Re: [haskell art] alsa-seq example
hi Thielmann, On 22-05-2015 12:01, Henning Thielemann wrote: On Fri, 22 May 2015, Miguel Negrão wrote: Does anyone have some example code of how to use alsa-seq to get midi events from a midi controller. This should help: https://hackage.haskell.org/package/alsa-seq-0.6.0.5/src/examples/dump.hs Running the code in that file doesn't produce any output after waiting for an event: when I move the sliders. I have the controller connected and it appears in the list-ports.hs example. I'm I supposed to change something in the code to point to the port of my controller ? Is portmidi perhaps easier to use ? I did get that working, but it doesn't seem to have any callback interface, it seems I have to poll it, and it is a bit low level too. It would be nice to have higher level MIDI device layer similar to SuperCollider. thanks, Miguel -- Read the whole topic here: Haskell Art: http://lurk.org/r/topic/3kWhGohFFF4Zx404LSnRKl To leave Haskell Art, email haskell-...@group.lurk.org with the following email subject: unsubscribe
Re: [haskell art] alsa-seq example
On Fri, 22 May 2015, Miguel Negrão wrote: Does anyone have some example code of how to use alsa-seq to get midi events from a midi controller. This should help: https://hackage.haskell.org/package/alsa-seq-0.6.0.5/src/examples/dump.hs -- Read the whole topic here: Haskell Art: http://lurk.org/r/topic/7J8abgRYlyLDdaIJRhD0ps To leave Haskell Art, email haskell-...@group.lurk.org with the following email subject: unsubscribe
Re: [haskell art] alsa-seq example
On Fri, 22 May 2015, Miguel Negrão wrote: On 22-05-2015 12:01, Henning Thielemann wrote: On Fri, 22 May 2015, Miguel Negrão wrote: Does anyone have some example code of how to use alsa-seq to get midi events from a midi controller. This should help: https://hackage.haskell.org/package/alsa-seq-0.6.0.5/src/examples/dump.hs Running the code in that file doesn't produce any output after waiting for an event: when I move the sliders. I have the controller connected and it appears in the list-ports.hs example. I'm I supposed to change something in the code to point to the port of my controller ? Have you connected the controller to the dump example using 'aconnect' or 'patchage' or the like? E.g. I have to run: $ aconnect 'SAMSON Graphite 49' Haskell-Dump Is portmidi perhaps easier to use ? I did get that working, but it doesn't seem to have any callback interface, it seems I have to poll it, and it is a bit low level too. I have no experience with PortMidi. JACK and the Haskell jack package are an alternative. It would be nice to have higher level MIDI device layer similar to SuperCollider. There is the midi-alsa package that maps alsa-seq events to events from the 'midi' package. Do you consider this higher level? There is also the reactive-balsa package that provides functional reactive programming of ALSA via tha reactive-banana framework. -- Read the whole topic here: Haskell Art: http://lurk.org/r/topic/KNUwMta2GVsvncKbRnTBz To leave Haskell Art, email haskell-...@group.lurk.org with the following email subject: unsubscribe
Re: [haskell art] alsa-seq example
On 22-05-2015 12:35, Henning Thielemann wrote: Running the code in that file doesn't produce any output after waiting for an event: when I move the sliders. I have the controller connected and it appears in the list-ports.hs example. I'm I supposed to change something in the code to point to the port of my controller ? Have you connected the controller to the dump example using 'aconnect' or 'patchage' or the like? E.g. I have to run: $ aconnect 'SAMSON Graphite 49' Haskell-Dump Ah, no I didn't do that (I have no idea of how alsa midi works, I only ever used MIDI from inside SuperCollider). Ok, after doing aconnect 'nanoKONTROL' Haskell-Dump I get input, so it seems to be working. Great !! I would prefer not to have to connect the nano to the program externally via bash, I suppose this can be done from inside the program also ? Would copying from these functions from reactive-balsa be the way to go ? connect :: [String] - [String] - ReaderT Handle IO () connect fromNames toNames = do _ - connectFrom = parseAddresses fromNames _ - connectTo = parseAddresses toNames return () connectFrom, connectTo :: Addr.T - ReaderT Handle IO Connect.T connectFrom from = Reader.ReaderT $ \h - Connect.createFrom (sequ h) (portPublic h) from connectTo to = Reader.ReaderT $ \h - Connect.createTo (sequ h) (portPublic h) to There is the midi-alsa package that maps alsa-seq events to events from the 'midi' package. Do you consider this higher level? There is also the reactive-balsa package that provides functional reactive programming of ALSA via tha reactive-banana framework. My next step after having MIDI working was going to be connecting it to reactive-banana so reactive-balsa looks to be exactly I was hoping for !!! Unfortunatelly it doesn't build currently[1] with the nix package manager (reactive-banana 0.7 vs 0.8, etc), so I will have to work a bit to get it to build... Thanks !! Miguel [1]http://hydra.cryp.to/build/865748/nixlog/2 -- Read the whole topic here: Haskell Art: http://lurk.org/r/topic/2gPhGHtnRMayFWTAHKFVqD To leave Haskell Art, email haskell-...@group.lurk.org with the following email subject: unsubscribe
