Description:

Definition at line 829 of file bitbuffer.hpp.

#include <bitbuffer.hpp>

Inheritance diagram for alib::bitbuffer::BitReader:

Collaboration diagram for alib::bitbuffer::BitReader:

Public Method Index:
	BitReader (BitBufferBase &buffer)
	BitReader (BitBufferBase &buffer, const BitBufferBase::Index &index)
	~BitReader ()
template<lang::ShiftOpRHS TWidth, typename TResult = int>
TResult	ReadBits ()
template<typename TResult = int>
TResult	ReadBits (lang::ShiftOpRHS width)
template<typename TUIntegral>
TUIntegral	ReadInt ()
void	Reset ()
	Resets this reader to the start of the bit buffer.
void	Reset (const BitBufferBase::Index &index)
BitReader &	Sync ()
Public Method Index: inherited from alib::bitbuffer::BitRWBase
BitBufferBase &	GetBuffer () const
BitBufferBase::Index	GetIndex () const
uinteger	RemainingSize () const
uinteger	Usage () const

Protected Type Index:
using	TStorage = BitBufferBase::TStorage
	Local type alias (shortcut).

Protected Field Index:
BitBufferBase::TStorage	word
	The current word, which is partly read and shifted to start with current bit.
Protected Field Index: inherited from alib::bitbuffer::BitRWBase
BitBufferBase &	bb
	The bit buffer to write into. Provided on construction.
BitBufferBase::Index	idx
	The current reading/writing index within bb.

Protected Method Index:
uint16_t	readUIntegral16 ()
uint32_t	readUIntegral32 ()
uint64_t	readUIntegral64 ()
uint8_t	readUIntegral8 ()
Protected Method Index: inherited from alib::bitbuffer::BitRWBase
	BitRWBase (BitBufferBase &buffer)

Type Definition Details:

◆ TStorage

using alib::bitbuffer::BitReader::TStorage = BitBufferBase::TStorage

protected

Local type alias (shortcut).

Definition at line 832 of file bitbuffer.hpp.

Field Details:

◆ word

BitBufferBase::TStorage alib::bitbuffer::BitReader::word

protected

The current word, which is partly read and shifted to start with current bit.

Definition at line 835 of file bitbuffer.hpp.

Constructor(s) / Destructor Details:

◆ BitReader() [1/2]

alib::bitbuffer::BitReader::BitReader ( BitBufferBase & buffer )

inlineexplicit

Constructs a bit reader using the given bit buffer and starting to read at the beginning.

Parameters

buffer The buffer to read from.

Definition at line 840 of file bitbuffer.hpp.

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◆ BitReader() [2/2]

alib::bitbuffer::BitReader::BitReader	(	BitBufferBase &	buffer,
		const BitBufferBase::Index &	index )

inlineexplicit

Constructs a bit reader using the given bit buffer, starting to read at the given Index.

Parameters

buffer	The buffer to read from.
index	An index providing the postion of the first bit to read in buffer.

Definition at line 847 of file bitbuffer.hpp.

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◆ ~BitReader()

alib::bitbuffer::BitReader::~BitReader ( )

inline

Destructs a bit reader. In debug compilations an ALib Assertion is raised if the read operation passed the end of the underlying buffer was performed.

Definition at line 856 of file bitbuffer.hpp.

Method Details:

◆ ReadBits() [1/2]

template<lang::ShiftOpRHS TWidth, typename TResult = int>

TResult alib::bitbuffer::BitReader::ReadBits ( )

Reads the given number of bits from the stream into the given unsigned integral value.

Note: Two different template functions (selected by keyword requires) for the different integral types exist. One to read a number of bits that are less or equal to the internal buffer width, and one if there is more to read than the internal buffer width.

See also: This method uses a template parameter for the number of bits to read. A slightly slower, non-templated version is available with ReadBits(lang::ShiftOpRHS), which is to be used when the number of bits to read is determined only at runtime.

Template Parameters

TWidth	The number of bits in value to write.
TResult	The type of the value to return.

Returns: The value read.

◆ ReadBits() [2/2]

template<typename TResult = int>

TResult alib::bitbuffer::BitReader::ReadBits ( lang::ShiftOpRHS width )

Reads the given number of bits from the stream into the given unsigned integral value.

Note: Two different implementations for different integral types exist and are selected with keyword requires.

See also: A method that uses a template parameter for the number of bits to read, is available with ReadBits<TWidth,TResult>. This might be slightly faster and should be used instead of this method, whenever the number of bits to read is known at compilation time.

Template Parameters

TResult The type of the value to return. Defaults to type int.

Parameters

width The number of bits to read.

Returns: The value read.

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◆ ReadInt()

template<typename TUIntegral>

TUIntegral alib::bitbuffer::BitReader::ReadInt ( )

inline

Reads the given integral value from the stream. Information about the encoding of the values is given with the documentation of WriteBits<TIntegral>(TIntegral).

Note that the implementation of this method consists of various versions which are selected using C++20 keyword requires.

Template Parameters

TUIntegral The unsigned integral type to read.

Returns: The value read from the bit buffer.

Definition at line 1098 of file bitbuffer.hpp.

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◆ readUIntegral16()

uint16_t alib::bitbuffer::BitReader::readUIntegral16 ( )

protected

Internal method that reads a unsigned 16-bit value.

Returns: The value read.

Definition at line 209 of file bitbuffer.cpp.

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◆ readUIntegral32()

uint32_t alib::bitbuffer::BitReader::readUIntegral32 ( )

protected

Internal method that reads a unsigned 32-bit value.

Returns: The value read.

Definition at line 218 of file bitbuffer.cpp.

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◆ readUIntegral64()

uint64_t alib::bitbuffer::BitReader::readUIntegral64 ( )

protected

Internal method that reads a unsigned 64-bit value.

Returns: The value read.

Definition at line 227 of file bitbuffer.cpp.

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◆ readUIntegral8()

uint8_t alib::bitbuffer::BitReader::readUIntegral8 ( )

protected

Internal method that reads a unsigned 8-bit value.

Returns: The value read.

Definition at line 200 of file bitbuffer.cpp.

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◆ Reset() [1/2]

void alib::bitbuffer::BitReader::Reset ( )

inline

Resets this reader to the start of the bit buffer.

Definition at line 863 of file bitbuffer.hpp.

◆ Reset() [2/2]

void alib::bitbuffer::BitReader::Reset ( const BitBufferBase::Index & index )

inline

Resets this reader to the given index position and calls Sync.

Parameters

index The next read position.

Definition at line 871 of file bitbuffer.hpp.

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◆ Sync()

BitReader & alib::bitbuffer::BitReader::Sync ( )

inline

Re-reads the currently fetched storage word from the memory.

Note: This method is not needed in common use cases and implemented solely for the purpose to support unit-tests which write and write in parallel to the same bit buffer.

Returns: A reference to this BitReader to allow concatenated operations.

Definition at line 882 of file bitbuffer.hpp.

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

Description:

Public Method Index:

Protected Type Index:

Protected Field Index:

Protected Method Index:

Type Definition Details:

◆ TStorage

Field Details:

◆ word

Constructor(s) / Destructor Details:

◆ BitReader() [1/2]

◆ BitReader() [2/2]

◆ ~BitReader()

Method Details:

◆ ReadBits() [1/2]

◆ ReadBits() [2/2]

◆ ReadInt()

◆ readUIntegral16()

◆ readUIntegral32()

◆ readUIntegral64()

◆ readUIntegral8()

◆ Reset() [1/2]

◆ Reset() [2/2]

◆ Sync()