3 # midi2ly.py -- LilyPond midi import script
5 # This file is part of LilyPond, the GNU music typesetter.
7 # Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
8 # Jan Nieuwenhuizen <janneke@gnu.org>
10 # LilyPond is free software: you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation, either version 3 of the License, or
13 # (at your option) any later version.
15 # LilyPond is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
38 ################################################################
43 scale_steps = [0, 2, 4, 5, 7, 9, 11]
51 start_quant_clocks = 0
53 duration_quant_clocks = 0
54 allowed_tuplet_clocks = []
57 ################################################################
60 program_name = sys.argv[0]
61 program_version = '@TOPLEVEL_VERSION@'
63 authors = ('Jan Nieuwenhuizen <janneke@gnu.org>',
64 'Han-Wen Nienhuys <hanwen@xs4all.nl>')
66 errorport = sys.stderr
69 sys.stdout.write ('%s (GNU LilyPond) %s\n' % (program_name, program_version))
73 ly.encoded_write (sys.stdout, '''
80 ''' % ( _ ('Copyright (c) %s by') % '1998--2015',
82 _ ('Distributed under terms of the GNU General Public License.'),
83 _ ('It comes with NO WARRANTY.')))
86 ly.encoded_write (errorport, s + '\n')
89 progress (_ ("warning: ") + s)
92 progress (_ ("error: ") + s)
93 raise Exception (_ ("Exiting... "))
96 if global_options.debug:
97 progress ("debug: " + s)
99 def system (cmd, ignore_error = 0):
100 return ly.system (cmd, ignore_error=ignore_error)
102 def strip_extension (f, ext):
103 (p, e) = os.path.splitext (f)
110 allowed_durs = (1, 2, 4, 8, 16, 32, 64, 128)
111 def __init__ (self, clocks):
113 (self.dur, self.num, self.den) = self.dur_num_den (clocks)
115 def dur_num_den (self, clocks):
116 for i in range (len (allowed_tuplet_clocks)):
117 if clocks == allowed_tuplet_clocks[i]:
118 return global_options.allowed_tuplets[i]
120 dur = 0; num = 1; den = 1;
121 g = gcd (clocks, clocks_per_1)
123 (dur, num) = (clocks_per_1 / g, clocks / g)
124 if not dur in self.allowed_durs:
125 dur = 4; num = clocks; den = clocks_per_4
126 return (dur, num, den)
132 elif self.num == 3 and self.dur != 1:
133 s = '%d.' % (self.dur / 2)
135 s = '%d*%d' % (self.dur, self.num)
137 s = '%d*%d/%d' % (self.dur, self.num, self.den)
139 global reference_note
140 reference_note.duration = self
144 def compare (self, other):
145 return self.clocks - other.clocks
154 names = (0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6)
155 alterations = (0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0)
156 alteration_names = ('eses', 'es', '', 'is' , 'isis')
157 def __init__ (self, clocks, pitch, velocity):
159 self.velocity = velocity
162 self.duration = Duration (clocks)
163 (self.octave, self.notename, self.alteration) = self.o_n_a ()
167 # minor scale: la-la (= + 5) '''
169 n = self.names[(self.pitch) % 12]
170 a = self.alterations[(self.pitch) % 12]
172 key = global_options.key
177 a = - self.alterations[(self.pitch) % 12]
180 # By tradition, all scales now consist of a sequence
181 # of 7 notes each with a distinct name, from amongst
182 # a b c d e f g. But, minor scales have a wide
183 # second interval at the top - the 'leading note' is
184 # sharped. (Why? it just works that way! Anything
185 # else doesn't sound as good and isn't as flexible at
186 # saying things. In medieval times, scales only had 6
187 # notes to avoid this problem - the hexachords.)
