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#! /usr/bin/env python
# A class to play sounds asynchronously, but not overlapping.
#
# Copyright 2012 by Akkana Peck, http://shallowsky.com.
# Share and enjoy under the GPLv2 or (at your option) any later version.
from __future__ import print_function
import sys
import subprocess
class SoundPlayer :
"""
Play sounds that don't overlap in time.
"""
PLAYER = "/usr/bin/aplay"
def __init__(self) :
self.curpath = None
self.current = None
def __del__(self) :
print("__del__ : Waiting for last play")
self.wait()
def play(self, path) :
if self.current :
if self.current.poll() == None :
# Current process hasn't finished yet. Is this the same sound?
if path == self.curpath :
# A repeat of the currently playing sound.
# Don't play it more than once.
print(path, "is still playing. Not playing again")
return
else :
# Trying to play a different sound.
# Wait on the current sound then play the new one.
print("Different sound; first waiting for", self.curpath)
self.wait()
self.current = None
self.curpath = None
print("Trying to play", path)
self.curpath = path
self.current = subprocess.Popen([ SoundPlayer.PLAYER, '-q', path ] )
def wait(self) :
if self.current and self.current.poll() == None :
self.current.wait()
# To test this class, run this file with a list of paths to sound files,
# and make sure to repeat some of them.
# For instance,
# pyplay.py pop.wav pop.wav pop.wav meow.wav meow.wav pop.wav pop.wav
if __name__ == "__main__" :
if len(sys.argv) < 1 :
print("This test doesn't make much sense without some sound arguments")
sys.exit(1)
player = SoundPlayer()
for arg in sys.argv[1:] :
player.play(arg)
player.wait()