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110 lines
3.7 KiB
C++
110 lines
3.7 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_STATISTICS_CALCULATOR_H_
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#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_STATISTICS_CALCULATOR_H_
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#include <vector>
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#include "webrtc/base/constructormagic.h"
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#include "webrtc/modules/audio_coding/neteq/interface/neteq.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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// Forward declarations.
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class DecisionLogic;
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class DelayManager;
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// This class handles various network statistics in NetEq.
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class StatisticsCalculator {
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public:
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StatisticsCalculator();
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virtual ~StatisticsCalculator() {}
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// Resets most of the counters.
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void Reset();
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// Resets the counters that are not handled by Reset().
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void ResetMcu();
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// Resets the waiting time statistics.
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void ResetWaitingTimeStatistics();
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// Reports that |num_samples| samples were produced through expansion, and
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// that the expansion produced other than just noise samples.
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void ExpandedVoiceSamples(int num_samples);
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// Reports that |num_samples| samples were produced through expansion, and
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// that the expansion produced only noise samples.
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void ExpandedNoiseSamples(int num_samples);
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// Reports that |num_samples| samples were produced through preemptive
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// expansion.
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void PreemptiveExpandedSamples(int num_samples);
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// Reports that |num_samples| samples were removed through accelerate.
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void AcceleratedSamples(int num_samples);
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// Reports that |num_samples| zeros were inserted into the output.
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void AddZeros(int num_samples);
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// Reports that |num_packets| packets were discarded.
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void PacketsDiscarded(int num_packets);
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// Reports that |num_samples| were lost.
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void LostSamples(int num_samples);
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// Increases the report interval counter with |num_samples| at a sample rate
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// of |fs_hz|.
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void IncreaseCounter(int num_samples, int fs_hz);
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// Stores new packet waiting time in waiting time statistics.
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void StoreWaitingTime(int waiting_time_ms);
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// Returns the current network statistics in |stats|. The current sample rate
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// is |fs_hz|, the total number of samples in packet buffer and sync buffer
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// yet to play out is |num_samples_in_buffers|, and the number of samples per
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// packet is |samples_per_packet|.
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void GetNetworkStatistics(int fs_hz,
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int num_samples_in_buffers,
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int samples_per_packet,
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const DelayManager& delay_manager,
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const DecisionLogic& decision_logic,
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NetEqNetworkStatistics *stats);
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void WaitingTimes(std::vector<int>* waiting_times);
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private:
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static const int kMaxReportPeriod = 60; // Seconds before auto-reset.
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static const int kLenWaitingTimes = 100;
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// Calculates numerator / denominator, and returns the value in Q14.
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static int CalculateQ14Ratio(uint32_t numerator, uint32_t denominator);
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uint32_t preemptive_samples_;
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uint32_t accelerate_samples_;
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int added_zero_samples_;
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uint32_t expanded_voice_samples_;
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uint32_t expanded_noise_samples_;
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int discarded_packets_;
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uint32_t lost_timestamps_;
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uint32_t last_report_timestamp_;
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int waiting_times_[kLenWaitingTimes]; // Used as a circular buffer.
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int len_waiting_times_;
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int next_waiting_time_index_;
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DISALLOW_COPY_AND_ASSIGN(StatisticsCalculator);
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_STATISTICS_CALCULATOR_H_
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