Add limit for minimum number of required samples before recording input and sent framerate stats.

webrtc/video/send_statistics_proxy.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.
  */
 
@@ skipping 52 matching lines @@
       max_sent_width_per_timestamp_(0),
       max_sent_height_per_timestamp_(0) {
   UpdateCodecTypeHistogram(config_.encoder_settings.payload_name);
 }
 
 SendStatisticsProxy::~SendStatisticsProxy() {
   UpdateHistograms();
 }
 
 void SendStatisticsProxy::UpdateHistograms() {
-  int input_fps =
-      round(input_frame_rate_tracker_.ComputeTotalRate());
-  if (input_fps > 0)
-    RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.InputFramesPerSecond", input_fps);
-  int sent_fps =
-      round(sent_frame_rate_tracker_.ComputeTotalRate());
-  if (sent_fps > 0)
-    RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.SentFramesPerSecond", sent_fps);
-
   const int kMinRequiredSamples = 200;
   int in_width = input_width_counter_.Avg(kMinRequiredSamples);
   int in_height = input_height_counter_.Avg(kMinRequiredSamples);
+  int in_fps = round(input_frame_rate_tracker_.ComputeTotalRate());
   if (in_width != -1) {
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.InputWidthInPixels", in_width);
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.InputHeightInPixels", in_height);
+    RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.InputFramesPerSecond", in_fps);
   }
   int sent_width = sent_width_counter_.Avg(kMinRequiredSamples);
   int sent_height = sent_height_counter_.Avg(kMinRequiredSamples);
+  int sent_fps = round(sent_frame_rate_tracker_.ComputeTotalRate());
   if (sent_width != -1) {
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.SentWidthInPixels", sent_width);
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.SentHeightInPixels", sent_height);
+    RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.SentFramesPerSecond", sent_fps);
   }
   int encode_ms = encode_time_counter_.Avg(kMinRequiredSamples);
   if (encode_ms != -1)
     RTC_HISTOGRAM_COUNTS_1000("WebRTC.Video.EncodeTimeInMs", encode_ms);
 
   int key_frames_permille = key_frame_counter_.Permille(kMinRequiredSamples);
   if (key_frames_permille != -1) {
     RTC_HISTOGRAM_COUNTS_1000("WebRTC.Video.KeyFramesSentInPermille",
         key_frames_permille);
   }
@@ skipping 276 matching lines @@
 }
 
 int SendStatisticsProxy::BoolSampleCounter::Fraction(
     int min_required_samples, float multiplier) const {
   if (num_samples < min_required_samples || num_samples == 0)
     return -1;
   return static_cast<int>((sum * multiplier / num_samples) + 0.5f);
 }
 
 }  // namespace webrtc