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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/iclencodeexample_8cpp-source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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<title>TB10.1 Example Applications: examples/Multimedia/ICL/ICLExample/iclencodeexample.cpp Source File</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.5.3 -->
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<h1>examples/Multimedia/ICL/ICLExample/iclencodeexample.cpp</h1><a href="iclencodeexample_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// iclencodeexample.cpp</span>
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<a name="l00002"></a>00002 <span class="comment">// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00003"></a>00003 <span class="comment">// All rights reserved.</span>
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<a name="l00004"></a>00004 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00005"></a>00005 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
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<a name="l00006"></a>00006 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00007"></a>00007 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
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<a name="l00008"></a>00008 <span class="comment">//</span>
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<a name="l00009"></a>00009 <span class="comment">// Initial Contributors:</span>
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<a name="l00010"></a>00010 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00011"></a>00011 <span class="comment">//</span>
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<a name="l00012"></a>00012 <span class="comment">// Contributors:</span>
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<a name="l00013"></a>00013 <span class="comment">//</span>
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<a name="l00014"></a>00014 <span class="comment">// Description:</span>
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<a name="l00015"></a>00015 <span class="comment">// </span>
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<a name="l00016"></a>00016 <span class="comment">//</span>
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018
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<a name="l00039"></a>00039 <span class="preprocessor">#include "<a class="code" href="iclexample_8h.html">iclexample.h</a>"</span>
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<a name="l00040"></a>00040 <span class="preprocessor">#include &lt;gifscaler.h&gt;</span>
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<a name="l00041"></a>00041 <span class="preprocessor">#include &lt;imagetransform.h&gt;</span>
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<a name="l00042"></a>00042
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<a name="l00053"></a><a class="code" href="class_c_icl_example.html#d62bffc043397eb7306cfb0d1bf427df">00053</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#d62bffc043397eb7306cfb0d1bf427df">CIclExample::EncodeBitmapToDescriptorL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00054"></a>00054         {
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<a name="l00055"></a>00055         HBufC8* encodedImageDescriptor = NULL;
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<a name="l00056"></a>00056
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<a name="l00057"></a>00057         <span class="comment">// Create the encoder, passing a buffer to store the encoded image</span>
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<a name="l00058"></a>00058         CImageEncoder* encoder = CImageEncoder::DataNewL(encodedImageDescriptor, CImageEncoder::EOptionNone,KImageTypeGIFUid);
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<a name="l00059"></a>00059         CleanupStack::PushL(encoder);
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<a name="l00060"></a>00060
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<a name="l00061"></a>00061         <span class="comment">// Create a CFbsBitmap to store the source bitmap to encode</span>
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<a name="l00062"></a>00062         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00063"></a>00063         CleanupStack::PushL(sourceBitmap);
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<a name="l00064"></a>00064
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<a name="l00065"></a>00065         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(20,30), EColor16M));
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<a name="l00066"></a>00066         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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<a name="l00067"></a>00067
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<a name="l00068"></a>00068         <span class="comment">// See Note 1</span>
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<a name="l00069"></a>00069         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00070"></a>00070
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<a name="l00071"></a>00071         <span class="comment">// Convert the image</span>
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<a name="l00072"></a>00072         encoder-&gt;Convert(&amp;activeListener-&gt;iStatus, *sourceBitmap);
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<a name="l00073"></a>00073
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<a name="l00074"></a>00074         <span class="comment">// See Note 2</span>
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<a name="l00075"></a>00075         CActiveScheduler::Start();
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<a name="l00076"></a>00076         User::LeaveIfError(activeListener-&gt;iStatus.Int());<span class="comment">// encode complete either display the image or report an error.</span>
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<a name="l00077"></a>00077
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<a name="l00078"></a>00078
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<a name="l00079"></a>00079         CleanupStack::PopAndDestroy(3); <span class="comment">// encoder, sourceBitmap and activeListener</span>
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<a name="l00080"></a>00080
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<a name="l00081"></a>00081
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<a name="l00082"></a>00082         <span class="comment">// We can use the descriptor here</span>
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084         <span class="comment">// And as we took ownership back, we need to push into the cleanup stack to make sure no</span>
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<a name="l00085"></a>00085         <span class="comment">// memory leaks take place if any leave later</span>
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<a name="l00086"></a>00086
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<a name="l00087"></a>00087         CleanupDeletePushL(encodedImageDescriptor);
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<a name="l00088"></a>00088
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090         <span class="comment">// Just verifying the presence of some output. </span>
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<a name="l00091"></a>00091
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<a name="l00092"></a>00092         RFile file;
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<a name="l00093"></a>00093
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<a name="l00094"></a>00094         User::LeaveIfError(file.Replace(iFs, _L(<span class="stringliteral">"c:\\ICLExample\\encodeddescriptor.mbm"</span>), EFileWrite));
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<a name="l00095"></a>00095         CleanupClosePushL(file);
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<a name="l00097"></a>00097         User::LeaveIfError(file.Write(*encodedImageDescriptor));
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<a name="l00099"></a>00099         CleanupStack::PopAndDestroy(&amp;file);
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102         CleanupStack::PopAndDestroy(encodedImageDescriptor);
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<a name="l00103"></a>00103         }
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<a name="l00116"></a><a class="code" href="class_c_icl_example.html#e104f588c16e81bfbfe09e6cfc43ef16">00116</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#e104f588c16e81bfbfe09e6cfc43ef16">CIclExample::EncodeImageWithThumbnailL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00117"></a>00117         {
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<a name="l00118"></a>00118         HBufC8* encodedImageDescriptor = NULL;
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<a name="l00119"></a>00119
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<a name="l00120"></a>00120         <span class="comment">// Create the encoder, passing a buffer to store the encoded image</span>
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<a name="l00121"></a>00121         CImageEncoder* encoder = CImageEncoder::DataNewL(encodedImageDescriptor, CImageEncoder::EOptionNone, KImageTypeJPGUid);
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<a name="l00122"></a>00122         CleanupStack::PushL(encoder);
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124         <span class="comment">// Set the image type to thumbnail </span>
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<a name="l00125"></a>00125         encoder-&gt;SetThumbnail(ETrue);
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<a name="l00126"></a>00126
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<a name="l00127"></a>00127         <span class="comment">// Create a bitmap to access the thumbnail</span>
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<a name="l00128"></a>00128         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00129"></a>00129         CleanupStack::PushL(sourceBitmap);
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<a name="l00130"></a>00130
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<a name="l00131"></a>00131         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(250,200), EColor16M));
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<a name="l00132"></a>00132         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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<a name="l00133"></a>00133
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<a name="l00134"></a>00134         <span class="comment">// See Note 1</span>
