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/*
* Copyright (c) 2015 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_CONGESTION_CONTROLLER_SEND_TIME_HISTORY_H_
#define MODULES_CONGESTION_CONTROLLER_SEND_TIME_HISTORY_H_
#include <map>
#include "modules/include/module_common_types.h"
#include "rtc_base/basictypes.h"
#include "rtc_base/constructormagic.h"
namespace webrtc {
class Clock;
struct PacketFeedback;
class SendTimeHistory {
public:
SendTimeHistory(const Clock* clock, int64_t packet_age_limit_ms);
~SendTimeHistory();
// Cleanup old entries, then add new packet info with provided parameters.
void AddAndRemoveOld(const PacketFeedback& packet);
// Updates packet info identified by |sequence_number| with |send_time_ms|.
// Return false if not found.
bool OnSentPacket(uint16_t sequence_number, int64_t send_time_ms);
// Look up PacketFeedback for a sent packet, based on the sequence number, and
// populate all fields except for arrival_time. The packet parameter must
// thus be non-null and have the sequence_number field set.
bool GetFeedback(PacketFeedback* packet_feedback, bool remove);
size_t GetOutstandingBytes(uint16_t local_net_id,
uint16_t remote_net_id) const;
private:
const Clock* const clock_;
const int64_t packet_age_limit_ms_;
SequenceNumberUnwrapper seq_num_unwrapper_;
std::map<int64_t, PacketFeedback> history_;
rtc::Optional<int64_t> latest_acked_seq_num_;
RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(SendTimeHistory);
};
} // namespace webrtc
#endif // MODULES_CONGESTION_CONTROLLER_SEND_TIME_HISTORY_H_