#!@PYTHON@
+#
+# msdi2ly.py -- LilyPond midi import script
+#
+# source file of the GNU LilyPond music typesetter
+#
+# (c) 1998--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+# Jan Nieuwenhuizen <janneke@gnu.org>
-import midi
-import sys
+
+'''
+TODO:
+ * test on weird and unquantised midi input (lily-devel)
+ * update doc and manpage
+
+ * simply insert clef changes whenever too many ledger lines
+ [to avoid tex capacity exceeded]
+ * do not ever quant skips
+ * better lyrics handling
+ * [see if it is feasible to] move ly-classes to library for use in
+ other converters, while leaving midi specific stuff here
+'''
+
+import getopt
+import os
import string
+import sys
+
+
+################################################################
+# Users of python modules should include this snippet.
+#
+libdir = '@local_lilypond_libdir@'
+if not os.path.isdir (libdir):
+ libdir = '@lilypond_libdir@'
+
+# ugh
+datadir = '@local_lilypond_datadir@'
+if os.environ.has_key ('LILYPONDPREFIX'):
+ datadir = os.environ['LILYPONDPREFIX']
+ while datadir[-1] == os.sep:
+ datadir= datadir[:-1]
+ libdir = datadir.replace ('/share/', '/lib/')
+
+if os.path.exists (os.path.join (datadir, 'lib/lilypond/@TOPLEVEL_VERSION@/')):
+ libdir = os.path.join (libdir, 'lib/lilypond/@TOPLEVEL_VERSION@/')
+
+if os.path.exists (os.path.join (datadir, 'lib/lilypond/current/')):
+ libdir = os.path.join (libdir, 'lib/lilypond/current/')
+
+sys.path.insert (0, os.path.join (libdir, 'python'))
+
+# dynamic relocation, for GUB binaries.
+bindir = os.path.split (sys.argv[0])[0]
+for p in ['share', 'lib']:
+ datadir = os.path.abspath (bindir + '/../%s/lilypond/current/python/' % p)
+ sys.path.insert (0, datadir)
+
+################################################################
+
+import midi
+import lilylib as ly
+################################################################
+################ CONSTANTS
+
+
+output_name = ''
+LINE_BELL = 60
scale_steps = [0,2,4,5,7,9,11]
+global_options = None
+
+
+clocks_per_1 = 1536
+clocks_per_4 = 0
+
+time = 0
+reference_note = 0
+start_quant_clocks = 0
+
+duration_quant_clocks = 0
+allowed_tuplet_clocks = []
+
+
+################################################################
+
+localedir = '@localedir@'
+try:
+ import gettext
+ gettext.bindtextdomain ('lilypond', localedir)
+ gettext.textdomain ('lilypond')
+ _ = gettext.gettext
+except:
+ def _ (s):
+ return s
+
+program_name = sys.argv[0]
+program_version = '@TOPLEVEL_VERSION@'
+
+errorport = sys.stderr
+
+def identify ():
+ sys.stdout.write ('%s (GNU LilyPond) %s\n' % (program_name, program_version))
+
+def warranty ():
+ identify ()
+ sys.stdout.write ('''
+Copyright (c) %s by
+
+ Han-Wen Nienhuys
+ Jan Nieuwenhuizen
+
+%s
+%s
+''' ( '2001--2006',
+ _('Distributed under terms of the GNU General Public License.'),
+ _('It comes with NO WARRANTY.'))
