Base class for AVC access units, aka NALunits. More...

#include <tsAbstractAVCAccessUnit.h>

Inheritance diagram for ts::AbstractAVCAccessUnit:

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Collaboration diagram for ts::AbstractAVCAccessUnit:

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Public Types
using	SuperClass = AbstractVideoAccessUnit
	Unified name for superclass.

Public Member Functions
	AbstractAVCAccessUnit ()=default
	Constructor.

virtual void	clear () override
	Clear all values.

virtual std::ostream &	display (std::ostream &stream=std::cout, const UString &margin=UString(), int level=Severity::Info) const =0
	Display the content of this object to a stream.

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.

Public Attributes
uint8_t	forbidden_zero_bit = 0
	See ISO/IEC 14496-10 section 7.3.1.

uint8_t	nal_ref_idc = 0
	See ISO/IEC 14496-10 section 7.3.1.

uint8_t	nal_unit_type = 0
	See ISO/IEC 14496-10 section 7.3.1.

size_t	rbsp_trailing_bits_count = 0
	rbsp_trailing_bits_count

bool	rbsp_trailing_bits_valid = false
	rbsp_trailing_bits_valid

bool	valid = false
	Valid flag.

Protected Member Functions
template<typename INT , typename std::enable_if< std::is_integral< INT >::value >::type * = nullptr>
void	disp (std::ostream &out, const UString &margin, const UChar *name, INT n) const
	Display helper for subclasses.

template<typename INT , typename std::enable_if< std::is_integral< INT >::value >::type * = nullptr>
void	disp (std::ostream &out, const UString &margin, const UChar *name, std::vector< INT > n) const
	Display helper for subclasses.

virtual bool	parseBody (AVCParser &parser, std::initializer_list< uint32_t > params=std::initializer_list< uint32_t >())=0
	Parse the body of the access unit up to but not including the rbsp_trailing_bits.

virtual bool	parseHeader (const uint8_t *&, size_t &, std::initializer_list< uint32_t >=std::initializer_list< uint32_t >()) override
	Parse the header of the access unit.

Detailed Description

Base class for AVC access units, aka NALunits.

See also: ISO/IEC 14496-10, ITU-T Rec. H.264, section 7.3.1

Member Function Documentation

◆ clear()

virtual void ts::AbstractAVCAccessUnit::clear ( )

overridevirtual

Clear all values.

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

Reimplemented from ts::AbstractVideoAccessUnit.

Reimplemented in ts::AVCAccessUnitDelimiter, and ts::AVCSequenceParameterSet.

◆ parseHeader()

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

overrideprotectedvirtual

Parse the header of the access unit.

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

Parameters

[in,out]	addr	Address of the binary data to parse. Adjusted after header.
[in,out]	size	Size in bytes of the binary data to parse. Adjusted as remaining size after header.
[in]	params	Additional parameters. May be needed by some structures.

Returns: The valid flag.

Implements ts::AbstractVideoAccessUnit.

◆ parse()

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

overridevirtualinherited

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.

Implements ts::AbstractVideoData.

◆ parseBody()

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

protectedpure virtualinherited

Parse the body of the access unit up to but not including the rbsp_trailing_bits.

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

Parameters

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

Returns: The valid flag.

Implemented in ts::AVCSequenceParameterSet, ts::HEVCSequenceParameterSet, ts::AVCAccessUnitDelimiter, ts::HEVCAccessUnitDelimiter, and ts::VVCAccessUnitDelimiter.

◆ disp() [1/2]

template<typename INT , typename std::enable_if< std::is_integral< INT >::value >::type * = nullptr>

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 , typename std::enable_if< std::is_integral< INT >::value >::type * = nullptr>

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.

◆ display()

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

pure virtualinherited

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.

Implemented in ts::HEVCHRDParameters, ts::HEVCProfileTierLevel, ts::HEVCScalingListData, ts::HEVCShortTermReferencePictureSetList, ts::ModulationArgs, ts::SignalState, ts::AVCHRDParameters, ts::HEVCAccessUnitDelimiter, ts::HEVCVUIParameters, ts::AVCAccessUnitDelimiter, ts::AVCSequenceParameterSet, ts::AVCVUIParameters, ts::HEVCSequenceParameterSet, and ts::VVCAccessUnitDelimiter.

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:

tsAbstractAVCAccessUnit.h

Public Types

Public Member Functions

Public Attributes

Protected Member Functions

Detailed Description

Member Function Documentation

◆ clear()

◆ parseHeader()

◆ parse()

◆ parseBody()

◆ disp() [1/2]

◆ disp() [2/2]

◆ display()

Member Data Documentation

◆ valid