# -*- coding: utf-8 -*- # # This file is part of LilyPond, the GNU music typesetter. # # Copyright (C) 2016--2020 John Gourlay # # LilyPond is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # LilyPond is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LilyPond. If not, see . from fractions import Fraction import lilylib as ly import musicexp def rational_to_lily_duration(rational_len): d = musicexp.Duration() d_log = {1: 0, 2: 1, 4: 2, 8: 3, 16: 4, 32: 5, 64: 6, 128: 7, 256: 8, 512: 9}.get(rational_len.denominator, -1) # Duration of the form 1/2^n or 3/2^n can be converted to a simple lilypond duration dots = {1: 0, 3: 1, 7: 2, 15: 3, 31: 4, 63: 5, 127: 6}.get(rational_len.numerator, -1) if d_log >= dots >= 0: # account for the dots! d.duration_log = d_log - dots d.dots = dots elif d_log >= 0: d.duration_log = d_log d.factor = Fraction(rational_len.numerator) else: ly.warning(_("Encountered rational duration with denominator %s, " "unable to convert to lilypond duration") % rational_len.denominator) # TODO: Test the above error message return None return d def musicxml_step_to_lily(step): if step: return (ord(step) - ord('A') + 7 - 2) % 7 else: return None class Marker(musicexp.Music): def __init__(self): self.direction = 0 self.event = None def print_ly(self, printer): ly.warning(_("Encountered unprocessed marker %s\n") % self) pass def ly_expression(self): return "" class RepeatMarker(Marker): def __init__(self): Marker.__init__(self) self.times = 0 class EndingMarker(Marker): pass