Round Rate computations from RateTracker.

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.
  */
 
 #include "webrtc/video/send_statistics_proxy.h"
 
 #include <algorithm>
+#include <cmath>
 #include <map>
 
 #include "webrtc/base/checks.h"
 
 #include "webrtc/base/logging.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 
 namespace webrtc {
 namespace {
@@ skipping 39 matching lines @@
       max_sent_height_per_timestamp_(0) {
   UpdateCodecTypeHistogram(config_.encoder_settings.payload_name);
 }
 
 SendStatisticsProxy::~SendStatisticsProxy() {
   UpdateHistograms();
 }
 
 void SendStatisticsProxy::UpdateHistograms() {
   int input_fps =
-      static_cast<int>(input_frame_rate_tracker_.ComputeTotalRate());
+      round(input_frame_rate_tracker_.ComputeTotalRate());
   if (input_fps > 0)
     RTC_HISTOGRAM_COUNTS_100("WebRTC.Video.InputFramesPerSecond", input_fps);
   int sent_fps =
-      static_cast<int>(sent_frame_rate_tracker_.ComputeTotalRate());
+      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);
   if (in_width != -1) {
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.InputWidthInPixels", in_width);
     RTC_HISTOGRAM_COUNTS_10000("WebRTC.Video.InputHeightInPixels", in_height);
   }
@@ skipping 60 matching lines @@
 
 void SendStatisticsProxy::OnSuspendChange(bool is_suspended) {
   rtc::CritScope lock(&crit_);
   stats_.suspended = is_suspended;
 }
 
 VideoSendStream::Stats SendStatisticsProxy::GetStats() {
   rtc::CritScope lock(&crit_);
   PurgeOldStats();
   stats_.input_frame_rate =
-      static_cast<int>(input_frame_rate_tracker_.ComputeRate());
+      round(input_frame_rate_tracker_.ComputeRate());
   return stats_;
 }
 
 void SendStatisticsProxy::PurgeOldStats() {
   int64_t old_stats_ms = clock_->TimeInMilliseconds() - kStatsTimeoutMs;
   for (std::map<uint32_t, VideoSendStream::StreamStats>::iterator it =
            stats_.substreams.begin();
        it != stats_.substreams.end(); ++it) {
     uint32_t ssrc = it->first;
     if (update_times_[ssrc].resolution_update_ms <= old_stats_ms) {
@@ skipping 210 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