<classSpec xmlns="http://www.tei-c.org/ns/1.0" rend="add" ident="att.midiInstrument" module="MEI.midi" type="atts">
<desc xml:lang="en">Attributes that record MIDI instrument information.</desc>
<constraintSpec ident="One_of_instrname_or_instrnum" scheme="schematron">
<constraint>
<sch:rule context="mei:*[@midi.instrname]">
<sch:assert test="not(@midi.instrnum)">Only one of @midi.instrname and @midi.instrnum
allowed.</sch:assert>
</sch:rule>
</constraint>
</constraintSpec>
<constraintSpec ident="One_of_patchname_or_patchnum" scheme="schematron">
<constraint>
<sch:rule context="mei:*[@midi.patchname]">
<sch:assert test="not(@midi.patchnum)">Only one of @midi.patchname and @midi.patchnum
allowed.</sch:assert>
</sch:rule>
</constraint>
</constraintSpec>
<attList>
<attDef ident="midi.instrnum" usage="opt">
<desc xml:lang="en">Captures the General MIDI instrument number. Use an integer for a 0-based value.
Use an integer followed by an "o" (oh) for a 1-based value.</desc>
<datatype>
<dataRef key="data.MIDIVALUE"/>
</datatype>
</attDef>
<attDef ident="midi.instrname" usage="opt">
<desc xml:lang="en">Provides a General MIDI label for the MIDI instrument.</desc>
<datatype>
<dataRef key="data.MIDINAMES"/>
</datatype>
</attDef>
<attDef ident="midi.pan" usage="opt">
<desc xml:lang="en">Sets the instrument’s position in a stereo field. Values of 0 and
1 both pan left, 127 and 128o both pan right, and 63 and 64o both pan to the center.
Positive percentage values pan to the right, negative ones to the left, and 0% pans
to the center.</desc>
<datatype>
<dataRef key="data.MIDIVALUE_PAN"/>
</datatype>
</attDef>
<attDef ident="midi.patchname" usage="opt">
<desc xml:lang="en">Records a non-General MIDI patch/instrument name.</desc>
<datatype>
<dataRef name="NMTOKEN"/>
</datatype>
</attDef>
<attDef ident="midi.patchnum" usage="opt">
<desc xml:lang="en">Records a non-General MIDI patch/instrument number.</desc>
<datatype>
<dataRef key="data.MIDIVALUE"/>
</datatype>
</attDef>
<attDef ident="midi.volume" usage="opt">
<desc xml:lang="en">Sets the instrument’s volume.</desc>
<datatype>
<dataRef key="data.MIDIVALUE_PERCENT"/>
</datatype>
</attDef>
</attList>
</classSpec>