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Issue #19641: Added the audioop.byteswap() function to convert big-endian

Browse source 
samples to little-endian and vice versa.
This commit is contained in:
Serhiy Storchaka 2013-11-23 22:26:01 +02:00
parent 2b38fc187c
commit 3062c9a6c8
10 changed files with 80 additions and 78 deletions
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18
Lib/test/test_wave.py
View file

@ -1,6 +1,7 @@
from test.support import TESTFN
import unittest
from test import audiotests
from audioop import byteswap
import sys
import wave
@ -46,13 +47,7 @@ class WavePCM16Test(audiotests.AudioWriteTests,
E4B50CEB 63440A5A 08CA0A1F 2BBA0B0B 51460E47 8BCB113C B6F50EEA 44150A59 \
""")
if sys.byteorder != 'big':
frames = audiotests.byteswap2(frames)
if sys.byteorder == 'big':
@unittest.expectedFailure
def test_unseekable_incompleted_write(self):
super().test_unseekable_incompleted_write()
frames = byteswap(frames, 2)
class WavePCM24Test(audiotests.AudioWriteTests,
@ -82,7 +77,7 @@ class WavePCM24Test(audiotests.AudioWriteTests,
51486F0E44E1 8BCC64113B05 B6F4EC0EEB36 4413170A5B48 \
""")
if sys.byteorder != 'big':
frames = audiotests.byteswap3(frames)
frames = byteswap(frames, 3)
class WavePCM32Test(audiotests.AudioWriteTests,
@ -112,12 +107,7 @@ class WavePCM32Test(audiotests.AudioWriteTests,
51486F800E44E190 8BCC6480113B0580 B6F4EC000EEB3630 441317800A5B48A0 \
""")
if sys.byteorder != 'big':
frames = audiotests.byteswap4(frames)
if sys.byteorder == 'big':
@unittest.expectedFailure
def test_unseekable_incompleted_write(self):
super().test_unseekable_incompleted_write()
frames = byteswap(frames, 4)
if __name__ == '__main__':