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

ios/ZBarSDK/zbar/Processor.h

@@ -0,0 +1,223 @@
+//------------------------------------------------------------------------
+//  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_PROCESSOR_H_
+#define _ZBAR_PROCESSOR_H_
+
+/// @file
+/// Processor C++ wrapper
+
+#ifndef _ZBAR_H_
+# error "include zbar.h in your application, **not** zbar/Processor.h"
+#endif
+
+#include "Exception.h"
+#include "Image.h"
+
+namespace zbar {
+
+/// high-level self-contained image processor.
+/// processes video and images for barcodes, optionally displaying
+/// images to a library owned output window
+
+class Processor {
+ public:
+    /// value to pass for no timeout.
+    static const int FOREVER = -1;
+
+    /// constructor.
+    Processor (bool threaded = true,
+               const char *video_device = "",
+               bool enable_display = true)
+    {
+        _processor = zbar_processor_create(threaded);
+        if(!_processor)
+            throw std::bad_alloc();
+        init(video_device, enable_display);
+    }
+
+    ~Processor ()
+    {
+        zbar_processor_destroy(_processor);
+    }
+
+    /// cast to C processor object.
+    operator zbar_processor_t* ()
+    {
+        return(_processor);
+    }
+
+    /// opens a video input device and/or prepares to display output.
+    /// see zbar_processor_init()
+    void init (const char *video_device = "",
+               bool enable_display = true)
+    {
+        if(zbar_processor_init(_processor, video_device, enable_display))
+            throw_exception(_processor);
+    }
+
+    /// setup result handler callback.
+    /// see zbar_processor_set_data_handler()
+    void set_handler (Image::Handler& handler)
+    {
+        zbar_processor_set_data_handler(_processor, handler, &handler);
+    }
+
+    /// set config for indicated symbology (0 for all) to specified value.
+    /// @see zbar_processor_set_config()
+    /// @since 0.4
+    int set_config (zbar_symbol_type_t symbology,
+                    zbar_config_t config,
+                    int value)
+    {
+        return(zbar_processor_set_config(_processor, symbology,
+                                          config, value));
+    }
+
+    /// set config parsed from configuration string.
+    /// @see zbar_processor_parse_config()
+    /// @since 0.4
+    int set_config (std::string cfgstr)
+    {
+        return(zbar_processor_parse_config(_processor, cfgstr.c_str()));
+    }
+
+    /// retrieve the current state of the ouput window.
+    /// see zbar_processor_is_visible()
+    bool is_visible ()
+    {
+        int rc = zbar_processor_is_visible(_processor);
+        if(rc < 0)
+            throw_exception(_processor);
+        return(rc != 0);
+    }
+
+    /// show or hide the display window owned by the library.
+    /// see zbar_processor_set_visible()
+    void set_visible (bool visible = true)
+    {
+        if(zbar_processor_set_visible(_processor, visible) < 0)
+            throw_exception(_processor);
+    }
+
+    /// control the processor in free running video mode.
+    /// see zbar_processor_set_active()
+    void set_active (bool active = true)
+    {
+        if(zbar_processor_set_active(_processor, active) < 0)
+            throw_exception(_processor);
+    }
+
+    /// retrieve decode results for last scanned image.
+    /// @see zbar_processor_get_results()
+    /// @since 0.10
+    const SymbolSet get_results () const {
+        return(SymbolSet(zbar_processor_get_results(_processor)));
+    }
+
+    /// wait for input to the display window from the user.
+    /// see zbar_processor_user_wait()
+    int user_wait (int timeout = FOREVER)
+    {
+        int rc = zbar_processor_user_wait(_processor, timeout);
+        if(rc < 0)
+            throw_exception(_processor);
+        return(rc);
+    }
+
+    /// process from the video stream until a result is available.
+    /// see zbar_process_one()
+    void process_one (int timeout = FOREVER)
+    {
+        if(zbar_process_one(_processor, timeout) < 0)
+            throw_exception(_processor);
+    }
+
+    /// process the provided image for barcodes.
+    /// see zbar_process_image()
+    void process_image (Image& image)
+    {
+        if(zbar_process_image(_processor, image) < 0)
+            throw_exception(_processor);
+    }
+
+    /// process the provided image for barcodes.
+    /// see zbar_process_image()
+    Processor& operator<< (Image& image)
+    {
+        process_image(image);
+        return(*this);
+    }
+
+    /// force specific input and output formats for debug/testing.
+    /// see zbar_processor_force_format()
+    void force_format (unsigned long input_format,
+                       unsigned long output_format)
+    {
+        if(zbar_processor_force_format(_processor, input_format,
+                                        output_format))
+            throw_exception(_processor);
+    }
+
+    /// force specific input and output formats for debug/testing.
+    /// see zbar_processor_force_format()
+    void force_format (std::string& input_format,
+                       std::string& output_format)
+    {
+        unsigned long ifourcc = zbar_fourcc_parse(input_format.c_str());
+        unsigned long ofourcc = zbar_fourcc_parse(output_format.c_str());
+        if(zbar_processor_force_format(_processor, ifourcc, ofourcc))
+            throw_exception(_processor);
+    }
+
+    /// request a preferred size for the video image from the device.
+    /// see zbar_processor_request_size()
+    /// @since 0.6
+    void request_size (int width, int height)
+    {
+        zbar_processor_request_size(_processor, width, height);
+    }
+
+    /// request a preferred driver interface version for debug/testing.
+    /// see zbar_processor_request_interface()
+    /// @since 0.6
+    void request_interface (int version)
+    {
+        zbar_processor_request_interface(_processor, version);
+    }
+
+    /// request a preferred I/O mode for debug/testing.
+    /// see zbar_processor_request_iomode()
+    /// @since 0.7
+    void request_iomode (int iomode)
+    {
+        if(zbar_processor_request_iomode(_processor, iomode))
+            throw_exception(_processor);
+    }
+
+ private:
+    zbar_processor_t *_processor;
+};
+
+}
+
+#endif