Should the following Python code recognize when a .csd has finished 
performing?

  self.timer = False

  if self.w.score_time():
     self.timer = True
  else:
     if self.timer == True:
       self.timer = False
       [now .csd finished; go do something]

w.score_time() is a function from csndsugui which does simply:
return self.csound.GetScoreTime()

The csound.GetScoreTime() function doesn't seem to be doing anything for me. 
My assumption is that after csndsugui's play(self) function starts playing a 
.csd, the above routine would start checking the score time and return to 
zero when the score finishes. Am I mistaken?

Alternately, what are other ways in which Python can know when a .csd has 
come to a normal conclusion?

Art Hunkins

----- Original Message ----- 
From: "Art Hunkins" 
To: 
Sent: Thursday, January 13, 2011 5:02 PM
Subject: csndsugui/python question


>A question mostly for Victor - but any other help greatly appreciated:
>
> The following Python/csndsugui code (for a Sugar-on-a-Stick project of 
> mine)
> works nicely: pressing the callback button  alternates between starting 
> and
> stopping an ongoing .csd performance.
>
> For this particular project, however, the .csd - unlike previous 
> projects - may well
> run to completion, and I'd like to simulate a "callback-button-off press" 
> when the .csd
> ends. (This way the user doesn't need to press the button twice.)
>
> Here's the original code that works:
>
> def playcsd(self, widget):
>   if self.p == False:
>     self.p = True
>     self.w.play()
>     self.but.child.set_label("STOP !")
>     self.but.child.set_use_markup(True)
>     self.but.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0xFFFF, 0, 0))
>     self.but.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0xFFFF, 0, 0))
>   else:
>     self.p = False
>     self.w.recompile()
>     self.w.channels_reinit()
>     self.send_data()
>     self.but.child.set_label("START !")
>     self.but.child.set_use_markup(True)
>     self.but.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0, 0x7700, 0))
>     self.but.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0, 0x7700, 0))
>
>   self.p = False
>   self.but = self.w.cbbutton(self.b7, self.playcsd, "START !")
>   self.but.modify_bg(gtk.STATE_NORMAL, gtk.gdk.Color(0, 0x7700, 0))
>   self.but.modify_bg(gtk.STATE_PRELIGHT, gtk.gdk.Color(0, 0x7700, 0))
>
>
> I've added the code below to try to call playcsd (with self.p == True) 
> when
> the .csd concludes, but it doesn't work. (The code follows immediately 
> after the above snippet, and is loosely adapted from Victor's PlayMIDI 
> activity.) Obviously I'm not working with the timer (from
> csndsugui) correctly. Can someone correct the following? Many thanks.
>
>   self.time = self.w.score_time()
>   self.w.set_timer(100, self.time_callback, self)
>   if self.w.stopcb == True:
>     self.p == True
>     self.playcsd(self.but)
>
> def time_callback(self, data):
>   self.time = self.w.score_time()
>   return True
>
> Art Hunkins
> 


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