189 # So, the d minor scale is d e f g a b-flat c-sharp d
190 # - using d-flat for the leading note would skip the
191 # name c and duplicate the name d. Why isn't c-sharp
192 # put in the key signature? Tradition. (It's also
193 # supposedly based on the Pythagorean theory of the
194 # cycle of fifths, but that really only applies to
195 # major scales...) Anyway, g minor is g a b-flat c d
196 # e-flat f-sharp g, and all the other flat minor keys
197 # end up with a natural leading note. And there you
200 # John Sankey <bf250@freenet.carleton.ca>
202 # Let's also do a-minor: a b c d e f gis a
206 o = self.pitch / 12 - 4
210 if (key.sharps == 0 and key.flats == 0
211 and n == 5 and a == -1):
214 elif key.flats == 1 and n == 1 and a == -1:
217 elif key.flats == 2 and n == 4 and a == -1:
220 elif key.sharps == 5 and n == 4 and a == 0:
223 elif key.sharps == 6 and n == 1 and a == 0:
226 elif key.sharps == 7 and n == 5 and a == 0:
230 if key.flats >= 6 and n == 6 and a == 0:
231 n = 0; a = -1; o = o + 1
233 if key.flats >= 7 and n == 2 and a == 0:
237 if key.sharps >= 3 and n == 3 and a == 0:
240 if key.sharps >= 4 and n == 0 and a == 0:
241 n = 6; a = 1; o = o - 1
246 s = chr ((self.notename + 2) % 7 + ord ('a'))
247 return 'Note(%s %s)' % (s, self.duration.dump ())
249 def dump (self, dump_dur=True):
250 global reference_note
251 s = chr ((self.notename + 2) % 7 + ord ('a'))
252 s = s + self.alteration_names[self.alteration + 2]
253 if global_options.absolute_pitches:
256 delta = self.pitch - reference_note.pitch
257 commas = sign (delta) * (abs (delta) / 12)
259 * (self.notename - reference_note.notename) + 7)
261 or ((self.notename == reference_note.notename)
262 and (abs (delta) > 4) and (abs (delta) < 12))):
263 commas = commas + sign (delta)
268 s = s + "," * -commas
271 and (self.duration.compare (reference_note.duration)
272 or global_options.explicit_durations)):
273 s = s + self.duration.dump ()
275 # Chords need to handle their reference duration themselves
277 reference_note = self
284 def __init__ (self, num, den):
289 def bar_clocks (self):
290 return clocks_per_1 * self.num / self.den
293 return 'Time(%d/%d)' % (self.num, self.den)
298 return '\n ' + '\\time %d/%d ' % (self.num, self.den) + '\n '
301 def __init__ (self, seconds_per_1):
303 self.seconds_per_1 = seconds_per_1
306 return 'Tempo(%d)' % self.bpm ()
309 return 4 * 60 / self.seconds_per_1
312 return '\n ' + '\\tempo 4 = %d ' % (self.bpm ()) + '\n '
315 clefs = ('"bass_8"', 'bass', 'violin', '"violin^8"')
316 def __init__ (self, type):
320 return 'Clef(%s)' % self.clefs[self.type]
323 return '\n \\clef %s\n ' % self.clefs[self.type]
326 key_sharps = ('c', 'g', 'd', 'a', 'e', 'b', 'fis')
327 key_flats = ('BUG', 'f', 'bes', 'es', 'as', 'des', 'ges')
329 def __init__ (self, sharps, flats, minor):
336 global_options.key = self
339 if self.sharps and self.flats:
343 k = (ord ('cfbeadg'[self.flats % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
345 k = (ord ('cgdaebf'[self.sharps % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
348 name = chr ((k + 2) % 7 + ord ('a'))
350 name = chr ((k + 2) % 7 + ord ('a'))
352 # fis cis gis dis ais eis bis
353 sharps = (2, 4, 6, 1, 3, 5, 7)
354 # bes es as des ges ces fes
355 flats = (6, 4, 2, 7, 5, 3, 1)
358 if flats[k] <= self.flats:
361 if sharps[k] <= self.sharps:
365 name = name + Note.alteration_names[a + 2]
373 return '\n\n ' + s + '\n '
381 'SEQUENCE_TRACK_NAME',
389 def __init__ (self, type, text):
395 # urg, we should be sure that we're in a lyrics staff
397 if self.type == midi.LYRIC:
398 s = '"%s"' % self.text
399 d = Duration (self.clocks)
400 if (global_options.explicit_durations
401 or d.compare (reference_note.duration)):
402 s = s + Duration (self.clocks).dump ()
404 elif (self.text.strip ()
405 and self.type == midi.SEQUENCE_TRACK_NAME
