def testIsEmptyTrack():
pat1 = midi.read_midifile('tests/trk15empty.mid')
assert(isEmptyTrack(15,pat1) == True)
pat2 = midi.read_midifile('tests/empty.mid')
assert(isEmptyTrack(0,pat2) == True)
pat3 = midi.read_midifile('tests/notEmpty.mid')
assert(isEmptyTrack(1,pat3)== False)
def id_pattern_itter(db):
for record in db["records"]:
record = db["records"][record]
yield (record["id"], midi.read_midifile(StringIO.StringIO(record["data"])))
for bar in record["bars"]:
yield(bar["id"],midi.read_midifile(StringIO.StringIO(bar["data"])))
for track in record["bars"]:
yield(track["id"],midi.read_midifile(StringIO.StringIO(track["data"])))
for bar_track in record["bars_tracks"]:
yield(bar_track["id"],midi.read_midifile(StringIO.StringIO(bar_track["data"])))
def test_mary(self):
midi.write_midifile("mary.mid", mary_test.MARY_MIDI)
pattern1 = midi.read_midifile("mary.mid")
midi.write_midifile("mary.mid", pattern1)
pattern2 = midi.read_midifile("mary.mid")
self.assertEqual(len(pattern1), len(pattern2))
for track_idx in range(len(pattern1)):
self.assertEqual(len(pattern1[track_idx]), len(pattern2[track_idx]))
for event_idx in range(len(pattern1[track_idx])):
event1 = pattern1[track_idx][event_idx]
event2 = pattern1[track_idx][event_idx]
self.assertEqual(event1.tick, event2.tick)
self.assertEqual(event1.data, event2.data)
def main():
usage = "%prog <seq-id> <midi-file> [<midi-file> ...]"
parser = OptionParser(usage=usage)
parser.add_option("--names", dest="names", action="store", help="read in a NAMES file from the midi auto-collection, intead of reading midi files from the command line")
options, arguments = parser.parse_args()
if options.names is not None:
print "Reading names from %s" % options.names
csv = UnicodeCsvReader(open(options.names))
filenames = []
dirname = os.path.dirname(options.names)
csv.next()
for row in csv:
filename = os.path.join(dirname,row[0])
if not os.path.exists(filename):
continue
seq = ChordSequence.objects.get(id=int(row[2]))
filenames.append((seq,filename))
else:
if len(arguments) < 2:
print >>sys.stderr, "Specify a sequence id and one or more midi files"
sys.exit(1)
seq_id = int(arguments[0])
seq = ChordSequence.objects.get(id=seq_id)
filenames = [(seq,fn) for fn in arguments[1:]]
if len(filename) == 0:
print sys.stderr, "No input files"
sys.exit()
files = []
for seq,filename in filenames:
print "Reading %s" % filename
f = open(filename, 'r')
data = f.read()
# Try reading in the midi data to check it's ok
read_midifile(StringIO(data))
files.append((seq, os.path.basename(filename), ContentFile(data)))
for seq, filename,f in files:
print "Storing %s" % filename
# Create a new midi data record in the database
midi = MidiData()
midi.sequence = seq
midi.save()
# Use the original filename
midi.midi_file.save(filename, f)
midi.save()
def main():
#pattern1 = midi.read_midifile("midi/5RAP_04.MID")
bars = []
pattern = midi.read_midifile("midi/5RAP_04.MID")
#pattern = midi.read_midifile("midi/decoy.mid")
#pattern = midi.read_midifile("midi/drum_patterns.mid")
#print_events(pattern, [])
pattern = sanitize(pattern)
midi.write_midifile("test.mid", pattern)
pattern = midi.read_midifile("test.mid")
print pattern
return
def testcreateTune(self):
# --- tests if MIDI files are successfully converted to a Tune object ---
# import midi file: C major scale with all quarter notes (refer to TestComputePitches)
# Use Python MIDI library https://github.com/vishnubob/python-midi
# MIDI files are an array of integers with a header
TuneMIDI = midi.read_midifile("../tests/MIDITestFiles/c-major-scale-treble.mid")
# ---- Fail Tune Parameter Constraints ---
self.assertFalse(Tune("wrongFileType.txt"), Clef.TREBLE, "", [""])
# timeSignature has to be (int, int) where int > 0
self.assertFalse(Tune(TuneMIDI), (-1, 0), Clef.BASS, "Title", ["Contributor"])
self.assertFalse(Tune(TuneMIDI, (2.5, 3), Clef.BASS, "Title", ["Contributor"]))
tune = Tune(TuneMIDI, (3,4), Clef.TREBLE, "Title", ["Contributor"])
# --- test Tune setters and getters ---
# If bad input, leave field unchanged
tune.setTimeSignature((4,4))
