def init_bar(b, quantiz=16):
# Note ha i seguenti campi: name, octave, velocity, channel, dynamics
dummy = Note('C-0')
dummy.velocity = 0
dummy.channel = 0
for j in xrange(quantiz):
b.place_notes(dummy, quantiz)
def play_midi(midi_path, save_path, beats, midi_vel, stop_all,midi_device_nr):
from mingus.midi import fluidsynth
from mingus.containers.note import Note
curr_path = lib.os.path.dirname(lib.os.path.abspath(__file__))
fluidsynth.init("/Users/js/Desktop/sounds/Nice-Keys-PlusSteinway-JNv2.0.sf2")
f = open(save_path + '/play_midi.csv', 'w+') # open file to save log values
f.write('time,beats,midi_note,midi_vel\n') # write first line with corresponding titles
mid = lib.mido.MidiFile(midi_path+'.mid') # save parsed MIDI file using mido library
s_times = [] # np.zeros((times[0],2)) # create an empty array to storenote events in the MIDI file
#port = lib.mido.open_output(lib.mido.get_output_names()[midi_device_nr.value]) # open port to send MIDI messages
all_time = 0 # aggregate time for all the messages
msg_count = 0 # this is to count MIDI messages with note information
all_messages = [] # create an ampty array to only store note information and their position in the score
for msg in mid: # for every message in the midi file
all_time += msg.time # the file stores midi time based on previous onset, we h
if hasattr(msg, 'note'): # checks that the MIDI message is Note
#all_time += msg.time #
all_messages.append(msg) # adds note message from MIDI file to our playback thing
s_times.append([msg_count, all_time]) # array to store note score time
msg_count += 1 # count of how many note messages there are in total
s_times = lib.np.array(s_times) # convert array to numpy.array
yo = lib.copy.deepcopy(s_times) # deepcopy the array so the original doesn't get manipulated
while True:
if len(yo) != 0: # keep running the loop until there are no more notes to play
#print 'here'
if yo[0, 1] < beats.value: # if the playhead is larger than the first note in the array play the first note and then delete
msgMIDI = all_messages[int(yo[0, 0])] # add note information and it's timing to the midi message to be sent
if midi_vel.value > 127:
msgMIDI.velocity = 127
else:
msgMIDI.velocity = midi_vel.value # add velocity to the MIDI message to be sent
f.write( # store values for later analysis
"%f, %f, %f, %f\n" % (lib.time.time(), beats.value, all_messages[int(yo[0, 0])].note, midi_vel.value))
msgMIDI.channel = 0
note = Note(all_messages[int(yo[0, 0])].note-12)
print note
note.velocity = msgMIDI.velocity
if msgMIDI.type == 'note_on':
fluidsynth.play_Note(note)
if msgMIDI.type == 'note_off':
fluidsynth.stop_Note(note)
#port.send(msgMIDI) # send the message using predefined port (midi device)
yo = lib.np.delete(yo, 0, 0) # once the note has been played delete the first message
#print beats.value/2
else: # if there are no more notes to play
f.close # stop storing the values in csv
stop_all.value = True # flag to indicate to the rest of the system that the file has finished.
print 'MIDI Playback Finished' # print for use rto acknowledge
break
def gen(self, midifilename):
dummy = Note('C-0')
dummy.velocity = 0
dummy.channel = 9
dummy.duration = self.dur
for nb in xrange( self.n_bars ):
b = Bar('C', (4,4))
# note "dummy" posizionate su una "griglia di quantizzazione"
for i in xrange(self.nsteps):
b.place_notes(dummy, self.dur)
# print repr(b) # debug
# note "vere"
for x in self.STRMAP.keys():
ys = self.STRMAP[x]
y = self.DRMAP[x]
if len(ys) > 0:
if len(self.VARMAP[x]) > 0:
var = self.VARMAP[x][nb]
else:
var = 0
if self.vartype == self._OR_VAR_: # or = variazione aggiunge !? xor = toggle
tmps = or_str( ys, gen_bin_str(self.nsteps, var) )
elif self.vartype == self._XOR_VAR_:
tmps = xor_str( ys, gen_bin_str(self.nsteps, var) )
else:
tmps = ys # no var.
