Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/mmfrawformat_8h_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
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Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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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.h 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.h</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="preprocessor">#ifndef __MMF_RAW_FORMAT_H__</span>
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<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#define __MMF_RAW_FORMAT_H__</span>
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<a name="l00018"></a>00018 <span class="preprocessor"></span>
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<a name="l00019"></a>00019 <span class="comment">// MMF framework headers</span>
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<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;mmfformat.h&gt;</span>
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<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;mmfdatabuffer.h&gt;</span>
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<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;mmfclip.h&gt;</span>
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<a name="l00023"></a>00023 <span class="preprocessor">#include &lt;implementationproxy.h&gt;</span>
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<a name="l00024"></a>00024 <span class="preprocessor">#include &lt;mmfutilities.h&gt;</span>
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<a name="l00025"></a>00025 
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<a name="l00026"></a>00026 <span class="comment">/* Audio decoder plug-in to read .RAW audio.</span>
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<a name="l00027"></a>00027 <span class="comment"> It implements MDataSource to pass data to the controller, and MDataSink to read data from </span>
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<a name="l00028"></a>00028 <span class="comment"> the source clip.</span>
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<a name="l00029"></a>00029 <span class="comment"> Also implements MAsyncEventHandler to send an event to the client */</span>
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<a name="l00030"></a><a class="code" href="class_c_m_m_f_raw_format_read.html">00030</a> <span class="keyword">class </span><a class="code" href="class_c_m_m_f_raw_format_read.html">CMMFRawFormatRead</a> : <span class="keyword">public</span> CMMFFormatDecode, <span class="keyword">public</span> MAsyncEventHandler
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<a name="l00031"></a>00031         {
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<a name="l00032"></a>00032 <span class="keyword">public</span>:
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<a name="l00033"></a>00033         <span class="comment">// Factory function</span>
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<a name="l00034"></a>00034         <span class="keyword">static</span> CMMFFormatDecode* NewL(MDataSource* aSource);
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<a name="l00035"></a>00035         ~<a class="code" href="class_c_m_m_f_raw_format_read.html">CMMFRawFormatRead</a>();
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<a name="l00036"></a>00036 
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<a name="l00037"></a>00037         <span class="comment">//from MDataSource</span>
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<a name="l00038"></a>00038         <span class="keywordtype">void</span> FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer, TMediaId aMediaId);
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<a name="l00039"></a>00039         CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, TBool &amp;aReference); 
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<a name="l00040"></a>00040         CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, CMMFBuffer&amp; aSinkBuffer, TBool &amp;aReference);
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<a name="l00041"></a>00041         TFourCC SourceDataTypeCode(TMediaId aMediaId);
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<a name="l00042"></a>00042         TInt SetSourceDataTypeCode(TFourCC aSourceFourCC, TMediaId aMediaId); 
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<a name="l00043"></a>00043         TInt SourceThreadLogon(MAsyncEventHandler&amp; aEventHandler);
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<a name="l00044"></a>00044         <span class="keywordtype">void</span> SourceThreadLogoff();
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<a name="l00045"></a>00045         <span class="keywordtype">void</span> SourcePrimeL();
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<a name="l00046"></a>00046         <span class="keywordtype">void</span> SourcePlayL();
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<a name="l00047"></a>00047         <span class="keywordtype">void</span> SourcePauseL();
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<a name="l00048"></a>00048         <span class="keywordtype">void</span> SourceStopL();
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<a name="l00049"></a>00049 
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<a name="l00050"></a>00050         <span class="comment">//from MDataSink</span>
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<a name="l00051"></a>00051         <span class="keywordtype">void</span> BufferFilledL(CMMFBuffer* aBuffer);
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<a name="l00052"></a>00052 
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<a name="l00053"></a>00053         <span class="comment">// from CMMFFormatDecode</span>
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<a name="l00054"></a>00054         TUint Streams(TUid aMediaType) <span class="keyword">const</span>;
