#ocaml on 2019-10-27 — irc logs at freenode.irclog.whitequark.org

2019-09-26 12:04 adrien changed the topic of #ocaml to: Discussions about the OCaml programming language | http://www.ocaml.org | OCaml 4.09 release notes: https://caml.inria.fr/pub/distrib/ocaml-4.09/notes/Changes | Try OCaml in your browser: http://try.ocamlpro.com | Public channel logs at http://irclog.whitequark.org/ocaml

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11:26 <cranix> is it possible in ocaml to execute two tasks delayed by exact amount of time?

11:26 <cranix> or it can not handle soft realtime?

11:26 <cranix> i'm thinking about simple music sequencer

11:26 <cranix> and need to delay sending notes by precise amount of time

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11:47 <ggole> Wouldn't you put them in a buffer with exact durations rather than trying to execute code at a certain time?

11:57 <cranix> ggole: buffer?

11:57 <cranix> i need to send MIDI messages at right times

11:57 <cranix> or maybe i do not know something

12:00 <ggole> I'm far from an audio programming expert, but I would expect a buffer to be involved somewhere. Your process might not even be running at the exact time you want something played.

12:01 <cranix> right

12:01 <cranix> there are some ocaml bindings for jackaudio

12:01 <cranix> but they are rather basic...

12:05 <ggole> It doesn't seem like an OCaml specific issue, really (unless perhaps the necessary functionality is missing from the bindings)

12:06 <ggole> Maybe ask around in an audio programming related channel

12:06 <cranix> i had a look at these bindings once again and they are rather about just sending messages

12:06 <cranix> good idea

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17:54 <Leonidas> in any case, ocaml is not really the best solution if you really need soft realtime (unless you want to write code that is very careful about allocation, which certainly is possible)

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19:48 <smondet[m]> cranix: to send MIDI messages with a gc-free thread ring buffer to Jack in OCaml I made/use this: https://gitlab.com/smondet/misuja

19:53 <smondet[m]> ** messages to Jack with a gc-free thread which talks to the ocaml side through a ring buffer (sounds more like a sentence :) )

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