ts::CRC32 Class Reference

Cyclic Redundancy Check as used in MPEG sections. More...

#include <tsCRC32.h>

Public Types
enum	Validation {   IGNORE = 0 ,   CHECK = 1 ,   COMPUTE = 2 }
	What to do with a CRC32. More...

Public Member Functions
	CRC32 ()
	Default constructor.
	CRC32 (const void *data, size_t size)
	Constructor, compute the CRC32 of a data area.
void	add (const void *data, size_t size)
	Continue the computation of a data area, following a previous CRC32.
	operator uint32_t () const
	Convert to a 32-bit integer.
bool	operator== (const CRC32 &c) const
	Comparison operator with another CRC32 instance.
void	reset ()
	Reset the CRC32 computation, restart a new computation.
uint32_t	value () const
	Get the value of the CRC32 as computed so far.

Detailed Description

Cyclic Redundancy Check as used in MPEG sections.

Member Enumeration Documentation

Validation

enum ts::CRC32::Validation

What to do with a CRC32.

Used when building MPEG sections.

Enumerator
IGNORE	Ignore the section CRC32.
CHECK	Check that the value of the CRC32 of the section is correct and fail if it isn't.
COMPUTE	Recompute a fresh new CRC32 value based on the content of the section.

Constructor & Destructor Documentation

CRC32()

ts::CRC32::CRC32 ( const void *  data, size_t  size  )

inline

Constructor, compute the CRC32 of a data area.

Parameters

[in]	data	Address of area to analyze.
[in]	size	Size in bytes of area to analyze.

Member Function Documentation

add()

void ts::CRC32::add	(	const void *	data,
		size_t	size
	)

Continue the computation of a data area, following a previous CRC32.

Parameters

[in]	data	Address of area to analyze.
[in]	size	Size in bytes of area to analyze.

value()

uint32_t ts::CRC32::value

(

)

const

Get the value of the CRC32 as computed so far.

Returns

The value of the CRC32 as computed so far.

operator uint32_t()

ts::CRC32::operator uint32_t ( ) const

inline

Convert to a 32-bit integer.

Same as value() method.

Returns

The value of the CRC32 as computed so far.

operator==()

bool ts::CRC32::operator== ( const CRC32 &  c ) const

inline

Comparison operator with another CRC32 instance.

Parameters

[in]

c

Other instance to compare.

Returns

True if the two CRC32 are identical, false otherwise.

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

• tsCRC32.h