Repo created

TMessagesProj/jni/voip/libtgvoip/CongestionControl.h

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+//
+// libtgvoip is free and unencumbered public domain software.
+// For more information, see http://unlicense.org or the UNLICENSE file
+// you should have received with this source code distribution.
+//
+
+#ifndef LIBTGVOIP_CONGESTIONCONTROL_H
+#define LIBTGVOIP_CONGESTIONCONTROL_H
+
+#include <stdlib.h>
+#include <stdint.h>
+#include "threading.h"
+#include "Buffers.h"
+
+#define TGVOIP_CONCTL_ACT_INCREASE 1
+#define TGVOIP_CONCTL_ACT_DECREASE 2
+#define TGVOIP_CONCTL_ACT_NONE 0
+
+namespace tgvoip{
+
+struct tgvoip_congestionctl_packet_t{
+	uint32_t seq;
+	double sendTime;
+	size_t size;
+};
+typedef struct tgvoip_congestionctl_packet_t tgvoip_congestionctl_packet_t;
+
+class CongestionControl{
+public:
+	CongestionControl();
+	~CongestionControl();
+
+	void PacketSent(uint32_t seq, size_t size);
+	void PacketAcknowledged(uint32_t seq);
+
+	double GetAverageRTT();
+	double GetMinimumRTT();
+	size_t GetInflightDataSize();
+	size_t GetCongestionWindow();
+	size_t GetAcknowledgedDataSize();
+	void Tick();
+	int GetBandwidthControlAction();
+	uint32_t GetSendLossCount();
+
+private:
+	HistoricBuffer<double, 100> rttHistory;
+	HistoricBuffer<size_t, 30> inflightHistory;
+	tgvoip_congestionctl_packet_t inflightPackets[100];
+	uint32_t lossCount;
+	double tmpRtt;
+	double lastActionTime;
+	double lastActionRtt;
+	double stateTransitionTime;
+	int tmpRttCount;
+	uint32_t lastSentSeq;
+	uint32_t tickCount;
+	size_t inflightDataSize;
+	size_t cwnd;
+	Mutex mutex;
+};
+}
+
+#endif //LIBTGVOIP_CONGESTIONCONTROL_H