mirror of https://github.com/python/cpython
125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
from test import test_support
|
|
test_support.requires('audio')
|
|
|
|
from test.test_support import verbose, findfile, TestFailed, TestSkipped
|
|
|
|
import errno
|
|
import fcntl
|
|
import ossaudiodev
|
|
import os
|
|
import sys
|
|
import select
|
|
import sunaudio
|
|
import time
|
|
import audioop
|
|
|
|
# Arggh, AFMT_S16_NE not defined on all platforms -- seems to be a
|
|
# fairly recent addition to OSS.
|
|
try:
|
|
from ossaudiodev import AFMT_S16_NE
|
|
except ImportError:
|
|
if sys.byteorder == "little":
|
|
AFMT_S16_NE = ossaudiodev.AFMT_S16_LE
|
|
else:
|
|
AFMT_S16_NE = ossaudiodev.AFMT_S16_BE
|
|
|
|
|
|
SND_FORMAT_MULAW_8 = 1
|
|
|
|
def read_sound_file(path):
|
|
fp = open(path, 'rb')
|
|
size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)
|
|
data = fp.read()
|
|
fp.close()
|
|
|
|
if enc != SND_FORMAT_MULAW_8:
|
|
print "Expect .au file with 8-bit mu-law samples"
|
|
return
|
|
|
|
# Convert the data to 16-bit signed.
|
|
data = audioop.ulaw2lin(data, 2)
|
|
return (data, rate, 16, nchannels)
|
|
|
|
|
|
def play_sound_file(data, rate, ssize, nchannels):
|
|
try:
|
|
dsp = ossaudiodev.open('w')
|
|
except IOError, msg:
|
|
if msg[0] in (errno.EACCES, errno.ENODEV, errno.EBUSY):
|
|
raise TestSkipped, msg
|
|
raise TestFailed, msg
|
|
|
|
# at least check that these methods can be invoked
|
|
dsp.bufsize()
|
|
dsp.obufcount()
|
|
dsp.obuffree()
|
|
dsp.getptr()
|
|
dsp.fileno()
|
|
|
|
# set parameters based on .au file headers
|
|
dsp.setparameters(AFMT_S16_NE, nchannels, rate)
|
|
t1 = time.time()
|
|
print "playing test sound file..."
|
|
dsp.write(data)
|
|
dsp.close()
|
|
t2 = time.time()
|
|
print "elapsed time: %.1f sec" % (t2-t1)
|
|
|
|
def test_setparameters():
|
|
dsp = ossaudiodev.open("w")
|
|
|
|
# Two configurations for testing:
|
|
# config1 (8-bit, mono, 8 kHz) should work on even the most
|
|
# ancient and crufty sound card, but maybe not on special-
|
|
# purpose high-end hardware
|
|
# config2 (16-bit, stereo, 44.1kHz) should work on all but the
|
|
# most ancient and crufty hardware
|
|
config1 = (ossaudiodev.AFMT_U8, 1, 8000)
|
|
config2 = (ossaudiodev.AFMT_S16_NE, 2, 44100)
|
|
|
|
for config in [config1, config2]:
|
|
(fmt, channels, rate) = config
|
|
if (dsp.setfmt(fmt) == fmt and
|
|
dsp.channels(channels) == channels and
|
|
dsp.speed(rate) == rate):
|
|
break
|
|
else:
|
|
raise RuntimeError("unable to set audio sampling parameters: "
|
|
"you must have really weird audio hardware")
|
|
|
|
# setparameters() should be able to set this configuration in
|
|
# either strict or non-strict mode.
|
|
result = dsp.setparameters(fmt, channels, rate, False)
|
|
assert result == (fmt, channels, rate), \
|
|
"setparameters%r: returned %r" % (config + result)
|
|
result = dsp.setparameters(fmt, channels, rate, True)
|
|
assert result == (fmt, channels, rate), \
|
|
"setparameters%r: returned %r" % (config + result)
|
|
|
|
# Now try some configurations that are presumably bogus: eg. 300
|
|
# channels currently exceeds even Hollywood's ambitions, and
|
|
# negative sampling rate is utter nonsense. setparameters() should
|
|
# accept these in non-strict mode, returning something other than
|
|
# was requested, but should barf in strict mode.
|
|
for config in [(fmt, 300, rate), # ridiculous nchannels
|
|
(fmt, -5, rate), # impossible nchannels
|
|
(fmt, channels, -50), # impossible rate
|
|
]:
|
|
(fmt, channels, rate) = config
|
|
result = dsp.setparameters(fmt, channels, rate, False)
|
|
assert result != config, \
|
|
"setparameters: unexpectedly got requested configuration"
|
|
|
|
try:
|
|
result = dsp.setparameters(fmt, channels, rate, True)
|
|
raise AssertionError("setparameters: expected OSSAudioError")
|
|
except ossaudiodev.OSSAudioError, err:
|
|
print "setparameters: got OSSAudioError as expected"
|
|
|
|
def test():
|
|
(data, rate, ssize, nchannels) = read_sound_file(findfile('audiotest.au'))
|
|
play_sound_file(data, rate, ssize, nchannels)
|
|
test_setparameters()
|
|
|
|
test()
|