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import random
import math
import Utils
import Drunk
import common.Util.InstrumentDB as InstrumentDB
import common.Config as Config
from common.Util.CSoundNote import CSoundNote
from common.Generation.GenerationConstants import GenerationConstants
from common.Generation.GenerationRythm import GenerationRythm
from common.Generation.GenerationPitch import GenerationPitch
instrumentDB = InstrumentDB.getRef()
class GenerationParameters:
def __init__( self,
density = GenerationConstants.DEFAULT_DENSITY,
rythmRegularity = GenerationConstants.DEFAULT_RYTHM_REGULARITY,
step = GenerationConstants.DEFAULT_STEP,
pitchRegularity = GenerationConstants.DEFAULT_PITCH_REGULARITY,
articule = GenerationConstants.DEFAULT_DURATION,
silence = GenerationConstants.DEFAULT_SILENCE,
rythmMethod = GenerationConstants.DEFAULT_RYTHM_METHOD,
pitchMethod = GenerationConstants.DEFAULT_PITCH_METHOD,
pattern = GenerationConstants.DEFAULT_PATTERN,
scale = GenerationConstants.DEFAULT_SCALE ):
self.density = density
self.rythmRegularity = rythmRegularity
self.step = step
self.pitchRegularity = pitchRegularity
self.articule = articule
self.silence = silence
self.rythmMethod = rythmMethod
self.pitchMethod = pitchMethod
self.pattern = pattern
self.scale = scale
def generator1(
parameters, # algorithm-specific parameters
volume, # [trackId: float(volume) ]
instrument, # [pageId][trackId: instrument]
tempo, # integer bpm
nbeats, # map [ pageId : beats ]
trackIds, # list of trackIds to generate
pageIds, # list of pageIds to generate
trackDictionary, # map [ trackId : [ pageId : events ] ]
nPagesCycle = 4 # META ALGO number of pages in a section
):
makeRythm = GenerationRythm()
makePitch = GenerationPitch()
def makeGainSequence( onsetList ):
gainSequence = []
append = gainSequence.append
rand = random.uniform
max = GenerationConstants.GAIN_MAX_BOUNDARY
midMax = GenerationConstants.GAIN_MID_MAX_BOUNDARY
midMin = GenerationConstants.GAIN_MID_MIN_BOUNDARY
min = GenerationConstants.GAIN_MIN_BOUNDARY
for onset in onsetList:
if onset == 0:
append(rand(midMax, max))
elif ( onset % Config.TICKS_PER_BEAT) == 0:
append(rand(midMin, midMax))
else:
append(rand(min, midMin))
return gainSequence
def makeDurationSequence( onsetList, parameters, table_duration, barLength, currentInstrument ):
durationSequence = []
if instrumentDB.instNamed[currentInstrument].name[0:4] == 'drum':
duration = GenerationConstants.DOUBLE_TICK_DUR / 2
durationSequence = [duration] * len(onsetList)
return durationSequence
append = durationSequence.append
proba = Utils.prob2
if len( onsetList ) > 1:
for i in range(len(onsetList) - 1):
append((onsetList[i+1] - onsetList[i]) * proba( table_duration ))
append(( barLength - onsetList[-1]) * proba( table_duration ))
elif len( onsetList ) == 1:
append( ( barLength - onsetList[0] ) * proba( table_duration ))
return durationSequence
def pageGenerate(parameters, trackId, pageId, trackOfNotes, drumPitch = None):
trackNotes = trackOfNotes
if drumPitch:
currentInstrument = instrumentDB.instNamed[instrument[pageId][trackId]].kit[drumPitch[0]]
rythmSequence = makeRythm.drumRythmSequence(parameters, currentInstrument, barLength)
pitchSequence = makePitch.drumPitchSequence(len(rythmSequence), parameters, drumPitch, table_pitch )
else:
currentInstrument = instrument[pageId][trackId]
rythmSequence = makeRythm.celluleRythmSequence(parameters, barLength, trackId, currentInstrument)
