David Jones <d...@pobox.com> added the comment:
The following program does a very basic do-i-get-back-what-i-wrote test.
sunau can't cope; I am investigating.
#!/usr/bin/env python
# $Id$
# Audio File Tests
import aifc
import sunau
import wave
import struct
import sys
from StringIO import StringIO
frames = struct.pack('256B', *range(256))
log = sys.stderr
# Basic test of reproducability.
# We test that a set of frames (an entirely artifical set, see `frames`,
# above) can be written to an audio file and read back again to get the
# same set of frames.
# We test mono/stereo, 8-bit/16-bit, and a few framerates.
# As of 2009-02-12 sunau does not pass these tests, so I recommend that
# you remove it.
for af in (aifc, sunau, wave):
for nchannels in (1, 2):
for sampwidth in (1, 2):
for framerate in (11000, 44100, 96000):
print >> log, "%s %d/%d/%d" % (af.__name__,
nchannels, sampwidth, framerate)
f = StringIO()
w = af.open(f, 'w')
w.setnchannels(nchannels)
w.setsampwidth(sampwidth)
w.setframerate(framerate)
w.writeframesraw(frames)
w.close()
s = f.getvalue()
f = StringIO(s)
w = af.open(f)
assert w.getnchannels() == nchannels
assert w.getsampwidth() == sampwidth
assert w.getframerate() == framerate
assert w.readframes(len(frames)//nchannels//sampwidth) == frames
assert w.readframes(1) == ''
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue5202>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
