QtsDescriptor Class Reference

Representation of a binary MPEG PSI/SI descriptor. More...

Public Member Functions
	QtsDescriptor ()
	Default constructor. More...
	QtsDescriptor (const QtsDescriptor &other)
	Copy constructor. More...
	QtsDescriptor (const void *addr, int size)
	Constructor from full binary content. More...
	QtsDescriptor (const QtlByteBlock &content)
	Constructor from full binary content. More...
const quint8 *	content () const
	Get the address of the full binary content of the descriptor. More...
void	invalidate ()
	Invalidate the descriptor content. More...
bool	isValid () const
	Check if a descriptor has valid content. More...
bool	operator!= (const QtsDescriptor &other) const
	Difference operator. More...
const QtsDescriptor &	operator= (const QtsDescriptor &other)
	Assignment operator. More...
bool	operator== (const QtsDescriptor &other) const
	Comparison operator. More...
const quint8 *	payload () const
	Get the address of the descriptor payload. More...
quint8 *	payload ()
	Get the address of the descriptor payload for payload update. More...
int	payloadSize () const
	Get the size of the descriptor payload. More...
void	replacePayload (const void *addr, int size)
	Replace the payload of the descriptor. More...
void	replacePayload (const QtlByteBlock &payload)
	Replace the payload of the descriptor. More...
void	resizePayload (int size)
	Resize (truncate or extend) the payload of the descriptor. More...
int	size () const
	Get the size of the full binary content of the descriptor. More...
QtsDescTag	tag () const
	Get the descriptor tag. More...

Private Attributes
QtlByteBlock	_data
	Full binary content of the descriptor. More...

Detailed Description

Representation of a binary MPEG PSI/SI descriptor.

Data from descriptors are not deeply copied thanks to the implicit sharing mechanism of the Qt containers. Whenever a descriptor is modified, then a copy-on-write occurs.

Constructor & Destructor Documentation

QtsDescriptor() [1/4]

QtsDescriptor::QtsDescriptor ( )

inline

Default constructor.

QtsDescriptor() [2/4]

QtsDescriptor::QtsDescriptor ( const QtsDescriptor &  other )

inline

Copy constructor.

Parameters

[in]

other

Other instance to copy.

QtsDescriptor() [3/4]

QtsDescriptor::QtsDescriptor	(	const void *	addr,
		int	size
	)

Constructor from full binary content.

The content is copied into the descriptor if valid.

Parameters

[in]	addr	Content address.
[in]	size	Content size.

QtsDescriptor() [4/4]

QtsDescriptor::QtsDescriptor

(

const QtlByteBlock &

content

)

Constructor from full binary content.

The content is copied into the descriptor if valid.

Parameters

[in]

content

Binary content.

Member Function Documentation

operator=()

const QtsDescriptor & QtsDescriptor::operator=

(

const QtsDescriptor &

other

)

Assignment operator.

Parameters

[in]

other

Other instance to copy.

isValid()

bool QtsDescriptor::isValid

(

)

const

Check if a descriptor has valid content.

Returns

True if a descriptor has valid content.

invalidate()

void QtsDescriptor::invalidate ( )

inline

Invalidate the descriptor content.

tag()

QtsDescTag QtsDescriptor::tag ( ) const

inline

Get the descriptor tag.

Returns

The descriptor tag or zero (reserved value) if invalid.

content()

const quint8* QtsDescriptor::content ( ) const

inline

Get the address of the full binary content of the descriptor.

Returns

The address of the full binary content of the descriptor or zero if the descriptor is invalid. Do not modify the content. May be invalidated after modification in the descriptor.

size()

int QtsDescriptor::size ( ) const

inline

Get the size of the full binary content of the descriptor.

Returns

The size of the full binary content of the descriptor.

payload() [1/2]

const quint8* QtsDescriptor::payload ( ) const

inline

Get the address of the descriptor payload.

Returns

The address of the descriptor payload or zero if the descriptor is invalid. Do not modify the content. May be invalidated after modification in the descriptor.

payload() [2/2]

quint8* QtsDescriptor::payload ( )

inline

Get the address of the descriptor payload for payload update.

Returns

The address of the descriptor payload or zero if the descriptor is invalid. May be invalidated after modification in the descriptor.

payloadSize()

int QtsDescriptor::payloadSize ( ) const

inline

Get the size of the descriptor payload.

Returns

The size of the descriptor payload.

replacePayload() [1/2]

void QtsDescriptor::replacePayload	(	const void *	addr,
		int	size
	)

Replace the payload of the descriptor.

The tag is unchanged, the size is adjusted.

Parameters

[in]	addr	New payload content address.
[in]	size	New payload content size.

replacePayload() [2/2]

void QtsDescriptor::replacePayload ( const QtlByteBlock &  payload )

inline

Replace the payload of the descriptor.

The tag is unchanged, the size is adjusted.

Parameters

[in]

payload

New payload content.

resizePayload()

void QtsDescriptor::resizePayload

(

int

size

)

Resize (truncate or extend) the payload of the descriptor.

The tag is unchanged, the size is adjusted. If the payload is extended, new bytes are zeroes.

Parameters

[in]

size

New payload size.

operator==()

bool QtsDescriptor::operator== ( const QtsDescriptor &  other ) const

inline

Comparison operator.

Parameters

[in]

other

Other instance to compare.

Returns

True if the descriptos are identical, false otherwise.

operator!=()

bool QtsDescriptor::operator!= ( const QtsDescriptor &  other ) const

inline

Difference operator.

Parameters

[in]

other

Other instance to compare.

Returns

True if the descriptos are different, false otherwise.

Member Data Documentation

_data

QtlByteBlock QtsDescriptor::_data

private

Full binary content of the descriptor.

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

• QtsDescriptor.h
• QtsDescriptor.cpp