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<title>Audaspace: EffectReader Class Reference</title>
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<div id="projectname">Audaspace
 <span id="projectnumber">1.3.0</span>
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<div id="projectbrief">A high level audio library.</div>
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<div class="summary">
<a href="#pub-methods">Public Member Functions</a> |
<a href="#pro-attribs">Protected Attributes</a> |
<a href="classEffectReader-members.html">List of all members</a> </div>
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<div class="title">EffectReader Class Reference</div> </div>
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<p>This reader is a base class for all effect readers that take one other reader as input.
<a href="classEffectReader.html#details">More...</a></p>
<p><code>#include <<a class="el" href="EffectReader_8h_source.html">EffectReader.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for EffectReader:</div>
<div class="dyncontent">
<div class="center"><img src="classEffectReader__inherit__graph.png" border="0" usemap="#EffectReader_inherit__map" alt="Inheritance graph"/></div>
<map name="EffectReader_inherit__map" id="EffectReader_inherit__map">
<area shape="rect" title="This reader is a base class for all effect readers that take one other reader as input." alt="" coords="123,259,223,285"/>
<area shape="rect" href="classADSRReader.html" title="This class is an ADSR filters." alt="" coords="301,5,403,32"/>
<area shape="rect" href="classBaseIIRFilterReader.html" title="This class is a base class for infinite impulse response filters." alt="" coords="281,56,423,83"/>
<area shape="rect" href="classChannelMapperReader.html" title="This class maps a sound source's channels to a specific output channel count." alt="" coords="271,107,433,133"/>
<area shape="rect" href="classConverterReader.html" title="This class converts a sound source from one to another format." alt="" coords="289,157,415,184"/>
<area shape="rect" href="classDelayReader.html" title="This class reads another reader and delays it." alt="" coords="303,208,401,235"/>
<area shape="rect" href="classFaderReader.html" title="This class fades another reader." alt="" coords="302,259,402,285"/>
<area shape="rect" href="classLimiterReader.html" title="This reader limits another reader in start and end times." alt="" coords="299,309,405,336"/>
<area shape="rect" href="classLoopReader.html" title="This class reads another reader and loops it." alt="" coords="304,360,400,387"/>
<area shape="rect" href="classPitchReader.html" title="This class reads another reader and changes it's pitch." alt="" coords="305,411,399,437"/>
<area shape="rect" href="classResampleReader.html" title="This is the base class for all resampling readers." alt="" coords="289,461,415,488"/>
<area shape="rect" href="classReverseReader.html" title="This class reads another reader from back to front." alt="" coords="296,512,408,539"/>
<area shape="rect" href="classIReader.html" title="This class represents a sound source as stream or as buffer which can be read for example by another ..." alt="" coords="5,259,75,285"/>
<area shape="rect" href="classCallbackIIRFilterReader.html" title="This class provides an interface for infinite impulse response filters via a callback filter function..." alt="" coords="481,31,648,57"/>
<area shape="rect" href="classIIRFilterReader.html" title="This class is for infinite impulse response filters with simple coefficients." alt="" coords="507,81,622,108"/>
<area shape="rect" href="classDynamicIIRFilterReader.html" title="This class is for dynamic infinite impulse response filters with simple coefficients that change depe..." alt="" coords="696,81,863,108"/>
<area shape="rect" href="classJOSResampleReader.html" title="This resampling reader uses Julius O." alt="" coords="490,436,639,463"/>
<area shape="rect" href="classLinearResampleReader.html" title="This resampling reader does simple first-order hold resampling." alt="" coords="483,487,646,513"/>
</map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a2d55c6b9a73180b67a4af6897ab9ad83"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a2d55c6b9a73180b67a4af6897ab9ad83">EffectReader</a> (std::shared_ptr< <a class="el" href="classIReader.html">IReader</a> > reader)</td></tr>
<tr class="memdesc:a2d55c6b9a73180b67a4af6897ab9ad83"><td class="mdescLeft"> </td><td class="mdescRight">Creates a new effect reader. <a href="#a2d55c6b9a73180b67a4af6897ab9ad83">More...</a><br /></td></tr>
<tr class="separator:a2d55c6b9a73180b67a4af6897ab9ad83"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6e0f0af0c5dbbc0c63dd413c80293af8"><td class="memItemLeft" align="right" valign="top"><a id="a6e0f0af0c5dbbc0c63dd413c80293af8"></a>
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a6e0f0af0c5dbbc0c63dd413c80293af8">~EffectReader</a> ()</td></tr>
