Re: revision of Re: Importing other file formats

[Jeremiah Benham]

Richard,
I just tried exporting a few files in tuxguitar into musicxml and
importing that into denemo. It went rather well. There were a few
details that did not transfer over. With limited testing I found
notehead type, note ties, and tremlondo did not transfer over. I am
not sure if that tuxguitars fault or denemo. I am going to test more
later.

Thanks,
Jeremiah

On Thu, Mar 18, 2021 at 11:57 AM Richard Shann <richard@rshann.plus.com> wrote:
>
> This email bounced for me, and anyway I thought of a post-script to it
> so here it is, revised:
>
> On Thu, 2021-03-18 at 10:52 -0500, Jeremiah Benham wrote:
> > Richard,
> > I was wondering what the preferred method of inputting other file
> > formats is. I have been using tuxguitar to open up these files. I
> > then
> > would hide the tab because I want my students reading the music and
> > not looking at tabs. Tuxguitar can export to lilypond and midi. I
> > could probably import it with this but I was wondering how I can go
> > about it with less steps or if I can open it up denemo. I have been
> > looking over tuxguitar source code specifically the portion of the
> > gpx
> > file parser. My question is, If I were to write something to import
> > it
> > denemo should I make it a separate utility that converts it into
> > lilypond and then have denemo import it. Is that how the musicxml and
> > midi import works?
>
> Both musicxml and midi are imported by custom C-code routines (*).
> LilyPond
> is imported by a mixture of Scheme (a lexer-parser in Scheme) and C.
> I would forget about MIDI import if Tuxguitar can export LilyPond. But
> whether the Tux->Lily->Denemo route is feasible would depend on what
> sort of Lily output syntax is exported by Tux - the simplest thing
> would be to give it a try on a piece with the most complexity you're
> interested in and if creates valid LilyPond but fails in the import to
> Denemo just post the LilyPond syntax in case it's just a trivial
> problem.
>
> The other route would be to write a musicxml exporter for Tuxguitar - I
> just did this for Denemo, so I'm up to speed on how to write out
> MusicXML so I cold probably help there.
>
> Richard
> (*) to be more precise, import musicxml uses C routines to import the
> musicxml and then generates a scheme script which is executed to create
> the Denemo score. MIDI import is straight C.