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792 lines
25 KiB
Python
792 lines
25 KiB
Python
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# patSolo.py
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"""
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This module is an integeral part of the program
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MMA - Musical Midi Accompaniment.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Bob van der Poel <bob@mellowood.ca>
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"""
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import MMA.notelen
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import MMA.translate
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import MMA.harmony
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import MMA.volume
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import MMA.alloc
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import MMA.swing
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import gbl
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from MMA.common import *
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from MMA.pat import PC
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from MMA.keysig import keySig
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import re
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import random
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# Each note in a solo gets a NoteEvent.
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class NoteEvent:
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def __init__(self, pitch, velocity):
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self.duration = None
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self.pitch = pitch
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self.articulation = None
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self.velocity = velocity
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self.defvelocity = velocity
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accValues = {'#': 1, "&":-1, 'n':0}
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##############################
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class Melody(PC):
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""" The melody and solo tracks are identical, expect that
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the solo tracks DO NOT get saved in grooves and are only
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initialized once.
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"""
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vtype = 'MELODY'
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drumType = None
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endTilde = []
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drumTone = 38
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arpRate = 0
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arpDecay = 0
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arpDirection = 'UP'
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def setDrumType(self):
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""" Set this track to be a drum track. """
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if self.channel:
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error("You cannot change a track to DRUM once it has been used")
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self.drumType = 1
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self.setChannel('10')
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def definePattern(self, name, ln):
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error("Melody/solo patterns cannot be defined")
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def setArp(self, ln):
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""" Set the arpeggiate options. """
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notopt, ln = opt2pair(ln, 1)
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if notopt:
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error("%s Arpeggiate: expecting cmd=opt pairs, not '%s'." \
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% (self.name, ' '.join(notopt) ))
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for cmd, opt in ln:
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if cmd == 'RATE':
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if opt == '0' or opt == 'NONE':
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self.arpRate = 0
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else:
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self.arpRate = MMA.notelen.getNoteLen(opt)
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elif cmd == 'DECAY':
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v = stof(opt, "Mallet Decay must be a value, not '%s'" % opt)
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if v < -50 or v > 50:
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error("%s Arpeggiate: Decay rate must be -50..+50" % \
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self.name )
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self.arpDecay = v/100
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elif cmd == 'DIRECTION':
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valid = ("UP", "DOWN", "BOTH", "RANDOM")
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if opt not in valid:
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error("%s Arpeggiate Direction: Unknown setting '%s', use %s."\
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% (self.name, opt, ', '.join(valid)))
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self.arpDirection = opt
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def restart(self):
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self.ssvoice = -1
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def setTone(self, ln):
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""" A solo track can have a tone, if it is DRUMTYPE."""
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if not self.drumType:
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error("You must set a Solo track to DrumType before setting Tone")
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if len(ln) > 1:
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error("Only 1 value permitted for Drum Tone in Solo tracks")
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self.drumTone = MMA.translate.dtable.get(ln[0])
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def xswingIt(self, notes):
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""" Adjust an entire bar of chords for swingmode.
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Check each chord in the array of chords for a bar for
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successive 8ths on & off the beat. If found, the first is
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converted to 'long' 8th, the 2nd to a 'short'
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and the offset for the 2nd is adjusted to comp. for the 'long'.
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If there is a spurious offset between an on/off beat that pair
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will NOT be adjusted. Nor sure if that is right or not?
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Only called from getLine(), separate for sanity.
