Re: calculation of the total duration of a score

[Jan-Peter Voigt]

Hi Marc,

you already received some solutions, but I stumbled across this thread 
and just want to quickly show my engraver - perhaps it also helps.

It doesn't read repeats right now, but this may be solved with 
\unfoldRepeats and the engraver placed in the midi-block.
The duration-markup-command relies on a global variable and a delayed 
stencil - this will not work with multiple scores, as only the duration 
of the last score will be displayed. But that is manageable, if needed.

HTH
Jan-Peter

Am 05.09.2016 um 11:01 schrieb Marc Hohl:
> Hi list,
>
> I have a couple of songs in my latest theatre project. It would be nice
> to have something like "duration: 3'22''" at the end of each song.
>
> Doing this by hand is straightforward:I generate a midi file that sounds
> accurate and let it play by timidity – but IMHO it would be less tedious
> and less error-prone if lilypond were capable of doing these
> calculations itself.
>
> Tempo indications and meter changes have to be taken into account, so
> this is probably doable with a special engraver only IIUC.
>
> Has someone else already done something like this? I have no experience
> in writing scheme engravers, so any hint would be highly appreciated.
>
> Thanks in advance,
>
> Marc
>
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calc-duration.ly
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