8 from gettext import gettext as _
19 from rational import Rational
23 sys.stderr.write (str + '\n')
27 def musicxml_duration_to_lily (mxl_note):
28 d = musicexp.Duration ()
29 if mxl_note.get_maybe_exist_typed_child (musicxml.Type):
30 d.duration_log = mxl_note.get_duration_log ()
34 d.dots = len (mxl_note.get_typed_children (musicxml.Dot))
35 d.factor = mxl_note._duration / d.get_length ()
39 def group_tuplets (music_list, events):
42 """Collect Musics from
43 MUSIC_LIST demarcated by EVENTS_LIST in TimeScaledMusic objects.
50 for (ev_chord, tuplet_elt, fraction) in events:
51 while (j < len (music_list)):
52 if music_list[j]== ev_chord:
55 if tuplet_elt.type == 'start':
56 indices.append ((j, None, fraction))
57 elif tuplet_elt.type == 'stop':
58 indices[-1] = (indices[-1][0], j, indices[-1][2])
62 for (i1, i2, frac) in indices:
66 new_list.extend (music_list[last:i1])
67 seq = musicexp.SequentialMusic ()
69 seq.elements = music_list[i1:last]
71 tsm = musicexp.TimeScaledMusic ()
74 tsm.numerator = frac[0]
75 tsm.denominator = frac[1]
79 new_list.extend (music_list[last:])
83 def musicxml_clef_to_lily (attributes):
84 change = musicexp.ClefChange ()
85 change.type = attributes.get_clef_sign ()
88 def musicxml_time_to_lily (attributes):
89 (beats, type) = attributes.get_time_signature ()
91 change = musicexp.TimeSignatureChange()
92 change.fraction = (beats, type)
96 def musicxml_key_to_lily (attributes):
97 start_pitch = musicexp.Pitch ()
98 (fifths, mode) = attributes.get_key_signature ()
105 start_pitch.alteration = a
107 print 'unknown mode', mode
109 fifth = musicexp.Pitch()
116 for x in range (fifths):
117 start_pitch = start_pitch.transposed (fifth)
119 start_pitch.octave = 0
121 change = musicexp.KeySignatureChange()
123 change.tonic = start_pitch
126 def musicxml_attributes_to_lily (attrs):
129 'clef': musicxml_clef_to_lily,
130 'time': musicxml_time_to_lily,
131 'key': musicxml_key_to_lily
133 for (k, func) in attr_dispatch.items ():
134 childs = attrs.get_named_children (k)
136 ## ugh: you get clefs spread over staves for piano
138 elts.append (func (attrs))
142 spanner_event_dict = {
143 'slur' : musicexp.SlurEvent,
144 'beam' : musicexp.BeamEvent,
146 spanner_type_dict = {
153 def musicxml_spanner_to_lily_event (mxl_event):
156 name = mxl_event.get_name()
158 func = spanner_event_dict[name]
161 print 'unknown span event ', mxl_event
164 key = mxl_event.get_type ()
165 ev.span_direction = spanner_type_dict[key]
167 print 'unknown span type', key, 'for', name
171 instrument_drumtype_dict = {
172 'Acoustic Snare Drum': 'acousticsnare',
173 'Side Stick': 'sidestick',
174 'Open Triangle': 'opentriangle',
175 'Mute Triangle': 'mutetriangle',
176 'Tambourine': 'tambourine',
180 def musicxml_note_to_lily_main_event (n):
184 mxl_pitch = n.get_maybe_exist_typed_child (musicxml.Pitch)
187 pitch = musicxml_pitch_to_lily (mxl_pitch)
188 event = musicexp.NoteEvent()
191 acc = n.get_maybe_exist_named_child ('accidental')
193 # let's not force accs everywhere.
