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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<h1>plbmpdec.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: plbmpdec_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_PLBMPDEC</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLBMPDEC</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">#ifndef INCL_PLWINDEFS</span>
00019 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="plwindefs_8h.html">plwindefs.h</a>"</span>
00020 <span class="preprocessor">#endif</span>
00021 <span class="preprocessor"></span><span class="comment"></span>
00022 <span class="comment">//! Windows bitmap file decoder. Decodes bitmap files (compressed and</span>
00023 <span class="comment">//! uncompressed) of all bit depths. Returns an 8</span>
00024 <span class="comment">//! or 32 bpp bitmap.</span>
<a name="l00025"></a><a class="code" href="classPLBmpDecoder.html">00025</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLBmpDecoder.html">PLBmpDecoder</a> : <span class="keyword">public</span> <a class="code" href="classPLPicDecoder.html">PLPicDecoder</a>
00026 {
00027
00028 <span class="keyword">public</span>:<span class="comment"></span>
00029 <span class="comment"> //! Creates a decoder</span>
00030 <span class="comment"></span> <a class="code" href="classPLBmpDecoder.html">PLBmpDecoder</a>
00031 ();
00032 <span class="comment"></span>
00033 <span class="comment"> //! Destroys a decoder</span>
00034 <span class="comment"></span> <span class="keyword">virtual</span> ~<a class="code" href="classPLBmpDecoder.html">PLBmpDecoder</a>
00035 ();
00036 <span class="comment"></span>
00037 <span class="comment"> //! Opens the data source. </span>
00038 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLBmpDecoder.html#a2">Open</a> (<a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc);
00039 <span class="comment"></span>
00040 <span class="comment"> //! Fills the bitmap with the main image. </span>
00041 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLBmpDecoder.html#a3">GetImage</a> (<a class="code" href="classPLBmpBase.html">PLBmpBase</a> & Bmp);
00042 <span class="comment"></span>
00043 <span class="comment"> //!</span>
00044 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Close ();
00045
00046 <span class="keyword">private</span>:
00047
00048 <span class="comment">// Decodes the bitmap file & info headers</span>
00049 WINBITMAPINFOHEADER * getInfoHeader
00050 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00051 <a class="code" href="classPLPixel32.html">PLPixel32</a>* Pal
00052 );
00053
00054 <span class="comment">// Decodes a 2-color bitmap. Ignores the palette & just uses</span>
00055 <span class="comment">// black & white as 'colors'</span>
00056 <span class="keywordtype">void</span> decode1bpp
00057 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00058 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp
00059 );
00060
00061 <span class="comment">// Decodes an uncompressed 16-color-bitmap.</span>
00062 <span class="keywordtype">void</span> decode4bpp
00063 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00064 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp
00065 );
00066
00067 <span class="comment">// Decodes an uncompressed 256-color-bitmap.</span>
00068 <span class="keywordtype">void</span> decode8bpp
00069 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00070 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp
00071 );
00072
00073 <span class="comment">// Decodes a compressed 16-color-bitmap.</span>
00074 <span class="keywordtype">void</span> decodeRLE4
00075 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00076 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp
00077 );
00078
00079 <span class="comment">// Decodes a compressed 256-color-bitmap.</span>
00080 <span class="keywordtype">void</span> decodeRLE8
00081 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00082 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp
00083 );
00084
00085 <span class="keywordtype">void</span> decodeHiColor
00086 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00087 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00088 WINBITMAPINFOHEADER * pBMI
00089 );
00090
00091 <span class="comment">// Decodes true-color bitmap</span>
00092 <span class="keywordtype">void</span> decodeTrueColor