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"""
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len8 = MMA.notelen.getNoteLen('8')
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len81 = MMA.notelen.getNoteLen('81')
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len82 = MMA.notelen.getNoteLen('82')
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all8 = set([len8])
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onBeats = [ x * gbl.BperQ for x in range(gbl.QperBar)]
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nl = sorted(notes) # list of offsets
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for i in range(len(nl)-1):
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# Check for successive note event offsets on 8th note positions
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if nl[i] in onBeats and nl[i+1] == nl[i]+len8:
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beat0 = nl[i]
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beat1 = nl[i+1]
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# check that all notes are 8ths by comparing a set of all
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# the durations in both offsets with set([len8])
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if set([nev.duration for nev in notes[beat0]+notes[beat1] ]) == all8:
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# lengthen notes on-the-beat
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for nev in notes[beat0]:
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nev.duration = len81
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nev.velocity *= MMA.swing.accent1
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nev.defvelocity *= MMA.swing.accent1
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# shorten notes off-the-beat
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for nev in notes[beat1]:
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nev.duration = len82
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nev.velocity *= MMA.swing.accent2
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nev.defvelocity *= MMA.swing.accent2
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# move off-beat list back
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notes[beat0+len81] = notes[beat1]
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del notes[beat1]
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return notes
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def getChord(self, c, velocity, isdrum):
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""" Extract a set of notes for a single beat.
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This is a function just to make getLine() a bit shorter
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and more readble.
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"""
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c = re.split("[, ]+", c)
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if not c:
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error("You must specify the first note in a solo line")
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""" Convert the note part into a series of midi values
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Notes can be a single note, or a series of notes. And
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each note can be a letter a-g (or r), a '#,&,n' plus
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a series of '+'s or '-'s. Drum solos must have each
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note separated by ' ' or ','s: "Snare1,KickDrum1,44".
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Each chunk could be:
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- a midi value (44)
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- a drum note ( KickDrum1)
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- a single note (g#) (g&-)
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- Or groups with spaces/commas (f 100) (44 , KickDrum) (a,b c)
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"""
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events = [] # array for each note event
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for cc in c:
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if not cc or not cc[0]:
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continue
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if '/' in cc:
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if cc.count('/') > 1:
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error("%s: Only 1 '/velocity' permitted. You can separate " \
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"notes in the chord with ',' or ' ' and it'll work." % \
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self.name)
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cc, newvel = cc.split('/')
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if not newvel:
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error("%s: expecting 'volume' after '/'" % self.name)
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if not cc:
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error("%s: Volume '/' must immediately follow note." % self.name)
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thisvel = stoi(newvel)
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if thisvel < 0 or thisvel > 127:
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error("%s: Velocity must be 0..127, not '%s'." % (self.name, newvel))
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else:
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thisvel = velocity
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if cc[0] == 'r':
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if events or len(cc) > 1:
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error("%s: Rests and notes cannot be combined." % self.name)
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else:
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events.append( NoteEvent(None, 0)) # note event with no pitch
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elif cc[0] in "1234567890":
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n = stoi(cc, "%s: Note values must be integer or literal." % \
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self.name)
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if n<0 or n>127:
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error("%s: Midi notes must be 0..127, not '%s'" % \
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(self.name, n))
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# if using value we fake-adjust octave,
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# it (and transpose) is set later.
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if not isdrum:
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n -= self.octave[self.seq]
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events.append(NoteEvent(n, thisvel))
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elif isdrum: # drum must be a value, * or drum-name
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if cc == '*':
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events.append( NoteEvent(self.drumTone, thisvel ))
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else:
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events.append( NoteEvent(int(MMA.translate.dtable.get(cc)), thisvel) )
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else: # must be a note(s) in std. notation
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cc = list(cc)
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while cc:
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name = cc.pop(0)
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if not name in self.midiNotes:
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error("%s: Encountered illegal note name '%s'"
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% (self.name, name))
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n = self.midiNotes[ name ] # name is string, n is value
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# Parse out a "#', '&' or 'n' accidental.
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if cc and cc[0] in accValues:
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i = cc.pop(0)
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self.acc[name] = accValues[i]
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n += self.acc[name] # accidental adjust (from above or keysig)
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# Parse out +/- (or series) for octave
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while cc and cc[0] in '+-':
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a = cc.pop(0)
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if a == '+':
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n += 12
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else:
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n -= 12
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events.append( NoteEvent(n, thisvel) )
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return events
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def getLine(self, pat):
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""" Extract a melodyline for solo/melody tracks.