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<a name="l00135"></a>00135         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00136"></a>00136
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<a name="l00137"></a>00137         <span class="comment">// Convert the image</span>
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<a name="l00138"></a>00138         encoder-&gt;Convert(&amp;activeListener-&gt;iStatus, *sourceBitmap);
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<a name="l00139"></a>00139
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<a name="l00140"></a>00140         <span class="comment">// See Note 2</span>
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<a name="l00141"></a>00141         CActiveScheduler::Start();
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<a name="l00142"></a>00142         User::LeaveIfError(activeListener-&gt;iStatus.Int()); <span class="comment">// access to thumbnail complete either display the image or report an error.</span>
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<a name="l00143"></a>00143
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<a name="l00144"></a>00144
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<a name="l00145"></a>00145         CleanupStack::PopAndDestroy(3); <span class="comment">// encoder, sourceBitmap and activeListener</span>
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<a name="l00146"></a>00146
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<a name="l00147"></a>00147
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<a name="l00148"></a>00148         <span class="comment">// We can use the descriptor here</span>
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<a name="l00149"></a>00149
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<a name="l00150"></a>00150         <span class="comment">// And as we took ownership back, we need to push into the cleanup stack to make sure no</span>
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<a name="l00151"></a>00151         <span class="comment">// memory leaks take place if any leave later</span>
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<a name="l00152"></a>00152
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<a name="l00153"></a>00153         CleanupDeletePushL(encodedImageDescriptor);
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<a name="l00154"></a>00154
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<a name="l00155"></a>00155
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<a name="l00156"></a>00156     <span class="comment">// Just verifying the presence of some output.</span>
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<a name="l00157"></a>00157
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<a name="l00158"></a>00158         RFile file;
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<a name="l00159"></a>00159
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<a name="l00160"></a>00160         User::LeaveIfError(file.Replace(iFs, _L(<span class="stringliteral">"c:\\ICLExample\\encodedbitmapwiththumbnail.mbm"</span>), EFileWrite));
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<a name="l00161"></a>00161         CleanupClosePushL(file);
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<a name="l00162"></a>00162
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<a name="l00163"></a>00163         User::LeaveIfError(file.Write(*encodedImageDescriptor));
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<a name="l00164"></a>00164
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<a name="l00165"></a>00165         CleanupStack::PopAndDestroy(&amp;file);
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<a name="l00166"></a>00166
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<a name="l00167"></a>00167
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<a name="l00168"></a>00168         CleanupStack::PopAndDestroy(encodedImageDescriptor);
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<a name="l00169"></a>00169         }
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<a name="l00170"></a>00170
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<a name="l00171"></a>00171
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<a name="l00183"></a><a class="code" href="class_c_icl_example.html#dc8169ae5510b9b6d5e55c28e08574c5">00183</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#dc8169ae5510b9b6d5e55c28e08574c5">CIclExample::SettingExifMetadataL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00184"></a>00184         {
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<a name="l00185"></a>00185         HBufC8* encodedImageDescriptor = NULL;
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<a name="l00186"></a>00186
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<a name="l00187"></a>00187         <span class="comment">// Create the encoder, passing a buffer to store the encoded image</span>
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<a name="l00188"></a>00188         CJPEGExifEncoder* exifEncoder = <span class="keyword">static_cast&lt;</span>CJPEGExifEncoder*<span class="keyword">&gt;</span>(CImageEncoder::DataNewL(encodedImageDescriptor, CImageEncoder::EOptionNone, KImageTypeJPGUid));
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<a name="l00189"></a>00189         CleanupStack::PushL(exifEncoder);
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<a name="l00190"></a>00190
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<a name="l00191"></a>00191         <span class="comment">// Create a MExifMetadata object and initialize it with the metadata associated with CJPEGexifEncoder  </span>
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<a name="l00192"></a>00192         MExifMetadataWriter* metaData = exifEncoder-&gt;ExifMetadata();
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<a name="l00193"></a>00193
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<a name="l00194"></a>00194         <span class="comment">// Create a TExifWriterUtility object to write the metadata in to the image</span>
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<a name="l00195"></a>00195         TExifWriterUtility exifWriteUtility(metaData);
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<a name="l00196"></a>00196
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<a name="l00197"></a>00197         HBufC8* buf8ParamWriteVersion = KBuf8ParamWriteVersion().AllocLC();
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<a name="l00199"></a>00199         User::LeaveIfError(exifWriteUtility.SetImageDescription(buf8ParamWriteVersion));
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<a name="l00201"></a>00201         CleanupStack::PopAndDestroy(buf8ParamWriteVersion);
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<a name="l00202"></a>00202
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<a name="l00203"></a>00203
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<a name="l00204"></a>00204         <span class="comment">// Create a bitmap </span>
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<a name="l00205"></a>00205         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00206"></a>00206         CleanupStack::PushL(sourceBitmap);
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<a name="l00207"></a>00207
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<a name="l00208"></a>00208         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(250,200), EColor16M));
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<a name="l00209"></a>00209         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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<a name="l00210"></a>00210
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<a name="l00211"></a>00211         <span class="comment">// See Note 1</span>
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<a name="l00212"></a>00212         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00213"></a>00213
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<a name="l00214"></a>00214         <span class="comment">// Convert the image</span>
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<a name="l00215"></a>00215         exifEncoder-&gt;Convert(&amp;activeListener-&gt;iStatus, *sourceBitmap);
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<a name="l00216"></a>00216
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<a name="l00217"></a>00217         <span class="comment">// See Note 2</span>
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<a name="l00218"></a>00218         CActiveScheduler::Start();
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<a name="l00219"></a>00219         User::LeaveIfError(activeListener-&gt;iStatus.Int());
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<a name="l00220"></a>00220
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<a name="l00221"></a>00221
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<a name="l00222"></a>00222         CleanupStack::PopAndDestroy(3); <span class="comment">// encoder, sourceBitmap and activeListener</span>
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<a name="l00223"></a>00223
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<a name="l00224"></a>00224
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<a name="l00225"></a>00225         <span class="comment">// We can use the descriptor here</span>
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<a name="l00226"></a>00226
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<a name="l00227"></a>00227         <span class="comment">// And as we took ownership back, we need to push into the cleanup stack to make sure no</span>
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<a name="l00228"></a>00228         <span class="comment">// memory leaks take place if any leave later</span>
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<a name="l00229"></a>00229
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<a name="l00230"></a>00230         CleanupDeletePushL(encodedImageDescriptor);
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<a name="l00231"></a>00231
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<a name="l00232"></a>00232
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<a name="l00233"></a>00233         <span class="comment">// Just verifying the presence of some output.</span>
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<a name="l00234"></a>00234
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<a name="l00235"></a>00235         RFile file;
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<a name="l00236"></a>00236
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<a name="l00237"></a>00237         User::LeaveIfError(file.Replace(iFs, _L(<span class="stringliteral">"c:\\ICLExample\\settingexifdescriptor.mbm"</span>), EFileWrite));
