Added iOS implementation (tested on iOS7, iPhone 4S...)

ios/ZBarSDK/zbar/Scanner.h

@@ -0,0 +1,162 @@
+//------------------------------------------------------------------------
+//  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_SCANNER_H_
+#define _ZBAR_SCANNER_H_
+
+/// @file
+/// Scanner C++ wrapper
+
+#ifndef _ZBAR_H_
+# error "include zbar.h in your application, **not** zbar/Scanner.h"
+#endif
+
+#include <stdio.h>
+
+namespace zbar {
+
+/// low-level linear intensity sample stream scanner interface.
+/// identifies "bar" edges and measures width between them.
+/// optionally passes to bar width Decoder
+
+class Scanner {
+ public:
+
+    /// constructor.
+    /// @param decoder reference to a Decoder instance which will
+    /// be passed scan results automatically
+    Scanner (Decoder& decoder)
+    {
+        _scanner = zbar_scanner_create(decoder._decoder);
+    }
+
+    /// constructor.
+    /// @param decoder pointer to a Decoder instance which will
+    /// be passed scan results automatically
+    Scanner (Decoder* decoder = NULL)
+    {
+        zbar_decoder_t *zdcode = NULL;
+        if(decoder)
+            zdcode = decoder->_decoder;
+        _scanner = zbar_scanner_create(zdcode);
+    }
+
+    ~Scanner ()
+    {
+        zbar_scanner_destroy(_scanner);
+    }
+
+    /// clear all scanner state.
+    /// see zbar_scanner_reset()
+    void reset ()
+    {
+        zbar_scanner_reset(_scanner);
+    }
+
+    /// mark start of a new scan pass.
+    /// see zbar_scanner_new_scan()
+    zbar_symbol_type_t new_scan ()
+    {
+        _type = zbar_scanner_new_scan(_scanner);
+        return(_type);
+    }
+
+    /// flush scanner pipeline.
+    /// see zbar_scanner_flush()
+    zbar_symbol_type_t flush ()
+    {
+        _type = zbar_scanner_flush(_scanner);
+        return(_type);
+    }
+
+    /// process next sample intensity value.
+    /// see zbar_scan_y()
+    zbar_symbol_type_t scan_y (int y)
+    {
+        _type = zbar_scan_y(_scanner, y);
+        return(_type);
+    }
+
+    /// process next sample intensity value.
+    /// see zbar_scan_y()
+    Scanner& operator<< (int y)
+    {
+        _type = zbar_scan_y(_scanner, y);
+        return(*this);
+    }
+
+    /// process next sample from RGB (or BGR) triple.
+    /// see zbar_scan_rgb24()
+    zbar_symbol_type_t scan_rgb24 (unsigned char *rgb)
+    {
+        _type = zbar_scan_rgb24(_scanner, rgb);
+        return(_type);
+    }
+
+    /// process next sample from RGB (or BGR) triple.
+    /// see zbar_scan_rgb24()
+    Scanner& operator<< (unsigned char *rgb)
+    {
+        _type = zbar_scan_rgb24(_scanner, rgb);
+        return(*this);
+    }
+
+    /// retrieve last scanned width.
+    /// see zbar_scanner_get_width()
+    unsigned get_width () const
+    {
+        return(zbar_scanner_get_width(_scanner));
+    }
+
+    /// retrieve last scanned color.
+    /// see zbar_scanner_get_color()
+    zbar_color_t get_color () const
+    {
+        return(zbar_scanner_get_color(_scanner));
+    }
+
+    /// retrieve last scan result.
+    zbar_symbol_type_t get_type () const
+    {
+        return(_type);
+    }
+
+    /// cast to C scanner
+    operator zbar_scanner_t* () const
+    {
+        return(_scanner);
+    }
+
+    /// retrieve C scanner
+    const zbar_scanner_t *get_c_scanner () const
+    {
+        return(_scanner);
+    }
+
+ private:
+    zbar_scanner_t *_scanner;
+    zbar_symbol_type_t _type;
+};
+
+}
+
+#endif