+
+
+def progress (s):
+ errorport.write (s + '\n')
+
+def warning (s):
+ progress (_ ("warning: ") + s)
+
+def error (s):
+ progress (_ ("error: ") + s)
+ raise _ ("Exiting ... ")
+
+def system (cmd, ignore_error = 0):
+ return ly.system (cmd, ignore_error=ignore_error)
+
+def strip_extension (f, ext):
+ (p, e) = os.path.splitext (f)
+ if e == ext:
+ e = ''
+ return p + e
+
+\f
+
+
+class Duration:
+ allowed_durs = (1, 2, 4, 8, 16, 32, 64, 128)
+ def __init__ (self, clocks):
+ self.clocks = clocks
+ if clocks <= 0:
+ self.clocks = duration_quant_clocks
+ (self.dur, self.num, self.den) = self.dur_num_den (clocks)
+
+ def dur_num_den (self, clocks):
+ for i in range (len (allowed_tuplet_clocks)):
+ if clocks == allowed_tuplet_clocks[i]:
+ return global_options.allowed_tuplets[i]
+
+ dur = 0; num = 1; den = 1;
+ g = gcd (clocks, clocks_per_1)
+ if g:
+ (dur, num) = (clocks_per_1 / g, clocks / g)
+ if not dur in self.allowed_durs:
+ dur = 4; num = clocks; den = clocks_per_4
+ return (dur, num, den)
+
+ def dump (self):
+ if self.den == 1:
+ if self.num == 1:
+ s = '%d' % self.dur
+ elif self.num == 3 and self.dur != 1:
+ s = '%d.' % (self.dur / 2)
+ else:
+ s = '%d*%d' % (self.dur, self.num)
+ else:
+ s = '%d*%d/%d' % (self.dur, self.num, self.den)
+
+ global reference_note
+ reference_note.duration = self
+
+ return s
+
+ def compare (self, other):
+ return self.clocks - other.clocks
+
+def sign (x):
+ if x >= 0:
+ return 1
+ else:
+ return -1
+
+class Note:
+ names = (0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6)
+ alterations = (0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0)
+ alteration_names = ('eses', 'es', '', 'is' , 'isis')
+ def __init__ (self, clocks, pitch, velocity):
+ self.pitch = pitch
+ self.velocity = velocity
+ # hmm
+ self.clocks = clocks
+ self.duration = Duration (clocks)
+ (self.octave, self.notename, self.alteration) = self.o_n_a ()
+
+ def o_n_a (self):
+ # major scale: do-do
+ # minor scale: la-la (= + 5) '''
+
+ n = self.names[(self.pitch) % 12]
+ a = self.alterations[(self.pitch) % 12]
+
+ if a and global_options.key.flats:
+ a = - self.alterations[(self.pitch) % 12]
+ n = (n - a) % 7
+
+ # By tradition, all scales now consist of a sequence
+ # of 7 notes each with a distinct name, from amongst
+ # a b c d e f g. But, minor scales have a wide
+ # second interval at the top - the 'leading note' is
+ # sharped. (Why? it just works that way! Anything
+ # else doesn't sound as good and isn't as flexible at
+ # saying things. In medieval times, scales only had 6
+ # notes to avoid this problem - the hexachords.)
+
+ # So, the d minor scale is d e f g a b-flat c-sharp d
+ # - using d-flat for the leading note would skip the
+ # name c and duplicate the name d. Why isn't c-sharp
+ # put in the key signature? Tradition. (It's also
+ # supposedly based on the Pythagorean theory of the
+ # cycle of fifths, but that really only applies to
+ # major scales...) Anyway, g minor is g a b-flat c d
+ # e-flat f-sharp g, and all the other flat minor keys
+ # end up with a natural leading note. And there you
+ # have it.
+
+ # John Sankey <bf250@freenet.carleton.ca>
+ #
+ # Let's also do a-minor: a b c d e f gis a
+ #
+ # --jcn
+
+ o = self.pitch / 12 - 4
+
+ key = global_options.key
+ if key.minor:
+ # as -> gis
+ if key.sharps == 0 and key.flats == 0 \
+ and n == 5 and a == -1:
+ n = 4; a = 1
+ # des -> cis
+ elif key.flats == 1 and n == 1 and a == -1:
+ n = 0; a = 1
+ # ges -> fis
