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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/mmfrawformat_8cpp_source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 16:16:55 +0100
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/Multimedia/MmfExFormatPlugin/mmfrawformat.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/Multimedia/MmfExFormatPlugin/mmfrawformat.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">//</span>
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016 <span class="comment">// MMF framework headers</span>
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<a name="l00017"></a>00017 <span class="preprocessor">#include &lt;mmffile.h&gt;</span>
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<a name="l00018"></a>00018 <span class="preprocessor">#include &lt;ecom.h&gt;</span>
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<a name="l00019"></a>00019 <span class="preprocessor">#include &lt;mmfformatimplementationuids.hrh&gt;</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;mmffourcc.h&gt;</span>
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<a name="l00021"></a>00021
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<a name="l00022"></a>00022 <span class="preprocessor">#include &quot;mmfrawformat.h&quot;</span>
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<a name="l00023"></a>00023 <span class="preprocessor">#include &quot;UIDs.hrh&quot;</span>
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<a name="l00024"></a>00024
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<a name="l00025"></a>00025 <span class="keyword">const</span> TUint KFormatDefaultFrameSize(0x1000); <span class="comment">//Set default frame size to 4 K</span>
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<a name="l00026"></a>00026 <span class="keyword">const</span> TUint KDefineIOBufferSize(0x0200); <span class="comment">//easy to read clip buffer size</span>
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<a name="l00027"></a>00027 <span class="keyword">const</span> TUint KOneSecondInMicroSeconds(1000000); <span class="comment">//1 Second</span>
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<a name="l00028"></a>00028 <span class="keyword">const</span> TUint KMono(1);
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<a name="l00029"></a>00029 <span class="keyword">const</span> TUint KStereo(2);
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<a name="l00030"></a>00030 <span class="comment">//this defines the valid sample rates for RAW</span>
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<a name="l00031"></a>00031 <span class="keyword">const</span> TUint KRawSampleRates[] = { 8000, 11025, 22050, 44100 };
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<a name="l00032"></a>00032
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<a name="l00033"></a>00033
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<a name="l00034"></a>00034 <span class="comment">//</span>
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<a name="l00035"></a>00035 <span class="comment">// CMMFRawFormatRead</span>
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<a name="l00036"></a>00036 <span class="comment">//</span>
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<a name="l00037"></a>00037
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<a name="l00038"></a>00038 <span class="comment">// Factory function</span>
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<a name="l00039"></a>00039 CMMFFormatDecode* CMMFRawFormatRead::NewL(MDataSource* aSource)
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<a name="l00040"></a>00040         {
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<a name="l00041"></a>00041         <span class="keywordflow">if</span> ((aSource-&gt;DataSourceType()==KUidMmfDescriptorSource)||
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<a name="l00042"></a>00042                         (aSource-&gt;DataSourceType()==KUidMmfFileSource))
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<a name="l00043"></a>00043                 {<span class="comment">//currently only files and descriptor MDataSources are supported</span>
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<a name="l00044"></a>00044                 <a class="code" href="class_c_m_m_f_raw_format_read.html">CMMFRawFormatRead</a>* <span class="keyword">self</span> = <span class="keyword">new</span>(ELeave)<a class="code" href="class_c_m_m_f_raw_format_read.html">CMMFRawFormatRead</a>;
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<a name="l00045"></a>00045                 CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00046"></a>00046                 <span class="keyword">self</span>-&gt;ConstructL(aSource);
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<a name="l00047"></a>00047                 CleanupStack::Pop();
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<a name="l00048"></a>00048                 <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00049"></a>00049                 }
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<a name="l00050"></a>00050         <span class="keywordflow">else</span> <span class="keywordflow">return</span> NULL;
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<a name="l00051"></a>00051         }
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<a name="l00052"></a>00052
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<a name="l00053"></a>00053 <span class="comment">// Destructor</span>
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<a name="l00054"></a>00054 CMMFRawFormatRead::~CMMFRawFormatRead()
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<a name="l00055"></a>00055         {
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<a name="l00056"></a>00056         <span class="keyword">delete</span> iBuffer;
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<a name="l00057"></a>00057         }
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<a name="l00058"></a>00058
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<a name="l00059"></a>00059 <span class="comment">// Second-phase constructor</span>
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<a name="l00060"></a>00060 <span class="keywordtype">void</span> CMMFRawFormatRead::ConstructL(MDataSource* aSource)
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<a name="l00061"></a>00061         {
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<a name="l00062"></a>00062         <span class="comment">// tell clip we&#39;re using it</span>
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<a name="l00063"></a>00063         iClip = aSource;
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<a name="l00064"></a>00064         User::LeaveIfError(iClip-&gt;SourceThreadLogon(*<span class="keyword">this</span>));
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<a name="l00065"></a>00065         iClip-&gt;SourcePrimeL();
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<a name="l00066"></a>00066         iFrameSize = KFormatDefaultFrameSize;
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<a name="l00067"></a>00067         iClipLength = (<span class="keyword">static_cast&lt;</span>CMMFClip*<span class="keyword">&gt;</span>(iClip))-&gt;Size();
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<a name="l00068"></a>00068         }
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<a name="l00069"></a>00069
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<a name="l00070"></a>00070 <span class="comment">// Implementing MDataSource</span>
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<a name="l00071"></a>00071
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<a name="l00072"></a>00072 <span class="comment">// Handle request to fill buffer with data from clip</span>
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<a name="l00073"></a>00073 <span class="keywordtype">void</span> CMMFRawFormatRead::FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer, TMediaId aMediaId )
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<a name="l00074"></a>00074         {
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<a name="l00075"></a>00075         <span class="comment">// check media id &amp; pass onto the clip</span>
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<a name="l00076"></a>00076         <span class="keywordflow">if</span> (aMediaId.iMediaType != KUidMediaTypeAudio) User::Leave(KErrNotSupported);
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<a name="l00077"></a>00077         iDataPath = aConsumer;
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<a name="l00078"></a>00078         <span class="comment">//assumes first frame is frame 1</span>
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<a name="l00079"></a>00079         TUint position = ((aBuffer-&gt;FrameNumber()-1)*iFrameSize)+iStartPosition;
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<a name="l00080"></a>00080         (<span class="keyword">static_cast&lt;</span>CMMFClip*<span class="keyword">&gt;</span>(iClip))-&gt;ReadBufferL(aBuffer, position, <span class="keyword">this</span>);
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<a name="l00081"></a>00081         <span class="comment">// notified of when buffer is full by BufferFilledL</span>
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<a name="l00082"></a>00082         }
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<a name="l00083"></a>00083
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<a name="l00084"></a>00084 <span class="comment">// creates the buffer for the source</span>
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<a name="l00085"></a>00085 <span class="comment">// This overload supplies the sink buffer, as optimal source buffer size creation may depend on this</span>
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<a name="l00086"></a>00086 CMMFBuffer* CMMFRawFormatRead::CreateSourceBufferL(TMediaId aMediaId, CMMFBuffer&amp; aSinkBuffer, TBool &amp;aReference)
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<a name="l00087"></a>00087         {
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<a name="l00088"></a>00088         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio)
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<a name="l00089"></a>00089                 {
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<a name="l00090"></a>00090                 NegotiateSourceBufferL(aSinkBuffer); <span class="comment">//sets frame size to match sink buffer</span>
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   101
 
<a name="l00091"></a>00091                 <span class="keywordflow">return</span> CreateSourceBufferL(aMediaId, aReference);
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   102
 
<a name="l00092"></a>00092                 }
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   103
 
<a name="l00093"></a>00093         <span class="keywordflow">else</span> User::Leave(KErrNotSupported);
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   104
 
<a name="l00094"></a>00094         <span class="keywordflow">return</span> NULL;
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diff changeset 
   105
 
<a name="l00095"></a>00095         }
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diff changeset 
   106
 
<a name="l00096"></a>00096
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diff changeset 
   107
 
<a name="l00097"></a>00097 <span class="comment">// creates the buffer for the source</span>
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diff changeset 
   108
 
<a name="l00098"></a>00098 CMMFBuffer* CMMFRawFormatRead::CreateSourceBufferL(TMediaId aMediaId, TBool &amp;aReference)
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diff changeset 
   109
 
<a name="l00099"></a>00099         {
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diff changeset 
   110
 
<a name="l00100"></a>00100         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio)
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diff changeset 
   111
 
<a name="l00101"></a>00101                 {
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diff changeset 
   112
 
<a name="l00102"></a>00102                 <span class="comment">// assume default frame size if haven&#39;t determined a better one</span>
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diff changeset 
   113
 
<a name="l00103"></a>00103                 <span class="keywordflow">if</span> (!iFrameSize) iFrameSize = KFormatDefaultFrameSize;
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   114
 
<a name="l00104"></a>00104                 <span class="comment">// sets aReference to false if a new CMMFBuffer is returned</span>
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   115
 
<a name="l00105"></a>00105                 aReference = EFalse;
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   116
 
<a name="l00106"></a>00106                 <span class="keywordflow">return</span> CreateSourceBufferOfSizeL(iFrameSize);
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   117
 
<a name="l00107"></a>00107                 }
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   118
 
<a name="l00108"></a>00108         <span class="keywordflow">else</span> User::Leave(KErrNotSupported);
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   119
 
<a name="l00109"></a>00109         <span class="keywordflow">return</span> NULL;
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   120
 
<a name="l00110"></a>00110         }
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diff changeset 
   121
 