pitchSequence = makePitch.drunkPitchSequence(len(rythmSequence),parameters, table_pitch, trackId)
gainSequence = makeGainSequence(rythmSequence)
durationSequence = makeDurationSequence(rythmSequence, parameters, table_duration, barLength, currentInstrument)
numOfNotes = range(len(rythmSequence))
rand = random.random
append = trackNotes.append
pan = GenerationConstants.DEFAULT_PAN
instrument_id = instrumentDB.instNamed[instrument[pageId][trackId]].instrumentId
for i in numOfNotes:
if drumPitch:
if ( rand() * fillDrum ) > ( parameters.silence[0] * .5 ):
if fillDrum != 1:
if rythmSequence[i] not in trackOnsets or pitchSequence[i] not in trackPitchs:
append( CSoundNote( rythmSequence[i], pitchSequence[i], gainSequence[i], pan, durationSequence[i], trackId, instrument_id, 0.002, 0.098, 0.1, 0, 1000, False, 'edit' ) )
else:
append( CSoundNote( rythmSequence[i], pitchSequence[i], gainSequence[i], pan, durationSequence[i], trackId, instrument_id, 0.002, 0.098, 0.1, 0, 1000, False, 'edit' ) )
else:
if rand() > parameters.silence[trackId]:
append( CSoundNote( rythmSequence[i], pitchSequence[i], gainSequence[i], pan, durationSequence[i], trackId, instrument_id, 0.002, 0.1, 0.1, 0, 1000, False, 'edit' ) )
trackDictionary[ trackId ][ pageId ] = trackNotes
##################################################################################
# begin generate()
table_pitch = GenerationConstants.SCALES[parameters.scale]
for trackId in trackIds:
if trackId == 4: # drum index
table_duration = Utils.scale(parameters.articule[0], GenerationConstants.ARTICULATION_SCALE_MIN_MAPPING, GenerationConstants.ARTICULATION_SCALE_MAX_MAPPING, GenerationConstants.ARTICULATION_SCALE_STEPS)
if parameters.rythmRegularity > 0.75:
streamOfPitch = GenerationConstants.DRUM_COMPLEXITY1
elif parameters.rythmRegularity > 0.5:
streamOfPitch = GenerationConstants.DRUM_COMPLEXITY2
elif parameters.rythmRegularity > 0.25:
streamOfPitch = GenerationConstants.DRUM_COMPLEXITY3
else:
streamOfPitch = GenerationConstants.DRUM_COMPLEXITY4
else:
table_duration = Utils.scale(parameters.articule[trackId], GenerationConstants.ARTICULATION_SCALE_MIN_MAPPING, GenerationConstants.ARTICULATION_SCALE_MAX_MAPPING, GenerationConstants.ARTICULATION_SCALE_STEPS)
selectedPageCount = 0
lastPageId = 0
for pageId in pageIds:
barLength = Config.TICKS_PER_BEAT * nbeats[ pageId ]
trackOfNotes = []
pageCycle = selectedPageCount % nPagesCycle
#if instrument[pageId][trackId][0:4] == 'drum':
if trackId == 4:
if pageCycle not in [0,nPagesCycle-1] and nbeats[pageId] == nbeats[lastPageId]:
trackDictionary[trackId][pageId] = []
for n in trackDictionary[trackId][lastPageId]:
trackDictionary[trackId][pageId].append(n.clone())
elif pageCycle == (nPagesCycle-1) and nbeats[pageId] == nbeats[lastPageId]:
for n in trackDictionary[trackId][lastPageId]:
trackOfNotes.append(n.clone())
trackOnsets = [n.onset for n in trackOfNotes]
trackPitchs = [n.pitch for n in trackOfNotes]
fillDrum = .5
rythmRegTemp = parameters.rythmRegularity[0]
parameters.rythmRegularity[0] = 0.5
for drumPitch in GenerationConstants.DRUM_COMPLEXITY4:
pageGenerate( parameters, trackId, pageId, trackOfNotes, drumPitch )
parameters.rythmRegularity[0] = rythmRegTemp
else:
fillDrum = 1
for drumPitch in streamOfPitch:
pageGenerate( parameters, trackId, pageId, trackOfNotes, drumPitch )
else:
pageGenerate( parameters, trackId, pageId, trackOfNotes, drumPitch = None )
selectedPageCount += 1
lastPageId = pageId
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