<tr class="memdesc:a6e0f0af0c5dbbc0c63dd413c80293af8"><td class="mdescLeft"> </td><td class="mdescRight">Destroys the reader. <br /></td></tr>
<tr class="separator:a6e0f0af0c5dbbc0c63dd413c80293af8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a633b8c01babc0b8cdfb9bb0b91b2b516"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a633b8c01babc0b8cdfb9bb0b91b2b516">isSeekable</a> () const</td></tr>
<tr class="memdesc:a633b8c01babc0b8cdfb9bb0b91b2b516"><td class="mdescLeft"> </td><td class="mdescRight">Tells whether the source provides seeking functionality or not. <a href="#a633b8c01babc0b8cdfb9bb0b91b2b516">More...</a><br /></td></tr>
<tr class="separator:a633b8c01babc0b8cdfb9bb0b91b2b516"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a33297aeb697345439f4256fb9ac0e2ba"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a33297aeb697345439f4256fb9ac0e2ba">seek</a> (int position)</td></tr>
<tr class="memdesc:a33297aeb697345439f4256fb9ac0e2ba"><td class="mdescLeft"> </td><td class="mdescRight">Seeks to a specific position in the source. <a href="#a33297aeb697345439f4256fb9ac0e2ba">More...</a><br /></td></tr>
<tr class="separator:a33297aeb697345439f4256fb9ac0e2ba"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae628230020b2e85f02a62f8c54fb0983"><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#ae628230020b2e85f02a62f8c54fb0983">getLength</a> () const</td></tr>
<tr class="memdesc:ae628230020b2e85f02a62f8c54fb0983"><td class="mdescLeft"> </td><td class="mdescRight">Returns an approximated length of the source in samples. <a href="#ae628230020b2e85f02a62f8c54fb0983">More...</a><br /></td></tr>
<tr class="separator:ae628230020b2e85f02a62f8c54fb0983"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af1d48c9edfadd0ea892245975e2c9994"><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#af1d48c9edfadd0ea892245975e2c9994">getPosition</a> () const</td></tr>
<tr class="memdesc:af1d48c9edfadd0ea892245975e2c9994"><td class="mdescLeft"> </td><td class="mdescRight">Returns the position of the source as a sample count value. <a href="#af1d48c9edfadd0ea892245975e2c9994">More...</a><br /></td></tr>
<tr class="separator:af1d48c9edfadd0ea892245975e2c9994"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3d82581f492bb2cadf80bd466cb2aec5"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="structSpecs.html">Specs</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a3d82581f492bb2cadf80bd466cb2aec5">getSpecs</a> () const</td></tr>
<tr class="memdesc:a3d82581f492bb2cadf80bd466cb2aec5"><td class="mdescLeft"> </td><td class="mdescRight">Returns the specification of the reader. <a href="#a3d82581f492bb2cadf80bd466cb2aec5">More...</a><br /></td></tr>
<tr class="separator:a3d82581f492bb2cadf80bd466cb2aec5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2c0a347337dc390caec08acb8fde95ba"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a2c0a347337dc390caec08acb8fde95ba">read</a> (int &length, bool &eos, <a class="el" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a> *buffer)</td></tr>
<tr class="memdesc:a2c0a347337dc390caec08acb8fde95ba"><td class="mdescLeft"> </td><td class="mdescRight">Request to read the next length samples out of the source. <a href="#a2c0a347337dc390caec08acb8fde95ba">More...</a><br /></td></tr>
<tr class="separator:a2c0a347337dc390caec08acb8fde95ba"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classIReader"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classIReader')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classIReader.html">IReader</a></td></tr>
<tr class="memitem:a3489c23855da532dd3a10cfae78bc899 inherit pub_methods_classIReader"><td class="memItemLeft" align="right" valign="top"><a id="a3489c23855da532dd3a10cfae78bc899"></a>
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classIReader.html#a3489c23855da532dd3a10cfae78bc899">~IReader</a> ()</td></tr>
<tr class="memdesc:a3489c23855da532dd3a10cfae78bc899 inherit pub_methods_classIReader"><td class="mdescLeft"> </td><td class="mdescRight">Destroys the reader. <br /></td></tr>
<tr class="separator:a3489c23855da532dd3a10cfae78bc899 inherit pub_methods_classIReader"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a798b7d1356bd214d99dd05f521b248aa"><td class="memItemLeft" align="right" valign="top"><a id="a798b7d1356bd214d99dd05f521b248aa"></a>
std::shared_ptr< <a class="el" href="classIReader.html">IReader</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classEffectReader.html#a798b7d1356bd214d99dd05f521b248aa">m_reader</a></td></tr>
<tr class="memdesc:a798b7d1356bd214d99dd05f521b248aa"><td class="mdescLeft"> </td><td class="mdescRight">The reader to read from. <br /></td></tr>
<tr class="separator:a798b7d1356bd214d99dd05f521b248aa"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This reader is a base class for all effect readers that take one other reader as input. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="a2d55c6b9a73180b67a4af6897ab9ad83"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2d55c6b9a73180b67a4af6897ab9ad83">◆ </a></span>EffectReader()</h2>
