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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_audio_stream_engine_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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/ForumNokia/AudioStreamExample/src/AudioStreamEngine.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/ForumNokia/AudioStreamExample/src/AudioStreamEngine.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * Copyright © 2008 Nokia Corporation.</span>
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<a name="l00003"></a>00003 <span class="comment"> */</span>
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<a name="l00004"></a>00004
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<a name="l00005"></a>00005 <span class="preprocessor">#include &lt;mda\common\audio.h&gt;</span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include &lt;mmf\common\mmfutilities.h&gt;</span>
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<a name="l00007"></a>00007 <span class="preprocessor">#include &lt;MdaAudioInputStream.h&gt;</span>    <span class="comment">// audio input stream</span>
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<a name="l00008"></a>00008 <span class="preprocessor">#include &lt;MdaAudioOutputStream.h&gt;</span>   <span class="comment">// audio output stream</span>
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<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;s32file.h&gt;</span>                <span class="comment">// RFileWriteStream and RFileReadStream</span>
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<a name="l00010"></a>00010
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<a name="l00011"></a>00011 <span class="preprocessor">#include &quot;AudioStreamEngine.h&quot;</span>
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<a name="l00012"></a>00012 <span class="preprocessor">#include &quot;audiostream.pan&quot;</span>
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<a name="l00013"></a>00013
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<a name="l00014"></a>00014 <span class="comment">// Audio data buffer size.</span>
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<a name="l00015"></a>00015 <span class="comment">// In both 3rd Edition and 2nd Edition the total buffer (iStreamBuffer) size is </span>
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<a name="l00016"></a>00016 <span class="comment">// KFrameSizePCM * KFrameCountPCM = 40960 bytes. This will contain 2560 ms </span>
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<a name="l00017"></a>00017 <span class="comment">// of 16-bit audio data. </span>
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<a name="l00018"></a>00018 <span class="comment">// In 3rd Edition the KFrameSizePCM is 4096 bytes, because CMdaAudioInputStream::ReadL() </span>
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<a name="l00019"></a>00019 <span class="comment">// returns audio data in 4096-byte chunks. In 2nd Edition, ReadL() returns data in 320-byte</span>
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<a name="l00020"></a>00020 <span class="comment">// chunks.</span>
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<a name="l00021"></a>00021 <span class="keyword">const</span> TInt KFrameSizePCM = 4096;
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<a name="l00022"></a>00022 <span class="keyword">const</span> TInt KFrameCountPCM = 100;
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<a name="l00023"></a>00023
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<a name="l00024"></a>00024 <span class="comment">// Audio data buffer size for AMR encoding. For AMR, the buffer size is the same in</span>
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<a name="l00025"></a>00025 <span class="comment">// both 2nd and 3rd Edition devices (20 ms per frame, a total of 2560 ms in 128 frames).</span>
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<a name="l00026"></a>00026 <span class="keyword">const</span> TInt KFrameSizeAMR = 14;
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<a name="l00027"></a>00027 <span class="keyword">const</span> TInt KFrameCountAMR = 128;
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<a name="l00028"></a>00028 <span class="comment">// Header data for an AMR-encoded audio file</span>
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<a name="l00029"></a>00029 <span class="keyword">const</span> TInt KAMRHeaderLength=6;
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<a name="l00030"></a>00030 <span class="keyword">const</span> TUint8 KAMRNBHeader[KAMRHeaderLength] = { 0x23, 0x21, 0x41, 0x4d, 0x52, 0x0a };
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032 <span class="comment">// Files to store the sample audio clips</span>
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<a name="l00033"></a>00033 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAudioFilePCM, <span class="stringliteral">&quot;sample.aud&quot;</span>);
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<a name="l00034"></a>00034 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAudioFileAMR, <span class="stringliteral">&quot;sample.amr&quot;</span>);
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<a name="l00035"></a>00035
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<a name="l00036"></a>00036
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<a name="l00037"></a><a class="code" href="class_c_audio_stream_engine.html#a642c7bef4022a84b0235c87046e261fe">00037</a> <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* <a class="code" href="class_c_audio_stream_engine.html#a642c7bef4022a84b0235c87046e261fe">CAudioStreamEngine::NewL</a>(<a class="code" href="class_c_audio_stream_app_ui.html">CAudioStreamAppUi</a>* aAppUi)
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<a name="l00038"></a>00038     {
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<a name="l00039"></a>00039     <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* <span class="keyword">self</span> = <a class="code" href="class_c_audio_stream_engine.html#a91672b67faf4b872f536dfa30a0cb087">CAudioStreamEngine::NewLC</a>(aAppUi);
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<a name="l00040"></a>00040     CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00041"></a>00041     <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00042"></a>00042     }
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<a name="l00043"></a>00043
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<a name="l00044"></a><a class="code" href="class_c_audio_stream_engine.html#a91672b67faf4b872f536dfa30a0cb087">00044</a> <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* <a class="code" href="class_c_audio_stream_engine.html#a91672b67faf4b872f536dfa30a0cb087">CAudioStreamEngine::NewLC</a>(<a class="code" href="class_c_audio_stream_app_ui.html">CAudioStreamAppUi</a>* aAppUi)
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<a name="l00045"></a>00045     {
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<a name="l00046"></a>00046     <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>(aAppUi);
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<a name="l00047"></a>00047     CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00048"></a>00048     <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00049"></a>00049     <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00050"></a>00050     }
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<a name="l00051"></a>00051
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<a name="l00052"></a>00052 <span class="comment">// Standard EPOC 2nd phase constructor</span>
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<a name="l00053"></a>00053 <span class="keywordtype">void</span> CAudioStreamEngine::ConstructL()
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<a name="l00054"></a>00054     {
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<a name="l00055"></a>00055     <span class="comment">// Construct streams. We need to construct these here, so that at least the input stream</span>
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<a name="l00056"></a>00056     <span class="comment">// exists if SetEncodingL() is called before any recording has taken place </span>
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<a name="l00057"></a>00057     iInputStream = <a class="code" href="class_c_audio_stream_engine.html#a642c7bef4022a84b0235c87046e261fe">CMdaAudioInputStream::NewL</a>(*<span class="keyword">this</span>);
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<a name="l00058"></a>00058     iOutputStream = <a class="code" href="class_c_audio_stream_engine.html#a642c7bef4022a84b0235c87046e261fe">CMdaAudioOutputStream::NewL</a>(*<span class="keyword">this</span>);
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<a name="l00059"></a>00059
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<a name="l00060"></a>00060     <span class="comment">// Get a handle to the RFs session to be used (owned by CEikonEnv, NOT to be closed</span>
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<a name="l00061"></a>00061     <span class="comment">// when this application exits!)        </span>
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<a name="l00062"></a>00062     iFs = CEikonEnv::Static()-&gt;FsSession();
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064     <span class="comment">// Save the default encoding for later reference (the encoding is the same for</span>
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<a name="l00065"></a>00065     <span class="comment">// both input and output streams).</span>
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<a name="l00066"></a>00066     iDefaultEncoding = iInputStream-&gt;DataType();
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<a name="l00067"></a>00067     <span class="comment">// At first we are using the default encoding.</span>
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<a name="l00068"></a>00068     iCurrentEncoding = iDefaultEncoding;
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<a name="l00069"></a>00069
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<a name="l00070"></a>00070     <span class="comment">// Stream buffer allocation (by default for PCM)</span>
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<a name="l00071"></a>00071     iStreamBuffer = HBufC8::NewMaxL(iFrameSize * iFrameCount);
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<a name="l00072"></a>00072     iStreamStart=0;
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<a name="l00073"></a>00073     iStreamEnd=iFrameCount - 1;
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<a name="l00074"></a>00074
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<a name="l00075"></a>00075     <span class="comment">// The sample.aud/amr can be found in \private&lt;UID3&gt;\ folder</span>
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<a name="l00076"></a>00076     User::LeaveIfError( iFs.CreatePrivatePath( EDriveC ) );
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<a name="l00077"></a>00077     User::LeaveIfError( iFs.SetSessionToPrivate( EDriveC ) );
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<a name="l00078"></a>00078
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<a name="l00079"></a>00079     iStop = <a class="code" href="class_c_audio_stream_engine.html#a642c7bef4022a84b0235c87046e261fe">CIdle::NewL</a>( CActive::EPriorityIdle );
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<a name="l00080"></a>00080     }
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<a name="l00081"></a>00081
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<a name="l00082"></a>00082 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00083"></a>00083 <span class="comment">// CAudioStreamEngine::CAudioStreamEngine(</span>
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    94
 
