CommonJS constants for MIDI status types and some basic helper functions (mtof, ftom)
npm i @lokua/midi-util --saveNOTE_OFF = 128
NOTE_ON = 144
POLYPHONIC_AFTERTOUCH = 160
CONTROL_CHANGE = 176
PROGRAM_CHANGE = 192
CHANNEL_AFTERTOUCH = 208
PITCHBEND = 224
SYSEX = 240
TIME_CODE = 241
SONG_POSITION = 242
SONG_SELECT = 243
TUNE_REQUEST = 246
END_OF_SYSEX = 247
CLOCK = 248
START = 250
CONTINUE = 251
STOP = 252
ACTIVE_SENSING = 254
SYSTEM_RESET = 255lookup readable status string by status code or vis a versa
// status -> type
128 -> 'noteOff'
// etc...
// type -> status
'noteOff' -> 128
// ...
// screaming type -> status
'NOTE_OFF' -> 128
// ...Check if a status byte or MIDI message is a certain status type
- isNoteOff
- isNoteOn
- isPolyphonicAftertouch
- isControlChange
- isProgramChange
- isChannelAftertouch
- isPitchBend
- isSysex
- isSongPosition
- isSongSelect
- isTuneRequest
- isEndOfSysex
- isClock
- isStart
- isContinue
- isStop
- isActiveSensing
- isSystemReset
Convert MIDI note number to frequency
Convert frequency to MIDI note number
Given a midi message status, returns the corresponding MIDI channel.
Returns the message type (ie. noteOn, controlChange) for a given status
Browser only. Converts the MIDIPortMap objects returned by
navigator.requestMIDIAccess into a hash of inputs and outputs arrays.
Find a port instance within an array of ports or a Map<any, { name: string }>
structure by exact string or RegExp. (Actually, this is really a generic
findObjectByName that works with arrays or maps, but, whatever).
Hint - use the i flag when using RegExp to make matching easier on yourself
This method also supports partial application so you can do the following:
const { getPorts, findPortByName } = require('@lokua/midi-util')
// this
const findMidiFighterTwister = findPortByName(/fighter\/twister/i)
const { inputs, outputs } = await getPorts()
const input = findMidiFighterTwister(inputs)
const output = findMidiFighterTwister(outputs)MIT