-#!@PYTHON@
+#!@TARGET_PYTHON@
+#
+# midi2ly.py -- LilyPond midi import script
-import midi
+# This file is part of LilyPond, the GNU music typesetter.
+#
+# Copyright (C) 1998--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+# Jan Nieuwenhuizen <janneke@gnu.org>
+#
+# LilyPond is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# LilyPond is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+
+
+'''
+TODO:
+'''
+
+import os
import sys
-import string
-
-scale_steps = [0,2,4,5,7,9,11]
-
-def split_track (track):
- chs = {}
- for i in range(16):
- 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)
-
- for i in range (16):
- if chs[i] == []:
- del chs[i]
-
- whatarewes = []
- for v in chs.values ():
- ns = notes_on_channel (v)
- dinges = unthread_notes (ns)
- if len (dinges):
- whatarewes.append (dinges)
- return whatarewes
+"""
+@relocate-preamble@
+"""
+
+import midi
+import lilylib as ly
+global _;_=ly._
+
+################################################################
+## CONSTANTS
+
+
+LINE_BELL = 60
+scale_steps = [0, 2, 4, 5, 7, 9, 11]
+global_options = None
+
+clocks_per_1 = 1536
+clocks_per_4 = 0
+
+time = None
+reference_note = 0
+start_quant_clocks = 0
+
+duration_quant_clocks = 0
+allowed_tuplet_clocks = []
+bar_max = 0
+
+################################################################
+
+
+program_name = sys.argv[0]
+program_version = '@TOPLEVEL_VERSION@'
+
+authors = ('Jan Nieuwenhuizen <janneke@gnu.org>',
+ 'Han-Wen Nienhuys <hanwen@xs4all.nl>')
+
+errorport = sys.stderr
+
+def identify ():
+ sys.stdout.write ('%s (GNU LilyPond) %s\n' % (program_name, program_version))
+
+def warranty ():
+ identify ()
+ ly.encoded_write (sys.stdout, '''
+%s
+
+ %s
+
+%s
+%s
+''' % ( _ ('Copyright (c) %s by') % '1998--2012',
+ '\n '.join (authors),
+ _ ('Distributed under terms of the GNU General Public License.'),
+ _ ('It comes with NO WARRANTY.')))
+
+def progress (s):
+ ly.encoded_write (errorport, s + '\n')
+
+def warning (s):
+ progress (_ ("warning: ") + s)
+
+def error (s):
+ progress (_ ("error: ") + s)
+ raise Exception (_ ("Exiting... "))
+
+def debug (s):
+ if global_options.debug:
+ progress ("debug: " + s)
+
+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
+
+
+class Duration:
+ allowed_durs = (1, 2, 4, 8, 16, 32, 64, 128)
+ def __init__ (self, clocks):
+ self.clocks = 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:
- def __init__ (self, duration, pitch, velocity):
- self.velocity = velocity
- self.pitch = pitch
- self.duration = duration
-
- 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):
- pitches = {}
-
- nch = []
- for e in channel:
- t = e[0]
-
- if 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)))
-
- except KeyError:
- pass
- else:
- pass
-
- return nch
+ 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]
+
+ key = global_options.key
+ if not key:
+ key = Key (0, 0, 0)
+
+ if a and 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
+
+ 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=True):
+ 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
+
+ if ((dump_dur
+ and self.duration.compare (reference_note.duration))
+ or global_options.explicit_durations):
+ 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_options.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
+ s = ''
+ if self.type == midi.LYRIC:
+ s = '"%s"' % self.text
+ d = Duration (self.clocks)
+ if (global_options.explicit_durations
+ or d.compare (reference_note.duration)):
+ s = s + Duration (self.clocks).dump ()
+ s = s + ' '
+ elif (self.text.strip ()
+ and self.type == midi.SEQUENCE_TRACK_NAME
+ and not self.text == 'control track'
+ and not self.track.lyrics_p_):
+ text = self.text.replace ('(MIDI)', '').strip ()
+ if text:
+ s = '\n \\set Staff.instrumentName = "%(text)s"\n ' % locals ()
+ elif self.text.strip ():
+ s = '\n % [' + self.text_types[self.type] + '] ' + self.text + '\n '
+ return s
+
+ def __repr__ (self):
+ return 'Text(%d=%s)' % (self.type, self.text)
+
+def get_voice (channel, music):
+ debug ('channel: ' + str (channel) + '\n')
+ return unthread_notes (music)
+
+class Channel:
+ def __init__ (self, number):
+ self.number = number
+ self.events = []
+ self.music = None
+ def add (self, event):
