Barcode::ZBar - Perl interface to the ZBar Barcode Reader
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());
}
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.
- 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.
Width stream "color" constants:
- SPACE
- Light area or space between bars.
- BAR
- Dark area or colored bar segment.
Decoder configuration constants:
- Config::ENABLE
- Config::ADD_CHECK
- Config::EMIT_CHECK
- Config::ASCII
- Config::MIN_LEN
- Config::MAX_LEN
- Config::POSITION
- Config::X_DENSITY
- Config::Y_DENSITY
Symbology modifier constants:
- Modifier::GS1
- Modifier::AIM
Symbol orientation constants:
- Orient::UNKNOWN
- Orient::UP
- Orient::RIGHT
- Orient::DOWN
- Orient::LEFT
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
Jeff Brown, <
[email protected]>
Copyright 2008-2010 (c) Jeff Brown <
[email protected]>
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.