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

ios/ZBarSDK/zbar/Video.h

@@ -0,0 +1,170 @@
+//------------------------------------------------------------------------
+//  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_VIDEO_H_
+#define _ZBAR_VIDEO_H_
+
+/// @file
+/// Video Input C++ wrapper
+
+#ifndef _ZBAR_H_
+# error "include zbar.h in your application, **not** zbar/Video.h"
+#endif
+
+#include "Image.h"
+
+namespace zbar {
+
+/// mid-level video source abstraction.
+/// captures images from a video device
+
+class Video {
+public:
+    /// constructor.
+    Video (zbar_video_t *video = NULL)
+    {
+        if(video)
+            _video = video;
+        else
+            _video = zbar_video_create();
+    }
+
+    /// constructor.
+    Video (std::string& device)
+    {
+        _video = zbar_video_create();
+        open(device);
+    }
+
+    ~Video ()
+    {
+        zbar_video_destroy(_video);
+    }
+
+    /// cast to C video object.
+    operator zbar_video_t* () const
+    {
+        return(_video);
+    }
+
+    /// open and probe a video device.
+    void open (std::string& device)
+    {
+        if(zbar_video_open(_video, device.c_str()))
+            throw_exception(_video);
+    }
+
+    /// close video device if open.
+    void close ()
+    {
+        if(zbar_video_open(_video, NULL))
+            throw_exception(_video);
+    }
+
+    /// initialize video using a specific format for debug.
+    /// see zbar_video_init()
+    void init (unsigned long fourcc)
+    {
+        if(zbar_video_init(_video, fourcc))
+            throw_exception(_video);
+    }
+
+    /// initialize video using a specific format for debug.
+    /// see zbar_video_init()
+    void init (std::string& format)
+    {
+        unsigned int fourcc = zbar_fourcc_parse(format.c_str());
+        if(zbar_video_init(_video, fourcc))
+            throw_exception(_video);
+    }
+
+    /// retrieve file descriptor associated with open *nix video device.
+    /// see zbar_video_get_fd()
+    int get_fd ()
+    {
+        return(zbar_video_get_fd(_video));
+    }
+
+    /// retrieve current output image width.
+    /// see zbar_video_get_width()
+    int get_width ()
+    {
+        return(zbar_video_get_width(_video));
+    }
+
+    /// retrieve current output image height.
+    /// see zbar_video_get_height()
+    int get_height ()
+    {
+        return(zbar_video_get_height(_video));
+    }
+
+    /// start/stop video capture.
+    /// see zbar_video_enable()
+    void enable (bool enable = true)
+    {
+        if(zbar_video_enable(_video, enable))
+            throw_exception(_video);
+    }
+
+    /// retrieve next captured image.
+    /// see zbar_video_next_image()
+    Image next_image ()
+    {
+        zbar_image_t *img = zbar_video_next_image(_video);
+        if(!img)
+            throw_exception(_video);
+        return(Image(img));
+    }
+
+    /// request a preferred size for the video image from the device.
+    /// see zbar_video_request_size()
+    /// @since 0.6
+    void request_size (int width, int height)
+    {
+        zbar_video_request_size(_video, width, height);
+    }
+
+    /// request a preferred driver interface version for debug/testing.
+    /// see zbar_video_request_interface()
+    /// @since 0.6
+    void request_interface (int version)
+    {
+        zbar_video_request_interface(_video, version);
+    }
+
+    /// request a preferred I/O mode for debug/testing.
+    /// see zbar_video_request_iomode()
+    /// @since 0.7
+    void request_iomode (int iomode)
+    {
+        if(zbar_video_request_iomode(_video, iomode))
+            throw_exception(_video);
+    }
+
+private:
+    zbar_video_t *_video;
+};
+
+}
+
+#endif