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<div class="refentry" title="midiin">
<a id="midiin"></a>
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<a id="IndexMidiin" class="indexterm"></a>
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<h2>
<span class="refentrytitle">midiin</span>
</h2>
<p>midiin —
Returns a generic MIDI message received by the MIDI IN port.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp31025600"></a>
<h2>Description</h2>
<p>
Returns a generic MIDI message received by the MIDI IN port
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp31026360"></a>
<h2>Syntax</h2>
<pre class="synopsis">kstatus, kchan, kdata1, kdata2 <span class="command"><strong>midiin</strong></span></pre>
</div>
<div class="refsect1" title="Performance">
<a id="idp31027408"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kstatus</em></span> -- the type of MIDI message. Can be:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>128 (note off)</p>
</li>
<li class="listitem">
<p>144 (note on)</p>
</li>
<li class="listitem">
<p>160 (polyphonic aftertouch)</p>
</li>
<li class="listitem">
<p>176 (control change)</p>
</li>
<li class="listitem">
<p>192 (program change)</p>
</li>
<li class="listitem">
<p>208 (channel aftertouch)</p>
</li>
<li class="listitem">
<p>224 (pitch bend</p>
</li>
<li class="listitem">
<p>0 if no MIDI message are pending in the MIDI IN buffer</p>
</li>
</ul>
</div>
<p>
</p>
<p>
<span class="emphasis"><em>kchan</em></span> -- MIDI channel (1-16)
</p>
<p>
<span class="emphasis"><em>kdata1, kdata2</em></span> -- message-dependent data values
</p>
<p>
<span class="emphasis"><em>midiin</em></span> has no input arguments, because it reads at the MIDI in port implicitly. It works at k-rate. Normally (i.e., when no messages are pending) <span class="emphasis"><em>kstatus</em></span> is zero, only when MIDI data are present in the MIDI IN buffer, is <span class="emphasis"><em>kstatus</em></span> set to the type of the relevant messages.
</p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">Note</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
Be careful when using <span class="emphasis"><em>midiin</em></span> in low numbered instruments, since a MIDI note will launch additional instances of the instrument, resulting in duplicate events and weird behaviour. Use <a class="link" href="massign.html" title="massign"><em class="citetitle">massign</em></a> to direct MIDI note on messages to a different instrument or to disable triggering of instruments from MIDI.
</p>
</td>
</tr>
</table>
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</div>
<div class="refsect1" title="Examples">
<a id="idp31083232"></a>
<h2>Examples</h2>
<p>
Here is an example of the midiin opcode. It uses the file <a class="ulink" href="examples/midiin.csd" target="_top"><em class="citetitle">midiin.csd</em></a>.
</p>
<div class="example">
<a id="idp31084208"></a>
<p class="title">
<strong>Example 460. Example of the midiin opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
<span class="comment">; Audio out Audio in No messages</span>
-odac -iadc -d -M0 -+rtmidi=virtual <span class="comment">;;;RT audio I/O with MIDI in</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o midiin.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 10
<span class="ohdr">nchnls</span> <span class="op">=</span> 1
<span class="comment">; Example by schwaahed 2006</span>
<span class="ohdr">massign</span> 0, 130 <span class="comment">; make sure that all channels</span>
<span class="ohdr">pgmassign</span> 0, 130 <span class="comment">; and programs are assigned to test instr</span>
<span class="oblock">instr</span> 130
knotelength <span class="opc">init</span> 0
knoteontime <span class="opc">init</span> 0
kstatus, kchan, kdata1, kdata2 <span class="opc">midiin</span>
<span class="octrl">if</span> (kstatus <span class="op">==</span> 128) then
knoteofftime <span class="opc">times</span>
knotelength <span class="op">=</span> knoteofftime <span class="op">-</span> knoteontime
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\tnote# <span class="op">=</span> <span class="op">%</span>d, velocity <span class="op">=</span> <span class="op">%</span>d \\tNote OFF\\t<span class="op">%</span>f <span class="op">%</span>f\\n", 0, kstatus, kchan, kdata1,kdata2, knoteofftime, knotelength
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 144) then
knoteontime <span class="opc">times</span>
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\tnote# <span class="op">=</span> <span class="op">%</span>d, velocity <span class="op">=</span> <span class="op">%</span>d \\tNote ON\\t<span class="op">%</span>f\\n", 0, kstatus, kchan, kdata1, kdata2, knoteontime
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 160) then
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\tkdata1 <span class="op">=</span> <span class="op">%</span>d, kdata2 <span class="op">=</span> <span class="op">%</span>d \\tPolyphonic Aftertouch\\n", 0, kstatus, kchan, kdata1, kdata2
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 176) then
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\t CC <span class="op">=</span> <span class="op">%</span>d, value <span class="op">=</span> <span class="op">%</span>d \\tControl Change\\n", 0, kstatus, kchan, kdata1, kdata2
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 192) then
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\tkdata1 <span class="op">=</span> <span class="op">%</span>d, kdata2 <span class="op">=</span> <span class="op">%</span>d \\tProgram Change\\n", 0, kstatus, kchan, kdata1, kdata2
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 208) then
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\tkdata1 <span class="op">=</span> <span class="op">%</span>d, kdata2 <span class="op">=</span> <span class="op">%</span>d \\tChannel Aftertouch\\n", 0, kstatus, kchan, kdata1, kdata2
<span class="octrl">elseif</span> (kstatus <span class="op">==</span> 224) then
<span class="opc">printks</span> "kstatus<span class="op">=</span> <span class="op">%</span>d, kchan <span class="op">=</span> <span class="op">%</span>d, \\t ( data1 , kdata2 ) <span class="op">=</span> ( <span class="op">%</span>d, <span class="op">%</span>d )\\tPitch Bend\\n", 0, kstatus, kchan, kdata1, kdata2
<span class="octrl">endif</span>
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span>130 0 3600
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1" title="Credits">
<a id="idp31086448"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
<tr>
<td>Author: Gabriel Maldonado</td>
</tr>
<tr>
<td>Italy</td>
</tr>
<tr>
<td>1998</td>
</tr>
</table>
<p>
</p>
<p>New in Csound version 3.492</p>
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