On Fri, 27 Aug 2021 at 21:55, Nick Dokos <ndo...@gmail.com> wrote: > > Michael Maurer <maurer.mich...@gmail.com> writes: > > > On Thu, 26 Aug 2021 at 21:54, Nick Dokos <ndo...@gmail.com> wrote: > > >> > >> Michael Maurer <maurer.mich...@gmail.com> writes: > >> > >> > On Thu, 26 Aug 2021 at 15:03, Jonathan Gregory <j...@autistici.org> > >> > wrote: > >> >> > >> >> Hi > >> >> > >> >> On 26 Aug 2021, Michael Maurer wrote: > >> >> > >> >> > I've installed lilypond and customized ob-lilypond to use the > >> >> > appropriate helper programs, but although it generates & shows > >> >> > pdfs just fine, generating a midi file it does not. I execute > >> >> > tangle on the codeblock, and all I get is "No midi file > >> >> > generated so can't play!". org-version 9.4.6 emacs 27.2 Win 10 > >> >> > >> >> Can you also send a MWE of the code you're using to generate the > >> >> score? > >> >> > >> > > >> > I used a test file I copied over from Frescobaldi > >> > > >> > #+begin_src lilypond :file test.pdf > >> > \version "2.18.2" > >> > \score { > >> > \drums { > >> > \time 2/4 > >> > sn16 sn8 sn16 sn8 sn8:32 ~ > >> > sn8 sn8 sn4:32 ~ > >> > sn4 sn8 sn16 sn16 > >> > sn4 r4 > >> > } > >> > \layout { } > >> > \midi { } > >> > } > >> > #+end_src > >> > > >> > In Frescobaldi this gets me both midi-output and pdf. In Emacs with > >> > org it does say "Midi output to test.midi", but then there's that "no > >> > midi file generated" message. > >> > > >> > >> What happens if you save the contents of the source block into a file > >> and run lilypond on the file from the command line? > >> > > > > Both pdf and midi files get generated. Btw, ob-lilypond does generate > > the midi file as well, it just doesn't want to play it/recognize it. > > Maybe it's related to what helper app I've configured to open it? (but > > why that doesn't make sense, it's vlc btw). > > > > > > Oh, I thought that it did not generate a midi file at all. So you are > saying that the midi file *is* produced and you *can* play it from the > command line with vlc, correct? > > If that's the case, check the value of the variable > `org-babel-lilypond-midi-command' and see what happens when you invoke > that command on the midi file. In my case, the command is `xdg-open' > (I'm using Gnome on Fedora 33) and it opens Banshee to play it which > fails because of missing codecs. I installed the missing codecs and > `xdg-open foo.midi' sends the file to Banshee which can play it fine. > > Also check if `org-babel-lilypond-arrange-mode' is t or nil: behavior > is very different depending on that.
So out of curiosity I changed the entry for midi-player to random gibberish, and the same message pops up, "no midi file generated so can't play". Toggling arrange-mode has no effect. I can play the generated midi-file from the command line using vlc just fine.