self.assertEqual(tune.getTimeSignature(), (4,4))
tune.setTimeSignature((-1, 0))
self.assertEqual(tune.getTimeSignature(), (4,4))
tune.setTitle("new title")
self.assertEqual(tune.getTitle(), "new title")
tune.setTitle("this is toooooooooooooooooooooooooooooooooooooooooooo long title")
self.assertEqual(tune.getTitle(), "new title")
tune.setContributors(["person1, person2, person3"])
self.assertEqual(tune.getContributors(), ["person1, person2, person3"])
tune.setContributors(["this is tooooooooooooooooooooooooooooooooo long contributor name"])
self.assertEqual(tune.getContributors(), ["person1, person2, person3"])
frequencies = [261.63, 293.66, 329.63]
# check frequencies and onsets calculated correctly from generateTune
for i in xrange(0, 3):
self.assertEqual(tune[i].getFrequency(), frequencies[i])
self.assertEqual(tune[i].getOnset(), i)
self.assertTrue(samerest.noteEqual(samerestNote))
def load_midi_file(self, file_location):
midi_file = midi.read_midifile(file_location)
midi_file.reverse()
midi_file.make_ticks_abs()
resolution = midi_file.resolution
song_info_track = midi_file.pop()
has_tempo_event = False
mpqn = 0 # milliseconds per quarter note
for event in song_info_track:
if type(event) is midi.SetTempoEvent:
has_tempo_event = True
mpqn = (event.data[0] << 16) | (event.data[1] << 8) | event.data[2]
# print "mpqn is&: ", mpqn
if mpqn == 0:
mpqn = 1
current_tempo_in_beats_per_minute = 120
if has_tempo_event:
current_tempo_in_beats_per_minute = 60000000.0/mpqn
self.bpm = current_tempo_in_beats_per_minute
self.ms_per_tick = resolution * (current_tempo_in_beats_per_minute / 60.0)
self.ms_per_tick = 1000.0/self.ms_per_tick
self.song_buffer = SongBuffer(time_per_tick=self.ms_per_tick)
# print self.ms_per_tick
for track in midi_file:
self.song_buffer.add_track(track)
def get_tracknames():
filenames = []
count = 0
for root, subFolders, files in os.walk('.'):
count +=1
if count == 9:
break
files = [os.path.join(root, filename) for filename in files if filename.lower().endswith(".mid")]
filenames += files
filenames = filenames[:100]
tracknames = []
for filename in filenames:
print "processing", filename
try:
pattern = midi.read_midifile(filename)
current_tracknames = midiutil.get_track_names(pattern)
current_tracknames = [trackname.rstrip().lstrip().lower().encode('ascii', 'ignore') for trackname in current_tracknames]
#current_tracknames = [trackname for trackname in tracknames if trackname != ""]
tracknames += current_tracknames
except:
print " bad file", filename
tracknames = [' '.join(ch for ch in t if ch.isalnum()) for t in tracknames if t != '']
print tracknames
return tracknames
def Main():
#these values should match what is in SongData
#and are here just for reference
#REST = 128
#HOLD = 129
#NULL = 130
#END = 131
#BEATS_PER_BAR = 32
#extract features
absolute_pos = 0
folder = os.path.join('downloads','midiworld')
pitches = set()
songs = []
observedstates = set()
featurevectors = []
import csv
with open('features.csv','wb') as out:
try:
print('finding valid songs')
csv_out=csv.writer(out)
valid_filenames = []
for filename in os.listdir(folder):
out_of_range = False
song_path = os.path.join(folder, filename)
pattern = midi.read_midifile(song_path)
song = SongData(pattern, filename)
for action in song.eventset:
if (action > 84 and action < 128) or action < 48:
out_of_range = True
if song.startstate.pitch == 131:
out_of_range = True
if not out_of_range:
valid_filenames.append(song.filename)
print(len(valid_filenames))
pdump(valid_filenames, 'valid_filenames.pkl',noPrefix=True)
def process_file(midi_file):
"""
Read a midi file, creates data structures suitable writing, and finally
writes the TXT output.
"""
inpath, infullname = os.path.split(midi_file)
inname, inext = os.path.splitext(infullname)
outputfile = os.path.join(OUTPUT_DIR, inname + ".txt")
if not inext.lower() in (".mid", ".midi"):
print "Skipping " + midi_file
return
print "Processing " + midi_file
mf = midi.read_midifile(midi_file)
ppq = mf.resolution # ticks per quarter note
# process the tracks according to the file format
file_data = FILE_FORMAT_MAP[mf.format](mf)