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<td class="memname">EffectReader::EffectReader </td>
<td>(</td>
<td class="paramtype">std::shared_ptr< <a class="el" href="classIReader.html">IReader</a> > </td>
<td class="paramname"><em>reader</em></td><td>)</td>
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<p>Creates a new effect reader. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">reader</td><td>The reader to read from. </td></tr>
</table>
</dd>
</dl>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="ae628230020b2e85f02a62f8c54fb0983"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae628230020b2e85f02a62f8c54fb0983">◆ </a></span>getLength()</h2>
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<td class="memname">virtual int EffectReader::getLength </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns an approximated length of the source in samples. </p>
<dl class="section return"><dt>Returns</dt><dd>The length as sample count. May be negative if unknown. </dd></dl>
<p>Implements <a class="el" href="classIReader.html#a384465b5d988cc802702ae4bdc56ea85">IReader</a>.</p>
<p>Reimplemented in <a class="el" href="classJOSResampleReader.html#af6a9dde0ecba6e00ebf756c09155716c">JOSResampleReader</a>, <a class="el" href="classLinearResampleReader.html#a872a9c8b0dc14a2a1565d2ef89def2ad">LinearResampleReader</a>, <a class="el" href="classLimiterReader.html#a3096d0840b446584eab6947cb3ceef88">LimiterReader</a>, <a class="el" href="classLoopReader.html#a36704772c0c347f9dcd91df3dcf5e041">LoopReader</a>, <a class="el" href="classReverseReader.html#aa3de08a7fd7ba8c14b484757d53e6c20">ReverseReader</a>, and <a class="el" href="classDelayReader.html#ae8306bbf1926da20c7623e730528787e">DelayReader</a>.</p>
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<a id="af1d48c9edfadd0ea892245975e2c9994"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af1d48c9edfadd0ea892245975e2c9994">◆ </a></span>getPosition()</h2>
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<td class="memname">virtual int EffectReader::getPosition </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns the position of the source as a sample count value. </p>
<dl class="section return"><dt>Returns</dt><dd>The current position in the source. A negative value indicates that the position is unknown. </dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>The value returned doesn't always have to be correct for readers, especially after seeking. </dd></dl>
<p>Implements <a class="el" href="classIReader.html#a47a8f86fd242a02ff626eb506cdb319d">IReader</a>.</p>
<p>Reimplemented in <a class="el" href="classJOSResampleReader.html#af5c3427896b6d03bbd7fde4c4eed6c85">JOSResampleReader</a>, <a class="el" href="classLinearResampleReader.html#a77b79603b8c4877231e6447c98c8900e">LinearResampleReader</a>, <a class="el" href="classLimiterReader.html#a811778051474eba5659d8988f64f9d3c">LimiterReader</a>, <a class="el" href="classLoopReader.html#a7854357698f9a29e0f8e2650521dba8a">LoopReader</a>, <a class="el" href="classReverseReader.html#a15c19c4ac04b2302d8bf59c3c26aae3a">ReverseReader</a>, and <a class="el" href="classDelayReader.html#af473f47fa7bf23141a6d6878475c2838">DelayReader</a>.</p>
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<a id="a3d82581f492bb2cadf80bd466cb2aec5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3d82581f492bb2cadf80bd466cb2aec5">◆ </a></span>getSpecs()</h2>
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<td class="memname">virtual <a class="el" href="structSpecs.html">Specs</a> EffectReader::getSpecs </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Returns the specification of the reader. </p>
<dl class="section return"><dt>Returns</dt><dd>The <a class="el" href="structSpecs.html" title="Specification of a sound source.">Specs</a> structure. </dd></dl>
<p>Implements <a class="el" href="classIReader.html#aac4f3a14d42e5c4280488db98dd771b1">IReader</a>.</p>
<p>Reimplemented in <a class="el" href="classChannelMapperReader.html#a40cd391be1b9629f4cd2358fdd5c07b5">ChannelMapperReader</a>, <a class="el" href="classJOSResampleReader.html#a3bfb9323855ab14d5b3764ad121a2d9a">JOSResampleReader</a>, <a class="el" href="classLinearResampleReader.html#a54b689ae36e847ce9e2c7dd7c21d6a92">LinearResampleReader</a>, and <a class="el" href="classPitchReader.html#a1b91c28ae764081780b8151bcd44cb5f">PitchReader</a>.</p>
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<a id="a633b8c01babc0b8cdfb9bb0b91b2b516"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a633b8c01babc0b8cdfb9bb0b91b2b516">◆ </a></span>isSeekable()</h2>
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<td class="memname">virtual bool EffectReader::isSeekable </td>
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<td class="paramname"></td><td>)</td>
