81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
|
//
|
||
|
|
// Created by Grishka on 25/02/2019.
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef LIBTGVOIP_SCREAMCONGESTIONCONTROLLER_H
|
||
|
|
#define LIBTGVOIP_SCREAMCONGESTIONCONTROLLER_H
|
||
|
|
|
||
|
|
#include "../Buffers.h"
|
||
|
|
#include <vector>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
namespace tgvoip{
|
||
|
|
namespace video{
|
||
|
|
class ScreamCongestionController{
|
||
|
|
public:
|
||
|
|
ScreamCongestionController();
|
||
|
|
void AdjustBitrate();
|
||
|
|
void ProcessAcks(float oneWayDelay, uint32_t bytesNewlyAcked, uint32_t lossCount, double rtt);
|
||
|
|
void ProcessPacketSent(uint32_t size);
|
||
|
|
void ProcessPacketLost(uint32_t size);
|
||
|
|
double GetPacingInterval();
|
||
|
|
void UpdateMediaRate(uint32_t frameSize);
|
||
|
|
uint32_t GetBitrate();
|
||
|
|
|
||
|
|
private:
|
||
|
|
void UpdateVariables(float qdelay);
|
||
|
|
void UpdateCWnd(float qdelay);
|
||
|
|
void AdjustQDelayTarget(float qdelay);
|
||
|
|
void CalculateSendWindow(float qdelay);
|
||
|
|
|
||
|
|
void UpdateBytesInFlightHistory();
|
||
|
|
|
||
|
|
struct ValueSample{
|
||
|
|
uint32_t sample;
|
||
|
|
double time;
|
||
|
|
};
|
||
|
|
|
||
|
|
float qdelayTarget;
|
||
|
|
float qdelayFractionAvg=0.0f;
|
||
|
|
HistoricBuffer<float, 20> qdelayFractionHist;
|
||
|
|
float qdelayTrend=0.0f;
|
||
|
|
float qdelayTrendMem=0.0f;
|
||
|
|
HistoricBuffer<float, 100> qdelayNormHist;
|
||
|
|
bool inFastIncrease=true;
|
||
|
|
uint32_t cwnd;
|
||
|
|
uint32_t bytesNewlyAcked=0;
|
||
|
|
uint32_t maxBytesInFlight=0;
|
||
|
|
uint32_t sendWnd=0;
|
||
|
|
uint32_t targetBitrate=0;
|
||
|
|
uint32_t targetBitrateLastMax=1;
|
||
|
|
float rateTransmit=0.0f;
|
||
|
|
float rateAck=0.0f;
|
||
|
|
float rateMedia=0.0f;
|
||
|
|
float rateMediaMedian=0.0f;
|
||
|
|
float sRTT=0.0f;
|
||
|
|
uint32_t rtpQueueSize=0;
|
||
|
|
uint32_t rtpSize=1024; //0;
|
||
|
|
float lossEventRate=0.0f;
|
||
|
|
|
||
|
|
bool lossPending=false;
|
||
|
|
float prevOneWayDelay=0.0f;
|
||
|
|
double ignoreLossesUntil=0.0;
|
||
|
|
uint32_t prevLossCount=0;
|
||
|
|
double lastTimeQDelayTrendWasGreaterThanLo=0.0;
|
||
|
|
double lastVariablesUpdateTime=0.0;
|
||
|
|
double lastRateAdjustmentTime=0.0;
|
||
|
|
double lastCWndUpdateTime=0.0;
|
||
|
|
uint32_t bytesInFlight=0;
|
||
|
|
std::vector<ValueSample> bytesInFlightHistory;
|
||
|
|
uint32_t bytesSent=0;
|
||
|
|
uint32_t bytesAcked=0;
|
||
|
|
uint32_t bytesMedia=0;
|
||
|
|
double rateTransmitUpdateTime=0.0;
|
||
|
|
double rateMediaUpdateTime=0.0;
|
||
|
|
HistoricBuffer<float, 25> rateMediaHistory;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif //LIBTGVOIP_SCREAMCONGESTIONCONTROLLER_H
|