<a name="l00084"></a>00084 <span class="comment">//     CAudioStreamAppUi* aAppUi)</span>
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    95
 
<a name="l00085"></a>00085 <span class="comment">//</span>
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    96
 
<a name="l00086"></a>00086 <span class="comment">// onstructor</span>
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    97
 
<a name="l00087"></a>00087 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00088"></a>00088 CAudioStreamEngine::CAudioStreamEngine(<a class="code" href="class_c_audio_stream_app_ui.html">CAudioStreamAppUi</a>* aAppUi)
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<a name="l00089"></a>00089 : iAppUi(aAppUi), iUseAMR(EFalse), iAudioFile(KAudioFilePCM), iFrameSize(KFrameSizePCM),
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<a name="l00090"></a>00090 iFrameCount(KFrameCountPCM), iStreamBuffer(0), iFramePtr(0,0), iBufferOK(EFalse)
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   101
 
<a name="l00091"></a>00091     {
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   102
 
<a name="l00092"></a>00092     <span class="comment">// By default we use PCM and initialise the instance variables accordingly above.</span>
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   103
 
<a name="l00093"></a>00093
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   104
 
<a name="l00094"></a>00094     <span class="comment">// Initial audio stream properties for input and output, 8KHz mono. </span>
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<a name="l00095"></a>00095     <span class="comment">// These settings could also be set/changed using method SetAudioPropertiesL() of</span>
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<a name="l00096"></a>00096     <span class="comment">// the input and output streams.</span>
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<a name="l00097"></a>00097     iStreamSettings.iChannels=TMdaAudioDataSettings::EChannelsMono;
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<a name="l00098"></a>00098     iStreamSettings.iSampleRate=TMdaAudioDataSettings::ESampleRate8000Hz;
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<a name="l00099"></a>00099     }
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   110
 
<a name="l00100"></a>00100
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   111
 
<a name="l00101"></a>00101 <span class="comment">// ----------------------------------------------------------------------------</span>
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   112
 
<a name="l00102"></a>00102 <span class="comment">// CAudioStreamEngine::~CAudioStreamEngine()</span>
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<a name="l00103"></a>00103 <span class="comment">//</span>
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   114
 
<a name="l00104"></a>00104 <span class="comment">// destructor</span>
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<a name="l00105"></a>00105 <span class="comment">// ----------------------------------------------------------------------------</span>
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   116
 
<a name="l00106"></a><a class="code" href="class_c_audio_stream_engine.html#a4da8b5eecd664fea1aea40a95adc03fa">00106</a> <a class="code" href="class_c_audio_stream_engine.html#a4da8b5eecd664fea1aea40a95adc03fa">CAudioStreamEngine::~CAudioStreamEngine</a>()
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<a name="l00107"></a>00107     {
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<a name="l00108"></a>00108     <span class="keywordflow">if</span> (iInputStream)
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   119
 
<a name="l00109"></a>00109         {
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   120
 
<a name="l00110"></a>00110         <span class="keywordflow">if</span> (iInputStatus!=ENotReady)
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   121
 
<a name="l00111"></a>00111             {
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<a name="l00112"></a>00112             iInputStream-&gt;Stop();
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<a name="l00113"></a>00113             }
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<a name="l00114"></a>00114         <span class="keyword">delete</span> iInputStream;
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<a name="l00115"></a>00115         }
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<a name="l00116"></a>00116
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<a name="l00117"></a>00117     <span class="keywordflow">if</span> (iOutputStream)
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<a name="l00118"></a>00118         {
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   129
 
<a name="l00119"></a>00119         <span class="keywordflow">if</span> (iOutputStatus!=ENotReady)
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   130
 
<a name="l00120"></a>00120             {
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<a name="l00121"></a>00121             iOutputStream-&gt;Stop();
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<a name="l00122"></a>00122             }
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<a name="l00123"></a>00123         <span class="keyword">delete</span> iOutputStream;
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<a name="l00124"></a>00124         }
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   135
 
<a name="l00125"></a>00125
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<a name="l00126"></a>00126     <span class="keywordflow">if</span> (iStreamBuffer)
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   137
 
<a name="l00127"></a>00127         {
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   138
 
<a name="l00128"></a>00128         <span class="keyword">delete</span> iStreamBuffer;
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<a name="l00129"></a>00129         }
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<a name="l00130"></a>00130     <span class="keywordflow">if</span> (iStop)
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<a name="l00131"></a>00131         {
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   142
 
<a name="l00132"></a>00132         iStop-&gt;Cancel();
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<a name="l00133"></a>00133         }
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<a name="l00134"></a>00134     <span class="keyword">delete</span> iStop;
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<a name="l00135"></a>00135     }
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   146
 
<a name="l00136"></a>00136
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   147
 
<a name="l00137"></a>00137
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<a name="l00138"></a>00138 <span class="comment">// ----------------------------------------------------------------------------</span>
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   149
 
<a name="l00139"></a>00139 <span class="comment">// CAudioStreamEngine::Play()</span>
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   150
 
<a name="l00140"></a>00140 <span class="comment">//</span>
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   151
 
<a name="l00141"></a>00141 <span class="comment">// plays the audio data contained in the buffer</span>
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<a name="l00142"></a>00142 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00143"></a><a class="code" href="class_c_audio_stream_engine.html#af71152acf3592c67fec809e00c7246ff">00143</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#af71152acf3592c67fec809e00c7246ff">CAudioStreamEngine::Play</a>()
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   154
 
<a name="l00144"></a>00144     {
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   155
 
<a name="l00145"></a>00145     ShowMessage(_L(<span class="stringliteral">&quot;Play &quot;</span>), ETrue);
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<a name="l00146"></a>00146     <span class="comment">// if either stream is active, return</span>
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<a name="l00147"></a>00147     <span class="keywordflow">if</span> (iInputStatus!=ENotReady || iOutputStatus!=ENotReady)
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<a name="l00148"></a>00148         {
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<a name="l00149"></a>00149         ShowMessage(_L(<span class="stringliteral">&quot;Stream in use, \ncannot play audio.&quot;</span>), ETrue);
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<a name="l00150"></a>00150         <span class="keywordflow">return</span>;
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<a name="l00151"></a>00151         }
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   162
 
