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<h1>pljpegenc.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: pljpegenc_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_PLJPEGENC</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLJPEGENC</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#ifndef INCL_PLPICENC</span>
00015 <span class="preprocessor"></span><span class="preprocessor">#include "plpicenc.h"</span>
00016 <span class="preprocessor">#endif</span>
00017 <span class="preprocessor"></span>
00018 <span class="preprocessor">#include "plexif.h"</span>
00019
00020 <span class="keyword">struct </span>jpeg_compress_struct;
00021 <span class="keyword">struct </span>jpeg_error_mgr;
00022 <span class="comment"></span>
00023 <span class="comment">//! JPEG file encoder. Uses the independent JPEG group's library</span>
00024 <span class="comment">//! to do the actual conversion.</span>
<a name="l00025"></a><a class="code" href="classPLJPEGEncoder.html">00025</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLJPEGEncoder.html">PLJPEGEncoder</a> : <span class="keyword">public</span> <a class="code" href="classPLPicEncoder.html">PLPicEncoder</a>
00026 {
00027
00028 <span class="keyword">public</span>:<span class="comment"></span>
00029 <span class="comment"> //! Creates an encoder</span>
00030 <span class="comment"></span> <a class="code" href="classPLJPEGEncoder.html">PLJPEGEncoder</a>
00031 ();
00032 <span class="comment"></span>
00033 <span class="comment"> //! Destroys a encoder</span>
00034 <span class="comment"></span> ~<a class="code" href="classPLJPEGEncoder.html">PLJPEGEncoder</a>
00035 ();
00036
00037 <span class="comment">// todo: Notification not yet implemented for encoding.</span>
00038 <span class="comment">/*</span>
00039 <span class="comment"> static void JNotification</span>
00040 <span class="comment"> (j_common_ptr cinfo</span>
00041 <span class="comment"> );</span>
00042 <span class="comment"> */</span>
00043 <span class="comment"></span>
00044 <span class="comment"> //! Set the compression quality on a scale from 0 to 100.</span>
00045 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#a2">SetQuality</a>(<span class="keywordtype">int</span> iQuality);<span class="comment"></span>
00046 <span class="comment"> //! Enable or disable the generation of optimal Huffmann coding tables.</span>
00047 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#a3">SetOptimizeCoding</a>(<span class="keywordtype">bool</span> bOptimizeCoding);<span class="comment"></span>
00048 <span class="comment"> //! Set the smoothing factor (<=100). 0 turns it off.</span>
00049 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#a4">SetSmoothingFactor</a>(<span class="keywordtype">int</span> iSmoothingFactor);<span class="comment"></span>
00050 <span class="comment"> //! Set the resolution information (DPI) for the image.</span>
00051 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#a5">SetDensity</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> uiX, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> uiY);
00052 <span class="comment"></span>
00053 <span class="comment"> //! Set Exif (digital camera) Data for the next encode. The encoder only </span>
00054 <span class="comment"> //! holds on to the Exif data until the next encode.</span>
00055 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#a6">SetExifData</a>(PLExif& ExifData);
00056
00057 <span class="keyword">protected</span>:
00058 <span class="comment">// Sets up the jpeg library data source and error handler and</span>
00059 <span class="comment">// calls the jpeg encoder.</span>
00060 <span class="keywordtype">void</span> <a class="code" href="classPLJPEGEncoder.html#b0">DoEncode</a>
00061 ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00062 <a class="code" href="classPLDataSink.html">PLDataSink</a> * pDataSink
00063 );
00064
00065 <span class="keyword">private</span>:
00066 <span class="comment">// Assumes IJPEG decoder is already set up.</span>
00067 <span class="keywordtype">void</span> encodeRGB
00068 ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00069 <span class="keywordtype">int</span> iScanLines
00070 );
00071
00072 jpeg_compress_struct * m_pcinfo; <span class="comment">// IJPEG encoder state.</span>
00073 jpeg_error_mgr * m_pjerr; <span class="comment">// Custom error manager.</span>
00074
00075 <span class="keywordtype">int</span> iQuality_;
00076 <span class="keywordtype">bool</span> bOptimizeCoding_;
00077 <span class="keywordtype">int</span> iSmoothingFactor_;
00078 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> uiDensityX_;
00079 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> uiDensityY_;
00080 PLExif* m_pExifData;
00081 };
00082
00083 <span class="preprocessor">#endif</span>
00084 <span class="preprocessor"></span>
00085 <span class="comment">/*</span>
00086 <span class="comment">/--------------------------------------------------------------------</span>
00087 <span class="comment">|</span>
00088 <span class="comment">| $Log: pljpegenc_8h-source.html,v $
00088 <span class="comment">| Revision 1.4 2004/09/15 15:26:29 uzadow
00088 <span class="comment">| Linux compatibility changes, doc update.
00088 <span class="comment">|</span>
00089 <span class="comment">| Revision 1.5 2004/06/19 18:16:33 uzadow</span>
00090 <span class="comment">| Documentation update</span>
00091 <span class="comment">|</span>
00092 <span class="comment">| Revision 1.4 2003/04/19 19:03:52 uzadow</span>
00093 <span class="comment">| Exif save (windows)</span>
00094 <span class="comment">|</span>
00095 <span class="comment">| Revision 1.3 2002/02/24 13:00:21 uzadow</span>
00096 <span class="comment">| Documentation update; removed buggy PLFilterRotate.</span>
00097 <span class="comment">|</span>
00098 <span class="comment">| Revision 1.2 2001/10/06 20:44:45 uzadow</span>
00099 <span class="comment">| Linux compatibility</span>
00100 <span class="comment">|</span>
00101 <span class="comment">| Revision 1.1 2001/09/16 19:03:22 uzadow</span>
00102 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00103 <span class="comment">|</span>
00104 <span class="comment">| Revision 1.5 2000/05/22 17:43:25 Ulrich von Zadow</span>
00105 <span class="comment">| Added SetQuality(), SetDensity(), SetOptimizeCoding() and</span>
00106 <span class="comment">| SetSmoothingFactor().</span>
00107 <span class="comment">|</span>
00108 <span class="comment">| Revision 1.4 2000/01/16 20:43:13 anonymous</span>
00109 <span class="comment">| Removed MFC dependencies</span>
00110 <span class="comment">|</span>
00111 <span class="comment">| Revision 1.3 1999/12/08 15:39:45 Ulrich von Zadow</span>
00112 <span class="comment">| Unix compatibility changes</span>
00113 <span class="comment">|</span>
00114 <span class="comment">| Revision 1.2 1999/11/27 18:45:48 Ulrich von Zadow</span>
00115 <span class="comment">| Added/Updated doc comments.</span>
00116 <span class="comment">|</span>
00117 <span class="comment">| Revision 1.1 1999/10/19 21:28:05 Ulrich von Zadow</span>
00118 <span class="comment">| Added jpeg encoder</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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