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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <protocols/rtc/rtc_state.h>
namespace transport {
namespace protocol {
namespace rtc {
class RTCRateControl : public std::enable_shared_from_this<RTCRateControl> {
public:
RTCRateControl()
: rc_on_(false),
congestion_win_(1000000), // init the win to a large number
congestion_state_(CongestionState::Normal),
protocol_state_(nullptr) {}
virtual ~RTCRateControl() = default;
void turnOnRateControl() { rc_on_ = true; }
void setState(std::shared_ptr<RTCState> state) { protocol_state_ = state; };
uint32_t getCongestionWindow() { return congestion_win_; };
bool inCongestionState() {
if (congestion_state_ == CongestionState::Congested) return true;
return false;
}
virtual void onNewRound(double round_len) = 0;
virtual void onDataPacketReceived(const core::ContentObject &content_object,
bool compute_stats) = 0;
protected:
enum class CongestionState { Normal = 0, Underuse = 1, Congested = 2, Last };
protected:
bool rc_on_;
uint32_t congestion_win_;
CongestionState congestion_state_;
std::shared_ptr<RTCState> protocol_state_;
};
} // end namespace rtc
} // end namespace protocol
} // end namespace transport
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