+ elif key.flats == 2 and n == 4 and a == -1:
+ n = 3; a = 1
+ # g -> fisis
+ elif key.sharps == 5 and n == 4 and a == 0:
+ n = 3; a = 2
+ # d -> cisis
+ elif key.sharps == 6 and n == 1 and a == 0:
+ n = 0; a = 2
+ # a -> gisis
+ elif key.sharps == 7 and n == 5 and a == 0:
+ n = 4; a = 2
+
+ # b -> ces
+ if key.flats >= 6 and n == 6 and a == 0:
+ n = 0; a = -1; o = o + 1
+ # e -> fes
+ if key.flats >= 7 and n == 2 and a == 0:
+ n = 3; a = -1
+
+ # f -> eis
+ if key.sharps >= 3 and n == 3 and a == 0:
+ n = 2; a = 1
+ # c -> bis
+ if key.sharps >= 4 and n == 0 and a == 0:
+ n = 6; a = 1; o = o - 1
+
+ return (o, n, a)
+
+ def __repr__ (self):
+ s = chr ((self.notename + 2) % 7 + ord ('a'))
+ return 'Note(%s %s)' % (s, self.duration.dump())
+
+ def dump (self, dump_dur = 1):
+ global reference_note
+ s = chr ((self.notename + 2) % 7 + ord ('a'))
+ s = s + self.alteration_names[self.alteration + 2]
+ if global_options.absolute_pitches:
+ commas = self.octave
+ else:
+ delta = self.pitch - reference_note.pitch
+ commas = sign (delta) * (abs (delta) / 12)
+ if ((sign (delta) \
+ * (self.notename - reference_note.notename) + 7) \
+ % 7 >= 4) \
+ or ((self.notename == reference_note.notename) \
+ and (abs (delta) > 4) and (abs (delta) < 12)):
+ commas = commas + sign (delta)
+
+ if commas > 0:
+ s = s + "'" * commas
+ elif commas < 0:
+ s = s + "," * -commas
+
+ ## FIXME: compile fix --jcn
+ if dump_dur and (global_options.explicit_durations \
+ or Duration.compare (self.duration,
+ reference_note.duration)):
+ s = s + self.duration.dump ()
+
+ reference_note = self
+
+ # TODO: move space
+ return s + ' '
+
+
+class Time:
+ def __init__ (self, num, den):
+ self.clocks = 0
+ self.num = num
+ self.den = den
+
+ def bar_clocks (self):
+ return clocks_per_1 * self.num / self.den
+
+ def __repr__ (self):
+ return 'Time(%d/%d)' % (self.num, self.den)
+
+ def dump (self):
+ global time
+ time = self
+ return '\n ' + '\\time %d/%d ' % (self.num, self.den) + '\n '
+
+class Tempo:
+ def __init__ (self, seconds_per_1):
+ self.clocks = 0
+ self.seconds_per_1 = seconds_per_1
+
+ def __repr__ (self):
+ return 'Tempo(%d)' % self.bpm ()
+
+ def bpm (self):
+ return 4 * 60 / self.seconds_per_1
+
+ def dump (self):
+ return '\n ' + '\\tempo 4 = %d ' % (self.bpm()) + '\n '
+
+class Clef:
+ clefs = ('"bass_8"', 'bass', 'violin', '"violin^8"')
+ def __init__ (self, type):
+ self.type = type
+
+ def __repr__ (self):
+ return 'Clef(%s)' % self.clefs[self.type]
+
+ def dump (self):
+ return '\n \\clef %s\n ' % self.clefs[self.type]
+
+class Key:
+ key_sharps = ('c', 'g', 'd', 'a', 'e', 'b', 'fis')
+ key_flats = ('BUG', 'f', 'bes', 'es', 'as', 'des', 'ges')
+
+ def __init__ (self, sharps, flats, minor):
+ self.clocks = 0
+ self.flats = flats
+ self.sharps = sharps
+ self.minor = minor
+
+ def dump (self):
+ global key
+ key = self
+
+ s = ''
+ if self.sharps and self.flats:
+ pass
+ else:
+ if self.flats:
+ k = (ord ('cfbeadg'[self.flats % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
+ else:
+ k = (ord ('cgdaebf'[self.sharps % 7]) - ord ('a') - 2 -2 * self.minor + 7) % 7
+
+ if not self.minor:
+ name = chr ((k + 2) % 7 + ord ('a'))
+ else:
+ name = chr ((k + 2) % 7 + ord ('a'))
+
+ # fis cis gis dis ais eis bis
+ sharps = (2, 4, 6, 1, 3, 5, 7)
+ # bes es as des ges ces fes
+ flats = (6, 4, 2, 7, 5, 3, 1)
+ a = 0
+ if self.flats:
+ if flats[k] <= self.flats:
+ a = -1
+ else:
+ if sharps[k] <= self.sharps:
+ a = 1
+
+ if a:
+ name = name + Note.alteration_names[a + 2]
+
+ s = '\\key ' + name
+ if self.minor:
+ s = s + ' \\minor'
+ else:
+ s = s + ' \\major'
+
+ return '\n\n ' + s + '\n '
+
+
+class Text:
+ text_types = (
+ 'SEQUENCE_NUMBER',
+ 'TEXT_EVENT',
+ 'COPYRIGHT_NOTICE',
+ 'SEQUENCE_TRACK_NAME',
+ 'INSTRUMENT_NAME',
+ 'LYRIC',
+ 'MARKER',
+ 'CUE_POINT',)
+
+ def __init__ (self, type, text):
+ self.clocks = 0
+ self.type = type
+ self.text = text
+
+ def dump (self):
+ # urg, we should be sure that we're in a lyrics staff
+ if self.type == midi.LYRIC:
+ s = '"%s"' % self.text
+ d = Duration (self.clocks)
+ if global_options.explicit_durations \
+ or Duration.compare (d,
+ reference_note.duration):
+ s = s + Duration (self.clocks).dump ()
+ s = s + ' '
+ else:
+ s = '\n % [' + self.text_types[self.type] + '] ' + self.text + '\n '
+ return s
+
+ def __repr__ (self):
+ return 'Text(%d=%s)' % (self.type, self.text)
+
+
def split_track (track):
chs = {}
chs[i] = []
for e in track:
- data = list (e[1])
- c = data[0] & 0x0f
- e = (e[0], tuple ([data[0] & 0xf0] + data[1:]))
- chs[c].append (e)
+ data = list (e[1])
+ if data[0] > 0x7f and data[0] < 0xf0:
+ c = data[0] & 0x0f
+ e = (e[0], tuple ([data[0] & 0xf0] + data[1:]))
+ chs[c].append (e)
+ else:
+ chs[0].append (e)
for i in range (16):
if chs[i] == []:
del chs[i]
- whatarewes = []
+ threads = []
for v in chs.values ():
- ns = notes_on_channel (v)
- dinges = unthread_notes (ns)
- if len (dinges):
- whatarewes.append (dinges)
- return whatarewes
+ events = events_on_channel (v)
+ thread = unthread_notes (events)
+ if len (thread):
+ threads.append (thread)
+ return threads
-class Note:
- def __init__ (self, duration, pitch, velocity):
- self.velocity = velocity
- self.pitch = pitch
- self.duration = duration
+def quantise_clocks (clocks, quant):
+ q = int (clocks / quant) * quant
+ if q != clocks:
+ for tquant in allowed_tuplet_clocks:
+ if int (clocks / tquant) * tquant == clocks:
+ return clocks
+ if 2 * (clocks - q) > quant:
+ q = q + quant
+ return q
- def duration_compare (a,b):
- if a.duration < b.duration :
- return -1
- elif a.duration > b.duration:
- return 1
- else:
- return 0
-
-def notes_on_channel (channel):
+def end_note (pitches, notes, t, e):
+ try:
+ (lt, vel) = pitches[e]
+ del pitches[e]
+
+ i = len (notes) - 1
+ while i > 0:
+ if notes[i][0] > lt:
+ i = i -1
+ else:
+ break
+ d = t - lt
+ if duration_quant_clocks:
+ d = quantise_clocks (d, duration_quant_clocks)
+ if not d:
+ d = duration_quant_clocks
+
+ notes.insert (i + 1,
+ (lt, Note (d, e, vel)))
+
+ except KeyError:
+ pass
+
+def events_on_channel (channel):
pitches = {}
- nch = []
+ notes = []
+ events = []
+ last_lyric = 0
+ last_time = 0
for e in channel:
t = e[0]
- if e[1][0] == midi.NOTE_ON:
+ if start_quant_clocks:
+ t = quantise_clocks (t, start_quant_clocks)
+
+
+ if e[1][0] == midi.NOTE_OFF \
+ or (e[1][0] == midi.NOTE_ON and e[1][2] == 0):
+ end_note (pitches, notes, t, e[1][1])
+
+ elif e[1][0] == midi.NOTE_ON:
if not pitches.has_key (e[1][1]):
pitches[e[1][1]] = (t, e[1][2])
- elif e[1][0] == midi.NOTE_OFF:
- try:
- (lt, vel) = pitches[e[1][1]]
- del pitches[e[1][1]]
- nch.append ((t, Note (t-lt, e[1][1], vel)))
+ # all include ALL_NOTES_OFF
+ elif e[1][0] >= midi.ALL_SOUND_OFF \
+ and e[1][0] <= midi.POLY_MODE_ON:
+ for i in pitches.keys ():
+ end_note (pitches, notes, t, i)
- except KeyError:
+ elif e[1][0] == midi.META_EVENT:
+ if e[1][1] == midi.END_OF_TRACK:
+ for i in pitches.keys ():
+ end_note (pitches, notes, t, i)
