Link protocol

yaxu · 20 August 2021 10:28

Hi all, it'd be great to have link sync for Tidal.. I'm working on haskell bindings for the library via something called hylia. I've got the basics working but I don't really know what I'm doing so help would be much appreciated!

github.com/yaxu/hylia-haskell

Make a usable interface for the link protocol via hylia

opened 10:09AM - 20 Aug 21 UTC

yaxu

Ref tidal ticket https://github.com/tidalcycles/Tidal/issues/660 and short di…scussion here https://github.com/Ableton/link/issues/71#issuecomment-902476653 Lets make Haskell bindings to the lovely https://github.com/falkTX/Hylia I don't really know what I'm doing, but the current WIP in this repo seems to be basically functional. ```shell alex@teff:~/src/hylia-haskell$ cat examples/test.hs import Network.Hylia import Foreign import Foreign.Ptr import Foreign.C.Types main = alloca $ \timeinfoPtr -> do hylia <- hylia_create hylia_enable hylia (CBool 1) hylia_process hylia 1 timeinfoPtr timeinfo <- peek timeinfoPtr putStrLn $ show timeinfo hylia_set_beats_per_bar hylia (CDouble 3) hylia_process hylia 1 timeinfoPtr timeinfo <- peek timeinfoPtr putStrLn $ show timeinfo return () alex@teff:~/src/hylia-haskell$ cabal v1-install Warning: The package list for 'hackage.haskell.org' is 64 days old. Run 'cabal update' to get the latest list of available packages. Resolving dependencies... In order, the following will be installed: hylia-0.1.0.0 (reinstall) Warning: Note that reinstalls are always dangerous. Continuing anyway... Starting hylia-0.1.0.0 Building hylia-0.1.0.0 Completed hylia-0.1.0.0 alex@teff:~/src/hylia-haskell$ runhaskell examples/test.hs TimeInfo {beatsPerBar = 4.0, beatsPerMinute = 120.0, beat = 2.48e-4, phase = 2.48e-4, playing = 0} TimeInfo {beatsPerBar = 3.0, beatsPerMinute = 120.0, beat = 3.368e-3, phase = 3.368e-3, playing = 0} ```

julian · 20 August 2021 14:29

This is the initial code/discussion for the sclang implementation: https://github.com/supercollider/supercollider/pull/3351/
And this is the rebased branch a bit later, which was merged: https://github.com/supercollider/supercollider/pull/4331

maybe this helps?

yaxu · 20 August 2021 21:45

Thanks Julian, this does help a lot. It works differently to what the hylia wrapper library does, which is designed to run in the audio thread based on sample time rather than system clock time. I'll look into adding the calls that supercollider uses to hylia.

Tomas_Ciccola · 23 August 2021 19:24

Hi! love this effort! What would the difference between this and carabiner be besides a haskell implementation??

specht · 23 August 2021 20:37

Wow, this is great! Can't help much though, my coding skills are limited unfortunately.

yaxu · 26 August 2021 10:31

The carabiner approach relies on the local system clock not drifting. Using the local clock as the reference undermines a lot of the work that the link library does. It's also a bit more effort starting python processes etc.