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#!/usr/bin/env python

"""PyAudio Example: Play a wave file (callback version)"""

import pyaudio

import wave

import time

import sys

if len(sys.argv) < 2:

print("Plays a wave file.\n\nUsage: %s filename.wav" % sys.argv[0])

sys.exit(-1)

wf = wave.open(sys.argv[1], 'rb')

p = pyaudio.PyAudio()

def callback(in_data, frame_count, time_info, status):

data = wf.readframes(frame_count)

return (data, pyaudio.paContinue)

stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),

channels=wf.getnchannels(),

rate=wf.getframerate(),

output=True,

stream_callback=callback)

stream.start_stream()

while stream.is_active():

time.sleep(0.1)

stream.stop_stream()

stream.close()

wf.close()

p.terminate()