markov_chain.py

import os
from mido import MidiFile
#number of notes to be used for prediction
window = 3

#num of notes to generate
#TODO: change this to accept values according to user
num_notes = 100

#midi ticks per quarter note, indicates tempo of track
quarter_note_ticks = 480

#accepted note durations: ranges from 16th note to whole dotted notes
accepeted_lengths = [0.25,0.375,0.5,0.75,1,1.5,2.0,3.0,4.0]
#Finds all absolute paths in directory
#https://stackoverflow.com/questions/9816816/get-absolute-paths-of-all-files-in-a-directory
def abs_paths(dir):
    for dir_path,_,filenames in os.walk(dir):
        for f in filenames:
            yield os.path.abspath(os.path.join(dir_path, f))
def pitch_to_int():
    #TODO: look at this later
    pass
if not os.path.exists('tracks'):
    # os.mkdir('tracks')
    i = 0
    #Parse midi files into tracks folder
    for path in abs_paths('data'):
        print(path)
        mid = MidiFile(path)
        for i, track in enumerate(mid.tracks):
            print('Track {}: {}'.format(i, track.name))
            for message in track:
                print(message)
        break