<a name="l00152"></a>00152
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   163
 
<a name="l00153"></a>00153     <span class="keywordflow">if</span>(!iBufferOK)
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   164
 
<a name="l00154"></a>00154         {
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   165
 
<a name="l00155"></a>00155         ShowMessage(_L(<span class="stringliteral">&quot;Nothing to play - \nrecord or load \na file first.&quot;</span>), ETrue);
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   166
 
<a name="l00156"></a>00156         <span class="keywordflow">return</span>;
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   167
 
<a name="l00157"></a>00157         }
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diff changeset 
   168
 
<a name="l00158"></a>00158
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   169
 
<a name="l00159"></a>00159     <span class="comment">// Open output stream.</span>
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   170
 
<a name="l00160"></a>00160     <span class="comment">// Upon completion will receive callback in </span>
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   171
 
<a name="l00161"></a>00161     <span class="comment">// MMdaAudioOutputStreamCallback::MaoscOpenComplete().</span>
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<a name="l00162"></a>00162     iOutputStream-&gt;Open(&amp;iStreamSettings);
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<a name="l00163"></a>00163     }
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   174
 
<a name="l00164"></a>00164
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   175
 
<a name="l00165"></a>00165
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   176
 
<a name="l00166"></a>00166 <span class="comment">// ----------------------------------------------------------------------------</span>
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   177
 
<a name="l00167"></a>00167 <span class="comment">// CAudioStreamEngine::Record()</span>
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   178
 
<a name="l00168"></a>00168 <span class="comment">//</span>
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   179
 
<a name="l00169"></a>00169 <span class="comment">// records audio data into the buffer</span>
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   180
 
<a name="l00170"></a>00170 <span class="comment">// ----------------------------------------------------------------------------</span>
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   181
 
<a name="l00171"></a><a class="code" href="class_c_audio_stream_engine.html#a7b74589268bba7a746628c9712d7567f">00171</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#a7b74589268bba7a746628c9712d7567f">CAudioStreamEngine::Record</a>()
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   182
 
<a name="l00172"></a>00172     {
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   183
 
<a name="l00173"></a>00173     <span class="comment">// If either stream is active, return</span>
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   184
 
<a name="l00174"></a>00174     <span class="keywordflow">if</span> (iInputStatus!=ENotReady || iOutputStatus!=ENotReady)
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   185
 
<a name="l00175"></a>00175     {
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   186
 
<a name="l00176"></a>00176         ShowMessage(_L(<span class="stringliteral">&quot;Stream in use, \ncannot record audio.&quot;</span>), ETrue);
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   187
 
<a name="l00177"></a>00177         <span class="keywordflow">return</span>;
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<a name="l00178"></a>00178     }
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   189
 
<a name="l00179"></a>00179
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   190
 
<a name="l00180"></a>00180     <span class="comment">// Open input stream.</span>
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   191
 
<a name="l00181"></a>00181     <span class="comment">// Upon completion will receive callback in </span>
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<a name="l00182"></a>00182     <span class="comment">// MMdaAudioInputStreamCallback::MaiscOpenComplete().</span>
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   193
 
<a name="l00183"></a>00183     iInputStream-&gt;Open(&amp;iStreamSettings);
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   194
 
<a name="l00184"></a>00184     }
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   195
 
<a name="l00185"></a>00185
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   196
 
<a name="l00186"></a>00186 <span class="comment">// ----------------------------------------------------------------------------</span>
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   197
 
<a name="l00187"></a>00187 <span class="comment">// CAudioStreamEngine::Stop()</span>
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   198
 
<a name="l00188"></a>00188 <span class="comment">//</span>
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   199
 
<a name="l00189"></a>00189 <span class="comment">// stops playing/recording</span>
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<a name="l00190"></a>00190 <span class="comment">// ----------------------------------------------------------------------------</span>
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   201
 
<a name="l00191"></a><a class="code" href="class_c_audio_stream_engine.html#a6c3450de52c2fe602ed8dceaed90d6b3">00191</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#a6c3450de52c2fe602ed8dceaed90d6b3">CAudioStreamEngine::Stop</a>()
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   202
 
<a name="l00192"></a>00192     {
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   203
 
<a name="l00193"></a>00193     <span class="comment">// if input or output streams are active, close them</span>
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   204
 
<a name="l00194"></a>00194     <span class="keywordflow">if</span> (iInputStatus!=ENotReady)
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<a name="l00195"></a>00195         {
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<a name="l00196"></a>00196         iInputStream-&gt;Stop();
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<a name="l00197"></a>00197         ShowMessage(_L(<span class="stringliteral">&quot;\nRecording stopped!&quot;</span>), ETrue);
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<a name="l00198"></a>00198         iBufferOK = ETrue;
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<a name="l00199"></a>00199         iInputStatus = ENotReady;
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<a name="l00200"></a>00200         }
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<a name="l00201"></a>00201     <span class="keywordflow">if</span> (iOutputStatus!=ENotReady)
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<a name="l00202"></a>00202         {
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<a name="l00203"></a>00203         iOutputStream-&gt;Stop();
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<a name="l00204"></a>00204         iOutputStatus = ENotReady;
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<a name="l00205"></a>00205         ShowMessage(_L(<span class="stringliteral">&quot;\nPlayback stopped!&quot;</span>), ETrue);
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<a name="l00206"></a>00206         }
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<a name="l00207"></a>00207     }
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   218
 
<a name="l00208"></a>00208
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   219
 
<a name="l00209"></a>00209
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<a name="l00210"></a>00210 <span class="comment">// ----------------------------------------------------------------------------</span>
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   221
 
<a name="l00211"></a>00211 <span class="comment">// CAudioStreamEngine::LoadAudioFileL()</span>
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<a name="l00212"></a>00212 <span class="comment">//</span>
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<a name="l00213"></a>00213 <span class="comment">// loads the audio data from a file into the buffer</span>
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<a name="l00214"></a>00214 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00215"></a><a class="code" href="class_c_audio_stream_engine.html#a2cd495294ea2a4cadfd9816b60acd587">00215</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#a2cd495294ea2a4cadfd9816b60acd587">CAudioStreamEngine::LoadAudioFileL</a>()
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<a name="l00216"></a>00216     {
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<a name="l00217"></a>00217     RFileReadStream audiofile;
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<a name="l00218"></a>00218
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<a name="l00219"></a>00219     <span class="comment">// open file</span>
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<a name="l00220"></a>00220     TFileName fileName;
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<a name="l00221"></a>00221     fileName.Copy(iAudioFilePath);
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<a name="l00222"></a>00222     fileName.Append(iAudioFile);
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   233
 
<a name="l00223"></a>00223
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   234
 
<a name="l00224"></a>00224     TInt err = audiofile.Open(iFs, fileName, EFileRead|EFileStream);
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<a name="l00225"></a>00225     iStreamBuffer-&gt;Des().FillZ(iFrameCount * iFrameSize);  <span class="comment">// Empty the stream buffer</span>
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<a name="l00226"></a>00226     <span class="keywordflow">if</span> (err==KErrNone)
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<a name="l00227"></a>00227         {
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<a name="l00228"></a>00228         <span class="comment">// file opened ok, proceed reading</span>
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   239
 
