131 lines
3.8 KiB
C++
Executable File
131 lines
3.8 KiB
C++
Executable File
//------------------------------------------------------------------------
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// Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net>
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//
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// This file is part of the ZBar Bar Code Reader.
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//
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// The ZBar Bar Code Reader is free software; you can redistribute it
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// and/or modify it under the terms of the GNU Lesser Public License as
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// published by the Free Software Foundation; either version 2.1 of
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// the License, or (at your option) any later version.
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//
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// The ZBar Bar Code Reader is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser Public License for more details.
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//
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// You should have received a copy of the GNU Lesser Public License
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// along with the ZBar Bar Code Reader; if not, write to the Free
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// Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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// Boston, MA 02110-1301 USA
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//
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// http://sourceforge.net/projects/zbar
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//------------------------------------------------------------------------
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#ifndef _ZBAR_IMAGE_SCANNER_H_
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#define _ZBAR_IMAGE_SCANNER_H_
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/// @file
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/// Image Scanner C++ wrapper
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#ifndef _ZBAR_H_
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# error "include zbar.h in your application, **not** zbar/ImageScanner.h"
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#endif
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#include "Image.h"
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namespace zbar {
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/// mid-level image scanner interface.
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/// reads barcodes from a 2-D Image
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class ImageScanner {
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public:
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/// constructor.
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ImageScanner (zbar_image_scanner_t *scanner = NULL)
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{
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if(scanner)
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_scanner = scanner;
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else
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_scanner = zbar_image_scanner_create();
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}
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~ImageScanner ()
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{
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zbar_image_scanner_destroy(_scanner);
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}
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/// cast to C image_scanner object
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operator zbar_image_scanner_t* () const
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{
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return(_scanner);
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}
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/// setup result handler callback.
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void set_handler (Image::Handler &handler)
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{
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zbar_image_scanner_set_data_handler(_scanner, handler, &handler);
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}
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/// set config for indicated symbology (0 for all) to specified value.
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/// @see zbar_image_scanner_set_config()
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/// @since 0.4
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int set_config (zbar_symbol_type_t symbology,
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zbar_config_t config,
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int value)
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{
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return(zbar_image_scanner_set_config(_scanner, symbology,
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config, value));
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}
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/// set config parsed from configuration string.
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/// @see zbar_image_scanner_parse_config()
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/// @since 0.4
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int set_config (std::string cfgstr)
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{
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return(zbar_image_scanner_parse_config(_scanner, cfgstr.c_str()));
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}
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/// enable or disable the inter-image result cache.
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/// see zbar_image_scanner_enable_cache()
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void enable_cache (bool enable = true)
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{
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zbar_image_scanner_enable_cache(_scanner, enable);
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}
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/// remove previous results from scanner and image.
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/// @see zbar_image_scanner_recycle_image()
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/// @since 0.10
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void recycle_image (Image &image)
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{
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zbar_image_scanner_recycle_image(_scanner, image);
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}
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/// retrieve decode results for last scanned image.
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/// @see zbar_image_scanner_get_results()
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/// @since 0.10
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const SymbolSet get_results () const {
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return(SymbolSet(zbar_image_scanner_get_results(_scanner)));
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}
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/// scan for symbols in provided image.
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/// see zbar_scan_image()
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int scan (Image& image)
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{
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return(zbar_scan_image(_scanner, image));
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}
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/// scan for symbols in provided image.
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/// see zbar_scan_image()
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ImageScanner& operator<< (Image& image)
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{
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scan(image);
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return(*this);
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}
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private:
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zbar_image_scanner_t *_scanner;
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};
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}
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#endif
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