rtc_event_bwe_update_scream.h

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/*

 *  Copyright (c) 2025 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 LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_BWE_UPDATE_SCREAM_H_

#define LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_BWE_UPDATE_SCREAM_H_

#include <stdint.h>

#include <memory>

#include <string>

#include <vector>

#include "absl/strings/string_view.h"

#include "api/array_view.h"

#include "api/rtc_event_log/rtc_event.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 "logging/rtc_event_log/events/rtc_event_log_parse_status.h"

namespace webrtc {

struct LoggedBweScreamUpdate {

  LoggedBweScreamUpdate() = default;

  LoggedBweScreamUpdate(Timestamp timestamp,

                        uint32_t ref_window_bytes,

                        uint32_t data_in_flight_bytes,

                        uint32_t target_rate_kbps,

                        uint32_t smoothed_rtt_ms,

                        uint32_t avg_queue_delay_ms,

                        uint32_t l4s_marked_permille)

      : timestamp(timestamp),

        ref_window(DataSize::Bytes(ref_window_bytes)),

        data_in_flight(DataSize::Bytes(data_in_flight_bytes)),

        target_rate(DataRate::KilobitsPerSec(target_rate_kbps)),

        smoothed_rtt(TimeDelta::Millis(smoothed_rtt_ms)),

        avg_queue_delay(TimeDelta::Millis(avg_queue_delay_ms)),

        l4s_marked_permille(l4s_marked_permille) {}

  int64_t log_time_us() const { return timestamp.us(); }

  int64_t log_time_ms() const { return timestamp.ms(); }

  Timestamp log_time() const { return timestamp; }

  Timestamp timestamp = Timestamp::MinusInfinity();

  DataSize ref_window;

  DataSize data_in_flight;

  DataRate target_rate;

  TimeDelta smoothed_rtt;

  TimeDelta avg_queue_delay;

  uint32_t l4s_marked_permille;

};

class RtcEventBweUpdateScream final : public RtcEvent {

 public:

  static constexpr Type kType = Type::BweUpdateScream;

  RtcEventBweUpdateScream(DataSize ref_window,

                          DataSize data_in_flight,

                          DataRate target_rate,

                          TimeDelta smoothed_rtt,

                          TimeDelta avg_queue_delay,

                          uint32_t l4s_marked_permille);

  ~RtcEventBweUpdateScream() override;

  Type GetType() const override { return kType; }

  bool IsConfigEvent() const override { return false; }

  std::unique_ptr<RtcEventBweUpdateScream> Copy() const;

  uint32_t ref_window_bytes() const { return ref_window_bytes_; }

  uint32_t data_in_flight_bytes() const { return data_in_flight_bytes_; }

  uint32_t target_rate_kbps() const { return target_rate_kbps_; }

  uint32_t smoothed_rtt_ms() const { return smoothed_rtt_ms_; }

  uint32_t avg_queue_delay_ms() const { return avg_queue_delay_ms_; }

  uint32_t l4s_marked_permille() const { return l4s_marked_permille_; }

  static std::string Encode(ArrayView<const RtcEvent*> batch) {

    // TODO(terelius): Implement

    return "";

  static RtcEventLogParseStatus Parse(

      absl::string_view encoded_bytes,

      bool batched,

      std::vector<LoggedBweScreamUpdate>& output) {

    // TODO(terelius): Implement

    return RtcEventLogParseStatus::Error("Not Implemented", __FILE__, __LINE__);

 private:

  RtcEventBweUpdateScream(const RtcEventBweUpdateScream&) = default;

  const uint32_t ref_window_bytes_;

  const uint32_t data_in_flight_bytes_;

  const uint32_t target_rate_kbps_;

  const uint32_t smoothed_rtt_ms_;

  const uint32_t avg_queue_delay_ms_;

  const uint32_t l4s_marked_permille_;

};

}  // namespace webrtc

#endif  // LOGGING_RTC_EVENT_LOG_EVENTS_RTC_EVENT_BWE_UPDATE_SCREAM_H_