194 event.cautionary = acc.editorial
196 elif n.get_maybe_exist_typed_child (musicxml.Rest):
197 event = musicexp.RestEvent()
198 elif n.instrument_name:
199 event = musicexp.NoteEvent ()
200 event.drum_type = instrument_drumtype_dict[n.instrument_name]
204 n.message ("could not find suitable event")
206 event.duration = musicxml_duration_to_lily (n)
212 def __init__ (self, here, dest):
216 class LilyPondVoiceBuilder:
219 self.end_moment = Rational (0)
220 self.begin_moment = Rational (0)
221 self.pending_multibar = Rational (0)
223 def _insert_multibar (self):
224 r = musicexp.MultiMeasureRest ()
225 r.duration = musicexp.Duration()
226 r.duration.duration_log = 0
227 r.duration.factor = self.pending_multibar
228 self.elements.append (r)
229 self.begin_moment = self.end_moment
230 self.end_moment = self.begin_moment + self.pending_multibar
231 self.pending_multibar = Rational (0)
233 def add_multibar_rest (self, duration):
234 self.pending_multibar += duration
237 def add_music (self, music, duration):
238 assert isinstance (music, musicexp.Music)
239 if self.pending_multibar > Rational (0):
240 self._insert_multibar ()
242 self.elements.append (music)
243 self.begin_moment = self.end_moment
244 self.end_moment = self.begin_moment + duration
246 def add_bar_check (self, number):
247 b = musicexp.BarCheck ()
248 b.bar_number = number
249 self.add_music (b, Rational (0))
251 def jumpto (self, moment):
252 current_end = self.end_moment + self.pending_multibar
253 diff = moment - current_end
255 if diff < Rational (0):
256 raise NegativeSkip(current_end, moment)
258 if diff > Rational (0):
259 skip = musicexp.SkipEvent()
260 skip.duration.duration_log = 0
261 skip.duration.factor = diff
263 evc = musicexp.EventChord ()
264 evc.elements.append (skip)
265 self.add_music (evc, diff)
267 def last_event_chord (self, starting_at):
271 and isinstance (self.elements[-1], musicexp.EventChord)
272 and self.begin_moment == starting_at):
273 value = self.elements[-1]
275 self.jumpto (starting_at)
280 def correct_negative_skip (self, goto):
281 self.end_moment = goto
282 self.begin_moment = goto
283 evc = musicexp.EventChord ()
284 self.elements.append (evc)
286 def musicxml_voice_to_lily_voice (voice):
290 voice_builder = LilyPondVoiceBuilder()
292 for n in voice._elements:
293 if n.get_name () == 'forward':
296 if not n.get_maybe_exist_named_child ('chord'):
298 voice_builder.jumpto (n._when)
299 except NegativeSkip, neg:
300 voice_builder.correct_negative_skip (n._when)
301 n.message ("Negative skip? from %s to %s, diff %s" % (neg.here, neg.dest, neg.dest - neg.here))
303 if isinstance (n, musicxml.Attributes):
304 if n.is_first () and n._measure_position == Rational (0):
306 number = int (n.get_parent ().number)
310 voice_builder.add_bar_check (number)
311 for a in musicxml_attributes_to_lily (n):
312 voice_builder.add_music (a, Rational (0))
315 if not n.__class__.__name__ == 'Note':
316 print 'not a Note or Attributes?', n
319 rest = n.get_maybe_exist_typed_child (musicxml.Rest)
321 and rest.is_whole_measure ()):
323 voice_builder.add_multibar_rest (n._duration)
326 if n.is_first () and n._measure_position == Rational (0):
328 num = int (n.get_parent ().number)
331 voice_builder.add_bar_check (num)
333 main_event = musicxml_note_to_lily_main_event (n)
336 if main_event.drum_type:
337 modes_found['drummode'] = True
338 except AttributeError:
342 ev_chord = voice_builder.last_event_chord (n._when)
344 ev_chord = musicexp.EventChord()
345 voice_builder.add_music (ev_chord, n._duration)
347 ev_chord.append (main_event)
349 notations = n.get_maybe_exist_typed_child (musicxml.Notations)
353 if notations.get_tuplet():
354 tuplet_event = notations.get_tuplet()
355 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
358 frac = mod.get_fraction ()
360 tuplet_events.append ((ev_chord, tuplet_event, frac))
362 slurs = [s for s in notations.get_named_children ('slur')
363 if s.get_type () in ('start','stop')]
366 print 'more than 1 slur?'
