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<h1>plpixelformat.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: plpixelformat_8h-source.html,v 1.1 2004/09/15 15:26:32 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_PLPIXELFORMAT</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLPIXELFORMAT</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#include "pldebug.h"</span>
00015 
00016 <span class="preprocessor">#include &lt;string&gt;</span>
00017 <span class="preprocessor">#include &lt;list&gt;</span>
00018 
00019 <span class="keyword">class </span>PLPixelFormat {
00020 <span class="keyword">public</span>:
00021         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat DONTCARE;
00022 
00023     <span class="comment">// Pixel format descriptions are MSB first on all machines.</span>
00024         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat L1;
00025         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat I8;
00026         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat L8;
00027         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat L16;
00028 
00029         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat X1R5G5B5;
00030         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat A1R5G5B5;
00031         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat R5G6B5;
00032         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat R8G8B8;
00033         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat A8R8G8B8;
00034         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat X8R8G8B8;
00035         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat R16G16B16;
00036 
00037         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B5G5R5X1;
00038         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B5G5R5A1;
00039         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B5G6R5;
00040         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B8G8R8;
00041         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B8G8R8A8;
00042         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B8G8R8X8;
00043         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat B16G16R16;
00044 
00045         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat L8Cbr8;      <span class="comment">// aka YUV 4:2:2</span>
00046         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat L8Cb8Cr8;    <span class="comment">// aka YUV 4:4:4</span>
00047 
00048     PLPixelFormat();
00049         PLPixelFormat(<span class="keyword">const</span> PLPixelFormat &amp; that);
00050         PLPixelFormat&amp; operator=(<span class="keyword">const</span> PLPixelFormat &amp; that);
00051         <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> PLPixelFormat &amp; that) <span class="keyword">const</span>;
00052         <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> PLPixelFormat &amp; that) <span class="keyword">const</span>;
00053 
00054         <span class="keyword">enum</span> Channel {R=0,G,B,A,I,L,Cbr,Cb,Cr,C,M,Y,K,X, COUNT};
00055         
00056         <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> Mask;
00057 
00058         Mask GetMask(Channel ch) <span class="keyword">const</span>;
00059         <span class="keywordtype">unsigned</span> GetBitsPerPixel() <span class="keyword">const</span>;
00060         <span class="keywordtype">bool</span> HasAlpha() <span class="keyword">const</span>;
00061         <span class="keyword">const</span> PLPixelFormat &amp; UseAlpha(<span class="keywordtype">bool</span> useAlpha) <span class="keyword">const</span>;
00062         <span class="keywordtype">bool</span> IsGrayscale() <span class="keyword">const</span>;
00063         <span class="keyword">const</span> std::string&amp; GetName() <span class="keyword">const</span>;
00064         <span class="keyword">static</span> <span class="keyword">const</span> PLPixelFormat &amp; FromName(<span class="keyword">const</span> std::string &amp; name);
00065         <span class="keywordtype">int</span> GetNumColors() <span class="keyword">const</span>;
00066 
00067         <span class="keyword">struct </span>UnsupportedPixelFormat { 
00068                 UnsupportedPixelFormat(<span class="keyword">const</span> std::string&amp; what) : m_what(what) {};
00069                 <span class="keyword">const</span> std::string m_what;
00070         };
00071 
00072 <span class="keyword">private</span>:
00073         PLPixelFormat(<span class="keyword">const</span> std::string&amp; sName);
00074         
00075         std::string m_sName;
00076         <span class="keywordtype">int</span> m_BitsPerPixel;
00077         Mask m_Channelmasks[COUNT];
00078 
00079         <span class="keyword">typedef</span> std::list&lt;PLPixelFormat *&gt; PixelFormatList;
00080         <span class="keyword">static</span> PixelFormatList s_pixelFormatList;
00081 };
00082 
00083 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLPixelFormat :: HasAlpha()<span class="keyword"> const </span>{
00084         <span class="keywordflow">return</span> GetMask(A) != 0;
00085 }       
00086 
00087 <span class="keyword">inline</span> <span class="keywordtype">bool</span> PLPixelFormat :: IsGrayscale()<span class="keyword"> const </span>{
00088         <span class="keywordflow">return</span> GetMask(L) == (((Mask)1 &lt;&lt; m_BitsPerPixel) - 1);
00089 }
00090 
00091 <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> PLPixelFormat :: GetBitsPerPixel()<span class="keyword"> const </span>{
00092         <span class="keywordflow">return</span> m_BitsPerPixel;
00093 }
00094 
00095 <span class="keyword">inline</span> <span class="keyword">const</span> std::string&amp; PLPixelFormat :: GetName()<span class="keyword"> const </span>{
00096         <span class="keywordflow">return</span> m_sName;
00097 }
00098 
00099 <span class="keyword">inline</span> PLPixelFormat :: Mask PLPixelFormat :: GetMask(PLPixelFormat :: Channel ch)<span class="keyword"> const </span>{
00100         PLASSERT(ch!=COUNT);
00101         <span class="keywordflow">return</span> m_Channelmasks[ch];      
00102 }
00103   
00104 <span class="preprocessor">#endif</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Sep 13 16:16:40 2004 for paintlib by
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