+ self.events.append (event)
+ def get_voice (self):
+ if not self.music:
+ self.music = self.parse ()
+ return get_voice (self.number, self.music)
+ def parse (self):
+ pitches = {}
+ notes = []
+ music = []
+ last_lyric = 0
+ last_time = 0
+ for e in self.events:
+ t = e[0]
+
+ 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)):
+ debug ('%d: NOTE OFF: %s' % (t, e[1][1]))
+ if not e[1][2]:
+ debug (' ...treated as OFF')
+ end_note (pitches, notes, t, e[1][1])
+
+ elif e[1][0] == midi.NOTE_ON:
+ if not pitches.has_key (e[1][1]):
+ debug ('%d: NOTE ON: %s' % (t, e[1][1]))
+ pitches[e[1][1]] = (t, e[1][2])
+ else:
+ debug ('...ignored')
+
+ # 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:
+ end_note (pitches, notes, t, i)
+
+ elif e[1][0] == midi.META_EVENT:
+ if e[1][1] == midi.END_OF_TRACK:
+ for i in pitches:
+ 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
+ music.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
+ music.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)
+ if not t and global_options.key:
+ # At t == 0, a set --key overrides us
+ k = global_options.key
+ music.append ((t, k))
+
+ # ugh, must set key while parsing
+ # because Note init uses key
+ # Better do Note.calc () at dump time?
+ global_options.key = k
+
+ elif (e[1][1] == midi.LYRIC
+ or (global_options.text_lyrics
+ and e[1][1] == midi.TEXT_EVENT)):
+ self.lyrics_p_ = True
+ if last_lyric:
+ last_lyric.clocks = t - last_time
+ music.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):
+ text = Text (e[1][1], e[1][2])
+ text.track = self
+ music.append ((t, text))
+ if (text.type == midi.SEQUENCE_TRACK_NAME):
+ self.name = text.text
+ else:
+ if global_options.verbose:
+ sys.stderr.write ("SKIP: %s\n" % `e`)
+ else:
+ if global_options.verbose:
+ sys.stderr.write ("SKIP: %s\n" % `e`)
+
+ if last_lyric:
+ # last_lyric.clocks = t - last_time
+ # hmm
+ last_lyric.clocks = clocks_per_4
+ music.append ((last_time, last_lyric))
+ last_lyric = 0
+
+ i = 0
+ while len (notes):
+ if i < len (music) and notes[0][0] >= music[i][0]:
+ i = i + 1
+ else:
+ music.insert (i, notes[0])
+ del notes[0]
+ return music
+
+class Track (Channel):
+ def __init__ (self):
+ Channel.__init__ (self, None)
+ self.name = None
+ self.channels = {}
+ self.lyrics_p_ = False
+ def _add (self, event):
+ self.events.append (event)
+ def add (self, event, channel=None):
+ if channel == None:
+ self._add (event)
+ else:
+ self.channels[channel] = self.channels.get (channel, Channel (channel))
+ self.channels[channel].add (event)
+ def get_voices (self):
+ return ([self.get_voice ()]
+ + [self.channels[k].get_voice ()
+ for k in sorted (self.channels.keys ())])
+
+def create_track (events):
+ track = Track ()
+ for e in events:
+ data = list (e[1])
+ if data[0] > 0x7f and data[0] < 0xf0:
+ channel = data[0] & 0x0f
+ e = (e[0], tuple ([data[0] & 0xf0] + data[1:]))
+ track.add (e, channel)
+ else:
+ track.add (e)
+ return track
+
+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 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 unthread_notes (channel):
- threads = []
- while channel:
- thread = []
- end_busy_t = 0
- start_busy_t = 0
- 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:
- thread.append (e)
- start_busy_t = t
- end_busy_t = t + e[1].duration
- else:
- todo.append(e)
- threads.append (thread)
- channel = todo
-
- return threads
+ threads = []
+ while channel:
+ thread = []
+ end_busy_t = 0
+ start_busy_t = 0
+ todo = []
+ for e in channel:
+ t = e[0]
+ 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].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)
+ threads.append (thread)
+ channel = todo
+
+ return threads
def gcd (a,b):
- if b == 0:
- return a
- c = a
- while c:
- c = a % b
- a = b
- 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_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)
+ if b == 0:
+ return a
+ c = a
+ while c:
+ c = a % b
+ a = b
+ b = c
+ return a
+
+def dump_skip (skip, clocks):
+ return skip + Duration (clocks).dump () + ' '
+
+def dump (d):
+ return d.dump ()
def dump_chord (ch):
- s = ''
- if len(ch) == 1:
- s = dump_note (ch[0])
- else:
- s = '<' + string.join (map (dump_note, ch)) + '>'
- return s
-
-# thread?
