source: trunk/libdjvu/JPEGDecoder.h @ 76

Last change on this file since 76 was 17, checked in by Eugene Romanenko, 16 years ago

update makefiles, remove absolute paths, update djvulibre to version 3.5.17

File size: 4.8 KB
Line 
1//C-  -*- C++ -*-
2//C- -------------------------------------------------------------------
3//C- DjVuLibre-3.5
4//C- Copyright (c) 2002  Leon Bottou and Yann Le Cun.
5//C- Copyright (c) 2001  AT&T
6//C-
7//C- This software is subject to, and may be distributed under, the
8//C- GNU General Public License, Version 2. The license should have
9//C- accompanied the software or you may obtain a copy of the license
10//C- from the Free Software Foundation at http://www.fsf.org .
11//C-
12//C- This program is distributed in the hope that it will be useful,
13//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
14//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15//C- GNU General Public License for more details.
16//C-
17//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
18//C- distributed by Lizardtech Software.  On July 19th 2002, Lizardtech
19//C- Software authorized us to replace the original DjVu(r) Reference
20//C- Library notice by the following text (see doc/lizard2002.djvu):
21//C-
22//C-  ------------------------------------------------------------------
23//C- | DjVu (r) Reference Library (v. 3.5)
24//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
25//C- | The DjVu Reference Library is protected by U.S. Pat. No.
26//C- | 6,058,214 and patents pending.
27//C- |
28//C- | This software is subject to, and may be distributed under, the
29//C- | GNU General Public License, Version 2. The license should have
30//C- | accompanied the software or you may obtain a copy of the license
31//C- | from the Free Software Foundation at http://www.fsf.org .
32//C- |
33//C- | The computer code originally released by LizardTech under this
34//C- | license and unmodified by other parties is deemed "the LIZARDTECH
35//C- | ORIGINAL CODE."  Subject to any third party intellectual property
36//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
37//C- | non-exclusive license to make, use, sell, or otherwise dispose of
38//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
39//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
40//C- | General Public License.   This grant only confers the right to
41//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
42//C- | the extent such infringement is reasonably necessary to enable
43//C- | recipient to make, have made, practice, sell, or otherwise dispose
44//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
45//C- | any greater extent that may be necessary to utilize further
46//C- | modifications or combinations.
47//C- |
48//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
49//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
50//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
51//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
52//C- +------------------------------------------------------------------
53//
54// $Id: JPEGDecoder.h,v 1.8 2003/11/07 22:08:22 leonb Exp $
55// $Name:  $
56
57#ifndef _JPEGDECODER_H_
58#define _JPEGDECODER_H_
59#ifdef HAVE_CONFIG_H
60#include "config.h"
61#endif
62#if NEED_GNUG_PRAGMAS
63# pragma interface
64#endif
65
66#ifdef NEED_JPEG_DECODER
67
68#include <string.h>
69#include <setjmp.h>
70
71#include "GSmartPointer.h"
72
73#ifdef HAVE_NAMESPACES
74namespace DJVU {
75# ifdef NOT_DEFINED // Just to fool emacs c++ mode
76}
77#endif
78#endif
79
80class ByteStream;
81class GPixmap;
82
83
84/** @name JPEGDecoder.h
85    Files #"JPEGDecoder.h"# and #"JPEGDecoder.cpp"# implement an
86    interface to the decoding subset of the IJG JPEG library.
87    @memo
88    Decoding interface to the IJG JPEG library.
89    @version
90    #$Id: JPEGDecoder.h,v 1.8 2003/11/07 22:08:22 leonb Exp $#
91    @author
92    Parag Deshmukh <parag@sanskrit.lz.att.com>
93*/
94//@{
95
96class GUTF8String;
97
98/** This class ensures namespace isolation. */
99class JPEGDecoder
100{
101public:
102  class Impl;
103
104  /** Decodes the JPEG formated ByteStream */ 
105  static GP<GPixmap> decode(ByteStream & bs);
106  static void decode(ByteStream & bs,GPixmap &pix);
107#ifdef LIBJPEGNAME
108  static void *jpeg_lookup(const GUTF8String &name);
109  static jpeg_error_mgr *jpeg_std_error(jpeg_error_mgr *x);
110  static void jpeg_CreateDecompress(jpeg_decompress_struct *x,int v, size_t s);
111  static void jpeg_destroy_decompress(j_decompress_ptr x);
112  static int jpeg_read_header(j_decompress_ptr x,boolean y);
113  static JDIMENSION jpeg_read_scanlines(j_decompress_ptr x,JSAMPARRAY y,JDIMENSION z);
114  static boolean jpeg_finish_decompress(j_decompress_ptr x);
115  static boolean jpeg_resync_to_restart(jpeg_decompress_struct *x,int d);
116  static boolean jpeg_start_decompress(j_decompress_ptr x);
117#endif // LIBJPEGNAME
118};
119
120
121//@}
122
123
124#ifdef HAVE_NAMESPACES
125}
126# ifndef NOT_USING_DJVU_NAMESPACE
127using namespace DJVU;
128# endif
129#endif
130
131#endif // NEED_JPEG_DECODER
132#endif // _JPEGDECODER_H_
133
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