Man pages sections > man3 > Barcode::ZBar

Barcode::ZBar - Perl interface to the ZBar Barcode Reader

ZBar(3pm) User Contributed Perl Documentation ZBar(3pm)

NAME

Barcode::ZBar - Perl interface to the ZBar Barcode Reader

SYNOPSIS

setup:
    use Barcode::ZBar;
    
    my $reader = Barcode::ZBar::Processor->new();
    $reader->init();
    $reader->set_data_handler(\&my_handler);
scan an image:
    my $image = Barcode::ZBar::Image->new();
    $image->set_format('422P');
    $image->set_size(114, 80);
    $image->set_data($raw_bits);
    $reader->process_image($image);
scan from video:
    $reader->set_visible();
    $reader->set_active();
    $reader->user_wait();
collect results:
    my @symbols = $image->get_symbols();
    foreach my $sym (@symbols) {
        print("decoded: " . $sym->get_type() . ":" . $sym->get_data());
    }

DESCRIPTION

The ZBar Bar Code Reader is a library for scanning and decoding bar codes from various sources such as video streams, image files or raw intensity sensors. It supports EAN, UPC, Code 128, Code 39 and Interleaved 2 of 5.
These are the bindings for interacting directly with the library from Perl.

REFERENCE

Functions

version()
Returns the version of the zbar library as "major. minor".
increase_verbosity()
Increases global library debug by one level.
set_verbosity(level)
Sets global library debug to the indicated level. Higher numbers give more verbosity.
parse_config(configstr)
Parse a decoder configuration setting into a list containing the symbology constant, config constant, and value to set. See the documentation for "zbarcam"/"zbarimg" for available configuration options.

Constants

Width stream "color" constants:
SPACE
Light area or space between bars.
BAR
Dark area or colored bar segment.

SEE ALSO

Barcode::ZBar::Processor, Barcode::ZBar::ImageScanner, Barcode::ZBar::Image, Barcode::ZBar::Symbol, Barcode::ZBar::Scanner, Barcode::ZBar::Decoder
zbarimg(1), zbarcam(1)
http://zbar.sf.net

AUTHOR

Jeff Brown, <spadix@users.sourceforge.net> Copyright 2008-2009 (c) Jeff Brown <spadix@users.sourceforge.net>
The ZBar Bar Code Reader is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
2017-07-22 perl v5.26.0