still TODO

• implement running status (ugh)

elm midi

a bytes parser for MIDI (.mid) files.

Some ideas on what you can use this for:

• creating an animations for a song
• creating a rhythm game
• analyzing a song
• visualizing a song, e.g. in guitar tabs
• transforming a song to instructions that produce certain sounds. Watch this: https://www.youtube.com/watch/4rcnu8j1Xqk
• playing a song 🧠
• ...

A basic example for parsing a selected file using

• File.Select.file
• File.toBytes
• Bytes.Parser.run

update event =
    case event of
        MidiFileSelectClicked ->
            \state ->
                ( state
                , File.Select.file [ "audio/midi" ] MidiFileSelected
                )

        MidiFileSelected midiFile ->
            \state ->
                ( state
                , midiFile |> File.toBytes |> Task.perform SelectedMidiFileBytesReceived
                )

        SelectedMidiFileBytesReceived midiFileBytes ->
            \state ->
                ( { state
                    | midi =
                        midiFileBytes
                            |> Bytes.Parser.run Midi.file
                  }
                , Cmd.none
                )

→ complete example

not supported

• encoding

created with the help of

• this summary sheet
• this wonderful wiki
• this spec for all messages and this spec for general info about the format and some details
• these (old) midi.org reference tables
• this blog for a few message explanations
• the german wikipedia page for context and all events (for some reason the English version omits the specific events)

sample midi files for testing

• colxi/midi-parser-js
• davidluzgouveia/midi-parser