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<h1>examples/Multimedia/ICL/ICLExample/iclspmoexample.cpp</h1><a href="iclspmoexample_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// iclimageprocessorexample.cpp</span>
<a name="l00015"></a>00015 <span class="comment">// The code demonstrates Caps Spmo Utility functionality</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="iclexample_8h.html">iclexample.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <capsspmoutility/capsspmoutility.h></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">using namespace </span>CapsSpmoUtility;
<a name="l00028"></a>00028
<a name="l00029"></a><a class="code" href="class_c_icl_example.html#ffa7926ab6294a9cb96ca59ab6beed86">00029</a> <span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#ffa7926ab6294a9cb96ca59ab6beed86">CIclExample::GeneratingSpmoL</a>()
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="comment">// Start new spmo optimized for QVGA screen size.</span>
<a name="l00032"></a>00032 CCapsSpmo* spmo = CapsSpmoUtility::CCapsSpmoUtility::NewSpmoL(TSize(320, 240));
<a name="l00033"></a>00033 CleanupStack::PushL(spmo);
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="comment">// Generate spmo data from the input file</span>
<a name="l00036"></a>00036 spmo->SetInputL(KInputFileName);
<a name="l00037"></a>00037 spmo->GenerateFromInputL();
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="comment">// Add the generated Spmo data to the output file.</span>
<a name="l00040"></a>00040 spmo->AddToFileL(KInputWithSpmoFileName);
<a name="l00041"></a>00041
<a name="l00042"></a>00042 CleanupStack::PopAndDestroy(spmo);
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="iclspmoexample_8cpp.html#ea3cfda4f3a9f978ec759f206cf186fe">00045</a> <span class="preprocessor">#define CHUNK_SIZE 8192 </span>
<a name="l00046"></a><a class="code" href="class_c_icl_example.html#c0cb91c06d60b36516ee1113ec509bab">00046</a> <span class="preprocessor"></span><span class="keywordtype">void</span> <a class="code" href="class_c_icl_example.html#c0cb91c06d60b36516ee1113ec509bab">CIclExample::GeneratingSpmoIterativelyL</a>()
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="comment">// Start new spmo optimized for QVGA screen size.</span>
<a name="l00049"></a>00049 CCapsSpmo* spmo = CapsSpmoUtility::CCapsSpmoUtility::NewSpmoL(TSize(320, 240));
<a name="l00050"></a>00050 CleanupStack::PushL(spmo);
<a name="l00051"></a>00051
<a name="l00052"></a>00052 RFile file;
<a name="l00053"></a>00053 TInt fileSize = 0;
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="comment">// Open the file for reading.</span>
<a name="l00056"></a>00056 User::LeaveIfError(file.Open(iFs, KInputFileName, EFileRead));
<a name="l00057"></a>00057 CleanupClosePushL(file);
<a name="l00058"></a>00058
<a name="l00059"></a>00059 User::LeaveIfError(file.Size(fileSize));
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">// Prepare memory buffer for 8K chunk</span>
<a name="l00062"></a>00062 HBufC8* chunk = HBufC8::NewMaxL(<a class="code" href="iclspmoexample_8cpp.html#ea3cfda4f3a9f978ec759f206cf186fe">CHUNK_SIZE</a>);
<a name="l00063"></a>00063 TPtr8 chunkPtr = chunk->Des();
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="comment">// We must reorder the cleanupstack.</span>
<a name="l00066"></a>00066 CleanupStack::Pop(); <span class="comment">// file</span>
<a name="l00067"></a>00067 CleanupStack::PushL(chunk);
<a name="l00068"></a>00068 CleanupClosePushL(file);
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (file.SubSessionHandle())
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="comment">// Begin spmo streaming</span>
<a name="l00073"></a>00073 spmo->BeginInputStreamL();
<a name="l00074"></a>00074
<a name="l00075"></a>00075 TInt leftToRead = fileSize;
<a name="l00076"></a>00076 <span class="keywordflow">while</span> (leftToRead >= <a class="code" href="iclspmoexample_8cpp.html#ea3cfda4f3a9f978ec759f206cf186fe">CHUNK_SIZE</a>)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 leftToRead -= <a class="code" href="iclspmoexample_8cpp.html#ea3cfda4f3a9f978ec759f206cf186fe">CHUNK_SIZE</a>;
<a name="l00079"></a>00079 User::LeaveIfError(file.Read(chunkPtr, <a class="code" href="iclspmoexample_8cpp.html#ea3cfda4f3a9f978ec759f206cf186fe">CHUNK_SIZE</a>));
<a name="l00080"></a>00080 spmo->ContinueInputStreamL(chunkPtr);
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keywordflow">if</span> (leftToRead != 0)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 User::LeaveIfError(file.Read(chunkPtr, leftToRead));
<a name="l00086"></a>00086 spmo->ContinueInputStreamL(chunkPtr);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 spmo->EndInputStreamL();
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">// Generate spmo data from the processed input stream.</span>
<a name="l00093"></a>00093 spmo->GenerateFromInputL();
<a name="l00094"></a>00094
<a name="l00095"></a>00095 CleanupStack::PopAndDestroy(2); <span class="comment">// file chunk</span>
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="comment">// Get just generated spmo data and save it to a binary file.</span>
<a name="l00098"></a>00098 TPtr8 spmoData = spmo->BufferL();
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="comment">// Open the file for writing.</span>
<a name="l00101"></a>00101 User::LeaveIfError(file.Replace(iFs, KSpmoFileName, EFileWrite));
<a name="l00102"></a>00102 CleanupClosePushL(file);
<a name="l00103"></a>00103
<a name="l00104"></a>00104 User::LeaveIfError(file.Write(spmoData));
<a name="l00105"></a>00105
<a name="l00106"></a>00106 CleanupStack::PopAndDestroy(2,spmo); <span class="comment">// file spmo</span>
<a name="l00107"></a>00107 }
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