# get the tick period
# FIXME: this assumes fixed tempo throughout the file.
seconds_per_tick = 60.0 / file_data['params'].bpm / ppq
if USE_TIME_IN_SECONDS:
for event in file_data['on_events']:
event[0] = seconds_per_tick * event[0]
for event in file_data['off_events']:
event[0] = seconds_per_tick * event[0]
write_output_file(outputfile, file_data)
def load(self, filename):
'''Load MIDI file'''
pattern = midi.read_midifile(filename)
self.resolution = pattern.resolution
pattern.make_ticks_abs()
events = []
for track in pattern:
for event in track:
events.append(event)
events.sort()
cues = []
for e in events:
if type(e) == midi.events.TextMetaEvent:
if e.text.startswith('cue'):
cues.append(e.tick)
self.cues = cues
self.events = events
self.eventnum = 0
self.tempo = 120.0
self.time = 0
self._playing = False
self.softReset()
while self.eventnum < len(self.events) and self.events[self.eventnum].tick < 2:
event = self.events[self.eventnum]
self.eventnum += 1
self.do_event(event)
def openOptions(): #Options window UI
top=Toplevel()
Label(top, text="Chain Length: ").grid(row=0)
Label(top, text="Instrument: ").grid(row=1)
Label(top, text="Song Length: ").grid(row=2)
Label(top, text="Tempo: ").grid(row=3)
Label(top, text="Input Track: ").grid(row=4)
lengths=range(2,10) #possible chain lengths
c.d.chainLengthPicker=apply(OptionMenu,(top,c.d.chainLength)+tuple(lengths))
c.d.chainLengthPicker.grid(row=0,column=1)
instruments=c.d.instruments.keys()
c.d.instrumentPicker=OptionMenu(top,c.d.instrumentName,*instruments,\
command=setInstrument)
c.d.instrumentPicker.grid(row=1,column=1)
c.d.songLengthPicker=Entry(top,textvariable=c.d.songLength,\
validatecommand=validateLength)
c.d.songLengthPicker.grid(row=2,column=1)
c.d.tempoPicker=Entry(top,textvariable=c.d.tempo,\
validatecommand=validateTempo)
c.d.tempoPicker.grid(row=3,column=1)
tracks=[1] #default track
if(c.d.inputFile.get() !=''):
pat=midi.read_midifile(c.d.inputFile.get())
tracks=range(len(pat))
c.d.trackPicker=apply(OptionMenu,(top,c.d.track)+tuple(tracks))
c.d.trackPicker.grid(row=4,column=1)
def parseMidi(filename):
#Reads midi events from file
stream = midi.read_midifile(filename)
songName=""
trackName=""
tempo=75
#Get info for track 0 (Song name and master tempo)
for event in stream.get_track_by_number(0):
if (event.name=="Track Name"):
songName=event.data
tempo=stream.get_tempo().tempo
print "Song Name: "+songName+", tempo: "+str(tempo)
#Get info for other tracks
tracklist=sorted(stream.tracknames.items(), key=lambda trk: trk[1])
num=0
if not(len(tracklist)==0):
#If there are more than one track in the file, you have to choose one
for track in tracklist:
if not(track[1]==0): print str(track[1])+") "+track[0]
#Select a track to analize
ok=0
while not(ok):
select=raw_input("Please insert track number you want to analyze [1.."+str(tracklist[-1][1])+"]: ")
try:
num=int(select)
if (num>=1 and num<=tracklist[-1][1]):
ok=1
else:
print "Number out of range"
except ValueError:
print "Invalid input"
try:
trackName=tracklist[num][0]
except IndexError:
print "Failed to get track name"
if (songName==""): songName=filename.name.split(".")[0]
if (trackName==""): trackName=songName
print "scanning track "+trackName+"..."
noteList=[]
for event in stream.get_track_by_number(num):
if (event.name=="Note On"):
noteList.append(event)
if (VERBOSE):
print event
if (event.name=="Note Off"):
#Convert note off event in note on with velocity=0
event.name="Note On"
event.velocity=0
noteList.append(event)
if (VERBOSE):
print event
return (noteList, songName, trackName, tempo)
def get_notes():
# downloaded from http://www.piano-midi.de/muss.htm
filename = 'muss_1.mid'
m = midi.read_midifile(filename)
m.make_ticks_abs()
tick = 120.0
notes = np.array([(n.pitch, int(round(n.tick / tick)))
for n in m[1]
if type(n) == midi.events.NoteOnEvent
and n.velocity > 0
and n.pitch > 0])
note_map = collections.defaultdict(list)
max_pitch = 0
min_pitch = 127
for pitch, t in notes:
note_map[t].append(pitch)
if pitch > max_pitch:
max_pitch = pitch
elif pitch < min_pitch:
min_pitch = pitch
max_time = max(note_map.keys())
output_units = max_pitch - min_pitch + 1
output = np.zeros((max_time, output_units))
for t in range(max_time):
if t in note_map:
for i in note_map[t]:
output[t, i - min_pitch] = 1
return output, min_pitch
def to_int_array(file_location):
pattern = midi.read_midifile(file_location)
return [
event.data[0] for track in pattern for event in track
if isinstance(event, midi.NoteOnEvent) and event.data[1] > 0
]
def create_record(filename, include_data = False):
print "Creating record", filename
record = {}
record["id"] = generate_id(open(filename, "rb"))
record["filename"] = filename
try:
pattern = midi.read_midifile(filename)
except:
print "Error"
return None
if include_data:
record["data"] = midiutil.midi_to_data(pattern)
record["time_signature"] = midiutil.get_time_signature(pattern)
record["tempo"] = midiutil.get_tempo(pattern)
record["track_names"] = midiutil.get_track_names(pattern)
record["resolution"] = pattern.resolution
record["note_distribution"] = midiutil.get_note_distribution(pattern,[9])
record["key"] = midiutil.guess_key(pattern, record["note_distribution"])
