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MIDorI.py
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#Name: Ajay Kristipati
#Andrew ID: akristip
import sys, pygame
from Tkinter import *
import tkFileDialog as filedialog
import random
import midi
import generator
import albumArt
from PIL import Image, ImageTk
import os
def findFirstNonEmptyTrack(): #finds the first track with notes in it
pat = midi.read_midifile(c.d.inputFile.get())
for track in xrange(len(pat)):
if not isEmptyTrack(track,pat):
return track
else: return -1
#checks if track is empty
def isEmptyTrack(track, pat):
for event in pat[track]:
if type(event) == type(midi.NoteOnEvent(tick=0, channel=0,\
data=[0, 0])):
return False
return True
def getInputFile(): #gets the file to seed markov chain
fpath=filedialog.askopenfilename(filetypes = (("MIDI Files", "*.mid")\
,("All files", "*.*") ))
#replaces text
c.d.inputPathEntry.delete(0,END)
c.d.inputPathEntry.insert(0,fpath)
c.d.inputFile.set(fpath)
#resets track number
if(fpath != ''):
c.d.track.set(findFirstNonEmptyTrack())
def getOutputFile(): #gets file to output music to
fpath=filedialog.asksaveasfilename(defaultextension='.mid', filetypes =\
(("MIDI Files","*.mid"),("All Files","*.*")))
c.d.outputPathEntry.delete(0,END)
c.d.outputPathEntry.insert(0,fpath)
c.d.outputFile.set(fpath)
def initVariables(root):
c.d.inputFile=StringVar() #input Filename
c.d.outputFile=StringVar() #output Filename
#list of instruments
c.d.instruments={'Piano':1,'Glockenspiel':10,'Music Box':11,'Organ':17,\
'Acoustic Guitar':25,'Distortion Guitar':31,'Harp':46,\
'Violin':41,'Trumpet':57}
c.d.instrumentName=StringVar() #name of instrument
c.d.instrumentName.set('Harp')
c.d.instrument=IntVar() #instrument number
c.d.instrument.set(46) #Harp
c.d.chainLength=IntVar()#length of markov chain
c.d.chainLength.set(4)
c.d.songLength=IntVar()#length of output
c.d.defaultSongLength=200
c.d.songLength.set(c.d.defaultSongLength)
c.d.tempo=IntVar()#tempo
c.d.tempo.set(120)#midi standard tempo defaults at 120
c.d.track=IntVar() #track to input notes from
c.d.track.set(1)
def init(root): #Sets up UI and global vars
initVariables(root) #sets up variables
#sets up gui
Label(root, text="Input Path: ").grid(row=0)
Label(root, text="Output Path: ").grid(row=1)
c.d.inputPathEntry=Entry(root,textvariable=c.d.inputFile)
c.d.outputPathEntry=Entry(root,textvariable=c.d.outputFile)
c.d.inputPathEntry.grid(row=0, column=1)
c.d.outputPathEntry.grid(row=1, column=1)
inFileGetButton=Button(root, text="Open MIDI File", command=getInputFile)
inFileGetButton.grid(row=0,column=2)
outFileGetButton=Button(root, text="Save Path", command=getOutputFile)
outFileGetButton.grid(row=1,column=2)
c.d.inputPlayButton=Button(root, text="Play", command=playInput)
c.d.inputPlayButton.grid(row=0,column=3)
c.d.outputPlayButton=Button(root, text="Play", command=playOutput)
c.d.outputPlayButton.grid(row=1,column=3)
c.d.optionsButton=Button(root, text='Options', command=openOptions)
c.d.optionsButton.grid(row=2,column=2,columnspan=2)
c.d.generateButton=Button(root, text='Generate', command=generate)
c.d.generateButton.grid(row=2,columnspan=2)
def generate():
chainLength=c.d.chainLength.get() #Get variables
songLength=c.d.songLength.get()
filename=c.d.inputFile.get()
outputPath=c.d.outputFile.get()
tracknum=c.d.track.get()
instrument=c.d.instrument.get()
tempo=c.d.tempo.get()
inPattern=midi.read_midifile(filename) #check if track is empty
if isEmptyTrack(tracknum,inPattern):
tracknum = findFirstNonEmptyTrack()
c.d.track.set(tracknum)
generator.generate(chainLength,songLength,filename,outputPath,tracknum,\
instrument,tempo) #generate song
outPattern=midi.read_midifile(outputPath) #generate Art
