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ios demo version

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This commit is contained in:
Semyon Babushkin
2017-10-19 14:46:44 +03:00
parent 1b98b320d2
commit 1e9ddbf3a9
145 changed files with 18395 additions and 208 deletions
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329
ios/ZBarSDK/Headers/zbar/Image.h Normal file
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//------------------------------------------------------------------------
// Copyright 2007-2010 (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);
if(image)
((Handler*)userdata)->image_callback(*image);
else {
Image tmp(zimg, 1);
((Handler*)userdata)->image_callback(tmp);
}
}
}
};
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 ()
{
if(zbar_image_get_userdata(_img) == this)
zbar_image_set_userdata(_img, NULL);
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)
{
unsigned long fourcc = zbar_fourcc_parse(format.c_str());
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));
}
/// retrieve both dimensions of the image.
/// see zbar_image_get_size()
/// @since 0.11
void get_size (unsigned &width,
unsigned &height) const
{
zbar_image_get_size(_img, &width, &height);
}
/// 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);
}
/// retrieve the scan crop rectangle.
/// see zbar_image_get_crop()
void get_crop (unsigned &x,
unsigned &y,
unsigned &width,
unsigned &height) const
{
zbar_image_get_crop(_img, &x, &y, &width, &height);
}
/// set the scan crop rectangle.
/// see zbar_image_set_crop()
void set_crop (unsigned x,
unsigned y,
unsigned width,
unsigned height)
{
zbar_image_set_crop(_img, x, y, 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.
/// see zbar_image_convert()
/// @since 0.11
Image convert (std::string format) const
{
unsigned long fourcc = zbar_fourcc_parse(format.c_str());
return(convert(fourcc));
}
/// 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);
}
private:
zbar_image_t *_img;
};
}
#endif