reorder_optimizer.h

Enable keyboard shortcuts

/*

 *  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 "absl/types/optional.h"

#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,

                   absl::optional<int> start_forget_weight);

  void Update(int relative_delay_ms, bool reordered, int base_delay_ms);

  absl::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_;

  absl::optional<int> optimal_delay_ms_;

};

}  // namespace webrtc

#endif  // MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_