def __repr__ (self):
return 'Text(%d=%s)' % (self.type, self.text)
-def get_voice (channel, events):
+def get_voice (channel, music):
debug ('channel: ' + str (channel) + '\n')
- music = parse_events (events)
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)
- return self
def get_voice (self):
- return get_voice (self.number, self.events)
+ 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)):
+ 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])
+ 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:
+class Track (Channel):
def __init__ (self):
+ Channel.__init__ (self, None)
self.name = None
- self.events = []
self.channels = {}
def _add (self, event):
- if isinstance (event, Text) and event.type == midi.SEQUENCE_TRACK_NAME:
- self.name = event.text
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)).add (event)
self.channels[channel] = self.channels.get (channel, Channel (channel))
self.channels[channel].add (event)
- def get_voice (self):
- return get_voice (None, self.events)
def get_voices (self):
return ([self.get_voice ()]
+ [self.channels[k].get_voice ()
for k in sorted (self.channels.keys ())])
-def parse_track (events):
+def create_track (events):
track = Track ()
for e in events:
data = list (e[1])
except KeyError:
pass
-def parse_events (channel):
- pitches = {}
-
- notes = []
- events = []
- last_lyric = 0
- last_time = 0
- for e in channel:
- 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
- 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)
- if not t and global_options.key:
- # At t == 0, a set --key overrides us
- k = global_options.key
- events.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)):
- 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
-
- 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 = []
while channel:
if global_options.verbose:
print 'allowed tuplet clocks:', allowed_tuplet_clocks
- staves = [Staff (parse_track (t)) for t in midi_dump[1]]
+ tracks = [create_track (t) for t in midi_dump[1]]
+ 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
+ else:
+ staves.append (Staff (t))
+ prev = t
tag = '%% Lily was here -- automatically converted by %s from %s' % ( program_name, in_file)
projects / lilypond.git / commitdiff