<a name="l00229"></a>00229         <span class="keywordflow">if</span> (iUseAMR)
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<a name="l00230"></a>00230             {
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<a name="l00231"></a>00231             <span class="comment">// Read the AMR header (the first 6 bytes). We don&#39;t need to save/use the header,</span>
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<a name="l00232"></a>00232             <span class="comment">// since while playback we already know it&#39;s an AMR-NB encoded stream.</span>
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<a name="l00233"></a>00233             TBuf8&lt;KAMRHeaderLength&gt; temp;
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<a name="l00234"></a>00234             audiofile.ReadL(temp, KAMRHeaderLength);
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<a name="l00235"></a>00235             }
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<a name="l00236"></a>00236
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   247
 
<a name="l00237"></a>00237         TUint idx=0;
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<a name="l00238"></a>00238         <span class="keywordflow">while</span> (idx &lt; iFrameCount)
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   249
 
<a name="l00239"></a>00239             {
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   250
 
<a name="l00240"></a>00240             TRAPD(fstatus, audiofile.ReadL(GetFrame(idx), iFrameSize));
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   251
 
<a name="l00241"></a>00241             <span class="keywordflow">if</span> (fstatus!=KErrNone)
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<a name="l00242"></a>00242                 <span class="keywordflow">break</span>;
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   253
 
<a name="l00243"></a>00243             idx++;
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<a name="l00244"></a>00244             }
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   255
 
<a name="l00245"></a>00245         iStreamStart=0;
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<a name="l00246"></a>00246         iStreamEnd=idx-1;
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   257
 
<a name="l00247"></a>00247         ShowMessage(_L(<span class="stringliteral">&quot;Loading complete!&quot;</span>), ETrue);
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   258
 
<a name="l00248"></a>00248         iBufferOK = ETrue;
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<a name="l00249"></a>00249         }
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<a name="l00250"></a>00250     <span class="keywordflow">else</span>
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<a name="l00251"></a>00251         {
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   262
 
<a name="l00252"></a>00252         <span class="comment">// failed to open file</span>
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   263
 
<a name="l00253"></a>00253         ShowMessage(_L(<span class="stringliteral">&quot;Error loading \naudio sample!&quot;</span>), ETrue);
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   264
 
<a name="l00254"></a>00254         iBufferOK = EFalse;
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<a name="l00255"></a>00255         }
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   266
 
<a name="l00256"></a>00256     audiofile.Close();
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<a name="l00257"></a>00257     }
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<a name="l00258"></a>00258
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diff changeset 
   269
 
<a name="l00259"></a>00259
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   270
 
<a name="l00260"></a>00260 <span class="comment">// ----------------------------------------------------------------------------</span>
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   271
 
<a name="l00261"></a>00261 <span class="comment">// CAudioStreamEngine::SaveAudioFileL()</span>
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<a name="l00262"></a>00262 <span class="comment">//</span>
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   273
 
<a name="l00263"></a>00263 <span class="comment">// saves the audio data in the buffer into a file</span>
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   274
 
<a name="l00264"></a>00264 <span class="comment">// ----------------------------------------------------------------------------</span>
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<a name="l00265"></a><a class="code" href="class_c_audio_stream_engine.html#af2c0f47a5bca2d3d960ea1433696b376">00265</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#af2c0f47a5bca2d3d960ea1433696b376">CAudioStreamEngine::SaveAudioFileL</a>()
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<a name="l00266"></a>00266     {
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<a name="l00267"></a>00267     <span class="keywordflow">if</span> (!iBufferOK)
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<a name="l00268"></a>00268     {
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   279
 
<a name="l00269"></a>00269         <span class="comment">// In case the encoding was changed between recording and trying to save the file</span>
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<a name="l00270"></a>00270         ShowMessage(_L(<span class="stringliteral">&quot;Recorded buffer does not \nmatch current encoding.&quot;</span>), ETrue);
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<a name="l00271"></a>00271         ShowMessage(_L(<span class="stringliteral">&quot;\nPlease re-record and \ntry again.&quot;</span>), EFalse);
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<a name="l00272"></a>00272         <span class="keywordflow">return</span>;
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<a name="l00273"></a>00273     }
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<a name="l00274"></a>00274     RFileWriteStream audiofile;
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<a name="l00275"></a>00275
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<a name="l00276"></a>00276     <span class="comment">// Check for free space for saving the sample</span>
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<a name="l00277"></a>00277     TVolumeInfo volinfo;
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<a name="l00278"></a>00278     TInt err=iFs.Volume(volinfo,EDriveC);
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<a name="l00279"></a>00279     <span class="keywordflow">if</span> ( volinfo.iFree&lt;(iFrameCount*iFrameSize))
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<a name="l00280"></a>00280         {
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   291
 
<a name="l00281"></a>00281         <span class="comment">// Not enough free space on drive for saving, report and exit</span>
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<a name="l00282"></a>00282         ShowMessage(_L(<span class="stringliteral">&quot;Cannot save file:\nnot enough space!&quot;</span>), ETrue);
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<a name="l00283"></a>00283         <span class="keywordflow">return</span>;
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<a name="l00284"></a>00284         }
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<a name="l00285"></a>00285
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<a name="l00286"></a>00286     TFileName fileName;
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<a name="l00287"></a>00287     fileName.Copy(iAudioFilePath);
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<a name="l00288"></a>00288     fileName.Append(iAudioFile);
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<a name="l00289"></a>00289     err = audiofile.Replace(iFs, fileName, EFileWrite|EFileStream);
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<a name="l00290"></a>00290     <span class="keywordflow">if</span> (err==KErrNone)
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<a name="l00291"></a>00291         {
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<a name="l00292"></a>00292         <span class="keywordflow">if</span> (iUseAMR)
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<a name="l00293"></a>00293             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   304
 
<a name="l00294"></a>00294                 <span class="comment">// Write the six-byte AMR header, so that the file can be used by other</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   305
 
<a name="l00295"></a>00295                 <span class="comment">// applications as well.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   306
 
<a name="l00296"></a>00296                 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; KAMRHeaderLength; i++)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   307
 
<a name="l00297"></a>00297                     audiofile.WriteUint8L(KAMRNBHeader[i]);
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   308
 
<a name="l00298"></a>00298             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   309
 
<a name="l00299"></a>00299
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   310
 
<a name="l00300"></a>00300         <span class="comment">// File opened ok, proceed writing.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   311
 
<a name="l00301"></a>00301         <span class="comment">// Write audio data directly from iStreamBuffer</span>
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   312
 
<a name="l00302"></a>00302         <span class="keywordflow">for</span> (TUint idx=iStreamStart; idx&lt;=iStreamEnd; idx++)<span class="comment">//iFrameCount; idx++)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   313
 
<a name="l00303"></a>00303             {
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   314
 
<a name="l00304"></a>00304             audiofile.WriteL(GetFrame(idx));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   315
 
<a name="l00305"></a>00305             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   316
 
<a name="l00306"></a>00306         ShowMessage(_L(<span class="stringliteral">&quot;Saving complete!&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   317
 
<a name="l00307"></a>00307         }
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   318
 
<a name="l00308"></a>00308     <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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         <span class="comment">// failed to open file</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   321
 
<a name="l00311"></a>00311         ShowMessage(_L(<span class="stringliteral">&quot;Error saving \naudio sample!&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   322
 
<a name="l00312"></a>00312         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   323
 
