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<h2 class="title" style="clear: both"><a id="MidiInterop"></a>MIDI/Score Interoperability opcodes</h2>
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<p>
The following opcodes can be used to design instruments that work interchangably for real-time MIDI and score events:
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<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>
<a class="link" href="midichannelaftertouch.html" title="midichannelaftertouch">
<em class="citetitle">midichannelaftertouch</em>
</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="midichn.html" title="midichn">
<em class="citetitle">midichn</em>
</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="midicontrolchange.html" title="midicontrolchange">
<em class="citetitle">midicontrolchange</em>
</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="mididefault.html" title="mididefault">
<em class="citetitle">mididefault</em>
</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="midinoteoff.html" title="midinoteoff">
<em class="citetitle">midinoteoff</em>
</a>
</p>
</li>
<li class="listitem">
<p>
<a class="link" href="midinoteoncps.html" title="midinoteoncps">
<em class="citetitle">midinoteoncps</em>
</a>
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<p>
<a class="link" href="midinoteonkey.html" title="midinoteonkey">
<em class="citetitle">midinoteonkey</em>
</a>
</p>
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<li class="listitem">
<p>
<a class="link" href="midinoteonoct.html" title="midinoteonoct">
<em class="citetitle">midinoteonoct</em>
</a>
</p>
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<p>
<a class="link" href="midinoteonpch.html" title="midinoteonpch">
<em class="citetitle">midinoteonpch</em>
</a>
</p>
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<p>
<a class="link" href="midipitchbend.html" title="midipitchbend">
<em class="citetitle">midipitchbend</em>
</a>
</p>
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<p>
<a class="link" href="midipolyaftertouch.html" title="midipolyaftertouch">
<em class="citetitle">midipolyaftertouch</em>
</a>
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<li class="listitem">
<p><a class="link" href="midiprogramchange.html" title="midiprogramchange"><em class="citetitle">midiprogramchange</em></a>.</p>
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</ul>
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<p>
</p>
<div class="note" title="Adapting a score-activated Csound instrument." style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note: Adapting a score-activated Csound instrument.">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">Adapting a score-activated Csound instrument.</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
To adapt an ordinary Csound instrument designed for score activation for score/MIDI interoperability:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" type="disc">
<li class="listitem">
<p>Change all <a class="link" href="linen.html" title="linen"><em class="citetitle">linen</em></a>, <a class="link" href="linseg.html" title="linseg"><em class="citetitle">linseg</em></a>, and <a class="link" href="expseg.html" title="expseg"><em class="citetitle">expseg</em></a> opcodes to <a class="link" href="linenr.html" title="linenr"><em class="citetitle">linenr</em></a>, <a class="link" href="linsegr.html" title="linsegr"><em class="citetitle">linsegr</em></a>, and <a class="link" href="expsegr.html" title="expsegr"><em class="citetitle">expsegr</em></a>, respectively, except for a de-clicking or damping envelope. This will not materially change score-driven performance.</p>
</li>
<li class="listitem">
<p>Add the following lines at the beginning of the instrument definition:
</p>
<div class="informalexample">
<pre class="programlisting">
<span class="comment">; Ensures that a MIDI-activated instrument</span>
<span class="comment">; will have a positive p3 field.</span>
<span class="opc">mididefault</span> 60, p3
<span class="comment">; Puts MIDI key translated to cycles per</span>
<span class="comment">; second into p4, and MIDI velocity into p5</span>
<span class="opc">midinoteoncps</span> p4, p5</pre>
</div>
<p>
Obviously, <span class="emphasis"><em>midinoteoncps</em></span> could be changed to <span class="emphasis"><em>midinoteonoct</em></span> or any of the other options, and the choice of p-fields is arbitrary.</p>
</li>
</ul>
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<p>
</p>
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<div class="note" title="MIDI Realtime Input/Ouput command line options" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note: MIDI Realtime Input/Ouput command line options">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">MIDI Realtime Input/Ouput command line options</th>
</tr>
<tr>
<td align="left" valign="top">
<p>New <a class="link" href="CommandFlagsCategory.html#FlagsCatMinusUpperM"><em class="citetitle">MIDI I/O
flags</em></a> in Csound 5.02, can replace most uses of these MIDI
interop opcodes, and make usage easier.</p>
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