def testBasicD(self):
from music21 import stream, note, converter, spanner
import copy
s = stream.Stream()
n1 = note.Note('d2', quarterLength=2.0)
n2 = note.Note('e2', quarterLength=2.0)
sp = spanner.Slur(n1, n2)
s.append(n1)
s.append(n2)
s.append(sp)
# the deepcopy is what creates the bug in the preservation of a weakref
#temp = converter.freezeStr(s)
sCopy = copy.deepcopy(s)
temp = converter.freezeStr(sCopy)
post = converter.thawStr(temp)
self.assertEqual(len(post.notes), 2)
self.assertEqual(str(post.notes[0].pitch), 'D2')
spPost = post.spanners[0]
self.assertEqual(spPost.getSpannedElements(), [
post.notes[0], post.notes[1]])
self.assertEqual(spPost.getSpannedElementIds(), [
id(post.notes[0]), id(post.notes[1])])
def testStreams02(self):
# based on Stream.testAddSlurByMelisma(self):
#from music21 import corpus, spanner
nStart = None
nEnd = None
ex = corpus.parse('luca/gloria').parts['cantus'].measures(1, 11)
exFlatNotes = ex.flat.notesAndRests.stream()
nLast = exFlatNotes[-1]
for i, n in enumerate(exFlatNotes):
if i < len(exFlatNotes) - 1:
nNext = exFlatNotes[i + 1]
else:
continue
if n.lyrics:
nStart = n
# if next is a begin, then this is an end
elif nStart is not None and nNext.lyrics and n.tie is None:
nEnd = n
elif nNext is nLast:
nEnd = n
if nStart is not None and nEnd is not None:
nStart.addLyric(nStart.beatStr)
ex.insert(spanner.Slur(nStart, nEnd))
nStart = None
nEnd = None
for sp in ex.spanners.getElementsByClass('Slur'):
#environLocal.printDebug(['sp', n.nameWithOctave, sp])
n = sp.getFirst()
def testFreezeThawWithSpanner(self):
from music21 import stream, note, spanner
s = stream.Stream()
sDummy = stream.Stream()
n = note.Note()
sl1 = spanner.Slur([n])
s.insert(0.0, sl1)
s.insert(2.0, n)
sDummy.insert(3.0, n)
self.assertIs(s.spanners[0].getFirst(), s.notes[0])
sf = StreamFreezer(s)
out = sf.writeStr(fmt='jsonpickle') # easier to read...
del s
del sDummy
del n
st = StreamThawer()
st.openStr(out)
outStream = st.stream
self.assertEqual(len(outStream), 2)
self.assertEqual(outStream.notes[0].offset, 2.0)
self.assertIs(outStream.spanners[0].getFirst(), outStream.notes[0])
def addSlur(self):
"""Adds a slur to the neumes notes"""
notes = self.notes.elements
if len(notes) > 1:
slur = spanner.Slur(notes)
slur.priority = -1
self.insert(0, slur)
def testSpannersWrite(self):
p = converter.parse("tinynotation: 4/4 c4 d e f g a b c' b a g2")
listNotes = list(p.recurse().notes)
c = listNotes[0]
d = listNotes[1]
sl1 = spanner.Slur([c, d])
p.insert(0.0, sl1)
f = listNotes[3]
g = listNotes[4]
a = listNotes[5]
sl2 = spanner.Slur([f, g, a])
p.insert(0.0, sl2)
c2 = listNotes[6]
g2 = listNotes[-1]
sl3 = spanner.Slur([c2, g2])
p.insert(0.0, sl3)
self.assertEqual(self.getXml(p).count('<slur '), 6)
def setDurationForObject(self, generalNote, durationInfo):
'''
generalNote could be a Note, Chord, or Rest
DurationInfo is a string like:
Whole,Dotted,Slur
'''
from music21 import noteworthy
dictionaries = noteworthy.dictionaries
parts = durationInfo.split(',')
lengthnote = parts[0]
thisNoteIsSlurred = False
durationObject = duration.Duration(
dictionaries["dictionaryNoteLength"][lengthnote])
for kk in parts:
if kk == "Grace":
#print "GRACE NOTE"
# Now it doesn't work, the function for grace notes have to be added here
environLocal.warn('skipping grace note')
return
elif kk == "Slur":
#print "SLUR"
if self.withinSlur is False:
self.beginningSlurNote = generalNote
thisNoteIsSlurred = True
elif kk == "Dotted":
durationObject.dots = 1
elif kk == "DblDotted":
durationObject.dots = 2
elif kk == "Triplet" or kk == "Triplet=First" or kk == "Triplet=End":
tup = duration.Tuplet(3, 2, durationObject.type)
durationObject.appendTuplet(tup)
generalNote.duration = durationObject
# if Slur
if self.withinSlur is True and thisNoteIsSlurred is False:
music21SlurObj = spanner.Slur(self.beginningSlurNote, generalNote)
self.currentMeasure.append(music21SlurObj)
self.withinSlur = False
elif thisNoteIsSlurred is True:
self.withinSlur = True
else:
self.withinSlur = False
def testBasicF(self):
from music21 import stream, note, converter, spanner
s = stream.Score()
s.repeatAppend(note.Note('G4'), 5)
for i, syl in enumerate(['se-', 'ri-', 'al-', 'iz-', 'ing']):
s.notes[i].addLyric(syl)
s.append(spanner.Slur(s.notes[0], s.notes[-1]))
# file writing
#converter.freeze(s, fmt='pickle', fp='/_scratch/test.p')
data = converter.freezeStr(s, fmt='pickle')
sPost = converter.thawStr(data)
self.assertEqual(len(sPost.notes), 5)
def testSpannerSerializationOfNotesNotInPickle(self):
'''
test to see if spanners serialize properly if they
contain notes not in the pickle...
'''
from music21 import stream, spanner, converter
from music21 import note
n1 = note.Note("D4")
n2 = note.Note("E4")
n3 = note.Note("F4")
slur1 = spanner.Slur([n1, n2])
s = stream.Part()
s.insert(0, n3)
s.insert(0, slur1)
data = converter.freezeStr(s, fmt='pickle')
unused_s2 = converter.thawStr(data)
def testStreams01(self):
'''
Basic stream issues
'''
#from music21 import note, stream, clef, metadata, spanner
#==== "fig-df02"
# Storing, Ordering, and Timing Elements
n1 = note.Note('g3', type='half')
n2 = note.Note('d4', type='half')
cf1 = clef.AltoClef()
m1 = stream.Measure(number=1)
m1.append([n1, n2])
m1.insert(0, cf1)
# the measure has three elements
assert len(m1) == 3
# the offset returned is the most-recently set
assert n2.offset == 2.0
# automatic sorting positions Clef first
assert m1[0] == cf1
# list-like indices follow sort order
assert m1.index(n2) == 2
# can find an element based on a given offset
assert m1.getElementAtOrBefore(3) == n2
n3 = note.Note('g#3', quarterLength=0.5)
n4 = note.Note('d-4', quarterLength=3.5)
m2 = stream.Measure(number=2)
m2.append([n3, n4])
# appended position is after n3
assert n4.offset == .5
assert m2.highestOffset == .5
# can access objects on elements
assert m2[1].duration.quarterLength == 3.5
# the Stream duration is the highest offset + duration
assert m2.duration.quarterLength == 4
p1 = stream.Part()
p1.append([m1, m2])
# the part has 2 components
assert len(p1) == 2
# the Stream duration is the highest offset + durations
assert p1.duration.quarterLength == 8
# can access Notes from Part using multiple indices
assert p1[1][0].pitch.nameWithOctave == 'G#3'
s1 = stream.Score()
s1.append(p1)
md1 = metadata.Metadata(title='The music21 Stream')
s1.insert(0, md1)
# calling show by default renders musicxml output
#s1.show()
#==== "fig-df02" end
#==== "fig-df03"
# Positioning the Same Element in Multiple Containers
# show positioning the same element in multiple containers
# do not yet use a flat representation
s2 = stream.Stream()
s3 = stream.Stream()
s2.insert(10, n2)
s3.insert(40, n2)
# the offset attribute returns the last assigned
assert n2.offset == 40
# we can provide a site to finde a location-specific offset
assert n2.getOffsetBySite(m1) == 2.0
assert n2.getOffsetBySite(s2) == 10
# the None site provides a default offset
assert set(n2.sites.get()) == set([None, m1, s2, s3])
# the same instance is found in all Streams
assert m1.hasElement(n2) == True
assert s2.hasElement(n2) == True
assert s3.hasElement(n2) == True
# only offset is independent to each location
n2.pitch.transpose('-M2', inPlace=True)
assert s2[s2.index(n2)].nameWithOctave == 'C4'
assert s3[s3.index(n2)].nameWithOctave == 'C4'
assert m1[m1.index(n2)].nameWithOctave == 'C4'
# the transposition is maintained in the original context
#s1.show()
#==== "fig-df03" end
#==== "fig-df04"
# Simultaneous Access to Hierarchical and Flat Representations
#s1.flat.show('t')
# lengths show the number of elements; indices are sequential
s1Flat = s1.flat
assert len(s1) == 2
assert len(s1Flat) == 6
assert s1Flat[4] == n3
assert s1Flat[5] == n4
# adding another Part to the Score results in a different flat representation
n5 = note.Note('a#1', quarterLength=2.5)
n6 = note.Note('b2', quarterLength=1.5)
m4 = stream.Measure(number=2)
m4.append([n5, n6])
r1 = note.Rest(type='whole')
cf2 = clef.bestClef(m4) # = BassClef
m3 = stream.Measure(number=1)
m3.append([cf2, r1])
p2 = stream.Part()
p2.append([m3, m4])
s1.insert(0, p2)
assert 'BassClef' in cf2.classes
# objects are sorted by offset
s1Flat = s1.flat
assert len(s1) == 3
assert len(s1.flat) == 10
assert s1Flat[6] == n3
assert s1Flat[7] == n5
assert s1Flat[8] == n4
assert s1Flat[9] == n6
# the F-sharp in m. 2 now as offsets for both flat non-flat sites
assert n3.getOffsetBySite(m2) == 0
assert n3.getOffsetBySite(s1Flat) == 4
# the B in m. 2 now as offsets for both flat non-flat sites
assert n6.getOffsetBySite(m4) == 2.5
assert n6.getOffsetBySite(s1Flat) == 6.5
#s1.show()
#==== "fig-df04" end
#==== "fig-df05"
# Iterating and Filtering Elements by Class
# get the Clef object, and report its sign, from Measure 1
assert m1.getElementsByClass('Clef').stream()[0].sign == 'C'
# collect into a list the sign of all clefs in the flat Score
assert [cf.sign
for cf in s1.flat.getElementsByClass('Clef')] == ['C', 'F']
# collect the offsets Measures in the first part
assert [e.offset for e in p1.elements] == [0.0, 4.0]
# collect the offsets of Note in the first part flattened
assert [e.offset
for e in p1.flat.notesAndRests] == [0.0, 2.0, 4.0, 4.5]
# collect the offsets of Notes in all parts flattened
assert [e.offset for e in s1.flat.notesAndRests
] == [0.0, 0.0, 2.0, 4.0, 4.0, 4.5, 6.5]
# get all pitch names
match = []
for e in s1.flat.getElementsByClass('Note').stream():
match.append(e.pitch.nameWithOctave)
assert match == ['G3', 'C4', 'G#3', 'A#1', 'D-4', 'B2']
# collect all Notes and transpose up a perfect fifth
for n in s1.flat.getElementsByClass('Note').stream():
n.transpose('P5', inPlace=True)
# check that all pitches are correctly transposed
match = []
for e in s1.flat.getElementsByClass('Note').stream():
match.append(e.pitch.nameWithOctave)
assert match == ['D4', 'G4', 'D#4', 'E#2', 'A-4', 'F#3']
#s1.show()
#==== "fig-df05" end
#==== "fig-df06"
# Searching by Locations and Contexts
# a Note can always find a Clef
self.assertIs(n4.getContextByClass('Clef'), cf1)
# must search oldest sites first
assert n6.getContextByClass('Clef',
sortByCreationTime='reverse') == cf2
# # a Note can find their Measure number from a flat Part
# match = []
# for e in p1.flat.getElementsByClass('Note'):
# match.append(e.getContextByClass('Measure').number)
# assert match == [1, 1, 2, 2]
# all Notes can find their Measure number from a flat Score
match = []
for e in s1.flat.notesAndRests:
match.append([e.name, e.getContextByClass('Measure').number])
assert match == [['D', 1], ['rest', 1], ['G', 1], ['D#', 2], ['E#', 2],
['A-', 2], ['F#', 2]]
#==== "fig-df06" end
#==== "fig-df06"
# Non-Hierarchical Object Associations
#oldIds = []
#for idKey in n1.sites.siteDict:
# print (idKey, n1.sites.siteDict[idKey].isDead)
# oldIds.append(idKey)
#print("-------")
# Spanners can be positioned in Parts or Measures
sp1 = spanner.Slur([n1, n4])
p1.append(sp1)
sp2 = spanner.Slur([n5, n6])
m4.insert(0, sp2)
#print(id(sp1), id(sp1.spannerStorage), n1.sites.siteDict[id(sp1.spannerStorage)].isDead)
#if id(sp1.spannerStorage) in oldIds:
# print ("******!!!!!!!!!*******")
# Elements can report on what Spanner they belong to
ss1 = n1.getSpannerSites()
self.assertTrue(sp1 in ss1, (ss1, sp1))
ss6 = n6.getSpannerSites()
assert sp2 in ss6
# p1Flat = p1.flat
# assert sp1.getDurationSpanBySite(p1Flat) == [0.0, 8.0]
#
# p2Flat = p2.flat
# assert sp2.getDurationSpanBySite(p2Flat) == [4.0, 8.0]
#s1.show()
#==== "fig-df06" end
# additional tests
self.assertEqual(m1.clef, cf1)