ALTDEUS:BCのMusicboxMIDIからinoファイルのコードを一部生成

MIDItoIno_ABC_Musicbox.py

#ALTDEUS:BCのMusicboxのメロディーを演奏する
#ArduinoMega用
#54(note G0) - 29(note G2) 

import os
from operator import attrgetter
import mido 
from mido import MidiFile

MIDI_FILE = "Musicbox.mid"


mid = MidiFile(MIDI_FILE)

outText = ""
prevTime = 0
duration = 20
flam = 20

bn =0

notes = []

class Note:
    atime = 0
    noteNo = 0
    vel = 127
    def __init__(self, val1, val2, val3):
        self.atime = val1
        self.noteNo = val2
        self.vel = val3

for i, track in enumerate(mid.tracks):
    print('Track {}: {}'.format(i, track.name))
    absolute_time = 0
    for msg in track:
        if msg.type == 'set_tempo':
            tempo = msg.tempo
            print("temo is {0}".format(tempo))
        if msg.time > 0:
            absolute_time = absolute_time + mido.tick2second(msg.time,480,tempo)*1000

	    #note onのみ
        #if i == 0:
        if msg.type == 'note_on':
            if msg.velocity > 0:
                #print(absolute_time)
                curNote = 60-(msg.note-12+bn)+36
                for repeat in range(0,3):
                    if curNote < 29:
                        curNote += 12
                        print("upper " + str(curNote))
                    if curNote > 54:
                        curNote -= 12
                        print("under " + str(curNote))

                noteTime = absolute_time
                notes.append(Note(noteTime,curNote,127))

#  noteを時間ソートする
notes = sorted(notes, key=attrgetter('atime'))

# 重複ノートをずらす
for note in notes:
    noteTime = note.atime
    dupNotes = [x for x in notes if x.atime == noteTime] #  同タイムのnoteリスト

    tmpFlam = 0
    for dupNote in dupNotes:
        dupNote.atime -= tmpFlam #  前へずらす
        tmpFlam += flam

#  noteを時間ソートする
notes = sorted(notes, key=attrgetter('atime'))

# noteoffを追加する
for note in notes:
    if note.vel > 0:
        noteTime = note.atime
        curNote = note.noteNo

        notes.append(Note(noteTime+duration,curNote,0))

#  noteを時間ソートする
notes = sorted(notes, key=attrgetter('atime'))

#
for note in notes:
    absolute_time = note.atime
    curNote = note.noteNo
    vel = note.vel

    delay = int(absolute_time-prevTime)
    #print(str(curNote))
    
    #Delay
    if delay > 0:
        outText += "delay({}*bl);\n".format(delay) 
    
    if vel > 0:
        #NoteOn
        outText += "Serial.println({}+bn);\n".format(curNote)

        outText += "digitalWrite({}+bn, HIGH);\n".format(curNote)

    if vel == 0:
        #NoteOff    
        outText += "digitalWrite({}+bn, LOW);\n".format(curNote)
    
    #前回の発音時間
    prevTime = absolute_time


#ファイルに解析内容を保存
sample_file = open("{}.txt".format(os.path.splitext(os.path.basename(MIDI_FILE))[0]), mode="w")
try:
    sample_file.write(outText)
finally:
    sample_file.close()