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This is only called from trackbar(), but it's nicer
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to isolate it here.
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RETURNS: notes structure. This is a dictionary. Each key represents
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an offset in MIDI ticks in the current bar. The data for
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each entry is an array of note events:
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notes[offset] - [nev [,...] ] See top of file for noteEvent()
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class which sets the fields.
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"""
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sc=self.seq
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savedSpecial = None
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""" Get a COPY of the keysignature note table (a dict).
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As a bar is processed the table is updated. There is one flaw here---in
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real music an accidental for a note in a give octave does not
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effect the following same-named notes in different octaves.
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In this routine IT DOES.
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"""
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self.acc=keySig.accList.copy()
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# list of notename to midivalues
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self.midiNotes = {'c':0, 'd':2, 'e':4, 'f':5, 'g':7, 'a':9, 'b':11, 'r':None }
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""" The initial string is in the format "1ab;4c;;4r;". The trailing
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';' is important and needed. If we don't have this requirement
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we can't tell if the last note is a repeat of the previous. For
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example, if we have coded "2a;2a;" as "2a;;" and we didn't
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have the 'must end with ;' rule, we end up with "2a;" and
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then we make this into 2 notes...or do we? Easiest just to
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insist that all bars end with a ";".
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"""
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if not pat.endswith(';'):
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error("All Solo strings must end with a ';'")
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barEnd = gbl.BperQ*gbl.QperBar # end of bar in ticks
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duration = MMA.notelen.getNoteLen('4') # default note length
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velocity = 90 # intial/default velocity for solo notes
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articulation = 1 # additional articulation for solo notes
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notes={} # NoteEvent list, keys == offset
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if self.drumType:
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isdrum = 1
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lastc = str(self.drumTone)
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else:
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isdrum = None
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lastc = '' # last parsed note
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# convert pat to a list
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pat = [x.strip() for x in pat.split(';')[:-1]]
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# set initial offset into bar. This compensates for the previous
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# bar ending in a ~ and this one starting with ~.
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# This special case bumps the initial bar offset
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if pat[0].startswith("~"):
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if not self.endTilde or self.endTilde[1] != gbl.tickOffset:
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error("Previous line did not end with '~'")
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else:
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pat[0] = pat[0][1:].strip()
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offset = self.endTilde[0]
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else:
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offset = 0
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lastOffset = None
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# Strip off trailing ~. This permits long notes to end past the
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# current barend. Note, flag set for the next bar to test for
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# a leading ~.
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if pat[-1].endswith("~"):
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self.endTilde = [1, gbl.tickOffset + (gbl.BperQ * gbl.QperBar) ]
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pat[-1] = pat[-1][:-1].strip()
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else:
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self.endTilde = []
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##################################################
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# Now we can parse each chunk of the solo string.
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for a in pat:
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""" If we find a "<>" we just ignore that. It's useful when
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multiple continuation bars are needed with ~.
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"""
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accentVol = None
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accentDur = None
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if a == '<>':
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savedSpecial = None
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continue
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""" Next, strip out all '<SPECIAL=xx>' settings.
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VOLUME: If no option is set, we assume VOLUME. The default
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velocity setting was set before the loop (==90) and is
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changed here for the duration of the current bar/riff.
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The set velocity will still be modified by the global
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and track volume adjustments.
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DURATION: Duration or articulation setting is defaulted to 100.
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Changing it here will do so for the duration of the
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bar/riff. Note, the track ARTICULATION is still applied.
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OFFSET: change the current offset into the bar. Can be negative
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which forces overlapping notes.
