[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #4730 Patch: Do not output CC#7 events in MIDI on dynamic changes

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[issues:#4730] Patch: Do not output CC#7 events in MIDI on dynamic changes

Status: New
Created: Fri Jan 08, 2016 03:54 PM UTC by H T LilyPond
Last Updated: Fri Jan 08, 2016 03:54 PM UTC
Owner: nobody

Following up on my own comment in https://lists.gnu.org/archive/html/lilypond-user/2015-10/msg00098.html,

I've observed that LilyPond actually emits CC#7 events to a generated
MIDI file on dynamic (MIDI velocity) changes created by the
Dynamic_performer, but these CC#7 changes seem to always just set the
MIDI volume to 100 (in the range from 0 to 127). To me this looks like
a possible bug (and could be just a remnant of the implementation prior
to 2.14), but this is only my personal opinion...

I've tried to fix this defect to make the handling of MIDI CC#7 more consistent with how the other MIDI channel controls are handled (that is, avoid enforcing any "default" values on any controls).

(This is in preparation for a larger patch to follow for making all MIDI controls adjustable from within LilyPond code using context properties; for that change, it's best to first reduce any unnecessary automatic adjustment of the MIDI channel controls.)

The patch is available for review (with further technical information) at
https://codereview.appspot.com/277700043/.

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