-def dump_channel (thread):
- last_e = None
- chs = []
- ch = []
-
- for e in thread:
- if last_e and last_e[0] == e[0]:
- ch.append (e[1])
- else:
- if ch:
- chs.append ((last_e[0], ch))
-
- ch = [e[1]]
-
- last_e = e
-
- if ch:
- chs.append ((last_e[0], ch))
- t = 0
- last_t = 0
-
- s = ''
- for ch in chs:
- t = ch[0]
- if t - last_t:
- s = s + dump_skip (t-last_t)
-
- s = s + dump_chord (ch[1])
- last_t = t + ch[1][0].duration
-
- return s
-
-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]
-
- on_hold.append (e)
- return s
-
-def dump_track (channels, n):
- s = ''
- track = 'track%c' % (n + ord ('A'))
- 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'
-
- s = s + '%s = \\context Staff=%s <\n' % (track, track)
-
- 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'
- return s
-
-
-def convert_midi (f):
- str = open (f).read ()
- midi_dump = midi.parse (str)
-
- tracks = []
- for t in midi_dump[1]:
- tracks.append (split_track (t))
-
- s = ''
- 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'
-
- sys.stdout.write (s)
-
-
-for f in sys.argv[1:]:
- convert_midi (f)
+ s = ''
+ 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=False)
+ r = reference_note
+ for i in notes[1:]:
+ s = s + i.dump (dump_dur=False)
+ s = s + '>'
+ s = s + notes[0].duration.dump () + ' '
+ reference_note = r
+ return s
+
+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 | %% %(bar_count)d\n ' % locals ()
+ 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_voice (thread, skip):
+ global reference_note, time
+ ref = Note (0, 4*12, 0)
+ if not reference_note:
+ reference_note = ref
+ else:
+ ref.duration = reference_note.duration
+ reference_note = ref
+ last_e = None
+ chs = []
+ ch = []
+
+ for e in thread:
+ if last_e and last_e[0] == e[0]:
+ ch.append (e[1])
+ else:
+ if ch:
+ chs.append ((last_e[0], ch))
+
+ ch = [e[1]]
+
+ last_e = e
+
+ if ch:
+ chs.append ((last_e[0], ch))
+ t = 0
+ last_t = 0
+ last_bar_t = 0
+ bar_count = 1
+
+ lines = ['']
+ for ch in chs:
+ t = ch[0]
+
+ i = lines[-1].rfind ('\n') + 1
+ if len (lines[-1][i:]) > LINE_BELL:
+ lines.append ('')
+
+ if t - last_t > 0:
+ d = t - last_t
+ if bar_max and t > time.bar_clocks () * bar_max:
+ d = time.bar_clocks () * bar_max - last_t
+ lines[-1] = lines[-1] + dump_skip (skip, d)
+ 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)
+
+ if bar_max and bar_count > bar_max:
+ break
+
+ lines[-1] = lines[-1] + s
+ lines[-1] = lines[-1] + dump_chord (ch[1])
+
+ 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
+
+ return '\n '.join (lines) + '\n'
+
+def number2ascii (i):
+ s = ''
+ i += 1
+ while i > 0:
+ m = (i - 1) % 26
+ s = '%c' % (m + ord ('A')) + s
+ i = (i - m)/26
+ return s
+
+def get_track_name (i):
+ return 'track' + number2ascii (i)
+
+def get_channel_name (i):
+ return 'channel' + number2ascii (i)
+
+def get_voice_name (i, zero_too_p=False):
+ if i or zero_too_p:
+ return 'voice' + number2ascii (i)
+ return ''
+
+def lst_append (lst, x):
+ lst.append (x)
+ return lst
+
+def get_voice_layout (average_pitch):
+ d = {}
+ for i in range (len (average_pitch)):
+ d[average_pitch[i]] = lst_append (d.get (average_pitch[i], []), i)
