forked from auracaster/pyalsaaudio
64 lines
1.5 KiB
Python
Executable File
64 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python
|
|
|
|
# Simple test script that plays (some) wav files
|
|
|
|
from __future__ import print_function
|
|
|
|
import sys
|
|
import wave
|
|
import getopt
|
|
import alsaaudio
|
|
|
|
def play(device, f):
|
|
|
|
print('%d channels, %d sampling rate\n' % (f.getnchannels(),
|
|
f.getframerate()))
|
|
# Set attributes
|
|
device.setchannels(f.getnchannels())
|
|
device.setrate(f.getframerate())
|
|
|
|
# 8bit is unsigned in wav files
|
|
if f.getsampwidth() == 1:
|
|
device.setformat(alsaaudio.PCM_FORMAT_U8)
|
|
# Otherwise we assume signed data, little endian
|
|
elif f.getsampwidth() == 2:
|
|
device.setformat(alsaaudio.PCM_FORMAT_S16_LE)
|
|
elif f.getsampwidth() == 3:
|
|
device.setformat(alsaaudio.PCM_FORMAT_S24_LE)
|
|
elif f.getsampwidth() == 4:
|
|
device.setformat(alsaaudio.PCM_FORMAT_S32_LE)
|
|
else:
|
|
raise ValueError('Unsupported format')
|
|
|
|
device.setperiodsize(320)
|
|
|
|
data = f.readframes(320)
|
|
while data:
|
|
# Read data from stdin
|
|
device.write(data)
|
|
data = f.readframes(320)
|
|
|
|
|
|
def usage():
|
|
print('usage: playwav.py [-d <device>] <file>', file=sys.stderr)
|
|
sys.exit(2)
|
|
|
|
if __name__ == '__main__':
|
|
|
|
device = 'default'
|
|
|
|
opts, args = getopt.getopt(sys.argv[1:], 'd:')
|
|
for o, a in opts:
|
|
if o == '-d':
|
|
device = a
|
|
|
|
if not args:
|
|
usage()
|
|
|
|
f = wave.open(args[0], 'rb')
|
|
device = alsaaudio.PCM(device=device)
|
|
|
|
play(device, f)
|
|
|
|
f.close()
|