QRrsItem Class Reference

Reed-Solomon encoder item. More...

Public Member Functions
	modnn ($x)
	Modulo function in defined Field. More...
	encode_rs_char ($data, &$parity)
	Appends char into encoder. More...

Static Public Member Functions
static	init_rs_char ($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
	Encoder initialisation. More...

Public Attributes
	$mm
	Bits per symbol.
	$nn
	Symbols per block (= (1<<mm)-1)
	$alpha_to = array()
	Log lookup table.
	$index_of = array()
	Antilog lookup table.
	$genpoly = array()
	Generator polynomial.
	$nroots
	Number of generator roots = number of parity symbols.
	$fcr
	First consecutive root, index form.
	$prim
	Primitive element, index form.
	$iprim
	Prim-th root of 1, index form.
	$pad
	Padding bytes in shortened block.
	$gfpoly
	Galois Field Polynomial.

Detailed Description

Reed-Solomon encoder item.

Member Function Documentation

QRrsItem::encode_rs_char	(		$data,
		&	$parity
	)

Appends char into encoder.

Parameters

String	input
Array	parity table

static QRrsItem::init_rs_char (   $symsize,   $gfpoly,   $fcr,   $prim,   $nroots,   $pad  )

static

Encoder initialisation.

Parameters

Integer	$symsize	symbol size, bit count (1..8)
Integer	$gfpoly	Galois Field Polynomial
Integer	$fcr	First consecutive root
Integer	$prim	Primitive element
Integer	$nroots	Number of generator roots = number of parity symbols
Integer	$pad	Padding bytes in shortened block

QRrsItem::modnn

(

$x)

Modulo function in defined Field.

Parameters

Integer

$x

number to be modulo-mapped

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

• lib/full/qrrscode.php