<a name="l00111"></a>00111
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diff changeset 
   122
 
<a name="l00112"></a>00112 <span class="comment">// Helper function to create and zero fill a buffer of specified size</span>
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   123
 
<a name="l00113"></a>00113 CMMFDataBuffer* CMMFRawFormatRead::CreateSourceBufferOfSizeL(TUint aSize)
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   124
 
<a name="l00114"></a>00114         {
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   125
 
<a name="l00115"></a>00115         <span class="comment">//needs to create source buffer</span>
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   126
 
<a name="l00116"></a>00116         CMMFDataBuffer* buffer = CMMFDataBuffer::NewL(aSize);
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   127
 
<a name="l00117"></a>00117         buffer-&gt;Data().FillZ(aSize);
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   128
 
<a name="l00118"></a>00118         <span class="keywordflow">return</span> buffer;
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   129
 
<a name="l00119"></a>00119         }
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diff changeset 
   130
 
<a name="l00120"></a>00120
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   131
 
<a name="l00121"></a>00121 <span class="comment">// Helper function to determine best source buffer size</span>
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   132
 
<a name="l00122"></a>00122 <span class="keywordtype">void</span> CMMFRawFormatRead::NegotiateSourceBufferL(CMMFBuffer&amp; aSinkBuffer)
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diff changeset 
   133
 
<a name="l00123"></a>00123         {
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   134
 
<a name="l00124"></a>00124         <span class="comment">// if sink buffer has a fixed size use this to determine source buffer size</span>
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   135
 
<a name="l00125"></a>00125         <span class="keywordflow">if</span> (aSinkBuffer.Type() == KUidMmfDataBuffer)
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diff changeset 
   136
 
<a name="l00126"></a>00126                 {
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diff changeset 
   137
 
<a name="l00127"></a>00127                 <span class="comment">// RAW is linear data, so can set target buffer to sink buffer size</span>
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   138
 
<a name="l00128"></a>00128                 TUint sinkBufferLength = (<span class="keyword">static_cast&lt;</span>CMMFDataBuffer&amp;<span class="keyword">&gt;</span>(aSinkBuffer)).Data().MaxLength();
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diff changeset 
   139
 
<a name="l00129"></a>00129                 <span class="keywordflow">if</span> (sinkBufferLength == 0) sinkBufferLength = KFormatDefaultFrameSize;
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diff changeset 
   140
 
<a name="l00130"></a>00130                 iFrameSize = sinkBufferLength;
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diff changeset 
   141
 
<a name="l00131"></a>00131                 CalculateFrameTimeInterval();
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   142
 
<a name="l00132"></a>00132                 }
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   143
 
<a name="l00133"></a>00133         <span class="keywordflow">else</span>
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   144
 
<a name="l00134"></a>00134                 User::Leave(KErrNotSupported);
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   145
 
<a name="l00135"></a>00135         }
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diff changeset 
   146
 
<a name="l00136"></a>00136
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diff changeset 
   147
 
<a name="l00137"></a>00137 <span class="comment">// returns the codec FourCC code for the mediaId</span>
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   148
 
<a name="l00138"></a>00138 TFourCC CMMFRawFormatRead::SourceDataTypeCode(TMediaId aMediaId)
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diff changeset 
   149
 
<a name="l00139"></a>00139         {
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   150
 
<a name="l00140"></a>00140         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio) <span class="keywordflow">return</span> iFourCC;
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diff changeset 
   151
 
<a name="l00141"></a>00141         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TFourCC(); <span class="comment">//defaults to &#39;NULL&#39; fourCC</span>
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   152
 
<a name="l00142"></a>00142         }
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diff changeset 
   153
 
<a name="l00143"></a>00143
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diff changeset 
   154
 
<a name="l00144"></a>00144 <span class="comment">// sets the codec FourCC code for the mediaId</span>
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   155
 
<a name="l00145"></a>00145 TInt CMMFRawFormatRead::SetSourceDataTypeCode(TFourCC aSinkFourCC, TMediaId aMediaId)
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   156
 
<a name="l00146"></a>00146         {
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diff changeset 
   157
 
<a name="l00147"></a>00147         <span class="keywordflow">if</span> (aMediaId.iMediaType != KUidMediaTypeAudio) <span class="keywordflow">return</span> KErrNotSupported;
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   158
 
<a name="l00148"></a>00148         <span class="keywordflow">else</span> iFourCC = aSinkFourCC;
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diff changeset 
   159
 
<a name="l00149"></a>00149
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diff changeset 
   160
 
<a name="l00150"></a>00150         <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodePCM16) ||
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   161
 
<a name="l00151"></a>00151                 (iFourCC == KMMFFourCCCodePCM16B) ||
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   162
 
<a name="l00152"></a>00152                 (iFourCC == KMMFFourCCCodePCMU16))
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diff changeset 
   163
 
<a name="l00153"></a>00153                         iBitsPerSample = 16;
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diff changeset 
   164
 
<a name="l00154"></a>00154         <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodeIMAD) ||
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diff changeset 
   165
 
<a name="l00155"></a>00155                 (iFourCC == KMMFFourCCCodeIMAS))
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diff changeset 
   166
 
<a name="l00156"></a>00156                         iBitsPerSample = 4;
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diff changeset 
   167
 
<a name="l00157"></a>00157         <span class="keywordflow">else</span>
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diff changeset 
   168
 
<a name="l00158"></a>00158                         iBitsPerSample = 8; <span class="comment">//default to 8</span>
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   169
 
<a name="l00159"></a>00159         <span class="keywordflow">return</span> KErrNone;
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   170
 
<a name="l00160"></a>00160         }
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diff changeset 
   171
 
<a name="l00161"></a>00161
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diff changeset 
   172
 
<a name="l00162"></a>00162 <span class="comment">// Initiate use of the interface </span>
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   173
 
<a name="l00163"></a>00163 TInt CMMFRawFormatRead::SourceThreadLogon(MAsyncEventHandler&amp; aEventHandler)
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diff changeset 
   174
 
<a name="l00164"></a>00164         {<span class="comment">//pass through to source clip</span>
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   175
 
<a name="l00165"></a>00165         <span class="keywordflow">return</span>(iClip-&gt;SourceThreadLogon(aEventHandler));
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   176
 
<a name="l00166"></a>00166         }
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diff changeset 
   177
 
<a name="l00167"></a>00167
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diff changeset 
   178
 
<a name="l00168"></a>00168 <span class="comment">// Prepare clip</span>
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   179
 
<a name="l00169"></a>00169 <span class="keywordtype">void</span> CMMFRawFormatRead::SourcePrimeL()
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diff changeset 
   180
 
<a name="l00170"></a>00170         {
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   181
 
<a name="l00171"></a>00171         iClip-&gt;SourcePrimeL();
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   182
 
<a name="l00172"></a>00172         CalculateFrameTimeInterval();
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   183
 
<a name="l00173"></a>00173         }
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diff changeset 
   184
 
<a name="l00174"></a>00174
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   185
 
<a name="l00175"></a>00175 <span class="comment">// Play clip</span>
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   186
 
<a name="l00176"></a>00176 <span class="keywordtype">void</span> CMMFRawFormatRead::SourcePlayL()
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diff changeset 
   187
 
<a name="l00177"></a>00177         {
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diff changeset 
   188
 
<a name="l00178"></a>00178         iClip-&gt;SourcePlayL();
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   189
 
<a name="l00179"></a>00179         }
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diff changeset 
   190
 
<a name="l00180"></a>00180
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diff changeset 
   191
 
<a name="l00181"></a>00181 <span class="comment">// Pause clip</span>
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   192
 
<a name="l00182"></a>00182 <span class="keywordtype">void</span> CMMFRawFormatRead::SourcePauseL()
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diff changeset 
   193
 
<a name="l00183"></a>00183         {
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diff changeset 
   194
 
<a name="l00184"></a>00184         iClip-&gt;SourcePauseL(); <span class="comment">//propagate state change down to clip</span>
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   195
 
<a name="l00185"></a>00185         }
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diff changeset 
   196
 
<a name="l00186"></a>00186
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diff changeset 
   197
 
<a name="l00187"></a>00187 <span class="comment">// Stop clip</span>
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   198
 
<a name="l00188"></a>00188 <span class="keywordtype">void</span> CMMFRawFormatRead::SourceStopL()
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diff changeset 
   199
 
<a name="l00189"></a>00189         {
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diff changeset 
   200
 
<a name="l00190"></a>00190         iClip-&gt;SourceStopL();
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parents:
diff changeset 
   201
 
<a name="l00191"></a>00191         }
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parents:
diff changeset 
   202
 
<a name="l00192"></a>00192
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diff changeset 
   203
 
<a name="l00193"></a>00193 <span class="comment">// End use of the interface</span>
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   204
 
<a name="l00194"></a>00194 <span class="keywordtype">void</span> CMMFRawFormatRead::SourceThreadLogoff()
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   205
 
<a name="l00195"></a>00195         {
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   206
 
<a name="l00196"></a>00196         iClip-&gt;SourceThreadLogoff();
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<a name="l00197"></a>00197         }
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   208
 
<a name="l00198"></a>00198
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<a name="l00199"></a>00199 <span class="comment">// from MDataSink</span>
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<a name="l00200"></a>00200
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<a name="l00201"></a>00201 <span class="comment">// called by MDataSource to pass back full buffer to the sink</span>
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<a name="l00202"></a>00202 <span class="keywordtype">void</span> CMMFRawFormatRead::BufferFilledL(CMMFBuffer* aBuffer)
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<a name="l00203"></a>00203         {
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   214
 
