Renamed test_errors() to test_setparameters() and completely rewrote it
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).
diff --git a/Lib/test/test_ossaudiodev.py b/Lib/test/test_ossaudiodev.py
index 6bc5923..729f6ea 100644
--- a/Lib/test/test_ossaudiodev.py
+++ b/Lib/test/test_ossaudiodev.py
@@ -53,43 +53,67 @@
# 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()