mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

Renamed test_errors() to test_setparameters() and completely rewrote it

Browse source 
to test the new setparameters() interface.

Modified play_sound_file() to print the elapsed time taken to play the
test sample (to the nearest 0.1 sec).
This commit is contained in:
Greg Ward 2003-05-29 01:27:39 +00:00
parent 080c110172
commit 4f12d4652d
1 changed files with 54 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

84
Lib/test/test_ossaudiodev.py
View file

@ -53,43 +53,67 @@ def play_sound_file(data, rate, ssize, nchannels):
# set parameters based on .au file headers
dsp.setparameters(fmt, nchannels, rate)
t1 = time.time()
print "playing test sound file..."
dsp.write(data)
dsp.flush()
dsp.close()
t2 = time.time()
print "elapsed time: %.1f sec" % (t2-t1)
def test_errors():
def test_setparameters():
dsp = ossaudiodev.open("w")
fmt = ossaudiodev.AFMT_U8
rate = 8000
nchannels = 1
try:
dsp.setparameters(fmt, nchannels, -1)
except ossaudiodev.error, msg:
print msg
try:
dsp.setparameters(fmt, nchannels, rate)
except ossaudiodev.error, msg:
print msg
try:
dsp.setparameters(fmt, 3, rate)
except ossaudiodev.error, msg:
print msg
try:
dsp.setparameters(177, nchannels, rate)
except ossaudiodev.error, msg:
print msg
try:
dsp.setparameters(ossaudiodev.AFMT_U16_LE, nchannels, rate)
except ossaudiodev.error, msg:
print msg
try:
dsp.setparameters(rate, nchannels, fmt)
except ossaudiodev.error, msg:
print msg
# 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_errors()
test_setparameters()
test()