List of HEVC short-term reference picture sets. More...

#include <tsHEVCShortTermReferencePictureSetList.h>

Inheritance diagram for ts::HEVCShortTermReferencePictureSetList:

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Collaboration diagram for ts::HEVCShortTermReferencePictureSetList:

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Classes
class	ShortTermReferencePictureSet
	HEVC short-term reference picture set. More...

Public Types
using	SuperClass = AbstractVideoStructure
	Reference to the superclass.

Public Member Functions
	HEVCShortTermReferencePictureSetList (const uint8_t *data=nullptr, size_t size=0, uint32_t num_short_term_ref_pic_sets=0)
	Constructor from a binary area.

virtual void	clear () override
	Clear all values.

virtual std::ostream &	display (std::ostream &=std::cout, const UString &margin=UString(), int level=Severity::Info) const override
	Display the content of this object to a stream.

uint32_t	num_short_term_ref_pic_sets () const
	Get the num_short_term_ref_pic_sets parameter of the list of st_ref_pic_set structures.

virtual bool	parse (AVCParser &, std::initializer_list< uint32_t >=std::initializer_list< uint32_t >()) override
	Parse the structure.

virtual bool	parse (const uint8_t *, size_t, std::initializer_list< uint32_t >=std::initializer_list< uint32_t >()) override
	Parse a memory area containing binary video data of the expected type.

bool	reset (uint32_t num_short_term_ref_pic_sets)
	Reset this object, makes it valid, resize the vector with empty st_ref_pic_set structures.

Public Attributes
std::vector< ShortTermReferencePictureSet >	list {}
	The list of ShortTermReferencePictureSet is organized as a vector.

bool	valid = false
	Valid flag.

Protected Member Functions
template<typename INT > requires std::integral<INT>
void	disp (std::ostream &out, const UString &margin, const UChar *name, INT n) const
	Display helper for subclasses.

template<typename INT > requires std::integral<INT>
void	disp (std::ostream &out, const UString &margin, const UChar *name, std::vector< INT > n) const
	Display helper for subclasses.

Detailed Description

List of HEVC short-term reference picture sets.

See also: ITU-T Rec. H.265, 7.3.7 and 7.4.8.

The HEVC structure st_ref_pic_set(stRpsIdx) is defined in 7.3.7 for index stRpsIdx. This index ranges from 0 to num_short_term_ref_pic_sets. The structure at index i may reference similar structures at lower indexes. So, a st_ref_pic_set cannot be used alone, it needs a reference to the previous instances.

The structure st_ref_pic_set(stRpsIdx) is used in two structures:

In sequence parameter set (7.3.2.2), an array of index 0 to num_short_term_ref_pic_sets - 1.
in slice segment header (7.3.6), last element, index num_short_term_ref_pic_sets.

As a consequence, the st_ref_pic_set structure is not defined as an AbstractVideoStructure because it cannot be parsed alone. The AbstractVideoStructure is a vector of st_ref_pic_set. The vector structure is used because the st_ref_pic_set structure are accessed by index.

The constructor parses a list of num_short_term_ref_pic_sets - 1 elements.

Unlike other AbstractVideoStructure subclasses, the parse() methods do no clear the content and do not rebuild the complete object. The parse() methods only parse one st_ref_pic_set structure which is placed in an existing element of the vector. The parse() methods need one argument: the stRpsIdx index of the element to parse from memory.

To completely rebuild a new HEVCShortTermReferencePictureSetList, use reset() and then parse each element is sequence.

Constructor & Destructor Documentation

◆ HEVCShortTermReferencePictureSetList()

ts::HEVCShortTermReferencePictureSetList::HEVCShortTermReferencePictureSetList	(	const uint8_t *	data = `nullptr`,
		size_t	size = `0`,
		uint32_t	num_short_term_ref_pic_sets = `0`
	)

Constructor from a binary area.

The constructor resizes the vector with num_short_term_ref_pic_sets + 1 elements and parses the elements indexes from 0 to num_short_term_ref_pic_sets. The last element is left uninitialized.

Parameters

[in]	data	Address of binary data to analyze.
[in]	size	Size in bytes of binary data to analyze.
[in]	num_short_term_ref_pic_sets	The corresponding HEVC parameter.

Member Function Documentation

◆ reset()

bool ts::HEVCShortTermReferencePictureSetList::reset ( uint32_t num_short_term_ref_pic_sets )

Reset this object, makes it valid, resize the vector with empty st_ref_pic_set structures.