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<a name="l00238"></a>00238         CleanupClosePushL(file);
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<a name="l00239"></a>00239
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<a name="l00240"></a>00240         User::LeaveIfError(file.Write(*encodedImageDescriptor));
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<a name="l00241"></a>00241
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<a name="l00242"></a>00242         CleanupStack::PopAndDestroy(&amp;file);
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<a name="l00243"></a>00243
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<a name="l00244"></a>00244
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<a name="l00245"></a>00245         CleanupStack::PopAndDestroy(encodedImageDescriptor);
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<a name="l00246"></a>00246         }
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<a name="l00247"></a>00247
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<a name="l00248"></a>00248
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<a name="l00256"></a><a class="code" href="class_c_icl_example.html#52e7ceb0f0468de45b9b493350db2af4">00256</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#52e7ceb0f0468de45b9b493350db2af4">CIclExample::RotateBitmapL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00257"></a>00257         {
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<a name="l00258"></a>00258         <span class="comment">// Create a CBitmapRotator object and push it on the cleanup stack </span>
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<a name="l00259"></a>00259         CBitmapRotator* rotator = CBitmapRotator::NewL();
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<a name="l00260"></a>00260         CleanupStack::PushL(rotator);
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<a name="l00261"></a>00261
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<a name="l00262"></a>00262         <span class="comment">// Create a source bitmap </span>
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<a name="l00263"></a>00263         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00264"></a>00264         CleanupStack::PushL(sourceBitmap);
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<a name="l00265"></a>00265
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<a name="l00266"></a>00266         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(15,20), EColor16M));
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<a name="l00267"></a>00267         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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<a name="l00268"></a>00268
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<a name="l00269"></a>00269         <span class="comment">// See Note 1</span>
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<a name="l00270"></a>00270         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00271"></a>00271
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<a name="l00272"></a>00272         <span class="comment">// Rotate the bitmap through the specified angle</span>
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<a name="l00273"></a>00273         rotator-&gt;Rotate(&amp;activeListener-&gt;iStatus, *sourceBitmap, CBitmapRotator::ERotation180DegreesClockwise);
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<a name="l00274"></a>00274
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<a name="l00275"></a>00275         <span class="comment">// See Note 2</span>
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<a name="l00276"></a>00276         CActiveScheduler::Start();
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<a name="l00277"></a>00277         User::LeaveIfError(activeListener-&gt;iStatus.Int());
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<a name="l00278"></a>00278
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<a name="l00279"></a>00279         <span class="comment">// Just verifying the presence of some output.</span>
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<a name="l00280"></a>00280         sourceBitmap-&gt;Save(_L(<span class="stringliteral">"c:\\ICLExample\\rotatedbitmap.mbm"</span>));
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<a name="l00281"></a>00281
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<a name="l00282"></a>00282
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<a name="l00283"></a>00283         CleanupStack::PopAndDestroy(3); <span class="comment">// rotator, sourceBitmap and activeListener</span>
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<a name="l00284"></a>00284         }
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<a name="l00285"></a>00285
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<a name="l00286"></a>00286
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<a name="l00295"></a><a class="code" href="class_c_icl_example.html#b5cd4b4ee195f9ff7cc635e559603d0a">00295</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#b5cd4b4ee195f9ff7cc635e559603d0a">CIclExample::ScaleBitmapL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00296"></a>00296         {
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<a name="l00297"></a>00297         <span class="comment">// Create a source bitmap object and push it on to the cleanup stack</span>
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<a name="l00298"></a>00298         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00299"></a>00299         CleanupStack::PushL(sourceBitmap);
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<a name="l00300"></a>00300
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<a name="l00301"></a>00301         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(100,100), EGray2));
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<a name="l00302"></a>00302         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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<a name="l00303"></a>00303
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<a name="l00304"></a>00304         <span class="comment">// Create a destination bitmap  object and push it on to the cleanup stack</span>
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<a name="l00305"></a>00305         CFbsBitmap* destBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00306"></a>00306         CleanupStack::PushL(destBitmap);
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<a name="l00307"></a>00307
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<a name="l00308"></a>00308         User::LeaveIfError(destBitmap-&gt;Create(TSize(20,30), EColor16M));
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<a name="l00309"></a>00309
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<a name="l00310"></a>00310         <span class="comment">// Scale the bitmap with old algorithm</span>
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<a name="l00311"></a>00311         <span class="comment">// Create a CBitmapScaler object and push it on to the cleanup stack</span>
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<a name="l00312"></a>00312         CBitmapScaler* scaler = CBitmapScaler::NewL();
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<a name="l00313"></a>00313         CleanupStack::PushL(scaler);
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<a name="l00314"></a>00314
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<a name="l00315"></a>00315         <span class="comment">// See Note 1</span>
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<a name="l00316"></a>00316         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00317"></a>00317
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<a name="l00318"></a>00318         <span class="comment">// Scale the bitmap using low memory and medium quality algorithm</span>
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<a name="l00319"></a>00319         scaler-&gt;UseLowMemoryAlgorithm(ETrue);
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<a name="l00320"></a>00320         scaler-&gt;SetQualityAlgorithm(CBitmapScaler::EMediumQuality);
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<a name="l00321"></a>00321
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<a name="l00322"></a>00322         <span class="comment">// Call the scale() function of CBitmapScaler to perform the scaling operation with optional selection of low memory </span>
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<a name="l00323"></a>00323         scaler-&gt;Scale(&amp;activeListener-&gt;iStatus, *sourceBitmap, *destBitmap, EFalse);
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<a name="l00324"></a>00324
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<a name="l00325"></a>00325         <span class="comment">// See Note 2</span>
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<a name="l00326"></a>00326         CActiveScheduler::Start();
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<a name="l00327"></a>00327         User::LeaveIfError(activeListener-&gt;iStatus.Int());<span class="comment">// scale complete either display the image or report an error.</span>
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<a name="l00328"></a>00328
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<a name="l00329"></a>00329         <span class="comment">// Just verifying the presence of some output. Descriptor can also be used instead</span>
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<a name="l00330"></a>00330
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<a name="l00331"></a>00331         destBitmap-&gt;Save(_L(<span class="stringliteral">"c:\\ICLExample\\scaledbitmap.mbm"</span>));
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<a name="l00332"></a>00332
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<a name="l00333"></a>00333
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<a name="l00334"></a>00334         CleanupStack::PopAndDestroy(4); <span class="comment">// activeListener, scaler, destBitmap and sourceBitmap</span>
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<a name="l00335"></a>00335         }
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<a name="l00336"></a>00336
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<a name="l00337"></a>00337
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<a name="l00348"></a><a class="code" href="class_c_icl_example.html#437f4725accedc8e924ee6c897ed0498">00348</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#437f4725accedc8e924ee6c897ed0498">CIclExample::SetSourceDestinationandResizeL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00349"></a>00349         {
