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| author | Roy Ben Shabat <Roy.mail.net@gmail.com> | 2019-04-08 00:44:51 +0300 |
|---|---|---|
| committer | Roy Ben Shabat <Roy.mail.net@gmail.com> | 2019-04-08 00:44:51 +0300 |
| commit | 08dd6000fe3a218221003876a699f448835b62e4 (patch) | |
| tree | 6ef67384b80cd8176a4a2de8d09fae103a092357 /Software/External_Repositories/ZBar/include/zbar/Image.h | |
| parent | 3254beb8358745efc6988df3d52a24fcb858fcdd (diff) | |
| download | Tango-08dd6000fe3a218221003876a699f448835b62e4.tar.gz Tango-08dd6000fe3a218221003876a699f448835b62e4.zip | |
Working on TCC...
Diffstat (limited to 'Software/External_Repositories/ZBar/include/zbar/Image.h')
| -rw-r--r-- | Software/External_Repositories/ZBar/include/zbar/Image.h | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/Software/External_Repositories/ZBar/include/zbar/Image.h b/Software/External_Repositories/ZBar/include/zbar/Image.h new file mode 100644 index 000000000..e1d964404 --- /dev/null +++ b/Software/External_Repositories/ZBar/include/zbar/Image.h @@ -0,0 +1,290 @@ +//------------------------------------------------------------------------ +// Copyright 2007-2009 (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 +//------------------------------------------------------------------------ +#ifndef _ZBAR_IMAGE_H_ +#define _ZBAR_IMAGE_H_ + +/// @file +/// Image C++ wrapper + +#ifndef _ZBAR_H_ +# error "include zbar.h in your application, **not** zbar/Image.h" +#endif + +#include <assert.h> +#include <iterator> +#include "Symbol.h" +#include "Exception.h" + +namespace zbar { + +class Video; + +/// stores image data samples along with associated format and size +/// metadata + +class Image { +public: + + /// general Image result handler. + /// applications should subtype this and pass an instance to + /// eg. ImageScanner::set_handler() to implement result processing + class Handler { + public: + virtual ~Handler() { } + + /// invoked by library when Image should be processed + virtual void image_callback(Image &image) = 0; + + /// cast this handler to the C handler + operator zbar_image_data_handler_t* () const + { + return(_cb); + } + + private: + static void _cb (zbar_image_t *zimg, + const void *userdata) + { + if(userdata) { + Image *image = (Image*)zbar_image_get_userdata(zimg); + ((Handler*)userdata)->image_callback(*image); + } + } + }; + + class SymbolIterator : public zbar::SymbolIterator { + public: + /// default constructor. + SymbolIterator () + : zbar::SymbolIterator() + { } + + /// constructor. + SymbolIterator (const SymbolSet &syms) + : zbar::SymbolIterator(syms) + { } + + /// copy constructor. + SymbolIterator (const SymbolIterator& iter) + : zbar::SymbolIterator(iter) + { } + }; + + /// constructor. + /// create a new Image with the specified parameters + Image (unsigned width = 0, + unsigned height = 0, + const std::string& format = "", + const void *data = NULL, + unsigned long length = 0) + : _img(zbar_image_create()) + { + zbar_image_set_userdata(_img, this); + if(width && height) + set_size(width, height); + if(format.length()) + set_format(format); + if(data && length) + set_data(data, length); + } + + ~Image () + { + zbar_image_ref(_img, -1); + } + + /// cast to C image object + operator const zbar_image_t* () const + { + return(_img); + } + + /// cast to C image object + operator zbar_image_t* () + { + return(_img); + } + + /// retrieve the image format. + /// see zbar_image_get_format() + unsigned long get_format () const + { + return(zbar_image_get_format(_img)); + } + + /// specify the fourcc image format code for image sample data. + /// see zbar_image_set_format() + void set_format (unsigned long format) + { + zbar_image_set_format(_img, format); + } + + /// specify the fourcc image format code for image sample data. + /// see zbar_image_set_format() + void set_format (const std::string& format) + { + if(format.length() != 4) + throw FormatError(); + unsigned long fourcc = ((format[0] & 0xff) | + ((format[1] & 0xff) << 8) | + ((format[2] & 0xff) << 16) | + ((format[3] & 0xff) << 24)); + zbar_image_set_format(_img, fourcc); + } + + /// retrieve a "sequence" (page/frame) number associated with this + /// image. + /// see zbar_image_get_sequence() + /// @since 0.6 + unsigned get_sequence () const + { + return(zbar_image_get_sequence(_img)); + } + + /// associate a "sequence" (page/frame) number with this image. + /// see zbar_image_set_sequence() + /// @since 0.6 + void set_sequence (unsigned sequence_num) + { + zbar_image_set_sequence(_img, sequence_num); + } + + /// retrieve the width of the image. + /// see zbar_image_get_width() + unsigned get_width () const + { + return(zbar_image_get_width(_img)); + } + + /// retrieve the height of the image. + /// see zbar_image_get_height() + unsigned get_height () const + { + return(zbar_image_get_height(_img)); + } + + /// specify the pixel size of the image. + /// see zbar_image_set_size() + void set_size (unsigned width, + unsigned height) + { + zbar_image_set_size(_img, width, height); + } + + /// return the image sample data. + /// see zbar_image_get_data() + const void *get_data () const + { + return(zbar_image_get_data(_img)); + } + + /// return the size of the image sample data. + /// see zbar_image_get_data_length() + /// @since 0.6 + unsigned long get_data_length () const + { + return(zbar_image_get_data_length(_img)); + } + + /// specify image sample data. + /// see zbar_image_set_data() + void set_data (const void *data, + unsigned long length) + { + zbar_image_set_data(_img, data, length, _cleanup); + } + + /// image format conversion. + /// see zbar_image_convert() + Image convert (unsigned long format) const + { + zbar_image_t *img = zbar_image_convert(_img, format); + if(img) + return(Image(img)); + throw FormatError(); + } + + /// image format conversion with crop/pad. + /// see zbar_image_convert_resize() + /// @since 0.4 + Image convert (unsigned long format, + unsigned width, + unsigned height) const + { + zbar_image_t *img = + zbar_image_convert_resize(_img, format, width, height); + if(img) + return(Image(img)); + throw FormatError(); + } + + const SymbolSet get_symbols () const { + return(SymbolSet(zbar_image_get_symbols(_img))); + } + + void set_symbols (const SymbolSet &syms) { + zbar_image_set_symbols(_img, syms); + } + + /// create a new SymbolIterator over decoded results. + SymbolIterator symbol_begin () const { + return(SymbolIterator(get_symbols())); + } + + /// return a SymbolIterator suitable for ending iteration. + SymbolIterator symbol_end () const { + return(SymbolIterator()); + } + +protected: + + friend class Video; + + /// constructor. + /// @internal + /// create a new Image from a zbar_image_t C object + Image (zbar_image_t *src, + int refs = 0) + : _img(src) + { + if(refs) + zbar_image_ref(_img, refs); + zbar_image_set_userdata(_img, this); + } + + /// default data cleanup (noop) + /// @internal + static void _cleanup (zbar_image_t *img) + { + // by default nothing is cleaned + assert(img); + assert(zbar_image_get_userdata(img)); + } + +private: + zbar_image_t *_img; +}; + +} + +#endif |
