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<h1>/home/dwoods/DevIL/src-IL/include/il_exr.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// ImageLib Sources</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2000-2008 by Denton Woods</span>
<a name="l00005"></a>00005 <span class="comment">// Last modified: 08/29/2008</span>
<a name="l00006"></a>00006 <span class="comment">//</span>
<a name="l00007"></a>00007 <span class="comment">// Filename: src-IL/include/il_exr.h</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Description: Reads from an OpenEXR (.exr) file.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">//-----------------------------------------------------------------------------</span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#ifndef EXR_H</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#define EXR_H</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include "il_internal.h"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <ImfIO.h></span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment">//using namespace Imf; // Using this leads to errors with Microsoft's IStream.</span>
<a name="l00022"></a>00022 <span class="comment">// So it is better to just specify the namespace explicitly.</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="keyword">typedef</span> <span class="keyword">struct </span>EXRHEAD
<a name="l00026"></a>00026 {
<a name="l00027"></a>00027 ILuint MagicNumber; <span class="comment">// File signature (0x76, 0x2f, 0x31, 0x01)</span>
<a name="l00028"></a>00028 ILuint Version; <span class="comment">// Treated as two bitfields</span>
<a name="l00029"></a>00029 } IL_PACKSTRUCT EXRHEAD;
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">//@TODO: Should I just do these as enums?</span>
<a name="l00032"></a>00032 <span class="preprocessor">#define EXR_UINT 0</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#define EXR_HALF 1</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="preprocessor">#define EXR_FLOAT 2</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span>
<a name="l00036"></a>00036 <span class="preprocessor">#define EXR_NO_COMPRESSION 0</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#define EXR_RLE_COMPRESSION 1</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define EXR_ZIPS_COMPRESSION 2</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#define EXR_ZIP_COMPRESSION 3</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define EXR_PIZ_COMPRESSION 4</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#define EXR_PXR24_COMPRESSION 5</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#define EXR_B44_COMPRESSION 6</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#define EXR_B44A_COMPRESSION 7</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {
<a name="l00048"></a>00048 <span class="preprocessor">#endif</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span>
<a name="l00050"></a>00050 ILboolean iIsValidExr();
<a name="l00051"></a>00051 ILboolean iCheckExr(EXRHEAD *Header);
<a name="l00052"></a>00052 ILboolean iLoadExrInternal();
<a name="l00053"></a>00053 ILboolean iSaveExrInternal();
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span>}
<a name="l00057"></a>00057 <span class="preprocessor">#endif</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span>
<a name="l00059"></a>00059 <span class="keyword">class </span>ilIStream : <span class="keyword">public</span> Imf::IStream
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 <span class="keyword">public</span>:
<a name="l00062"></a>00062 ilIStream(<span class="comment">/*ILHANDLE Handle*/</span>);
<a name="l00063"></a>00063 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> read (<span class="keywordtype">char</span> c[<span class="comment">/*n*/</span>], <span class="keywordtype">int</span> n);
<a name="l00064"></a>00064 <span class="comment">// I don't think I need this one, since we are taking care of the file handles ourselves.</span>
<a name="l00065"></a>00065 <span class="comment">//virtual char * readMemoryMapped (int n);</span>
<a name="l00066"></a>00066 <span class="keyword">virtual</span> Imf::Int64 tellg ();
<a name="l00067"></a>00067 <span class="keyword">virtual</span> <span class="keywordtype">void</span> seekg (Imf::Int64 Pos);
<a name="l00068"></a>00068 <span class="keyword">virtual</span> <span class="keywordtype">void</span> clear ();
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">protected</span>:
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keyword">private</span>:
<a name="l00073"></a>00073 };
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keyword">class </span>ilOStream : <span class="keyword">public</span> Imf::OStream
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="keyword">public</span>:
<a name="l00078"></a>00078 ilOStream(<span class="comment">/*ILHANDLE Handle*/</span>);
<a name="l00079"></a>00079 <span class="keyword">virtual</span> <span class="keywordtype">void</span> write (<span class="keyword">const</span> <span class="keywordtype">char</span> c[<span class="comment">/*n*/</span>], <span class="keywordtype">int</span> n);
<a name="l00080"></a>00080 <span class="comment">// I don't think I need this one, since we are taking care of the file handles ourselves.</span>
<a name="l00081"></a>00081 <span class="comment">//virtual char * readMemoryMapped (int n);</span>
<a name="l00082"></a>00082 <span class="keyword">virtual</span> Imf::Int64 tellp ();
<a name="l00083"></a>00083 <span class="keyword">virtual</span> <span class="keywordtype">void</span> seekp (Imf::Int64 Pos);
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">protected</span>:
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keyword">private</span>:
<a name="l00088"></a>00088 };
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="preprocessor">#endif//EXR_H</span>
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