00093 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00094 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00095 <span class="keywordtype">int</span> SrcBPP
00096 );
00097
00098 <span class="keywordtype">void</span> decode15bppLine
00099 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00100 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00101 PLBYTE * pDest
00102 );
00103
00104 <span class="keywordtype">void</span> decode16bppLine
00105 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00106 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00107 PLBYTE * pDest
00108 );
00109
00110 <span class="keywordtype">void</span> decode24bppLine
00111 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00112 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00113 PLBYTE * pDest
00114 );
00115
00116 <span class="keywordtype">void</span> decode32bppLine
00117 ( <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00118 <a class="code" href="classPLBmpBase.html">PLBmpBase</a> * pBmp,
00119 PLBYTE * pDest
00120 );
00121
00122
00123 <span class="comment">// Decodes two 4-bit pixels using a palette & puts them in pDest</span>
00124 <span class="comment">// and pDest+4.</span>
00125 <span class="keywordtype">void</span> decode2Nibbles
00126 ( PLBYTE * pDest,
00127 PLBYTE SrcByte
00128 );
00129
00130 <span class="comment">// Makes a private copy of the palette in the file and sets the</span>
00131 <span class="comment">// alpha channel. Returns the number of colors read.</span>
00132 <span class="keywordtype">int</span> readPalette
00133 ( WINBITMAPINFOHEADER * pBMI, <span class="comment">// Pointer to bitmapinfoheader in file.</span>
00134 <a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc,
00135 <a class="code" href="classPLPixel32.html">PLPixel32</a> * pPal,
00136 <span class="keywordtype">int</span> RGBSize
00137 );
00138
00139 <a class="code" href="classPLPixel32.html">PLPixel32</a> m_Pal[256];
00140 WINBITMAPINFOHEADER * m_pBMI;
00141 };
00142
00143 <span class="preprocessor">#endif</span>
00144 <span class="preprocessor"></span><span class="comment">/*</span>
00145 <span class="comment">/--------------------------------------------------------------------</span>
00146 <span class="comment">|</span>
00147 <span class="comment">| $Log: plbmpdec_8h-source.html,v $
00147 <span class="comment">| Revision 1.4 2004/09/15 15:26:29 uzadow
00147 <span class="comment">| Linux compatibility changes, doc update.
00147 <span class="comment">|</span>
00148 <span class="comment">| Revision 1.9 2004/06/19 16:49:07 uzadow</span>
00149 <span class="comment">| Changed GetImage so it works with PLBmpBase</span>
00150 <span class="comment">|</span>
00151 <span class="comment">| Revision 1.8 2004/06/06 12:56:38 uzadow</span>
00152 <span class="comment">| Doxygenified documentation.</span>
00153 <span class="comment">|</span>
00154 <span class="comment">| Revision 1.7 2002/08/04 20:08:01 uzadow</span>
00155 <span class="comment">| Added PLBmpInfo class, ability to extract metainformation from images without loading the whole image and proper greyscale support.</span>
00156 <span class="comment">|</span>
00157 <span class="comment">| Revision 1.6 2002/03/31 13:36:41 uzadow</span>
00158 <span class="comment">| Updated copyright.</span>
00159 <span class="comment">|</span>
00160 <span class="comment">| Revision 1.5 2001/10/21 17:12:39 uzadow</span>
00161 <span class="comment">| Added PSD decoder beta, removed BPPWanted from all decoders, added PLFilterPixel.</span>
00162 <span class="comment">|</span>
00163 <span class="comment">| Revision 1.4 2001/10/06 22:37:08 uzadow</span>
00164 <span class="comment">| Linux compatibility.</span>
00165 <span class="comment">|</span>
00166 <span class="comment">| Revision 1.3 2001/10/06 20:44:45 uzadow</span>
00167 <span class="comment">| Linux compatibility</span>
00168 <span class="comment">|</span>
00169 <span class="comment">| Revision 1.2 2001/10/05 21:15:09 uzadow</span>
00170 <span class="comment">| Improved support for OS/2 bitmap decoding.</span>
00171 <span class="comment">|</span>
00172 <span class="comment">| Revision 1.1 2001/09/16 19:03:22 uzadow</span>
00173 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00174 <span class="comment">|</span>
00175 <span class="comment">|</span>
00176 <span class="comment">\--------------------------------------------------------------------</span>
00177 <span class="comment">*/</span>
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