+ s = list (reversed (sorted (average_pitch)))
+ non_empty = len (filter (lambda x: x, s))
+ names = ['One', 'Two']
+ if non_empty > 2:
+ names = ['One', 'Three', 'Four', 'Two']
+ layout = map (lambda x: '', range (len (average_pitch)))
+ for i, n in zip (s, names):
+ if i:
+ v = d[i]
+ if type (v) == list:
+ d[i] = v[1:]
+ v = v[0]
+ layout[v] = n
+ return layout
+
+def dump_track (track, n):
+ s = '\n'
+ track_name = get_track_name (n)
+
+ average_pitch = track_average_pitch (track)
+ voices = len (filter (lambda x: x, average_pitch[1:]))
+ clef = get_best_clef (average_pitch[0])
+
+ c = 0
+ vv = 0
+ for channel in track:
+ v = 0
+ channel_name = get_channel_name (c)
+ c += 1
+ for voice in channel:
+ voice_name = get_voice_name (v)
+ voice_id = track_name + channel_name + voice_name
+ item = voice_first_item (voice)
+
+ if item and item.__class__ == Note:
+ skip = 'r'
+ if global_options.skip:
+ skip = 's'
+ s += '%(voice_id)s = ' % locals ()
+ if not global_options.absolute_pitches:
+ s += '\\relative c '
+ elif item and item.__class__ == Text:
+ skip = '" "'
+ s += '%(voice_id)s = \\lyricmode ' % locals ()
+ else:
+ skip = '\\skip '
+ s += '%(voice_id)s = ' % locals ()
+ s += '{\n'
+ if not n and not vv and global_options.key:
+ s += global_options.key.dump ()
+ if average_pitch[vv+1] and voices > 1:
+ vl = get_voice_layout (average_pitch[1:])[vv]
+ if vl:
+ s += ' \\voice' + vl + '\n'
+ else:
+ if not global_options.quiet:
+ warning (_ ('found more than 5 voices on a staff, expect bad output'))
+ s += ' ' + dump_voice (voice, skip)
+ s += '}\n\n'
+ v += 1
+ vv += 1
+
+ s += '%(track_name)s = <<\n' % locals ()
+
+ if clef.type != 2:
+ s += clef.dump () + '\n'
+
+ c = 0
+ vv = 0
+ for channel in track:
+ v = 0
+ channel_name = get_channel_name (c)
+ c += 1
+ for voice in channel:
+ voice_context_name = get_voice_name (vv, zero_too_p=True)
+ voice_name = get_voice_name (v)
+ v += 1
+ vv += 1
+ voice_id = track_name + channel_name + voice_name
+ item = voice_first_item (voice)
+ context = 'Voice'
+ if item and item.__class__ == Text:
+ context = 'Lyrics'
+ s += ' \\context %(context)s = %(voice_context_name)s \\%(voice_id)s\n' % locals ()
+ s += '>>\n\n'
+ return s
+
+def voice_first_item (voice):
+ for event in voice:
+ if (event[1].__class__ == Note
+ or (event[1].__class__ == Text
+ and event[1].type == midi.LYRIC)):
+ return event[1]
+ return None
+
+def channel_first_item (channel):
+ for voice in channel:
+ first = voice_first_item (voice)
+ if first:
+ return first
+ return None
+
+def track_first_item (track):
+ for channel in track:
+ first = channel_first_item (channel)
+ if first:
+ return first
+ return None
+
+def track_average_pitch (track):
+ i = 0
+ p = [0]
+ v = 1
+ for channel in track:
+ for voice in channel:
+ c = 0
+ p.append (0)
+ for event in voice:
+ if event[1].__class__ == Note:
+ i += 1
+ c += 1
+ p[v] += event[1].pitch
+ if c:
+ p[0] += p[v]
+ p[v] = p[v] / c
+ v += 1
+ if i:
+ p[0] = p[0] / i
+ return p
+
+def get_best_clef (average_pitch):
+ if average_pitch:
+ if average_pitch <= 3*12:
+ return Clef (0)
+ elif average_pitch <= 5*12:
+ return Clef (1)
+ elif average_pitch >= 7*12:
+ return Clef (3)
+ return Clef (2)
+
+class Staff:
+ def __init__ (self, track):
+ self.voices = track.get_voices ()
+ def dump (self, i):
+ return dump_track (self.voices, i)
+
+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
+ global time
+
+ str = open (in_file, 'rb').read ()
+ clocks_max = bar_max * clocks_per_1 * 2
+ midi_dump = midi.parse (str, clocks_max)
+
+ clocks_per_1 = midi_dump[0][1]
+ clocks_per_4 = clocks_per_1 / 4
+ time = Time (4, 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 / dur * num / den)
+
+ if global_options.verbose:
+ print 'allowed tuplet clocks:', allowed_tuplet_clocks
+
+ tracks = [create_track (t) for t in midi_dump[1]]
+ # urg, parse all global track events, such as Key first
+ # this fixes key in different voice/staff problem
+ for t in tracks:
+ t.music = t.parse ()
+ prev = None
+ staves = []
+ for t in tracks:
+ voices = t.get_voices ()
+ if ((t.name and prev and prev.name)
+ and t.name.split (':')[0] == prev.name.split (':')[0]):
+ # staves[-1].voices += voices
+ # all global track events first
+ staves[-1].voices = ([staves[-1].voices[0]]
+ + [voices[0]]
+ + staves[-1].voices[1:]
+ + voices[1:])
+ else:
+ staves.append (Staff (t))
+ prev = t
+
+ tag = '%% Lily was here -- automatically converted by %s from %s' % ( program_name, in_file)
+
+
+ s = tag
+ s += r'''
+\version "2.14.0"
+'''
+
+ s += r'''
+\layout {
+ \context {
+ \Voice
+ \remove "Note_heads_engraver"
+ \consists "Completion_heads_engraver"
+ \remove "Rest_engraver"
+ \consists "Completion_rest_engraver"
+ }
+}
+'''
+
+ for i in global_options.include_header:
+ s += '\n%% included from %(i)s\n' % locals ()
+ s += open (i).read ()
+ if s[-1] != '\n':
+ s += '\n'
+ s += '% end\n'
+
+ for i, t in enumerate (staves):
+ s += t.dump (i)
+
+ s += '\n\\score {\n <<\n'
+
+ control_track = False
+ i = 0
+ for i, staff in enumerate (staves):
+ track_name = get_track_name (i)
+ item = track_first_item (staff.voices)
+ staff_name = track_name
+ context = None
+ if not i and not item and len (staves) > 1:
+ control_track = track_name
+ continue
+ elif (item and item.__class__ == Note):
+ context = 'Staff'
+ if control_track:
+ s += ' \\context %(context)s=%(staff_name)s \\%(control_track)s\n' % locals ()
+ elif item and item.__class__ == Text:
+ context = 'Lyrics'
+ if context:
+ s += ' \\context %(context)s=%(staff_name)s \\%(track_name)s\n' % locals ()
+
+ s = s + ''' >>
+ \layout {}
+ \midi {}
+}
+'''
+
+ if not global_options.quiet:
+ progress (_ ("%s output to `%s'...") % ('LY', out_file))
+
+ if out_file == '-':
+ handle = sys.stdout
+ else:
+ handle = open (out_file, 'w')
+
+ handle.write (s)
+ handle.close ()
+
+
+def get_option_parser ():
+ p = ly.get_option_parser (usage=_ ("%s [OPTION]... FILE") % 'midi2ly',
+ description=_ ("Convert %s to LilyPond input.\n") % 'MIDI',
+ add_help_option=False)
+
+ 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 ('-D', '--debug',
+ action='store_true',
+ help=_ ('debug printing'))
+ p.add_option ('-e', '--explicit-durations',
+ action='store_true',
+ help=_ ('print explicit durations'))
