def flat_roll(self, track_range=None):
if not isinstance(self.midi, AbsoluteMidi):
self.midi = AbsoluteMidi.to_abs_midi(self.midi)
N = 128
# self.note_range = [0, 128] if not note_range else note_range
self.track_range = [
0, self.midi.track_count
] if not track_range else track_range if not numpy.isscalar(
track_range) else [track_range - 1, track_range]
LEN = 4800
trackers = numpy.zeros(self.midi.track_count)
track_anas = meta_event_format.X
res_set = numpy.zeros((self.midi.track_count, LEN))
for i in range(self.track_range[0], self.track_range[1]):
t = self.midi.tracks[i]
instrument = t.get_event('instrument_name', depth=1)
try:
ttempo = t.get_event('set_tempo', depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
# tempo = ttempo
except IndexError:
#Occurs because set_tempo is not register in every track explicitly, usually specified in first track only and all track follows the same rhythm forward
#Considering the tempo_event in first track [0] , if there too error raised then tempo == 120 bpm
try:
ttempo = self.midi.tracks[0].get_event('set_tempo',
depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
except IndexError:
tempo = 500000
pass
nit = 0 #numpy array iterator
prev_oucr, dut = 0, 0
# print(t.trk_event[-11 : -1])
for e in t.trk_event:
if e.is_note_on_off_event():
noteval = e.data[0]
if prev_oucr == e.abstime:
nit -= dut
dut = int(32 // mutils.nth_note(e.elength, tempo=tempo))
prev_oucr = e.abstime
res_set[i][nit:nit + dut] += noteval
nit += dut
self.flat_roll = res_set
return res_set
def flat_notes(self, track_range=None, trim=True, note_range=None):
if not isinstance(self.midi, AbsoluteMidi):
self.midi = AbsoluteMidi.to_abs_midi(self.midi)
N = 128
self.note_range = [0, 128] if not note_range else note_range
self.track_range = [
0, self.midi.track_count
] if not track_range else track_range if not numpy.isscalar(
track_range) else [track_range - 1, track_range]
LEN = 10000
trackers = numpy.zeros(self.midi.track_count)
track_anas = meta_event_format.X
res_set = numpy.zeros((self.midi.track_count, LEN, self.__DEPTH__))
for i in range(self.track_range[0], self.track_range[1]):
t = self.midi.tracks[i]
instrument = t.get_event('instrument_name', depth=1)
try:
ttempo = t.get_event('set_tempo', depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
# tempo = ttempo
except IndexError:
#Occurs because set_tempo is not register in every track explicitly, usually in first track only and all track follows the same rhythm forward
#Considering the tempo_event in first track [0] , if there too error raised then tempo == 120 bpm
try:
ttempo = self.midi.tracks[0].get_event('set_tempo',
depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
except IndexError:
tempo = 500000
pass
# tp = 0
# for e in t.trk_event:
# if e.is_note_on_off_event():
# noteval = e.data[0]
# res_set[i][tp] = noteval
# tp += 1
"""
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
"""
nit = 0 #numpy array iterator
prev_oucr, dut, dep = -1, 0, 0
dep = 0
for e in t.trk_event:
if e.is_note_on_off_event():
# if e.is_note_off_event(): continue
if 0x8f < e.event_id < 0x90 or e.data[1] == 0: continue
noteval = e.data[0]
# res_set[i][tp] = noteval
# tp += 1
#builting from here
if prev_oucr == e.abstime:
dep += 1 # going to next note on same time instance
else:
dep = 0
nit += 1 # going to next note instance
noteval = e.data[0] - self.note_range[0]
if noteval >= N or dep >= self.__DEPTH__: continue
dut = int(
32 // mutils.nth_note(e.elength, tempo=tempo)
) if mutils.nth_note(e.elength, tempo=tempo) != 0 else 0
prev_oucr = e.abstime
res_set[i][nit][dep] += noteval
# nit += dut
self.roll = res_set
if trim:
res_set_list = []
for i in range(res_set.shape[0]):
booln = False
res_set_trk_list = []
for n in range(res_set.shape[1]):
if numpy.array_equal(res_set[i][n], ZEROS_FIVE) and booln:
continue
# res_nt = [0, 0, 0, 0, 0]
# for j in range(res_set.shape[2]):
# res_nt[j] = res_set[i][n][j]
res_set_trk_list.append(list(res_set[i][n]))
booln = True
res_set_list.append(res_set_trk_list)
MX = max([len(l) for l in res_set_list])
# print(res_set_list)
return dutils.to_numpy_array_from_3D_list(
res_set_list, [res_set.shape[0], MX, 5])
return res_set
def flat_pianoroll(self, note_range=None, track_range=None, trim=True):
"""min timespan of roll 32nd note
Keyword Arguments:
note_range {list} -- 2 element list/tuple (default: {None})
track_range {list} -- 2 element list/tuple (default: {None})
Returns:
[ndarray] -- flat_piano_roll
"""
if not isinstance(self.midi, AbsoluteMidi):
self.midi = AbsoluteMidi.to_abs_midi(self.midi)
N = 128 if not note_range else note_range[1] - note_range[0]
self.note_range = [0, 128] if not note_range else note_range
self.track_range = [
0, self.midi.track_count
] if not track_range else track_range if not numpy.isscalar(
track_range) else [track_range - 1, track_range]
LEN = 9600
trackers = numpy.zeros(self.midi.track_count)
track_anas = meta_event_format.X
res_set = numpy.zeros((self.midi.track_count, LEN, self.__DEPTH__))
print(res_set.shape)
for i in range(self.track_range[0], self.track_range[1]):
t = self.midi.tracks[i]
instrument = t.get_event('instrument_name', depth=1)
try:
ttempo = t.get_event('set_tempo', depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
# tempo = ttempo
except IndexError:
#Occurs because set_tempo is not register in every track explicitly, usually in first track only and all track follows the same rhythm forward
#Considering the tempo_event in first track [0] , if there too error raised then tempo == 120 bpm
try:
ttempo = self.midi.tracks[0].get_event('set_tempo',
depth=1)
tempo = mutils.toint(ttempo[0].data, 8)
except IndexError:
tempo = 500000
pass
nit = 0 #numpy array iterator
prev_oucr, dut = 0, 0
# print(t.trk_event[-11 : -1])
dep = -1
for e in t.trk_event:
if e.is_note_on_off_event():
noteval = e.data[0] - self.note_range[0]
if prev_oucr == e.abstime:
nit -= dut
if prev_oucr == e.abstime or dep == -1:
dep += 1 # going to next note on same time instance
else:
dep = 0
# nit += 1 # going to next note instance
if noteval >= N: continue
if dep >= self.__DEPTH__:
dep = 0
continue
dut = int(32 // mutils.nth_note(e.elength, tempo=tempo))
prev_oucr = e.abstime
for k in range(dut):
res_set[i][nit + k][dep] = noteval
# res_set[i][nit : nit + dut][dep] += noteval
nit += dut
self.roll = res_set
if trim:
res_set_list = []
for i in range(res_set.shape[0]):
res_set_trk_list = []
for n in range(res_set.shape[1]):
if numpy.any(res_set[i, n]):
res_set_trk_list.append(list(res_set[i][n]))
res_set_list.append(res_set_trk_list)
MX = max([len(l) for l in res_set_list])
return dutils.to_numpy_array_from_3D_list(
res_set_list, [res_set.shape[0], MX, 5])
return res_set
