cH264Parser Class Reference

Public Member Functions
	cH264Parser (void)
virtual int	Parse (const uchar *Data, int Length, int Pid) override
Public Member Functions inherited from cFrameParser
	cFrameParser (void)
virtual	~cFrameParser ()
void	SetDebug (bool Debug)
bool	NewFrame (void)
bool	IndependentFrame (void)
int	IFrameTemporalReferenceOffset (void)
uint16_t	FrameWidth (void)
uint16_t	FrameHeight (void)
double	FramesPerSecond (void)
eScanType	ScanType (void)
eAspectRatio	AspectRatio (void)

Protected Member Functions
uchar	GetByte (bool Raw=false)
uchar	GetBit (void)
uint32_t	GetBits (int Bits)
uint32_t	GetGolombUe (void)
int32_t	GetGolombSe (void)
void	ParseAccessUnitDelimiter (void)
void	ParseSequenceParameterSet (void)
void	ParseSliceHeader (void)

Protected Attributes
cTsPayload	tsPayload
uint32_t	scanner
bool	gotAccessUnitDelimiter
bool	gotSequenceParameterSet
Protected Attributes inherited from cFrameParser
bool	debug
bool	newFrame
bool	independentFrame
int	iFrameTemporalReferenceOffset
uint16_t	frameWidth
uint16_t	frameHeight
double	framesPerSecond
eScanType	scanType
eAspectRatio	aspectRatio

Private Types
enum	eNalUnitType { nutCodedSliceNonIdr = 1 , nutCodedSliceIdr = 5 , nutSequenceParameterSet = 7 , nutAccessUnitDelimiter = 9 }

Private Attributes
uchar	byte
int	bit
int	zeroBytes
bool	separate_colour_plane_flag
int	log2_max_frame_num
bool	frame_mbs_only_flag

Detailed Description

Definition at line 1398 of file remux.c.

Member Enumeration Documentation

eNalUnitType

enum cH264Parser::eNalUnitType

private

Enumerator
nutCodedSliceNonIdr
nutCodedSliceIdr
nutSequenceParameterSet
nutAccessUnitDelimiter

Definition at line 1400 of file remux.c.

Constructor & Destructor Documentation

cH264Parser()

cH264Parser::cH264Parser

(

void

)

Sets up a new H.264 parser.

This class parses only the data absolutely necessary to determine the frame borders and field count of the given H264 material.

Definition at line 1437 of file remux.c.

References bit, EMPTY_SCANNER, frame_mbs_only_flag, gotAccessUnitDelimiter, gotSequenceParameterSet, log2_max_frame_num, scanner, separate_colour_plane_flag, and zeroBytes.

Referenced by cH265Parser::cH265Parser().

Member Function Documentation

GetBit()

uchar cH264Parser::GetBit ( void )

protected

Definition at line 1469 of file remux.c.

References bit, and GetByte().

Referenced by GetBits(), GetGolombUe(), cH265Parser::Parse(), ParseSequenceParameterSet(), cH265Parser::ParseSequenceParameterSet(), and ParseSliceHeader().

GetBits()

uint32_t cH264Parser::GetBits ( int Bits )

protected

Definition at line 1478 of file remux.c.

References GetBit().

Referenced by GetGolombUe(), ParseSequenceParameterSet(), cH265Parser::ParseSequenceParameterSet(), and ParseSliceHeader().

GetByte()

uchar cH264Parser::GetByte ( bool Raw = false )

protected

Gets the next data byte.

If Raw is true, no filtering will be done. With Raw set to false, if the byte sequence 0x000003 is encountered, the byte with 0x03 will be skipped.

Definition at line 1450 of file remux.c.

References bit, tsPayload, and zeroBytes.

Referenced by GetBit(), Parse(), cH265Parser::Parse(), ParseAccessUnitDelimiter(), ParseSequenceParameterSet(), and cH265Parser::ParseSequenceParameterSet().

GetGolombSe()

int32_t cH264Parser::GetGolombSe ( void )

protected

Definition at line 1494 of file remux.c.

References GetGolombUe().

Referenced by ParseSequenceParameterSet(), and cH265Parser::ParseSequenceParameterSet().

GetGolombUe()

uint32_t cH264Parser::GetGolombUe ( void )

protected

Definition at line 1486 of file remux.c.

References GetBit(), and GetBits().

Referenced by GetGolombSe(), ParseSequenceParameterSet(), cH265Parser::ParseSequenceParameterSet(), and ParseSliceHeader().