<a name="l00204"></a>00204         <span class="comment">//set position</span>
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<a name="l00205"></a>00205         TTimeIntervalMicroSeconds position = <span class="comment">//assumes frame numbers begin at frame 1</span>
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<a name="l00206"></a>00206                 TTimeIntervalMicroSeconds(TInt64(aBuffer-&gt;FrameNumber()-1)*iFrameTimeInterval.Int64());
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<a name="l00207"></a>00207         aBuffer-&gt;SetTimeToPlay(position);
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<a name="l00208"></a>00208         iDataPath-&gt;BufferFilledL(aBuffer);
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<a name="l00209"></a>00209         }
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   220
 
<a name="l00210"></a>00210
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<a name="l00211"></a>00211
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<a name="l00212"></a>00212 <span class="comment">// from CMMFFormatDecode</span>
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<a name="l00213"></a>00213
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   224
 
<a name="l00214"></a>00214 <span class="comment">// returns number of streams</span>
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<a name="l00215"></a>00215 TUint CMMFRawFormatRead::Streams(TUid aMediaType)<span class="keyword"> const</span>
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<a name="l00216"></a>00216 <span class="keyword">        </span>{
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<a name="l00217"></a>00217         <span class="comment">//need to check aMediaType for audio</span>
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<a name="l00218"></a>00218         <span class="keywordflow">if</span> (aMediaType == KUidMediaTypeAudio) <span class="keywordflow">return</span> 1; <span class="comment">//raw files can only have 1 audio stream</span>
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<a name="l00219"></a>00219         <span class="keywordflow">else</span> <span class="keywordflow">return</span> 0;
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<a name="l00220"></a>00220         }
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   231
 
<a name="l00221"></a>00221
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   232
 
<a name="l00222"></a>00222 <span class="comment">// returns the time interval for one frame</span>
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<a name="l00223"></a>00223 TTimeIntervalMicroSeconds CMMFRawFormatRead::FrameTimeInterval(TMediaId aMediaId)<span class="keyword"> const</span>
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<a name="l00224"></a>00224 <span class="keyword">        </span>{
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<a name="l00225"></a>00225         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio) <span class="keywordflow">return</span> iFrameTimeInterval;
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<a name="l00226"></a>00226         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TTimeIntervalMicroSeconds(0);
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<a name="l00227"></a>00227         }
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<a name="l00228"></a>00228
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   239
 
<a name="l00229"></a>00229 <span class="comment">// returns the duration of the source clip</span>
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<a name="l00230"></a>00230 TTimeIntervalMicroSeconds CMMFRawFormatRead::Duration(TMediaId aMediaId)<span class="keyword"> const</span>
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<a name="l00231"></a>00231 <span class="keyword">        </span>{
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<a name="l00232"></a>00232         <span class="keywordflow">if</span> ((aMediaId.iMediaType == KUidMediaTypeAudio) &amp;&amp;
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<a name="l00233"></a>00233                 (iClipLength) &amp;&amp; (iSampleRate) &amp;&amp; (iBitsPerSample) &amp;&amp; (iChannels))
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<a name="l00234"></a>00234                 {<span class="comment">//we have enough values to calculate the duration</span>
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<a name="l00235"></a>00235                 TInt64 clipLength(iClipLength);
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<a name="l00236"></a>00236                 clipLength*=KOneSecondInMicroSeconds;
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<a name="l00237"></a>00237                 TTimeIntervalMicroSeconds duration = TTimeIntervalMicroSeconds(clipLength/iSampleRate);
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<a name="l00238"></a>00238                 duration = TTimeIntervalMicroSeconds(duration.Int64()/(iBitsPerSample*iChannels));
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<a name="l00239"></a>00239                 duration = TTimeIntervalMicroSeconds(duration.Int64()*8);
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<a name="l00240"></a>00240                 <span class="keywordflow">return</span> duration;
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<a name="l00241"></a>00241                 }
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<a name="l00242"></a>00242         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TTimeIntervalMicroSeconds(0);
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<a name="l00243"></a>00243         }
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<a name="l00244"></a>00244
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   255
 
<a name="l00245"></a>00245 <span class="comment">// helper function: calculates time between frames</span>
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<a name="l00246"></a>00246 <span class="keywordtype">void</span> CMMFRawFormatRead::CalculateFrameTimeInterval()
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<a name="l00247"></a>00247         {
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<a name="l00248"></a>00248         <span class="keywordflow">if</span> ((iFrameSize) &amp;&amp; (iSampleRate) &amp;&amp; (iBitsPerSample) &amp;&amp; (iChannels))
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<a name="l00249"></a>00249                 {
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<a name="l00250"></a>00250                 iFrameTimeInterval = TTimeIntervalMicroSeconds((iFrameSize*KOneSecondInMicroSeconds)/iSampleRate);
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<a name="l00251"></a>00251                 iFrameTimeInterval =
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<a name="l00252"></a>00252                         TTimeIntervalMicroSeconds(iFrameTimeInterval.Int64()/(iBitsPerSample*iChannels));
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<a name="l00253"></a>00253                 iFrameTimeInterval = TTimeIntervalMicroSeconds(iFrameTimeInterval.Int64()*8);
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<a name="l00254"></a>00254                 }
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<a name="l00255"></a>00255         }
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<a name="l00256"></a>00256
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   267
 
<a name="l00257"></a>00257 <span class="comment">// called by sink to suggest a source buffer size</span>
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<a name="l00258"></a>00258 <span class="keywordtype">void</span> CMMFRawFormatRead::SuggestSourceBufferSize(TUint aSuggestedBufferSize)
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<a name="l00259"></a>00259         {
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<a name="l00260"></a>00260         iFrameSize = aSuggestedBufferSize; <span class="comment">//set source format frame size to buffer size suggested by sink</span>
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<a name="l00261"></a>00261         CalculateFrameTimeInterval();
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<a name="l00262"></a>00262         }
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<a name="l00263"></a>00263
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<a name="l00264"></a>00264 <span class="comment">// set the number of channels</span>
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<a name="l00265"></a>00265 TInt CMMFRawFormatRead::SetNumChannels(TUint aChannels)
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<a name="l00266"></a>00266         {
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<a name="l00267"></a>00267         TInt error = KErrNone;
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<a name="l00268"></a>00268         <span class="keywordflow">if</span> ((aChannels ==  KMono)||(aChannels == KStereo)) iChannels = aChannels;
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<a name="l00269"></a>00269         <span class="keywordflow">else</span> error = KErrNotSupported; <span class="comment">//only alow one or two channels</span>
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<a name="l00270"></a>00270         <span class="keywordflow">return</span> error;
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<a name="l00271"></a>00271         }
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<a name="l00272"></a>00272
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<a name="l00273"></a>00273 <span class="comment">// set the sample rate</span>
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<a name="l00274"></a>00274 TInt CMMFRawFormatRead::SetSampleRate(TUint aSampleRate)
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<a name="l00275"></a>00275         {
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<a name="l00276"></a>00276         TInt status = KErrNotSupported;
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<a name="l00277"></a>00277         <span class="comment">//we&#39;ll iterate through the valid sample table</span>
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<a name="l00278"></a>00278         TInt i = <span class="keyword">sizeof</span>(KRawSampleRates) / <span class="keyword">sizeof</span>(TUint);
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<a name="l00279"></a>00279
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<a name="l00280"></a>00280         <span class="keywordflow">while</span> ((i--) &amp;&amp; (status != KErrNone))
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<a name="l00281"></a>00281                 {
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<a name="l00282"></a>00282                 <span class="keywordflow">if</span> (aSampleRate == KRawSampleRates[i])
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<a name="l00283"></a>00283                         {
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<a name="l00284"></a>00284                         iSampleRate = aSampleRate;
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<a name="l00285"></a>00285                         status = KErrNone;
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<a name="l00286"></a>00286                         }
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<a name="l00287"></a>00287                 }
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<a name="l00288"></a>00288         <span class="keywordflow">return</span> status;
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<a name="l00289"></a>00289         }
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<a name="l00290"></a>00290
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<a name="l00291"></a>00291 <span class="comment">// helper function to read from clip</span>
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<a name="l00292"></a>00292 <span class="keywordtype">void</span> CMMFRawFormatRead::DoReadL(TInt aReadPosition)
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<a name="l00293"></a>00293         {
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<a name="l00294"></a>00294         STATIC_CAST(CMMFClip*,iClip)-&gt;ReadBufferL(iBuffer,aReadPosition);
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<a name="l00295"></a>00295         }
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<a name="l00296"></a>00296
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<a name="l00297"></a>00297 <span class="comment">// get the supported sample rates</span>
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<a name="l00298"></a>00298 <span class="keywordtype">void</span> CMMFRawFormatRead::GetSupportedSampleRatesL(RArray&lt;TUint&gt;&amp; aSampleRates)
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<a name="l00299"></a>00299         {
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<a name="l00300"></a>00300         aSampleRates.Reset();
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<a name="l00301"></a>00301
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parents:
diff changeset 
   312
 
<a name="l00302"></a>00302         <span class="comment">// Iterate through the valid sample table and append each value to aSampleRates</span>
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   313
 
