3 # midi2ly.py -- LilyPond midi import script
5 # This file is part of LilyPond, the GNU music typesetter.
7 # Copyright (C) 1998--2011 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/>.
26 * test on weird and unquantised midi input (lily-devel)
27 * update doc and manpage
29 * simply insert clef changes whenever too many ledger lines
30 [to avoid tex capacity exceeded]
31 * do not ever quant skips
32 * better lyrics handling
33 * [see if it is feasible to] move ly-classes to library for use in
34 other converters, while leaving midi specific stuff here
48 ################################################################
53 scale_steps = [0, 2, 4, 5, 7, 9, 11]
61 start_quant_clocks = 0
63 duration_quant_clocks = 0
64 allowed_tuplet_clocks = []
67 ################################################################
70 program_name = sys.argv[0]
71 program_version = '@TOPLEVEL_VERSION@'
73 authors = ('Jan Nieuwenhuizen <janneke@gnu.org>',
74 'Han-Wen Nienhuys <hanwen@xs4all.nl>')
76 errorport = sys.stderr
79 sys.stdout.write ('%s (GNU LilyPond) %s\n' % (program_name, program_version))
83 ly.encoded_write (sys.stdout, '''
90 ''' % ( _ ('Copyright (c) %s by') % '1998--2011',
92 _ ('Distributed under terms of the GNU General Public License.'),
93 _ ('It comes with NO WARRANTY.')))
96 ly.encoded_write (errorport, s + '\n')
99 progress (_ ("warning: ") + s)
102 progress (_ ("error: ") + s)
103 raise Exception (_ ("Exiting... "))
106 if global_options.debug:
107 progress ("debug: " + s)
109 def system (cmd, ignore_error = 0):
110 return ly.system (cmd, ignore_error=ignore_error)
112 def strip_extension (f, ext):
113 (p, e) = os.path.splitext (f)
120 allowed_durs = (1, 2, 4, 8, 16, 32, 64, 128)
121 def __init__ (self, clocks):
124 self.clocks = duration_quant_clocks
125 (self.dur, self.num, self.den) = self.dur_num_den (clocks)
127 def dur_num_den (self, clocks):
128 for i in range (len (allowed_tuplet_clocks)):
129 if clocks == allowed_tuplet_clocks[i]:
130 return global_options.allowed_tuplets[i]
132 dur = 0; num = 1; den = 1;
133 g = gcd (clocks, clocks_per_1)
135 (dur, num) = (clocks_per_1 / g, clocks / g)
136 if not dur in self.allowed_durs:
137 dur = 4; num = clocks; den = clocks_per_4
138 return (dur, num, den)
144 elif self.num == 3 and self.dur != 1:
145 s = '%d.' % (self.dur / 2)
147 s = '%d*%d' % (self.dur, self.num)
149 s = '%d*%d/%d' % (self.dur, self.num, self.den)
151 global reference_note
152 reference_note.duration = self
156 def compare (self, other):
157 return self.clocks - other.clocks
166 names = (0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6)
167 alterations = (0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0)
168 alteration_names = ('eses', 'es', '', 'is' , 'isis')
169 def __init__ (self, clocks, pitch, velocity):
171 self.velocity = velocity
174 self.duration = Duration (clocks)
175 (self.octave, self.notename, self.alteration) = self.o_n_a ()
179 # minor scale: la-la (= + 5) '''
181 n = self.names[(self.pitch) % 12]
182 a = self.alterations[(self.pitch) % 12]
184 key = global_options.key
189 a = - self.alterations[(self.pitch) % 12]
192 # By tradition, all scales now consist of a sequence
193 # of 7 notes each with a distinct name, from amongst
194 # a b c d e f g. But, minor scales have a wide
195 # second interval at the top - the 'leading note' is
196 # sharped. (Why? it just works that way! Anything
197 # else doesn't sound as good and isn't as flexible at
198 # saying things. In medieval times, scales only had 6
199 # notes to avoid this problem - the hexachords.)