406 and not self.text == 'control track'
407 and not self.track.lyrics_p_):
408 text = self.text.replace ('(MIDI)', '').strip ()
410 s = '\n \\set Staff.instrumentName = "%(text)s"\n ' % locals ()
411 elif self.text.strip ():
412 s = '\n % [' + self.text_types[self.type] + '] ' + self.text + '\n '
416 return 'Text(%d=%s)' % (self.type, self.text)
418 def get_voice (channel, music):
419 debug ('channel: ' + str (channel) + '\n')
420 return unthread_notes (music)
423 def __init__ (self, number):
427 def add (self, event):
428 self.events.append (event)
429 def get_voice (self):
431 self.music = self.parse ()
432 return get_voice (self.number, self.music)
439 for e in self.events:
442 if start_quant_clocks:
443 t = quantise_clocks (t, start_quant_clocks)
445 if (e[1][0] == midi.NOTE_OFF
446 or (e[1][0] == midi.NOTE_ON and e[1][2] == 0)):
447 debug ('%d: NOTE OFF: %s' % (t, e[1][1]))
449 debug (' ...treated as OFF')
450 end_note (pitches, notes, t, e[1][1])
452 elif e[1][0] == midi.NOTE_ON:
453 if not pitches.has_key (e[1][1]):
454 debug ('%d: NOTE ON: %s' % (t, e[1][1]))
455 pitches[e[1][1]] = (t, e[1][2])
459 # all include ALL_NOTES_OFF
460 elif (e[1][0] >= midi.ALL_SOUND_OFF
461 and e[1][0] <= midi.POLY_MODE_ON):
463 end_note (pitches, notes, t, i)
465 elif e[1][0] == midi.META_EVENT:
466 if e[1][1] == midi.END_OF_TRACK:
468 end_note (pitches, notes, t, i)
471 elif e[1][1] == midi.SET_TEMPO:
472 (u0, u1, u2) = map (ord, e[1][2])
473 us_per_4 = u2 + 256 * (u1 + 256 * u0)
474 seconds_per_1 = us_per_4 * 4 / 1e6
475 music.append ((t, Tempo (seconds_per_1)))
476 elif e[1][1] == midi.TIME_SIGNATURE:
477 (num, dur, clocks4, count32) = map (ord, e[1][2])
479 music.append ((t, Time (num, den)))
480 elif e[1][1] == midi.KEY_SIGNATURE:
481 (alterations, minor) = map (ord, e[1][2])
484 if alterations < 127:
487 flats = 256 - alterations
489 k = Key (sharps, flats, minor)
490 if not t and global_options.key:
491 # At t == 0, a set --key overrides us
492 k = global_options.key
493 music.append ((t, k))
495 # ugh, must set key while parsing
496 # because Note init uses key
497 # Better do Note.calc () at dump time?
498 global_options.key = k
500 elif (e[1][1] == midi.LYRIC
501 or (global_options.text_lyrics
502 and e[1][1] == midi.TEXT_EVENT)):
503 self.lyrics_p_ = True
505 last_lyric.clocks = t - last_time
506 music.append ((last_time, last_lyric))
508 last_lyric = Text (midi.LYRIC, e[1][2])
510 elif (e[1][1] >= midi.SEQUENCE_NUMBER
511 and e[1][1] <= midi.CUE_POINT):
512 text = Text (e[1][1], e[1][2])
514 music.append ((t, text))
515 if (text.type == midi.SEQUENCE_TRACK_NAME):
516 self.name = text.text
518 if global_options.verbose:
519 sys.stderr.write ("SKIP: %s\n" % `e`)
521 if global_options.verbose:
522 sys.stderr.write ("SKIP: %s\n" % `e`)
525 # last_lyric.clocks = t - last_time
527 last_lyric.clocks = clocks_per_4
528 music.append ((last_time, last_lyric))
533 if i < len (music) and notes[0][0] >= music[i][0]:
536 music.insert (i, notes[0])
540 class Track (Channel):
542 Channel.__init__ (self, None)
545 self.lyrics_p_ = False
546 def _add (self, event):
547 self.events.append (event)
548 def add (self, event, channel=None):
552 self.channels[channel] = self.channels.get (channel, Channel (channel))
553 self.channels[channel].add (event)
554 def get_voices (self):
555 return ([self.get_voice ()]
556 + [self.channels[k].get_voice ()
557 for k in sorted (self.channels.keys ())])
559 def create_track (events):
563 if data[0] > 0x7f and data[0] < 0xf0:
564 channel = data[0] & 0x0f
565 e = (e[0], tuple ([data[0] & 0xf0] + data[1:]))
566 track.add (e, channel)
571 def quantise_clocks (clocks, quant):
572 q = int (clocks / quant) * quant
574 for tquant in allowed_tuplet_clocks:
575 if int (clocks / tquant) * tquant == clocks:
577 if 2 * (clocks - q) > quant:
581 def end_note (pitches, notes, t, e):
583 (lt, vel) = pitches[e]
593 if duration_quant_clocks:
594 d = quantise_clocks (d, duration_quant_clocks)
596 d = duration_quant_clocks
599 (lt, Note (d, e, vel)))
604 def unthread_notes (channel):
613 if (e[1].__class__ == Note
614 and ((t == start_busy_t
615 and e[1].clocks + t == end_busy_t)
616 or t >= end_busy_t)):
619 end_busy_t = t + e[1].clocks
620 elif (e[1].__class__ == Time
621 or e[1].__class__ == Key
622 or e[1].__class__ == Text
623 or e[1].__class__ == Tempo):
627 threads.append (thread)
642 def dump_skip (skip, clocks):
643 return skip + Duration (clocks).dump () + ' '
652 if i.__class__ == Note:
657 s = s + dump (notes[0])
658 elif len (notes) > 1:
659 global reference_note
660 reference_dur = reference_note.duration
662 s = s + notes[0].dump (dump_dur=False)
665 s = s + i.dump (dump_dur=False)
667 if (r.duration.compare (reference_dur)
668 or global_options.explicit_durations):
669 s = s + r.duration.dump ()
674 def dump_bar_line (last_bar_t, t, bar_count):
676 bar_t = time.bar_clocks ()
677 if t - last_bar_t >= bar_t:
678 bar_count = bar_count + (t - last_bar_t) / bar_t
680 if t - last_bar_t == bar_t:
681 s = '\n | %% %(bar_count)d\n ' % locals ()
684 # urg, this will barf at meter changes
685 last_bar_t = last_bar_t + (t - last_bar_t) / bar_t * bar_t
687 return (s, last_bar_t, bar_count)
690 def dump_voice (thread, skip):
691 global reference_note, time
692 ref = Note (0, 4*12, 0)
693 if not reference_note:
696 ref.duration = reference_note.duration
703 if last_e and last_e[0] == e[0]:
707 chs.append ((last_e[0], ch))
714 chs.append ((last_e[0], ch))
724 i = lines[-1].rfind ('\n') + 1
725 if len (lines[-1][i:]) > LINE_BELL:
730 if bar_max and t > time.bar_clocks () * bar_max:
731 d = time.bar_clocks () * bar_max - last_t
732 lines[-1] = lines[-1] + dump_skip (skip, d)
734 errorport.write ('BUG: time skew')
736 (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
739 if bar_max and bar_count > bar_max:
742 lines[-1] = lines[-1] + s
743 lines[-1] = lines[-1] + dump_chord (ch[1])
747 if i.clocks > clocks:
752 (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
754 lines[-1] = lines[-1] + s
756 return '\n '.join (lines) + '\n'
758 def number2ascii (i):
763 s = '%c' % (m + ord ('A')) + s
767 def get_track_name (i):
768 return 'track' + number2ascii (i)
770 def get_channel_name (i):
771 return 'channel' + number2ascii (i)
773 def get_voice_name (i, zero_too_p=False):
775 return 'voice' + number2ascii (i)
778 def lst_append (lst, x):
782 def get_voice_layout (average_pitch):
784 for i in range (len (average_pitch)):
785 d[average_pitch[i]] = lst_append (d.get (average_pitch[i], []), i)
786 s = list (reversed (sorted (average_pitch)))
787 non_empty = len (filter (lambda x: x, s))
788 names = ['One', 'Two']
790 names = ['One', 'Three', 'Four', 'Two']
791 layout = map (lambda x: '', range (len (average_pitch)))
792 for i, n in zip (s, names):
801 def dump_track (track, n):
803 track_name = get_track_name (n)
805 average_pitch = track_average_pitch (track)
806 voices = len (filter (lambda x: x, average_pitch[1:]))
807 clef = get_best_clef (average_pitch[0])
811 for channel in track:
813 channel_name = get_channel_name (c)
815 for voice in channel:
816 voice_name = get_voice_name (v)
817 voice_id = track_name + channel_name + voice_name
818 item = voice_first_item (voice)
820 if item and item.__class__ == Note:
822 if global_options.skip:
824 s += '%(voice_id)s = ' % locals ()
825 if not global_options.absolute_pitches:
827 elif item and item.__class__ == Text:
829 s += '%(voice_id)s = \\lyricmode ' % locals ()
832 s += '%(voice_id)s = ' % locals ()
834 if not n and not vv and global_options.key:
835 s += global_options.key.dump ()
836 if average_pitch[vv+1] and voices > 1:
837 vl = get_voice_layout (average_pitch[1:])[vv]
