//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, either Version 2 of the license,

//C- or (at your option) any later version. 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 from

//C- Lizardtech Software.  Lizardtech Software has authorized us to

//C- replace the original DjVu(r) Reference Library notice by the following

//C- text (see doc/lizard2002.djvu and doc/lizardtech2007.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, either Version 2 of the license,

//C- | or (at your option) any later version. 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- +------------------------------------------------------------------

#ifndef _JPEGDECODER_H_

#define _JPEGDECODER_H_

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#if NEED_GNUG_PRAGMAS

# pragma interface

#endif

#ifdef NEED_JPEG_DECODER

#include <stddef.h>

#include <string.h>

#include <setjmp.h>

#include "GSmartPointer.h"

#ifdef HAVE_NAMESPACES

namespace DJVU {

# ifdef NOT_DEFINED // Just to fool emacs c++ mode

}

#endif

#endif

class ByteStream;

class GPixmap;

/** @name JPEGDecoder.h

    Files #"JPEGDecoder.h"# and #"JPEGDecoder.cpp"# implement an

    interface to the decoding subset of the IJG JPEG library.

    @memo

    Decoding interface to the IJG JPEG library.

    @author

    Parag Deshmukh <parag@sanskrit.lz.att.com> 

*/

//@{

class GUTF8String;

/** This class ensures namespace isolation. */

class JPEGDecoder

{

public:

  class Impl;

  /** Decodes the JPEG formated ByteStream */ 

  static GP<GPixmap> decode(ByteStream & bs);

  static void decode(ByteStream & bs,GPixmap &pix;;

#ifdef LIBJPEGNAME

  static void *jpeg_lookup(const GUTF8String &name);

  static jpeg_error_mgr *jpeg_std_error(jpeg_error_mgr *x);

  static void jpeg_CreateDecompress(jpeg_decompress_struct *x,int v, size_t s);

  static void jpeg_destroy_decompress(j_decompress_ptr x);

  static int jpeg_read_header(j_decompress_ptr x,boolean y);

  static JDIMENSION jpeg_read_scanlines(j_decompress_ptr x,JSAMPARRAY y,JDIMENSION z);

  static boolean jpeg_finish_decompress(j_decompress_ptr x);

  static boolean jpeg_resync_to_restart(jpeg_decompress_struct *x,int d);

  static boolean jpeg_start_decompress(j_decompress_ptr x);

#endif // LIBJPEGNAME

};

//@}

#ifdef HAVE_NAMESPACES

}

# ifndef NOT_USING_DJVU_NAMESPACE

using namespace DJVU;

# endif

#endif

#endif // NEED_JPEG_DECODER

#endif // _JPEGDECODER_H_