+ break
+
+ elif e[1][1] == midi.SET_TEMPO:
+ (u0, u1, u2) = map (ord, e[1][2])
+ us_per_4 = u2 + 256 * (u1 + 256 * u0)
+ seconds_per_1 = us_per_4 * 4 / 1e6
+ events.append ((t, Tempo (seconds_per_1)))
+ elif e[1][1] == midi.TIME_SIGNATURE:
+ (num, dur, clocks4, count32) = map (ord, e[1][2])
+ den = 2 ** dur
+ events.append ((t, Time (num, den)))
+ elif e[1][1] == midi.KEY_SIGNATURE:
+ (alterations, minor) = map (ord, e[1][2])
+ sharps = 0
+ flats = 0
+ if alterations < 127:
+ sharps = alterations
+ else:
+ flats = 256 - alterations
+
+ k = Key (sharps, flats, minor)
+ events.append ((t, k))
+
+ # ugh, must set key while parsing
+ # because Note init uses key
+ # Better do Note.calc () at dump time?
+ global key
+ key = k
+
+ elif e[1][1] == midi.LYRIC \
+ or (global_options.text_lyrics and e[1][1] == midi.TEXT_EVENT):
+ if last_lyric:
+ last_lyric.clocks = t - last_time
+ events.append ((last_time, last_lyric))
+ last_time = t
+ last_lyric = Text (midi.LYRIC, e[1][2])
+
+ elif e[1][1] >= midi.SEQUENCE_NUMBER \
+ and e[1][1] <= midi.CUE_POINT:
+ events.append ((t, Text (e[1][1], e[1][2])))
+ else:
+ if global_options.verbose:
+ sys.stderr.write ("SKIP: %s\n" % `e`)
pass
else:
+ if global_options.verbose:
+ sys.stderr.write ("SKIP: %s\n" % `e`)
pass
-
- return nch
+
+ if last_lyric:
+ # last_lyric.clocks = t - last_time
+ # hmm
+ last_lyric.clocks = clocks_per_4
+ events.append ((last_time, last_lyric))
+ last_lyric = 0
+
+ i = 0
+ while len (notes):
+ if i < len (events) and notes[0][0] >= events[i][0]:
+ i = i + 1
+ else:
+ events.insert (i, notes[0])
+ del notes[0]
+ return events
def unthread_notes (channel):
threads = []
todo = []
for e in channel:
t = e[0]
- if (t == start_busy_t and e[1].duration + t == end_busy_t) \
- or t >= end_busy_t:
+ if e[1].__class__ == Note \
+ and ((t == start_busy_t \
+ and e[1].clocks + t == end_busy_t) \
+ or t >= end_busy_t):
thread.append (e)
start_busy_t = t
- end_busy_t = t + e[1].duration
+ end_busy_t = t + e[1].clocks
+ elif e[1].__class__ == Time \
+ or e[1].__class__ == Key \
+ or e[1].__class__ == Text \
+ or e[1].__class__ == Tempo:
+ thread.append (e)
else:
- todo.append(e)
+ todo.append (e)
threads.append (thread)
channel = todo
b = c
return a
-def dump_skip (dt):
- return 's' + dump_duration (dt)
-
-def dump_duration (dur):
- g = gcd (dur, 384)
- s = '4'
- (p,q) = (dur / g, 384 / g)
- if (p == 1 and q == 1) :
- pass
- else:
- if p <> 1:
- s = '*%d'% p
- if q <> 1:
- s = '*%d'% q
- return s
-
+def dump_skip (skip, clocks):
+ return skip + Duration (clocks).dump () + ' '
-def dump_note (note):
- p = note.pitch
- oct = p / 12
- step = p % 12
-
- i = 0
- while i < len (scale_steps):
- if scale_steps[i] > step:
- break
- i = i+1
-
- i = i-1
- str = chr ((i + 2) % 7 + ord ('a'))
- if scale_steps[i] <> step:
- str = str + 'is'
-
- return ' %s' % str + dump_duration (note.duration)
+def dump (self):
+ return self.dump ()
def dump_chord (ch):
s = ''
- if len(ch) == 1:
- s = dump_note (ch[0])
- else:
- s = '<' + string.join (map (dump_note, ch)) + '>'
+ notes = []
+ for i in ch:
+ if i.__class__ == Note:
+ notes.append (i)
+ else:
+ s = s + i.dump ()
+ if len (notes) == 1:
+ s = s + dump (notes[0])
+ elif len (notes) > 1:
+ global reference_note
+ s = s + '<'
+ s = s + notes[0].dump (dump_dur = 0)
+ r = reference_note
+ for i in notes[1:]:
+ s = s + i.dump (dump_dur = 0 )
+ s = s + '>'
+
+ s = s + notes[0].duration.dump() + ' '
+ reference_note = r
return s
-# thread?
