NetEq: Implement counting of Delayed Packet Outage Events per minute

webrtc/modules/audio_coding/neteq/statistics_calculator.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/modules/audio_coding/neteq/statistics_calculator.h"
 
 #include <assert.h>
 #include <string.h>  // memset
 
+#include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_coding/neteq/decision_logic.h"
 #include "webrtc/modules/audio_coding/neteq/delay_manager.h"
 #include "webrtc/system_wrappers/interface/metrics.h"
 
 namespace webrtc {
 
+void StatisticsCalculator::DelayedPacketOutagesPerMinuteCounter::
+    RegisterEvent() {
+  ++counter_;
+}
+
+void StatisticsCalculator::DelayedPacketOutagesPerMinuteCounter::AdvanceClock(
+    int step_ms) {
+  timer_ += step_ms;
+  if (timer_ < kReportIntervalMs) {
+    return;
+  }
+  LogToUma();
+  counter_ = 0;
+  timer_ -= kReportIntervalMs;
+  DCHECK_GE(timer_, 0);
+}
+
+void StatisticsCalculator::DelayedPacketOutagesPerMinuteCounter::LogToUma()
+    const {
+  RTC_HISTOGRAM_COUNTS_100("WebRTC.Audio.DelayedPacketOutageEventsPerMinute",
+                           counter_);
+}
+
 StatisticsCalculator::StatisticsCalculator()
     : preemptive_samples_(0),
       accelerate_samples_(0),
       added_zero_samples_(0),
       expanded_speech_samples_(0),
       expanded_noise_samples_(0),
       discarded_packets_(0),
       lost_timestamps_(0),
       timestamps_since_last_report_(0),
       len_waiting_times_(0),
@@ skipping 45 matching lines @@
 
 void StatisticsCalculator::PacketsDiscarded(int num_packets) {
   discarded_packets_ += num_packets;
 }
 
 void StatisticsCalculator::LostSamples(int num_samples) {
   lost_timestamps_ += num_samples;
 }
 
 void StatisticsCalculator::IncreaseCounter(int num_samples, int fs_hz) {
+  delayed_packet_outage_counter_.AdvanceClock(
+      rtc::CheckedDivExact(1000 * num_samples, fs_hz));
   timestamps_since_last_report_ += static_cast<uint32_t>(num_samples);
   if (timestamps_since_last_report_ >
       static_cast<uint32_t>(fs_hz * kMaxReportPeriod)) {
     lost_timestamps_ = 0;
     timestamps_since_last_report_ = 0;
     discarded_packets_ = 0;
   }
 }
 
 void StatisticsCalculator::SecondaryDecodedSamples(int num_samples) {
   secondary_decoded_samples_ += num_samples;
 }
 
 void StatisticsCalculator::LogDelayedPacketOutageEvent(int outage_duration_ms) {
   RTC_HISTOGRAM_COUNTS("WebRTC.Audio.DelayedPacketOutageEventMs",
                        outage_duration_ms, 1 /* min */, 2000 /* max */,
                        100 /* bucket count */);
+  delayed_packet_outage_counter_.RegisterEvent();
 }
 
 void StatisticsCalculator::StoreWaitingTime(int waiting_time_ms) {
   assert(next_waiting_time_index_ < kLenWaitingTimes);
   waiting_times_[next_waiting_time_index_] = waiting_time_ms;
   next_waiting_time_index_++;
   if (next_waiting_time_index_ >= kLenWaitingTimes) {
     next_waiting_time_index_ = 0;
   }
   if (len_waiting_times_ < kLenWaitingTimes) {
@@ skipping 69 matching lines @@
     // Ratio must be smaller than 1 in Q14.
     assert((numerator << 14) / denominator < (1 << 14));
     return static_cast<uint16_t>((numerator << 14) / denominator);
   } else {
     // Will not produce a ratio larger than 1, since this is probably an error.
     return 1 << 14;
   }
 }
 
 }  // namespace webrtc