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<a name="l00350"></a>00350         HBufC8* desData = NULL;
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<a name="l00351"></a>00351
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<a name="l00352"></a>00352         <span class="comment">// Create CImageTransform object and push it on to the cleanup stack</span>
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<a name="l00353"></a>00353         CImageTransform* imageTransform = CImageTransform::NewL(iFs);
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<a name="l00354"></a>00354         CleanupStack::PushL(imageTransform);
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<a name="l00355"></a>00355
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<a name="l00356"></a>00356         imageTransform-&gt;SetSourceFilenameL(aFileName);
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<a name="l00357"></a>00357         imageTransform-&gt;SetDestDataL(desData);
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<a name="l00358"></a>00358         imageTransform-&gt;SetDestSizeInPixelsL(TSize(160, 120), ETrue);
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<a name="l00359"></a>00359         imageTransform-&gt;SetupL();
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<a name="l00360"></a>00360
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<a name="l00361"></a>00361         <span class="comment">// See Note 1</span>
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<a name="l00362"></a>00362         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00363"></a>00363
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<a name="l00364"></a>00364         <span class="comment">// Call Transform() function of CImageTransform for image transform operation</span>
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<a name="l00365"></a>00365         imageTransform-&gt;Transform(activeListener-&gt;iStatus);
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<a name="l00366"></a>00366
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<a name="l00367"></a>00367         <span class="comment">// See Note 2</span>
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<a name="l00368"></a>00368         CActiveScheduler::Start();
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<a name="l00369"></a>00369         <span class="comment">// destData ownership is on CLI side if something goes wrong</span>
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<a name="l00370"></a>00370         User::LeaveIfError(activeListener-&gt;iStatus.Int());
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<a name="l00371"></a>00371
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<a name="l00372"></a>00372
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<a name="l00373"></a>00373         CleanupStack::PopAndDestroy(2); <span class="comment">// imageTransform and activeListener</span>
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<a name="l00374"></a>00374
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<a name="l00375"></a>00375
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<a name="l00376"></a>00376         <span class="comment">// We can use the destination data here</span>
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<a name="l00377"></a>00377
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<a name="l00378"></a>00378         <span class="comment">// And as we took ownership back, we need to push into the cleanup stack to make sure no</span>
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<a name="l00379"></a>00379         <span class="comment">// memory leaks take place if any leave later</span>
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<a name="l00380"></a>00380
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<a name="l00381"></a>00381         CleanupDeletePushL(desData);
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<a name="l00382"></a>00382
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<a name="l00383"></a>00383
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<a name="l00384"></a>00384         <span class="comment">// Just verifying the presence of some output.</span>
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<a name="l00385"></a>00385
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<a name="l00386"></a>00386         RFile file;
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<a name="l00387"></a>00387
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<a name="l00388"></a>00388         User::LeaveIfError(file.Replace(iFs, _L(<span class="stringliteral">"c:\\ICLExample\\destdata.mbm"</span>), EFileWrite));
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<a name="l00389"></a>00389         CleanupClosePushL(file);
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<a name="l00390"></a>00390
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<a name="l00391"></a>00391         User::LeaveIfError(file.Write(*desData));
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<a name="l00392"></a>00392
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<a name="l00393"></a>00393         CleanupStack::PopAndDestroy(&amp;file);
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<a name="l00394"></a>00394
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<a name="l00395"></a>00395
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<a name="l00396"></a>00396         CleanupStack::PopAndDestroy(desData);
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<a name="l00397"></a>00397         }
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<a name="l00398"></a>00398
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<a name="l00399"></a>00399
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<a name="l00412"></a><a class="code" href="class_c_icl_example.html#cba98bc6b971306f2e568413caae443d">00412</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#cba98bc6b971306f2e568413caae443d">CIclExample::SettingWithUseOfPreserveImageDataL</a>(<span class="keyword">const</span> TDesC&amp; aFileName1,<span class="keyword">const</span> TDesC&amp; aFileName2)
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<a name="l00413"></a>00413         {
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<a name="l00414"></a>00414         TPtr8 imageFromFilePtr = LoadImageIntoMemoryLC(aFileName1);
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<a name="l00415"></a>00415
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<a name="l00416"></a>00416         <span class="comment">// Create CImageTransform object and push it on to the cleanup stack</span>
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<a name="l00417"></a>00417         CImageTransform* imageTransform = CImageTransform::NewL(iFs);
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<a name="l00418"></a>00418         CleanupStack::PushL(imageTransform);
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<a name="l00419"></a>00419
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<a name="l00420"></a>00420         imageTransform-&gt;SetSourceDataL(imageFromFilePtr);
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<a name="l00421"></a>00421         imageTransform-&gt;SetDestFilenameL(aFileName2);
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<a name="l00422"></a>00422         imageTransform-&gt;SetDestSizeInPixelsL(TSize(160, 120), ETrue);
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<a name="l00423"></a>00423         imageTransform-&gt;SetPreserveImageData(ETrue);
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<a name="l00424"></a>00424         imageTransform-&gt;SetupL();
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<a name="l00425"></a>00425
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<a name="l00426"></a>00426         <span class="comment">// Call Transform() function of CImageTransform for image transform operation</span>
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<a name="l00427"></a>00427         <span class="comment">// See Note 1</span>
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<a name="l00428"></a>00428         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00429"></a>00429
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<a name="l00430"></a>00430         <span class="comment">// Call Transform() function of CImageTransform for image transform operation</span>
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<a name="l00431"></a>00431         imageTransform-&gt;Transform(activeListener-&gt;iStatus);
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<a name="l00432"></a>00432
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<a name="l00433"></a>00433         <span class="comment">// See Note 2</span>
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<a name="l00434"></a>00434         CActiveScheduler::Start();
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<a name="l00435"></a>00435         User::LeaveIfError(activeListener-&gt;iStatus.Int());
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<a name="l00436"></a>00436
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<a name="l00437"></a>00437
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<a name="l00438"></a>00438         CleanupStack::PopAndDestroy(3); <span class="comment">// activeListener, imageTransform and imageInMemory</span>
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<a name="l00439"></a>00439         }
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<a name="l00440"></a>00440
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<a name="l00441"></a>00441
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<a name="l00452"></a><a class="code" href="class_c_icl_example.html#13e9de7f38143107e3ddf23808a822c3">00452</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#13e9de7f38143107e3ddf23808a822c3">CIclExample::AddThumbnailToJpegFileL</a>(<span class="keyword">const</span> TDesC&amp; aSrcFileName, <span class="keyword">const</span> TDesC&amp; aDesFileName)
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<a name="l00453"></a>00453         {
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<a name="l00454"></a>00454         <span class="comment">// Create a CImageTransform object and push it on to the cleanup stack</span>
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<a name="l00455"></a>00455         CImageTransform* imageTransform = NULL;
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<a name="l00456"></a>00456
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<a name="l00457"></a>00457         imageTransform = CImageTransform::NewL(iFs);
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<a name="l00458"></a>00458         CleanupStack::PushL(imageTransform);
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   368
 