record["scale"] = midiutil.guess_scale(record["key"], record["note_distribution"])
#for track in pattern:
# print midiutil.get_track_name(track)
# dist = midiutil.get_note_distribution(track, [], False)
# plt.bar(range(len(dist)), dist.values(), align="center")
# plt.xticks(range(len(dist)), dist.keys())
# plt.show()
# dist = record["note_distribution"]
return record
def main():
usage = "%prog [options] <in-file>"
description = "Print out stats about the notes in a MIDI file"
parser = OptionParser(usage=usage, description=description)
parser.add_option('-k', '--key-profile', dest="key_profile", action="store", type="int", help="output a graph of the key profile for the given key as a gnuplot script")
options, arguments = parse_args_with_config(parser)
if len(arguments) == 0:
print "No input MIDI file given"
sys.exit(1)
filename = arguments[0]
# Load the midi file
midi = read_midifile(filename)
print "Midi file type %d" % midi.format
print "Resolution: %d" % midi.resolution
print "%d notes" % len(note_ons(midi))
# Get rid of drums
midi = simplify(midi, remove_drums=True)
notes = note_ons(midi)
print "%d non-drum notes" % len(notes)
# Analyse the note content
pcs = dict([(i,0) for i in range(12)])
for note in notes:
pcs[note.pitch % 12] += 1
note_names = dict([
(0, "C"), (1, "C#"), (2, "D"), (3, "D#"), (4, "E"), (5, "F"),
(6, "F#"), (7, "G"), (8, "G#"), (9, "A"), (10, "A#"), (11, "B") ])
# Print the notes
for pc, count in reversed(sorted(pcs.items(), key=lambda x:x[1])):
print "%s: %d" % (note_names[pc], count)
if options.key_profile is not None:
kp_output_file = "key_profile"
pc_names = ["1", "#1/b2", "2", "#2/b3", "3", "4", "#4/b5", "5",
"#5/b6", "6", "#6/b7", "7"]
# Output the pitch counts
key = options.key_profile
# Get the pc frequencies
pc_freq = [float(pcs[(key+p)%12])/sum(pcs.values()) for p in range(12)]
# Output them to a CSV
data = "\n".join("%d\t%s\t%f" % (i,name,freq) for (name,freq,i) in zip(pc_names,pc_freq,range(12)))
with open("%s.csv" % kp_output_file, 'w') as f:
f.write(data)
# Output the Gnuplot script
gnuplot = """\
set style data lines
set nokey
set xrange [-1:13]
set terminal pdf monochrome
set output "key_profile.pdf"
set xlabel "Pitch class"
plot "key_profile.csv" using 1:3:xticlabel(2)
"""
with open("%s.p" % kp_output_file, 'w') as f:
f.write(gnuplot)
# Run Gnuplot
call(["gnuplot", "%s.p" % kp_output_file])
print "Gnuplot plot output to %s.p and %s.pdf" % (kp_output_file,kp_output_file)
def readSongDoubleNote():
pattern = midi.read_midifile(sys.argv[2])
notes = ["C","C#","D","D#","E","F","F#","G","G#","A","A#","B"]
tab = []
i=1
end = len(pattern)
off = 0
while i<end:
j=0
fin = len(pattern[i])
while j < fin:
if type(pattern[i][j]) == midi.events.NoteOnEvent:
num = pattern[i][j].data[0]
octave = int(floor(num/12))
#print type(octave)
note = notes[num - octave*12]
if pattern[i][j].tick+off != 0 or len(tab) == 0:
tab.append([octave,note,pattern[i][j].tick+off])
else :
tab[-1].append([octave,note,0])
off = 0
if type(pattern[i][j]) == midi.events.NoteOffEvent:
off = pattern[i][j].tick
j = j+1
i = i+1
return tab
def read_midi_file(midi_path, channel=9, quantisation_level=1/16):
midi_file = midi.read_midifile(midi_path)
# Find the drum tracks
drum_tracks = set()
for index, track in midi_file.tracklist.iteritems():
for event in track:
if isinstance(event, midi.NoteEvent) and event.channel == 9:
drum_tracks.add(index)
break
# tick beat^-1 = (tick quart^-1 * quart note^-1) / note beat^-1
tpb = 4 * midi_file.resolution * quantisation_level
beats = {}
for track_index in drum_tracks:
midi_track = midi_file.tracklist[track_index]
for event in midi_track:
if isinstance(event, midi.NoteOnEvent) and event.channel == channel:
beat_index = int(round(event.tick / tpb))
if beat_index not in beats:
beats[beat_index] = set()
beats[beat_index].add(event.pitch)
if beats:
track = [frozenset() for _ in xrange(max(beats) + 1)]
for beat_index, beat in beats.iteritems():
track[beat_index] = frozenset(beat)
return tuple(track)
def computeOnset(myfile): pattern = midi.read_midifile(myfile) NotesList = [] index = 0 bpm = 0 resolution = pattern.resolution duration = 0; pattern.make_ticks_abs() # changes ticks to cumulative values print pattern for track in pattern: for event in track: if isinstance(event, midi.SetTempoEvent): bpm = event.bpm if isinstance(event, midi.NoteEvent): if (isinstance(event, midi.NoteOffEvent) or (isinstance(event, midi.NoteOnEvent) and event.data[1] == 0)): endset = ticksToTime(event.tick, bpm, resolution) currNote = NotesList[index] duration = endset - currNote.onset currNote.duration = secondsToDuration(duration) index += 1 else: onset = ticksToTime(event.tick, bpm, resolution) newNote = Note(onset = onset) NotesList.append(newNote) return NotesList
def time_series_list_builder(filename_io_mid):
'''
INPUT: STR : The name of MIDI file 'bwv733_io.mid' extracted out of Ableton into typically 3 separate
MIDI files 'bwv733_t1.mid', 'bwv733_t2.mid', 'bwv733_t3.mid'
and merged with merger_t1s('bwv733.mid')
OUTPUT: time_series LIST [(time INT, pitch INT, duration INT), ...]: time-sorted
'''
tracks = midi.read_midifile(filename_io_mid)
note_on = [0 for i in tracks]
note_off = [0 for i in tracks]