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"""
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a, vls = pextract(a, "<", ">")
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if vls:
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if len(vls) > 1:
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error("Only 1 <modifier> is permitted per note-set")
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vls = vls[0].split(',')
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for vv in vls:
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vv = vv.upper().strip()
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if vv == '..':
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savedSpecial = [','.join(vls)]
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continue
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if not '=' in vv:
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vv = "VOLUME=" + vv
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vc,vo = vv.split('=', 1) # note: it's already uppercase!
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if vc == 'VOLUME':
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if vo in MMA.volume.vols: # arg was a volume 'FF, 'mp', etc.
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velocity *= MMA.volume.vols[vo]
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else:
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error("%s: No volume '%s'." % (self.name, vo))
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elif vc == 'OFFSET':
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offset = stoi(vo, "%s: Offset expecting integer, not %s." \
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% (self.name, vo))
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if offset < 0:
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error("%s: Offset must be positive." % self.name)
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if offset >= barEnd:
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error("%s: Offset has been set past the end of the bar." \
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% self.name )
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elif vc == 'ARTICULATE':
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articulation = stoi(vo, "%s: Articulation expecting integer,"
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" not %s." % (self.name, vo))
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if articulation < 1 or articulation >200:
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error("%s: Articulation must be 1..200, not %s." % \
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(self.name, vo) )
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articulation /= 100.
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else:
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error("%s: Unknown command '%s'." % (self.name, vv))
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if offset >= barEnd:
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error("Attempt to start Solo note '%s' after end of bar" % a)
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""" Split the chord chunk into a note length and notes. Each
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part of this is optional and defaults to the previously
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parsed value.
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"""
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i = 0
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while i < len(a):
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if not a[i] in '1234567890.+tT':
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break
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else:
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i += 1
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if i:
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l=MMA.notelen.getNoteLen(a[0:i].replace(' ', '') )
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a = a[i:].strip()
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else:
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l=duration
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duration = l # save last duration for next loop
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# next item might be an accent string.
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i = 0
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while i < len(a):
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if not a[i] in "!-^&":
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break
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else:
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i += 1
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if i:
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c = a[0:i]
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accentVol = 1
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accentDur = 1
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accentDur -= c.count('!') * .2
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accentDur += c.count('-') * .2
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accentVol += c.count('^') * .2
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accentVol -= c.count('&') * .2
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if accentDur<.1: accentDur = .1
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if accentDur>2: accentDur = 2
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if accentVol<.1: accentVol = .1
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if accentVol>2: accentVol = 2
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a = a[i:]
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# Now we get to look at pitches.
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if not a or a=='' or a==' ':
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a=lastc
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evts = self.getChord(a, velocity, isdrum) # get chord
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for e in evts:
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e.velocity = self.adjustVolume(e.defvelocity, offset)
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if accentVol:
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e.velocity *= accentVol
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e.duration = duration
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if accentDur:
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e.articulation = articulation * accentDur
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else:
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e.articulation = articulation
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lastc = a # save last chord for next loop
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# add note event(s) to note{}
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if not offset in notes:
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notes[offset] = []
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notes[offset].extend(evts)
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lastOffset = offset
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offset += l
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if offset <= barEnd:
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if self.endTilde:
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error("Tilde at end of bar has no effect")
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else:
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if self.endTilde:
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self.endTilde[0]=offset-barEnd
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else:
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warning("%s, end of last note overlaps end of bar by %2.3f "
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"beat(s)." % (self.name, (offset-barEnd)/float(gbl.BperQ)))
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if MMA.swing.mode:
|
|
notes = MMA.swing.swingSolo(notes)
|
|
|
|
return notes
|
|
|
|
|
|
def addHarmony(self, notes, ctable):
|
|
""" Add harmony to solo notes. """
|
|
|
|
sc=self.seq
|
|
|
|
harmony = self.harmony[sc]
|
|
harmOnly = self.harmonyOnly[sc]
|
|
|
|
|
|
for offset in notes:
|
|
nn = notes[offset]
|
|
|
|
if len(nn) == 1 and nn[0].pitch != None:
|
|
tb = self.getChordInPos(offset, ctable)
|
|
|
|
if tb.chordZ:
|
|
continue
|
|
|
|
h = MMA.harmony.harmonize(harmony, nn[0].pitch, tb.chord.bnoteList)
|
|
|
|
duration = nn[0].duration
|
|
articulation = nn[0].articulation
|
|
velocity = nn[0].defvelocity
|
|
|
|
if harmOnly: # remove melody note if harmony only
|
|
nn.pop(0) # DON'T use nn=[] that would release the ptr.