<a name="l00459"></a>00459
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<a name="l00460"></a>00460         imageTransform-&gt;SetSourceFilenameL(aSrcFileName);
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<a name="l00461"></a>00461         imageTransform-&gt;SetDestFilenameL(aDesFileName);
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<a name="l00462"></a>00462         imageTransform-&gt;SetDestSizeInPixelsL(TSize(160, 120), ETrue);
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<a name="l00463"></a>00463         imageTransform-&gt;SetOptionsL(CImageTransform::EThumbnail);
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<a name="l00464"></a>00464         imageTransform-&gt;SetupL();
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   374
 
<a name="l00465"></a>00465
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<a name="l00466"></a>00466         <span class="comment">// encode the image to add thumbnail</span>
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<a name="l00467"></a>00467         <span class="comment">// See Note 1</span>
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<a name="l00468"></a>00468         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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<a name="l00469"></a>00469
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<a name="l00470"></a>00470         <span class="comment">// Call Transform() function of CImageTransform for image transform operation</span>
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<a name="l00471"></a>00471         imageTransform-&gt;Transform(activeListener-&gt;iStatus);
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<a name="l00472"></a>00472
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<a name="l00473"></a>00473         <span class="comment">// See Note 2</span>
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   383
 
<a name="l00474"></a>00474         CActiveScheduler::Start();
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<a name="l00475"></a>00475         User::LeaveIfError(activeListener-&gt;iStatus.Int());
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<a name="l00476"></a>00476
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   386
 