-def dump_channel (thread):
+def dump_bar_line (last_bar_t, t, bar_count):
+ s = ''
+ bar_t = time.bar_clocks ()
+ if t - last_bar_t >= bar_t:
+ bar_count = bar_count + (t - last_bar_t) / bar_t
+
+ if t - last_bar_t == bar_t:
+ s = '|\n %% %d\n ' % bar_count
+ last_bar_t = t
+ else:
+ # urg, this will barf at meter changes
+ last_bar_t = last_bar_t + (t - last_bar_t) / bar_t * bar_t
+
+ return (s, last_bar_t, bar_count)
+
+
+def dump_channel (thread, skip):
+ global key, reference_note, time
+
+ key = Key (0, 0, 0)
+ time = Time (4, 4)
+ # urg LilyPond doesn't start at c4, but
+ # remembers from previous tracks!
+ # reference_note = Note (clocks_per_4, 4*12, 0)
+ reference_note = Note (0, 4*12, 0)
last_e = None
chs = []
ch = []
chs.append ((last_e[0], ch))
t = 0
last_t = 0
-
- s = ''
- for ch in chs:
+ last_bar_t = 0
+ bar_count = 1
+
+ lines = ['']
+ for ch in chs:
t = ch[0]
- if t - last_t:
- s = s + dump_skip (t-last_t)
+
+ i = string.rfind (lines[-1], '\n') + 1
+ if len (lines[-1][i:]) > LINE_BELL:
+ lines.append ('')
- s = s + dump_chord (ch[1])
- last_t = t + ch[1][0].duration
+ if t - last_t > 0:
+ lines[-1] = lines[-1] + dump_skip (skip, t-last_t)
+ elif t - last_t < 0:
+ errorport.write ('BUG: time skew')
+
+ (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
+ t, bar_count)
+ lines[-1] = lines[-1] + s
- return s
+ lines[-1] = lines[-1] + dump_chord (ch[1])
-def dump_notes (channel):
- on_hold = []
- s = ''
- for e in channel:
- if e[0] <> last_t:
- s = s + dump_chord (on_hold)
- on_hold = []
- last_t = e[0]
+ clocks = 0
+ for i in ch[1]:
+ if i.clocks > clocks:
+ clocks = i.clocks
+
+ last_t = t + clocks
+
+ (s, last_bar_t, bar_count) = dump_bar_line (last_bar_t,
+ last_t, bar_count)
+ lines[-1] = lines[-1] + s
- on_hold.append (e)
- return s
+ return string.join (lines, '\n ') + '\n'
+
+def track_name (i):
+ return 'track%c' % (i + ord ('A'))
+
+def channel_name (i):
+ return 'channel%c' % (i + ord ('A'))
def dump_track (channels, n):
- s = ''
- track = 'track%c' % (n + ord ('A'))
+ s = '\n'
+ track = track_name (n)
+ clef = guess_clef (channels)
+
for i in range (len (channels)):
- channel = 'channel%c' % (i + ord ('A'))
- s = s + '%s = \\context Thread=%s \\notes {\n' % (track + channel, track + channel)
- s = s + ' ' + dump_channel (channels[i][0])
- s = s + '\n}\n'
+ channel = channel_name (i)
+ item = thread_first_item (channels[i])
+
+ if item and item.__class__ == Note:
+ skip = 's'
+ s = s + '%s = ' % (track + channel)
+ if not global_options.absolute_pitches:
+ s = s + '\\relative c '
+ elif item and item.__class__ == Text:
+ skip = '" "'
+ s = s + '%s = \\lyricmode ' % (track + channel)
+ else:
+ skip = '\\skip '
+ s = s + '%s = ' % (track + channel)
+ s = s + '{\n'
+ s = s + ' ' + dump_channel (channels[i][0], skip)
+ s = s + '}\n\n'
- s = s + '%s = \\context Staff=%s <\n' % (track, track)
+ s = s + '%s = <<\n' % track
+
+ if clef.type != 2:
+ s = s + clef.dump () + '\n'
for i in range (len (channels)):