+ p.add_option('-h', '--help',
+ action='help',
+ help=_ ('show this help and exit'))
+ p.add_option('-i', '--include-header',
+ help=_ ('prepend FILE to output'),
+ action='append',
+ default=[],
+ metavar=_ ('FILE'))
+ p.add_option('-k', '--key', help=_ ('set key: ALT=+sharps|-flats; MINOR=1'),
+ metavar=_ ('ALT[:MINOR]'),
+ default=None),
+ p.add_option ('-o', '--output', help=_ ('write output to FILE'),
+ metavar=_ ('FILE'),
+ action='store')
+ p.add_option ('-p', '--preview', help=_ ('preview of first 4 bars'),
+ action='store_true')
+ p.add_option ('-q', '--quiet',
+ action="store_true",
+ help=_ ("suppress progress messages and warnings about excess voices"))
+ p.add_option ('-s', '--start-quant',help= _ ('quantise note starts on DUR'),
+ metavar=_ ('DUR'))
+ p.add_option ('-S', '--skip',
+ action = "store_true",
+ help =_ ("use s instead of r for rests"))
+ 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.version = 'midi2ly (LilyPond) @TOPLEVEL_VERSION@'
+ p.add_option ('--version',
+ action='version',
+ help=_ ('show version number and exit'))
+ p.add_option ('-w', '--warranty', help=_ ('show warranty and copyright'),
+ action='store_true',)
+ p.add_option ('-x', '--text-lyrics', help=_ ('treat every text as a lyric'),
+ action='store_true')
+
+ p.add_option_group (ly.display_encode (_ ('Examples')),
+ 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 ('',
+ description=(
+ _ ('Report bugs via %s')
+ % 'http://post.gmane.org/post.php'
+ '?group=gmane.comp.gnu.lilypond.bugs') + '\n')
+ return p
+
+
+
+def do_options ():
+ opt_parser = get_option_parser ()
+ (options, args) = opt_parser.parse_args ()
+
+ if options.warranty:
+ warranty ()
+ sys.exit (0)
+
+ if not args or args[0] == '-':
+ opt_parser.print_help ()
+ ly.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 = int (options.duration_quant)
+
+ if options.key:
+ (alterations, minor) = map (int, (options.key + ':0').split (':'))[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 = int (options.start_quant)
+
+ global bar_max
+ if options.preview:
+ bar_max = 4
+
+ options.allowed_tuplets = [map (int, a.replace ('/','*').split ('*'))
+ for a in options.allowed_tuplets]
+
+ if options.verbose:
+ sys.stderr.write ('Allowed tuplets: %s\n' % `options.allowed_tuplets`)
+
+ global global_options
+ global_options = options
+
+ return args
+
+def main ():
+ files = do_options ()
+
+ exts = ['.midi', '.mid', '.MID']
+ for f in files:
+ g = f
+ for e in exts:
+ g = strip_extension (g, e)
+ if not os.path.exists (f):
+ for e in exts:
+ n = g + e
+ if os.path.exists (n):
+ f = n
+ break
+
+ if not global_options.output:
+ outdir = '.'
+ outbase = os.path.basename (g)
+ o = outbase + '-midi.ly'
+ elif (global_options.output[-1] == os.sep
+ or os.path.isdir (global_options.output)):
+ outdir = global_options.output
+ outbase = os.path.basename (g)
+ o = os.path.join (outdir, outbase + '-midi.ly')
+ else:
+ o = global_options.output
+ (outdir, outbase) = os.path.split (o)
+
+ if outdir and outdir != '.' and not os.path.exists (outdir):
+ os.mkdir (outdir, 0777)
+
+ convert_midi (f, o)
+
+if __name__ == '__main__':
+ main ()