Barcode::ZBar(3pm)

Usage

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());
    }

Overview

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

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.

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

Copyright and license

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.

Releases

8 releases since Debian 6.0 (Squeeze); the text changed 7 times.

6.0
7
8
9
10
11
12
13