<a name="l00313"></a>00313     audiofile.Close();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   324
 
<a name="l00314"></a>00314     }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   325
 
<a name="l00315"></a>00315
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   326
 
<a name="l00316"></a>00316 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   327
 
<a name="l00317"></a>00317 <span class="comment">// CAudioStreamEngine::SetEncodingL(TBool aAmr)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   328
 
<a name="l00318"></a>00318 <span class="comment">//</span>
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">// If argument is ETrue, AMR-NB encoding will be used in audio input/output.</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="comment">// If EFalse, the default PCM is used. If the platform does not support AMR-NB,</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   331
 
<a name="l00321"></a>00321 <span class="comment">// PCM will be used no matter what the argument&#39;s value is.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   332
 
<a name="l00322"></a>00322 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
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parents:
diff changeset 
   333
 
<a name="l00323"></a><a class="code" href="class_c_audio_stream_engine.html#a939d7fb72ca466a389e413d680faafcd">00323</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_engine.html#a939d7fb72ca466a389e413d680faafcd">CAudioStreamEngine::SetEncodingL</a>(TBool aAmr)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   334
 
<a name="l00324"></a>00324     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   335
 
<a name="l00325"></a>00325     <span class="comment">// Act only if the new encoding differs from the current one</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   336
 
<a name="l00326"></a>00326     <span class="keywordflow">if</span> (iUseAMR != aAmr)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   337
 
<a name="l00327"></a>00327         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   338
 
<a name="l00328"></a>00328         iUseAMR = aAmr;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   339
 
<a name="l00329"></a>00329         <span class="keywordflow">if</span> (iUseAMR)
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             <span class="comment">// Try to set AMR-NB encoding, this will indicate whether it is supported</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   342
 
<a name="l00332"></a>00332             <span class="comment">// by the platform or not.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   343
 
<a name="l00333"></a>00333             TRAPD(err, iInputStream-&gt;SetDataTypeL(KMMFFourCCCodeAMR));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   344
 
<a name="l00334"></a>00334             <span class="keywordflow">if</span> (err != KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   345
 
<a name="l00335"></a>00335                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   346
 
<a name="l00336"></a>00336                 ShowMessage(_L(<span class="stringliteral">&quot;AMR-NB not supported,\nusing PCM.&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   347
 
<a name="l00337"></a>00337                 iCurrentEncoding = iDefaultEncoding;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   348
 
<a name="l00338"></a>00338                 iUseAMR = EFalse;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   349
 
<a name="l00339"></a>00339                 <span class="comment">// We do not need to invalidate the buffer or change buffer settings, </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   350
 
<a name="l00340"></a>00340                 <span class="comment">// since the encoding was not changed -&gt; just return.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   351
 
<a name="l00341"></a>00341                 <span class="keywordflow">return</span>;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   352
 
<a name="l00342"></a>00342                 }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   353
 
<a name="l00343"></a>00343             <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   354
 
<a name="l00344"></a>00344                 {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   355
 
<a name="l00345"></a>00345                 iCurrentEncoding = KMMFFourCCCodeAMR;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   356
 
<a name="l00346"></a>00346                 iAudioFile.Zero();  <span class="comment">// Empty the audio file name                </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   357
 
<a name="l00347"></a>00347                 iAudioFile.Append(KAudioFileAMR);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   358
 
<a name="l00348"></a>00348                 iFrameCount = KFrameCountAMR;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   359
 
<a name="l00349"></a>00349                 iFrameSize = KFrameSizeAMR;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   360
 
<a name="l00350"></a>00350                 ShowMessage(_L(<span class="stringliteral">&quot;Encoding set to AMR-NB.&quot;</span>), ETrue);
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             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   363
 
<a name="l00353"></a>00353         <span class="keywordflow">else</span>
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="comment">// If we get here, the encoding has previously been changed to AMR. Switch back to</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   366
 
<a name="l00356"></a>00356             <span class="comment">// PCM.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   367
 
<a name="l00357"></a>00357             iCurrentEncoding = iDefaultEncoding;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   368
 
<a name="l00358"></a>00358             iAudioFile.Zero();  <span class="comment">// Empty the audio file name                </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   369
 
<a name="l00359"></a>00359             iAudioFile.Append(KAudioFilePCM);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   370
 
<a name="l00360"></a>00360             iFrameCount = KFrameCountPCM;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   371
 
<a name="l00361"></a>00361             iFrameSize = KFrameSizePCM;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   372
 
<a name="l00362"></a>00362             ShowMessage(_L(<span class="stringliteral">&quot;Encoding set to PCM.&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   373
 
<a name="l00363"></a>00363             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   374
 
<a name="l00364"></a>00364
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   375
 
<a name="l00365"></a>00365         <span class="comment">// Make sure the user re-records or reloads the audio file, so that we do not </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   376
 
<a name="l00366"></a>00366         <span class="comment">// accidentally try to play PCM data using AMR or vice versa.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   377
 
<a name="l00367"></a>00367         iBufferOK = EFalse;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   378
 
<a name="l00368"></a>00368         <span class="keywordflow">if</span> (iStreamBuffer) <span class="keyword">delete</span> iStreamBuffer;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   379
 
<a name="l00369"></a>00369         iStreamBuffer = NULL; <span class="comment">// In case the following NewL leaves</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   380
 
<a name="l00370"></a>00370         iStreamBuffer = HBufC8::NewMaxL(iFrameSize * iFrameCount);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   381
 
<a name="l00371"></a>00371         iStreamStart=0;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   382
 
<a name="l00372"></a>00372         iStreamEnd=iFrameCount - 1;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   383
 
<a name="l00373"></a>00373         }
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
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   386
 
<a name="l00376"></a>00376 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   387
 
<a name="l00377"></a>00377 <span class="comment">// CAudioStreamEngine::ShowMessage(</span>
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">//     const TDesC&amp; aMsg, TBool aReset=EFalse)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   389
 
<a name="l00379"></a>00379 <span class="comment">//</span>
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">// displays text referenced by aMsg in the label, will append the aMsg in the </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   391
 
<a name="l00381"></a>00381 <span class="comment">// existing text in label if aReset is EFalse, otherwise will reset the label </span>
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">// text.</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="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   394
 
<a name="l00384"></a>00384 <span class="keywordtype">void</span> CAudioStreamEngine::ShowMessage(<span class="keyword">const</span> TDesC&amp; aMsg, TBool aReset=EFalse)
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="keywordflow">if</span> (aReset)     <span class="comment">// if ETrue, clear the message on the label prior to output</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   397
 
<a name="l00387"></a>00387         iMsg.Zero();
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   398
 
<a name="l00388"></a>00388     iMsg.Append(aMsg);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   399
 
<a name="l00389"></a>00389     TRAPD(error, iAppUi-&gt;GetView()-&gt;<a class="code" href="class_c_audio_stream_view.html#a173b6a9750b0d64f626617fa2809b3c5">ShowMessageL</a>(iMsg));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   400
 
<a name="l00390"></a>00390     PanicIfError(error);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   401
 
<a name="l00391"></a>00391     }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   402
 
<a name="l00392"></a>00392
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   403
 
<a name="l00393"></a>00393 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   404
 
<a name="l00394"></a>00394 <span class="comment">// TPtr8&amp; CAudioStreamEngine::GetFrame(TUint aFrameIdx)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   405
 
<a name="l00395"></a>00395 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   406
 
