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Diffstat (limited to 'kviewshell/plugins/djvu/libdjvu/DjVuInfo.h')
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1 files changed, 193 insertions, 0 deletions
diff --git a/kviewshell/plugins/djvu/libdjvu/DjVuInfo.h b/kviewshell/plugins/djvu/libdjvu/DjVuInfo.h new file mode 100644 index 00000000..67a83be9 --- /dev/null +++ b/kviewshell/plugins/djvu/libdjvu/DjVuInfo.h @@ -0,0 +1,193 @@ +//C- -*- C++ -*- +//C- ------------------------------------------------------------------- +//C- DjVuLibre-3.5 +//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun. +//C- Copyright (c) 2001 AT&T +//C- +//C- This software is subject to, and may be distributed under, the +//C- GNU General Public License, Version 2. The license should have +//C- accompanied the software or you may obtain a copy of the license +//C- from the Free Software Foundation at http://www.fsf.org . +//C- +//C- This program is distributed in the hope that it will be useful, +//C- but WITHOUT ANY WARRANTY; without even the implied warranty of +//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +//C- GNU General Public License for more details. +//C- +//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library +//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech +//C- Software authorized us to replace the original DjVu(r) Reference +//C- Library notice by the following text (see doc/lizard2002.djvu): +//C- +//C- ------------------------------------------------------------------ +//C- | DjVu (r) Reference Library (v. 3.5) +//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved. +//C- | The DjVu Reference Library is protected by U.S. Pat. No. +//C- | 6,058,214 and patents pending. +//C- | +//C- | This software is subject to, and may be distributed under, the +//C- | GNU General Public License, Version 2. The license should have +//C- | accompanied the software or you may obtain a copy of the license +//C- | from the Free Software Foundation at http://www.fsf.org . +//C- | +//C- | The computer code originally released by LizardTech under this +//C- | license and unmodified by other parties is deemed "the LIZARDTECH +//C- | ORIGINAL CODE." Subject to any third party intellectual property +//C- | claims, LizardTech grants recipient a worldwide, royalty-free, +//C- | non-exclusive license to make, use, sell, or otherwise dispose of +//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the +//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU +//C- | General Public License. This grant only confers the right to +//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to +//C- | the extent such infringement is reasonably necessary to enable +//C- | recipient to make, have made, practice, sell, or otherwise dispose +//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to +//C- | any greater extent that may be necessary to utilize further +//C- | modifications or combinations. +//C- | +//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY +//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED +//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF +//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. +//C- +------------------------------------------------------------------ +// +// $Id: DjVuInfo.h,v 1.12 2003/11/07 22:08:21 leonb Exp $ +// $Name: release_3_5_15 $ + +#ifndef _DJVUINFO_H +#define _DJVUINFO_H +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#if NEED_GNUG_PRAGMAS +# pragma interface +#endif + + +/** @name DjVuInfo.h + Each instance of class #DjVuInfo# represents the information + contained in the information chunk of a DjVu file. This #"INFO"# + chunk is always the first chunk of a DjVu file. + @memo + DjVu information chunk. + @author + L\'eon Bottou <[email protected]> + @version + #$Id: DjVuInfo.h,v 1.12 2003/11/07 22:08:21 leonb Exp $# */ +//@{ + + + +#include "GSmartPointer.h" +#include "GRect.h" + +#ifdef HAVE_NAMESPACES +namespace DJVU { +# ifdef NOT_DEFINED // Just to fool emacs c++ mode +} +#endif +#endif + +class ByteStream; + +/** @name DjVu version constants + @memo DjVu file format version. */ +//@{ +/** Current DjVu format version. The value of this macro represents the + version of the DjVu file format implemented by this release of the DjVu + Reference Library. */ +#define DJVUVERSION 25 +/** DjVu format version. This is the value used in files produced + with DjVuLibre. This is smaller than DJVUVERSION because version + number inflation causes problems with older software. + */ +#define DJVUVERSION_FOR_OUTPUT 24 +/** This is the version which introduced orientations. */ +#define DJVUVERSION_ORIENTATION 22 +/** Oldest DjVu format version supported by this library. This release of the + library cannot completely decode DjVu files whose version field is less + than or equal to this number. */ +#define DJVUVERSION_TOO_OLD 15 +/** Newest DjVu format partially supported by this library. This release of + the library will attempt to decode files whose version field is smaller + than this macro. If the version field is greater than or equal to this + number, the decoder will just throw a \Ref{GException}. */ +#define DJVUVERSION_TOO_NEW 50 +//@} + + +class GUTF8String; + +/** Information component. + Each instance of class #DjVuInfo# represents the information + contained in the information chunk of a DjVu file. This #"INFO"# + chunk is always the first chunk of a DjVu file. + */ + +class DjVuInfo : public GPEnabled +{ +protected: + DjVuInfo(void); +public: + /** Creates an empty DjVuInfo object. + The #width# and #height# fields are set to zero. + All other fields are initialized with suitable default values. */ + static GP<DjVuInfo> create(void) {return new DjVuInfo();} + + /** Decodes the DjVu #"INFO"# chunk. This function reads binary data from + ByteStream #bs# and populates the fields of this DjVuInfo object. It is + normally called after detecting an #"INFO"# chunk header with function + \Ref{IFFByteStream::get_chunk}. */ + void decode(ByteStream &bs); + /** Encodes the DjVu #"INFO"# chunk. This function writes the fields of this + DjVuInfo object into ByteStream #bs#. It is normally called after + creating an #"INFO"# chunk header with function + \Ref{IFFByteStream::put_chunk}. */ + void encode(ByteStream &bs); + /** Returns the number of bytes used by this object. */ + unsigned int get_memory_usage() const; + /** Width of the DjVu image (in pixels). */ + int width; + /** Height of the DjVu image (in pixels). */ + int height; + /** DjVu file version number. This number characterizes the file format + version used by the encoder to generate this DjVu image. A decoder + should compare this version number with the constants described in + section "\Ref{DjVu version constants}". */ + int version; + /** Resolution of the DjVu image. The resolution is given in ``pixels per + 2.54 centimeters'' (this unit is sometimes called ``pixels per + inch''). Display programs can use this information to determine the + natural magnification to use for rendering a DjVu image. */ + int dpi; + /** Gamma coefficient of the display for which the image was designed. The + rendering functions can use this information in order to perform color + correction for the intended display device. */ + double gamma; + /** The following boolian values are stored in the last character of the + info structure. Unused bits are reserved for possible future extensions + and backwards compatability. */ + bool compressable; + enum {COMPRESSABLE_FLAG=0x80,RESERVED_FLAGS1=0x7f}; + + /** We also store the current image orientation as three bits. */ + GRect::Orientations orientation; + + /// Obtain the flags for the default specifications. + GUTF8String get_paramtags(void) const; + /// Obtain the flags for the default specifications. + void writeParam(ByteStream &out_str) const; +}; + + +//@} + +// ----- THE END + +#ifdef HAVE_NAMESPACES +} +# ifndef NOT_USING_DJVU_NAMESPACE +using namespace DJVU; +# endif +#endif +#endif |