame_detector.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 24 matching lines @@
   // Called as soon as an overuse is detected.
   virtual void OveruseDetected() = 0;
   // Called periodically when the system is not overused any longer.
   virtual void NormalUsage() = 0;
 
  protected:
   virtual ~CpuOveruseObserver() {}
 };
 
 struct CpuOveruseOptions {
-  CpuOveruseOptions()
-      : low_encode_usage_threshold_percent(55),
-        high_encode_usage_threshold_percent(85),
-        frame_timeout_interval_ms(1500),
-        min_frame_samples(120),
-        min_process_count(3),
-        high_threshold_consecutive_count(2) {}
+  CpuOveruseOptions();
 
   int low_encode_usage_threshold_percent;  // Threshold for triggering underuse.
   int high_encode_usage_threshold_percent;  // Threshold for triggering overuse.
   // General settings.
   int frame_timeout_interval_ms;  // The maximum allowed interval between two
                                   // frames before resetting estimations.
   int min_frame_samples;  // The minimum number of frames required.
   int min_process_count;  // The number of initial process times required before
                           // triggering an overuse/underuse.
   int high_threshold_consecutive_count;  // The number of consecutive checks
@@ skipping 102 matching lines @@
   std::list<FrameTiming> frame_timing_ GUARDED_BY(crit_);
 
   rtc::ThreadChecker processing_thread_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(OveruseFrameDetector);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_OVERUSE_FRAME_DETECTOR_H_