- channel = 'channel%c' % (i + ord ('A'))
- s = s + ' \\context Voice = %s \\%s\n' % (channel, track + channel)
- s = s + '\n>\n'
+ channel = channel_name (i)
+ item = thread_first_item (channels[i])
+ if item and item.__class__ == Text:
+ s = s + ' \\context Lyrics = %s \\%s\n' % (channel,
+ track + channel)
+ else:
+ s = s + ' \\context Voice = %s \\%s\n' % (channel,
+ track + channel)
+ s = s + '>>\n\n'
return s
-
+
+def thread_first_item (thread):
+ for chord in thread:
+ for event in chord:
+ if (event[1].__class__ == Note
+ or (event[1].__class__ == Text
+ and event[1].type == midi.LYRIC)):
+
+ return event[1]
+ return None
+
+def track_first_item (track):
+ for thread in track:
+ first = thread_first_item (thread)
+ if first:
+ return first
+ return None
+
+def guess_clef (track):
+ i = 0
+ p = 0
+ for thread in track:
+ for chord in thread:
+ for event in chord:
+ if event[1].__class__ == Note:
+ i = i + 1
+ p = p + event[1].pitch
+ if i and p / i <= 3*12:
+ return Clef (0)
+ elif i and p / i <= 5*12:
+ return Clef (1)
+ elif i and p / i >= 7*12:
+ return Clef (3)
+ else:
+ return Clef (2)
-def convert_midi (f):
- str = open (f).read ()
+
+def convert_midi (in_file, out_file):
+ global clocks_per_1, clocks_per_4, key
+ global start_quant_clocks
+ global duration_quant_clocks
+ global allowed_tuplet_clocks
+
+ str = open (in_file).read ()
midi_dump = midi.parse (str)
+
+ clocks_per_1 = midi_dump[0][1]
+ clocks_per_4 = clocks_per_1 / 4
+
+ if global_options.start_quant:
+ start_quant_clocks = clocks_per_1 / global_options.start_quant
+
+ if global_options.duration_quant:
+ duration_quant_clocks = clocks_per_1 / global_options.duration_quant
+
+ allowed_tuplet_clocks = []
+ for (dur, num, den) in global_options.allowed_tuplets:
+ allowed_tuplet_clocks.append (clocks_per_1 * num / (dur * den))
tracks = []
for t in midi_dump[1]:
+ key = Key (0, 0, 0)
tracks.append (split_track (t))
+ tag = '%% Lily was here -- automatically converted by %s from %s' % ( program_name, f)
+
+
s = ''
+ s = tag + '\n\\version "2.7.18"\n\n'
for i in range (len (tracks)):
s = s + dump_track (tracks[i], i)
- s = s + '\n\\score {\n <\n'
- for i in range (len (tracks)):
- track = 'track%c' % (i + ord ('A'))
- s = s + ' \\context Staff=%s \\%s\n' % (track, track)
- s = s + '\n >\n}\n'
+ s = s + '\n\\score {\n <<\n'
+
+ i = 0
+ for t in tracks:
+ track = track_name (i)
+ item = track_first_item (t)
+
+ if item and item.__class__ == Note:
+ s = s + ' \\context Staff=%s \\%s\n' % (track, track)
+ elif item and item.__class__ == Text:
+ s = s + ' \\context Lyrics=%s \\%s\n' % (track, track)
+
+ i += 1
+ s = s + ' >>\n}\n'
+
+ progress (_ ("%s output to `%s'...") % ('LY', o))
+
+ if o == '-':
+ handle = sys.stdout
+ else:
+ handle = open (out_file, 'w')
+
+ handle.write (s)
+ handle.close ()
+
+
+def get_option_parser ():
+ p = ly.get_option_parser (usage='midi2ly [OPTIONS] FILE',
+ version="midi2ly (LilyPond) @TOPLEVEL_VERSION@",
+ description=_('''Convert MIDI to LilyPond source.'''))
