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#------------------------------------------------------------------------
# Copyright 2008-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
#
# This file is part of the ZBar Bar Code Reader.
#
# 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.
#
# The ZBar Bar Code Reader is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with the ZBar Bar Code Reader; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor,
# Boston, MA 02110-1301 USA
#
# http://sourceforge.net/projects/zbar
#------------------------------------------------------------------------
package Barcode::ZBar;
use 5.006;
use strict;
use warnings;
use Carp;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(SPACE BAR
version increase_verbosity set_verbosity);
our $VERSION = '0.10';
require XSLoader;
XSLoader::load('Barcode::ZBar', $VERSION);
package Barcode::ZBar::Error;
use overload '""' => sub { return($_[0]->error_string()) };
1;
__END__
=head1 NAME
Barcode::ZBar - Perl interface to the ZBar Barcode Reader
=head1 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());
}
=head1 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.
=head1 REFERENCE
=head2 Functions
=over 4
=item version()
Returns the version of the zbar library as "I<major>.I<minor>".
=item increase_verbosity()
Increases global library debug by one level.
=item set_verbosity(I<level>)
Sets global library debug to the indicated level. Higher numbers give
more verbosity.
=item parse_config(I<configstr>)
Parse a decoder configuration setting into a list containing the
symbology constant, config constant, and value to set. See the
documentation for C<zbarcam>/C<zbarimg> for available configuration
options.
=back
=head2 Constants
Width stream "color" constants:
=over 4
=item SPACE
Light area or space between bars.
=item BAR
Dark area or colored bar segment.
=back
Decoder configuration constants:
=over 4
=item Config::ENABLE
=item Config::ADD_CHECK
=item Config::EMIT_CHECK
=item Config::ASCII
=item Config::MIN_LEN
=item Config::MAX_LEN
=item Config::POSITION
=item Config::X_DENSITY
=item Config::Y_DENSITY
=back
Symbology modifier constants:
=over 4
=item Modifier::GS1
=item Modifier::AIM
=back
Symbol orientation constants:
=over 4
=item Orient::UNKNOWN
=item Orient::UP
=item Orient::RIGHT
=item Orient::DOWN
=item Orient::LEFT
=back
=head1 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
=head1 AUTHOR
Jeff Brown, E<lt>spadix@users.sourceforge.netE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2008-2010 (c) Jeff Brown E<lt>spadix@users.sourceforge.netE<gt>
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.
=cut
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