SuperCollider Piano for NeoVim

This plugin emulates the functionality found in digital audio work stations such as Ableton where a user may select a synth and press they computer keyboard's keys to play the synth. Except, this is a million times more cool because it is NeoVim and SuperCollider.

Requirements

• Nvim >= v0.7
• scnvim

Installation

• Using packer.nvim

use { 'madskjeldgaard/nvim-supercollider-piano' }

• Using vim-plug

Plug 'madskjeldgaard/nvim-supercollider-piano'

Load the extension after the call to scnvim.setup.

scnvim.setup{...}

scnvim.load_extension('piano')

Usage

Play your chosen synthdef

:SCNvimExt piano.play

Play a particular midinote (33)

:SCNvimExt piano.play 33

Optionally, you can use a particular duration in the command as well (0.75 in this case):

:SCNvimExt piano.play 63 0.75

This uses the \default synth by default. To use your own, make a SynthDef:

SynthDef(\mycoolsynth,{|out=0, amp=0.5, freq=444|
    var sig = SinOsc.ar(freq) * Env.perc.kr(gate:1);
    Out.ar(out, sig)
}).add

Then set it as the SynthDef used by piano (note that the forward slash in \mycoolsynth and/or the single quotes in 'mycoolsynth' are removed when you call it in the set command):

:SCNvimExt piano.set mycoolsynth

Now, the synth being used is \mycoolsynth:

:SCNvimExt piano.play 33

You can use piano.midi to play arbitrary MIDIdefs.
Arguments are: midinote duration channel.

:SCNvimExt piano.midi 48 0.5 0

Example mapping of F5

vim.keymap.set("n", "<F5>", ":SCNvimExt piano.midi 48 0.5 0<CR>")

Example MIDIdefs in SuperCollider

MIDIdef.noteOn(\myNoteOn, {
	|vel,num,chan|
	("on " ++ [num,chan]).postln;
});
MIDIdef.noteOff(\myNoteOff, {
	|vel,num,chan|
	("off " ++ [num,chan]).postln;
});

Configuration

The extension will receive its own configuration as well as the user config. It is acceptable to modify the user config if necessary, and some extensions might only be a "preset" of a user config.

The extension's own configuration is defined in the table given to scnvim.setup.

scnvim.setup{
  extensions = {
    piano = {
      default_synth = [['mycoolsynth']]
      note_dur = 0.5
    },
  },
}