<a name="l00396"></a>00396 <span class="comment">// Returns a modifiable pointer to a single frame inside the audio buffer </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   407
 
<a name="l00397"></a>00397 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   408
 
<a name="l00398"></a>00398 TPtr8&amp; CAudioStreamEngine::GetFrame(TUint aFrameIdx)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   409
 
<a name="l00399"></a>00399     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   410
 
<a name="l00400"></a>00400       __ASSERT_ALWAYS(aFrameIdx &lt; iFrameCount,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   411
 
<a name="l00401"></a>00401                                     User::Panic(_L(<span class="stringliteral">&quot;AudioStreamEx&quot;</span>), 1));
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       iFramePtr.Set((TUint8*)(iStreamBuffer-&gt;Ptr() + (aFrameIdx * iFrameSize)),
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   414
 
<a name="l00404"></a>00404                                  iFrameSize,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   415
 
<a name="l00405"></a>00405                                  iFrameSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   416
 
<a name="l00406"></a>00406       <span class="keywordflow">return</span> iFramePtr;
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
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">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   420
 
<a name="l00410"></a>00410 <span class="comment">// TPtr8&amp; CAudioStreamEngine::GetPlaybackFrames(TUint aLastFrame)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   421
 
<a name="l00411"></a>00411 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   422
 
<a name="l00412"></a>00412 <span class="comment">// Returns a modifiable pointer to the requested frames inside the audio buffer</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   423
 
<a name="l00413"></a>00413 <span class="comment">// (from the first frame to aLastFrame). </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   424
 
<a name="l00414"></a>00414 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   425
 
<a name="l00415"></a>00415 TPtr8&amp; CAudioStreamEngine::GetPlaybackFrames(TUint aLastFrame)
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     __ASSERT_ALWAYS(aLastFrame &lt; iFrameCount,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   428
 
<a name="l00418"></a>00418                                 User::Panic(_L(<span class="stringliteral">&quot;AudioStreamEx&quot;</span>), 2));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   429
 
<a name="l00419"></a>00419
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   430
 
<a name="l00420"></a>00420     iFramePtr.Set((TUint8*)(iStreamBuffer-&gt;Ptr()),
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   431
 
<a name="l00421"></a>00421                                  (aLastFrame + 1) * iFrameSize,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   432
 
<a name="l00422"></a>00422                                  (aLastFrame + 1) * iFrameSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   433
 
<a name="l00423"></a>00423     <span class="keywordflow">return</span> iFramePtr;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   434
 
<a name="l00424"></a>00424     }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   435
 
<a name="l00425"></a>00425
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   436
 
<a name="l00426"></a>00426
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   437
 
<a name="l00427"></a>00427 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   438
 
<a name="l00428"></a>00428 <span class="comment">// MMdaAudioInputStream callbacks (MMdaAudioInputStreamCallback)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   439
 
<a name="l00429"></a>00429 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   440
 
<a name="l00430"></a>00430 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   441
 
<a name="l00431"></a>00431 <span class="comment">// CAudioStreamEngine::MaiscOpenComplete(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   442
 
<a name="l00432"></a>00432 <span class="comment">//     TInt aError)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   443
 
<a name="l00433"></a>00433 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   444
 
<a name="l00434"></a>00434 <span class="comment">// called upon completion of CMdaAudioInputStream::Open(),</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   445
 
<a name="l00435"></a>00435 <span class="comment">// if the stream was opened succesfully (aError==KErrNone), it&#39;s ready for use.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   446
 
<a name="l00436"></a>00436 <span class="comment">// upon succesful open, the first audio data block will be read from the input</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   447
 
<a name="l00437"></a>00437 <span class="comment">// stream.</span>
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">// ----------------------------------------------------------------------------</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> CAudioStreamEngine::MaiscOpenComplete(TInt aError)
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     <span class="keywordflow">if</span> (aError==KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   452
 
<a name="l00442"></a>00442         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   453
 
<a name="l00443"></a>00443         <span class="comment">// Input stream opened succesfully, set status</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   454
 
<a name="l00444"></a>00444         iInputStatus = EOpen;
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">// Set the data type (encoding)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   456
 
<a name="l00446"></a>00446         TRAPD(error, iInputStream-&gt;SetDataTypeL(iCurrentEncoding));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   457
 
<a name="l00447"></a>00447         PanicIfError(error);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   458
 
<a name="l00448"></a>00448
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   459
 
<a name="l00449"></a>00449         <span class="comment">// set stream input gain to maximum</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   460
 
<a name="l00450"></a>00450         iInputStream-&gt;SetGain(iInputStream-&gt;MaxGain());
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">// set stream priority to normal and time sensitive</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   462
 
<a name="l00452"></a>00452         iInputStream-&gt;SetPriority(EPriorityNormal, EMdaPriorityPreferenceTime);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   463
 
<a name="l00453"></a>00453         ShowMessage(_L(<span class="stringliteral">&quot;Recording...&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   464
 
<a name="l00454"></a>00454
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   465
 
<a name="l00455"></a>00455         <span class="comment">// Emtpy the buffer and issue ReadL() to read the first audio data block, </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   466
 
<a name="l00456"></a>00456         <span class="comment">// subsequent calls to ReadL() will be issued </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   467
 
<a name="l00457"></a>00457         <span class="comment">// in MMdaAudioInputStreamCallback::MaiscBufferCopied()</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   468
 
<a name="l00458"></a>00458         iStreamBuffer-&gt;Des().FillZ(iFrameCount * iFrameSize);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   469
 
<a name="l00459"></a>00459         iStreamIdx=0;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   470
 
<a name="l00460"></a>00460         TRAPD(error2, iInputStream-&gt;ReadL(GetFrame(iStreamIdx)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   471
 
<a name="l00461"></a>00461         PanicIfError(error2);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   472
 
<a name="l00462"></a>00462         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   473
 
<a name="l00463"></a>00463     <span class="keywordflow">else</span>
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">// input stream open failed</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   476
 
<a name="l00466"></a>00466         iInputStatus = ENotReady;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   477
 
<a name="l00467"></a>00467         ShowMessage(_L(<span class="stringliteral">&quot;Recording failed!&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   478
 
<a name="l00468"></a>00468         }
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">// ----------------------------------------------------------------------------</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="comment">// CAudioStreamEngine::MaiscBufferCopied(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   483
 
<a name="l00473"></a>00473 <span class="comment">//     TInt aError, const TDesC8&amp; aBuffer)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   484
 
<a name="l00474"></a>00474 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   485
 
<a name="l00475"></a>00475 <span class="comment">// called when a block of audio data has been read and is available at the </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   486
 
<a name="l00476"></a>00476 <span class="comment">// buffer reference *aBuffer.  calls to ReadL() will be issued until all blocks</span>
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">// in the audio data buffer (iStreamBuffer) are filled.</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="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   489
 
<a name="l00479"></a>00479 <span class="keywordtype">void</span> CAudioStreamEngine::MaiscBufferCopied(TInt aError, <span class="keyword">const</span> TDesC8&amp; <span class="comment">/*aBuffer*/</span>)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   490
 
<a name="l00480"></a>00480     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   491
 
<a name="l00481"></a>00481     <span class="keywordflow">if</span> (aError!=KErrNone)
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         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KMessage,<span class="stringliteral">&quot;Recording error: %d&quot;</span>);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   494
 
