Re: A midifile player for pd that can scratch ?

Am Freitag, 9. August 2024, 13:50:12 CEST schrieb Dan Wilcox:
> > Am Donnerstag, 8. August 2024, 20:00:15 CEST schrieb João Pais:
> >> how about a patch that reads the midifile and stores the data, which you
> >> then play as you wish? for an instalation I'm working on, I prepared a
> >> patch that reads a midifile with +50K events, puts them into a data
> >> structures "score", and then the info can be used for playback. It's not
> >> "one object", but it does what you wish.
> > 
> > Thanks, using data structures is a nice idea. Somehow once (15+ years ago)
> > used them but where slow doing tracing objects, but maybe the new
> > implementation is more usable.
> > 
> > The problem is how to handle noteon/off in reverse, there should be
> > different modes. So mabe I store it in reverse order in another text.
> 
> Maybe change the custom format to store on/off pairs with timestamps on both
> instead of MIDI-style delta on+duration? It would take more space but make
> reverse playback easier sine you don't have to seek backwards as much. For
> something more complex like this, I feel it's easier to build a custom
> sequencer with something like pdlua.
> 
Thanks for the hint.
Anyway, mostly I use the representation of notes with duration, not note on/
off,  So the idea was to a parameter to fade between using note on times and 
note off times in reverse and also limit the duration if tempo is zero.

So the idea read in a midifile and convert to two  textfiles with noteon times 
and noteoff times and duration so I can handle it better. without losing 
noteoffs or noteons.


> This reminds me of wanting to add a way to arbitrarily seek forward to a
> time with [text]...
> 
so handling absolute timestamps in a text sequencer would be cool too ;-).

mfg winfried

> --------
> Dan Wilcox
> danomatika.com <http://danomatika.com/>
> robotcowboy.com <http://robotcowboy.com/>


-- 
- ao.Univ.Prof. DI Winfried Ritsch 
- [email protected] - http://iem.at/ritsch
- Institut fuer Elektronische Musik und Akustik,  University of Music and 
Dramatic Art Graz
- mobil: ++43-664-2439369 Tel. ++43-316-389-3510 (3170)

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