Show SMF's absolute tick and note event like LilyPond event-listener.ly.

show_smf_abs_tick.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Show SMF's absolute tick and note event like LilyPond event-listener.ly.

https://gist.github.com/trueroad/04aeccd92122c6428a9442dd55dffc61

Copyright (C) 2024 Masamichi Hosoda.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
"""

import sys

# https://gist.github.com/trueroad/52b7c4c98eec5fdf0ff3f62d64ec17bd
import smf_parse


def main() -> None:
    """Do main."""
    if len(sys.argv) != 2:
        print('Usage: ./show_abs_tick.py [INPUT.mid]')
        sys.exit(1)

    sn: smf_parse.smf_notes = smf_parse.smf_notes()
    if not sn.load(sys.argv[1]):
        print('Error')
        sys.exit(1)

    tpqn: int
    _, tpqn, _ = sn.get_smf_specs()

    i: int
    note: smf_parse.note_container
    for i, note in enumerate(sn.get_notes()):
        # Show index and ABS tick etc.
        print(f'{i}: ABS tick {note.note_on.abs_tick}, '
              f'MBT {note.note_on.mbt}, '
              f'{smf_parse.note_to_ipn(note.note_on.note_event.note)}')

        # Show note event like LilyPond event-listener.ly
        lilypond_time: float = note.note_on.abs_tick / (tpqn * 4)
        print(f'  {lilypond_time:.8f}\tnote\t{note.note_on.note_event.note}')


if __name__ == '__main__':
    main()