Parse()

int cH264Parser::Parse ( const uchar * Data, int Length, int Pid )

overridevirtual

Parses the given Data, which is a sequence of Length bytes of TS packets.

The payload in the TS packets with the given Pid is searched for just enough information to determine the beginning and type of the next video frame. Returns the number of bytes parsed. Upon return, the functions NewFrame() and IndependentFrame() can be called to retrieve the required information.

Implements cFrameParser.

Reimplemented in cH265Parser.

Definition at line 1506 of file remux.c.

References dbgframes, cFrameParser::debug, EMPTY_SCANNER, GetByte(), gotAccessUnitDelimiter, gotSequenceParameterSet, cFrameParser::independentFrame, cFrameParser::newFrame, nutAccessUnitDelimiter, nutCodedSliceIdr, nutCodedSliceNonIdr, nutSequenceParameterSet, ParseAccessUnitDelimiter(), ParseSequenceParameterSet(), ParseSliceHeader(), scanner, tsPayload, and TsPayloadStart().

ParseAccessUnitDelimiter()

void cH264Parser::ParseAccessUnitDelimiter ( void )

protected

Definition at line 1549 of file remux.c.

References dbgframes, cFrameParser::debug, GetByte(), and gotSequenceParameterSet.

Referenced by Parse().

ParseSequenceParameterSet()

void cH264Parser::ParseSequenceParameterSet ( void )

protected

Definition at line 1556 of file remux.c.

References ar_16_9, cFrameParser::aspectRatio, AspectRatioTexts, dbgframes, cFrameParser::debug, dsyslog, frame_mbs_only_flag, cFrameParser::frameHeight, cFrameParser::framesPerSecond, cFrameParser::frameWidth, GetBit(), GetBits(), GetByte(), GetGolombSe(), GetGolombUe(), gotAccessUnitDelimiter, gotSequenceParameterSet, log2_max_frame_num, cFrameParser::scanType, ScanTypeChars, separate_colour_plane_flag, cString::sprintf(), stInterlaced, and stProgressive.

Referenced by Parse().

ParseSliceHeader()

void cH264Parser::ParseSliceHeader ( void )

protected

Definition at line 1674 of file remux.c.

References dbgframes, cFrameParser::debug, frame_mbs_only_flag, GetBit(), GetBits(), GetGolombUe(), cFrameParser::independentFrame, log2_max_frame_num, cFrameParser::newFrame, and separate_colour_plane_flag.

Referenced by Parse().

Member Data Documentation

bit

int cH264Parser::bit

private

Definition at line 1407 of file remux.c.

Referenced by cH264Parser(), GetBit(), and GetByte().

byte

uchar cH264Parser::byte

private

Definition at line 1406 of file remux.c.

frame_mbs_only_flag

bool cH264Parser::frame_mbs_only_flag

private

Definition at line 1412 of file remux.c.

Referenced by cH264Parser(), ParseSequenceParameterSet(), and ParseSliceHeader().

gotAccessUnitDelimiter

bool cH264Parser::gotAccessUnitDelimiter

protected

Definition at line 1416 of file remux.c.

Referenced by cH264Parser(), Parse(), and ParseSequenceParameterSet().

gotSequenceParameterSet

bool cH264Parser::gotSequenceParameterSet

protected

Definition at line 1417 of file remux.c.

Referenced by cH264Parser(), Parse(), cH265Parser::Parse(), ParseAccessUnitDelimiter(), and ParseSequenceParameterSet().

log2_max_frame_num

int cH264Parser::log2_max_frame_num

private

Definition at line 1411 of file remux.c.

Referenced by cH264Parser(), ParseSequenceParameterSet(), and ParseSliceHeader().

scanner

uint32_t cH264Parser::scanner

protected

Definition at line 1415 of file remux.c.

Referenced by cH264Parser(), Parse(), and cH265Parser::Parse().

separate_colour_plane_flag

bool cH264Parser::separate_colour_plane_flag

private

Definition at line 1410 of file remux.c.

Referenced by cH264Parser(), ParseSequenceParameterSet(), cH265Parser::ParseSequenceParameterSet(), and ParseSliceHeader().

tsPayload

cTsPayload cH264Parser::tsPayload

protected

Definition at line 1414 of file remux.c.

Referenced by GetByte(), Parse(), and cH265Parser::Parse().

zeroBytes

int cH264Parser::zeroBytes

private

Definition at line 1408 of file remux.c.

Referenced by cH264Parser(), and GetByte().

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

• remux.c