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# -*- coding: utf-8 -*-
from rational import *
import lilylib as ly
import musicexp
_ = ly._
def rational_to_lily_duration(rational_len):
d = musicexp.Duration()
rational_len.normalize_self()
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 = Rational(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
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