201 # So, the d minor scale is d e f g a b-flat c-sharp d
202 # - using d-flat for the leading note would skip the
203 # name c and duplicate the name d. Why isn't c-sharp
204 # put in the key signature? Tradition. (It's also
205 # supposedly based on the Pythagorean theory of the
206 # cycle of fifths, but that really only applies to
207 # major scales...) Anyway, g minor is g a b-flat c d
208 # e-flat f-sharp g, and all the other flat minor keys
209 # end up with a natural leading note. And there you
212 # John Sankey <bf250@freenet.carleton.ca>
214 # Let's also do a-minor: a b c d e f gis a
218 o = self.pitch / 12 - 4
222 if (key.sharps == 0 and key.flats == 0
223 and n == 5 and a == -1):
226 elif key.flats == 1 and n == 1 and a == -1:
229 elif key.flats == 2 and n == 4 and a == -1:
232 elif key.sharps == 5 and n == 4 and a == 0:
235 elif key.sharps == 6 and n == 1 and a == 0:
238 elif key.sharps == 7 and n == 5 and a == 0:
242 if key.flats >= 6 and n == 6 and a == 0:
243 n = 0; a = -1; o = o + 1
245 if key.flats >= 7 and n == 2 and a == 0:
249 if key.sharps >= 3 and n == 3 and a == 0:
252 if key.sharps >= 4 and n == 0 and a == 0:
253 n = 6; a = 1; o = o - 1
258 s = chr ((self.notename + 2) % 7 + ord ('a'))
259 return 'Note(%s %s)' % (s, self.duration.dump ())
261 def dump (self, dump_dur=True):
262 global reference_note
263 s = chr ((self.notename + 2) % 7 + ord ('a'))
264 s = s + self.alteration_names[self.alteration + 2]
265 if global_options.absolute_pitches:
268 delta = self.pitch - reference_note.pitch
269 commas = sign (delta) * (abs (delta) / 12)
271 * (self.notename - reference_note.notename) + 7)
273 or ((self.notename == reference_note.notename)
274 and (abs (delta) > 4) and (abs (delta) < 12))):
275 commas = commas + sign (delta)
280 s = s + "," * -commas
283 and self.duration.compare (reference_note.duration))
284 or global_options.explicit_durations):
285 s = s + self.duration.dump ()
287 reference_note = self
294 def __init__ (self, num, den):
299 def bar_clocks (self):
300 return clocks_per_1 * self.num / self.den
303 return 'Time(%d/%d)' % (self.num, self.den)
308 return '\n ' + '\\time %d/%d ' % (self.num, self.den) + '\n '
311 def __init__ (self, seconds_per_1):
313 self.seconds_per_1 = seconds_per_1
316 return 'Tempo(%d)' % self.bpm ()
319 return 4 * 60 / self.seconds_per_1
322 return '\n ' + '\\tempo 4 = %d ' % (self.bpm ()) + '\n '
325 clefs = ('"bass_8"', 'bass', 'violin', '"violin^8"')
326 def __init__ (self, type):
330 return 'Clef(%s)' % self.clefs[self.type]
333 return '\n \\clef %s\n ' % self.clefs[self.type]
336 key_sharps = ('c', 'g', 'd', 'a', 'e', 'b', 'fis')
337 key_flats = ('BUG', 'f', 'bes', 'es', 'as', 'des', 'ges')
339 def __init__ (self, sharps, flats, minor):
346 global_options.key = self
349 if self.sharps and self.flats:
353 k = (ord ('cfbeadg'[self.flats % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
355 k = (ord ('cgdaebf'[self.sharps % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
358 name = chr ((k + 2) % 7 + ord ('a'))
360 name = chr ((k + 2) % 7 + ord ('a'))
362 # fis cis gis dis ais eis bis