368 lily_ev = musicxml_spanner_to_lily_event (slurs[0])
369 ev_chord.append (lily_ev)
371 mxl_tie = notations.get_tie ()
372 if mxl_tie and mxl_tie.type == 'start':
373 ev_chord.append (musicexp.TieEvent ())
375 mxl_beams = [b for b in n.get_named_children ('beam')
376 if (b.get_type () in ('begin', 'end')
377 and b.is_primary ())]
379 beam_ev = musicxml_spanner_to_lily_event (mxl_beams[0])
381 ev_chord.append (beam_ev)
384 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
387 frac = mod.get_fraction ()
389 tuplet_events.append ((ev_chord, tuplet_event, frac))
391 ## force trailing mm rests to be written out.
392 voice_builder.add_music (musicexp.EventChord (), Rational (0))
394 ly_voice = group_tuplets (voice_builder.elements, tuplet_events)
396 seq_music = musicexp.SequentialMusic()
398 if 'drummode' in modes_found.keys ():
399 ## \key <pitch> barfs in drummode.
400 ly_voice = [e for e in ly_voice
401 if not isinstance(e, musicexp.KeySignatureChange)]
403 seq_music.elements = ly_voice
407 if len (modes_found) > 1:
408 print 'Too many modes found', modes_found.keys ()
410 return_value = seq_music
411 for mode in modes_found.keys ():
412 v = musicexp.ModeChangingMusicWrapper()
413 v.element = return_value
420 def musicxml_id_to_lily (id):
421 digits = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
425 d = digits.index (dig) + 1
426 dig = dig[0].upper() + dig[1:]
427 id = re.sub ('%d' % d, dig, id)
429 id = re.sub ('[^a-zA-Z]', 'X', id)
433 def musicxml_pitch_to_lily (mxl_pitch):
435 p.alteration = mxl_pitch.get_alteration ()
436 p.step = (ord (mxl_pitch.get_step ()) - ord ('A') + 7 - 2) % 7
437 p.octave = mxl_pitch.get_octave () - 4
440 def voices_in_part (part):
441 """Return a Name -> Voice dictionary for PART"""
443 part.extract_voices ()
444 voice_dict = part.get_voices ()
448 def voices_in_part_in_parts (parts):
449 """return a Part -> Name -> Voice dictionary"""
450 return dict([(p, voices_in_part (p)) for p in parts])
453 def get_all_voices (parts):
454 all_voices = voices_in_part_in_parts (parts)
457 for p, name_voice in all_voices.items ():
460 for n, v in name_voice.items ():
461 progress ("Converting to LilyPond expressions...")
462 part_ly_voices[n] = (musicxml_voice_to_lily_voice (v), v)
464 all_ly_voices[p] = part_ly_voices
469 def option_parser ():
470 p = ly.get_option_parser(usage='musicxml2ly FILE.xml',
471 version = """%prog (LilyPond) @TOPLEVEL_VERSION@
473 This program is free software. It is covered by the GNU General Public
474 License and you are welcome to change it and/or distribute copies of it
475 under certain conditions. Invoke as `lilypond --warranty' for more
478 Copyright (c) 2005--2007 by
479 Han-Wen Nienhuys <hanwen@xs4all.nl> and
480 Jan Nieuwenhuizen <janneke@gnu.org>
484 """Convert MusicXML file to LilyPond input.
487 p.add_option ('-v', '--verbose',
488 action = "store_true",
492 p.add_option ('', '--lxml',
496 help="Use lxml.etree; uses less memory and cpu time.")
