reorder_optimizer.h (1381B)
1 /* 2 * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_ 12 #define MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_ 13 14 #include <optional> 15 16 #include "modules/audio_coding/neteq/histogram.h" 17 18 namespace webrtc { 19 20 // Calculates an optimal delay to reduce the chance of missing reordered 21 // packets. The delay/loss trade-off can be tune using the `ms_per_loss_percent` 22 // parameter. 23 class ReorderOptimizer { 24 public: 25 ReorderOptimizer(int forget_factor, 26 int ms_per_loss_percent, 27 std::optional<int> start_forget_weight); 28 29 void Update(int relative_delay_ms, bool reordered, int base_delay_ms); 30 31 std::optional<int> GetOptimalDelayMs() const { return optimal_delay_ms_; } 32 33 void Reset(); 34 35 private: 36 int MinimizeCostFunction(int base_delay_ms) const; 37 38 Histogram histogram_; 39 const int ms_per_loss_percent_; 40 std::optional<int> optimal_delay_ms_; 41 }; 42 43 } // namespace webrtc 44 #endif // MODULES_AUDIO_CODING_NETEQ_REORDER_OPTIMIZER_H_