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<p>Tells whether the source provides seeking functionality or not. </p>
<dl class="section warning"><dt>Warning</dt><dd>This doesn't mean that the seeking always has to succeed. </dd></dl>
<dl class="section return"><dt>Returns</dt><dd>Always returns true for readers of buffering types. </dd></dl>
<p>Implements <a class="el" href="classIReader.html#acf13bbdc14e680c21122981f7d3bf6be">IReader</a>.</p>
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<a id="a2c0a347337dc390caec08acb8fde95ba"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2c0a347337dc390caec08acb8fde95ba">◆ </a></span>read()</h2>
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<td class="memname">virtual void EffectReader::read </td>
<td>(</td>
<td class="paramtype">int & </td>
<td class="paramname"><em>length</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool & </td>
<td class="paramname"><em>eos</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="Audaspace_8h.html#aa0798f7ea0975b143a1d9deac8c05d43">sample_t</a> * </td>
<td class="paramname"><em>buffer</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Request to read the next length samples out of the source. </p>
<p>The buffer supplied has the needed size. </p><dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir">[in,out]</td><td class="paramname">length</td><td>The count of samples that should be read. Shall contain the real count of samples after reading, in case there were only fewer samples available. A smaller value also indicates the end of the reader. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">eos</td><td>End of stream, whether the end is reached or not. </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">buffer</td><td>The pointer to the buffer to read into. </td></tr>
</table>
</dd>
</dl>
<p>Implements <a class="el" href="classIReader.html#aef6fa21dfb71d3065fb14517bf0f24d5">IReader</a>.</p>
<p>Reimplemented in <a class="el" href="classChannelMapperReader.html#a00b7ab9a6314baa0ac592c22d6050251">ChannelMapperReader</a>, <a class="el" href="classJOSResampleReader.html#aec88430c49ea51013be38703aa253621">JOSResampleReader</a>, <a class="el" href="classBaseIIRFilterReader.html#a2d98cbf232c8bb7fda7b2a90b40e194a">BaseIIRFilterReader</a>, <a class="el" href="classADSRReader.html#a0ebcfda85da83401aa6de11e44c173d3">ADSRReader</a>, <a class="el" href="classLinearResampleReader.html#a1a777bd715c713208f2912ff17258bed">LinearResampleReader</a>, <a class="el" href="classFaderReader.html#a98da7a4171614e705cb6fa11afe28190">FaderReader</a>, <a class="el" href="classConverterReader.html#a00d02d1b528bd81c1d739d7c6ca15c62">ConverterReader</a>, <a class="el" href="classLimiterReader.html#a5142a68e8e108ebc8f3900c33947deb7">LimiterReader</a>, <a class="el" href="classLoopReader.html#adacc35583811828d7e735262cb73ce5e">LoopReader</a>, <a class="el" href="classReverseReader.html#a2d2ada2fac6ca264a90fbec576f5cbf2">ReverseReader</a>, and <a class="el" href="classDelayReader.html#a71a6e2965d61702ab0c710b68c87eccc">DelayReader</a>.</p>
</div>
</div>
<a id="a33297aeb697345439f4256fb9ac0e2ba"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a33297aeb697345439f4256fb9ac0e2ba">◆ </a></span>seek()</h2>
<div class="memitem">
<div class="memproto">
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">virtual void EffectReader::seek </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>position</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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</div><div class="memdoc">
<p>Seeks to a specific position in the source. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">position</td><td>The position to seek for measured in samples. To get from a given time to the samples you simply have to multiply the time value in seconds with the sample rate of the reader. </td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>This may work or not, depending on the actual reader. </dd></dl>
<p>Implements <a class="el" href="classIReader.html#ad9fc74bb6f4c2b1ecc0f75b7118c1458">IReader</a>.</p>
<p>Reimplemented in <a class="el" href="classJOSResampleReader.html#a24d49694688dec220f579903ff06a614">JOSResampleReader</a>, <a class="el" href="classLinearResampleReader.html#a689d0820dc0239907d46b78a002c071e">LinearResampleReader</a>, <a class="el" href="classLimiterReader.html#ac436d0ee225a108528569d5039b3685c">LimiterReader</a>, <a class="el" href="classLoopReader.html#a977ea2621c59d145d660ef8cb26bb964">LoopReader</a>, <a class="el" href="classReverseReader.html#a3a9a6d52127924cced0c52703e101f6b">ReverseReader</a>, and <a class="el" href="classDelayReader.html#a180f37a37b9b6c48c564ced598864a85">DelayReader</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>fx/<a class="el" href="EffectReader_8h_source.html">EffectReader.h</a></li>
</ul>
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