time_series_list = []
for i, track in enumerate(tracks):
note_on[i], note_off[i] = extract_melody(track)
if len(note_on[i]) != len(note_off[i]):
print '''len(note_on)={} and len(note_off)={} @track={}'''\
.format(len(note_on[i]), len(note_off[i]), i)
out = time_series_builder(note_on[i], note_off[i])
if len (out) > 0:
time_series_list.append(out)
return time_series_list
def notes_from_file(filename: str) -> List[Note]:
midifile_rel = midi.read_midifile(filename)
midifile_abs = copy.deepcopy(midifile_rel)
midifile_abs.make_ticks_abs()
# Convert MIDI events to our music representation: a list of Note objects
notes = []
active_notes = {}
for ev_rel, ev_abs in zip(midifile_rel[-1], midifile_abs[-1]):
if isinstance(ev_rel, midi.NoteOnEvent) and ev_rel.data[1]:
n = Note()
n.resolution = midifile_rel.resolution
n.tick_abs = ev_abs.tick
n.pitch = ev_rel.data[0]
n.velocity = ev_rel.data[1]
if n.pitch not in active_notes:
active_notes[n.pitch] = {n}
else:
active_notes[n.pitch].add(n)
elif isinstance(ev_rel, midi.NoteOffEvent) or (isinstance(ev_rel, midi.NoteOnEvent) and ev_rel.data[1] == 0):
n = active_notes[ev_rel.data[0]].pop()
n.duration = ev_abs.tick - n.tick_abs
notes.append(n)
assert not any(active_notes.values()), "Some notes were not released"
return sorted(notes, key=lambda note: note.tick_abs)
def parseMidiFile(self, filename): #self.output = [] #numpy.zeros(5) pattern = midi.read_midifile(filename) self.ppq = pattern.resolution for track in pattern: #print track self.tracks.append([]) #add a new empty track for event in track: #print repr(event) if type(event) is midi.events.SetTempoEvent: self.bpm = event.get_bpm() #change tempo if type(event) is midi.events.NoteOnEvent: self.generateAudio(event.tick, event.channel) note = event.pitch self.noteActive[note] = True elif type(event) is midi.events.NoteOffEvent: self.generateAudio(event.tick, event.channel) note = event.pitch self.noteActive[note] = False self.tracks.pop() #removes the extra added track (the first track is just metadata) track_len = min([len(track) for track in self.tracks]) self.tracks = [track[0:track_len] for track in self.tracks] #trim all tracks to the exact same size self.output[0] = numpy.sum(self.tracks, axis=0) #combine tracks return self.output
def midi_matrix(filename, min_pitch=36, max_pitch=120):
pattern = midi.read_midifile(filename)
resolution = pattern.resolution
tempo = 120 # arbitrary default bpm
max_tick = max([sum(map(lambda e: e.tick, track)) for track in pattern])
## max_pitch should be there as last one ==> +1
matrix = np.zeros((1 + max_pitch - min_pitch, max_tick))
for track in pattern:
last_event_when = 0 # in ticks
currently_played_notes = set()
for event in track:
if isinstance(event, midi.SetTempoEvent):
tempo = event.get_bpm()
continue
if isinstance(event, midi.NoteOnEvent) or isinstance(event, midi.NoteOffEvent):
# what happened in-between
for note in currently_played_notes:
for tick in range(last_event_when, last_event_when + event.tick):
matrix[note - min_pitch][tick] = 1
last_event_when += event.tick
# the case of a noteOffEvent
if event.get_velocity() == 0:
currently_played_notes.discard(event.get_pitch())
else:
# the case of a noteOnEvent
currently_played_notes.add(event.get_pitch())
return matrix
def test(ifile):
ticks_so_far = 0
pattern = midi.read_midifile(ifile)
metadata = pattern[0]
melody = pattern[1]
piano = pattern[2]
bassline = pattern[3]
key_code = -1
beats_per_measure = -1
ticks_per_measure = -1
# extract time and key signature
for el in metadata:
if type(el) is midi.KeySignatureEvent:
key_code = el.data[0]
elif type(el) is midi.TimeSignatureEvent:
beats_per_measure = el.data[0]
ticks_per_measure = pattern.resolution * beats_per_measure
if key_code == -1 or beats_per_measure == -1:
sys.exit("No time or key signature: " + input_file)
key = get_key(key_code)
chord_progression = get_chord_progression(bassline, piano, ticks_per_measure, key)
# for c in chord_progression:
# print c
# for n in notes:
# print n.pitch
measures = get_measures(melody, ticks_per_measure)
def midiToNoteStateMatrix(midifile, lowerbound=21, upperbound=109):
# code from: https://github.com/hexahedria/biaxial-rnn-music-composition/
pattern = midi.read_midifile(midifile)
timeleft = [track[0].tick for track in pattern]
posns = [0 for track in pattern]
statematrix = []
span = upperbound - lowerbound
time = 0
state = [[0,0] for x in range(span)]
statematrix.append(state)
while True:
if time % (pattern.resolution / 4) == (pattern.resolution / 8):
# Crossed a note boundary. Create a new state, defaulting to holding notes
oldstate = state
state = [[oldstate[x][0],0] for x in range(span)]
statematrix.append(state)
for i in range(len(timeleft)):
while timeleft[i] == 0:
track = pattern[i]
pos = posns[i]
evt = track[pos]
if isinstance(evt, midi.NoteEvent):
if (evt.pitch < lowerbound) or (evt.pitch >= upperbound):
pass
# print "Note {} at time {} out of bounds (ignoring)".format(evt.pitch, time)
else:
if isinstance(evt, midi.NoteOffEvent) or evt.velocity == 0:
state[evt.pitch - lowerbound] = [0, 0]
else:
state[evt.pitch - lowerbound] = [1, 1]
elif isinstance(evt, midi.TimeSignatureEvent):
if evt.numerator not in (2, 4):
