filter

Documentation

Index

• type Filter
  • func Aftertouch() Filter
  • func And(filters ...Filter) Filter
  • func CC(controller int8) Filter
  • func Channel(ch int8) Filter
  • func NoteOff(key int8) Filter
  • func NoteOffVelocity(key int8) Filter
  • func NoteOn(key int8) Filter
  • func Or(filters ...Filter) Filter
  • func Pitchbend() Filter
  • func PolyAftertouch(key int8) Filter

Types

type Filter

type Filter func(msg midi.Message) bool

Filter is a function that returns true when a certain kind of MIDI message was found.

func Aftertouch

func Aftertouch() Filter

Aftertouch returns a Filter that triggers only for the aftertouch messages.

func And

func And(filters ...Filter) Filter

And returns a filter that is true if all of the given filters are true

func CC

func CC(controller int8) Filter

CC returns a Filter that triggers only for the given controller. If controller is < 0, any controller will trigger.

func Channel

func Channel(ch int8) Filter

Channel returns a Filter that triggers only for messages on the given MIDI channel. If ch is < 0, any channel will trigger.

func NoteOff

func NoteOff(key int8) Filter

NoteOff returns a Filter that triggers only for the given key. If key is < 0, any key will trigger.

func NoteOffVelocity

func NoteOffVelocity(key int8) Filter

NoteOffVelocity returns a Filter that triggers only for the given key. If key is < 0, any key will trigger.

func NoteOn

func NoteOn(key int8) Filter

NoteOn returns a Filter that triggers only for the given key. If key is < 0, any key will trigger.

func Or

func Or(filters ...Filter) Filter

Or returns a filter that is true if any of the given filters is true

func Pitchbend

func Pitchbend() Filter

Pitchbend returns a Filter that triggers only for the pitchbend messages > 0.

func PolyAftertouch

func PolyAftertouch(key int8) Filter

PolyAftertouch returns a Filter that triggers only for the polyaftertouch messages of the given key. If key is < 0, any key will trigger.