chromium/third_party/webrtc/modules/congestion_controller/goog_cc/bitrate_estimator.cc

/*
 *  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/bitrate_estimator.h"

#include <algorithm>
#include <cmath>
#include <cstdint>

#include "absl/types/optional.h"
#include "api/field_trials_view.h"
#include "api/units/data_rate.h"
#include "api/units/data_size.h"
#include "api/units/time_delta.h"
#include "api/units/timestamp.h"
#include "rtc_base/checks.h"
#include "rtc_base/experiments/field_trial_parser.h"

namespace webrtc {

namespace {
constexpr int kInitialRateWindowMs = …;
constexpr int kRateWindowMs = …;
constexpr int kMinRateWindowMs = …;
constexpr int kMaxRateWindowMs = …;

const char kBweThroughputWindowConfig[] = …;

}  // namespace

BitrateEstimator::BitrateEstimator(const FieldTrialsView* key_value_config)
    : … { … }

BitrateEstimator::~BitrateEstimator() = default;

void BitrateEstimator::Update(Timestamp at_time, DataSize amount, bool in_alr) { … }

float BitrateEstimator::UpdateWindow(int64_t now_ms,
                                     int bytes,
                                     int rate_window_ms,
                                     bool* is_small_sample) { … }

absl::optional<DataRate> BitrateEstimator::bitrate() const { … }

absl::optional<DataRate> BitrateEstimator::PeekRate() const { … }

void BitrateEstimator::ExpectFastRateChange() { … }

}  // namespace webrtc