# We don't want to worry about non-4 time signatures. Bail early!
#print("Found non even time signature event. Bailing early!".format(evt))
return statematrix
try:
timeleft[i] = track[pos + 1].tick
posns[i] += 1
except IndexError:
timeleft[i] = None
if timeleft[i] is not None:
timeleft[i] -= 1
if all(t is None for t in timeleft):
break
time += 1
return statematrix
def note_lists_for_file(filename, absolute=False):
retval = []
pattern = midi.read_midifile(filename)
for track in pattern:
l = midi_to_note_list(track, absolute)
if len(l):
retval.append(l)
return retval
def __init__(self, file_path):
self.pattern = midi.read_midifile(file_path)
# store pitch and tick into tuple in vector
self.data_vector = [(self.pattern[1][i].pitch, self.pattern[1][i].tick)
for i in range(len(self.pattern[1])-1)]
self.backup_vector = self.data_vector
self.is_notes_repr = False
self.is_midi_repr = True
def generate(chainLength,length,filename,outputPath,tracknum,instrument,tempo):
markovSource = 'notes.txt'
pattern = midi.read_midifile(filename)
track = pattern[tracknum]
outputNotes(track,markovSource)
noteList = generateMusic(markovSource,length,chainLength).split()
generateMidi(noteList,outputPath,instrument,tempo)
print 'Song Generated'
def tranverse_all_folders(folder_trans):
j = 0
for path in os.listdir(folder_trans):
pattern = midi.read_midifile(folder_trans + slash + path)
print folder_trans + slash + path
# Instantiate a MIDI Track (contains a list of MIDI events)
track = midi.Track()
# Append the track to the pattern
pat.append(track)
# Goes through extracted song and reconstruct them (pattern[1])
'''
tr = 1
start_val = 1
i = 1
'''
# World is MIne sample window
tr = 0
start_val = 14
i = 14
#print pattern
'''
# Suteki Da Ne sample window
tr = 1
start_val = 1
i = 1
'''
while True:
#print i
#if i > len(pattern[tr]) - 2:
if i > len(pattern[tr]) - 2:
break
#print pattern[tr][i]
tick = pattern[tr][i].tick
pitch = pattern[tr][i].data[0]
# Because some pattern[][].data does not have a second array element
if len(pattern[tr][i].data) == 2:
velocity = pattern[tr][i].data[1]
else:
velocity = 0
# Place all of tick, pitch, and velocity values in indiviudal vectors
tick = np.array([tick])
pitch = np.array([pitch])
velocity = np.array([velocity])
if i == start_val:
tick_ar = tick
pitch_ar = pitch
velocity_ar = velocity
else:
tick_ar = np.concatenate((tick_ar, tick))
pitch_ar = np.concatenate((pitch_ar, pitch))
velocity_ar = np.concatenate((velocity_ar, tick))
# To reconstruct the entire song in its (piano-like) original form
#track.append(midi.NoteOnEvent(tick= tick, channel=1, data=[pitch, velocity]))
i = i + 1
j = j + 1
return pattern, tick_ar, velocity_ar, pitch_ar
def midi2notes(midifile, scale):
# these dict of list of dicts that is:
# dict for each channel, list for each event, dict for {pitch; rest, duration}
note_ons = dict()
rests = dict()
tracks = dict()
instruments = dict()
meter = []
pattern = midi.read_midifile(midifile)
remaining_time = [track[0].ticks for track in pattern]
position_in_track = [0 for track in pattern]
while not (all(t is None for t in remaining_time)):
# new sixteenth step
if currTime % (pattern.resolution / 4) == (pattern.resolution / 8):
for track_note_ons in note_ons:
# Add rest if no held notes found
if len(note_ons[track_note_ons]) == 0:
note_ons[track_note_ons].append({"pitch":-1, "rest":True, "len":1})
# Prolong everything by 1 sixteenth
for notes in note_ons[track_note_ons]:
notes["len"] += 1
for i in range(len(remaining_time)):
while remaining_time[i] == 0:
track = pattern[i]
pos = position_in_track[i]
event = track[pos]
if isinstance(event, midi.ProgramChangeEvent):
if i not in tracks:
# tracks hold pitch, rest, duration, scale for each note
tracks[i] = []
note_ons[i] = []
instruments[i] = instrument_classes.get_instrument_class(event.data[0])
if isinstance(event, midi.TimeSignatureEvent):
meter.append(event.nominator + "/" + event.denominator)
for i in tracks:
tracks[i].append(Meter_Change.TRUE)
if isinstance(event, midi.NoteEvent):
if isinstance(event, midi.NoteOffEvent) or event.velocity == 0:
for note in note_ons[i]:
if note["pitch"] == event.pitch:
new_note = Note(pitch=note["pitch"], rest=False, duration=note["len"], scale=scale)
tracks[i].append(new_note)
note_ons[i].remove(note)
if note in note_ons[i]:
print("DEBUG: Je hlaseno nebezpeci mili agenti 007")
else:
#TODO: detect ongoing notes for new polyphonies
# Delete rests
for rest in note_ons[i]:
if rest["rest"]:
new_note = Note(pitch=-1, rest=True, duration=rest["len"], scale=scale)
tracks[i].append(new_note)
note_ons[i].remove(rest)
if rest in note_ons[i]:
print("DEBUG: Je hlaseno nebezpeci mili agenti 007")
note_ons[i].append({"pitch":event.pitch, "rest":False, "len":0})
try:
remainingTime[i] = track[pos + 1].tick
positionInTrack[i] += 1
# a bit of a bad practice here, but it's not the main time consuming part of the program
except IndexError:
remainingTime[i] = None
def __init__(self, cfg, ui):