Parameters

[in] num_short_term_ref_pic_sets The corresponding HEVC parameter.

Returns: True on success, false on invalid size.

◆ num_short_term_ref_pic_sets()

uint32_t ts::HEVCShortTermReferencePictureSetList::num_short_term_ref_pic_sets ( ) const

inline

Get the num_short_term_ref_pic_sets parameter of the list of st_ref_pic_set structures.

In practice, this is the size of the list of the ShortTermReferencePictureSet. The ShortTermReferencePictureSet index 0 to num_short_term_ref_pic_sets - 1 are stored in the HEVCSequenceParameterSet. The one with index num_short_term_ref_pic_sets, when present, is directly stored in the slice header.

Returns: The num_short_term_ref_pic_sets parameter of the list of st_ref_pic_set structures.

◆ clear()

virtual void ts::HEVCShortTermReferencePictureSetList::clear ( )

overridevirtual

Clear all values.

Should be reimplemented by subclasses. The data are marked invalid.

Reimplemented from ts::AbstractVideoData.

◆ parse() [1/2]

virtual bool ts::HEVCShortTermReferencePictureSetList::parse	(	const uint8_t *	addr,
		size_t	size,
		std::initializer_list< uint32_t >	params = `std::initializer_list< uint32_t >()`
	)

overridevirtual

Parse a memory area containing binary video data of the expected type.

Must be reimplemented by subclasses. The data are marked as valid or invalid.

Parameters

[in]	addr	Address of the binary data to parse.
[in]	size	Size in bytes of the binary data to parse.
[in]	params	Additional parameters. May be needed by some structures.

Returns: The valid flag.

Reimplemented from ts::AbstractVideoStructure.

◆ parse() [2/2]

virtual bool ts::HEVCShortTermReferencePictureSetList::parse	(	AVCParser &	parser,
		std::initializer_list< uint32_t >	params = `std::initializer_list< uint32_t >()`
	)

overridevirtual

Parse the structure.

Must be reimplemented by subclasses. The data are marked as valid or invalid.

Parameters

[in,out]	parser	The parser of an AVC stream.
[in]	params	Additional parameters. May be needed by some structures.

Returns: The valid flag.

Implements ts::AbstractVideoStructure.

◆ display()

virtual std::ostream & ts::HEVCShortTermReferencePictureSetList::display	(	std::ostream &	stream = `std::cout`,
		const UString &	margin = `UString()`,
		int	level = `Severity::Info`
	)		const

overridevirtual

Display the content of this object to a stream.

Parameters

[in,out]	stream	The stream where to print the content. Standard output by default.
[in]	margin	The prefix string on each line, empty by default.
[in]	level	Severity level (for instance, Severity::Info or Severity::Debug may display more information).

Returns: A reference to stream.

Implements ts::DisplayInterface.

◆ disp() [1/2]

template<typename INT >
requires std::integral<INT>

void ts::AbstractVideoData::disp	(	std::ostream &	out,
		const UString &	margin,
		const UChar *	name,
		INT	n
	)		const

inlineprotectedinherited

Display helper for subclasses.

Display an integer value.

Template Parameters

INT	An integer type.

Parameters

[in,out]	out	The stream where to print the content.
[in]	margin	The prefix string on each line.
[in]	name	A name to display for the value.
[in]	n	The integer value to display.

◆ disp() [2/2]

template<typename INT >
requires std::integral<INT>

void ts::AbstractVideoData::disp	(	std::ostream &	out,
		const UString &	margin,
		const UChar *	name,
		std::vector< INT >	n
	)		const

inlineprotectedinherited

Display helper for subclasses.

Display a vector of integer value.

Template Parameters

INT	An integer type.

Parameters

[in,out]	out	The stream where to print the content.
[in]	margin	The prefix string on each line.
[in]	name	A name to display for the value.
[in]	n	The integer values to display.

Member Data Documentation

◆ valid

bool ts::AbstractVideoData::valid = false

inherited

Valid flag.

Other fields are significant only if valid is true.

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

tsHEVCShortTermReferencePictureSetList.h

Classes

Public Types

Public Member Functions

Public Attributes

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ HEVCShortTermReferencePictureSetList()

Member Function Documentation

◆ reset()

◆ num_short_term_ref_pic_sets()

◆ clear()

◆ parse() [1/2]

◆ parse() [2/2]

◆ display()

◆ disp() [1/2]

◆ disp() [2/2]

Member Data Documentation

◆ valid