MIDI to FMF (flipper music file)

midi2fmf.py

from mido import MidiFile
import math

NOTES = ['C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B']
OCTAVES = list(range(11))
NOTES_IN_OCTAVE = len(NOTES)

def number_to_note(number: int) -> tuple:
	octave = number // NOTES_IN_OCTAVE
	note = NOTES[number % NOTES_IN_OCTAVE]

	return note, octave

mid = MidiFile('./HarryPotter.mid', clip=True)

notes = ""
bpm = 130

for msg in mid:
	msg_dict = msg.dict()

	if msg_dict["type"] == "set_tempo":
		bpm = math.floor(60000000 / msg_dict["tempo"])

	if msg_dict["type"] == "note_on" and msg_dict["time"] != 0:
		pause = str(round(3 / msg_dict["time"]))
		notes = notes + pause + "P, "

	if msg_dict["type"] == "note_off":
		pause = str(round(3 / msg_dict["time"]))
		note = number_to_note(msg_dict["note"])

		notes = notes + pause + note[0] + str(note[1]) + ", "

notes = notes[:-2]

format = """Filetype: Flipper Music Format
Version: 0
BPM: """ + str(bpm) + """
Duration: 12
Octave: 5
Notes: """ + notes

print(format)