# This bit is quite tedious. I apologise.
self.segmentation = []
for _ in range(18):
self.segmentation.append(np.zeros((7, 7), dtype=np.uint8))
self.segmentation[1][:, :] = 1
self.segmentation[2][:, :] = 2
self.segmentation[2][0:3, :] = 1
self.segmentation[2][3, 0:3] = 1
self.segmentation[3][:, :] = 1
self.segmentation[3][2, 2:] = 2
self.segmentation[3][3:5, :] = 2
self.segmentation[3][4, 5:] = 3
self.segmentation[3][5:, :] = 3
self.segmentation[4][:, :] = 1
self.segmentation[4][:4, 4:] = 2
self.segmentation[4][4:, 3:] = 3
self.segmentation[4][3:, :3] = 4
self.segmentation[5][:, :] = 5
self.segmentation[5][:3, :3] = 1
self.segmentation[5][:3, 4:] = 3
self.segmentation[5][4:, :3] = 2
self.segmentation[5][4:, 4:] = 4
self.segmentation[6][:, :] = 1
self.segmentation[6][:4, 2:4] = 2
self.segmentation[6][:4, 4:6] = 3
self.segmentation[6][4:, :3] = 4
self.segmentation[6][4:, 3:6] = 5
self.segmentation[7][0, :] = 1
self.segmentation[7][1, :] = 2
self.segmentation[7][2, :] = 3
self.segmentation[7][3, :] = 4
self.segmentation[7][4, :] = 5
self.segmentation[7][5, :] = 6
self.segmentation[7][6, :] = 7
self.segmentation[8][:, :] = 7
self.segmentation[8][:, 6] = 8
self.segmentation[8][:3, :2] = 1
self.segmentation[8][:3, 2:4] = 2
self.segmentation[8][:3, 4:6] = 3
self.segmentation[8][3:6, :2] = 4
self.segmentation[8][3:6, 2:4] = 5
self.segmentation[8][3:6, 4:6] = 6
self.segmentation[9][:, :] = 9
self.segmentation[9][:2, :2] = 1
self.segmentation[9][:2, 2:4] = 2
self.segmentation[9][:2, 4:] = 3
self.segmentation[9][2:4, :2] = 4
self.segmentation[9][2:4, 2:4] = 5
self.segmentation[9][2:4, 4:] = 6
self.segmentation[9][4:6, :3] = 7
self.segmentation[9][4:6, 3:] = 8
self.segmentation[10][:, :] = self.segmentation[9]
self.segmentation[10][6, 3:] = 10
self.segmentation[11][:, :] = self.segmentation[9]
self.segmentation[11][4:6, 5:] = 9
self.segmentation[11][6, :3] = 10
self.segmentation[11][6, 3:] = 11
self.segmentation[12][:, :] = self.segmentation[11]
self.segmentation[12][:4, 6] = 12
self.segmentation[13][:, :] = 13
self.segmentation[13][:3, 0] = 1
self.segmentation[13][:3, 1] = 2
self.segmentation[13][:3, 2] = 3
self.segmentation[13][:3, 3] = 4
self.segmentation[13][:3, 4] = 5
self.segmentation[13][:3, 5] = 6
self.segmentation[13][3:6, 0] = 7
self.segmentation[13][3:6, 1] = 8
self.segmentation[13][3:6, 2] = 9
self.segmentation[13][3:6, 3] = 10
self.segmentation[13][3:6, 4] = 11
self.segmentation[13][3:6, 5] = 12
self.segmentation[14][:, :] = self.segmentation[13]
self.segmentation[14][6, :] = 14
self.segmentation[15][:, :] = self.segmentation[14]
self.segmentation[15][6, 4:] = 15
self.segmentation[15][4:, 6] = 15
self.segmentation[16][:, :] = self.segmentation[15]
self.segmentation[16][6, 3] = 15
self.segmentation[16][4:, 6] = 16
# Urgh, that was awful.
logger.info("Starting Gridi")
self.gen = self.generator()
self.midi_p = midi.read_midifile(cfg)
self.midi_res = self.midi_p.resolution
self.midi_p.make_ticks_abs()
self.events = self.midi_p[np.argmax([len(t) for t in self.midi_p])]
self.events = []
for t in self.midi_p:
for event in t:
self.events.append(event)
self.events.sort(key=lambda x: x.tick)
self.t_delay = 60 / 120 / self.midi_res
self.state = np.zeros((7, 7, 3), dtype=np.uint8)
self.midi_client = 128
self.midi_port = 0
self.hw = midi.sequencer.SequencerHardware()
self.seq = midi.sequencer.SequencerWrite(
sequencer_resolution=self.midi_res)
self.seq.subscribe_port(self.midi_client, self.midi_port)
self.seq.start_sequencer()
self.channels = []
for event in self.events:
if isinstance(event, midi.NoteOnEvent):
if event.channel not in self.channels:
self.channels.append(event.channel)
self.channels.sort()
