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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.
*/
#include "modules/congestion_controller/goog_cc/acknowledged_bitrate_estimator.h"
#include <algorithm>
#include <memory>
#include <utility>
#include <vector>
#include "absl/types/optional.h"
#include "api/field_trials_view.h"
#include "api/transport/network_types.h"
#include "api/units/data_rate.h"
#include "api/units/data_size.h"
#include "api/units/timestamp.h"
#include "modules/congestion_controller/goog_cc/bitrate_estimator.h"
#include "rtc_base/checks.h"
namespace webrtc {
AcknowledgedBitrateEstimator::AcknowledgedBitrateEstimator(
const FieldTrialsView* key_value_config)
: AcknowledgedBitrateEstimator(
key_value_config,
std::make_unique<BitrateEstimator>(key_value_config)) {}
AcknowledgedBitrateEstimator::~AcknowledgedBitrateEstimator() {}
AcknowledgedBitrateEstimator::AcknowledgedBitrateEstimator(
const FieldTrialsView* key_value_config,
std::unique_ptr<BitrateEstimator> bitrate_estimator)
: in_alr_(false), bitrate_estimator_(std::move(bitrate_estimator)) {}
void AcknowledgedBitrateEstimator::IncomingPacketFeedbackVector(
const std::vector<PacketResult>& packet_feedback_vector) {
RTC_DCHECK(std::is_sorted(packet_feedback_vector.begin(),
packet_feedback_vector.end(),
PacketResult::ReceiveTimeOrder()));
for (const auto& packet : packet_feedback_vector) {
if (alr_ended_time_ && packet.sent_packet.send_time > *alr_ended_time_) {
bitrate_estimator_->ExpectFastRateChange();
alr_ended_time_.reset();
}
DataSize acknowledged_estimate = packet.sent_packet.size;
acknowledged_estimate += packet.sent_packet.prior_unacked_data;
bitrate_estimator_->Update(packet.receive_time, acknowledged_estimate,
in_alr_);
}
}
absl::optional<DataRate> AcknowledgedBitrateEstimator::bitrate() const {
return bitrate_estimator_->bitrate();
}
absl::optional<DataRate> AcknowledgedBitrateEstimator::PeekRate() const {
return bitrate_estimator_->PeekRate();
}
void AcknowledgedBitrateEstimator::SetAlrEndedTime(Timestamp alr_ended_time) {
alr_ended_time_.emplace(alr_ended_time);
}
void AcknowledgedBitrateEstimator::SetAlr(bool in_alr) {
in_alr_ = in_alr;
}
} // namespace webrtc
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