Re: [pygame] Re: Check Sound status in Pygame

[Lenard Lindstrom <len-l@xxxxxxxxx>]

It seems you need to do your own channel management. It is easiest show 
with a code sample. Note this is untested.

#  A queue of channels from oldest to newest
channel_queue = []

def play_sound(sound):
   """Play a sound

   If all channels are busy then reuse the channel that was playing the 
longest.
   """

   for i, c in enumerate(channel_queue):
       if not c.get_busy():
           channel = channel_queue.pop(i)
           break
   else:
       if len(channel_queue) < pygame.mixer.get_num_channels():
           channel = Channel(len(channel_queue))
       else:
           channel = channel_queue.pop(0)
   channel.play(sound)
   channel_queue.append(channel)


Lenard

Wyatt Olson wrote:
> OK, I found the method get_num_channels which seems to do this.  
> However, I now need to be able to stop playing oldest sounds if I 
> wish, to clear out space for other ones.  For instance, assume that I 
> have 16 channels defined.  I am trying to play 30 notes on the ride 
> cymbal in a 5 second interval.  The ride cymbal sample is 10 seconds 
> long.  Without stopping sounds, once I play the sample 16 times, I 
> cannot play any more until one of the samples finished playing.  What 
> I would like to do is check how many samples are playing, and if the 
> count is greater than some threshold, stop the oldest instance of the 
> playing sound.  I can't seem to find any way to stop a single 
> *instance* of a sound - if you call stop() or fadeout(), all instances 
> of the sound will be stopped.  I realize that this requirement is a 
> bit more unique for my application, but I imagine that manipulating 
> individual instances of existing sounds can be useful to anyone.
>
> Please let me know if I am missing something else which should be 
> obvious to me.
>
> Cheers
>
> Wyatt Olson wrote:
> > Hello all,
> >
> > I am developing a drum sequencer program using Pygame, and have a 
> > (hopefully easy) architectural question for you.  How can you tell if 
> > a Sound object is currently playing? (On any channel - I don't care 
> > where it is playing, I just want to know if it is).  There is no 
> > 'is_playing()' or similar method which I could find.  I imagine that 
> > this is a pretty common request, so I must be just missing something.
> >
> > Thanks!