def romanTextToStreamScore(rtHandler, inputM21=None):
'''The main processing module for single-movement RomanText works.
Given a romanText handler or string, return or fill a Score Stream.
'''
# accept a string directly; mostly for testing
if common.isStr(rtHandler):
rtf = romanTextModule.RTFile()
rtHandler = rtf.readstr(rtHandler) # return handler, processes tokens
# this could be just a Stream, but b/c we are creating metadata, perhaps better to match presentation of other scores.
from music21 import metadata
from music21 import stream
from music21 import note
from music21 import meter
from music21 import key
from music21 import roman
from music21 import tie
if inputM21 == None:
s = stream.Score()
else:
s = inputM21
# metadata can be first
md = metadata.Metadata()
s.insert(0, md)
p = stream.Part()
# ts indication are found in header, and also found elsewhere
tsCurrent = meter.TimeSignature('4/4') # create default 4/4
tsSet = False # store if set to a measure
lastMeasureToken = None
lastMeasureNumber = 0
previousRn = None
keySigCurrent = None
keySigSet = True # set a keySignature
foundAKeySignatureSoFar = False
kCurrent, unused_prefixLyric = _getKeyAndPrefix('C') # default if none defined
prefixLyric = ''
repeatEndings = {}
for t in rtHandler.tokens:
try:
# environLocal.printDebug(['token', t])
if t.isTitle():
md.title = t.data
elif t.isWork():
md.alternativeTitle = t.data
elif t.isPiece():
md.alternativeTitle = t.data
elif t.isComposer():
md.composer = t.data
elif t.isMovement():
md.movementNumber = t.data
elif t.isTimeSignature():
tsCurrent = meter.TimeSignature(t.data)
tsSet = False
# environLocal.printDebug(['tsCurrent:', tsCurrent])
elif t.isKeySignature():
if t.data == "":
keySigCurrent = key.KeySignature(0)
elif t.data == "Bb":
keySigCurrent = key.KeySignature(-1)
else:
pass
# better to print a message
# environLocal.printDebug(['still need to write a generic RomanText KeySignature routine. this is just temporary'])
# raise RomanTextTranslateException("still need to write a generic RomanText KeySignature routine. this is just temporary")
keySigSet = False
# environLocal.printDebug(['keySigCurrent:', keySigCurrent])
foundAKeySignatureSoFar = True
elif t.isMeasure():
# environLocal.printDebug(['handling measure token:', t])
if t.variantNumber is not None:
# environLocal.printDebug(['skipping variant: %s' % t])
continue
if t.variantLetter is not None:
# environLocal.printDebug(['skipping variant: %s' % t])
continue
# if this measure number is more than 1 greater than the last
# defined measure number, and the previous chord is not None,
# then fill with copies of the last-defined measure
if ((t.number[0] > lastMeasureNumber + 1) and
(previousRn is not None)):
for i in range(lastMeasureNumber + 1, t.number[0]):
mFill = stream.Measure()
mFill.number = i
newRn = copy.deepcopy(previousRn)
newRn.lyric = ""
# set to entire bar duration and tie
newRn.duration = copy.deepcopy(tsCurrent.barDuration)
if previousRn.tie is None:
previousRn.tie = tie.Tie('start')
else:
previousRn.tie.type = 'continue'
# set to stop for now; may extend on next iteration
newRn.tie = tie.Tie('stop')
previousRn = newRn
mFill.append(newRn)
appendMeasureToRepeatEndingsDict(lastMeasureToken, mFill, repeatEndings, i)
p.append(mFill)
lastMeasureNumber = t.number[0] - 1
lastMeasureToken = t
# create a new measure or copy a past measure
if len(t.number) == 1 and t.isCopyDefinition: # if not a range
m, kCurrent = _copySingleMeasure(t, p, kCurrent)
p.append(m)
lastMeasureNumber = m.number
lastMeasureToken = t
romans = m.getElementsByClass(roman.RomanNumeral)
if len(romans) > 0:
previousRn = romans[-1]
elif len(t.number) > 1:
measures, kCurrent = _copyMultipleMeasures(t, p, kCurrent)
p.append(measures)
lastMeasureNumber = measures[-1].number
lastMeasureToken = t
romans = measures[-1].getElementsByClass(roman.RomanNumeral)
if len(romans) > 0:
previousRn = romans[-1]
else:
m = stream.Measure()
m.number = t.number[0]
appendMeasureToRepeatEndingsDict(t, m, repeatEndings)
lastMeasureNumber = t.number[0]
lastMeasureToken = t
if not tsSet:
m.timeSignature = tsCurrent
tsSet = True # only set when changed
if not keySigSet and keySigCurrent is not None:
m.insert(0, keySigCurrent)
keySigSet = True # only set when changed
o = 0.0 # start offsets at zero
previousChordInMeasure = None
pivotChordPossible = False
numberOfAtoms = len(t.atoms)
setKeyChangeToken = False # first RomanNumeral object after a key change should have this set to True
for i, a in enumerate(t.atoms):
if isinstance(a, romanTextModule.RTKey) or \
((foundAKeySignatureSoFar == False) and \
(isinstance(a, romanTextModule.RTAnalyticKey))):
# found a change of Key+KeySignature or
# just found a change of analysis but no keysignature so far
# environLocal.printDebug(['handling key token:', a])
try: # this sets the key and the keysignature
kCurrent, pl = _getKeyAndPrefix(a)
prefixLyric += pl
except:
raise RomanTextTranslateException('cannot get key from %s in line %s' % (a.src, t.src))
# insert at beginning of measure if at beginning -- for things like pickups.
if m.number < 2:
m.insert(0, kCurrent)
else:
m.insert(o, kCurrent)
foundAKeySignatureSoFar = True
setKeyChangeToken = True
elif isinstance(a, romanTextModule.RTKeySignature):
try: # this sets the keysignature but not the prefix text
thisSig = a.getKeySignature()
except:
raise RomanTextTranslateException('cannot get key from %s in line %s' % (a.src, t.src))
#insert at beginning of measure if at beginning -- for things like pickups.
if m.number < 2:
m.insert(0, thisSig)
else:
m.insert(o, thisSig)
foundAKeySignatureSoFar = True
elif isinstance(a, romanTextModule.RTAnalyticKey):
# just a change in analyzed key, not a change in anything else
#try: # this sets the key, not the keysignature
kCurrent, pl = _getKeyAndPrefix(a)
prefixLyric += pl
setKeyChangeToken = True
#except:
# raise RomanTextTranslateException('cannot get key from %s in line %s' % (a.src, t.src))
elif isinstance(a, romanTextModule.RTBeat):
# set new offset based on beat
try:
o = a.getOffset(tsCurrent)
except ValueError:
raise RomanTextTranslateException("cannot properly get an offset from beat data %s under timeSignature %s in line %s" % (a.src, tsCurrent, t.src))
if (previousChordInMeasure is None and
previousRn is not None and o > 0):
# setting a new beat before giving any chords
firstChord = copy.deepcopy(previousRn)
firstChord.quarterLength = o
firstChord.lyric = ""
if previousRn.tie == None:
previousRn.tie = tie.Tie('start')
else:
previousRn.tie.type = 'continue'
firstChord.tie = tie.Tie('stop')
previousRn = firstChord
previousChordInMeasure = firstChord
m.insert(0, firstChord)
pivotChordPossible = False
elif isinstance(a, romanTextModule.RTNoChord):
# use source to evaluation roman
rn = note.Rest()
if pivotChordPossible == False:
# probably best to find duration
if previousChordInMeasure is None:
pass # use default duration
else: # update duration of previous chord in Measure
oPrevious = previousChordInMeasure.getOffsetBySite(m)
newQL = o - oPrevious
if newQL <= 0:
raise RomanTextTranslateException('too many notes in this measure: %s' % t.src)
previousChordInMeasure.quarterLength = newQL
prefixLyric = ""
m.insert(o, rn)
previousChordInMeasure = rn
previousRn = rn
pivotChordPossible = False
elif isinstance(a, romanTextModule.RTChord):
# use source to evaluation roman
try:
asrc = a.src
# if kCurrent.mode == 'minor':
# if asrc.lower().startswith('vi'): #vi or vii w/ or w/o o
# if asrc.upper() == a.src: # VI or VII to bVI or bVII
# asrc = 'b' + asrc
rn = roman.RomanNumeral(asrc, copy.deepcopy(kCurrent))
if setKeyChangeToken is True:
rn.followsKeyChange = True
setKeyChangeToken = False
else:
rn.followsKeyChange = False
except (roman.RomanNumeralException,
common.Music21CommonException):
#environLocal.printDebug('cannot create RN from: %s' % a.src)
rn = note.Note() # create placeholder
if pivotChordPossible == False:
# probably best to find duration
if previousChordInMeasure is None:
pass # use default duration
else: # update duration of previous chord in Measure
oPrevious = previousChordInMeasure.getOffsetBySite(m)
newQL = o - oPrevious
if newQL <= 0:
raise RomanTextTranslateException('too many notes in this measure: %s' % t.src)
previousChordInMeasure.quarterLength = newQL
rn.addLyric(prefixLyric + a.src)
prefixLyric = ""
m.insert(o, rn)
previousChordInMeasure = rn
previousRn = rn
pivotChordPossible = True
else:
previousChordInMeasure.lyric += "//" + prefixLyric + a.src
previousChordInMeasure.pivotChord = rn
prefixLyric = ""
pivotChordPossible = False
elif isinstance(a, romanTextModule.RTRepeat):
if o == 0:
if isinstance(a, romanTextModule.RTRepeatStart):
m.leftBarline = bar.Repeat(direction='start')
else:
rtt = RomanTextUnprocessedToken(a)
m.insert(o, rtt)
elif tsCurrent is not None and (tsCurrent.barDuration.quarterLength == o or i == numberOfAtoms - 1):
if isinstance(a, romanTextModule.RTRepeatStop):
m.rightBarline = bar.Repeat(direction='end')
else:
rtt = RomanTextUnprocessedToken(a)
m.insert(o, rtt)
else: # mid measure repeat signs
rtt = RomanTextUnprocessedToken(a)
m.insert(o, rtt)
else:
rtt = RomanTextUnprocessedToken(a)
m.insert(o, rtt)
#environLocal.warn("Got an unknown token: %r" % a)
# may need to adjust duration of last chord added
if tsCurrent is not None:
previousRn.quarterLength = tsCurrent.barDuration.quarterLength - o
p.append(m)
except Exception:
import traceback
tracebackMessage = traceback.format_exc()
raise RomanTextTranslateException("At line %d for token %r, an exception was raised: \n%s" % (t.lineNumber, t, tracebackMessage))
fixPickupMeasure(p)
p.makeBeams(inPlace=True)
p.makeAccidentals(inPlace=True)
_addRepeatsFromRepeatEndings(p, repeatEndings) # 1st and second endings...
s.insert(0, p)
return s
def parseTokens(mh, dst, p, useMeasures):
'''
parses all the tokens in a measure or part.
'''
# in case need to transpose due to clef indication
from music21 import abcFormat
postTransposition = 0
clefSet = False
for t in mh.tokens:
if isinstance(t, abcFormat.ABCMetadata):
if t.isMeter():
ts = t.getTimeSignatureObject()
if ts is not None: # can be None
# should append at the right position
if useMeasures: # assume at start of measures
dst.timeSignature = ts
else:
dst.coreAppend(ts)
elif t.isKey():
ks = t.getKeySignatureObject()
if useMeasures: # assume at start of measures
dst.keySignature = ks
else:
dst.coreAppend(ks)
# check for clef information sometimes stored in key
clefObj, transposition = t.getClefObject()
if clefObj is not None:
clefSet = False
# environLocal.printDebug(['found clef in key token:', t,
# clefObj, transposition])
if useMeasures: # assume at start of measures
dst.clef = clefObj
else:
dst.coreAppend(clefObj)
postTransposition = transposition
elif t.isTempo():
mmObj = t.getMetronomeMarkObject()
dst.coreAppend(mmObj)
# as ABCChord is subclass of ABCNote, handle first
elif isinstance(t, abcFormat.ABCChord):
# may have more than notes?
pitchNameList = []
accStatusList = [] # accidental display status list
for tSub in t.subTokens:
# notes are contained as subtokens are already parsed
if isinstance(tSub, abcFormat.ABCNote):
pitchNameList.append(tSub.pitchName)
accStatusList.append(tSub.accidentalDisplayStatus)
c = chord.Chord(pitchNameList)
c.duration.quarterLength = t.quarterLength
if t.activeTuplet:
thisTuplet = copy.deepcopy(t.activeTuplet)
if thisTuplet.durationNormal is None:
thisTuplet.setDurationType(c.duration.type,
c.duration.dots)
c.duration.appendTuplet(thisTuplet)
# adjust accidental display for each contained pitch
for pIndex in range(len(c.pitches)):
if c.pitches[pIndex].accidental is None:
continue
c.pitches[pIndex].accidental.displayStatus = accStatusList[
pIndex]
dst.coreAppend(c)
# ql += t.quarterLength
elif isinstance(t, abcFormat.ABCNote):
# add the attached chord symbol
if t.chordSymbols:
cs_name = t.chordSymbols[0]
cs_name = re.sub('["]', '', cs_name).lstrip().rstrip()
cs_name = re.sub('[()]', '', cs_name)
cs_name = common.cleanedFlatNotation(cs_name)
try:
if cs_name in ('NC', 'N.C.', 'No Chord', 'None'):
cs = harmony.NoChord(cs_name)
else:
cs = harmony.ChordSymbol(cs_name)
dst.coreAppend(cs, setActiveSite=False)
dst.coreElementsChanged()
except ValueError:
pass # Exclude malformed chord
if t.isRest:
n = note.Rest()
else:
n = note.Note(t.pitchName)
if n.pitch.accidental is not None:
n.pitch.accidental.displayStatus = t.accidentalDisplayStatus
n.duration.quarterLength = t.quarterLength
if t.activeTuplet:
thisTuplet = copy.deepcopy(t.activeTuplet)
if thisTuplet.durationNormal is None:
thisTuplet.setDurationType(n.duration.type,
n.duration.dots)
n.duration.appendTuplet(thisTuplet)
# start or end a tie at note n
if t.tie is not None:
if t.tie in ('start', 'continue'):
n.tie = tie.Tie(t.tie)
n.tie.style = 'normal'
elif t.tie == 'stop':
n.tie = tie.Tie(t.tie)
# Was: Extremely Slow for large Opus files... why?
# Answer: some pieces didn't close all their spanners, so
# everything was in a Slur/Diminuendo, etc.
for span in t.applicableSpanners:
span.addSpannedElements(n)
if t.inGrace:
n = n.getGrace()
n.articulations = []
while any(t.articulations):
tokenArticulationStr = t.articulations.pop()
if tokenArticulationStr not in _abcArticulationsToM21:
continue
m21ArticulationClass = _abcArticulationsToM21[
tokenArticulationStr]
m21ArticulationObj = m21ArticulationClass()
n.articulations.append(m21ArticulationObj)
dst.coreAppend(n, setActiveSite=False)
elif isinstance(t, abcFormat.ABCSlurStart):
p.coreAppend(t.slurObj)
elif isinstance(t, abcFormat.ABCCrescStart):
p.coreAppend(t.crescObj)
elif isinstance(t, abcFormat.ABCDimStart):
p.coreAppend(t.dimObj)
dst.coreElementsChanged()
return postTransposition, clefSet
def _musedataRecordListToNoteOrChord(records, previousElement=None):
'''Given a list of MuseDataRecord objects, return a configured
:class:`~music21.note.Note` or :class:`~music21.chord.Chord`.
Optionally pass a previous element, which may be music21 Note, Chord, or Rest;
this is used to determine tie status
'''
from music21 import note
from music21 import chord
from music21 import tie
if len(records) == 1:
post = note.Note()
# directly assign pitch object; will already have accidental
post.pitch = records[0].getPitchObject()
else:
#environLocal.printDebug(['attempting chord creation: records', len(records)])
# can supply a lost of Pitch objects at creation
post = chord.Chord([r.getPitchObject() for r in records])
# if a chord, we are assume that all durations are the same
post.quarterLength = records[0].getQuarterLength()
# see if there are nay lyrics; not sure what to do if lyrics are defined
# for multiple chord tones
lyricList = records[0].getLyrics()
if lyricList is not None:
# cyclicalling addLyric will auto increment lyric number assinged
for lyric in lyricList:
post.addLyric(lyric)
# see if there are any beams; again, get from first record only
beamsChars = records[0].getBeams()
if beamsChars is not None:
post.beams = _musedataBeamToBeams(beamsChars)
# get accents and expressions; assumes all on first
# returns an empty list of None
dynamicObjs = [] # stored in stream, not Note
for a in records[0].getArticulationObjects():
post.articulations.append(a)
for e in records[0].getExpressionObjects():
post.expressions.append(e)
for d in records[0].getDynamicObjects():
dynamicObjs.append(d)
# presently this sets a single tie for a chord; may be different cases
if records[0].isTied():
post.tie = tie.Tie('start') # can be start or continue;
if previousElement != None and previousElement.tie != None:
# if previous is a start or a continue; this has to be a continue
# as musedata does not mark the end of a tie
if previousElement.tie.type in ['start', 'continue']:
post.tie = tie.Tie('continue')
else: # if no tie indication in the musedata record
if previousElement != None and previousElement.tie != None:
if previousElement.tie.type in ['start', 'continue']:
post.tie = tie.Tie('stop') # can be start, end, continue
return post, dynamicObjs
def parseTokens(mh, dst, p, useMeasures):
# in case need to transpose due to clef indication
from music21 import abcFormat
postTransposition = 0
clefSet = False
for t in mh.tokens:
if isinstance(t, abcFormat.ABCMetadata):
if t.isMeter():
ts = t.getTimeSignatureObject()
if ts != None: # can be None
# should append at the right position
if useMeasures: # assume at start of measures
dst.timeSignature = ts
else:
dst._appendCore(ts)
elif t.isKey():
ks = t.getKeySignatureObject()
if useMeasures: # assume at start of measures
dst.keySignature = ks
else:
dst._appendCore(ks)
# check for clef information sometimes stored in key
clefObj, transposition = t.getClefObject()
if clefObj != None:
clefSet = False
#environLocal.printDebug(['found clef in key token:', t,
# clefObj, transposition])
if useMeasures: # assume at start of measures
dst.clef = clefObj
else:
dst._appendCore(clefObj)
postTransposition = transposition
elif t.isTempo():
mmObj = t.getMetronomeMarkObject()
dst._appendCore(mmObj)
# as ABCChord is subclass of ABCNote, handle first
elif isinstance(t, abcFormat.ABCChord):
# may have more than notes?
pitchNameList = []
accStatusList = [] # accidental display status list
for tSub in t.subTokens:
# notes are contained as subtokens are already parsed
if isinstance(tSub, abcFormat.ABCNote):
pitchNameList.append(tSub.pitchName)
accStatusList.append(tSub.accidentalDisplayStatus)
c = chord.Chord(pitchNameList)
c.quarterLength = t.quarterLength
# adjust accidental display for each contained pitch
for pIndex in range(len(c.pitches)):
if c.pitches[pIndex].accidental == None:
continue
c.pitches[pIndex].accidental.displayStatus = accStatusList[
pIndex]
dst._appendCore(c)
#ql += t.quarterLength
elif isinstance(t, abcFormat.ABCNote):
if t.isRest:
n = note.Rest()
else:
n = note.Note(t.pitchName)
if n.pitch.accidental != None:
n.pitch.accidental.displayStatus = t.accidentalDisplayStatus
n.quarterLength = t.quarterLength
# start or end a tie at note n
if t.tie is not None:
if t.tie == "start":
n.tie = tie.Tie(t.tie)
n.tie.style = "normal"
elif t.tie == "stop":
n.tie = tie.Tie(t.tie)
### Was: Extremely Slow for large Opus files... why?
### Answer: some pieces didn't close all their spanners, so
### everything was in a Slur/Diminuendo, etc.
for span in t.applicableSpanners:
span.addSpannedElements(n)
if t.inGrace:
n = n.getGrace()
n.articulations = []
while any(t.artic):
tmp = t.artic.pop()
if tmp == "staccato":
n.articulations.append(articulations.Staccato())
elif tmp == "upbow":
n.articulations.append(articulations.UpBow())
elif tmp == "downbow":
n.articulations.append(articulations.DownBow())
elif tmp == "accent":
n.articulations.append(articulations.Accent())
elif tmp == "strongaccent":
n.articulations.append(articulations.StrongAccent())
elif tmp == "tenuto":
n.articulations.append(articulations.Tenuto())
dst._appendCore(n)
elif isinstance(t, abcFormat.ABCSlurStart):
p._appendCore(t.slurObj)
elif isinstance(t, abcFormat.ABCCrescStart):
p._appendCore(t.crescObj)
elif isinstance(t, abcFormat.ABCDimStart):
p._appendCore(t.dimObj)
dst.elementsChanged()
return postTransposition, clefSet
def abcToStreamPart(abcHandler, inputM21=None, spannerBundle=None):
'''
Handler conversion of a single Part of a multi-part score.
Results are added into the provided inputM21 object
or a newly created Part object
The part object is then returned.
'''
from music21 import abcFormat
if inputM21 is None:
p = stream.Part()
else:
p = inputM21
if spannerBundle is None:
#environLocal.printDebug(['mxToMeasure()', 'creating SpannerBundle'])
spannerBundle = spanner.SpannerBundle()
# need to call on entire handlers, as looks for special criterial,
# like that at least 2 regular bars are used, not just double bars
if abcHandler.definesMeasures():
# first, split into a list of Measures; if there is only metadata and
# one measure, that means that no measures are defined
barHandlers = abcHandler.splitByMeasure()
#environLocal.printDebug(['barHandlers', len(barHandlers)])
# merge loading meta data with each bar that preceedes it
mergedHandlers = abcFormat.mergeLeadingMetaData(barHandlers)
#environLocal.printDebug(['mergedHandlers', len(mergedHandlers)])
else: # simply stick in a single list
mergedHandlers = [abcHandler]
# if only one merged handler, do not create measures
if len(mergedHandlers) <= 1:
useMeasures = False
else:
useMeasures = True
# each unit in merged handlers defines possible a Measure (w/ or w/o metadata), trailing meta data, or a single collection of metadata and note data
barCount = 0
measureNumber = 1
# merged handler are ABCHandlerBar objects, defining attributes for barlines
for mh in mergedHandlers:
# if use measures and the handler has notes; otherwise add to part
#environLocal.printDebug(['abcToStreamPart', 'handler', 'left:', mh.leftBarToken, 'right:', mh.rightBarToken, 'len(mh)', len(mh)])
if useMeasures and mh.hasNotes():
#environLocal.printDebug(['abcToStreamPart', 'useMeasures', useMeasures, 'mh.hasNotes()', mh.hasNotes()])
dst = stream.Measure()
# bar tokens are already extracted form token list and are available
# as attributes on the handler object
# may return None for a regular barline
if mh.leftBarToken is not None:
# this may be Repeat Bar subclass
bLeft = mh.leftBarToken.getBarObject()
if bLeft != None:
dst.leftBarline = bLeft
if mh.leftBarToken.isRepeatBracket():
# get any open spanners of RepeatBracket type
rbSpanners = spannerBundle.getByClassComplete(
'RepeatBracket', False)
# this indication is most likely an opening, as ABC does
# not encode second ending ending boundaries
# we can still check thought:
if len(rbSpanners) == 0:
# add this measure as a componnt
rb = spanner.RepeatBracket(dst)
# set number, returned here
rb.number = mh.leftBarToken.isRepeatBracket()
# only append if created; otherwise, already stored
spannerBundle.append(rb)
else: # close it here
rb = rbSpanners[0] # get RepeatBracket
rb.addSpannedElements(dst)
rb.completeStatus = True
# this returns 1 or 2 depending on the repeat
# in ABC, second repeats close immediately; that is
# they never span more than one measure
if mh.leftBarToken.isRepeatBracket() == 2:
rb.completeStatus = True
if mh.rightBarToken is not None:
bRight = mh.rightBarToken.getBarObject()
if bRight != None:
dst.rightBarline = bRight
# above returns bars and repeats; we need to look if we just
# have repeats
if mh.rightBarToken.isRepeat():
# if we have a right bar repeat, and a spanner repeat
# bracket is open (even if just assigned above) we need
# to close it now.
# presently, now r bar conditions start a repeat bracket
rbSpanners = spannerBundle.getByClassComplete(
'RepeatBracket', False)
if len(rbSpanners) > 0:
rb = rbSpanners[0] # get RepeatBracket
rb.addSpannedElements(dst)
rb.completeStatus = True
# this returns 1 or 2 depending on the repeat
# do not need to append; already in bundle
barCount += 1
else:
dst = p # store directly in a part instance
#environLocal.printDebug([mh, 'dst', dst])
#ql = 0 # might not be zero if there is a pickup
# in case need to transpose due to clef indication
postTransposition = 0
clefSet = False
for t in mh.tokens:
if isinstance(t, abcFormat.ABCMetadata):
if t.isMeter():
ts = t.getTimeSignatureObject()
if ts != None: # can be None
# should append at the right position
if useMeasures: # assume at start of measures
dst.timeSignature = ts
else:
dst._appendCore(ts)
elif t.isKey():
ks = t.getKeySignatureObject()
if useMeasures: # assume at start of measures
dst.keySignature = ks
else:
dst._appendCore(ks)
# check for clef information sometimes stored in key
clefObj, transposition = t.getClefObject()
if clefObj != None:
clefSet = False
#environLocal.printDebug(['found clef in key token:', t, clefObj, transposition])
if useMeasures: # assume at start of measures
dst.clef = clefObj
else:
dst._appendCore(clefObj)
postTransposition = transposition
elif t.isTempo():
mmObj = t.getMetronomeMarkObject()
dst._appendCore(mmObj)
# as ABCChord is subclass of ABCNote, handle first
elif isinstance(t, abcFormat.ABCChord):
# may have more than notes?
pitchNameList = []
accStatusList = [] # accidental display status list
for tSub in t.subTokens:
# notes are contained as subtokens are already parsed
if isinstance(tSub, abcFormat.ABCNote):
pitchNameList.append(tSub.pitchName)
accStatusList.append(tSub.accidentalDisplayStatus)
c = chord.Chord(pitchNameList)
c.quarterLength = t.quarterLength
# adjust accidental display for each contained pitch
for pIndex in range(len(c.pitches)):
if c.pitches[pIndex].accidental == None:
continue
c.pitches[pIndex].accidental.displayStatus = accStatusList[
pIndex]
dst._appendCore(c)
#ql += t.quarterLength
elif isinstance(t, abcFormat.ABCNote):
if t.isRest:
n = note.Rest()
else:
n = note.Note(t.pitchName)
if n.accidental != None:
n.accidental.displayStatus = t.accidentalDisplayStatus
n.quarterLength = t.quarterLength
# start or end a tie at note n
if t.tie is not None:
if t.tie == "start":
n.tie = tie.Tie(t.tie)
n.tie.style = "normal"
elif t.tie == "stop":
n.tie = tie.Tie(t.tie)
### Was: Extremely Slow for large Opus files... why?
### Answer: some pieces didn't close all their spanners, so
### everything was in a Slur/Diminuendo, etc.
for span in t.applicableSpanners:
span.addSpannedElements(n)
if t.inGrace:
n = n.getGrace()
n.articulations = []
while len(t.artic) > 0:
tmp = t.artic.pop()
if tmp == "staccato":
n.articulations.append(articulations.Staccato())
if tmp == "upbow":
n.articulations.append(articulations.UpBow())
if tmp == "downbow":
n.articulations.append(articulations.DownBow())
if tmp == "accent":
n.articulations.append(articulations.Accent())
if tmp == "strongaccent":
n.articulations.append(articulations.StrongAccent())
if tmp == "tenuto":
n.articulations.append(articulations.Tenuto())
dst._appendCore(n)
elif isinstance(t, abcFormat.ABCSlurStart):
p._appendCore(t.slurObj)
elif isinstance(t, abcFormat.ABCCrescStart):
p._appendCore(t.crescObj)
elif isinstance(t, abcFormat.ABCDimStart):
p._appendCore(t.dimObj)
dst._elementsChanged()
# append measure to part; in the case of trailing meta data
# dst may be part, even though useMeasures is True
if useMeasures and 'Measure' in dst.classes:
# check for incomplete bars
# must have a time signature in this bar, or defined recently
# could use getTimeSignatures() on Stream
if barCount == 1 and dst.timeSignature != None: # easy case
# can only do this b/c ts is defined
if dst.barDurationProportion() < 1.0:
dst.padAsAnacrusis()
dst.number = 0
#environLocal.printDebug(['incompletely filled Measure found on abc import; interpreting as a anacrusis:', 'padingLeft:', dst.paddingLeft])
else:
dst.number = measureNumber
measureNumber += 1
p._appendCore(dst)
try:
reBar(p, inPlace=True)
except (ABCTranslateException, meter.MeterException, ZeroDivisionError):
pass
# clefs are not typically defined, but if so, are set to the first measure
# following the meta data, or in the open stream
if not clefSet:
if useMeasures: # assume at start of measures
p.getElementsByClass('Measure')[0].clef = p.flat.bestClef()
else:
p._insertCore(0, p.bestClef())
if postTransposition != 0:
p.transpose(postTransposition, inPlace=True)
if useMeasures and len(
p.flat.getTimeSignatures(searchContext=False,
returnDefault=False)) > 0:
# call make beams for now; later, import beams
#environLocal.printDebug(['abcToStreamPart: calling makeBeams'])
try:
p.makeBeams(inPlace=True)
except meter.MeterException as e:
environLocal.warn("Error in beaming...ignoring: %s" % str(e))
# copy spanners into topmost container; here, a part
rm = []
for sp in spannerBundle.getByCompleteStatus(True):
p._insertCore(0, sp)
rm.append(sp)
# remove from original spanner bundle
for sp in rm:
spannerBundle.remove(sp)
p._elementsChanged()
return p
def reduceThisMeasure(self, mI, measureIndex, maxChords, closedPosition,
forceOctave):
m = stream.Measure()
m.number = measureIndex
mIchord = mI.chordify()
newPart = self.reduceMeasureToNChords(
mIchord,
maxChords,
weightAlgorithm=self.qlbsmpConsonance,
trimBelow=0.3)
#newPart.show('text')
cLast = None
cLastEnd = 0.0
for cEl in newPart:
cElCopy = copy.deepcopy(cEl)
if 'Chord' in cEl.classes and closedPosition is not False:
if forceOctave is not False:
cElCopy.closedPosition(forceOctave=forceOctave,
inPlace=True)
else:
cElCopy.closedPosition(inPlace=True)
cElCopy.removeRedundantPitches(inPlace=True)
newOffset = cEl.getOffsetBySite(newPart)
# extend over gaps
if cLast is not None:
if round(newOffset - cLastEnd, 6) != 0.0:
cLast.quarterLength += newOffset - cLastEnd
cLast = cElCopy
cLastEnd = newOffset + cElCopy.quarterLength