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<a name="l00055"></a>00055         TTimeIntervalMicroSeconds FrameTimeInterval(TMediaId aMediaType) <span class="keyword">const</span>;
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<a name="l00056"></a>00056         TTimeIntervalMicroSeconds Duration(TMediaId aMediaType) <span class="keyword">const</span>;
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<a name="l00057"></a>00057         TUint NumChannels() {<span class="keywordflow">return</span> iChannels;};
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<a name="l00058"></a>00058         TUint SampleRate() {<span class="keywordflow">return</span> iSampleRate;};
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<a name="l00059"></a>00059         TUint BitRate() {<span class="keywordflow">return</span> iSampleRate * iBitsPerSample;};
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<a name="l00060"></a>00060         TInt SetNumChannels(TUint aChannels);
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<a name="l00061"></a>00061         TInt SetSampleRate(TUint aSampleRate);
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<a name="l00062"></a>00062         <span class="keywordtype">void</span> GetSupportedSampleRatesL(RArray&lt;TUint&gt;&amp; aSampleRates);
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<a name="l00063"></a>00063         <span class="keywordtype">void</span> GetSupportedNumChannelsL(RArray&lt;TUint&gt;&amp; aNumChannels);
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<a name="l00064"></a>00064         <span class="keywordtype">void</span> GetSupportedDataTypesL(TMediaId aMediaId, RArray&lt;TFourCC&gt;&amp; aDataTypes);
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<a name="l00065"></a>00065         <span class="keywordtype">void</span> SuggestSourceBufferSize(TUint aSuggestedBufferSize);       
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<a name="l00066"></a>00066 
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<a name="l00067"></a>00067         <span class="comment">//from MAsyncEventHandler</span>
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<a name="l00068"></a>00068         TInt SendEventToClient(<span class="keyword">const</span> TMMFEvent&amp; <span class="comment">/*aEvent*/</span>) {<span class="keywordflow">return</span> KErrNone;}
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<a name="l00069"></a>00069 
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<a name="l00070"></a>00070 <span class="keyword">private</span>:
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<a name="l00071"></a>00071         <span class="comment">// Construction</span>
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<a name="l00072"></a>00072         <span class="keywordtype">void</span> ConstructL(MDataSource* aSource);
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<a name="l00073"></a>00073         <span class="comment">// Helper functions</span>
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<a name="l00074"></a>00074         CMMFDataBuffer* CreateSourceBufferOfSizeL(TUint aSize);
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<a name="l00075"></a>00075         <span class="keywordtype">void</span> DoReadL(TInt aReadPosition);
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<a name="l00076"></a>00076         <span class="keywordtype">void</span> NegotiateSourceBufferL(CMMFBuffer&amp; aBuffer);
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<a name="l00077"></a>00077         <span class="keywordtype">void</span> CalculateFrameTimeInterval();
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<a name="l00078"></a>00078 
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<a name="l00079"></a>00079 <span class="keyword">protected</span>:
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<a name="l00080"></a>00080         MDataSource* iClip; <span class="comment">//for decode format MDatasource; for encode format MDataSink</span>
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<a name="l00081"></a>00081         MDataSink* iDataPath; <span class="comment">//for decode format MDataSink; for encode format MDataSource</span>
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<a name="l00082"></a>00082         TFourCC iFourCC;        
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<a name="l00083"></a>00083 
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<a name="l00084"></a>00084 <span class="keyword">private</span>:
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<a name="l00085"></a>00085         CMMFDataBuffer* iBuffer;
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<a name="l00086"></a>00086         TUint iStartPosition;
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<a name="l00087"></a>00087         TUint iPos;
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<a name="l00088"></a>00088         TUint iChannels;
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<a name="l00089"></a>00089         TUint iSampleRate;
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<a name="l00090"></a>00090         TUint iBitsPerSample;
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<a name="l00091"></a>00091         TTimeIntervalMicroSeconds iFrameTimeInterval;
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<a name="l00092"></a>00092         TUint iFrameSize;
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<a name="l00093"></a>00093         TUint iClipLength;
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<a name="l00094"></a>00094         };
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<a name="l00095"></a>00095 
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<a name="l00096"></a>00096 
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<a name="l00097"></a>00097 <span class="comment">/* Audio encoder plug-in to write .RAW audio.</span>
