TSDuck Version 3.32-2769 (TSDuck - The MPEG Transport Stream Toolkit)
ts::AbstractAVCAccessUnit Class Referenceabstract

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

Inheritance diagram for ts::AbstractAVCAccessUnit:
Collaboration diagram for ts::AbstractAVCAccessUnit:

Public Types

typedef AbstractVideoAccessUnit SuperClass
 Unified name for superclass.
 

Public Member Functions

 AbstractAVCAccessUnit ()
 Constructor.
 
virtual void clear () override
 Clear all values. More...
 
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. More...
 
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. More...
 

Public Attributes

uint8_t forbidden_zero_bit
 See ISO/IEC 14496-10 section 7.3.1.
 
uint8_t nal_ref_idc
 See ISO/IEC 14496-10 section 7.3.1.
 
uint8_t nal_unit_type
 See ISO/IEC 14496-10 section 7.3.1.
 
size_t rbsp_trailing_bits_count
 rbsp_trailing_bits_count
 
bool rbsp_trailing_bits_valid
 rbsp_trailing_bits_valid
 
bool valid
 Valid flag. More...
 

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. More...
 
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. More...
 
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. More...
 
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. More...
 

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::AVCSequenceParameterSet, and ts::AVCAccessUnitDelimiter.

◆ 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]addrAddress of the binary data to parse. Adjusted after header.
[in,out]sizeSize in bytes of the binary data to parse. Adjusted as remaining size after header.
[in]paramsAdditional 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]addrAddress of the binary data to parse.
[in]sizeSize in bytes of the binary data to parse.
[in]paramsAdditional 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]parserThe parser of an AVC-like video stream.
[in]paramsAdditional parameters. May be needed by some structures.
Returns
The valid flag.

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

◆ 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
INTAn integer type.
Parameters
[in,out]outThe stream where to print the content.
[in]marginThe prefix string on each line.
[in]nameA name to display for the value.
[in]nThe 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
INTAn integer type.
Parameters
[in,out]outThe stream where to print the content.
[in]marginThe prefix string on each line.
[in]nameA name to display for the value.
[in]nThe 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]streamThe stream where to print the content. Standard output by default.
[in]marginThe prefix string on each line, empty by default.
[in]levelSeverity level (for instance, Severity::Info or Severity::Debug may display more information).
Returns
A reference to stream.

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

Member Data Documentation

◆ valid

bool ts::AbstractVideoData::valid
inherited

Valid flag.

Other fields are significant only if valid is true.


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