363 sharps = (2, 4, 6, 1, 3, 5, 7)
364 # bes es as des ges ces fes
365 flats = (6, 4, 2, 7, 5, 3, 1)
368 if flats[k] <= self.flats:
371 if sharps[k] <= self.sharps:
375 name = name + Note.alteration_names[a + 2]
383 return '\n\n ' + s + '\n '
391 'SEQUENCE_TRACK_NAME',
397 def __init__ (self, type, text):
403 # urg, we should be sure that we're in a lyrics staff
405 if self.type == midi.LYRIC:
406 s = '"%s"' % self.text
407 d = Duration (self.clocks)
408 if (global_options.explicit_durations
409 or d.compare (reference_note.duration)):
410 s = s + Duration (self.clocks).dump ()
412 elif (self.text.strip ()
413 and self.type == midi.SEQUENCE_TRACK_NAME
414 and not self.text == 'control track'):
415 text = self.text.replace ('(MIDI)', '').strip ()
417 s = '\n \\set Staff.instrumentName = "%(text)s"\n ' % locals ()
418 elif self.text.strip ():
419 s = '\n % [' + self.text_types[self.type] + '] ' + self.text + '\n '
423 return 'Text(%d=%s)' % (self.type, self.text)
427 def split_track (track):
434 if data[0] > 0x7f and data[0] < 0xf0:
436 e = (e[0], tuple ([data[0] & 0xf0] + data[1:]))
443 for v in chs.values ():
447 debug ('channel: %d\n' % i)
448 events = events_on_channel (v)
449 t = unthread_notes (events)
454 def quantise_clocks (clocks, quant):
455 q = int (clocks / quant) * quant
457 for tquant in allowed_tuplet_clocks:
458 if int (clocks / tquant) * tquant == clocks:
460 if 2 * (clocks - q) > quant:
464 def end_note (pitches, notes, t, e):
466 (lt, vel) = pitches[e]
476 if duration_quant_clocks:
477 d = quantise_clocks (d, duration_quant_clocks)
479 d = duration_quant_clocks
482 (lt, Note (d, e, vel)))
487 def events_on_channel (channel):
497 if start_quant_clocks:
498 t = quantise_clocks (t, start_quant_clocks)
501 if (e[1][0] == midi.NOTE_OFF
502 or (e[1][0] == midi.NOTE_ON and e[1][2] == 0)):
503 debug ('%d: NOTE OFF: %s' % (t, e[1][1]))
505 debug (' ...treated as OFF')
506 end_note (pitches, notes, t, e[1][1])
508 elif e[1][0] == midi.NOTE_ON:
509 if not pitches.has_key (e[1][1]):
510 debug ('%d: NOTE ON: %s' % (t, e[1][1]))
511 pitches[e[1][1]] = (t, e[1][2])
515 # all include ALL_NOTES_OFF
516 elif (e[1][0] >= midi.ALL_SOUND_OFF
517 and e[1][0] <= midi.POLY_MODE_ON):
519 end_note (pitches, notes, t, i)
521 elif e[1][0] == midi.META_EVENT:
522 if e[1][1] == midi.END_OF_TRACK:
524 end_note (pitches, notes, t, i)
527 elif e[1][1] == midi.SET_TEMPO:
528 (u0, u1, u2) = map (ord, e[1][2])
529 us_per_4 = u2 + 256 * (u1 + 256 * u0)
530 seconds_per_1 = us_per_4 * 4 / 1e6
531 events.append ((t, Tempo (seconds_per_1)))
532 elif e[1][1] == midi.TIME_SIGNATURE:
533 (num, dur, clocks4, count32) = map (ord, e[1][2])
535 events.append ((t, Time (num, den)))
536 elif e[1][1] == midi.KEY_SIGNATURE:
537 (alterations, minor) = map (ord, e[1][2])
540 if alterations < 127:
543 flats = 256 - alterations
545 k = Key (sharps, flats, minor)
546 if not t and global_options.key:
547 # At t == 0, a set --key overrides us
548 k = global_options.key
549 events.append ((t, k))
551 # ugh, must set key while parsing
552 # because Note init uses key
553 # Better do Note.calc () at dump time?
