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from Tkinter import *
import csnd6
import math
import time
playpos = 0.55
recpos = 0.45
def Mod12(val):
while val >= 12:
val = val - 12
while val < 0:
val = val + 12
return val
class Application(Frame):
def translate(self,val):
res = 440.0*math.pow(2, (val-69.0)/12.0)
return res
def play(self,event):
base = 60 - ((self.keys/2)/7)*12
note = event.widget.find_withtag("current")[0]
for i in range(1,len(self.notes),2):
if note == self.notes[i]:
val = self.notes[i-1]
freq = self.translate(val+base)
self.perf.InputMessage("i1.1 0 -1 5000 %f" % freq)
if(self.recording):
self.clockstart()
self.st = time.time()
ti = time.time() - self.time
self.cur = [ti,0, freq]
def stop(self,event):
base = 60 - ((self.keys/2)/7)*12
note = event.widget.find_withtag("current")[0]
for i in range(1,len(self.notes),2):
if note == self.notes[i]:
val = self.notes[i-1]
freq = self.translate(val+base)
self.perf.InputMessage("i-1.1 0 1 5000 %f" % freq)
if(self.recording):
dur = time.time() - self.st
self.cur[1] = dur
self.notesrec.append(self.cur)
def playstop(self,event):
if not self.recording:
if not self.playing:
self.playing = True
self.canvas.itemconfigure(self.pbutt, fill="red")
self.playback(event)
else:
self.playing = False
self.canvas.itemconfigure(self.pbutt, fill="black")
def playback(self, event):
if not self.recording and self.playing:
for i in self.notesrec:
self.perf.InputMessage("i1 %f %f 5000 %f" % (i[0], i[1], i[2]))
if self.rectime > 0.0:
self.master.after(int(self.rectime*1000), self.playback, event)
else:
self.playstop(event)
else:
self.canvas.itemconfigure(self.pbutt, fill="black")
def clockstart(self):
if self.time == 0.0:
self.time = time.time()
def clockreset(self):
self.rectime = time.time() - self.time
self.time = 0.0
def record(self,event):
if not self.playing:
if not self.recording:
del self.notesrec
self.notesrec = []
self.canvas.itemconfigure(self.rbutt, fill="red")
self.recording = True
else:
self.clockreset()
self.recording = False
self.canvas.itemconfigure(self.rbutt, fill="black")
def createCanvas(self):
self.height = 100
self.keys = 49
self.w = 12
self.size = self.keys*self.w
self.canvas = Canvas(self,height=self.height + 50,width=self.size,bg="white")
self.canvas.pack()
def createKeys(self):
j = 0
m = self.w/4
for i in range(0,self.size, self.w):
item = self.canvas.create_rectangle(i,0,i+self.w,self.height*0.8,fill="yellow")
self.items.append(item)
self.notes.append(j)
self.notes.append(item)
self.canvas.tag_bind(item,"<ButtonPress>", self.play)
self.canvas.tag_bind(item,"<ButtonRelease>", self.stop)
if (Mod12(j) == 4 or Mod12(j) == 11): j += 1
else:
j += 2
j = 0
for i in range(0,self.size, self.w):
if (Mod12(j) == 4 or Mod12(j) == 11): j += 1
else:
item = self.canvas.create_rectangle(i+self.w-m,0,i+self.w+m,self.height*0.5,fill="black")
self.items.append(item)
self.notes.append(j+1)
self.notes.append(item)
self.canvas.tag_bind(item,"<ButtonPress>", self.play)
self.canvas.tag_bind(item,"<ButtonRelease>", self.stop)
j += 2
pos = self.size*playpos
self.pbutt = self.canvas.create_polygon(pos,self.height,pos,self.height+30,pos+30,self.height+15, fill="black")
self.canvas.tag_bind(self.pbutt,"<ButtonPress>", self.playstop)
pos = self.size*recpos
self.rbutt = self.canvas.create_oval(pos,self.height,pos+30,self.height+30, fill="black")
self.canvas.tag_bind(self.rbutt,"<ButtonPress>", self.record)
def quit(self):
self.master.destroy()
self.perf.Stop()
self.perf.Join()
def __init__(self,master=None):
self.time = 0.0
self.rectime = 0.0
self.items = []
self.notes = []
self.notesrec = []
self.recording = False
self.playing = False
Frame.__init__(self,master)
self.pack()
self.createCanvas()
self.createKeys()
self.cs = csnd6.Csound()
res = self.cs.Compile("keys.csd")
self.perf = csnd6.CsoundPerformanceThread(self.cs)
self.perf.Play()
self.master = master
self.master.bind("<space>", self.record)
self.master.bind("<Return>", self.playstop)
self.master.protocol("WM_DELETE_WINDOW", self.quit)
master.title("Keysplay vocoder")
app = Application(Tk())
app.mainloop()
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