#include <Decoder.h>

Public Member Functions
void	destBufferSetNew (std::vector< SourceDestBuffer > &dbufs) override

size_t	inputProcess (const char *source, const size_t availableByteCount) override

virtual size_t	inputProcessAligned (const char *inbuf, const size_t firstBit, const size_t endBit)=0

void	stateReset () override

uint64_t	totalRecordsCompleted () override

Public Member Functions inherited from e57::Decoder
unsigned	bytestreamNumber () const

	Decoder ()=delete

virtual void	destBufferSetNew (std::vector< SourceDestBuffer > &dbufs)=0

virtual size_t	inputProcess (const char *source, const size_t count)=0

virtual void	stateReset ()=0

virtual uint64_t	totalRecordsCompleted ()=0

virtual	~Decoder ()=default

Protected Member Functions
	BitpackDecoder (unsigned bytestreamNumber, SourceDestBuffer &dbuf, unsigned alignmentSize, uint64_t maxRecordCount)

void	inBufferShiftDown ()

Protected Member Functions inherited from e57::Decoder
	Decoder (unsigned bytestreamNumber)

Protected Attributes
unsigned int	bitsPerWord_

unsigned int	bytesPerWord_

uint64_t	currentRecordIndex_ = 0

std::shared_ptr< SourceDestBufferImpl >	destBuffer_

std::vector< char >	inBuffer_

unsigned int	inBufferAlignmentSize_

size_t	inBufferEndByte_ = 0

size_t	inBufferFirstBit_ = 0

uint64_t	maxRecordCount_ = 0

Protected Attributes inherited from e57::Decoder
unsigned int	bytestreamNumber_

Additional Inherited Members
Static Public Member Functions inherited from e57::Decoder
static std::shared_ptr< Decoder >	DecoderFactory (unsigned bytestreamNumber, const CompressedVectorNodeImpl *cVector, std::vector< SourceDestBuffer > &dbufs, const ustring &codecPath)

Constructor & Destructor Documentation

◆ BitpackDecoder()

BitpackDecoder::BitpackDecoder	(	unsigned	bytestreamNumber,
		SourceDestBuffer &	dbuf,
		unsigned	alignmentSize,
		uint64_t	maxRecordCount
	)

protected

Member Function Documentation

◆ destBufferSetNew()

void BitpackDecoder::destBufferSetNew ( std::vector< SourceDestBuffer > & dbufs )

overridevirtual

Implements e57::Decoder.

References destBuffer_, e57::E57_ERROR_INTERNAL, and e57::toString().

◆ inBufferShiftDown()

void BitpackDecoder::inBufferShiftDown ( )

protected

Move uneaten data down to beginning of inBuffer_. Keep on natural boundaries. Moves all of word that contains inBufferFirstBit.

Overlapping regions ok with memmove().

Update indexes

References bitsPerWord_, bytesPerWord_, e57::E57_ERROR_INTERNAL, inBuffer_, inBufferEndByte_, inBufferFirstBit_, and e57::toString().

Referenced by inputProcess().

◆ inputProcess()

size_t BitpackDecoder::inputProcess	(	const char *	source,
		const size_t	availableByteCount
	)

overridevirtual

Copy input bytes from caller, if any

Advance tail pointer.

Update amount available from caller

??? fix doc for new bit interface Now that we have input stored in an aligned buffer, call derived class to try to eat some Note that end of filled buffer may not be at a natural boundary. The subclass may transfer this partial word in a full word transfer, but it must be done carefully to only use the defined bits. inBuffer_ is a multiple of largest word size, so this full word transfer off the end will always be in defined memory.

Shift uneaten data to beginning of inBuffer_, keep on natural word boundaries.

If the lower level processing didn't eat anything on this iteration, stop looping and tell caller how much we ate or stored.

Return the number of bytes we ate/saved.

Implements e57::Decoder.

References bitsPerWord_, bytesPerWord_, e57::E57_ERROR_INTERNAL, inBuffer_, inBufferEndByte_, inBufferFirstBit_, inBufferShiftDown(), inputProcessAligned(), and e57::toString().