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/*
* Copyright (c) 2021 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.
*/
#ifndef MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_
#define MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_
#include <optional>
#include "modules/audio_coding/neteq/histogram.h"
namespace webrtc {
// Calculates an optimal delay to reduce the chance of missing reordered
// packets. The delay/loss trade-off can be tune using the `ms_per_loss_percent`
// parameter.
class ReorderOptimizer {
public:
ReorderOptimizer(int forget_factor,
int ms_per_loss_percent,
std::optional<int> start_forget_weight);
void Update(int relative_delay_ms, bool reordered, int base_delay_ms);
std::optional<int> GetOptimalDelayMs() const { return optimal_delay_ms_; }
void Reset();
private:
int MinimizeCostFunction(int base_delay_ms) const;
Histogram histogram_;
const int ms_per_loss_percent_;
std::optional<int> optimal_delay_ms_;
};
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_
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