PVXMLChannel Class Reference

#include <vxml.h>

Inheritance diagram for PVXMLChannel:


Public Member Functions
	PVXMLChannel (unsigned frameDelay, PINDEX frameSize)
	~PVXMLChannel ()
virtual BOOL	Open (PVXMLChannelInterface *_vxml)
virtual BOOL	IsOpen () const
virtual BOOL	Close ()
virtual BOOL	Read (void *buffer, PINDEX amount)
virtual BOOL	Write (const void *buf, PINDEX len)
virtual PWAVFile *	CreateWAVFile (const PFilePath &fn, BOOL recording=FALSE)
const PString &	GetMediaFormat () const
BOOL	IsMediaPCM () const
virtual PString	AdjustWavFilename (const PString &fn)
virtual BOOL	WriteFrame (const void *buf, PINDEX len)=0
virtual BOOL	IsSilenceFrame (const void *buf, PINDEX len) const =0
virtual BOOL	QueueRecordable (PVXMLRecordable *newItem)
BOOL	StartRecording (const PFilePath &fn, unsigned finalSilence=3000, unsigned maxDuration=30000)
BOOL	EndRecording ()
BOOL	IsRecording () const
virtual BOOL	ReadFrame (void *buffer, PINDEX amount)=0
virtual PINDEX	CreateSilenceFrame (void *buffer, PINDEX amount)=0
virtual void	GetBeepData (PBYTEArray &, unsigned)
virtual BOOL	QueueResource (const PURL &url, PINDEX repeat=1, PINDEX delay=0)
virtual BOOL	QueuePlayable (const PString &type, const PString &str, PINDEX repeat=1, PINDEX delay=0, BOOL autoDelete=FALSE)
virtual BOOL	QueuePlayable (PVXMLPlayable *newItem)
virtual BOOL	QueueData (const PBYTEArray &data, PINDEX repeat=1, PINDEX delay=0)
virtual BOOL	QueueFile (const PString &fn, PINDEX repeat=1, PINDEX delay=0, BOOL autoDelete=FALSE)
virtual BOOL	QueueCommand (const PString &cmd, PINDEX repeat=1, PINDEX delay=0)
virtual void	FlushQueue ()
virtual BOOL	IsPlaying () const
void	SetPause (BOOL _pause)
void	SetName (const PString &name)
unsigned	GetSampleFrequency () const
Protected Attributes
PVXMLChannelInterface *	vxmlInterface
unsigned	sampleFrequency
PString	mediaFormat
PString	wavFilePrefix
PMutex	channelWriteMutex
PMutex	channelReadMutex
BOOL	closed
BOOL	recording
PVXMLRecordable *	recordable
unsigned	finalSilence
unsigned	silenceRun
BOOL	playing
PMutex	queueMutex
PVXMLQueue	playQueue
PVXMLPlayable *	currentPlayItem
BOOL	paused
int	silentCount
int	totalData
PTimer	delayTimer
PString	channelName

Constructor & Destructor Documentation

PVXMLChannel::PVXMLChannel	(	unsigned	frameDelay,
		PINDEX	frameSize
	)

PVXMLChannel::~PVXMLChannel ( )

Member Function Documentation

virtual BOOL PVXMLChannel::Open ( PVXMLChannelInterface * _vxml ) [virtual]

virtual BOOL PVXMLChannel::IsOpen ( ) const [virtual]

Determine if the channel is currently open and read and write operations can be executed on it. For example, in the PFile# class it returns if the file is currently open.

Returns:: TRUE if the channel is open.

Reimplemented from PIndirectChannel.

virtual BOOL PVXMLChannel::Close ( ) [virtual]

Close the channel. This will detach itself from the read and write channels and delete both of them if they are auto delete.

Returns:: TRUE if the channel is closed.

Reimplemented from PIndirectChannel.

virtual BOOL PVXMLChannel::Read	(	void *	buffer,
		PINDEX	amount
	)			`[virtual]`

Low level read from the file channel. The read timeout is ignored for file I/O. The GetLastReadCount() function returns the actual number of bytes read.

The GetErrorCode() function should be consulted after Read() returns FALSE to determine what caused the failure.

Returns:: TRUE indicates that at least one character was read from the channel. FALSE means no bytes were read due to timeout or some other I/O error.

Reimplemented from PDelayChannel.

virtual BOOL PVXMLChannel::Write	(	const void *	buf,
		PINDEX	len
	)			`[virtual]`

Low level write to the file channel. The write timeout is ignored for file I/O. The GetLastWriteCount() function returns the actual number of bytes written.

The GetErrorCode() function should be consulted after Write() returns FALSE to determine what caused the failure.

Returns:: TRUE if at least len bytes were written to the channel.

Reimplemented from PDelayChannel.

virtual PWAVFile* PVXMLChannel::CreateWAVFile	(	const PFilePath &	fn,
		BOOL	recording = `FALSE`
	)			`[virtual]`

const PString& PVXMLChannel::GetMediaFormat ( ) const [inline]

BOOL PVXMLChannel::IsMediaPCM ( ) const [inline]

virtual PString PVXMLChannel::AdjustWavFilename ( const PString & fn ) [virtual]

virtual BOOL PVXMLChannel::WriteFrame	(	const void *	buf,
		PINDEX	len
	)			`[pure virtual]`

virtual BOOL PVXMLChannel::IsSilenceFrame	(	const void *	buf,
		PINDEX	len
	)			const `[pure virtual]`

virtual BOOL PVXMLChannel::QueueRecordable ( PVXMLRecordable * newItem ) [virtual]

BOOL PVXMLChannel::StartRecording	(	const PFilePath &	fn,
		unsigned	finalSilence = `3000`,
		unsigned	maxDuration = `30000`
	)

BOOL PVXMLChannel::EndRecording ( )

BOOL PVXMLChannel::IsRecording ( ) const [inline]

virtual BOOL PVXMLChannel::ReadFrame	(	void *	buffer,
		PINDEX	amount
	)			`[pure virtual]`

virtual PINDEX PVXMLChannel::CreateSilenceFrame	(	void *	buffer,
		PINDEX	amount
	)			`[pure virtual]`

virtual void PVXMLChannel::GetBeepData	(	PBYTEArray &	,
		unsigned
	)			`[inline, virtual]`

virtual BOOL PVXMLChannel::QueueResource	(	const PURL &	url,
		PINDEX	repeat = `1`,
		PINDEX	delay = `0`
	)			`[virtual]`

virtual BOOL PVXMLChannel::QueuePlayable	(	const PString &	type,
		const PString &	str,
		PINDEX	repeat = `1`,
		PINDEX	delay = `0`,
		BOOL	autoDelete = `FALSE`
	)			`[virtual]`