How to play sound in Python WITHOUT interrupting music/other sounds from playing
- by Morlock
I'm working on a timer in python which sounds a chime when the waiting time is over. I use the following code:
from wave import open as wave_open
from ossaudiodev import open as oss_open
def _play_chime():
"""
Play a sound file once.
"""
sound_file = wave_open('chime.wav','rb')
(nc,sw,fr,nf,comptype, compname) = sound_file.getparams( )
dsp = oss_open('/dev/dsp','w')
try:
from ossaudiodev import AFMT_S16_NE
except ImportError:
if byteorder == "little":
AFMT_S16_NE = ossaudiodev.AFMT_S16_LE
else:
AFMT_S16_NE = ossaudiodev.AFMT_S16_BE
dsp.setparameters(AFMT_S16_NE, nc, fr)
data = sound_file.readframes(nf)
sound_file.close()
dsp.write(data)
dsp.close()
It works pretty good, unless any other device is already outputing sound.
How could I do basically the same (under linux) without having the prerequisite that no sound is being played?
If you think the process would require an API to ensure software mixing, please suggest a method :)
Thx for the support
