#include <opalpluginmgr.h>

Inheritance diagram for OpalPluginStreamedAudioTranscoder:

Collaboration diagram for OpalPluginStreamedAudioTranscoder:

Public Member Functions
	OpalPluginStreamedAudioTranscoder (const OpalTranscoderKey &key, const PluginCodec_Definition *codec, bool isEncoder)

bool	UpdateMediaFormats (const OpalMediaFormat &input, const OpalMediaFormat &output)

PBoolean	ExecuteCommand (const OpalMediaCommand &command)

virtual bool	AcceptComfortNoise () const

virtual int	ConvertOne (int from) const

Public Member Functions inherited from OpalStreamedTranscoder
	OpalStreamedTranscoder (const OpalMediaFormat &inputMediaFormat, const OpalMediaFormat &outputMediaFormat, unsigned inputBits, unsigned outputBits)

virtual PINDEX	GetOptimalDataFrameSize (PBoolean input) const

virtual PBoolean	Convert (const RTP_DataFrame &input, RTP_DataFrame &output)

Public Member Functions inherited from OpalTranscoder
	OpalTranscoder (const OpalMediaFormat &inputMediaFormat, const OpalMediaFormat &outputMediaFormat)

virtual PBoolean	ConvertFrames (const RTP_DataFrame &input, RTP_DataFrameList &output)

PINDEX	GetMaxOutputSize () const

void	SetMaxOutputSize (PINDEX size)

void	SetCommandNotifier (const PNotifier &notifier)

const PNotifier &	GetCommandNotifier () const

void	NotifyCommand (const OpalMediaCommand &command) const
	Notify command notifier of command. More...

unsigned	GetSessionID () const
	Get session ID for the transcoder (from OpalMediaStream) More...

void	SetSessionID (unsigned id)
	Set session ID for the transcoder (from OpalMediaStream) More...

RTP_DataFrame::PayloadTypes	GetPayloadType (PBoolean input) const

virtual bool	AcceptEmptyPayload () const

virtual bool	AcceptOtherPayloads () const

virtual void	GetStatistics (OpalMediaStatistics &statistics) const

void	CopyTimestamp (RTP_DataFrame &dst, const RTP_DataFrame &src, bool inToOut) const

Public Member Functions inherited from OpalMediaFormatPair
	OpalMediaFormatPair (const OpalMediaFormat &inputMediaFormat, const OpalMediaFormat &outputMediaFormat)

void	PrintOn (ostream &strm) const

virtual Comparison	Compare (const PObject &obj) const

const OpalMediaFormat &	GetInputFormat () const

const OpalMediaFormat &	GetOutputFormat () const

Public Member Functions inherited from OpalPluginTranscoder
	OpalPluginTranscoder (const PluginCodec_Definition *defn, bool isEnc)

	~OpalPluginTranscoder ()

bool	UpdateOptions (OpalMediaFormat &fmt)

bool	ExecuteCommand (const OpalMediaCommand &command)

bool	Transcode (const void from, unsigned fromLen, void to, unsigned toLen, unsigned *flags) const

Protected Member Functions
virtual bool	OnCreated (const OpalMediaFormat &srcFormat, const OpalMediaFormat &destFormat, const BYTE *instance, unsigned instanceLen)

Protected Member Functions inherited from OpalTranscoder
	PDECLARE_MUTEX (updateMutex)

Protected Member Functions inherited from OpalPluginTranscoder
bool	CreateContext ()

bool	SetCodecOption (const PString &optionName, const PString &optionValue)

Protected Attributes
bool	comfortNoise

Protected Attributes inherited from OpalStreamedTranscoder
unsigned	inputBitsPerSample

unsigned	outputBitsPerSample

Protected Attributes inherited from OpalTranscoder
PINDEX	maxOutputSize

PNotifier	commandNotifier

unsigned	m_sessionID

bool	outputIsRTP

bool	inputIsRTP

bool	acceptEmptyPayload

bool	acceptOtherPayloads

unsigned	m_inClockRate

unsigned	m_outClockRate

RTP_DataFrame::PayloadTypes	m_lastPayloadType

unsigned	m_consecutivePayloadTypeMismatches

Protected Attributes inherited from OpalMediaFormatPair
OpalMediaFormat	inputMediaFormat

OpalMediaFormat	outputMediaFormat

Protected Attributes inherited from OpalPluginTranscoder
const PluginCodec_Definition *	codecDef

bool	isEncoder

void *	context

unsigned	m_maxPayloadSize

OpalPluginControl	setCodecOptionsControl

OpalPluginControl	getActiveOptionsControl

OpalPluginControl	freeOptionsControl

OpalPluginControl	getOutputDataSizeControl

OpalPluginControl	getCodecStatistics

Constructor & Destructor Documentation

OpalPluginStreamedAudioTranscoder::OpalPluginStreamedAudioTranscoder	(	const OpalTranscoderKey &	key,
		const PluginCodec_Definition *	codec,
		bool	isEncoder
	)

Member Function Documentation

virtual bool OpalPluginStreamedAudioTranscoder::AcceptComfortNoise ( ) const

inlinevirtual

Reimplemented from OpalTranscoder.

References comfortNoise.

virtual int OpalPluginStreamedAudioTranscoder::ConvertOne ( int sample ) const

virtual

Convert one sample from one format to another. This function takes the input data as a single sample value and converts it to its output format.

Returns converted value.

Implements OpalStreamedTranscoder.

PBoolean OpalPluginStreamedAudioTranscoder::ExecuteCommand ( const OpalMediaCommand & command )

virtual

Execute the command specified to the transcoder. The commands are highly context sensitive, for example OpalVideoUpdatePicture would only apply to a video transcoder.

The default behaviour simply returns false.

Returns: true if command is handled.

Reimplemented from OpalTranscoder.

virtual bool OpalPluginStreamedAudioTranscoder::OnCreated	(	const OpalMediaFormat &	srcFormat,
		const OpalMediaFormat &	destFormat,
		const BYTE *	instance,
		unsigned	instanceLen
	)

protectedvirtual

Initialise the just created transcoder

Reimplemented from OpalTranscoder.

bool OpalPluginStreamedAudioTranscoder::UpdateMediaFormats	(	const OpalMediaFormat &	inputMediaFormat,
		const OpalMediaFormat &	outputMediaFormat
	)

virtual

Update the input and output media formats. This can be used to adjust the parameters of a codec at run time. Note you cannot change the basic media format, eg change GSM0610 to G.711, only options for that format, eg 6k3 mode to 5k3 mode in G.723.1. If the formats are different then a OpalMediaFormat::Merge() is performed.

If a format is empty (invalid) it is ignored and does not update the internal variable. In this way only the input or output side can be updated.

The default behaviour updates the inputMediaFormat and outputMediaFormat member variables.

Reimplemented from OpalTranscoder.

Field Documentation

bool OpalPluginStreamedAudioTranscoder::comfortNoise

protected

Referenced by AcceptComfortNoise().

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

opalpluginmgr.h

Public Member Functions

Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation