def get_music(a, b, key='C', mode='major'):
midi_out = StringIO()
scale = build_scale(key, mode, octaves=1)
matcher = SequenceMatcher(None, a, b)
tone = key.lower()
melodies = [tone]
for tag, i1, i2, j1, j2 in matcher.get_opcodes():
next_note = None
if tag == 'replace':
next_note = 'r'
elif tag == 'equal':
next_note = tone
elif tag == 'delete':
tone = tone_down(tone, scale)
next_note = tone
elif tag == 'insert':
tone = tone_up(tone, scale)
next_note = tone
melodies += [next_note] * ((i2 - i1) or 1)
s = SMF([parse(" ".join(melodies))])
s.write(midi_out)
return midi_out
def test_write_midi_multi_tacks(self):
"""
Writing out test.mid to ensure midi processing works.
This isn't really a test.
"""
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test1 = OSequence([
Point({OFFSET_64: o, MIDI_PITCH: m, DURATION_64: d}) for (o, m, d) in [
(0, 60, 16), (16, 72, 16), (32, 64, 16), (48, 55, 16),
]
])
test2 = OSequence([
Point({OFFSET_64: o, MIDI_PITCH: m, DURATION_64: d}) for (o, m, d) in [
(0, 55, 16), (16, 55, 16), (32, 64, 16), (48 + 16, 55, 16 * 10),
]
])
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b"""MThd\x00\x00\x00\x06\x00\x01\x00\x03\x00\x10MTrk\x00\x00\x00&\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\ttest song\x00\xff/\x00MTrk\x00\x00\x00'\x00\xc0\x00\x00\x90<@\x10\x80<\x00\x00\x90H@\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\x907@\x10\x807\x00\x00\xff/\x00MTrk\x00\x00\x00(\x00\xc1\x10\x00\x917@\x10\x817\x00\x00\x917@\x10\x817\x00\x00\x91@@\x10\x81@\x00\x10\x917@\x81 \x817\x00\x00\xff/\x00"""
s = SMF([test1, test2], instruments=[0, 16])
s.write(out_fd, title="test song")
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
def test_write_midi(self):
"""
Writing out test.mid to ensure midi processing works.
This isn't really a test.
"""
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test = OSequence([
Point({OFFSET_64: o, MIDI_PITCH: m, DURATION_64: d}) for (o, m, d) in [
(0, 60, 16), (16, 72, 16), (32, 64, 16), (48, 55, 16),
(64, 74, 16), (80, 62, 16), (96, 50, 16), (112, 48, 16),
(128, 36, 16), (144, 24, 16), (160, 40, 16), (176, 55, 16),
(192, 26, 16), (208, 38, 16), (224, 50, 16), (240, 48, 16)
]
])
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b'MThd\x00\x00\x00\x06\x00\x01\x00\x02\x00\x10MTrk\x00\x00\x00%\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\x08untitled\x00\xff/\x00MTrk\x00\x00\x00\x87\x00\xc0\x00\x00\x90<@\x10\x80<\x00\x00\x90H@\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\x907@\x10\x807\x00\x00\x90J@\x10\x80J\x00\x00\x90>@\x10\x80>\x00\x00\x902@\x10\x802\x00\x00\x900@\x10\x800\x00\x00\x90$@\x10\x80$\x00\x00\x90\x18@\x10\x80\x18\x00\x00\x90(@\x10\x80(\x00\x00\x907@\x10\x807\x00\x00\x90\x1a@\x10\x80\x1a\x00\x00\x90&@\x10\x80&\x00\x00\x902@\x10\x802\x00\x00\x900@\x10\x800\x00\x00\xff/\x00'
s = SMF([test], instruments=None)
s.write(out_fd)
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
def separate_files():
for num, pattern in enumerate(patterns):
sequence = parse(pattern)
f = open("in_c_%s.mid" % (num + 1), "w")
s = SMF([sequence])
s.write(f)
f.close()
def test_velocity_from_note_with_invalid_velocities(self):
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test = OSequence([
Point({
OFFSET_64: o,
MIDI_PITCH: m,
DURATION_64: d
}) for (o, m, d) in [(0, 60, 16), (16, 72, 16), (32, 64, 16)]
])
test[0]['velocity'] = -1
test[1]['velocity'] = 300
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b'MThd\x00\x00\x00\x06\x00\x01\x00\x02\x00\x10MTrk\x00\x00\x00&\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\ttest song\x00\xff/\x00MTrk\x00\x00\x00\x1f\x00\xc0\x00\x00\x90<\x00\x10\x80<\x00\x00\x90H\xff\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\xff/\x00'
s = SMF([test])
s.write(out_fd, title="test song")
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
def one_file():
seq = OSequence([])
for num, pattern in enumerate(patterns):
seq = seq + parse(pattern) * 10
f = open("in_c_all.mid", "w")
s = SMF([seq])
s.write(f)
f.close()
def performance():
tracks = []
for track_num in range(8): # 8 tracks
seq = OSequence([])
for pattern in patterns:
seq += parse(pattern) * random.randint(2, 5) # repeat 2-5 times
tracks.append(seq | transpose(random.choice([-12, 0, 12]))) # transpose -1, 0 or 1 octaves
f = open("in_c_performance.mid", "w")
s = SMF(tracks)
s.write(f)
f.close()
def test_write_midi(self):
"""
Writing out test.mid to ensure midi processing works.
This isn't really a test.
"""
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test = OSequence([
Point({
OFFSET_64: o,
MIDI_PITCH: m,
DURATION_64: d
})
for (o, m,
d) in [(0, 60,
16), (16, 72,
16), (32, 64,
16), (48, 55,
16), (64, 74,
16), (80, 62,
16), (96, 50,
16), (112, 48,
16),
(128, 36,
16), (144, 24,
16), (160, 40,
16), (176, 55,
16), (192, 26,
16), (208, 38,
16), (224, 50,
16), (240, 48,
16)]
])
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b'MThd\x00\x00\x00\x06\x00\x01\x00\x02\x00\x10MTrk\x00\x00\x00%\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\x08untitled\x00\xff/\x00MTrk\x00\x00\x00\x87\x00\xc0\x00\x00\x90<@\x10\x80<\x00\x00\x90H@\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\x907@\x10\x807\x00\x00\x90J@\x10\x80J\x00\x00\x90>@\x10\x80>\x00\x00\x902@\x10\x802\x00\x00\x900@\x10\x800\x00\x00\x90$@\x10\x80$\x00\x00\x90\x18@\x10\x80\x18\x00\x00\x90(@\x10\x80(\x00\x00\x907@\x10\x807\x00\x00\x90\x1a@\x10\x80\x1a\x00\x00\x90&@\x10\x80&\x00\x00\x902@\x10\x802\x00\x00\x900@\x10\x800\x00\x00\xff/\x00'
s = SMF([test], instruments=None)
s.write(out_fd)
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
def test_write_midi_multi_tacks(self):
"""
Writing out test.mid to ensure midi processing works.
This isn't really a test.
"""
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test1 = OSequence([
Point({
OFFSET_64: o,
MIDI_PITCH: m,
DURATION_64: d
}) for (o, m, d) in [
(0, 60, 16),
(16, 72, 16),
(32, 64, 16),
(48, 55, 16),
]
])
test2 = OSequence([
Point({
OFFSET_64: o,
MIDI_PITCH: m,
DURATION_64: d
}) for (o, m, d) in [
(0, 55, 16),
(16, 55, 16),
(32, 64, 16),
(48 + 16, 55, 16 * 10),
]
])
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b"""MThd\x00\x00\x00\x06\x00\x01\x00\x03\x00\x10MTrk\x00\x00\x00&\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\ttest song\x00\xff/\x00MTrk\x00\x00\x00'\x00\xc0\x00\x00\x90<@\x10\x80<\x00\x00\x90H@\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\x907@\x10\x807\x00\x00\xff/\x00MTrk\x00\x00\x00(\x00\xc1\x10\x00\x917@\x10\x817\x00\x00\x917@\x10\x817\x00\x00\x91@@\x10\x81@\x00\x10\x917@\x81 \x817\x00\x00\xff/\x00"""
s = SMF([test1, test2], instruments=[0, 16])
s.write(out_fd, title="test song")
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
def test_velocity_from_note_with_invalid_velocities(self):
from sebastian.core import OSequence, Point
from sebastian.core import OFFSET_64, MIDI_PITCH, DURATION_64
test = OSequence([
Point({OFFSET_64: o, MIDI_PITCH: m, DURATION_64: d}) for (o, m, d) in [
(0, 60, 16), (16, 72, 16), (32, 64, 16)
]
])
test[0]['velocity'] = -1
test[1]['velocity'] = 300
from sebastian.midi.write_midi import SMF
from io import BytesIO
out_fd = BytesIO(bytearray())
expected_bytes = b'MThd\x00\x00\x00\x06\x00\x01\x00\x02\x00\x10MTrk\x00\x00\x00&\x00\xffX\x04\x04\x02\x18\x08\x00\xffY\x02\x00\x00\x00\xffQ\x03\x07\xa1 \x00\xff\x03\ttest song\x00\xff/\x00MTrk\x00\x00\x00\x1f\x00\xc0\x00\x00\x90<\x00\x10\x80<\x00\x00\x90H\xff\x10\x80H\x00\x00\x90@@\x10\x80@\x00\x00\xff/\x00'
s = SMF([test])
s.write(out_fd, title="test song")
actual_bytes = out_fd.getvalue()
self.assertEqual(expected_bytes, actual_bytes)
#!/usr/bin/env python
from sebastian.lilypond.interp import parse
from sebastian.midi.write_midi import SMF
rh = parse(r"""
\relative c'' {
g16 fis g8 ~ g16 d16 e fis g a b cis
d16 cis d8 ~ d16 a16 b cis d e fis d
g16 fis g8 ~ g16 fis16 e d cis e a, g
fis e d cis d fis a, g fis a d,8
}""")
lh = parse(r"""
\relative c {
g8 b'16 a b8 g g, g'
fis,8 fis'16 e fis8 d fis, d'
e,8 e'16 d e8 g a, cis'
d, fis16 e fis8 d d,
}""")
# operator overloading FTW!
seq = rh // lh
if __name__ == "__main__":
f = open("var1.mid", "w")
s = SMF([seq])
s.write(f)
f.close()
def get_music(series, key='C', mode='major', octaves=2,
instruments=None, period=12):
'''
Returns music generated from an inserted series.
Parameters
----------
series : an array that could be an 2d-array.
key : Musical key.
Can be setted as a parameter while building scale.
Key should be written as "C", for C and "C#" for C sharp and
"Cb" for C flat.
mode : Music mode.
'major', 'minor' and 'pentatonic' are accetable parameters.
More options of modes on `build_scale`.
octaves : Number of available scales for musical construction.
As higher are the octaves higher pitch differeneces will occur
while representing your data.
instruments : list of MIDI instruments.
General MIDI Level 1 Instrument Patch Map can be found at:
http://en.wikipedia.org/wiki/General_MIDI
Gran Piano is the default usage value '[0]' if any instruments
are declared.
Fewer examples:
[0] Acoustic Grand Piano
[18] Rock Organ
[23] Tango Accordion
[32] Acoustic Bass
[73] Flute
period : int
parameter of chord_scaled function.
Returns
-------
midi_out : BytesIO object.
It can be written on a file or used by your way.
Example
-------
>>> data = np.random.random(10).reshape(2,5)
array([[ 0.13536875, 0.42212475, 0.26360219, 0.30153336, 0.62150923],
[ 0.49384405, 0.32503762, 0.85549822, 0.80212442, 0.70702405]])
>>> get_music(data, octaves=2, instruments=(0,23))
<io.BytesIO instance at 0x7f98201c9d40>
'''
midi_out = BytesIO()
series = np.array(series)
scale = build_scale(key, mode, octaves)
melodies = []
if len(series.shape) == 1:
if all(np.isnan(series)):
melody = []
melodies.append(melody)
else:
snotes = note_number(series, scale)
melody = parse(' '.join([note_name(x, scale) for x in snotes]))
melodies.append(melody)
else:
for i in range(series.shape[0]):
if all(np.isnan(series[i])):
melody = []
melodies.append(melody)
else:
snotes = note_number(series[i], scale)
melody = parse(' '.join([note_name(x, scale) for x in snotes]))
melodies.append(melody)
# chords = chord_scaled(series, scale, period)
# Transform it to a MIDI file with chords.
# s = SMF([melody, chords], instruments=[0, 23])
if instruments is None:
s = SMF(melodies)
else:
s = SMF(melodies, instruments)
s.write(midi_out)
return midi_out