Barcode::ZBar::Processor - self-contained bar code reader
my $reader = Barcode::ZBar::Processor->new();
scan an image:
scan from video:
A Barcode::ZBar::Processor may be used to quickly create stand-alone bar code
scanning applications. It has interfaces to scan images or video and to
optionally display a video/image preview to a window.
This interface is not well suited for integration with an existing GUI, as the
library manages the optional preview window and any user interaction. Use a
Barcode::ZBar::ImageScanner or Investigate the avilable widget interfaces for
- Create a new bar code reader instance.
- init([video_device], [enable_display])
- Open a video input device and/or prepare to display
- set_data_handler([handler], [closure])
- Setup a callback to process results whenever new results
are available from the video stream or a static image. The specified
callable will be invoked with the associated Barcode::ZBar::Processor
object and closure as arguments. Closure may be achieved either
using standard Perl closure or by manually passing a scalar via
- Test/set visibility of the output window.
- Enable/disable video streaming and scanning for bar
- Return a list of Barcode::ZBar::Symbol results from the
last scanned image or video frame.
- Wait for the user to press a key/button or close the
window. Bar codes will continue to be processed if video is active.
- Enable video and scan until at least one barcode is found.
Note that multiple results may still be returned.
- Scan a Barcode::ZBar::Image for bar codes.
- Apply a decoder configuration setting. See the
documentation for "zbarcam"/"zbarimg" for available
- request_size(width, height)
- Request a preferred size for the video image from the
device. The request may be adjusted or completely ignored by the driver.
Must be called before "init()"
Barcode::ZBar, Barcode::ZBar::Image, Barcode::ZBar::ImageScanner
Jeff Brown, <email@example.com>
Copyright 2008-2009 (c) Jeff Brown <firstname.lastname@example.org>
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.