utils.py 文件源码

def convert_midi2mp3():
    """ Convert all midi files of the given directory to mp3
    """
    input_dir = 'docs/midi/'
    output_dir = 'docs/mp3/'

    assert os.path.exists(input_dir)
    os.makedirs(output_dir, exist_ok=True)

    print('Converting:')
    i = 0
    for filename in glob.iglob(os.path.join(input_dir, '**/*.mid'), recursive=True):
        print(filename)
        in_name = filename
        out_name = os.path.join(output_dir, os.path.splitext(os.path.basename(filename))[0] + '.mp3')
        command = 'timidity {} -Ow -o - | ffmpeg -i - -acodec libmp3lame -ab 64k {}'.format(in_name, out_name)  # TODO: Redirect stdout to avoid polluting the screen (have cleaner printing)
        subprocess.call(command, shell=True)
        i += 1
    print('{} files converted.'.format(i))