<a name="l00484"></a>00484         HBufC16* message = <a class="code" href="class_c_audio_stream_engine.html#a91672b67faf4b872f536dfa30a0cb087">HBufC16::NewLC</a>(KMessage().Length()+10);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   495
 
<a name="l00485"></a>00485         message-&gt;Des().AppendFormat(KMessage,aError);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   496
 
<a name="l00486"></a>00486         ShowMessage(*message, ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   497
 
<a name="l00487"></a>00487         CleanupStack::PopAndDestroy(); <span class="comment">// message</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   498
 
<a name="l00488"></a>00488         message = NULL;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   499
 
<a name="l00489"></a>00489         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   500
 
<a name="l00490"></a>00490
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   501
 
<a name="l00491"></a>00491     <span class="keywordflow">if</span> (aError==KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   502
 
<a name="l00492"></a>00492         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   503
 
<a name="l00493"></a>00493         <span class="comment">// stop recording if at the end of the buffer</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   504
 
<a name="l00494"></a>00494         iStreamIdx++;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   505
 
<a name="l00495"></a>00495         <span class="keywordflow">if</span> (iStreamIdx == iFrameCount)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   506
 
<a name="l00496"></a>00496             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   507
 
<a name="l00497"></a>00497             ShowMessage(_L(<span class="stringliteral">&quot;\nRecording complete!&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   508
 
<a name="l00498"></a>00498             iStreamEnd = iStreamIdx - 1;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   509
 
<a name="l00499"></a>00499             iBufferOK = ETrue;
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             <span class="comment">// Playback is complete:</span>
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">// Start the active object that will stop the stream</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   513
 
<a name="l00503"></a>00503             iStop-&gt;Start( TCallBack(BackgroundStop, <span class="keyword">this</span>) );
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   514
 
<a name="l00504"></a>00504             <span class="keywordflow">return</span>;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   515
 
<a name="l00505"></a>00505             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   516
 
<a name="l00506"></a>00506
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">// issue ReadL() for next frame     </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   518
 
<a name="l00508"></a>00508         TRAPD(error, iInputStream-&gt;ReadL(GetFrame(iStreamIdx)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   519
 
<a name="l00509"></a>00509         PanicIfError(error);
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> <span class="keywordflow">if</span> (aError==KErrAbort)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   522
 
<a name="l00512"></a>00512         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   523
 
<a name="l00513"></a>00513         <span class="comment">// Recording was aborted, due to call to CMdaAudioInputStream::Stop()</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   524
 
<a name="l00514"></a>00514         <span class="comment">// This KErrAbort will occur each time the Stop() method in this class is executed.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   525
 
<a name="l00515"></a>00515         <span class="comment">// Also, MaiscRecordComplete() will be called after exiting this method.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   526
 
<a name="l00516"></a>00516         iStreamEnd = iStreamIdx - 1;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   527
 
<a name="l00517"></a>00517         iBufferOK = ETrue;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   528
 
<a name="l00518"></a>00518         iInputStatus = ENotReady;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   529
 
<a name="l00519"></a>00519         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   530
 
<a name="l00520"></a>00520     <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   531
 
<a name="l00521"></a>00521         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   532
 
<a name="l00522"></a>00522         ShowMessage(_L(<span class="stringliteral">&quot;\nError reading data \nfrom input&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   533
 
<a name="l00523"></a>00523         iInputStatus = ENotReady;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   534
 
<a name="l00524"></a>00524         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   535
 
<a name="l00525"></a>00525     }
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 TInt CAudioStreamEngine::BackgroundStop( TAny *aStream )  <span class="comment">// static member function</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   539
 
<a name="l00529"></a>00529     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   540
 
<a name="l00530"></a>00530     ((<a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>*)aStream)-&gt;Stop();
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">return</span> EFalse;
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
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   544
 
<a name="l00534"></a>00534
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   545
 
<a name="l00535"></a>00535 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   546
 
<a name="l00536"></a>00536 <span class="comment">// CAudioStreamEngine::MaiscRecordComplete(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   547
 
<a name="l00537"></a>00537 <span class="comment">//     TInt aError)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   548
 
<a name="l00538"></a>00538 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   549
 
<a name="l00539"></a>00539 <span class="comment">// called when input stream is closed by CMdaAudioInputStream::Stop()</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   550
 
<a name="l00540"></a>00540 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   551
 
<a name="l00541"></a>00541 <span class="keywordtype">void</span> CAudioStreamEngine::MaiscRecordComplete(TInt aError)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   552
 
<a name="l00542"></a>00542     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   553
 
<a name="l00543"></a>00543     iInputStatus = ENotReady;
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> (aError==KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   555
 
<a name="l00545"></a>00545         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   556
 
<a name="l00546"></a>00546         <span class="comment">// normal stream closure</span>
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="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   559
 
<a name="l00549"></a>00549         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   560
 
<a name="l00550"></a>00550         <span class="comment">// completed with error(s)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   561
 
<a name="l00551"></a>00551         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   562
 
<a name="l00552"></a>00552     }
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
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   565
 
<a name="l00555"></a>00555 <span class="comment">// MMdaAudioOutputStream callbacks (MMdaAudioOutputStreamCallback)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   566
 
<a name="l00556"></a>00556
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   567
 
<a name="l00557"></a>00557 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   568
 
<a name="l00558"></a>00558 <span class="comment">// CAudioStreamEngine::MaoscOpenComplete(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   569
 
<a name="l00559"></a>00559 <span class="comment">//     TInt aError)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   570
 
<a name="l00560"></a>00560 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   571
 
<a name="l00561"></a>00561 <span class="comment">// called upon completion of CMdaAudioOutputStream::Open(),</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   572
 
<a name="l00562"></a>00562 <span class="comment">// if the stream was opened succesfully (aError==KErrNone), it&#39;s ready for use.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   573
 
<a name="l00563"></a>00563 <span class="comment">// upon succesful open, the first audio data block will be written to the </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   574
 
<a name="l00564"></a>00564 <span class="comment">// output stream.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   575
 
<a name="l00565"></a>00565 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   576
 
<a name="l00566"></a>00566 <span class="keywordtype">void</span> CAudioStreamEngine::MaoscOpenComplete(TInt aError)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   577
 
<a name="l00567"></a>00567     {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   578
 
<a name="l00568"></a>00568     <span class="keywordflow">if</span> (aError==KErrNone)
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         <span class="comment">// output stream opened succesfully, set status</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   581
 
<a name="l00571"></a>00571         iOutputStatus = EOpen;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   582
 
<a name="l00572"></a>00572         <span class="comment">// Set the data type (encoding). Should not fail, since we already</span>
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">// have tested support for this encoding in SetEncodingL with the </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="comment">// corresponding input stream!</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   585
 
<a name="l00575"></a>00575         TRAPD(error, iOutputStream-&gt;SetDataTypeL(iCurrentEncoding));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   586
 
<a name="l00576"></a>00576         PanicIfError(error);
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         <span class="comment">// set volume to 1/4th of stream max volume</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   589
 
<a name="l00579"></a>00579         iOutputStream-&gt;SetVolume(iOutputStream-&gt;MaxVolume()/2);
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">// set stream priority to normal and time sensitive</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   591
 
<a name="l00581"></a>00581         iOutputStream-&gt;SetPriority(EPriorityNormal,
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   592
 