|
|
|
|
for n in h:
|
|
e = NoteEvent(n,
|
|
self.adjustVolume(velocity * self.harmonyVolume[sc], offset))
|
|
e.duration = duration
|
|
e.articulation = articulation
|
|
nn.append(e)
|
|
|
|
|
|
def trackBar(self, pat, ctable):
|
|
""" Do the solo/melody line. Called from self.bar() """
|
|
|
|
notes = self.getLine(pat)
|
|
sc=self.seq
|
|
|
|
if self.harmony[sc] and not self.drumType:
|
|
self.addHarmony(notes, ctable)
|
|
|
|
unify = self.unify[sc]
|
|
|
|
rptr = self.mallet
|
|
|
|
for offset in sorted(notes.keys()):
|
|
nn=notes[offset]
|
|
strumOffset = 0
|
|
|
|
if self.arpRate:
|
|
self.trackArp(nn, offset)
|
|
continue
|
|
|
|
for nev in nn:
|
|
n = nev.pitch
|
|
if n == None: # skip rests
|
|
continue
|
|
|
|
if not self.drumType: # no octave/transpose for drums
|
|
n = self.adjustNote(n)
|
|
self.sendNote(offset + strumOffset,
|
|
self.getDur(int(nev.duration * nev.articulation)),
|
|
n, self.adjustVolume(nev.velocity, offset) )
|
|
strumOffset += self.getStrum(sc)
|
|
|
|
|
|
def trackArp(self, nn, offset):
|
|
""" Special trackbar() for arpeggiator. """
|
|
|
|
if self.drumType:
|
|
error("%s Arpeggiate: Incompatible with DRUMTYPE. Try MALLET?" % self.name)
|
|
|
|
notes = [ [self.adjustNote(x.pitch), x.velocity] for x in nn]
|
|
notes.sort()
|
|
|
|
random = self.direction == 'RANDOM'
|
|
|
|
if self.arpDirection == "DOWN":
|
|
notes.reverse()
|
|
|
|
elif self.arpDirection == "BOTH":
|
|
z=notes[:]
|
|
z.reverse()
|
|
notes.extend(z[1:-1])
|
|
|
|
duration = self.arpRate # duration of each note
|
|
count = nn[0].duration / duration # total number to play
|
|
if count < 1:
|
|
count = 1
|
|
|
|
while 1:
|
|
nn = range(len(notes))
|
|
if random:
|
|
random.randomize(nn)
|
|
for i in nn:
|
|
n = notes[i]
|
|
|
|
self.sendNote(offset,
|
|
self.getDur(duration), n[0],
|
|
self.adjustVolume(n[1], offset) )
|
|
count -= 1
|
|
if not count:
|
|
break
|
|
|
|
offset += duration
|
|
|
|
if self.arpDecay:
|
|
n[1] = int(n[1] + (n[1] * self.arpDecay))
|
|
if n[1] < 1: n[1] = 1
|
|
if n[1] > 127: n[1] = 127
|
|
|
|
|
|
if not count:
|
|
break
|
|
|
|
|
|
|
|
class Solo(Melody):
|
|
""" Pattern class for a solo track. """
|
|
|
|
vtype = 'SOLO'
|
|
|
|
|
|
# Grooves are not saved/restored for solo tracks.
|
|
|
|
def restoreGroove(self, gname):
|
|
self.setSeqSize()
|
|
|
|
def saveGroove(self, gname):
|
|
pass
|
|
|
|
|
|
#######################
|
|
|
|
""" When solos are included in a chord/data line they are
|
|
assigned to the tracks listed in this list. Users can
|
|
change the tracks with the setAutoSolo command.
