multirecord.py

multirecord.py

import sound
import ui
from math import floor



class RecorderView(ui.View):
	'''simple metering view, attached to a recorder'''
	def __init__(self, filename, callback=None, *args,**kwargs):
		ui.View.__init__(self,*args,**kwargs)
		self.r=sound.Recorder(filename)
		self.filename=filename
		self.callback=callback
		self.p=ui.Path()
		self.bg_color='yellow'
		self.add_subview(ui.Label(frame=self.bounds,name='lbl'))
		self['lbl'].text=self.filename
	@ui.in_background
	def start(self):
		self['lbl'].text=self.filename+'(REC)'
		self.r.record()
	@ui.in_background
	def stop(self):
		self.r.stop()
		self['lbl'].text=self.filename
		self.p=ui.Path()
		#do something here... voice recog
		if callable(self.callback):
			self.callback(self.filename)
	def draw(self):
		y=self.r.meters['average'][0]
		self.p.line_to(self.r.current_time*100,(-y))
		self.p.stroke()

H=50
class MultiRecorder(ui.View):
	'''start multiple, parallel recorders, iverlapping in time.
	record time will be at least T seconds, but maybe longer depending on processing.  do processing in a thread'''
	def __init__(self,Nrecorders=3, T=3):
		self.r=[RecorderView('test'+str(i)+'.m4a',callback=self.callback, frame=(0,H+i*H,100*T,44)) for i in range(Nrecorders)]
		for r in self.r:
			self.add_subview(r)
		self.N=Nrecorders
		self.update_interval=1/60
		self.idx=0 #next recorder to stop
		self.cycle_frames=floor(T/self.update_interval/(Nrecorders-1))
		self.t=0 # next 
		self.add_subview(ui.Label(frame=(0,0,400,H),name='status'))
	def will_close(self):
		[r.stop() for r in self.r]
	def callback(self,filename):
		'''override to do speech processing'''
		self['status'].text='[processing]'+filename
	def update(self):
		if self.t%self.cycle_frames==0:
			self.r[self.idx-1].start()
			self.r[self.idx].stop()
			# do something with 'test'+str(i)+'.wav'		
			self.idx=(self.idx+1)%self.N
		for r in self.r:
			r.set_needs_display()
		
		self.t+=1
v=MultiRecorder()
v.frame=(0,0,500,400)
v.bg_color='white'
v.present('sheet')