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import random
import math
import Utils
import Drunk
import common.Config as Config
from Util.CSoundNote import CSoundNote
from Generation.GenerationConstants import GenerationConstants
from Generation.GenerationRythm import GenerationRythm
from Generation.GenerationPitch import GenerationPitch
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 Config.INSTRUMENTS[currentInstrument].soundClass == '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 = Config.INSTRUMENTS[instrument[pageId][trackId]].kit[drumPitch[0]].name
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, 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 = Config.INSTRUMENTS[instrument[pageId][trackId]].instrumentId
for i in numOfNotes:
if drumPitch:
if ( rand() * fillDrum ) > ( parameters.silence * .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:
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_duration = Utils.scale(parameters.articule, GenerationConstants.ARTICULATION_SCALE_MIN_MAPPING, GenerationConstants.ARTICULATION_SCALE_MAX_MAPPING, GenerationConstants.ARTICULATION_SCALE_STEPS)
table_pitch = GenerationConstants.SCALES[parameters.scale]
for trackId in trackIds:
if trackId == 4: # drum index
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
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 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
parameters.rythmRegularity = 0.5
for drumPitch in GenerationConstants.DRUM_COMPLEXITY4:
pageGenerate( parameters, trackId, pageId, trackOfNotes, drumPitch )
parameters.rythmRegularity = 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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