CxxUtils::BitPacker16< STREAM > Class Template Reference

Pack a set of values bitwise into a stream. More...

#include <BitPacker.h>

Collaboration diagram for CxxUtils::BitPacker16< STREAM >:

Public Member Functions
	BitPacker16 (STREAM &stream)
	Constructor.
	BitPacker16 (uint8_t nbits, STREAM &stream)
	Constructor.
	~BitPacker16 ()
	Destructor.
void	pack (uint32_t x)
	Pack one value to the stream.

Private Attributes
uint32_t	m_buf
	Buffer for the current words being packed.
uint8_t	m_nbuf
	Number of valid words currently buffered.
STREAM &	m_stream
	The output stream.

Detailed Description

template<class STREAM>
class CxxUtils::BitPacker16< STREAM >

Pack a set of values bitwise into a stream.

This helper can be used to pack a set of values into 32-bit words and write them to a stream. This is a special case for 16-bit values.

STREAM should support output (operator<<) with uint32_t (satisfied by a ROOT TBuffer).

Definition at line 146 of file BitPacker.h.

Constructor & Destructor Documentation

BitPacker16() [1/2]

template<class STREAM>

CxxUtils::BitPacker16< STREAM >::BitPacker16

(

STREAM &

stream

)

Constructor.

Parameters

nbits	Number of bits per item to use in the packed representation.
stream	Output stream object.

BitPacker16() [2/2]

template<class STREAM>

CxxUtils::BitPacker16< STREAM >::BitPacker16	(	uint8_t	nbits,
		STREAM &	stream )

Constructor.

Parameters

nbits	Must be 16.
stream	Output stream object.

~BitPacker16()

template<class STREAM>

CxxUtils::BitPacker16< STREAM >::~BitPacker16

(

)

Destructor.

This may flush buffered data to the output stream.

Member Function Documentation

pack()

template<class STREAM>

void CxxUtils::BitPacker16< STREAM >::pack

(

uint32_t

x

)

Pack one value to the stream.

Parameters

x	The value to pack. The upper bits should all be clear.

Member Data Documentation

m_buf

template<class STREAM>

uint32_t CxxUtils::BitPacker16< STREAM >::m_buf

private

Buffer for the current words being packed.

Definition at line 183 of file BitPacker.h.

m_nbuf

template<class STREAM>

uint8_t CxxUtils::BitPacker16< STREAM >::m_nbuf

private

Number of valid words currently buffered.

Definition at line 186 of file BitPacker.h.

m_stream

template<class STREAM>

STREAM& CxxUtils::BitPacker16< STREAM >::m_stream

private

The output stream.

Definition at line 189 of file BitPacker.h.

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

• BitPacker.h