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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">
<a id="idm281472914781544"></a>
<h2>Description</h2>
<p>
Returns a generic MIDI message received by the MIDI IN port
</p>
</div>
<div class="refsect1">
<a id="idm281472914780168"></a>
<h2>Syntax</h2>
<pre class="synopsis">kstatus, kchan, kdata1, kdata2 <span class="command"><strong>midiin</strong></span></pre>
</div>
<div class="refsect1">
<a id="idm281472914738104"></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" style="list-style-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" 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>
</div>
</div>
<div class="refsect1">
<a id="idm281472914725192"></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="idm281472914723336"></a>
<p class="title">
<strong>Example 543. 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>
<div class="refsect1">
<a id="idm281472738919528"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
<span class="c1">; Audio out Audio in No messages</span>
-odac -iadc -d -M0 -+rtmidi=virtual <span class="c1">;;;RT audio I/O with MIDI in</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o midiin.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">10</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">; Example by schwaahed 2006</span>
<span class="nb">massign</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">130</span> <span class="c1">; make sure that all channels</span>
<span class="nb">pgmassign</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">130</span> <span class="c1">; and programs are assigned to test instr</span>
<span class="kd">instr</span> <span class="nf">130</span>
k<span class="n">notelength</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">noteontime</span> <span class="nb">init</span> <span class="mi">0</span>
k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span> <span class="nb">midiin</span>
<span class="k">if</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">128</span><span class="p">)</span> <span class="k">then</span>
k<span class="n">noteofftime</span> <span class="nb">times</span>
k<span class="n">notelength</span> <span class="o">=</span> k<span class="n">noteofftime</span> <span class="o">-</span> k<span class="n">noteontime</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">tnote# = </span><span class="si">%d</span><span class="s">, velocity = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tNote OFF</span><span class="se">\\</span><span class="s">t%f %f</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span>k<span class="n">data2</span><span class="p">,</span> k<span class="n">noteofftime</span><span class="p">,</span> k<span class="n">notelength</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">144</span><span class="p">)</span> <span class="k">then</span>
k<span class="n">noteontime</span> <span class="nb">times</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">tnote# = </span><span class="si">%d</span><span class="s">, velocity = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tNote ON</span><span class="se">\\</span><span class="s">t%f</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span><span class="p">,</span> k<span class="n">noteontime</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">160</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">tkdata1 = </span><span class="si">%d</span><span class="s">, kdata2 = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tPolyphonic Aftertouch</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">176</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">t CC = </span><span class="si">%d</span><span class="s">, value = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tControl Change</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">192</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">tkdata1 = </span><span class="si">%d</span><span class="s">, kdata2 = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tProgram Change</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">208</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">tkdata1 = </span><span class="si">%d</span><span class="s">, kdata2 = </span><span class="si">%d</span><span class="s"> </span><span class="se">\\</span><span class="s">tChannel Aftertouch</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span>
<span class="k">elseif</span> <span class="p">(</span>k<span class="n">status</span> <span class="o">==</span> <span class="mi">224</span><span class="p">)</span> <span class="k">then</span>
<span class="nb">printks</span> <span class="s">"kstatus= </span><span class="si">%d</span><span class="s">, kchan = </span><span class="si">%d</span><span class="s">, </span><span class="se">\\</span><span class="s">t ( data1 , kdata2 ) = ( </span><span class="si">%d</span><span class="s">, </span><span class="si">%d</span><span class="s"> )</span><span class="se">\\</span><span class="s">tPitch Bend</span><span class="se">\\</span><span class="s">n"</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> k<span class="n">status</span><span class="p">,</span> k<span class="n">chan</span><span class="p">,</span> k<span class="n">data1</span><span class="p">,</span> k<span class="n">data2</span>
<span class="k">endif</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="nb">i</span><span class="mi">130</span> <span class="mi">0</span> <span class="mi">3600</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472914719112"></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>
</div>
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