trk=outPattern[0]
generator.outputNotes(trk,'Onotes.txt')
albumArt.createAlbumArt('Onotes.txt')
pic=Image.open('art.png')
art=ImageTk.PhotoImage(pic)
c.d.artWindow=Label(image=art)
c.d.artWindow.grid(row=3,columnspan=4)
c.d.artWindow.image=art
def openOptions(): #Options window UI
top=Toplevel()
Label(top, text="Chain Length: ").grid(row=0)
Label(top, text="Instrument: ").grid(row=1)
Label(top, text="Song Length: ").grid(row=2)
Label(top, text="Tempo: ").grid(row=3)
Label(top, text="Input Track: ").grid(row=4)
lengths=range(2,10) #possible chain lengths
c.d.chainLengthPicker=apply(OptionMenu,(top,c.d.chainLength)+tuple(lengths))
c.d.chainLengthPicker.grid(row=0,column=1)
instruments=c.d.instruments.keys()
c.d.instrumentPicker=OptionMenu(top,c.d.instrumentName,*instruments,\
command=setInstrument)
c.d.instrumentPicker.grid(row=1,column=1)
c.d.songLengthPicker=Entry(top,textvariable=c.d.songLength,\
validatecommand=validateLength)
c.d.songLengthPicker.grid(row=2,column=1)
c.d.tempoPicker=Entry(top,textvariable=c.d.tempo,\
validatecommand=validateTempo)
c.d.tempoPicker.grid(row=3,column=1)
tracks=[1] #default track
if(c.d.inputFile.get() !=''):
pat=midi.read_midifile(c.d.inputFile.get())
tracks=range(len(pat))
c.d.trackPicker=apply(OptionMenu,(top,c.d.track)+tuple(tracks))
c.d.trackPicker.grid(row=4,column=1)
def setInstrument(instrument):#called by options menu
c.d.instrument.set(c.d.instruments[instrument])
def validateLength(): #restricts song length
if c.d.songLength.get() not in range(16,2048):
c.d.songLength.set((c.d.defaultSongLength)) #default song length
return False
return True
def validateTempo(): #restrics tempo
if c.d.tempo.get() not in range(16,1024):
c.d.tempo.set(120)# default tempo
return False
return True
def playInput(): #plays the input midi
fpath=c.d.inputFile.get()
if not fpath=='' and ('.mid' in fpath): #makes sure file is valid
pygame.mixer.music.load(fpath)
pygame.mixer.music.play()
c.d.inputPlayButton['text']="Stop"
c.d.inputPlayButton['command']=stopInput
def stopInput(): #stops playing input midi
pygame.mixer.music.stop()
c.d.inputPlayButton['text']="Play"
c.d.inputPlayButton['command']=playInput
def playOutput(): #plays output midi
fpath=c.d.outputFile.get()
if not fpath=='' and ('.mid' in fpath): #makes sure file is chosen
pygame.mixer.music.load(fpath)
pygame.mixer.music.play()
c.d.outputPlayButton['text']="Stop"
c.d.outputPlayButton['command']=stopOutput
def stopOutput(): #stops playing output midi
pygame.mixer.music.stop()
c.d.outputPlayButton['text']="Play"
c.d.outputPlayButton['command']=playOutput
def run():
# create the root and the canvas
global c
root=Tk()
c=Canvas(root, width=600, height=400)
# Set up c data and call init
class Struct: pass
c.d=Struct()
init(root)
# set up events
c.d.root=root
# and launch the app
root.mainloop()
pygame.mixer.music.stop()
def cleanUp():
if os.path.isfile('art.png'):
os.remove('art.png')
if os.path.isfile('notes.txt'):
os.remove('notes.txt')
if os.path.isfile('Onotes.txt'):
os.remove('Onotes.txt')
def testIsEmptyTrack():
pat1 = midi.read_midifile('tests/trk15empty.mid')
assert(isEmptyTrack(15,pat1) == True)
pat2 = midi.read_midifile('tests/empty.mid')
assert(isEmptyTrack(0,pat2) == True)
pat3 = midi.read_midifile('tests/notEmpty.mid')
assert(isEmptyTrack(1,pat3)== False)
def testFindFirstNonEmptyTrack():
c.d.inputFile.set('tests/trk15empty.mid')
assert(findFirstNonEmptyTrack() == 1)
c.d.inputFile.set('tests/empty.mid')
assert(findFirstNonEmptyTrack() == -1)
c.d.inputFile.set('tests/noTempo.mid')
assert(findFirstNonEmptyTrack() == 0)
def testAll():
testIsEmptyTrack()
testFindFirstNonEmptyTrack()
pygame.init()
run()
cleanUp()