OpalNullMediaStream Class Reference

#include <mediastrm.h>

Inheritance diagram for OpalNullMediaStream:

Public Member Functions
Construction
	OpalNullMediaStream (OpalConnection &conn, const OpalMediaFormat &mediaFormat, unsigned sessionID, bool isSource, bool isSynchronous=false)
	OpalNullMediaStream (OpalConnection &conn, const OpalMediaFormat &mediaFormat, unsigned sessionID, bool isSource, bool usePacingDelay, bool requiresPatchThread)
Overrides of OpalMediaStream class
virtual PBoolean	ReadData (BYTE *data, PINDEX size, PINDEX &length)
virtual PBoolean	WriteData (const BYTE *data, PINDEX length, PINDEX &written)
virtual PBoolean	RequiresPatchThread () const
virtual PBoolean	IsSynchronous () const
Protected Attributes
bool	m_isSynchronous
bool	m_requiresPatchThread

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Detailed Description

This class describes a media stream that is used for media bypass.

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Constructor & Destructor Documentation

OpalNullMediaStream::OpalNullMediaStream	(	OpalConnection &	conn,
		const OpalMediaFormat &	mediaFormat,
		unsigned	sessionID,
		bool	isSource,
		bool	isSynchronous = false
	)

Construct a new media stream for RTP sessions.

Parameters:

mediaFormat	Media format for stream
sessionID	Session number for stream
isSource	Is a source stream
isSynchronous	Can accept data and block accordingly

OpalNullMediaStream::OpalNullMediaStream	(	OpalConnection &	conn,
		const OpalMediaFormat &	mediaFormat,
		unsigned	sessionID,
		bool	isSource,
		bool	usePacingDelay,
		bool	requiresPatchThread
	)

Parameters:

mediaFormat	Media format for stream
sessionID	Session number for stream
isSource	Is a source stream
usePacingDelay	Use delay to pace stream I/O
requiresPatchThread	Requires a patch thread to execute

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Member Function Documentation

virtual PBoolean OpalNullMediaStream::IsSynchronous

(

)

const [virtual]

Indicate if the media stream is synchronous. Returns m_isSynchronous.

Implements OpalMediaStream.

virtual PBoolean OpalNullMediaStream::ReadData	(	BYTE *	data,
		PINDEX	size,
		PINDEX &	length
	)			[virtual]

Read raw media data from the source media stream. The default behaviour does nothing and returns false.

Parameters:

data	Data buffer to read to
size	Size of buffer
length	Length of data actually read

Reimplemented from OpalMediaStream.

virtual PBoolean OpalNullMediaStream::RequiresPatchThread

(

)

const [virtual]

Indicate if the media stream requires a OpalMediaPatch thread (active patch). The default behaviour returns the value of m_isSynchronous.

Reimplemented from OpalMediaStream.

virtual PBoolean OpalNullMediaStream::WriteData	(	const BYTE *	data,
		PINDEX	length,
		PINDEX &	written
	)			[virtual]

Write raw media data to the sink media stream. The default behaviour does nothing and returns false.

Parameters:

data	Data to write
length	Length of data to read.
written	Length of data actually written

Reimplemented from OpalMediaStream.

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Field Documentation

bool OpalNullMediaStream::m_isSynchronous [protected]

bool OpalNullMediaStream::m_requiresPatchThread [protected]

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

• mediastrm.h

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