Implements common utilities for StreamIO module. More...

#include "ioUtil.h"

Functions
void	moveBitPointer (EXIStream *strm, unsigned int bitPositions)
	Moves the BitPointer with certain positions. More...

unsigned char	getBitsNumber (uint64_t val)
	Determine the number of bits needed to encode an unsigned integer value ⌈ log 2 m ⌉ from the spec is equal to getBitsNumber(m - 1) More...

unsigned int	log2INT (uint64_t val)
	Log2 function. More...

errorCode	readEXIChunkForParsing (EXIStream *strm, unsigned int numBytesToBeRead)
	Reads an EXI stream chunk using buffer.ioStrm.readWriteToStream if available. More...

errorCode	writeEncodedEXIChunk (EXIStream *strm)
	Flushes the EXI buffer using buffer.ioStrm.readWriteToStream if available. More...

Detailed Description

Definition in file ioUtil.c.

Function Documentation

unsigned char getBitsNumber ( uint64_t val)

Parameters

[in] val unsigned integer value

Definition at line 37 of file ioUtil.c.

unsigned int log2INT ( uint64_t val)

Used to determine the number of bits needed to encode a unsigned integer value The code taken from: http://www-graphics.stanford.edu/~seander/bithacks.html#IntegerLog

Parameters

[in] val uint32_t value

Definition at line 83 of file ioUtil.c.

Takes care of byteIndex increasing when the movement cross a byte boundary

Parameters

[in]	strm	EXI stream of bits
[in]	bitPositions	the number of bit positions to move the pointer

Definition at line 20 of file ioUtil.c.

errorCode readEXIChunkForParsing	(	EXIStream *	strm,
		unsigned int	numBytesToBeRead
	)

Parameters

[in]	strm	EXI stream of bits
[in]	numBytesToBeRead	the number of bytes that are requested for parsing

Definition at line 101 of file ioUtil.c.

errorCode writeEncodedEXIChunk ( EXIStream * strm)

Parameters

[in] strm EXI stream of bits

Definition at line 130 of file ioUtil.c.