bin_to_bar(b, y, tmps, self.dur)
# cleanup - tolgo le note "dummy"
for x in b.bar :
x[2].remove_note('C', 0)
# print repr(b) # debug
self.tk + b
# "dummy bar"
db = Bar('C', (4,4))
db.place_notes(dummy,1)
self.tk + db
comp = Composition()
comp + self.tk
write_Composition(midifilename, comp, self.tempo)
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
c = Composition()
bpm = 120
if header[2]['fps']:
print "Don't know how to parse this yet"
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track in track_data:
t = Track()
b = Bar()
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
meter = (4, 4)
key = 'C'
for e in track:
(deltatime, event) = e
duration = float(deltatime) / (ticks_per_beat * 4.0)
if duration != 0.0:
duration = 1.0 / duration
if len(b.bar) > 0:
current_length = b.bar[-1][1]
b.bar[-1][1] = duration
if current_length - duration != 0:
b.current_beat -= 1.0 / current_length
b.current_beat += 1.0 / duration
if not b.place_notes(NoteContainer(), duration):
t + b
b = Bar(key, meter)
b.place_notes(NoteContainer(), duration)
if event['event'] == 8:
if deltatime == 0:
pass
elif event['event'] == 9:
# note on
n = Note(notes.int_to_note(event['param1'] % 12),
event['param1'] / 12 - 1)
n.channel = event['channel']
n.velocity = event['param2']
if len(b.bar) > 0:
b.bar[-1][2] + n
else:
b + n
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
i = MidiInstrument()
i.instrument_nr = event['param1']
t.instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
t.name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo warning Only the last change in bpm will get
# saved currently
mpqn = self.bytes_to_int(event['data'])
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = self.bytes_to_int(d[3])
metronome = self.bytes_to_int(d[2]) / 24.0
denom = 2**self.bytes_to_int(d[1])
numer = self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = self.bytes_to_int(d[0])
minor = self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in xrange(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print 'Unsupported META event', event['meta_event']
else:
print 'Unsupported MIDI event', event
t + b
c.tracks.append(t)
return (c, bpm)
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
c = Composition()
if header[2]['fps']:
print "Don't know how to parse this yet"
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track in track_data:
t = Track()
b = Bar()
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
meter = (4, 4)
key = 'C'
for e in track:
(deltatime, event) = e
duration = float(deltatime) / (ticks_per_beat * 4.0)
if duration != 0.0:
duration = 1.0 / duration
if deltatime != 0:
if not b.place_notes(NoteContainer(), duration):
t + b
b = Bar(key, meter)
b.place_notes(NoteContainer(), duration)
if event['event'] == 8:
if deltatime == 0:
pass
elif event['event'] == 9:
# note on
n = Note(notes.int_to_note(event['param1'] % 12),
event['param1'] / 12 - 1)
n.channel = event['channel']
n.velocity = event['param2']
if len(b.bar) > 0:
b.bar[-1][2] + n
else:
b + n
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
i = MidiInstrument()
i.instrument_nr = event['param1']
t.instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
t.name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo warning Only the last change in bpm will get
# saved currently
mpqn = self.bytes_to_int(event['data'])
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = self.bytes_to_int(d[3])
metronome = self.bytes_to_int(d[2]) / 24.0
denom = 2 ** self.bytes_to_int(d[1])
numer = self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = self.bytes_to_int(d[0])
minor = self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in xrange(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print 'Unsupported META event', event['meta_event']
else:
print 'Unsupported MIDI event', event
t + b
c.tracks.append(t)
return (c, bpm)
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
# print('MIDI_to_Composition:', track_data[1])
# print('===')
# print(track_data[2])
# for j in track_data[2]:
# if j[1]['event'] == 9 or j[1]['event'] == 8:
# print('MIDI_to_Composition:', j[0], j[1]['event'], Note(notes.int_to_note(j[1]['param1'] % 12)))
c = Composition()
if header[2]['fps']:
print("Don't know how to parse this yet")
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track_idx, track in enumerate(track_data):
t = Track()
b = Bar()
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
meter = (4, 4)
key = 'C'
NOTE_ON_counter = 0
for event_idx, e in enumerate(track):
(deltatime, event) = e
duration = float(deltatime) / (ticks_per_beat * 4.0)
if NOTE_ON_counter == 0 and duration != 0 and event['event'] == 9: # then we need to add a rest before playing
b.place_rest(1.0/duration)
NOTE_ON_counter += 1
# this logic is nice and clear...
if duration != 0.0:
duration = 1.0 / duration
if len(b.bar) > 0:
current_length = b.bar[-1][1]
b.bar[-1][1] = duration
if current_length - duration != 0:
b.current_beat -= 1.0 / current_length
b.current_beat += 1.0 / duration
if not b.place_notes(NoteContainer(), duration):
t + b
b = Bar(key, meter)
b.place_notes(NoteContainer(), duration)
if event['event'] == 8:
if deltatime == 0:
pass
elif event['event'] == 9:
# note on
n = Note(notes.int_to_note(event['param1'] % 12),
np.floor(event['param1'] / 12)) # this was event['param1']/12 - 1 but that gives skewed, incorrect octaves
n.channel = event['channel']
n.velocity = event['param2']
if len(b.bar) > 0:
b.bar[-1][2] + n
else:
b + n
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
i = MidiInstrument()
i.instrument_nr = event['param1']
t.instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
t.name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo warning Only the last change in bpm will get
# saved currently
mpqn = self.bytes_to_int(event['data'])
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = d[3] #self.bytes_to_int(d[3])
metronome = d[2]//24.0 #self.bytes_to_int(d[2]) / 24.0
denom = 2**d[1] #2 ** self.bytes_to_int(d[1])
numer = d[0]#self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = d[0] #self.bytes_to_int(d[0])
minor = d[0] #self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in range(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print('Unsupported META event', event['meta_event'])
else:
print('Unsupported MIDI event', event)
t + b
c.tracks.append(t)
return (c, bpm)