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<a name="l00098"></a>00098 <span class="comment"> It implements MDataSink to get data from the controller, and MDataSource to write data to </span>
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<a name="l00099"></a>00099 <span class="comment"> the target clip.</span>
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<a name="l00100"></a>00100 <span class="comment"> Also implements MAsyncEventHandler to send an event to the client */</span>
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<a name="l00101"></a><a class="code" href="class_c_m_m_f_raw_format_write.html">00101</a> <span class="keyword">class </span><a class="code" href="class_c_m_m_f_raw_format_write.html">CMMFRawFormatWrite</a> : <span class="keyword">public</span> CMMFFormatEncode, <span class="keyword">public</span> MAsyncEventHandler
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<a name="l00102"></a>00102         {
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<a name="l00103"></a>00103 <span class="keyword">public</span>:
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<a name="l00104"></a>00104         <span class="comment">// Factory function</span>
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<a name="l00105"></a>00105         <span class="keyword">static</span> CMMFFormatEncode* NewL(MDataSink* aSink);
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<a name="l00106"></a>00106         ~<a class="code" href="class_c_m_m_f_raw_format_write.html">CMMFRawFormatWrite</a>();
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<a name="l00107"></a>00107 
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<a name="l00108"></a>00108         <span class="comment">//from MDataSink</span>
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<a name="l00109"></a>00109         CMMFBuffer* CreateSinkBufferL(TMediaId aMediaId, TBool &amp;aReference); 
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<a name="l00110"></a>00110         TFourCC SinkDataTypeCode(TMediaId aMediaId); <span class="comment">//returns FourCC code for the mediaId</span>
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<a name="l00111"></a>00111         TInt SetSinkDataTypeCode(TFourCC aSinkFourCC, TMediaId aMediaId); 
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<a name="l00112"></a>00112         TInt SinkThreadLogon(MAsyncEventHandler&amp; aEventHandler);
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<a name="l00113"></a>00113         <span class="keywordtype">void</span> SinkThreadLogoff();
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<a name="l00114"></a>00114         <span class="keywordtype">void</span> Negotiate(MDataSource&amp; aSource);
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<a name="l00115"></a>00115         <span class="keywordtype">void</span> SinkPrimeL();
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<a name="l00116"></a>00116         <span class="keywordtype">void</span> SinkPlayL();
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<a name="l00117"></a>00117         <span class="keywordtype">void</span> SinkPauseL();
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<a name="l00118"></a>00118         <span class="keywordtype">void</span> SinkStopL();
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<a name="l00119"></a>00119         <span class="keywordtype">void</span> EmptyBufferL(CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId);
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<a name="l00120"></a>00120 
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<a name="l00121"></a>00121         <span class="comment">//from MDataSource</span>
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<a name="l00122"></a>00122         <span class="keywordtype">void</span> BufferEmptiedL(CMMFBuffer* aBuffer);
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<a name="l00123"></a>00123 
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<a name="l00124"></a>00124         <span class="comment">// from CMMFFormatEncode</span>
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<a name="l00125"></a>00125         TTimeIntervalMicroSeconds FrameTimeInterval(TMediaId aMediaType) <span class="keyword">const</span>;
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<a name="l00126"></a>00126         TTimeIntervalMicroSeconds Duration(TMediaId aMediaType) <span class="keyword">const</span>;
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<a name="l00127"></a>00127         TInt SetNumChannels(TUint aChannels);
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<a name="l00128"></a>00128         TInt SetSampleRate(TUint aSampleRate);
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<a name="l00129"></a>00129         TUint NumChannels() {<span class="keywordflow">return</span> iChannels;};
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<a name="l00130"></a>00130         TUint SampleRate() {<span class="keywordflow">return</span> iSampleRate;};
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<a name="l00131"></a>00131         TUint BitRate() {<span class="keywordflow">return</span> iSampleRate * iBitsPerSample;};
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<a name="l00132"></a>00132         TInt64 BytesPerSecond()  ;
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<a name="l00133"></a>00133         <span class="keywordtype">void</span> GetSupportedSampleRatesL(RArray&lt;TUint&gt;&amp; aSampleRates);
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<a name="l00134"></a>00134         <span class="keywordtype">void</span> GetSupportedNumChannelsL(RArray&lt;TUint&gt;&amp; aNumChannels);
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<a name="l00135"></a>00135         <span class="keywordtype">void</span> GetSupportedDataTypesL(TMediaId aMediaId, RArray&lt;TFourCC&gt;&amp; aDataTypes);
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<a name="l00136"></a>00136         <span class="keywordtype">void</span> SetMaximumClipSize(TInt aBytes);
