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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-13/UPC-A, UPC-E, EAN-8, Code 128, Code 93, Code 39, Codabar, Interleaved 2 of 5 and QR Code.

These are the bindings for interacting directly with the library from Perl.

REFERENCE

Functions

Returns the version of the zbar library as "major.minor".
Increases global library debug by one level.
Sets global library debug to the indicated level. Higher numbers give more verbosity.
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:

Light area or space between bars.
Dark area or colored bar segment.

Decoder configuration constants:

Symbology modifier constants:

Symbol orientation constants:

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 AND LICENSE

Copyright 2008-2010 (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.

2020-02-01 perl v5.30.0