mirror of http://192.168.1.51:8099/lmh188/twain3
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
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//------------------------------------------------------------------------
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// Copyright 2008-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
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//
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// This file is part of the ZBar Bar Code Reader.
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//
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// The ZBar Bar Code Reader is free software; you can redistribute it
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// and/or modify it under the terms of the GNU Lesser Public License as
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// published by the Free Software Foundation; either version 2.1 of
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// the License, or (at your option) any later version.
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//
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// The ZBar Bar Code Reader is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser Public License for more details.
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//
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// You should have received a copy of the GNU Lesser Public License
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// along with the ZBar Bar Code Reader; if not, write to the Free
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// Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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// Boston, MA 02110-1301 USA
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//
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// http://sourceforge.net/projects/zbar
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//------------------------------------------------------------------------
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#ifndef _QZBARIMAGE_H_
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#define _QZBARIMAGE_H_
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/// @file
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/// QImage to Image type conversion wrapper
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#include <qimage.h>
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#include <zbar.h>
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namespace zbar {
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/// wrap a QImage and convert into a format suitable for scanning.
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class QZBarImage
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: public Image
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{
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public:
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/// construct a zbar library image based on an existing QImage.
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QZBarImage (const QImage &qimg)
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: qimg(qimg)
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{
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QImage::Format fmt = qimg.format();
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if(fmt != QImage::Format_RGB32 &&
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fmt != QImage::Format_ARGB32 &&
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fmt != QImage::Format_ARGB32_Premultiplied)
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throw FormatError();
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unsigned bpl = qimg.bytesPerLine();
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unsigned width = bpl / 4;
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unsigned height = qimg.height();
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set_size(width, height);
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set_format(zbar_fourcc('B','G','R','4'));
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unsigned long datalen = qimg.numBytes();
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set_data(qimg.bits(), datalen);
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if((width * 4 != bpl) ||
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(width * height * 4 > datalen))
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throw FormatError();
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}
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private:
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QImage qimg;
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};
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};
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#endif
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