498 p.add_option ('-o', '--output',
504 help='set output file')
506 p.add_option_group ('', description = '''Report bugs via http://post.gmane.org/post.php?group=gmane.comp.gnu.lilypond.bugs
510 def music_xml_voice_name_to_lily_name (part, name):
511 str = "Part%sVoice%s" % (part.id, name)
512 return musicxml_id_to_lily (str)
514 def print_voice_definitions (printer, voices):
515 for (part, nv_dict) in voices.items():
517 for (name, (voice, mxlvoice)) in nv_dict.items ():
518 k = music_xml_voice_name_to_lily_name (part, name)
519 printer.dump ('%s = ' % k)
520 voice.print_ly (printer)
525 return dict ([(elt,1) for elt in l]).keys ()
527 def print_score_setup (printer, part_list, voices):
528 part_dict = dict ([(p.id, p) for p in voices.keys ()])
532 for part_definition in part_list:
533 part_name = part_definition.id
535 part = part_dict[part_name]
537 print 'unknown part in part-list:', part_name
540 nv_dict = voices[part]
541 staves = reduce (lambda x,y: x+ y,
542 [mxlvoice._staves.keys ()
543 for (v, mxlvoice) in nv_dict.values ()],
547 staves = uniq_list (staves)
549 printer ('\\context PianoStaff << ')
553 staff_voices = [music_xml_voice_name_to_lily_name (part, voice_name)
554 for (voice_name, (v, mxlvoice)) in nv_dict.items ()
555 if mxlvoice._start_staff == s]
557 printer ('\\context Staff = "%s" << ' % s)
559 for v in staff_voices:
560 printer ('\\context Voice = "%s" \\%s' % (v,v))
569 printer ('\\new Staff <<')
571 for (n,v) in nv_dict.items ():
573 n = music_xml_voice_name_to_lily_name (part, n)
574 printer ('\\context Voice = "%s" \\%s' % (n,n))
581 def print_ly_preamble (printer, filename):
582 printer.dump_version ()
583 printer.print_verbatim ('%% converted from %s\n' % filename)
585 def read_musicxml (filename, use_lxml):
589 tree = lxml.etree.parse (filename)
590 mxl_tree = musicxml.lxml_demarshal_node (tree.getroot ())
593 from xml.dom import minidom, Node
595 doc = minidom.parse(filename)
596 node = doc.documentElement
597 return musicxml.minidom_demarshal_node (node)
602 def convert (filename, options):
603 progress ("Reading MusicXML from %s ..." % filename)
605 tree = read_musicxml (filename, options.use_lxml)
608 id_instrument_map = {}
609 if tree.get_maybe_exist_typed_child (musicxml.Part_list):
610 mxl_pl = tree.get_maybe_exist_typed_child (musicxml.Part_list)
611 part_list = mxl_pl.get_named_children ("score-part")
613 parts = tree.get_typed_children (musicxml.Part)
614 voices = get_all_voices (parts)
616 if not options.output_name:
617 options.output_name = os.path.basename (filename)
618 options.output_name = os.path.splitext (options.output_name)[0]
621 defs_ly_name = options.output_name + '-defs.ly'
622 driver_ly_name = options.output_name + '.ly'
624 printer = musicexp.Output_printer()
625 progress ("Output to `%s'" % defs_ly_name)
626 printer.set_file (open (defs_ly_name, 'w'))
628 print_ly_preamble (printer, filename)
629 print_voice_definitions (printer, voices)
634 progress ("Output to `%s'" % driver_ly_name)
635 printer = musicexp.Output_printer()
636 printer.set_file (open (driver_ly_name, 'w'))
637 print_ly_preamble (printer, filename)
638 printer.dump (r'\include "%s"' % defs_ly_name)
639 print_score_setup (printer, part_list, voices)
646 opt_parser = option_parser()
648 (options, args) = opt_parser.parse_args ()
650 opt_parser.print_usage()
653 voices = convert (args[0], options)
655 if __name__ == '__main__':