<a name="l00582"></a>00582             EMdaPriorityPreferenceTime);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   593
 
<a name="l00583"></a>00583         ShowMessage(_L(<span class="stringliteral">&quot;Playing &quot;</span>), ETrue);
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         <span class="keywordflow">if</span> (iUseAMR)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   596
 
<a name="l00586"></a>00586             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   597
 
<a name="l00587"></a>00587             <span class="comment">// In case of AMR, the whole recorded/loaded buffer is played back at once, not frame by frame. </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="comment">// The buffer might not be fully recorded, so we will only play back the part</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="comment">// that is filled with data.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   600
 
<a name="l00590"></a>00590             iStreamIdx = iStreamEnd;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   601
 
<a name="l00591"></a>00591             TRAPD(error2, iOutputStream-&gt;WriteL(GetPlaybackFrames(iStreamEnd)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   602
 
<a name="l00592"></a>00592             PanicIfError(error2);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   603
 
<a name="l00593"></a>00593             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   604
 
<a name="l00594"></a>00594         <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   605
 
<a name="l00595"></a>00595             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   606
 
<a name="l00596"></a>00596             <span class="comment">// PCM needs to be played back frame by frame, otherwise some older devices might</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   607
 
<a name="l00597"></a>00597             <span class="comment">// run into buffer overflow situations.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   608
 
<a name="l00598"></a>00598             iStreamIdx = 0;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   609
 
<a name="l00599"></a>00599             TRAPD(error3, iOutputStream-&gt;WriteL(GetFrame(iStreamIdx)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   610
 
<a name="l00600"></a>00600             PanicIfError(error3);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   611
 
<a name="l00601"></a>00601             }
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     <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   614
 
<a name="l00604"></a>00604         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   615
 
<a name="l00605"></a>00605         <span class="comment">// output stream open failed</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   616
 
<a name="l00606"></a>00606         iOutputStatus = ENotReady;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   617
 
<a name="l00607"></a>00607         ShowMessage(_L(<span class="stringliteral">&quot;Playback failed!&quot;</span>), ETrue);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   618
 
<a name="l00608"></a>00608         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   619
 
<a name="l00609"></a>00609     }
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="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   622
 
<a name="l00612"></a>00612 <span class="comment">// CAudioStreamEngine::MaoscBufferCopied(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   623
 
<a name="l00613"></a>00613 <span class="comment">//     TInt aError, const TDesC8&amp; aBuffer)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   624
 
<a name="l00614"></a>00614 <span class="comment">//</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   625
 
<a name="l00615"></a>00615 <span class="comment">// called when a block of audio data has been written to MMF. calls to WriteL() </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   626
 
<a name="l00616"></a>00616 <span class="comment">// will be issued until all blocks in the audio data buffer (iStreamBuffer) are </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   627
 
<a name="l00617"></a>00617 <span class="comment">// written.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   628
 
<a name="l00618"></a>00618 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   629
 
<a name="l00619"></a>00619 <span class="keywordtype">void</span> CAudioStreamEngine::MaoscBufferCopied(TInt aError, <span class="keyword">const</span> TDesC8&amp; <span class="comment">/*aBuffer*/</span>)
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     <span class="keywordflow">if</span> (aError==KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   632
 
<a name="l00622"></a>00622         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   633
 
<a name="l00623"></a>00623         <span class="keywordflow">if</span> (iStreamIdx==iStreamEnd)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   634
 
<a name="l00624"></a>00624             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   635
 
<a name="l00625"></a>00625             ShowMessage(_L(<span class="stringliteral">&quot;\nPlayback complete!&quot;</span>), EFalse);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   636
 
<a name="l00626"></a>00626             <span class="comment">// Playback is complete:</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   637
 
<a name="l00627"></a>00627             <span class="comment">// Start the active object that will stop the stream</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   638
 
<a name="l00628"></a>00628             iStop-&gt;Start( TCallBack(BackgroundStop, <span class="keyword">this</span>) );
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   639
 
<a name="l00629"></a>00629             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   640
 
<a name="l00630"></a>00630         <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   641
 
<a name="l00631"></a>00631             {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   642
 
<a name="l00632"></a>00632             iStreamIdx++;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   643
 
<a name="l00633"></a>00633             TRAPD(error, iOutputStream-&gt;WriteL(GetFrame(iStreamIdx)));
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   644
 
<a name="l00634"></a>00634             PanicIfError(error);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   645
 
<a name="l00635"></a>00635             }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   646
 
<a name="l00636"></a>00636         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   647
 
<a name="l00637"></a>00637     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (aError==KErrAbort)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   648
 
<a name="l00638"></a>00638         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   649
 
<a name="l00639"></a>00639         <span class="comment">// Playing was aborted, due to call to CMdaAudioOutputStream::Stop().</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   650
 
<a name="l00640"></a>00640         <span class="comment">// MaoscRecordComplete() will be called after exiting this method.</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   651
 
<a name="l00641"></a>00641         iOutputStatus = ENotReady;
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>
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         ShowMessage(_L(<span class="stringliteral">&quot;\nError writing data \nto output&quot;</span>), EFalse);
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   656
 
<a name="l00646"></a>00646         iOutputStatus = ENotReady;
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   657
 
<a name="l00647"></a>00647         }
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
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   660
 
<a name="l00650"></a>00650
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   661
 
<a name="l00651"></a>00651 <span class="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   662
 
<a name="l00652"></a>00652 <span class="comment">// CAudioStreamEngine::MaoscPlayComplete(</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   663
 
<a name="l00653"></a>00653 <span class="comment">//     TInt aError)</span>
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">//</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="comment">// called when output stream is closed by CMdaAudioOutputStream::Stop() or if </span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   666
 
<a name="l00656"></a>00656 <span class="comment">// end of audio data has been reached, in this case KErrUnderflow will be </span>
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">// returned.</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="comment">// ----------------------------------------------------------------------------</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   669
 
<a name="l00659"></a>00659 <span class="keywordtype">void</span> CAudioStreamEngine::MaoscPlayComplete(TInt aError)
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     iOutputStatus = ENotReady;
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> (aError==KErrNone)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   673
 
<a name="l00663"></a>00663         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   674
 
<a name="l00664"></a>00664         <span class="comment">// normal stream closure</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   675
 
<a name="l00665"></a>00665         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   676
 
<a name="l00666"></a>00666     <span class="keywordflow">else</span> <span class="keywordflow">if</span> (aError==KErrUnderflow)
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   677
 
<a name="l00667"></a>00667         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   678
 
<a name="l00668"></a>00668         <span class="comment">// end of audio data stream was reached because of stream underflow,</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   679
 
<a name="l00669"></a>00669         }
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   680
 
<a name="l00670"></a>00670     <span class="keywordflow">else</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   681
 
<a name="l00671"></a>00671         {
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   682
 
<a name="l00672"></a>00672         <span class="comment">// completed with error(s)</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   683
 
<a name="l00673"></a>00673         }
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
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   686
 
<a name="l00676"></a>00676 <span class="comment">// END OF FILE</span>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   687
 
<a name="l00677"></a>00677
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   688
 
</pre></div></div>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   689
 
<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 
   690
 
<a href="http://www.doxygen.org/index.html">
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   691
 
<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 
   692
 
</body>
43e37759235e Week 12 contribution of example code"
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff changeset 
   693
 
</html>
MCL/sftools/depl/docscontent