|
|
"""
|
|
|
|
autoSoloTracks = [ 'SOLO', 'SOLO-1', 'SOLO-2', 'SOLO-3' ]
|
|
|
|
|
|
def setAutoSolo(ln):
|
|
""" Set the order and names of tracks to use when assigning
|
|
automatic solos (specified on chord lines in {}s).
|
|
"""
|
|
|
|
global autoSoloTracks
|
|
|
|
if not len(ln):
|
|
error("You must specify at least one track for autosolos")
|
|
|
|
autoSoloTracks = []
|
|
for n in ln:
|
|
n=n.upper()
|
|
MMA.alloc.trackAlloc(n, 1)
|
|
if gbl.tnames[n].vtype not in ('MELODY', 'SOLO'):
|
|
error("All autotracks must be Melody or Solo tracks, not %s"\
|
|
% gbl.tnames[n].vtype)
|
|
|
|
autoSoloTracks.append(n)
|
|
|
|
if gbl.debug:
|
|
print "AutoSolo track names:",
|
|
for a in autoSoloTracks:
|
|
print a,
|
|
print
|
|
|
|
|
|
|
|
###############
|
|
|
|
|
|
def extractSolo(ln, rptcount):
|
|
""" Parser calls this to extract solo strings. """
|
|
|
|
a = ln.count('{')
|
|
b = ln.count('}')
|
|
|
|
if a != b:
|
|
error("Mismatched {}s for solo found in chord line")
|
|
|
|
if a:
|
|
if rptcount > 1:
|
|
error("Bars with both repeat count and solos are not permitted")
|
|
|
|
ln, solo = pextract(ln, '{', '}')
|
|
|
|
if len(solo) > len(autoSoloTracks):
|
|
error("Too many melody/solo riffs in chord line. %s used, "
|
|
"only %s defined" % (len(solo), len(autoSoloTracks)) )
|
|
|
|
|
|
firstSolo = solo[0][:] # save for autoharmony tracks
|
|
|
|
""" We have the solo information. Now we loop though each "solo" and:
|
|
1. Ensure or Create a MMA track for the solo
|
|
2. Push the solo data into a Riff for the given track.
|
|
"""
|
|
|
|
for s, trk in zip(solo, autoSoloTracks):
|
|
if not s: continue # skip placeholder/empty tracks
|
|
MMA.alloc.trackAlloc(trk, 1)
|
|
t = gbl.tnames[trk]
|
|
if t.riff:
|
|
error("%s: Attempt to add {} solo when the track "
|
|
"has pending RIFF data." % t.name)
|
|
t.setRiff( s.strip() )
|
|
|
|
""" After all the solo data is interpreted and sent to the
|
|
correct track, we check any leftover tracks. If any of these
|
|
tracks are empty of data AND are harmonyonly the note
|
|
data from the first track is interpeted again for that
|
|
track. Tricky: the max() is needed since harmonyonly can
|
|
have different setting for each bar...this way
|
|
the copy is done if ANY bar in the seq has harmonyonly set.
|
|
"""
|
|
|
|
for t in autoSoloTracks[1:]:
|
|
if t in gbl.tnames and not gbl.tnames[t].riff \
|
|
and max(gbl.tnames[t].harmonyOnly):
|
|
gbl.tnames[t].setRiff( firstSolo[:] )
|
|
|
|
if gbl.debug:
|
|
print "%s duplicated to %s for HarmonyOnly." % (trk, t)
|
|
|
|
return ln
|
|
|