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/*
* Copyright (c) 2017 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 WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_RPLR_BASED_H_
#define WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_RPLR_BASED_H_
#include <memory>
#include "webrtc/modules/audio_coding/audio_network_adaptor/controller.h"
#include "webrtc/modules/audio_coding/audio_network_adaptor/util/threshold_curve.h"
#include "webrtc/rtc_base/constructormagic.h"
namespace webrtc {
class FecControllerRplrBased 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
//
// recoverable
// 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);
bool initial_fec_enabled;
ThresholdCurve fec_enabling_threshold;
ThresholdCurve fec_disabling_threshold;
};
explicit FecControllerRplrBased(const Config& config);
~FecControllerRplrBased() override;
void UpdateNetworkMetrics(const NetworkMetrics& network_metrics) override;
void MakeDecision(AudioEncoderRuntimeConfig* config) override;
private:
bool FecEnablingDecision() const;
bool FecDisablingDecision() const;
const Config config_;
bool fec_enabled_;
rtc::Optional<int> uplink_bandwidth_bps_;
rtc::Optional<float> uplink_recoverable_packet_loss_;
RTC_DISALLOW_COPY_AND_ASSIGN(FecControllerRplrBased);
};
} // namespace webrtc
#endif // WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_RPLR_BASED_H_