<a name="l00477"></a>00477
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<a name="l00478"></a>00478         CleanupStack::PopAndDestroy(2); <span class="comment">// activeListener and imageTransform</span>
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<a name="l00479"></a>00479         }
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<a name="l00480"></a>00480
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<a name="l00481"></a>00481
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   391
 
<a name="l00493"></a><a class="code" href="class_c_icl_example.html#fc6a5f0e8468d977d0b1d11001c773b7">00493</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#fc6a5f0e8468d977d0b1d11001c773b7">CIclExample::AddExifDataToJpegFileL</a>(<span class="keyword">const</span> TDesC&amp; aFileName)
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<a name="l00494"></a>00494         {
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<a name="l00495"></a>00495         HBufC8* encodedImageDescriptor = NULL;
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<a name="l00496"></a>00496
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<a name="l00497"></a>00497         <span class="comment">// Create the encoder, passing a buffer to store the encoded image</span>
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<a name="l00498"></a>00498         CJPEGExifEncoder* exifEncoder = <span class="keyword">static_cast&lt;</span>CJPEGExifEncoder*<span class="keyword">&gt;</span>(CImageEncoder::DataNewL(encodedImageDescriptor, CImageEncoder::EOptionNone, KImageTypeJPGUid));
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<a name="l00499"></a>00499         CleanupStack::PushL(exifEncoder);
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   398
 
<a name="l00500"></a>00500
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<a name="l00501"></a>00501         <span class="comment">// Create a MExifMetadata object and initializes to metadata associated with CJPEGexifEncoder  </span>
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<a name="l00502"></a>00502         MExifMetadataWriter* metaData = exifEncoder-&gt;ExifMetadata();
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   401
 
<a name="l00503"></a>00503
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   402
 
<a name="l00504"></a>00504         <span class="comment">// Create a TExifWriterUtility object to write the metadata in to the image</span>
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<a name="l00505"></a>00505         TExifWriterUtility exifWriteUtility(metaData);
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   404
 
<a name="l00506"></a>00506
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   405
 
<a name="l00507"></a>00507         HBufC8* buf8ParamWriteVersion = KBuf8ParamWriteVersion().AllocLC();
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   406
 
