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<h1>plpngdec.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: plpngdec_8h-source.html,v 1.4 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_PLPNGDEC</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLPNGDEC</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_PLPNG</span>
00019 <span class="preprocessor"></span><span class="preprocessor">#include "png.h"</span>
00020 <span class="preprocessor">#endif</span>
00021 <span class="preprocessor"></span>
00022
00023 <span class="comment"></span>
00024 <span class="comment">//! PNG file decoder. Uses LibPng to do the actual decoding.</span>
00025 <span class="comment">//! PNG supports many pixel formats not supported by paintlib. These</span>
00026 <span class="comment">//! pixel formats are converted to the nearest paintlib equivalent.</span>
00027 <span class="comment">//! Images with less or more than 8 bits per channel are converted to </span>
00028 <span class="comment">//! 8 bits per channel. Images with 16-bit palettes or grayscale </span>
00029 <span class="comment">//! images with an alpha channel are returned as full 32-bit RGBA </span>
00030 <span class="comment">//! bitmaps.</span>
<a name="l00031"></a><a class="code" href="classPLPNGDecoder.html">00031</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLPNGDecoder.html">PLPNGDecoder</a> : <span class="keyword">public</span> <a class="code" href="classPLPicDecoder.html">PLPicDecoder</a>
00032 {
00033
00034
00035 <span class="keyword">public</span>:<span class="comment"></span>
00036 <span class="comment"> //! Creates a decoder</span>
00037 <span class="comment"></span> <a class="code" href="classPLPNGDecoder.html">PLPNGDecoder</a>
00038 ();
00039 <span class="comment"></span>
00040 <span class="comment"> //! Destroys a decoder</span>
00041 <span class="comment"></span> <span class="keyword">virtual</span> ~<a class="code" href="classPLPNGDecoder.html">PLPNGDecoder</a>
00042 ();
00043 <span class="comment"></span>
00044 <span class="comment"> //!</span>
00045 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Open (<a class="code" href="classPLDataSource.html">PLDataSource</a> * pDataSrc);
00046 <span class="comment"></span>
00047 <span class="comment"> //! Fills the bitmap with the image. </span>
00048 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLPNGDecoder.html#a3">GetImage</a> (<a class="code" href="classPLBmpBase.html">PLBmpBase</a> & Bmp);
00049
00050 <span class="keyword">private</span>:
00051
00052 <span class="keyword">static</span> <span class="keywordtype">void</span> PLPNGDecoder::user_error_fn
00053 ( png_structp png_ptr,
00054 png_const_charp error_msg
00055 );
00056
00057 <span class="keyword">static</span> <span class="keywordtype">void</span> PLPNGDecoder::user_warning_fn
00058 ( png_structp png_ptr,
00059 png_const_charp warning_msg
00060 );
00061
00062 <span class="keywordtype">int</span> m_color_type, m_bit_depth;
00063 png_structp m_png_ptr;
00064 png_infop m_info_ptr;
00065 };
00066
00067 <span class="preprocessor">#endif</span>
00068 <span class="preprocessor"></span><span class="comment">/*</span>
00069 <span class="comment">/--------------------------------------------------------------------</span>
00070 <span class="comment">|</span>
00071 <span class="comment">| $Log: plpngdec_8h-source.html,v $
00071 <span class="comment">| Revision 1.4 2004/09/15 15:26:32 uzadow
00071 <span class="comment">| Linux compatibility changes, doc update.
00071 <span class="comment">|</span>
00072 <span class="comment">| Revision 1.5 2004/06/19 16:49:07 uzadow</span>
00073 <span class="comment">| Changed GetImage so it works with PLBmpBase</span>
00074 <span class="comment">|</span>
00075 <span class="comment">| Revision 1.4 2002/08/04 20:08:01 uzadow</span>
00076 <span class="comment">| Added PLBmpInfo class, ability to extract metainformation from images without loading the whole image and proper greyscale support.</span>
00077 <span class="comment">|</span>
00078 <span class="comment">| Revision 1.3 2002/03/31 13:36:42 uzadow</span>
00079 <span class="comment">| Updated copyright.</span>
00080 <span class="comment">|</span>
00081 <span class="comment">| Revision 1.2 2001/10/21 17:12:40 uzadow</span>
00082 <span class="comment">| Added PSD decoder beta, removed BPPWanted from all decoders, added PLFilterPixel.</span>
00083 <span class="comment">|</span>
00084 <span class="comment">| Revision 1.1 2001/09/16 19:03:22 uzadow</span>
00085 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00086 <span class="comment">|</span>
00087 <span class="comment">| Revision 1.5 2000/12/18 22:42:52 uzadow</span>
00088 <span class="comment">| Replaced RGBAPIXEL with PLPixel32.</span>
00089 <span class="comment">|</span>
00090 <span class="comment">| Revision 1.4 2000/01/16 20:43:14 anonymous</span>
00091 <span class="comment">| Removed MFC dependencies</span>
00092 <span class="comment">|</span>
00093 <span class="comment">| Revision 1.3 1999/12/08 15:39:45 Ulrich von Zadow</span>
00094 <span class="comment">| Unix compatibility changes</span>
00095 <span class="comment">|</span>
00096 <span class="comment">|</span>
00097 <span class="comment">--------------------------------------------------------------------</span>
00098 <span class="comment">*/</span>
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