<a name="l00303"></a>00303         TInt i = <span class="keyword">sizeof</span>(KRawSampleRates) / <span class="keyword">sizeof</span>(TUint);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   314
 
<a name="l00304"></a>00304
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   315
 
<a name="l00305"></a>00305         <span class="keywordflow">while</span> (i--)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   316
 
<a name="l00306"></a>00306                 {
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   317
 
<a name="l00307"></a>00307                 User::LeaveIfError(aSampleRates.Append(KRawSampleRates[i]));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   318
 
<a name="l00308"></a>00308                 }
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   319
 
<a name="l00309"></a>00309         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   320
 
<a name="l00310"></a>00310
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   321
 
<a name="l00311"></a>00311 <span class="comment">// get the supported channel number options</span>
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   322
 
<a name="l00312"></a>00312 <span class="keywordtype">void</span> CMMFRawFormatRead::GetSupportedNumChannelsL(RArray&lt;TUint&gt;&amp; aNumChannels)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   323
 
<a name="l00313"></a>00313         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   324
 
<a name="l00314"></a>00314         aNumChannels.Reset();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   325
 
<a name="l00315"></a>00315         User::LeaveIfError(aNumChannels.Append(KMono));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   326
 
<a name="l00316"></a>00316         User::LeaveIfError(aNumChannels.Append(KStereo));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   327
 
<a name="l00317"></a>00317         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   328
 
<a name="l00318"></a>00318
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   329
 
<a name="l00319"></a>00319 <span class="comment">// get the supported codecs</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   330
 
<a name="l00320"></a>00320 <span class="keywordtype">void</span> CMMFRawFormatRead::GetSupportedDataTypesL(TMediaId aMediaId, RArray&lt;TFourCC&gt;&amp; aDataTypes)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   331
 
<a name="l00321"></a>00321         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   332
 
<a name="l00322"></a>00322         <span class="keywordflow">if</span> (aMediaId.iMediaType != KUidMediaTypeAudio)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   333
 
<a name="l00323"></a>00323                 User::Leave(KErrNotSupported);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   334
 
<a name="l00324"></a>00324         aDataTypes.Reset();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   335
 
<a name="l00325"></a>00325         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCM16));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   336
 
<a name="l00326"></a>00326         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCM16B));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   337
 
<a name="l00327"></a>00327         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCMU16));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   338
 
<a name="l00328"></a>00328         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodeIMAD));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   339
 
<a name="l00329"></a>00329         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodeIMAS));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   340
 
<a name="l00330"></a>00330         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   341
 
<a name="l00331"></a>00331
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   342
 
<a name="l00332"></a>00332
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   343
 
<a name="l00333"></a>00333 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   344
 
<a name="l00334"></a>00334 <span class="comment">// CMMFRawFormatWrite</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   345
 
<a name="l00335"></a>00335 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   346
 
<a name="l00336"></a>00336
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   347
 
<a name="l00337"></a>00337 <span class="comment">// Factory function</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   348
 
<a name="l00338"></a>00338 CMMFFormatEncode* CMMFRawFormatWrite::NewL(MDataSink* aSink)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   349
 
<a name="l00339"></a>00339         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   350
 
<a name="l00340"></a>00340         <span class="keywordflow">if</span> ((aSink-&gt;DataSinkType()==KUidMmfDescriptorSink)||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   351
 
<a name="l00341"></a>00341                         (aSink-&gt;DataSinkType()==KUidMmfFileSink))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   352
 
<a name="l00342"></a>00342                 {<span class="comment">//currently only files and descriptor MDataSources are supported</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   353
 
<a name="l00343"></a>00343                 <a class="code" href="class_c_m_m_f_raw_format_write.html">CMMFRawFormatWrite</a>* <span class="keyword">self</span> = <span class="keyword">new</span>(ELeave)<a class="code" href="class_c_m_m_f_raw_format_write.html">CMMFRawFormatWrite</a>;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   354
 
<a name="l00344"></a>00344                 CleanupStack::PushL(<span class="keyword">self</span>);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   355
 
<a name="l00345"></a>00345                 <span class="keyword">self</span>-&gt;ConstructL(aSink);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   356
 
<a name="l00346"></a>00346                 CleanupStack::Pop();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   357
 
<a name="l00347"></a>00347                 <span class="keywordflow">return</span> STATIC_CAST(CMMFFormatEncode*, <span class="keyword">self</span>);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   358
 
<a name="l00348"></a>00348                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   359
 
<a name="l00349"></a>00349         <span class="keywordflow">else</span> <span class="keywordflow">return</span> NULL;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   360
 
<a name="l00350"></a>00350         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   361
 
<a name="l00351"></a>00351
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   362
 
<a name="l00352"></a>00352 <span class="comment">// destructor</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   363
 
<a name="l00353"></a>00353 CMMFRawFormatWrite::~CMMFRawFormatWrite()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   364
 
<a name="l00354"></a>00354         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   365
 
<a name="l00355"></a>00355         <span class="keyword">delete</span> iBuffer;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   366
 
<a name="l00356"></a>00356         <span class="keyword">delete</span> iConvertBuffer;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   367
 
<a name="l00357"></a>00357         <span class="keyword">delete</span> iChannelAndSampleRateConverterFactory;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   368
 
<a name="l00358"></a>00358         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   369
 
<a name="l00359"></a>00359
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   370
 
<a name="l00360"></a>00360 <span class="comment">// second-phase construction    </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   371
 
<a name="l00361"></a>00361 <span class="keywordtype">void</span> CMMFRawFormatWrite::ConstructL(MDataSink* aSink)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   372
 
<a name="l00362"></a>00362         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   373
 
<a name="l00363"></a>00363         iClip = aSink;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   374
 
<a name="l00364"></a>00364         <span class="comment">//first need to check if sink clip already exists to get settings.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   375
 
<a name="l00365"></a>00365         User::LeaveIfError(iClip-&gt;SinkThreadLogon(*<span class="keyword">this</span>));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   376
 
<a name="l00366"></a>00366         iClip-&gt;SinkPrimeL();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   377
 
<a name="l00367"></a>00367         iBuffer = CreateSinkBufferOfSizeL(KDefineIOBufferSize); <span class="comment">//512 easiest file size to read</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   378
 
<a name="l00368"></a>00368         DoReadL(0);<span class="comment">//read from beginning of clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   379
 
<a name="l00369"></a>00369         <span class="keywordflow">if</span> (iBuffer-&gt;Data().Size()&gt; 0)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   380
 
<a name="l00370"></a>00370                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   381
 
<a name="l00371"></a>00371                 iClipAlreadyExists = ETrue;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   382
 
<a name="l00372"></a>00372                 <span class="comment">//There is no header, so data size is the same as the clip size in this case.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   383
 
<a name="l00373"></a>00373                 iDataSize = iClipLength = STATIC_CAST(CMMFClip*,iClip)-&gt;Size();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   384
 
<a name="l00374"></a>00374                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   385
 
<a name="l00375"></a>00375         iFrameSize = KFormatDefaultFrameSize;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   386
 
<a name="l00376"></a>00376         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   387
 
<a name="l00377"></a>00377
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   388
 
<a name="l00378"></a>00378 <span class="comment">// from MDataSink</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   389
 
<a name="l00379"></a>00379
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   390
 
<a name="l00380"></a>00380 <span class="comment">// sink thread attaches</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   391
 
<a name="l00381"></a>00381 TInt CMMFRawFormatWrite::SinkThreadLogon(MAsyncEventHandler&amp; aEventHandler)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   392
 
<a name="l00382"></a>00382         {<span class="comment">//pass through to sink clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   393
 
<a name="l00383"></a>00383         <span class="keywordflow">return</span>(iClip-&gt;SinkThreadLogon(aEventHandler));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   394
 
<a name="l00384"></a>00384         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   395
 
<a name="l00385"></a>00385
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   396
 
<a name="l00386"></a>00386 <span class="comment">// helper function: calculates time between frames</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   397
 
<a name="l00387"></a>00387 <span class="keywordtype">void</span> CMMFRawFormatWrite::CalculateFrameTimeInterval()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   398
 
<a name="l00388"></a>00388         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   399
 
<a name="l00389"></a>00389         <span class="keywordflow">if</span> ((iFrameSize) &amp;&amp; (iSampleRate) &amp;&amp; (iBitsPerSample) &amp;&amp; (iChannels))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   400
 
<a name="l00390"></a>00390                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   401
 
<a name="l00391"></a>00391                 iFrameTimeInterval = TTimeIntervalMicroSeconds((iFrameSize*KOneSecondInMicroSeconds)/iSampleRate);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   402
 
<a name="l00392"></a>00392                 iFrameTimeInterval =
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   403
 
<a name="l00393"></a>00393                         TTimeIntervalMicroSeconds((iFrameTimeInterval.Int64())/(iBitsPerSample*iChannels));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   404
 
<a name="l00394"></a>00394                 iFrameTimeInterval = TTimeIntervalMicroSeconds(iFrameTimeInterval.Int64()*8);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   405
 
<a name="l00395"></a>00395                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   406
 
<a name="l00396"></a>00396         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   407
 
<a name="l00397"></a>00397
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   408
 
<a name="l00398"></a>00398 <span class="comment">// called if sink setup depends on source</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   409
 
<a name="l00399"></a>00399 <span class="keywordtype">void</span> CMMFRawFormatWrite::Negotiate(MDataSource&amp; aSource)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   410
 
<a name="l00400"></a>00400         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   411
 