554 global_options.key = k
556 elif (e[1][1] == midi.LYRIC
557 or (global_options.text_lyrics and e[1][1] == midi.TEXT_EVENT)):
559 last_lyric.clocks = t - last_time
560 events.append ((last_time, last_lyric))
562 last_lyric = Text (midi.LYRIC, e[1][2])
564 elif (e[1][1] >= midi.SEQUENCE_NUMBER
565 and e[1][1] <= midi.CUE_POINT):
566 events.append ((t, Text (e[1][1], e[1][2])))
568 if global_options.verbose:
569 sys.stderr.write ("SKIP: %s\n" % `e`)
572 if global_options.verbose:
573 sys.stderr.write ("SKIP: %s\n" % `e`)
577 # last_lyric.clocks = t - last_time
579 last_lyric.clocks = clocks_per_4
580 events.append ((last_time, last_lyric))
585 if i < len (events) and notes[0][0] >= events[i][0]:
588 events.insert (i, notes[0])
592 def unthread_notes (channel):
601 if (e[1].__class__ == Note
602 and ((t == start_busy_t
603 and e[1].clocks + t == end_busy_t)
604 or t >= end_busy_t)):
607 end_busy_t = t + e[1].clocks
608 elif (e[1].__class__ == Time
609 or e[1].__class__ == Key
610 or e[1].__class__ == Text
611 or e[1].__class__ == Tempo):
615 threads.append (thread)
630 def dump_skip (skip, clocks):
631 return skip + Duration (clocks).dump () + ' '
640 if i.__class__ == Note:
645 s = s + dump (notes[0])
646 elif len (notes) > 1:
647 global reference_note
649 s = s + notes[0].dump (dump_dur=False)
652 s = s + i.dump (dump_dur=False)
655 s = s + notes[0].duration.dump () + ' '
659 def dump_bar_line (last_bar_t, t, bar_count):
661 bar_t = time.bar_clocks ()
662 if t - last_bar_t >= bar_t:
663 bar_count = bar_count + (t - last_bar_t) / bar_t
665 if t - last_bar_t == bar_t:
666 s = '\n | %% %(bar_count)d\n ' % locals ()
669 # urg, this will barf at meter changes
670 last_bar_t = last_bar_t + (t - last_bar_t) / bar_t * bar_t
672 return (s, last_bar_t, bar_count)
675 def dump_voice (thread, skip):
676 global reference_note, time
678 # urg LilyPond doesn't start at c4, but
679 # remembers from previous tracks!
680 # reference_note = Note (clocks_per_4, 4*12, 0)
681 ref = Note (0, 4*12, 0)
682 if not reference_note:
685 ref.duration = reference_note.duration
692 if last_e and last_e[0] == e[0]:
696 chs.append ((last_e[0], ch))
703 chs.append ((last_e[0], ch))
713 i = lines[-1].rfind ('\n') + 1
714 if len (lines[-1][i:]) > LINE_BELL:
719 if bar_max and t > time.bar_clocks () * bar_max:
720 d = time.bar_clocks () * bar_max - last_t
721 lines[-1] = lines[-1] + dump_skip (skip, d)
723 errorport.write ('BUG: time skew')
725 (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
728 if bar_max and bar_count > bar_max:
731 lines[-1] = lines[-1] + s
732 lines[-1] = lines[-1] + dump_chord (ch[1])
736 if i.clocks > clocks:
741 (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
743 lines[-1] = lines[-1] + s
745 return '\n '.join (lines) + '\n'
747 def number2ascii (i):
752 s = '%c' % (m + ord ('A')) + s
756 def get_track_name (i):
757 return 'track' + number2ascii (i)
759 def get_channel_name (i):
760 return 'channel' + number2ascii (i)
762 def get_voice_name (i, zero_too_p=False):
764 return 'voice' + number2ascii (i)
767 def get_voice_layout (average_pitch):
769 for i in range (len (average_pitch)):
770 d[average_pitch[i]] = i
771 s = list (reversed (sorted (average_pitch)))
772 non_empty = len (filter (lambda x: x, s))
773 names = ['One', 'Two']
775 names = ['One', 'Three', 'Four', 'Two']
776 layout = map (lambda x: '', range (len (average_pitch)))
777 for i, n in zip (s, names):
783 def dump_track (track, n):
785 track_name = get_track_name (n)
787 average_pitch = track_average_pitch (track)
788 voices = len (filter (lambda x: x, average_pitch[1:]))
789 clef = get_best_clef (average_pitch[0])
793 for channel in track:
795 channel_name = get_channel_name (c)
797 for voice in channel:
798 voice_name = get_voice_name (v)
799 voice_id = track_name + channel_name + voice_name
800 item = voice_first_item (voice)
802 if item and item.__class__ == Note:
804 if global_options.skip:
806 s += '%(voice_id)s = ' % locals ()
807 if not global_options.absolute_pitches:
809 elif item and item.__class__ == Text:
811 s += '%(voice_id)s = \\lyricmode ' % locals ()
814 s += '%(voice_id)s = ' % locals ()
816 if not n and not vv and global_options.key:
817 s += global_options.key.dump ()
818 if average_pitch[vv+1] and voices > 1:
819 s += ' \\voice' + get_voice_layout (average_pitch[1:])[vv] + '\n'
820 s += ' ' + dump_voice (voice, skip)
825 s += '%(track_name)s = <<\n' % locals ()
828 s += clef.dump () + '\n'
832 for channel in track:
834 channel_name = get_channel_name (c)
836 for voice in channel:
837 voice_context_name = get_voice_name (vv, zero_too_p=True)
838 voice_name = get_voice_name (v)
841 voice_id = track_name + channel_name + voice_name
842 item = voice_first_item (voice)
844 if item and item.__class__ == Text:
846 s += ' \\context %(context)s = %(voice_context_name)s \\%(voice_id)s\n' % locals ()
850 def voice_first_item (voice):
852 if (event[1].__class__ == Note
853 or (event[1].__class__ == Text
854 and event[1].type == midi.LYRIC)):
858 def channel_first_item (channel):
859 for voice in channel:
860 first = voice_first_item (voice)
865 def track_first_item (track):
866 for channel in track:
867 first = channel_first_item (channel)
872 def track_average_pitch (track):
876 for channel in track:
877 for voice in channel:
881 if event[1].__class__ == Note:
884 p[v] += event[1].pitch
893 def get_best_clef (average_pitch):
895 if average_pitch <= 3*12:
897 elif average_pitch <= 5*12:
899 elif average_pitch >= 7*12:
903 def convert_midi (in_file, out_file):
904 global clocks_per_1, clocks_per_4, key
905 global start_quant_clocks
906 global duration_quant_clocks
907 global allowed_tuplet_clocks
910 str = open (in_file, 'rb').read ()
911 clocks_max = bar_max * clocks_per_1 * 2
912 midi_dump = midi.parse (str, clocks_max)
914 clocks_per_1 = midi_dump[0][1]
915 clocks_per_4 = clocks_per_1 / 4
918 if global_options.start_quant:
919 start_quant_clocks = clocks_per_1 / global_options.start_quant
921 if global_options.duration_quant:
922 duration_quant_clocks = clocks_per_1 / global_options.duration_quant
924 allowed_tuplet_clocks = []
925 for (dur, num, den) in global_options.allowed_tuplets:
926 allowed_tuplet_clocks.append (clocks_per_1 / dur * num / den)
928 if global_options.verbose:
929 print 'allowed tuplet clocks:', allowed_tuplet_clocks
932 for t in midi_dump[1]:
933 tracks.append (split_track (t))
935 tag = '%% Lily was here -- automatically converted by %s from %s' % ( program_name, in_file)
947 \remove "Note_heads_engraver"
948 \consists "Completion_heads_engraver"
949 \remove "Rest_engraver"
950 \consists "Completion_rest_engraver"
955 for i in global_options.include_header:
956 s += '\n%% included from %(i)s\n' % locals ()
957 s += open (i).read ()
962 for i in range (len (tracks)):
963 s = s + dump_track (tracks[i], i)
965 s += '\n\\score {\n <<\n'
969 track_name = get_track_name (i)
970 item = track_first_item (t)
971 staff_name = track_name
973 if not i and not item and len (tracks) > 1:
975 staff_name = get_track_name (1)
977 elif (item and item.__class__ == Note):
979 elif item and item.__class__ == Text:
982 s += ' \\context %(context)s=%(staff_name)s \\%(track_name)s\n' % locals ()
986 progress (_ ("%s output to `%s'...") % ('LY', out_file))
991 handle = open (out_file, 'w')
997 def get_option_parser ():