+
+ p.add_option ('-a', '--absolute-pitches',
+ action='store_true',
+ help=_ ("print absolute pitches"))
+ p.add_option ('-d', '--duration-quant',
+ metavar= _("DUR"),
+ help=_("quantise note durations on DUR"))
+ p.add_option ('-e', '--explicit-durations',
+ action='store_true',
+ help=_ ("print explicit durations"))
+ p.add_option('-k', '--key', help=_ ("set key: ALT=+sharps|-flats; MINOR=1"),
+ metavar=_ ("ALT[:MINOR]"),
+ default='0'),
+ p.add_option ('-o', '--output', help=_("write output to FILE"),
+ metavar=_("FILE"),
+ action='store')
+ p.add_option ('-s', '--start-quant',help= _ ("quantise note starts on DUR"),
+ metavar=_ ("DUR"))
+ p.add_option ('-t', '--allow-tuplet',
+ metavar=_ ("DUR*NUM/DEN"),
+ action = "append",
+ dest="allowed_tuplets",
+ help=_ ("allow tuplet durations DUR*NUM/DEN"),
+ default=[])
+ p.add_option ('-V', '--verbose', help=_ ("be verbose"),
+ action='store_true',
+ ),
+ p.add_option ('-w', '--warranty', help=_ ("show warranty"),
+ action='store_true',
+ ),
+ p.add_option ('-x', '--text-lyrics', help=_("treat every text as a lyric"),
+ action='store_true')
+
+ p.add_option_group (_ ("example"),
+ description = r'''
+ midi2ly --key=-2:1 --duration-quant=32 \
+ --allow-tuplet=4*2/3 --allow-tuplet=2*4/3 foo.midi
+''')
+
+ p.add_option_group ('bugs',
+ description='''Report bugs via http://post.gmane.org/post.php'''
+ '''?group=gmane.comp.gnu.lilypond.bugs\n''')
- sys.stdout.write (s)
+ return p
+
+
+
+def do_options ():
+ opt_parser = get_option_parser()
+ (options, args) = opt_parser.parse_args ()
+
+ if not args or args[0] == '-':
+ opt_parser.print_help ()
+ sys.stderr.write ('\n%s: %s %s\n' % (program_name, _ ("error: "),
+ _ ("no files specified on command line.")))
+ sys.exit (2)
+
+ if options.duration_quant:
+ options.duration_quant = string.atoi (options.duration_quant)
+
+ if options.warranty:
+ warranty ()
+ sys.exit (0)
+ if 1:
+ (alterations, minor) = map (string.atoi, string.split (options.key + ':0', ':'))[0:2]
+ sharps = 0
+ flats = 0
+ if alterations >= 0:
+ sharps = alterations
+ else:
+ flats = - alterations
+
+ options.key = Key (sharps, flats, minor)
+
+
+ if options.start_quant:
+ options.start_quant = string.atoi (a)
+ options.allowed_tuplets = [map (string.atoi, a.replace ('/','*').split ('*'))
+ for a in options.allowed_tuplets]
+
+ global global_options
+ global_options = options
+
+ return args
+
+
+files = do_options()
+
+for f in files:
+ g = f
+ g = strip_extension (g, '.midi')
+ g = strip_extension (g, '.mid')
+ g = strip_extension (g, '.MID')
+ (outdir, outbase) = ('','')
+
+ if not output_name:
+ outdir = '.'
+ outbase = os.path.basename (g)
+ o = os.path.join (outdir, outbase + '-midi.ly')
+ elif output_name[-1] == os.sep:
+ outdir = output_name
+ outbase = os.path.basename (g)
+ os.path.join (outdir, outbase + '-gen.ly')
+ else:
+ o = output_name
+ (outdir, outbase) = os.path.split (o)
+
+ if outdir != '.' and outdir != '':
+ try:
+ os.mkdir (outdir, 0777)
+ except OSError:
+ pass
+
+ convert_midi (f, o)
-for f in sys.argv[1:]:
- convert_midi (f)
projects / lilypond.git / blobdiff