<a name="l00401"></a>00401         <span class="keywordflow">if</span> (aSource.DataSourceType() == KUidMmfAudioInput)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   412
 
<a name="l00402"></a>00402                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   413
 
<a name="l00403"></a>00403                 <span class="comment">// could query the audio capabilities from DevSound for the settings below</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   414
 
<a name="l00404"></a>00404                 iSourceSampleRate = 8000; <span class="comment">// assume 8KHz for now</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   415
 
<a name="l00405"></a>00405                 iSourceChannels = 1; <span class="comment">//assume mono</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   416
 
<a name="l00406"></a>00406                 iSourceFourCC.Set(KMMFFourCCCodePCM16); <span class="comment">//16 bit PCM</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   417
 
<a name="l00407"></a>00407                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   418
 
<a name="l00408"></a>00408         <span class="keywordflow">else</span> <span class="keywordflow">if</span> (aSource.DataSourceType() == KUidMmfFormatDecode)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   419
 
<a name="l00409"></a>00409                 {<span class="comment">//source is a clip so for now set sink settings to match source</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   420
 
<a name="l00410"></a>00410                 iSourceSampleRate = ((CMMFFormatDecode&amp;)aSource).SampleRate();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   421
 
<a name="l00411"></a>00411                 iSourceChannels = ((CMMFFormatDecode&amp;)aSource).NumChannels();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   422
 
<a name="l00412"></a>00412                 iSourceFourCC.Set(aSource.SourceDataTypeCode(TMediaId(KUidMediaTypeAudio)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   423
 
<a name="l00413"></a>00413                 iSourceWillSampleConvert = STATIC_CAST(CMMFFormatDecode&amp;, aSource).SourceSampleConvert();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   424
 
<a name="l00414"></a>00414                 ((CMMFFormatDecode&amp;)aSource).SuggestSourceBufferSize(iFrameSize); <span class="comment">//for now suggest format src takes same buf size as sink??</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   425
 
<a name="l00415"></a>00415                 <span class="comment">//make the start position the end of the clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   426
 
<a name="l00416"></a>00416                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   427
 
<a name="l00417"></a>00417         <span class="keywordflow">else</span> <span class="keywordflow">return</span>;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   428
 
<a name="l00418"></a>00418         <span class="comment">//set default sink parameters to be the same as the source</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   429
 
<a name="l00419"></a>00419         <span class="keywordflow">if</span> (iClipAlreadyExists) iStartPosition = iClipLength;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   430
 
<a name="l00420"></a>00420         <span class="keywordflow">if</span> (!iSampleRate) iSampleRate = iSourceSampleRate; <span class="comment">//might have already been set by custom command</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   431
 
<a name="l00421"></a>00421         <span class="keywordflow">if</span> (!iChannels) iChannels = iSourceChannels;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   432
 
<a name="l00422"></a>00422         <span class="keywordflow">if</span> (!iBitsPerSample)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   433
 
<a name="l00423"></a>00423                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   434
 
<a name="l00424"></a>00424                 iFourCC.Set(iSourceFourCC);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   435
 
<a name="l00425"></a>00425                 <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodePCM16) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   436
 
<a name="l00426"></a>00426                         (iFourCC == KMMFFourCCCodePCM16B) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   437
 
<a name="l00427"></a>00427                         (iFourCC == KMMFFourCCCodePCMU16))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   438
 
<a name="l00428"></a>00428                                 iBitsPerSample = 16;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   439
 
<a name="l00429"></a>00429                 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodeIMAD) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   440
 
<a name="l00430"></a>00430                         (iFourCC == KMMFFourCCCodeIMAS))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   441
 
<a name="l00431"></a>00431                                 iBitsPerSample = 4;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   442
 
<a name="l00432"></a>00432                 <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   443
 
<a name="l00433"></a>00433                                 iBitsPerSample = 8; <span class="comment">//default to 8</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   444
 
<a name="l00434"></a>00434                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   445
 
<a name="l00435"></a>00435         CalculateFrameTimeInterval();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   446
 
<a name="l00436"></a>00436         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   447
 
<a name="l00437"></a>00437
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   448
 
<a name="l00438"></a>00438 <span class="comment">// Prime the sink to be accessed</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   449
 
<a name="l00439"></a>00439 <span class="keywordtype">void</span> CMMFRawFormatWrite::SinkPrimeL()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   450
 
<a name="l00440"></a>00440         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   451
 
<a name="l00441"></a>00441         iClip-&gt;SinkPrimeL(); <span class="comment">//propagate state change down to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   452
 
<a name="l00442"></a>00442         CalculateFrameTimeInterval();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   453
 
<a name="l00443"></a>00443         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   454
 
<a name="l00444"></a>00444
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   455
 
<a name="l00445"></a>00445 <span class="comment">// Play the sink</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   456
 
<a name="l00446"></a>00446 <span class="keywordtype">void</span> CMMFRawFormatWrite::SinkPlayL()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   457
 
<a name="l00447"></a>00447         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   458
 
<a name="l00448"></a>00448         iClip-&gt;SinkPlayL(); <span class="comment">//propagate state change down to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   459
 
<a name="l00449"></a>00449         <span class="keywordflow">if</span> ((iChannels != iSourceChannels) || (iSampleRate != iSourceSampleRate) &amp;&amp; (!iSourceWillSampleConvert))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   460
 
<a name="l00450"></a>00450                 {<span class="comment">//the source channels &amp; sample rate don&#39;t match the formats - therefore need to do a conversion </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   461
 
<a name="l00451"></a>00451                 <span class="comment">//currently only pcm16 is supported so return with an error if format not pcm16</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   462
 
<a name="l00452"></a>00452                 <span class="keywordflow">if</span> (iFourCC != KMMFFourCCCodePCM16) User::Leave(KErrNotSupported);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   463
 
<a name="l00453"></a>00453                 iChannelAndSampleRateConverterFactory
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   464
 
<a name="l00454"></a>00454                         = <span class="keyword">new</span>(ELeave)CMMFChannelAndSampleRateConverterFactory;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   465
 
<a name="l00455"></a>00455                 iChannelAndSampleRateConverter =
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   466
 
<a name="l00456"></a>00456                         iChannelAndSampleRateConverterFactory-&gt;CreateConverterL( iSourceSampleRate, iSourceChannels,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   467
 
<a name="l00457"></a>00457                                                                                                                                         iSampleRate, iChannels);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   468
 
<a name="l00458"></a>00458                 <span class="comment">//need to create an intermediate buffer in which to place the converted data</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   469
 
<a name="l00459"></a>00459                 TUint convertedBufferFrameSize = (iFrameSize*iChannels)/iSourceChannels;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   470
 
<a name="l00460"></a>00460                 iConvertBuffer = CreateSinkBufferOfSizeL(convertedBufferFrameSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   471
 
<a name="l00461"></a>00461                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   472
 
<a name="l00462"></a>00462         iFileHasChanged = ETrue; <span class="comment">//file will change if we start playing to it</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   473
 
<a name="l00463"></a>00463         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   474
 
<a name="l00464"></a>00464
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   475
 
<a name="l00465"></a>00465 <span class="comment">// Pause the sink</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   476
 
<a name="l00466"></a>00466 <span class="keywordtype">void</span> CMMFRawFormatWrite::SinkPauseL()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   477
 
<a name="l00467"></a>00467         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   478
 
<a name="l00468"></a>00468         iClip-&gt;SinkPauseL(); <span class="comment">//propagate state change down to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   479
 
<a name="l00469"></a>00469         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   480
 
<a name="l00470"></a>00470
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   481
 
<a name="l00471"></a>00471 <span class="comment">// Stop the sink</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   482
 
<a name="l00472"></a>00472 <span class="keywordtype">void</span> CMMFRawFormatWrite::SinkStopL()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   483
 
<a name="l00473"></a>00473         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   484
 
<a name="l00474"></a>00474         iClip-&gt;SinkStopL(); <span class="comment">//propagate state change down to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   485
 
<a name="l00475"></a>00475         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   486
 
<a name="l00476"></a>00476
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   487
 
<a name="l00477"></a>00477 <span class="comment">// Detach from the sink</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   488
 
<a name="l00478"></a>00478 <span class="keywordtype">void</span> CMMFRawFormatWrite::SinkThreadLogoff()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   489
 
<a name="l00479"></a>00479         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   490
 
<a name="l00480"></a>00480         iClip-&gt;SinkThreadLogoff(); <span class="comment">//propagate down to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   491
 
<a name="l00481"></a>00481         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   492
 
<a name="l00482"></a>00482
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   493
 
<a name="l00483"></a>00483 <span class="comment">// Called by the CMMFDataPath to add a buffer to a clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   494
 
<a name="l00484"></a>00484 <span class="keywordtype">void</span> CMMFRawFormatWrite::EmptyBufferL(CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   495
 
<a name="l00485"></a>00485         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   496
 
<a name="l00486"></a>00486         <span class="comment">//since raw always contains linear audio the sink buffer size can set the source buffer size</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   497
 
<a name="l00487"></a>00487
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   498
 
<a name="l00488"></a>00488         <span class="comment">//check media id &amp;pass onto clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   499
 
<a name="l00489"></a>00489         <span class="keywordflow">if</span> (aMediaId.iMediaType!=KUidMediaTypeAudio) User::Leave(KErrNotSupported);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   500
 
<a name="l00490"></a>00490         iDataPath = aSupplier;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   501
 
