Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_p_n_g_convert_8h_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Multimedia/ICL/ICLCodec/PNGConvert.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// PngConvert.H</span>
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00004"></a>00004 <span class="comment">// All rights reserved.</span>
<a name="l00005"></a>00005 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00006"></a>00006 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00007"></a>00007 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00008"></a>00008 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00009"></a>00009 <span class="comment">//</span>
<a name="l00010"></a>00010 <span class="comment">// Initial Contributors:</span>
<a name="l00011"></a>00011 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Contributors:</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015 <span class="comment">// Description:</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef __PNGCONVERT_H__</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define __PNGCONVERT_H__</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <icl/imageplugin.h></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "PNGCodec.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="comment">//</span>
<a name="l00027"></a>00027 <span class="comment">// PNG decoder class</span>
<a name="l00028"></a>00028 <span class="comment">//</span>
<a name="l00029"></a><a class="code" href="class_c_png_decoder.html">00029</a> <span class="keyword">class </span><a class="code" href="class_c_png_decoder.html">CPngDecoder</a> : <span class="keyword">public</span> CImageDecoderPlugin
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="keyword">public</span>:
<a name="l00032"></a>00032 <span class="comment">// Construction</span>
<a name="l00033"></a>00033 <span class="keyword">static</span> <a class="code" href="class_c_png_decoder.html">CPngDecoder</a>* NewL();
<a name="l00034"></a>00034 ~<a class="code" href="class_c_png_decoder.html">CPngDecoder</a>();
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keyword">private</span>:
<a name="l00037"></a>00037 <span class="comment">// from CImageDecoderPlugin</span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// Gets the image type and sub-type for a given frame of the image that</span>
<a name="l00040"></a>00040 <span class="comment">// has just been decoded.</span>
<a name="l00041"></a>00041 <span class="keyword">virtual</span> <span class="keywordtype">void</span> ImageType(TInt aFrameNumber, TUid& aImageType, TUid& aImageSubType) <span class="keyword">const</span>;
<a name="l00042"></a>00042 <span class="comment">// Gets text descriptions of image properties</span>
<a name="l00043"></a>00043 CFrameInfoStrings* FrameInfoStringsL(RFs& aFs, TInt aFrameNumber);
<a name="l00044"></a>00044 <span class="comment">// Scans the image header.</span>
<a name="l00045"></a>00045 <span class="keywordtype">void</span> ScanDataL();
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">private</span>:
<a name="l00048"></a>00048 <a class="code" href="class_c_png_decoder.html">CPngDecoder</a>();
<a name="l00049"></a>00049 <span class="keywordtype">void</span> ReadFormatL();
<a name="l00050"></a>00050 };
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="comment">//</span>
<a name="l00053"></a>00053 <span class="comment">// PNG encoder class</span>
<a name="l00054"></a>00054 <span class="comment">//</span>
<a name="l00055"></a><a class="code" href="class_c_png_encoder.html">00055</a> <span class="keyword">class </span><a class="code" href="class_c_png_encoder.html">CPngEncoder</a> : <span class="keyword">public</span> CImageEncoderPlugin
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keyword">public</span>:
<a name="l00058"></a>00058 <span class="comment">// Construction</span>
<a name="l00059"></a>00059 <span class="keyword">static</span> <a class="code" href="class_c_png_encoder.html">CPngEncoder</a>* NewL();
<a name="l00060"></a>00060 ~<a class="code" href="class_c_png_encoder.html">CPngEncoder</a>();
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keyword">private</span>:
<a name="l00063"></a>00063 <span class="comment">// from CImageEncoderPlugin</span>
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="comment">// Sets up the codec to encode the frame</span>
<a name="l00066"></a>00066 <span class="keywordtype">void</span> PrepareEncoderL(<span class="keyword">const</span> CFrameImageData* aFrameImageData);
<a name="l00067"></a>00067 <span class="comment">// Update header (not used)</span>
<a name="l00068"></a>00068 <span class="keywordtype">void</span> UpdateHeaderL() {};
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">private</span>:
<a name="l00071"></a>00071 <a class="code" href="class_c_png_encoder.html">CPngEncoder</a>();
<a name="l00072"></a>00072 };
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="preprocessor">#endif // __PNGCONVERT_H__</span>
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