ns-3.24: src/contrib/delay-jitter-estimation.cc@07d34c0d8d18 (annotated)

2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	1
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	2	#include "delay-jitter-estimation.h"
3041 a624276a897b mtag -> tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3040 diff changeset	3	#include "ns3/tag.h"
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	4	#include "ns3/simulator.h"
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	5	#include "ns3/string.h"
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	6
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	7	namespace ns3 {
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	8
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	9	class DelayJitterEstimationTimestampTag : public Tag
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	10	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	11	public:
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	12	DelayJitterEstimationTimestampTag ();
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	13	static TypeId GetTypeId (void);
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	14	virtual TypeId GetInstanceTypeId (void) const;
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	15
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	16	virtual uint32_t GetSerializedSize (void) const;
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	17	virtual void Serialize (TagBuffer i) const;
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	18	virtual void Deserialize (TagBuffer i);
3208 1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	19	virtual void Print (std::ostream &os) const;
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	20
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	21	Time GetTxTime (void) const;
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	22	private:
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	23	uint64_t m_creationTime;
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	24	};
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	25
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	26	DelayJitterEstimationTimestampTag::DelayJitterEstimationTimestampTag ()
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	27	: m_creationTime (Simulator::Now ().GetTimeStep ())
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	28	{}
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	29
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	30	TypeId
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	31	DelayJitterEstimationTimestampTag::GetTypeId (void)
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	32	{
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	33	static TypeId tid = TypeId ("anon::DelayJitterEstimationTimestampTag")
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	34	.SetParent<Tag> ()
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	35	.AddConstructor<DelayJitterEstimationTimestampTag> ()
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	36	.AddAttribute ("CreationTime",
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	37	"The time at which the timestamp was created",
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	38	StringValue ("0.0s"),
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	39	MakeTimeAccessor (&DelayJitterEstimationTimestampTag::GetTxTime),
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	40	MakeTimeChecker ())
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	41	;
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	42	return tid;
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	43	}
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	44	TypeId
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	45	DelayJitterEstimationTimestampTag::GetInstanceTypeId (void) const
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	46	{
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	47	return GetTypeId ();
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	48	}
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	49
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	50	uint32_t
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	51	DelayJitterEstimationTimestampTag::GetSerializedSize (void) const
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	52	{
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	53	return 8;
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	54	}
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	55	void
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	56	DelayJitterEstimationTimestampTag::Serialize (TagBuffer i) const
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	57	{
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	58	i.WriteU64 (m_creationTime);
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	59	}
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	60	void
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	61	DelayJitterEstimationTimestampTag::Deserialize (TagBuffer i)
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	62	{
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	63	m_creationTime = i.ReadU64 ();
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	64	}
3208 1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	65	void
1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	66	DelayJitterEstimationTimestampTag::Print (std::ostream &os) const
1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	67	{
1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	68	os << "CreationTime=" << m_creationTime;
1a754d09c4ba bug 200: Packet::PrintTags is not implemented. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3084 diff changeset	69	}
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	70	Time
3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	71	DelayJitterEstimationTimestampTag::GetTxTime (void) const
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	72	{
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	73	return TimeStep (m_creationTime);
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	74	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	75
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	76	DelayJitterEstimation::DelayJitterEstimation ()
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	77	: m_previousRx (Simulator::Now ()),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	78	m_previousRxTx (Simulator::Now ()),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	79	m_jitter (Seconds (0.0)),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	80	m_delay (Seconds (0.0))
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	81	{}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	82	void
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	83	DelayJitterEstimation::PrepareTx (Ptr<const Packet> packet)
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	84	{
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	85	DelayJitterEstimationTimestampTag tag;
4502 07d34c0d8d18 new tags Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3208 diff changeset	86	packet->AddByteTag (tag);
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	87	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	88	void
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	89	DelayJitterEstimation::RecordRx (Ptr<const Packet> packet)
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	90	{
3084 3d83c2088c85 avoid warning with g++ 4.1.2 Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3041 diff changeset	91	DelayJitterEstimationTimestampTag tag;
2281 1e9dd91f666f fix optimized build Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2265 diff changeset	92	bool found;
4502 07d34c0d8d18 new tags Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3208 diff changeset	93	found = packet->FindFirstMatchingByteTag (tag);
2287 363c7065ce0e it is possible to receive packets which are not tagged. ignore them rather than crash. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2281 diff changeset	94	if (!found)
363c7065ce0e it is possible to receive packets which are not tagged. ignore them rather than crash. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2281 diff changeset	95	{
363c7065ce0e it is possible to receive packets which are not tagged. ignore them rather than crash. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2281 diff changeset	96	return;
363c7065ce0e it is possible to receive packets which are not tagged. ignore them rather than crash. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2281 diff changeset	97	}
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	98	tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	99
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	100	Time delta = (Simulator::Now () - m_previousRx) - (tag.GetTxTime () - m_previousRxTx);
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	101	m_jitter += (Abs (delta) - m_jitter ) / Scalar (16.0);
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	102	m_previousRx = Simulator::Now ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	103	m_previousRxTx = tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	104	m_delay = Simulator::Now () - tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	105	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	106
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	107	Time
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	108	DelayJitterEstimation::GetLastDelay (void) const
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	109	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	110	return m_delay;
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	111	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	112	Time
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	113	DelayJitterEstimation::GetLastJitter (void) const
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	114	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	115	return m_jitter;
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	116	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	117
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	118	} // namespace ns3

author	Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
	Wed, 03 Jun 2009 08:49:40 +0200
changeset 4502	07d34c0d8d18
parent 3208	1a754d09c4ba
child 7040	444bb5c76bff
permissions	-rw-r--r--