<a name="l00491"></a>00491
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   502
 
<a name="l00492"></a>00492         <span class="comment">// Check we haven&#39;t exceeded any set maximum on our clip length</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   503
 
<a name="l00493"></a>00493         <span class="keywordflow">if</span> (iMaximumClipSize &gt; 0)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   504
 
<a name="l00494"></a>00494                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   505
 
<a name="l00495"></a>00495                 <span class="comment">// Find the current clip size</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   506
 
<a name="l00496"></a>00496                 TInt currentClipLength = STATIC_CAST(CMMFClip*, iClip)-&gt;Size();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   507
 
<a name="l00497"></a>00497                 TInt bufferSize = aBuffer-&gt;BufferSize();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   508
 
<a name="l00498"></a>00498                 <span class="keywordflow">if</span> ((currentClipLength + bufferSize) &gt;= iMaximumClipSize)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   509
 
<a name="l00499"></a>00499                         User::Leave(KErrEof);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   510
 
<a name="l00500"></a>00500                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   511
 
<a name="l00501"></a>00501
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   512
 
<a name="l00502"></a>00502         <span class="comment">//assumes first frame is frame 1</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   513
 
<a name="l00503"></a>00503         iBufferToEmpty = aBuffer; <span class="comment">//save this so it can be returned to datapath</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   514
 
<a name="l00504"></a>00504         TInt position = ((aBuffer-&gt;FrameNumber()-1)*iFrameSize)+iStartPosition;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   515
 
<a name="l00505"></a>00505         <span class="keywordflow">if</span> (position &lt; (TInt)iStartPosition) position = iStartPosition; <span class="comment">//can&#39;t write before start of header</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   516
 
<a name="l00506"></a>00506         <span class="keywordflow">if</span> ((iChannelAndSampleRateConverter) &amp;&amp; (!iSourceWillSampleConvert))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   517
 
<a name="l00507"></a>00507                 {<span class="comment">//need to perform channel &amp; sample rate conversion before writing to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   518
 
<a name="l00508"></a>00508                 iFrameSize = iChannelAndSampleRateConverter-&gt;Convert(*(CMMFDataBuffer*)aBuffer,*iConvertBuffer);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   519
 
<a name="l00509"></a>00509                 STATIC_CAST(CMMFClip*,iClip)-&gt;WriteBufferL(iConvertBuffer, position, <span class="keyword">this</span>);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   520
 
<a name="l00510"></a>00510                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   521
 
<a name="l00511"></a>00511         <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   522
 
<a name="l00512"></a>00512                 {<span class="comment">//no need to convert the data</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   523
 
<a name="l00513"></a>00513                 STATIC_CAST(CMMFClip*,iClip)-&gt;WriteBufferL(aBuffer, position, <span class="keyword">this</span>);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   524
 
<a name="l00514"></a>00514                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   525
 
<a name="l00515"></a>00515         iPos = position; <span class="comment">//save current write position</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   526
 
<a name="l00516"></a>00516         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   527
 
<a name="l00517"></a>00517
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   528
 
<a name="l00518"></a>00518 <span class="comment">// helper function to create buffer of specficed size</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   529
 
<a name="l00519"></a>00519 CMMFDataBuffer* CMMFRawFormatWrite::CreateSinkBufferOfSizeL(TUint aSize)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   530
 
<a name="l00520"></a>00520         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   531
 
<a name="l00521"></a>00521         <span class="comment">//needs to create source buffer</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   532
 
<a name="l00522"></a>00522         CMMFDataBuffer* buffer = CMMFDataBuffer::NewL(aSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   533
 
<a name="l00523"></a>00523         buffer-&gt;Data().FillZ(aSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   534
 
<a name="l00524"></a>00524         iBufferCreated = ETrue;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   535
 
<a name="l00525"></a>00525         <span class="keywordflow">return</span> buffer;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   536
 
<a name="l00526"></a>00526         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   537
 
<a name="l00527"></a>00527
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   538
 
<a name="l00528"></a>00528 <span class="comment">// create buffer to receive data</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   539
 
<a name="l00529"></a>00529 CMMFBuffer* CMMFRawFormatWrite::CreateSinkBufferL(TMediaId aMediaId, TBool &amp;aReference)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   540
 
<a name="l00530"></a>00530         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   541
 
<a name="l00531"></a>00531         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   542
 
<a name="l00532"></a>00532                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   543
 
<a name="l00533"></a>00533                 <span class="keywordflow">if</span> (!iFrameSize) iFrameSize = KFormatDefaultFrameSize;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   544
 
<a name="l00534"></a>00534                 aReference = EFalse;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   545
 
<a name="l00535"></a>00535                 <span class="keywordflow">return</span> CreateSinkBufferOfSizeL(iFrameSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   546
 
<a name="l00536"></a>00536                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   547
 
<a name="l00537"></a>00537         <span class="keywordflow">else</span> User::Leave(KErrNotSupported);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   548
 
<a name="l00538"></a>00538         <span class="keywordflow">return</span> NULL;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   549
 
<a name="l00539"></a>00539         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   550
 
<a name="l00540"></a>00540
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   551
 
<a name="l00541"></a>00541 <span class="comment">// gets the codec type</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   552
 
<a name="l00542"></a>00542 TFourCC CMMFRawFormatWrite::SinkDataTypeCode(TMediaId aMediaId)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   553
 
<a name="l00543"></a>00543         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   554
 
<a name="l00544"></a>00544         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio) <span class="keywordflow">return</span> iFourCC;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   555
 
<a name="l00545"></a>00545         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TFourCC(); <span class="comment">//defaults to &#39;NULL&#39; fourCC</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   556
 
<a name="l00546"></a>00546         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   557
 
<a name="l00547"></a>00547
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   558
 
<a name="l00548"></a>00548 <span class="comment">// sets the codec type</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   559
 
<a name="l00549"></a>00549 TInt CMMFRawFormatWrite::SetSinkDataTypeCode(TFourCC aSinkFourCC, TMediaId aMediaId)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   560
 
<a name="l00550"></a>00550         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   561
 
<a name="l00551"></a>00551         <span class="keywordflow">if</span> (aMediaId.iMediaType != KUidMediaTypeAudio) <span class="keywordflow">return</span> KErrNotSupported;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   562
 
<a name="l00552"></a>00552         <span class="keywordflow">else</span> iFourCC = aSinkFourCC;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   563
 
<a name="l00553"></a>00553
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   564
 
<a name="l00554"></a>00554         <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodePCM16) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   565
 
<a name="l00555"></a>00555                 (iFourCC == KMMFFourCCCodePCM16B) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   566
 
<a name="l00556"></a>00556                 (iFourCC == KMMFFourCCCodePCMU16))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   567
 
<a name="l00557"></a>00557                         iBitsPerSample = 16;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   568
 
<a name="l00558"></a>00558         <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((iFourCC == KMMFFourCCCodeIMAD) ||
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   569
 
<a name="l00559"></a>00559                 (iFourCC == KMMFFourCCCodeIMAS))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   570
 
<a name="l00560"></a>00560                         iBitsPerSample = 4;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   571
 
<a name="l00561"></a>00561         <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   572
 
<a name="l00562"></a>00562                         iBitsPerSample = 8; <span class="comment">//default to 8</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   573
 
<a name="l00563"></a>00563
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   574
 
<a name="l00564"></a>00564         <span class="keywordflow">return</span> KErrNone;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   575
 
<a name="l00565"></a>00565         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   576
 
<a name="l00566"></a>00566
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   577
 
<a name="l00567"></a>00567 <span class="comment">// helper function to read data from clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   578
 
<a name="l00568"></a>00568 <span class="keywordtype">void</span> CMMFRawFormatWrite::DoReadL(TInt aReadPosition)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   579
 
<a name="l00569"></a>00569         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   580
 
<a name="l00570"></a>00570         STATIC_CAST(CMMFClip*,iClip)-&gt;ReadBufferL(iBuffer,aReadPosition);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   581
 
<a name="l00571"></a>00571         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   582
 
<a name="l00572"></a>00572
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   583
 
<a name="l00573"></a>00573 <span class="comment">// helper function to write data to clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   584
 
<a name="l00574"></a>00574 <span class="keywordtype">void</span> CMMFRawFormatWrite::DoWriteL(TInt aWritePosition)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   585
 
<a name="l00575"></a>00575         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   586
 
<a name="l00576"></a>00576         STATIC_CAST(CMMFClip*,iClip)-&gt;WriteBufferL(iBuffer,aWritePosition);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   587
 
<a name="l00577"></a>00577         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   588
 
<a name="l00578"></a>00578
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   589
 
<a name="l00579"></a>00579
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   590
 
<a name="l00580"></a>00580 <span class="comment">// from MDataSource</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   591
 
<a name="l00581"></a>00581
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   592
 
<a name="l00582"></a>00582 <span class="comment">// called by MDataSink to pass back emptied buffer to the source</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   593
 
<a name="l00583"></a>00583 <span class="keywordtype">void</span> CMMFRawFormatWrite::BufferEmptiedL(CMMFBuffer* aBuffer)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   594
 
<a name="l00584"></a>00584         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   595
 
<a name="l00585"></a>00585         iDataSize+=aBuffer-&gt;BufferSize(); <span class="comment">//total bytes written</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   596
 
<a name="l00586"></a>00586         iPos += aBuffer-&gt;BufferSize(); <span class="comment">//total bytes written so far - iPos is not always = iDataSize due to repositions</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   597
 