998 p = ly.get_option_parser (usage=_ ("%s [OPTION]... FILE") % 'midi2ly',
999 description=_ ("Convert %s to LilyPond input.\n") % 'MIDI',
1000 add_help_option=False)
1002 p.add_option ('-a', '--absolute-pitches',
1003 action='store_true',
1004 help=_ ('print absolute pitches'))
1005 p.add_option ('-d', '--duration-quant',
1007 help=_ ('quantise note durations on DUR'))
1008 p.add_option ('-D', '--debug',
1009 action='store_true',
1010 help=_ ('debug printing'))
1011 p.add_option ('-e', '--explicit-durations',
1012 action='store_true',
1013 help=_ ('print explicit durations'))
1014 p.add_option('-h', '--help',
1016 help=_ ('show this help and exit'))
1017 p.add_option('-i', '--include-header',
1018 help=_ ('prepend FILE to output'),
1022 p.add_option('-k', '--key', help=_ ('set key: ALT=+sharps|-flats; MINOR=1'),
1023 metavar=_ ('ALT[:MINOR]'),
1025 p.add_option ('-o', '--output', help=_ ('write output to FILE'),
1028 p.add_option ('-p', '--preview', help=_ ('preview of first 4 bars'),
1029 action='store_true')
1030 p.add_option ('-s', '--start-quant',help= _ ('quantise note starts on DUR'),
1032 p.add_option ('-S', '--skip',
1033 action = "store_true",
1034 help =_ ("use s instead of r for rests"))
1035 p.add_option ('-t', '--allow-tuplet',
1036 metavar=_ ('DUR*NUM/DEN'),
1038 dest='allowed_tuplets',
1039 help=_ ('allow tuplet durations DUR*NUM/DEN'),
1041 p.add_option ('-V', '--verbose', help=_ ('be verbose'),
1044 p.version = 'midi2ly (LilyPond) @TOPLEVEL_VERSION@'
1045 p.add_option ('--version',
1047 help=_ ('show version number and exit'))
1048 p.add_option ('-w', '--warranty', help=_ ('show warranty and copyright'),
1049 action='store_true',
1051 p.add_option ('-x', '--text-lyrics', help=_ ('treat every text as a lyric'),
1052 action='store_true')
1054 p.add_option_group (ly.display_encode (_ ('Examples')),
1056 $ midi2ly --key=-2:1 --duration-quant=32 --allow-tuplet=4*2/3 --allow-tuplet=2*4/3 foo.midi
1058 p.add_option_group ('',
1060 _ ('Report bugs via %s')
1061 % 'http://post.gmane.org/post.php'
1062 '?group=gmane.comp.gnu.lilypond.bugs') + '\n')
1068 opt_parser = get_option_parser ()
1069 (options, args) = opt_parser.parse_args ()
1071 if options.warranty:
1075 if not args or args[0] == '-':
1076 opt_parser.print_help ()
1077 ly.stderr_write ('\n%s: %s %s\n' % (program_name, _ ('error: '),
1078 _ ('no files specified on command line.')))
1081 if options.duration_quant:
1082 options.duration_quant = int (options.duration_quant)
1085 (alterations, minor) = map (int, (options.key + ':0').split (':'))[0:2]
1088 if alterations >= 0:
1089 sharps = alterations
1091 flats = - alterations
1092 options.key = Key (sharps, flats, minor)
1094 if options.start_quant:
1095 options.start_quant = int (options.start_quant)
1101 options.allowed_tuplets = [map (int, a.replace ('/','*').split ('*'))
1102 for a in options.allowed_tuplets]
1105 sys.stderr.write ('Allowed tuplets: %s\n' % `options.allowed_tuplets`)
1107 global global_options
1108 global_options = options
1113 files = do_options ()
1115 exts = ['.midi', '.mid', '.MID']
1119 g = strip_extension (g, e)
1120 if not os.path.exists (f):
1123 if os.path.exists (n):
1127 if not global_options.output:
1129 outbase = os.path.basename (g)
1130 o = outbase + '-midi.ly'
1131 elif (global_options.output[-1] == os.sep
1132 or os.path.isdir (global_options.output)):
1133 outdir = global_options.output
1134 outbase = os.path.basename (g)
1135 o = os.path.join (outdir, outbase + '-midi.ly')
1137 o = global_options.output
1138 (outdir, outbase) = os.path.split (o)
1140 if outdir and outdir != '.' and not os.path.exists (outdir):
1141 os.mkdir (outdir, 0777)
1145 if __name__ == '__main__':