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<h1>pljpegdec.h</h1><div class="fragment"><pre>00001 <span class="comment">/*</span>
00002 <span class="comment">/--------------------------------------------------------------------</span>
00003 <span class="comment">|</span>
00004 <span class="comment">| $Id: pljpegdec_8h-source.html,v 1.4 2004/09/15 15:26:29 uzadow Exp $</span>
00005 <span class="comment">|</span>
00006 <span class="comment">| Copyright (c) 1996-2002 Ulrich von Zadow</span>
00007 <span class="comment">|</span>
00008 <span class="comment">\--------------------------------------------------------------------</span>
00009 <span class="comment">*/</span>
00010
00011 <span class="preprocessor">#ifndef INCL_PLJPEGDEC</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLJPEGDEC</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#ifndef INCL_PLPICDEC</span>
00015 <span class="preprocessor"></span><span class="preprocessor">#include "plpicdec.h"</span>
00016 <span class="preprocessor">#endif</span>
00017 <span class="preprocessor"></span>
00018 <span class="preprocessor">#include <stdio.h></span>
00019
00020 <span class="keyword">extern</span> <span class="stringliteral">"C"</span>
00021 {
00022 <span class="preprocessor">#include "jpeglib.h"</span>
00023 }
00024
00025 <span class="keyword">class </span>PLExif;
00026 <span class="comment"></span>
00027 <span class="comment">//! JPEG file decoder. Uses the independent JPEG group's library</span>
00028 <span class="comment">//! to do the actual conversion.</span>
<a name="l00029"></a><a class="code" href="classPLJPEGDecoder.html">00029</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLJPEGDecoder.html">PLJPEGDecoder</a> : <span class="keyword">public</span> <a class="code" href="classPLPicDecoder.html">PLPicDecoder</a>
00030 {
00031
00032 <span class="keyword">public</span>:<span class="comment"></span>
00033 <span class="comment"> //! Creates a decoder</span>
00034 <span class="comment"></span> <a class="code" href="classPLJPEGDecoder.html">PLJPEGDecoder</a>
00035 ();
00036 <span class="comment"></span>
00037 <span class="comment"> //! Destroys a decoder</span>
00038 <span class="comment"></span> ~<a class="code" href="classPLJPEGDecoder.html">PLJPEGDecoder</a>
00039 ();
00040 <span class="comment"></span>
00041 <span class="comment"> //!</span>
00042 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Open (<a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc);
00043 <span class="comment"></span>
00044 <span class="comment"> //! Fills the bitmap with the image. </span>
00045 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGDecoder.html#a3">GetImage</a> (<a class="code" href="classPLBmpBase.html">PLBmpBase</a> & Bmp);
00046
00047 <span class="keywordtype">void</span> GetExifData(PLExif& ExifData);
00048
00049 <span class="keyword">virtual</span> <span class="keywordtype">void</span> Close();
00050 <span class="comment"></span>
00051 <span class="comment"> //! true (the default) selects fast but sloppy decoding.</span>
00052 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGDecoder.html#a6">SetFast</a>
00053 ( <span class="keywordtype">bool</span> bFast
00054 );
00055
00056 <span class="comment">// Jo Hagelberg 15.4.99</span>
00057 <span class="comment">// this must be static as it's passed to extern C</span><span class="comment"></span>
00058 <span class="comment"> //! callback for jpeglib's progress notification</span>
00059 <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGDecoder.html#e0">JNotification</a>
00060 (j_common_ptr cinfo
00061 );
00062
00063 <span class="keyword">private</span>:
00064 <span class="comment">// Assumes IJPEG decoder is already set up.</span>
00065 <span class="keywordtype">void</span> decodeGray
00066 ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp);
00067
00068 <span class="comment">// Assumes IJPEG decoder is already set up.</span>
00069 <span class="keywordtype">void</span> decodeRGB
00070 ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp);
00071
00072 jpeg_decompress_struct cinfo; <span class="comment">// IJPEG decoder state.</span>
00073 jpeg_error_mgr jerr; <span class="comment">// Custom error manager.</span>
00074
00075 <span class="keywordtype">bool</span> m_bFast; <span class="comment">// true selects fast but sloppy decoding.</span>
00076 PLExif * m_pExifData;
00077 };
00078
00079 <span class="preprocessor">#endif</span>
00080 <span class="preprocessor"></span><span class="comment">/*</span>
00081 <span class="comment">/--------------------------------------------------------------------</span>
00082 <span class="comment">|</span>
00083 <span class="comment">| $Log: pljpegdec_8h-source.html,v $
00083 <span class="comment">| Revision 1.4 2004/09/15 15:26:29 uzadow
00083 <span class="comment">| Linux compatibility changes, doc update.
00083 <span class="comment">|</span>
00084 <span class="comment">| Revision 1.7 2004/06/19 16:49:07 uzadow</span>
00085 <span class="comment">| Changed GetImage so it works with PLBmpBase</span>
00086 <span class="comment">|</span>
00087 <span class="comment">| Revision 1.6 2004/06/06 12:56:38 uzadow</span>
00088 <span class="comment">| Doxygenified documentation.</span>
00089 <span class="comment">|</span>
00090 <span class="comment">| Revision 1.5 2003/04/13 21:51:43 uzadow</span>
00091 <span class="comment">| Added exif loading - windows ver.</span>
00092 <span class="comment">|</span>
00093 <span class="comment">| Revision 1.4 2002/08/04 20:08:01 uzadow</span>
00094 <span class="comment">| Added PLBmpInfo class, ability to extract metainformation from images without loading the whole image and proper greyscale support.</span>
00095 <span class="comment">|</span>
00096 <span class="comment">| Revision 1.3 2002/03/31 13:36:42 uzadow</span>
00097 <span class="comment">| Updated copyright.</span>
00098 <span class="comment">|</span>
00099 <span class="comment">| Revision 1.2 2001/10/21 17:12:40 uzadow</span>
00100 <span class="comment">| Added PSD decoder beta, removed BPPWanted from all decoders, added PLFilterPixel.</span>
00101 <span class="comment">|</span>
00102 <span class="comment">| Revision 1.1 2001/09/16 19:03:22 uzadow</span>
00103 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00104 <span class="comment">|</span>
00105 <span class="comment">| Revision 1.8 2001/09/15 21:02:44 uzadow</span>
00106 <span class="comment">| Cleaned up stdpch.h and config.h to make them internal headers.</span>
00107 <span class="comment">|</span>
00108 <span class="comment">| Revision 1.7 2000/12/18 22:42:52 uzadow</span>
00109 <span class="comment">| Replaced RGBAPIXEL with PLPixel32.</span>
00110 <span class="comment">|</span>
00111 <span class="comment">| Revision 1.6 2000/01/16 20:43:13 anonymous</span>
00112 <span class="comment">| Removed MFC dependencies</span>
00113 <span class="comment">|</span>
00114 <span class="comment">| Revision 1.5 1999/12/08 15:39:45 Ulrich von Zadow</span>
00115 <span class="comment">| Unix compatibility changes</span>
00116 <span class="comment">|</span>
00117 <span class="comment">| Revision 1.4 1999/11/27 18:45:48 Ulrich von Zadow</span>
00118 <span class="comment">| Added/Updated doc comments.</span>
00119 <span class="comment">|</span>
00120 <span class="comment">|</span>
00121 <span class="comment">\--------------------------------------------------------------------</span>
00122 <span class="comment">*/</span>
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