m._insertCore(newOffset, cElCopy)
tsContext = mI.parts[0].getContextByClass('TimeSignature')
if tsContext is not None:
if round(tsContext.barDuration.quarterLength - cLastEnd, 6) != 0.0:
cLast.quarterLength += tsContext.barDuration.quarterLength - cLastEnd
m.elementsChanged()
# add ties
if self._lastPitchedObject is not None:
firstPitched = m[0]
if self._lastPitchedObject.isNote and firstPitched.isNote:
if self._lastPitchedObject.pitch == firstPitched.pitch:
self._lastPitchedObject.tie = tie.Tie("start")
elif self._lastPitchedObject.isChord and firstPitched.isChord:
if len(self._lastPitchedObject) == len(firstPitched):
allSame = True
for pitchI in range(len(self._lastPitchedObject)):
if (self._lastPitchedObject.pitches[pitchI] !=
firstPitched.pitches[pitchI]):
allSame = False
if allSame is True:
self._lastPitchedObject.tie = tie.Tie('start')
self._lastPitchedObject = m[-1]
sourceMeasureTs = mI.parts[0].getElementsByClass(
'Measure')[0].timeSignature
if sourceMeasureTs != self._lastTs:
m.timeSignature = copy.deepcopy(sourceMeasureTs)
self._lastTs = sourceMeasureTs
return m
def multiPartReduction(self, inStream, maxChords = 2, closedPosition = False, forceOctave = False):
'''
Return a multipart reduction of a stream.
'''
i = 0
p = stream.Part()
lastPitchedObject = None
gobcM = inStream.parts[0].getElementsByClass('Measure')
lenMeasures = len(gobcM)
lastTs = None
while i <= lenMeasures:
mI = inStream.measure(i, ignoreNumbers=True)
if len(mI.flat.notesAndRests) == 0:
if i == 0:
pass
else:
break
else:
m = stream.Measure()
m.number = i
mIchord = mI.chordify()
newPart = self.reduceMeasureToNChords(mIchord, maxChords, weightAlgorithm=self.qlbsmpConsonance, trimBelow = 0.3)
#newPart.show('text')
cLast = None
cLastEnd = 0.0
for cEl in newPart:
cElCopy = copy.deepcopy(cEl)
if 'Chord' in cEl.classes:
if closedPosition is not False:
if forceOctave is not False:
cElCopy.closedPosition(forceOctave = forceOctave, inPlace = True)
else:
cElCopy.closedPosition(inPlace=True)
cElCopy.removeRedundantPitches(inPlace=True)
newOffset = cEl.getOffsetBySite(newPart)
# extend over gaps
if cLast is not None:
if round(newOffset - cLastEnd, 6) != 0.0:
cLast.quarterLength += newOffset - cLastEnd
cLast = cElCopy
cLastEnd = newOffset + cElCopy.quarterLength
m._insertCore(newOffset, cElCopy)
tsContext = mI.parts[0].getContextByClass('TimeSignature')
if tsContext is not None:
if round(tsContext.barDuration.quarterLength - cLastEnd, 6) != 0.0:
cLast.quarterLength += tsContext.barDuration.quarterLength - cLastEnd
m.elementsChanged()
# add ties
if lastPitchedObject is not None:
firstPitched = m[0]
if lastPitchedObject.isNote and firstPitched.isNote:
if lastPitchedObject.pitch == firstPitched.pitch:
lastPitchedObject.tie = tie.Tie("start")
elif lastPitchedObject.isChord and firstPitched.isChord:
if len(lastPitchedObject) == len(firstPitched):
allSame = True
for pitchI in range(len(lastPitchedObject)):
if lastPitchedObject.pitches[pitchI] != firstPitched.pitches[pitchI]:
allSame = False
if allSame is True:
lastPitchedObject.tie = tie.Tie('start')
lastPitchedObject = m[-1]
sourceMeasureTs = mI.parts[0].getElementsByClass('Measure')[0].timeSignature
if sourceMeasureTs != lastTs:
m.timeSignature = copy.deepcopy(sourceMeasureTs)
lastTs = sourceMeasureTs
p._appendCore(m)
if self.printDebug == True:
print(i, " ", end="")
if i % 20 == 0 and i != 0:
print("")
i += 1
p.elementsChanged()
p.getElementsByClass('Measure')[0].insert(0, p.bestClef(allowTreble8vb=True))
p.makeNotation(inPlace=True)
return p