<a name="l00587"></a>00587         <span class="keywordflow">if</span> (iMaxPos &lt; iPos) iMaxPos = iPos; <span class="comment">//need iMaxPos incase we write data then repos to an earlier pos in the clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   598
 
<a name="l00588"></a>00588         <span class="keywordflow">if</span> (iBufferToEmpty != aBuffer) iDataPath-&gt;BufferEmptiedL(iBufferToEmpty); <span class="comment">//need to return same buffer</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   599
 
<a name="l00589"></a>00589         <span class="keywordflow">else</span> iDataPath-&gt;BufferEmptiedL(aBuffer);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   600
 
<a name="l00590"></a>00590         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   601
 
<a name="l00591"></a>00591
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   602
 
<a name="l00592"></a>00592
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   603
 
<a name="l00593"></a>00593 <span class="comment">// from CMMFFormatEncode</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   604
 
<a name="l00594"></a>00594
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   605
 
<a name="l00595"></a>00595 <span class="comment">// set the number of channels </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   606
 
<a name="l00596"></a>00596 TInt CMMFRawFormatWrite::SetNumChannels(TUint aChannels)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   607
 
<a name="l00597"></a>00597         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   608
 
<a name="l00598"></a>00598         TInt error = KErrNone;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   609
 
<a name="l00599"></a>00599         <span class="keywordflow">if</span> ((aChannels ==  KMono)||(aChannels == KStereo)) iChannels = aChannels;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   610
 
<a name="l00600"></a>00600         <span class="keywordflow">else</span> error = KErrNotSupported; <span class="comment">//only alow one or two channels</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   611
 
<a name="l00601"></a>00601         <span class="keywordflow">return</span> error;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   612
 
<a name="l00602"></a>00602         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   613
 
<a name="l00603"></a>00603
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   614
 
<a name="l00604"></a>00604 <span class="comment">// set the sample rate</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   615
 
<a name="l00605"></a>00605 TInt CMMFRawFormatWrite::SetSampleRate(TUint aSampleRate)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   616
 
<a name="l00606"></a>00606         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   617
 
<a name="l00607"></a>00607         TInt status = KErrNotSupported;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   618
 
<a name="l00608"></a>00608         <span class="comment">//we&#39;ll iterate through the valid sample table</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   619
 
<a name="l00609"></a>00609         TInt i = <span class="keyword">sizeof</span>(KRawSampleRates) / <span class="keyword">sizeof</span>(TUint);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   620
 
<a name="l00610"></a>00610
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   621
 
<a name="l00611"></a>00611         <span class="keywordflow">while</span> ((i--) &amp;&amp; (status != KErrNone))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   622
 
<a name="l00612"></a>00612                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   623
 
<a name="l00613"></a>00613                 <span class="keywordflow">if</span> (aSampleRate == KRawSampleRates[i])
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   624
 
<a name="l00614"></a>00614                         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   625
 
<a name="l00615"></a>00615                         iSampleRate = aSampleRate;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   626
 
<a name="l00616"></a>00616                         status = KErrNone;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   627
 
<a name="l00617"></a>00617                         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   628
 
<a name="l00618"></a>00618                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   629
 
<a name="l00619"></a>00619         <span class="keywordflow">return</span> status;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   630
 
<a name="l00620"></a>00620         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   631
 
<a name="l00621"></a>00621
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   632
 
<a name="l00622"></a>00622 <span class="comment">// get the frame interval</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   633
 
<a name="l00623"></a>00623 TTimeIntervalMicroSeconds CMMFRawFormatWrite::FrameTimeInterval(TMediaId aMediaId)<span class="keyword"> const</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   634
 
<a name="l00624"></a>00624 <span class="keyword">        </span>{
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   635
 
<a name="l00625"></a>00625         <span class="keywordflow">if</span> (aMediaId.iMediaType == KUidMediaTypeAudio) <span class="keywordflow">return</span> iFrameTimeInterval;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   636
 
<a name="l00626"></a>00626         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TTimeIntervalMicroSeconds(0);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   637
 
<a name="l00627"></a>00627         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   638
 
<a name="l00628"></a>00628
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   639
 
<a name="l00629"></a>00629 <span class="comment">// returns the duration of the source clip</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   640
 
<a name="l00630"></a>00630 TTimeIntervalMicroSeconds CMMFRawFormatWrite::Duration(TMediaId aMediaId)<span class="keyword"> const</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   641
 
<a name="l00631"></a>00631 <span class="keyword">        </span>{
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   642
 
<a name="l00632"></a>00632         <span class="keywordflow">if</span> ((aMediaId.iMediaType == KUidMediaTypeAudio)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   643
 
<a name="l00633"></a>00633                 &amp;&amp; (iDataSize) &amp;&amp; (iSampleRate) &amp;&amp; (iBitsPerSample) &amp;&amp; (iChannels))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   644
 
<a name="l00634"></a>00634                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   645
 
<a name="l00635"></a>00635                 TInt64 clipLength(iDataSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   646
 
<a name="l00636"></a>00636                 clipLength*=KOneSecondInMicroSeconds;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   647
 
<a name="l00637"></a>00637                 TTimeIntervalMicroSeconds duration = TTimeIntervalMicroSeconds(clipLength/iSampleRate);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   648
 
<a name="l00638"></a>00638                 duration =
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   649
 
<a name="l00639"></a>00639                         TTimeIntervalMicroSeconds(duration.Int64()/(iBitsPerSample*iChannels));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   650
 
<a name="l00640"></a>00640                 duration = TTimeIntervalMicroSeconds(duration.Int64()*8);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   651
 
<a name="l00641"></a>00641                 <span class="keywordflow">return</span> duration;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   652
 
<a name="l00642"></a>00642                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   653
 
<a name="l00643"></a>00643         <span class="keywordflow">else</span> <span class="keywordflow">return</span> TTimeIntervalMicroSeconds(0);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   654
 
<a name="l00644"></a>00644         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   655
 
<a name="l00645"></a>00645
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   656
 
<a name="l00646"></a>00646 <span class="comment">// Calculate and return the number of bytes used for on second of audio.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   657
 
<a name="l00647"></a>00647 TInt64 CMMFRawFormatWrite::BytesPerSecond()
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   658
 
<a name="l00648"></a>00648         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   659
 
<a name="l00649"></a>00649         TInt64 bitsPerSecond = iSampleRate * iBitsPerSample * iChannels ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   660
 
<a name="l00650"></a>00650         TInt64 bytesPerSecond = bitsPerSecond/8;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   661
 
<a name="l00651"></a>00651         <span class="keywordflow">return</span> bytesPerSecond ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   662
 
<a name="l00652"></a>00652         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   663
 
<a name="l00653"></a>00653
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   664
 
<a name="l00654"></a>00654 <span class="comment">// Shortens the clip from the position specified to the end specified.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   665
 
<a name="l00655"></a>00655 <span class="keywordtype">void</span> CMMFRawFormatWrite::CropL(TTimeIntervalMicroSeconds aPosition, TBool aToEnd )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   666
 
<a name="l00656"></a>00656         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   667
 
<a name="l00657"></a>00657         <span class="comment">// Does clip have any size to crop</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   668
 
<a name="l00658"></a>00658         <span class="keywordflow">if</span> (!(STATIC_CAST(CMMFClip*,iClip)-&gt;Size())) User::Leave(KErrNotFound); <span class="comment">//no clip to crop or clip is 0 bytes.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   669
 
<a name="l00659"></a>00659
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   670
 
<a name="l00660"></a>00660
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   671
 
<a name="l00661"></a>00661         <span class="comment">// Is aPosition between the start and the end?</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   672
 
<a name="l00662"></a>00662         <span class="keywordflow">if</span> ( ( aPosition &lt; TTimeIntervalMicroSeconds(0) ) || ( aPosition &gt;= Duration( KUidMediaTypeAudio) ) )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   673
 
<a name="l00663"></a>00663                 User::Leave( KErrArgument ) ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   674
 
<a name="l00664"></a>00664
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   675
 
<a name="l00665"></a>00665         <span class="comment">// Convert aPostion to cropPosition in bytes</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   676
 
<a name="l00666"></a>00666
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   677
 
<a name="l00667"></a>00667         TInt64 cropPosition64 =
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   678
 
<a name="l00668"></a>00668                 TInt64( ( aPosition.Int64() * iSampleRate * (iBitsPerSample/8) * iChannels ) /KOneSecondInMicroSeconds);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   679
 
<a name="l00669"></a>00669         TUint cropPosition = I64INT(cropPosition64);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   680
 
<a name="l00670"></a>00670
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   681
 
<a name="l00671"></a>00671         <span class="comment">// Does cropPosition need adjustment to retain integrity?  (assume not)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   682
 
<a name="l00672"></a>00672
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   683
 
<a name="l00673"></a>00673         TUint dataSize ;  <span class="comment">// This will be the size of the data left after cropping.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   684
 
<a name="l00674"></a>00674
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   685
 
<a name="l00675"></a>00675         <span class="keywordflow">if</span> ( !aToEnd )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   686
 
<a name="l00676"></a>00676                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   687
 
<a name="l00677"></a>00677                 <span class="comment">// Shift the data physically</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   688
 
<a name="l00678"></a>00678                 <span class="comment">// move the data in blocks</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   689
 
<a name="l00679"></a>00679                 <span class="comment">// Create a CMMFDataBuffer and use CMMFClip to shift the data</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   690
 