# Now we know how many channels we have. We choose the appropriate
# self.segmentations, then for each channel make a mask array.
# This part is a little messy becuase the channels may not be
# sequential, or all exist. e.g. we could just have 1 and 12.
self.pole_assignments = []
for idx in range(len(self.channels)):
self.pole_assignments.append(
self.segmentation[len(self.channels)] == idx + 1)
def midiToNoteStateMatrix(midifile, squash=True, span=span):
pattern = midi.read_midifile(midifile)
timeleft = [track[0].tick for track in pattern]
posns = [0 for track in pattern]
statematrix = []
time = 0
state = [[0,0] for x in range(span)]
statematrix.append(state)
condition = True
while condition:
if time % (pattern.resolution / 4) == (pattern.resolution / 8):
# Crossed a note boundary. Create a new state, defaulting to holding notes
oldstate = state
state = [[oldstate[x][0],0] for x in range(span)]
statematrix.append(state)
for i in range(len(timeleft)): #For each track
if not condition:
break
while timeleft[i] == 0:
track = pattern[i]
pos = posns[i]
evt = track[pos]
if isinstance(evt, midi.NoteEvent):
if (evt.pitch < lowerBound) or (evt.pitch >= upperBound):
pass
# print "Note {} at time {} out of bounds (ignoring)".format(evt.pitch, time)
else:
if isinstance(evt, midi.NoteOffEvent) or evt.velocity == 0:
state[evt.pitch-lowerBound] = [0, 0]
else:
state[evt.pitch-lowerBound] = [1, 1]
elif isinstance(evt, midi.TimeSignatureEvent):
if evt.numerator not in (2, 4):
# We don't want to worry about non-4 time signatures. Bail early!
# print "Found time signature event {}. Bailing!".format(evt)
out = statematrix
condition = False
break
try:
timeleft[i] = track[pos + 1].tick
posns[i] += 1
except IndexError:
timeleft[i] = None
if timeleft[i] is not None:
timeleft[i] -= 1
if all(t is None for t in timeleft):
break
time += 1
S = np.array(statematrix)
statematrix = np.hstack((S[:, :, 0], S[:, :, 1]))
statematrix = np.asarray(statematrix).tolist()
return statematrix
def generate_events(midifile):
'''Retruns a touple of midi resolution and raw list of midi events
for the input midi file'''
midi_dump = midi.read_midifile(midifile)
return midi_dump.resolution, midi_dump[0]
def generate_embeddings_from_midi(midifile):
'''Returns a list of all embedding lists for the input path to a
format 0 midi file. Other midi formats not supported'''
midi_dump = midi.read_midifile(midifile)
# only format 0 supported
if len(midi_dump) != 1:
raise RuntimeError("Only format 0 midi files are supported.")
midi_track = midi_dump[0]
ppqn = midi_dump.resolution
tempo = 500000
ticks = int(0)
# embeddigns for the midi
# format is a one hot encoded vector of notes
# last element is the duraiton of the note in milliseconds
embeddings = []
# bookkeeping for which notes are being played currently
note_state = []
for event_idx in range(len(midi_track)):
curr_event = midi_track[event_idx]
delta_ticks = curr_event.tick
event_name = curr_event.name
event_data = curr_event.data
ticks += delta_ticks
if event_name is midi.NoteOnEvent.name and delta_ticks == 0:
note_state.append(event_data[0])
elif event_name is midi.NoteOnEvent.name and delta_ticks != 0:
embeddings.append(embed_note(note_state, delta_ticks, tempo, ppqn))
note_state.append(event_data[0])
elif event_name is midi.NoteOffEvent.name and delta_ticks == 0:
if event_data[0] in note_state:
note_state.remove(event_data[0])
elif event_name is midi.NoteOffEvent.name and delta_ticks != 0:
embeddings.append(embed_note(note_state, delta_ticks, tempo, ppqn))
if event_data[0] in note_state:
note_state.remove(event_data[0])
elif event_name is midi.SetTempoEvent.name and delta_ticks == 0:
# mid-song tempo change
# tempo is represented in microseconds per beat as tt tt tt - 24-bit (3-byte) hex
# convert first to binary string and then to a decimal number (microsec/beat)
tempo_binary = (format(curr_event.data[0], '08b') +
format(curr_event.data[1], '08b') +
format(curr_event.data[2], '08b'))
tempo = int(tempo_binary, 2)
elif event_name is midi.SetTempoEvent.name and delta_ticks != 0:
embeddings.append(embed_note(note_state, delta_ticks, tempo, ppqn))
tempo_binary = (format(curr_event.data[0], '08b') +
format(curr_event.data[1], '08b') +
format(curr_event.data[2], '08b'))
tempo = int(tempo_binary, 2)
elif event_name is midi.EndOfTrackEvent.name:
break
elif event_name is midi.TimeSignatureEvent.name:
# lets not worry about non-4 time signatures
if curr_event.numerator not in (2, 4):
break
else:
continue
return embeddings
