ts::AbstractAVCAccessUnit Class Reference

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

#include <tsAbstractAVCAccessUnit.h>

Inheritance diagram for ts::AbstractAVCAccessUnit:

Collaboration diagram for ts::AbstractAVCAccessUnit:

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 > 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.
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 >
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.

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