<a name="l00680"></a>00680                 dataSize = iMaxPos - cropPosition ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   691
 
<a name="l00681"></a>00681                 <span class="keywordflow">if</span> (( dataSize &gt; 0 ) &amp;&amp; (aPosition != TTimeIntervalMicroSeconds(0)))
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   692
 
<a name="l00682"></a>00682                         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   693
 
<a name="l00683"></a>00683                         TUint bufSize = ( dataSize &lt; KDefineIOBufferSize ? dataSize : KDefineIOBufferSize ) ; <span class="comment">//max bufSize 512</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   694
 
<a name="l00684"></a>00684                         CMMFDataBuffer* buffer = CMMFDataBuffer::NewL(bufSize) ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   695
 
<a name="l00685"></a>00685                         CleanupStack::PushL( buffer ) ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   696
 
<a name="l00686"></a>00686
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   697
 
<a name="l00687"></a>00687                         TUint rPos = cropPosition ; <span class="comment">// read position</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   698
 
<a name="l00688"></a>00688                         TUint wPos = 0;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   699
 
<a name="l00689"></a>00689                         TInt dataToShift = ETrue ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   700
 
<a name="l00690"></a>00690                         <span class="keywordflow">while</span> ( dataToShift )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   701
 
<a name="l00691"></a>00691                                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   702
 
<a name="l00692"></a>00692                                 STATIC_CAST( CMMFClip*, iClip )-&gt;ReadBufferL( buffer, rPos ) ;  <span class="comment">// synchronous calls</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   703
 
<a name="l00693"></a>00693                                 STATIC_CAST( CMMFClip*, iClip )-&gt;WriteBufferL( buffer, wPos ) ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   704
 
<a name="l00694"></a>00694                                 <span class="keywordflow">if</span> ( rPos &gt; iMaxPos )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   705
 
<a name="l00695"></a>00695                                         dataToShift = EFalse ;  <span class="comment">// past the end:  Done</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   706
 
<a name="l00696"></a>00696                                 <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   707
 
<a name="l00697"></a>00697                                         { <span class="comment">// shift the pointers</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   708
 
<a name="l00698"></a>00698                                         rPos += bufSize ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   709
 
<a name="l00699"></a>00699                                         wPos += bufSize ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   710
 
<a name="l00700"></a>00700                                         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   711
 
<a name="l00701"></a>00701                                 }<span class="comment">// while data to shift</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   712
 
<a name="l00702"></a>00702                         CleanupStack::PopAndDestroy( ) ; <span class="comment">// buffer</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   713
 
<a name="l00703"></a>00703                         }<span class="comment">// if data to shift</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   714
 
<a name="l00704"></a>00704                 }<span class="comment">// crop to start</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   715
 
<a name="l00705"></a>00705         <span class="keywordflow">else</span> <span class="comment">// crop to end</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   716
 
<a name="l00706"></a>00706                 dataSize = cropPosition ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   717
 
<a name="l00707"></a>00707
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   718
 
<a name="l00708"></a>00708         iDataSize = dataSize ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   719
 
<a name="l00709"></a>00709         iMaxPos = dataSize ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   720
 
<a name="l00710"></a>00710
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   721
 
<a name="l00711"></a>00711         <span class="comment">// Do the physical chop</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   722
 
<a name="l00712"></a>00712         <span class="keywordflow">if</span> ( iClip-&gt;DataSinkType() == KUidMmfFileSink )
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   723
 
<a name="l00713"></a>00713                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   724
 
<a name="l00714"></a>00714                 STATIC_CAST( CMMFFile*, iClip )-&gt;FileL().SetSize( iMaxPos ) ;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   725
 
<a name="l00715"></a>00715                 iClipLength = iMaxPos;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   726
 
<a name="l00716"></a>00716                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   727
 
<a name="l00717"></a>00717         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   728
 
<a name="l00718"></a>00718
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   729
 
<a name="l00719"></a>00719 <span class="comment">// get the supported sample rates</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   730
 
<a name="l00720"></a>00720 <span class="keywordtype">void</span> CMMFRawFormatWrite::GetSupportedSampleRatesL(RArray&lt;TUint&gt;&amp; aSampleRates)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   731
 
<a name="l00721"></a>00721         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   732
 
<a name="l00722"></a>00722         aSampleRates.Reset();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   733
 
<a name="l00723"></a>00723
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   734
 
<a name="l00724"></a>00724         <span class="comment">// Iterate through the valid sample table and append each value to aSampleRates</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   735
 
<a name="l00725"></a>00725         TInt i = <span class="keyword">sizeof</span>(KRawSampleRates) / <span class="keyword">sizeof</span>(TUint);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   736
 
<a name="l00726"></a>00726
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   737
 
<a name="l00727"></a>00727         <span class="keywordflow">while</span> (i--)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   738
 
<a name="l00728"></a>00728                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   739
 
<a name="l00729"></a>00729                 User::LeaveIfError(aSampleRates.Append(KRawSampleRates[i]));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   740
 
<a name="l00730"></a>00730                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   741
 
<a name="l00731"></a>00731         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   742
 
<a name="l00732"></a>00732
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   743
 
<a name="l00733"></a>00733 <span class="comment">// get the supported channel number options</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   744
 
<a name="l00734"></a>00734 <span class="keywordtype">void</span> CMMFRawFormatWrite::GetSupportedNumChannelsL(RArray&lt;TUint&gt;&amp; aNumChannels)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   745
 
<a name="l00735"></a>00735         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   746
 
<a name="l00736"></a>00736         aNumChannels.Reset();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   747
 
<a name="l00737"></a>00737         User::LeaveIfError(aNumChannels.Append(KMono));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   748
 
<a name="l00738"></a>00738         User::LeaveIfError(aNumChannels.Append(KStereo));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   749
 
<a name="l00739"></a>00739         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   750
 
<a name="l00740"></a>00740
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   751
 
<a name="l00741"></a>00741 <span class="comment">// set maximum clip size</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   752
 
<a name="l00742"></a>00742 <span class="keywordtype">void</span> CMMFRawFormatWrite::SetMaximumClipSize(TInt aBytes)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   753
 
<a name="l00743"></a>00743         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   754
 
<a name="l00744"></a>00744         iMaximumClipSize = aBytes;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   755
 
<a name="l00745"></a>00745         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   756
 
<a name="l00746"></a>00746
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   757
 
<a name="l00747"></a>00747 <span class="comment">// get the supported codecs</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   758
 
<a name="l00748"></a>00748 <span class="keywordtype">void</span> CMMFRawFormatWrite::GetSupportedDataTypesL(TMediaId aMediaId, RArray&lt;TFourCC&gt;&amp; aDataTypes)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   759
 
<a name="l00749"></a>00749         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   760
 
<a name="l00750"></a>00750         <span class="keywordflow">if</span> (aMediaId.iMediaType != KUidMediaTypeAudio)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   761
 
<a name="l00751"></a>00751                 User::Leave(KErrNotSupported);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   762
 
<a name="l00752"></a>00752         aDataTypes.Reset();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   763
 
<a name="l00753"></a>00753         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCM16));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   764
 
<a name="l00754"></a>00754         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCM16B));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   765
 
<a name="l00755"></a>00755         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodePCMU16));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   766
 
<a name="l00756"></a>00756         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodeIMAD));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   767
 
<a name="l00757"></a>00757         User::LeaveIfError(aDataTypes.Append(KMMFFourCCCodeIMAS));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   768
 
<a name="l00758"></a>00758         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   769
 
<a name="l00759"></a>00759
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   770
 
<a name="l00760"></a>00760
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   771
 
<a name="l00761"></a>00761 <span class="comment">// __________________________________________________________________________</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   772
 
<a name="l00762"></a>00762 <span class="comment">// Exported proxy for instantiation method resolution</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   773
 
<a name="l00763"></a>00763 <span class="comment">// Define the interface UIDs</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   774
 
<a name="l00764"></a>00764
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   775
 
<a name="l00765"></a>00765 <span class="keyword">const</span> TImplementationProxy ImplementationTable[] =
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   776
 
<a name="l00766"></a>00766         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   777
 
<a name="l00767"></a>00767                 IMPLEMENTATION_PROXY_ENTRY(KRawDecoder, CMMFRawFormatRead::NewL),
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   778
 
<a name="l00768"></a>00768                 IMPLEMENTATION_PROXY_ENTRY(KRawEncoder, CMMFRawFormatWrite::NewL)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   779
 
<a name="l00769"></a>00769         };
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   780
 
<a name="l00770"></a>00770
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   781
 
<a name="l00771"></a>00771 EXPORT_C <span class="keyword">const</span> TImplementationProxy* ImplementationGroupProxy(TInt&amp; aTableCount)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   782
 
<a name="l00772"></a>00772         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   783
 
<a name="l00773"></a>00773         aTableCount = <span class="keyword">sizeof</span>(ImplementationTable) / <span class="keyword">sizeof</span>(TImplementationProxy);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   784
 
<a name="l00774"></a>00774
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   785
 
<a name="l00775"></a>00775         <span class="keywordflow">return</span> ImplementationTable;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   786
 
<a name="l00776"></a>00776         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   787
 
</pre></div></div>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   788
 
<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   789
 
<a href="http://www.doxygen.org/index.html">
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   790
 
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   791
 
</body>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   792
 
</html>
FCL/sftools/depl/docscontent