blob: cb92f37f8f48683da079a560869bd54248b8f7ed [file] [log] [blame]
* 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 <deque>
#include <string>
#include "modules/audio_coding/neteq/include/neteq.h"
#include "rtc_base/constructor_magic.h"
namespace webrtc {
class DelayManager;
// This class handles various network statistics in NetEq.
class StatisticsCalculator {
virtual ~StatisticsCalculator();
// Resets most of the counters.
void Reset();
// Resets the counters that are not handled by Reset().
void ResetMcu();
// Reports that |num_samples| samples were produced through expansion, and
// that the expansion produced other than just noise samples.
void ExpandedVoiceSamples(size_t num_samples, bool is_new_concealment_event);
// Reports that |num_samples| samples were produced through expansion, and
// that the expansion produced only noise samples.
void ExpandedNoiseSamples(size_t num_samples, bool is_new_concealment_event);
// Corrects the statistics for number of samples produced through non-noise
// expansion by adding |num_samples| (negative or positive) to the current
// value. The result is capped to zero to avoid negative values.
void ExpandedVoiceSamplesCorrection(int num_samples);
// Same as ExpandedVoiceSamplesCorrection but for noise samples.
void ExpandedNoiseSamplesCorrection(int num_samples);
// Reports that |num_samples| samples were produced through preemptive
// expansion.
void PreemptiveExpandedSamples(size_t num_samples);
// Reports that |num_samples| samples were removed through accelerate.
void AcceleratedSamples(size_t num_samples);
// Reports that |num_samples| zeros were inserted into the output.
void AddZeros(size_t num_samples);
// Reports that |num_packets| packets were discarded.
virtual void PacketsDiscarded(size_t num_packets);
// Reports that |num_packets| packets samples were discarded.
virtual void SecondaryPacketsDiscarded(size_t num_samples);
// Reports that |num_samples| were lost.
void LostSamples(size_t num_samples);
// Increases the report interval counter with |num_samples| at a sample rate
// of |fs_hz|. This is how the StatisticsCalculator gets notified that current
// time is increasing.
void IncreaseCounter(size_t num_samples, int fs_hz);
// Update jitter buffer delay counter.
void JitterBufferDelay(size_t num_samples, uint64_t waiting_time_ms);
// Stores new packet waiting time in waiting time statistics.
void StoreWaitingTime(int waiting_time_ms);
// Reports that |num_samples| samples were decoded from secondary packets.
void SecondaryDecodedSamples(int num_samples);
// Reports that the packet buffer was flushed.
void FlushedPacketBuffer();
// Reports that the jitter buffer received a packet.
void ReceivedPacket();
// Reports that a received packet was delayed by |delay_ms| milliseconds.
virtual void RelativePacketArrivalDelay(size_t delay_ms);
// Logs a delayed packet outage event of |num_samples| expanded at a sample
// rate of |fs_hz|. A delayed packet outage event is defined as an expand
// period caused not by an actual packet loss, but by a delayed packet.
virtual void LogDelayedPacketOutageEvent(int num_samples, int fs_hz);
// Returns the current network statistics in |stats|. The current sample rate
// is |fs_hz|, the total number of samples in packet buffer and sync buffer
// yet to play out is |num_samples_in_buffers|, and the number of samples per
// packet is |samples_per_packet|. The method does not populate
// |preferred_buffer_size_ms|, |jitter_peaks_found| or |clockdrift_ppm|; use
// the PopulateDelayManagerStats method for those.
void GetNetworkStatistics(int fs_hz,
size_t num_samples_in_buffers,
size_t samples_per_packet,
NetEqNetworkStatistics* stats);
// Populates |preferred_buffer_size_ms|, |jitter_peaks_found| and
// |clockdrift_ppm| in |stats|. This is a convenience method, and does not
// strictly have to be in the StatisticsCalculator class, but it makes sense
// since all other stats fields are populated by that class.
static void PopulateDelayManagerStats(int ms_per_packet,
const DelayManager& delay_manager,
NetEqNetworkStatistics* stats);
// Returns a copy of this class's lifetime statistics. These statistics are
// never reset.
NetEqLifetimeStatistics GetLifetimeStatistics() const;
NetEqOperationsAndState GetOperationsAndState() const;
static const int kMaxReportPeriod = 60; // Seconds before auto-reset.
static const size_t kLenWaitingTimes = 100;
class PeriodicUmaLogger {
PeriodicUmaLogger(const std::string& uma_name,
int report_interval_ms,
int max_value);
virtual ~PeriodicUmaLogger();
void AdvanceClock(int step_ms);
void LogToUma(int value) const;
virtual int Metric() const = 0;
virtual void Reset() = 0;
const std::string uma_name_;
const int report_interval_ms_;
const int max_value_;
int timer_ = 0;
class PeriodicUmaCount final : public PeriodicUmaLogger {
PeriodicUmaCount(const std::string& uma_name,
int report_interval_ms,
int max_value);
~PeriodicUmaCount() override;
void RegisterSample();
int Metric() const override;
void Reset() override;
int counter_ = 0;
class PeriodicUmaAverage final : public PeriodicUmaLogger {
PeriodicUmaAverage(const std::string& uma_name,
int report_interval_ms,
int max_value);
~PeriodicUmaAverage() override;
void RegisterSample(int value);
int Metric() const override;
void Reset() override;
double sum_ = 0.0;
int counter_ = 0;
// Corrects the concealed samples counter in lifetime_stats_. The value of
// num_samples_ is added directly to the stat if the correction is positive.
// If the correction is negative, it is cached and will be subtracted against
// future additions to the counter. This is meant to be called from
// Expanded{Voice,Noise}Samples{Correction}.
void ConcealedSamplesCorrection(int num_samples, bool is_voice);
// Calculates numerator / denominator, and returns the value in Q14.
static uint16_t CalculateQ14Ratio(size_t numerator, uint32_t denominator);
NetEqLifetimeStatistics lifetime_stats_;
NetEqOperationsAndState operations_and_state_;
size_t concealed_samples_correction_ = 0;
size_t voice_concealed_samples_correction_ = 0;
size_t preemptive_samples_;
size_t accelerate_samples_;
size_t added_zero_samples_;
size_t expanded_speech_samples_;
size_t expanded_noise_samples_;
size_t discarded_packets_;
size_t lost_timestamps_;
uint32_t timestamps_since_last_report_;
std::deque<int> waiting_times_;
uint32_t secondary_decoded_samples_;
size_t discarded_secondary_packets_;
PeriodicUmaCount delayed_packet_outage_counter_;
PeriodicUmaAverage excess_buffer_delay_;
PeriodicUmaCount buffer_full_counter_;
} // namespace webrtc