<a name="l00508"></a>00508
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<a name="l00509"></a>00509         User::LeaveIfError(exifWriteUtility.SetImageDescription(buf8ParamWriteVersion));
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   408
 
<a name="l00510"></a>00510
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<a name="l00511"></a>00511         CleanupStack::PopAndDestroy(buf8ParamWriteVersion);
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<a name="l00512"></a>00512
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   411
 
<a name="l00513"></a>00513
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<a name="l00514"></a>00514         <span class="comment">// Create a CFbsBitmap to store the source bitmap to encode</span>
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<a name="l00515"></a>00515         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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<a name="l00516"></a>00516         CleanupStack::PushL(sourceBitmap);
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   415
 
<a name="l00517"></a>00517
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<a name="l00518"></a>00518         User::LeaveIfError(sourceBitmap-&gt;Create(TSize(20,30), EColor16M));
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diff changeset 
   417
 
<a name="l00519"></a>00519         User::LeaveIfError(sourceBitmap-&gt;Load(aFileName));
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diff changeset 
   418
 
<a name="l00520"></a>00520
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diff changeset 
   419
 
<a name="l00521"></a>00521         <span class="comment">// Create CFrameImageData object and push it on the cleanup stack       </span>
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diff changeset 
   420
 
<a name="l00522"></a>00522         CFrameImageData* frameImageData = CFrameImageData::NewL();
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diff changeset 
   421
 
<a name="l00523"></a>00523         CleanupStack::PushL(frameImageData);
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diff changeset 
   422
 
<a name="l00524"></a>00524
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diff changeset 
   423
 
<a name="l00525"></a>00525         <span class="comment">// See Note 1</span>
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   424
 
<a name="l00526"></a>00526         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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diff changeset 
   425
 
<a name="l00527"></a>00527
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diff changeset 
   426
 
<a name="l00528"></a>00528         <span class="comment">// Convert the image</span>
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   427
 
<a name="l00529"></a>00529         exifEncoder-&gt;Convert(&amp;activeListener-&gt;iStatus, *sourceBitmap, frameImageData);
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diff changeset 
   428
 
<a name="l00530"></a>00530
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diff changeset 
   429
 
<a name="l00531"></a>00531         <span class="comment">// See Note 2</span>
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   430
 
<a name="l00532"></a>00532         CActiveScheduler::Start();
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diff changeset 
   431
 
<a name="l00533"></a>00533         User::LeaveIfError(activeListener-&gt;iStatus.Int()); <span class="comment">// encode complete either display the image or report an error.</span>
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diff changeset 
   432
 
<a name="l00534"></a>00534
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diff changeset 
   433
 
<a name="l00535"></a>00535
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   434
 
<a name="l00536"></a>00536         <span class="comment">// Just verifying the presence of some output.</span>
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diff changeset 
   435
 
<a name="l00537"></a>00537         sourceBitmap-&gt;Save(_L(<span class="stringliteral">"c:\\ICLExample\\addexifbitmap.mbm"</span>));
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diff changeset 
   436
 
<a name="l00538"></a>00538
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diff changeset 
   437
 
<a name="l00539"></a>00539
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diff changeset 
   438
 
<a name="l00540"></a>00540         CleanupStack::PopAndDestroy(4); <span class="comment">// activeListener, frameImageData, sourceBitmap and exifEncoder</span>
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diff changeset 
   439
 
<a name="l00541"></a>00541
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diff changeset 
   440
 
<a name="l00542"></a>00542
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diff changeset 
   441
 
<a name="l00543"></a>00543         <span class="comment">// We can use the descriptor here</span>
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diff changeset 
   442
 
<a name="l00544"></a>00544
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   443
 
<a name="l00545"></a>00545         <span class="comment">// And as we took ownership back, we need to push into the cleanup stack to make sure no</span>
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   444
 
<a name="l00546"></a>00546         <span class="comment">// memory leaks take place if any leave later</span>
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diff changeset 
   445
 
<a name="l00547"></a>00547
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diff changeset 
   446
 
<a name="l00548"></a>00548         CleanupDeletePushL(encodedImageDescriptor);
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diff changeset 
   447
 
<a name="l00549"></a>00549
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diff changeset 
   448
 
<a name="l00550"></a>00550
25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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diff changeset 
   449
 
<a name="l00551"></a>00551         <span class="comment">// Just verifying the presence of some output.</span>
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diff changeset 
   450
 
<a name="l00552"></a>00552
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diff changeset 
   451
 
<a name="l00553"></a>00553         RFile file;
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diff changeset 
   452
 
<a name="l00554"></a>00554
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diff changeset 
   453
 
<a name="l00555"></a>00555         User::LeaveIfError(file.Replace(iFs, _L(<span class="stringliteral">"c:\\ICLExample\\addexifdescriptor.mbm"</span>), EFileWrite));
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diff changeset 
   454
 
<a name="l00556"></a>00556         CleanupClosePushL(file);
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diff changeset 
   455
 
<a name="l00557"></a>00557
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diff changeset 
   456
 
<a name="l00558"></a>00558         User::LeaveIfError(file.Write(*encodedImageDescriptor));
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diff changeset 
   457
 
<a name="l00559"></a>00559
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diff changeset 
   458
 
<a name="l00560"></a>00560         CleanupStack::PopAndDestroy(&amp;file);
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diff changeset 
   459
 
