QtsTimeStamper Class Reference

Time stamp management per PID. More...

Public Member Functions
	QtsTimeStamper (const QtsDemux *demux=0)
	Constructor. More...
QtsPid	getPid () const
	Get the reference PID. More...
quint64	lastTimeStamp ()
	Get the last timestamp in milliseconds, starting with zero. More...
void	processPesPacket (const QtsPesPacket &packet)
	Process one PES packet from the reference PID. More...
void	reset ()
	Reset the stamper, back to constructor state. More...
void	setDemux (const QtsDemux *demux=0)
	Set a new demux. More...

Private Types
enum	TimeSource {   PTS,   PCR,   UNDEFINED }
	Our source of time reference. More...

Private Member Functions
void	processClock (qint64 clock)
	Process a new clock value in millisecond. More...

Private Attributes
qint64	_delta
	Adjustment value between time clock and time stamps. More...
const QtsDemux *	_demux
	Demux providing the PCR. More...
quint64	_lastTimeStamp
	Last known timestamp. More...
QtsPid	_pid
	Reference PID for timestamps. More...
qint64	_previousClock
	Previous time clock value. More...
TimeSource	_source
	Where do we get the time reference from. More...

Detailed Description

Time stamp management per PID.

Return a current time reference in millisecond for a given PID. The first time reference found is zero. Use the PTS from the PID if some are found. Otherwise, use the global PCR from the TS.

Member Enumeration Documentation

TimeSource

enum QtsTimeStamper::TimeSource

private

Our source of time reference.

Enumerator
PTS
PCR
UNDEFINED

Constructor & Destructor Documentation

QtsTimeStamper()

QtsTimeStamper::QtsTimeStamper

(

const QtsDemux *

demux = 0

)

Constructor.

Parameters

[in]

demux

Optional demux which will be used to collect PCR. If zero, no PCR will be used, only PTS from the PES packets in the PID.

Member Function Documentation

setDemux()

void QtsTimeStamper::setDemux

(

const QtsDemux *

demux = 0

)

Set a new demux.

Parameters

[in]

demux

New demux. Ignored if the time source is already PTS on the PID.

lastTimeStamp()

quint64 QtsTimeStamper::lastTimeStamp

(

)

Get the last timestamp in milliseconds, starting with zero.

Returns

The last timestamp in milliseconds.

processPesPacket()

void QtsTimeStamper::processPesPacket

(

const QtsPesPacket &

packet

)

Process one PES packet from the reference PID.

Parameters

[in]

packet

The PES packet. The first packet defines the PID. All subsequent packets must belong to the same PID.

reset()

void QtsTimeStamper::reset

(

)

Reset the stamper, back to constructor state.

getPid()

QtsPid QtsTimeStamper::getPid ( ) const

inline

Get the reference PID.

Returns

The reference PID or QTS_PID_NULL if unknown.

processClock()

void QtsTimeStamper::processClock ( qint64  clock )

private

Process a new clock value in millisecond.

Parameters

[in]

clock

New clock value in millisecond.

Member Data Documentation

_demux

const QtsDemux* QtsTimeStamper::_demux

private

Demux providing the PCR.

_pid

QtsPid QtsTimeStamper::_pid

private

Reference PID for timestamps.

_source

TimeSource QtsTimeStamper::_source

private

Where do we get the time reference from.

_lastTimeStamp

quint64 QtsTimeStamper::_lastTimeStamp

private

Last known timestamp.

_previousClock

qint64 QtsTimeStamper::_previousClock

private

Previous time clock value.

_delta

qint64 QtsTimeStamper::_delta

private

Adjustment value between time clock and time stamps.

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The documentation for this class was generated from the following files:

• QtsTimeStamper.h
• QtsTimeStamper.cpp