839 s += ' \\voice' + vl + '\n'
841 if not global_options.quiet:
842 warning (_ ('found more than 5 voices on a staff, expect bad output'))
843 s += ' ' + dump_voice (voice, skip)
848 s += '%(track_name)s = <<\n' % locals ()
851 s += clef.dump () + '\n'
855 for channel in track:
857 channel_name = get_channel_name (c)
859 for voice in channel:
860 voice_context_name = get_voice_name (vv, zero_too_p=True)
861 voice_name = get_voice_name (v)
864 voice_id = track_name + channel_name + voice_name
865 item = voice_first_item (voice)
867 if item and item.__class__ == Text:
869 s += ' \\context %(context)s = %(voice_context_name)s \\%(voice_id)s\n' % locals ()
873 def voice_first_item (voice):
875 if (event[1].__class__ == Note
876 or (event[1].__class__ == Text
877 and event[1].type == midi.LYRIC)):
881 def channel_first_item (channel):
882 for voice in channel:
883 first = voice_first_item (voice)
888 def track_first_item (track):
889 for channel in track:
890 first = channel_first_item (channel)
895 def track_average_pitch (track):
899 for channel in track:
900 for voice in channel:
904 if event[1].__class__ == Note:
907 p[v] += event[1].pitch
916 def get_best_clef (average_pitch):
918 if average_pitch <= 3*12:
920 elif average_pitch <= 5*12:
922 elif average_pitch >= 7*12:
927 def __init__ (self, track):
928 self.voices = track.get_voices ()
930 return dump_track (self.voices, i)
932 def convert_midi (in_file, out_file):
936 global clocks_per_1, clocks_per_4, key
937 global start_quant_clocks
938 global duration_quant_clocks
939 global allowed_tuplet_clocks
942 str = open (in_file, 'rb').read ()
943 clocks_max = bar_max * clocks_per_1 * 2
944 midi_dump = midi.parse (str, clocks_max)
946 clocks_per_1 = midi_dump[0][1]
947 clocks_per_4 = clocks_per_1 / 4
950 if global_options.start_quant:
951 start_quant_clocks = clocks_per_1 / global_options.start_quant
953 if global_options.duration_quant:
954 duration_quant_clocks = clocks_per_1 / global_options.duration_quant
956 allowed_tuplet_clocks = []
957 for (dur, num, den) in global_options.allowed_tuplets:
958 allowed_tuplet_clocks.append (clocks_per_1 / dur * num / den)
960 if global_options.verbose:
961 print 'allowed tuplet clocks:', allowed_tuplet_clocks
963 tracks = [create_track (t) for t in midi_dump[1]]
964 # urg, parse all global track events, such as Key first
965 # this fixes key in different voice/staff problem
971 voices = t.get_voices ()
972 if ((t.name and prev and prev.name)
973 and t.name.split (':')[0] == prev.name.split (':')[0]):
974 # staves[-1].voices += voices
975 # all global track events first
976 staves[-1].voices = ([staves[-1].voices[0]]
978 + staves[-1].voices[1:]
981 staves.append (Staff (t))
984 tag = '%% Lily was here -- automatically converted by %s from %s' % ( program_name, in_file)
996 \remove "Note_heads_engraver"
997 \consists "Completion_heads_engraver"
998 \remove "Rest_engraver"
999 \consists "Completion_rest_engraver"
1004 for i in global_options.include_header:
1005 s += '\n%% included from %(i)s\n' % locals ()
1006 s += open (i).read ()
1011 for i, t in enumerate (staves):
1014 s += '\n\\score {\n <<\n'
1016 control_track = False
1018 for i, staff in enumerate (staves):
1019 track_name = get_track_name (i)
1020 item = track_first_item (staff.voices)
1021 staff_name = track_name
1023 if not i and not item and len (staves) > 1:
1024 control_track = track_name
1026 elif (item and item.__class__ == Note):
1029 s += ' \\context %(context)s=%(staff_name)s \\%(control_track)s\n' % locals ()
1030 elif item and item.__class__ == Text:
1033 s += ' \\context %(context)s=%(staff_name)s \\%(track_name)s\n' % locals ()
1041 if not global_options.quiet:
1042 progress (_ ("%s output to `%s'...") % ('LY', out_file))
1047 handle = open (out_file, 'w')
1053 def get_option_parser ():
