API Documentation

Zend/Pdf/Filter/Compression.php

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Zend Framework

LICENSE

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Category
Zend  
Copyright
Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  
Package
Zend_Pdf  
Version
$Id: Compression.php 24594 2012-01-05 21:27:01Z matthew $  

\Zend_Pdf_Filter_Compression

Package: Zend\Pdf

ASCII85 stream filter

Implements
\Zend_Pdf_Filter_Interface
Children
\Zend_Pdf_Filter_Compression_Flate
\Zend_Pdf_Filter_Compression_Lzw
Copyright
Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  

Methods

methodprotected_applyDecodeParams( string $data, array $params ) : string
static

Convert stream data according to the filter params set after decoding.

Parameters
Name Type Description
$data string
$params array
Returns
Type Description
string
methodprotected_applyEncodeParams( string $data, array $params ) : string
static

Convert stream data according to the filter params set before encoding.

Parameters
Name Type Description
$data string
$params array
Returns
Type Description
string
Throws
Exception Description
\Zend_Pdf_Exception
methodprivate_getBitsPerComponentValue( array $params ) : integer
static

Get BitsPerComponent decode param value

Parameters
Name Type Description
$params array
Returns
Type Description
integer
Throws
Exception Description
\Zend_Pdf_Exception
methodprivate_getColorsValue( array $params ) : integer
static

Get Colors decode param value

Parameters
Name Type Description
$params array
Returns
Type Description
integer
Throws
Exception Description
\Zend_Pdf_Exception
methodprivate_getColumnsValue( array $params ) : integer
static

Get Columns decode param value

Parameters
Name Type Description
$params array
Returns
Type Description
integer
methodprivate_getPredictorValue( array $params ) : integer
static

Get Predictor decode param value

Parameters
Name Type Description
$params array
Returns
Type Description
integer
Throws
Exception Description
\Zend_Pdf_Exception
methodprivate_paeth( integer $a, integer $b, integer $c ) : integer
static

Paeth prediction function

Parameters
Name Type Description
$a integer
$b integer
$c integer
Returns
Type Description
integer
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