ns-3.24: src/contrib/delay-jitter-estimation.cc@e11e106c7c19 (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"
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	3	#include "ns3/mtag.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
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	7	namespace {
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	8
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	9	class TimestampTag : public ns3::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:
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	12	TimestampTag ();
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	13	static ns3::TypeId GetTypeId (void);
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	14	virtual ns3::TypeId GetInstanceTypeId (void) const;
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;
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	17	virtual void Serialize (ns3::TagBuffer i) const;
e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	18	virtual void Deserialize (ns3::TagBuffer i);
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	19
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	20
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	21	ns3::Time GetTxTime (void) const;
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
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	26	TimestampTag::TimestampTag ()
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	27	: m_creationTime (ns3::Simulator::Now ().GetTimeStep ())
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
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	30	ns3::TypeId
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	31	TimestampTag::GetTypeId (void)
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	32	{
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	33	static ns3::TypeId tid = ns3::TypeId ("anon::TimestampTag")
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	34	.SetParent<Tag> ()
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	35	.AddConstructor<TimestampTag> ()
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",
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	38	ns3::StringValue ("0.0s"),
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	39	ns3::MakeTimeAccessor (&TimestampTag::GetTxTime),
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	40	ns3::MakeTimeChecker ())
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	}
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	44	ns3::TypeId
5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	45	TimestampTag::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
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	51	TimestampTag::GetSerializedSize (void) const
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
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	56	TimestampTag::Serialize (ns3::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
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	61	TimestampTag::Deserialize (ns3::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	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	65	ns3::Time
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	66	TimestampTag::GetTxTime (void) const
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	67	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	68	return ns3::TimeStep (m_creationTime);
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	69	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	70
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	71	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	72
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	73	namespace ns3 {
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	DelayJitterEstimation::DelayJitterEstimation ()
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	76	: m_previousRx (Simulator::Now ()),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	77	m_previousRxTx (Simulator::Now ()),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	78	m_jitter (Seconds (0.0)),
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	79	m_delay (Seconds (0.0))
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	80	{}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	81	void
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	82	DelayJitterEstimation::PrepareTx (Ptr<const Packet> packet)
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	83	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	84	TimestampTag tag;
3040 e11e106c7c19 Mtag -> Tag Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 3038 diff changeset	85	packet->AddTag (tag);
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	86	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	87	void
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	88	DelayJitterEstimation::RecordRx (Ptr<const Packet> packet)
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	89	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	90	TimestampTag tag;
2281 1e9dd91f666f fix optimized build Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2265 diff changeset	91	bool found;
3038 5962e2962fa9 convert to new tag API. Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: 2287 diff changeset	92	found = packet->FindFirstMatchingTag (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	93	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	94	{
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	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	96	}
2265 190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	97	tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	98
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	99	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	100	m_jitter += (Abs (delta) - m_jitter ) / Scalar (16.0);
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	101	m_previousRx = Simulator::Now ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	102	m_previousRxTx = tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	103	m_delay = Simulator::Now () - tag.GetTxTime ();
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	104	}
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	Time
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	107	DelayJitterEstimation::GetLastDelay (void) const
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	108	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	109	return m_delay;
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	110	}
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	111	Time
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	112	DelayJitterEstimation::GetLastJitter (void) const
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	113	{
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	114	return m_jitter;
190a2d913472 estimation delay and jitter Mathieu Lacage <mathieu.lacage@sophia.inria.fr> parents: diff changeset	115	}
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	} // namespace ns3

author	Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
	Thu, 24 Apr 2008 16:03:13 -0700
changeset 3040	e11e106c7c19
parent 3038	5962e2962fa9
child 3041	a624276a897b
permissions	-rw-r--r--