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8037fc6ffa
Bug: webrtc:342905193 No-Try: True Change-Id: Icc968be43b8830038ea9a1f5f604307220457807 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/361021 Auto-Submit: Florent Castelli <orphis@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Florent Castelli <orphis@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42911}
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
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* Copyright (c) 2021 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 MODULES_AUDIO_CODING_NETEQ_UNDERRUN_OPTIMIZER_H_
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#define MODULES_AUDIO_CODING_NETEQ_UNDERRUN_OPTIMIZER_H_
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#include <memory>
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#include <optional>
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#include "api/neteq/tick_timer.h"
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#include "modules/audio_coding/neteq/histogram.h"
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namespace webrtc {
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// Estimates probability of buffer underrun due to late packet arrival.
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// The optimal delay is decided such that the probability of underrun is lower
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// than 1 - `histogram_quantile`.
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class UnderrunOptimizer {
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public:
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UnderrunOptimizer(const TickTimer* tick_timer,
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int histogram_quantile,
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int forget_factor,
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std::optional<int> start_forget_weight,
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std::optional<int> resample_interval_ms);
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void Update(int relative_delay_ms);
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std::optional<int> GetOptimalDelayMs() const { return optimal_delay_ms_; }
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void Reset();
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private:
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const TickTimer* tick_timer_;
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Histogram histogram_;
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const int histogram_quantile_; // In Q30.
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const std::optional<int> resample_interval_ms_;
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std::unique_ptr<TickTimer::Stopwatch> resample_stopwatch_;
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int max_delay_in_interval_ms_ = 0;
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std::optional<int> optimal_delay_ms_;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_CODING_NETEQ_UNDERRUN_OPTIMIZER_H_
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