1054 p = ly.get_option_parser (usage=_ ("%s [OPTION]... FILE") % 'midi2ly',
1055 description=_ ("Convert %s to LilyPond input.\n") % 'MIDI',
1056 add_help_option=False)
1058 p.add_option ('-a', '--absolute-pitches',
1059 action='store_true',
1060 help=_ ('print absolute pitches'))
1061 p.add_option ('-d', '--duration-quant',
1063 help=_ ('quantise note durations on DUR'))
1064 p.add_option ('-D', '--debug',
1065 action='store_true',
1066 help=_ ('debug printing'))
1067 p.add_option ('-e', '--explicit-durations',
1068 action='store_true',
1069 help=_ ('print explicit durations'))
1070 p.add_option('-h', '--help',
1072 help=_ ('show this help and exit'))
1073 p.add_option('-i', '--include-header',
1074 help=_ ('prepend FILE to output'),
1078 p.add_option('-k', '--key', help=_ ('set key: ALT=+sharps|-flats; MINOR=1'),
1079 metavar=_ ('ALT[:MINOR]'),
1081 p.add_option ('-o', '--output', help=_ ('write output to FILE'),
1084 p.add_option ('-p', '--preview', help=_ ('preview of first 4 bars'),
1085 action='store_true')
1086 p.add_option ('-q', '--quiet',
1087 action="store_true",
1088 help=_ ("suppress progress messages and warnings about excess voices"))
1089 p.add_option ('-s', '--start-quant',help= _ ('quantise note starts on DUR'),
1091 p.add_option ('-S', '--skip',
1092 action = "store_true",
1093 help =_ ("use s instead of r for rests"))
1094 p.add_option ('-t', '--allow-tuplet',
1095 metavar=_ ('DUR*NUM/DEN'),
1097 dest='allowed_tuplets',
1098 help=_ ('allow tuplet durations DUR*NUM/DEN'),
1100 p.add_option ('-V', '--verbose', help=_ ('be verbose'),
1101 action='store_true')
1102 p.version = 'midi2ly (LilyPond) @TOPLEVEL_VERSION@'
1103 p.add_option ('--version',
1105 help=_ ('show version number and exit'))
1106 p.add_option ('-w', '--warranty', help=_ ('show warranty and copyright'),
1107 action='store_true',)
1108 p.add_option ('-x', '--text-lyrics', help=_ ('treat every text as a lyric'),
1109 action='store_true')
1111 p.add_option_group (ly.display_encode (_ ('Examples')),
1113 $ midi2ly --key=-2:1 --duration-quant=32 --allow-tuplet=4*2/3 --allow-tuplet=2*4/3 foo.midi
1115 p.add_option_group ('',
1117 _ ('Report bugs via %s')
1118 % 'http://post.gmane.org/post.php'
1119 '?group=gmane.comp.gnu.lilypond.bugs') + '\n')
1125 opt_parser = get_option_parser ()
1126 (options, args) = opt_parser.parse_args ()
1128 if options.warranty:
1132 if not args or args[0] == '-':
1133 opt_parser.print_help ()
1134 ly.stderr_write ('\n%s: %s %s\n' % (program_name, _ ('error: '),
1135 _ ('no files specified on command line.')))
1138 if options.duration_quant:
1139 options.duration_quant = int (options.duration_quant)
1142 (alterations, minor) = map (int, (options.key + ':0').split (':'))[0:2]
1145 if alterations >= 0:
1146 sharps = alterations
1148 flats = - alterations
1149 options.key = Key (sharps, flats, minor)
1151 if options.start_quant:
1152 options.start_quant = int (options.start_quant)
1158 options.allowed_tuplets = [map (int, a.replace ('/','*').split ('*'))
1159 for a in options.allowed_tuplets]
1162 sys.stderr.write ('Allowed tuplets: %s\n' % `options.allowed_tuplets`)
1164 global global_options
1165 global_options = options
1170 files = do_options ()
1172 exts = ['.midi', '.mid', '.MID']
1176 g = strip_extension (g, e)
1177 if not os.path.exists (f):
1180 if os.path.exists (n):
1184 if not global_options.output:
1186 outbase = os.path.basename (g)
1187 o = outbase + '-midi.ly'
1188 elif (global_options.output[-1] == os.sep
1189 or os.path.isdir (global_options.output)):
1190 outdir = global_options.output
1191 outbase = os.path.basename (g)
1192 o = os.path.join (outdir, outbase + '-midi.ly')
1194 o = global_options.output
1195 (outdir, outbase) = os.path.split (o)
1197 if outdir and outdir != '.' and not os.path.exists (outdir):
1198 os.mkdir (outdir, 0777)
1202 if __name__ == '__main__':