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From: | Auto mailings of changes to Lily Issues via Testlilyissues-auto |
Subject: | [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] Ticket 665 discussion |
Date: | Tue, 16 Oct 2018 15:08:54 -0000 |
Jan-Peter Voigt has done some work on this. He wrote on the LilyPond developer mailing list on 2018/10/16:
I wrote a rudimentary engraver-based solution last year which is
waiting for clean-up and completion to support MEI, MusicXML, Humdrum,
LilyPond (!) and any other format for which an export-module with a
defined API exists.
https://github.com/jpvoigt/lilypond-export/The code in the project is able to export a MusicXML-File for a simple
lilypond-score. The resulting files are not always correct/functional so
this is more sketch of the idea. The base is an engraver that fetches
and collects events and on score-finalization calls the specified export
module with this (normalized) music collection.
The collection is some scheme-structure, but should probably be better a
normal LilyPond music-_expression_.
From this discussion thread: https://lists.gnu.org/archive/html/lilypond-devel/2018-10/msg00068.html
[issues:#665] Request: MusicXML backend
Status: Accepted
Labels: musicxml Bounty
Created: Thu Aug 21, 2008 04:18 AM UTC by Anonymous
Last Updated: Tue Oct 16, 2018 03:02 PM UTC
Owner: nobody
Originally created by: *anonymous
Originally created by: v.villenave
This feature has been proposed by Reinhold Kainhofer on -devel:
http://lists.gnu.org/archive/html/lilypond-devel/2008-06/msg00129.html
More recently, an user shared his experience on -user:
http://lists.gnu.org/archive/html/lilypond-user/2008-08/msg00838.html
Some highlights:
Han-Wen: "The last time we looked at this, I think the resolution was to
dump a music stream from LilyPond and postprocess that."
Reinhold: "unfortunately, the stream does only contain the musical content
in time-sorted order. MusicXML, however, also contains (or rather, can
contain) full information about page layout, breaks, object positioning and
similar settings [...] Since Lilypond produces a layout that is far
superior, I'd also like to include that information in
the xml files..."
Han-Wen: "you would probably have to use some sort of dual approach, where
you store the stream, label each event, and then you trace back the grobs
during output stage to their originating events. You can use the ordering
from the stream to output the XML elements in the correct order."
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