<a name="l00561"></a>00561
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parents:
diff changeset 
   460
 
<a name="l00562"></a>00562
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diff changeset 
   461
 
<a name="l00563"></a>00563         CleanupStack::PopAndDestroy(encodedImageDescriptor);
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diff changeset 
   462
 
<a name="l00564"></a>00564         }
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diff changeset 
   463
 
<a name="l00565"></a>00565
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diff changeset 
   464
 
<a name="l00566"></a>00566
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   465
 
<a name="l00578"></a><a class="code" href="class_c_icl_example.html#5f453ea5f17eeeadbf0558774c9947f4">00578</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#5f453ea5f17eeeadbf0558774c9947f4">CIclExample::EncodeBitmapToFileUsingOperationExtensionL</a>(<span class="keyword">const</span> TDesC&amp; aSrcFileName, <span class="keyword">const</span> TDesC&amp; aDestFileName)
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diff changeset 
   466
 
<a name="l00579"></a>00579         {
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diff changeset 
   467
 
<a name="l00580"></a>00580         <span class="comment">// Create the encoder, passing the filename. </span>
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diff changeset 
   468
 
<a name="l00581"></a>00581         <span class="comment">// If the image is not recognised or valid then the call will leave with an error       </span>
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diff changeset 
   469
 
<a name="l00582"></a>00582         CImageEncoder* jpegImageEncoder = CImageEncoder::FileNewL(iFs, aDestFileName, CImageEncoder::EOptionNone, KImageTypeJPGUid);
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diff changeset 
   470
 
<a name="l00583"></a>00583         CleanupStack::PushL(jpegImageEncoder);
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diff changeset 
   471
 
<a name="l00584"></a>00584
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diff changeset 
   472
 
<a name="l00585"></a>00585         <span class="comment">// Create a CFbsBitmap to store the source bitmap to encode</span>
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diff changeset 
   473
 
<a name="l00586"></a>00586         CFbsBitmap* sourceBitmap = <span class="keyword">new</span>(ELeave) CFbsBitmap;
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diff changeset 
   474
 
<a name="l00587"></a>00587         CleanupStack::PushL(sourceBitmap);
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diff changeset 
   475
 
<a name="l00588"></a>00588
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diff changeset 
   476
 
<a name="l00589"></a>00589         User::LeaveIfError(sourceBitmap-&gt;Load(aSrcFileName));
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diff changeset 
   477
 
<a name="l00590"></a>00590
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diff changeset 
   478
 
<a name="l00591"></a>00591         <span class="comment">// Create operation extension</span>
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diff changeset 
   479
 
<a name="l00592"></a>00592         TImageConvOperation* operation = jpegImageEncoder-&gt;OperationL();
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diff changeset 
   480
 
<a name="l00593"></a>00593
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diff changeset 
   481
 
<a name="l00594"></a>00594         <span class="comment">// Add Rotate 90degrees operation</span>
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diff changeset 
   482
 
<a name="l00595"></a>00595         operation-&gt;AddOperationL(TImageConvOperation::ERotation90DegreesClockwise);
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diff changeset 
   483
 
<a name="l00596"></a>00596         <span class="comment">// NOTE: Multiple operations can be added</span>
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diff changeset 
   484
 
<a name="l00597"></a>00597
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diff changeset 
   485
 
<a name="l00598"></a>00598         <span class="comment">// See Note 1</span>
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diff changeset 
   486
 
<a name="l00599"></a>00599         <a class="code" href="class_c_active_listener.html">CActiveListener</a>* activeListener = <a class="code" href="class_c_icl_example.html#6cb9b9dbd3a9e04e6ad4f144e6e2a8d9">CreateAndInitializeActiveListenerLC</a>();
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diff changeset 
   487
 
<a name="l00600"></a>00600
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diff changeset 
   488
 
<a name="l00601"></a>00601         <span class="comment">// Convert the image</span>
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diff changeset 
   489
 
<a name="l00602"></a>00602         jpegImageEncoder-&gt;Convert(&amp;activeListener-&gt;iStatus, *sourceBitmap, NULL);
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diff changeset 
   490
 
<a name="l00603"></a>00603
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diff changeset 
   491
 
<a name="l00604"></a>00604         <span class="comment">// See Note 2</span>
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diff changeset 
   492
 
<a name="l00605"></a>00605         CActiveScheduler::Start();
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diff changeset 
   493
 
<a name="l00606"></a>00606         User::LeaveIfError(activeListener-&gt;iStatus.Int());<span class="comment">// encode complete either display the image or report an error.</span>
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parents:
diff changeset 
   494
 
<a name="l00607"></a>00607
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diff changeset 
   495
 
<a name="l00608"></a>00608         CleanupStack::PopAndDestroy(3, jpegImageEncoder); <span class="comment">// jpegImageEncoder, sourceBitmap and activeListener</span>
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diff changeset 
   496
 
<a name="l00609"></a>00609         }
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diff changeset 
   497
 
</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Thu Jan 21 10:32:59 2010 for TB10.1 Example Applications by&nbsp;
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diff changeset 
   498
 
<a href="http://www.doxygen.org/index.html">
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diff changeset 
   499
 
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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   500
 
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25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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FCL/sftools/depl/docscontent