| /* |
| * Copyright (c) 2016 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_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_PLR_BASED_H_ |
| #define MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_PLR_BASED_H_ |
| |
| #include <memory> |
| |
| #include "absl/types/optional.h" |
| #include "common_audio/smoothing_filter.h" |
| #include "modules/audio_coding/audio_network_adaptor/controller.h" |
| #include "modules/audio_coding/audio_network_adaptor/include/audio_network_adaptor_config.h" |
| #include "modules/audio_coding/audio_network_adaptor/util/threshold_curve.h" |
| |
| namespace webrtc { |
| |
| class FecControllerPlrBased final : public Controller { |
| public: |
| struct Config { |
| // `fec_enabling_threshold` defines a curve, above which FEC should be |
| // enabled. `fec_disabling_threshold` defines a curve, under which FEC |
| // should be disabled. See below |
| // |
| // packet-loss ^ | | |
| // | | | FEC |
| // | \ \ ON |
| // | FEC \ \_______ fec_enabling_threshold |
| // | OFF \_________ fec_disabling_threshold |
| // |-----------------> bandwidth |
| Config(bool initial_fec_enabled, |
| const ThresholdCurve& fec_enabling_threshold, |
| const ThresholdCurve& fec_disabling_threshold, |
| int time_constant_ms); |
| bool initial_fec_enabled; |
| ThresholdCurve fec_enabling_threshold; |
| ThresholdCurve fec_disabling_threshold; |
| int time_constant_ms; |
| }; |
| |
| // Dependency injection for testing. |
| FecControllerPlrBased(const Config& config, |
| std::unique_ptr<SmoothingFilter> smoothing_filter); |
| |
| explicit FecControllerPlrBased(const Config& config); |
| |
| ~FecControllerPlrBased() override; |
| |
| FecControllerPlrBased(const FecControllerPlrBased&) = delete; |
| FecControllerPlrBased& operator=(const FecControllerPlrBased&) = delete; |
| |
| void UpdateNetworkMetrics(const NetworkMetrics& network_metrics) override; |
| |
| void MakeDecision(AudioEncoderRuntimeConfig* config) override; |
| |
| private: |
| bool FecEnablingDecision(const absl::optional<float>& packet_loss) const; |
| bool FecDisablingDecision(const absl::optional<float>& packet_loss) const; |
| |
| const Config config_; |
| bool fec_enabled_; |
| absl::optional<int> uplink_bandwidth_bps_; |
| const std::unique_ptr<SmoothingFilter> packet_loss_smoother_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_PLR_BASED_H_ |