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<a name="l00137"></a>00137         <span class="keywordtype">void</span> CropL(TTimeIntervalMicroSeconds aPosition, TBool aToEnd ) ;
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<a name="l00138"></a>00138 
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<a name="l00139"></a>00139         <span class="comment">//from MAsyncEventHandler</span>
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<a name="l00140"></a>00140         TInt SendEventToClient(<span class="keyword">const</span> TMMFEvent&amp; <span class="comment">/*aEvent*/</span>) {<span class="keywordflow">return</span> KErrNone;}
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<a name="l00141"></a>00141 
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<a name="l00142"></a>00142 <span class="keyword">private</span>:
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<a name="l00143"></a>00143         <span class="comment">// construction</span>
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<a name="l00144"></a>00144         <span class="keywordtype">void</span> ConstructL(MDataSink* aSink);
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<a name="l00145"></a>00145         <span class="comment">// helper functions</span>
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<a name="l00146"></a>00146         CMMFDataBuffer* CreateSinkBufferOfSizeL(TUint aSize);
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<a name="l00147"></a>00147         <span class="keywordtype">void</span> CalculateFrameTimeInterval();
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<a name="l00148"></a>00148         <span class="keywordtype">void</span> DoReadL(TInt aReadPosition);
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<a name="l00149"></a>00149         <span class="keywordtype">void</span> DoWriteL(TInt aWritePosition);
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<a name="l00150"></a>00150 
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<a name="l00151"></a>00151 <span class="keyword">private</span>:
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<a name="l00152"></a>00152         MDataSink* iClip; <span class="comment">//for decode format MDatasource; for encode format MDataSink</span>
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<a name="l00153"></a>00153         MDataSource* iDataPath; <span class="comment">//for decode format MDataSink; for encode format MDataSource</span>
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<a name="l00154"></a>00154         TFourCC iFourCC;        
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<a name="l00155"></a>00155         CMMFDataBuffer* iBuffer;
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<a name="l00156"></a>00156         TBool iClipAlreadyExists;
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<a name="l00157"></a>00157         TBool iBufferCreated;
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<a name="l00158"></a>00158         TBool iFileHasChanged;
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<a name="l00159"></a>00159         TUint iStartPosition;
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<a name="l00160"></a>00160         TUint iDataLength;
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<a name="l00161"></a>00161         TUint iPos;
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<a name="l00162"></a>00162         TUint iMaxPos;
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<a name="l00163"></a>00163         TUint iChannels;
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<a name="l00164"></a>00164         TUint iSampleRate;
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<a name="l00165"></a>00165         TUint iSourceChannels;
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<a name="l00166"></a>00166         TUint iSourceSampleRate;
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<a name="l00167"></a>00167         TFourCC iSourceFourCC;
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<a name="l00168"></a>00168         TUint iBitsPerSample;
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<a name="l00169"></a>00169         TTimeIntervalMicroSeconds iFrameTimeInterval;
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<a name="l00170"></a>00170         TUint iFrameSize;
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<a name="l00171"></a>00171         TUint iClipLength;
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<a name="l00172"></a>00172         TUint iDataSize;
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<a name="l00173"></a>00173         CMMFChannelAndSampleRateConverterFactory* iChannelAndSampleRateConverterFactory;
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<a name="l00174"></a>00174         CMMFChannelAndSampleRateConverter* iChannelAndSampleRateConverter; 
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<a name="l00175"></a>00175         CMMFDataBuffer* iConvertBuffer;
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<a name="l00176"></a>00176         CMMFBuffer* iBufferToEmpty; <span class="comment">//pointer to store buffr to empty - needed if buffer passed to clip is different</span>
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<a name="l00177"></a>00177         TBool iSourceWillSampleConvert;
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<a name="l00178"></a>00178         TInt iMaximumClipSize;
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<a name="l00179"></a>00179         };
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<a name="l00180"></a>00180 
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<a name="l00181"></a>00181 <span class="preprocessor">#endif</span>
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<a name="l00182"></a>00182 <span class="preprocessor"></span>
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>