class MidiWriter:
def __init__(self):
# Log frequencies and durations to files. We can then parse these in the autochord class.
self.file = MIDIFile(1)
self.chord_file = MIDIFile(3)
self.rest_length = 0
self.prev_start_time = 0
def add_tempo(self, tempo):
self.file.addTempo(0, 0, tempo)
self.chord_file.addTempo(0, 0, tempo)
def add_midi_note(self, volume, pitch, beat, duration, rest_state, des_len):
if(check_rest(rest_state) == True):
self.rest_length = duration
else:
if(self.prev_start_time != beat):
if(duration + beat < des_len):
self.file.addNote(0, 0, pitch, beat + self.rest_length, duration, volume)
self.prev_start_time = beat + self.rest_length
self.rest_length = 0
def add_midi_chord(self, c, chord_volume, root_n, third_n, fifth_n, chord_beat, chord_duration, desired_length):
if(check_chord(c) == True):
if(chord_duration + chord_beat < desired_length):
self.chord_file.addNote(0, 0, root_n, chord_beat, chord_duration, chord_volume)
self.chord_file.addNote(0, 0, third_n, chord_beat, chord_duration, chord_volume)
self.chord_file.addNote(0, 0, fifth_n, chord_beat, chord_duration, chord_volume)
def write(self):
with open("midi.mid", "wb") as f:
self.file.writeFile(f)
with open("chord_midi.mid", "wb") as f:
self.chord_file.writeFile(f)
def close_midi(self):
self.file.close()
self.chord_file.close()
else:
logging.info('accepted proposal')
result.append(prop_sp)
prev_interval = prop_interval
break
return result
sm = cg.ScaleManager()
cp_scale = sm.build_scale()
midi_content = MIDIFile(2)
midi_content.addTrackName(0, 0, 'cantus firmus')
midi_content.addTrackName(1, 0, 'counterpoint')
cf_tune = cg.Tune(
cp_scale,
['C1', 'D1', 'F1', 'E1', 'F1', 'G1', 'A1', 'G1', 'E1', 'D1', 'C1'])
cp_tune = cg.Tune(cp_scale, real_cp2(cp_scale, cf_tune))
for i, v in enumerate(cf_tune.mps):
midi_content.addNote(0, 0, v, i, 1, 100)
for i, v in enumerate(cp_tune.mps):
midi_content.addNote(1, 0, v, i + 0.25, 1, 100)
with open('c:/temp/test.mid', "wb+") as f:
midi_content.writeFile(f)
midi_content.close()
image = Image.fromarray(imagePix)
# Preview the image if desired
if args.s:
image.show()
# Start our MIDI file.
mFile = MIDIFile(numTracks=1, adjust_origin=True,file_format=1)
# Loop through image
for y in range(newSize[1]):
for x in range(128):
pixel = imagePix[y,x]
if (args.g):
OnPixelGrad(mFile,x,y,pixel,args.y)
else:
OnPixelThresh(mFile,x,y,pixel,args.y,args.t)
# End any notes we had.
for x in range(128):
if (args.g):
OnPixelGrad(mFile,x,newSize[1],0,args.y)
else:
OnPixelThresh(mFile,x,newSize[1],0, args.y,args.t)
# Write out the MIDI file.
midiOut = open(args.output_midi, 'wb')
mFile.writeFile(midiOut)
mFile.close()
class DrumMachine:
# set global tempo will effect everything - no
# tempo changes between cuts just one global tempo
tempo = 0
# holds the cuts which are to be rendered to the midi file
allcuts = []
# the print-out version of the cut ids so the user knows which beat is which number
cutids = []
# holds unique cuts for use with the buildFromArray method
unique = []
# holds unique id for each item of array above
uniqueid = []
# counter for number of allcuts - starts at 1 not 0
globalid = 1
# is incremented everytime a unique pattern is pushed and therefore saved in unique
cutid = 1
# If a new unique cut is made store it in unique and then set newcut to False
# starts at True because first cut is always unique
newcut = True
# temp for patterns being edited
edpad = None
# id for pattern being editing
editing = None
# when editing drum layers
# we can overwrite or add to the layers (discontinued)
overwrite = True
# push copy
pushc = False
# can copy
cancopy = False
def __init__(self):
self.tempo = 120 # default
self.tempcut = None
# Create a Midi file
def createMidi(self):
self.midif = MIDIFile(3)
self.midif.addTempo(0, 0, self.tempo)
# make it so midi file is in memory so it can play without having to save to disk
def createMem(self):
self.memFile = BytesIO()
# Write the Midi file to memory
# and load it into pygame so it can be played
def writeMidiMem(self):
self.midif.writeFile(self.memFile)
self.memFile.seek(0)
pygame.mixer.music.load(self.memFile)
# free memory and close files
def freeMidiMem(self):
## pygame.mixer.music.unload()
self.memFile.close()
self.midif.close()
# create a drum layer of a given type
def drumLayer(self, instr, beat, track, prob, pulse=0, barsin=0):
bars = 4
if self.overwrite == True or self.edpad == None:
drumcut = DrumCutLayer(beat, track)
else:
if instr == Snare and self.edpad.snaredrumlayer != None:
drumcut = self.edpad.snaredrumlayer
else:
drumcut = DrumCutLayer(beat, track)
if instr == BassDrum and self.edpad.bassdrumlayer != None:
drumcut = self.edpad.bassdrumlayer
else:
drumcut = DrumCutLayer(beat, track)
if instr == Toms and self.edpad.tomsdrumlayer != None:
drumcut = self.edpad.tomsdrumlayer
else:
drumcut = DrumCutLayer(beat, track)
if instr != Snare and instr != BassDrum and instr != Toms:
if self.edpad.cymbaldrumlayer != None:
drumcut = self.edpad.cymbaldrumlayer
else:
drumcut = DrumCutLayer(beat, track)
c = b = 0
n = 1
mod4hit = 3
dec4hit = [1, 0.50, 0.25][randrange(0, 3)]
addtovol = 0
if instr == Snare:
addtovol = 20
elif instr == BassDrum:
addtovol = 17
while b < bars:
hitit = randrange(0, prob) + 1
if (pulse != 0 and n % pulse == 0) or (prob > 0 and hitit == 1):
volu = randrange(100 + addtovol, 128)
drumcut.ntimesbeat += [n * beat]
drumcut.volumes += [volu]
drumcut.whathit += [instr[randrange(0, len(instr))]]
c += beat
if c >= 1:
c = 0
b += 1
n += 1
return drumcut
# a CompleteCut is made by layering -- calling drumLayer()
def drumCut(self):
cc = CompleteCut()
cc.bassdrumlayer = self.drumLayer(BassDrum, ranbeat(), 0, hitprob(),
pulseit(6), 1)
cc.snaredrumlayer = self.drumLayer(Snare, snarebeat(), 1, hitprob(),
pulseit(17) - 1, 1)
if randrange(0, 2) == 1:
cc.tomsdrumlayer = self.drumLayer(Toms, tombeat(), 1, hitprob(),
pulseit(7) - 1, 1)
for pc in range(8):
if randrange(0, 8) == 1:
cc.cymbaldrumlayer = self.drumLayer(randomcymbal(), cymbeat(),
2, hitprob(),
pulseit(7) - 1, 1)
self.tempcut = cc
# call after creating midi context
def CreateDrumLayer(self, drumclayer, offset):
if drumclayer == None:
return
for hit in range(len(drumclayer.whathit)):
self.midif.addNote(drumclayer.track, 9, drumclayer.whathit[hit],
drumclayer.ntimesbeat[hit] + (offset * 4), 1,
drumclayer.volumes[hit])
# create midi and memory for it
def createMidiContext(self):
self.createMidi()
self.createMem()
# put midi data into midi file
def makeDemo(self, offset=0):
ccobj = self.tempcut
self.CreateDrumLayer(ccobj.bassdrumlayer, offset)
self.CreateDrumLayer(ccobj.snaredrumlayer, offset)
self.CreateDrumLayer(ccobj.tomsdrumlayer, offset)
self.CreateDrumLayer(ccobj.cymbaldrumlayer, offset)
# calls above function but for consecutive drum patterns
def buildAllCuts(self):
if len(self.allcuts) < 1:
return
for n, cut in enumerate(self.allcuts):
self.tempcut = cut
self.makeDemo((n))
def playDemo(self):
pygame.mixer.music.play()
# stores cut and relevant variables in arrays for later use
def storeCut(self):
if self.pushc == True and self.cancopy == True:
if self.cutid <= len(self.unique):
self.cutid += 1
self.allcuts += [self.tempcut]
self.cutids += [self.cutid]
self.globalid += 1
if self.newcut == True or (self.pushc == True and self.cancopy):
self.unique += [deepcopy(self.tempcut)]
self.uniqueid += [self.cutid]
self.pushc = False
self.newcut = False
if self.pushc == True and self.cancopy == True:
self.newcut = True
# deletes last added pattern
def killCut(self):
if self.globalid > 0:
self.globalid -= 1
del self.allcuts[self.globalid - 1]
del self.cutids[self.globalid - 1]
# saves pattern to disk
def save(self):
if (self.allcuts == []):
return -1
self.buildAllCuts()
self.writeMidiMem()
## try:
outp = filedialog.asksaveasfile(initialdir="/",
mode="wb",
defaultextension=".mid")
if outp is None:
return -1
self.midif.writeFile(outp)
## except:
## return -1
return ""
# format pattern string for output
def formatfp(self):
return "".join([str(x) + ',' for x in self.cutids])[:-1]
# print-out for GUI for how many patterns can be used
def ntoUse(self):
if len(self.unique) < 1:
return "0-0"
else:
return f"1-{len(self.unique)}"
# build pattern from array entered by user
def buildFromArray(self, temp):
if len(self.unique) < 1:
return -1
try:
temp = [int(x) for x in temp.split(',')]
except:
return -1
for i in temp:
if i not in self.uniqueid:
return -1
self.allcuts = []
self.cutids = []
for c in temp:
self.allcuts += [self.unique[c - 1]]
self.cutids += [self.uniqueid[c - 1]]
self.globalid = len(self.allcuts)
self.buildAllCuts()
return 1
# load a pattern to be edited in the pattern editor
def loadForEdit(self, pat):
pat = abs(int(pat))
if len(self.unique) < 1:
return -1
while (pat not in self.uniqueid):
pat -= 1
self.edpad = self.unique[pat - 1]
self.editing = pat
return 1
def editPattern(self, what):
if what == "":
return
if what == "bass":
if self.overwrite == True:
self.edpad.bassdrumlayer = None
self.edpad.bassdrumlayer = self.drumLayer(BassDrum, ranbeat(), 0,
hitprob(), pulseit(4), 1)
elif what == "snare":
if self.overwrite == True:
self.edpad.snaredrumlayer = None
self.edpad.snaredrumlayer = self.drumLayer(Snare, snarebeat(), 1,
hitprob(),
pulseit(3) - 1, 1)
elif what == "toms":
if self.overwrite == True:
self.edpad.tomsdrumlayer = None
if randrange(0, 4) != 0:
self.edpad.tomsdrumlayer = self.drumLayer(
Toms, tombeat(), 1, hitprob(),
pulseit(7) - 1, 1)
elif what == "cym":
if self.overwrite == True:
self.edpad.cymbaldrumlayer = None
for pc in range(8):
if randrange(0, 5) == 1:
self.edpad.cymbaldrumlayer = self.drumLayer(
randomcymbal(), cymbeat(), 2, hitprob(),
pulseit(3) - 1, 1)
def updatePattern(self):
self.unique[self.editing - 1]
self.tempcut = self.unique[self.editing - 1]
