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Created on 2013-11-17 22:26 by vstinner, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| wave_byteswap.patch | serhiy.storchaka, 2013-11-17 23:12 | review | ||
| wave_byteswap_2.patch | serhiy.storchaka, 2013-11-18 08:15 | review | ||
| Messages (11) | |||
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| msg203217 - (view) | Author: STINNER Victor (vstinner) *  |
Date: 2013-11-17 22:26 | |
Some test_wave are failing, but only on PPC64 (big endian, right?). It may be related to issue #1575020. http://buildbot.python.org/all/builders/PPC64%20PowerLinux%203.x/builds/1099/steps/test/logs/stdio ====================================================================== ERROR: test_unseekable_incompleted_write (test.test_wave.WavePCM16Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 243, in test_unseekable_incompleted_write self.check_file(testfile, self.nframes + 1, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 84, in check_file self.assertEqual(f.readframes(nframes), frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/wave.py", line 257, in readframes data.fromfile(chunk.file.file, nitems) EOFError: read() didn't return enough bytes ====================================================================== ERROR: test_unseekable_incompleted_write (test.test_wave.WavePCM32Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 243, in test_unseekable_incompleted_write self.check_file(testfile, self.nframes + 1, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 84, in check_file self.assertEqual(f.readframes(nframes), frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/wave.py", line 257, in readframes data.fromfile(chunk.file.file, nitems) EOFError: read() didn't return enough bytes ====================================================================== FAIL: test_write_array (test.test_wave.WavePCM16Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 163, in test_write_array self.check_file(TESTFN, self.nframes, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 83, in check_file self.assertEqual(f.getnframes(), nframes) AssertionError: 96 != 48 ====================================================================== FAIL: test_write_memoryview (test.test_wave.WavePCM16Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 171, in test_write_memoryview self.check_file(TESTFN, self.nframes, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 83, in check_file self.assertEqual(f.getnframes(), nframes) AssertionError: 96 != 48 ====================================================================== FAIL: test_write_array (test.test_wave.WavePCM32Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 163, in test_write_array self.check_file(TESTFN, self.nframes, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 83, in check_file self.assertEqual(f.getnframes(), nframes) AssertionError: 192 != 48 ====================================================================== FAIL: test_write_memoryview (test.test_wave.WavePCM32Test) ---------------------------------------------------------------------- Traceback (most recent call last): File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 171, in test_write_memoryview self.check_file(TESTFN, self.nframes, self.frames) File "/home/shager/cpython-buildarea/3.x.edelsohn-powerlinux-ppc64/build/Lib/test/audiotests.py", line 83, in check_file self.assertEqual(f.getnframes(), nframes) AssertionError: 192 != 48 |
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| msg203227 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-11-17 23:12 | |
Thank you for your report. This patch should fix the issue. |
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| msg203229 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-11-17 23:21 | |
- a = array.array('h', data)
+ a = array.array('h')
+ a.frombytes(data)
I don't understand why it would change anything. According to the doc, passing data to the construction is like calling array.frombytes():
http://docs.python.org/dev/library/array.html#array.array
If it behaves differently, it looks like a bug a in the array module. Am I wrong?
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| msg203251 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-11-18 08:15 | |
array's constructor interprets its second memoryview argument as an iterable of integers.
>>> import array
>>> array.array('h', b'abcd')
array('h', [25185, 25699])
>>> array.array('h', memoryview(b'abcd'))
array('h', [97, 98, 99, 100])
array.frombytes() always interpret its argument as bytes-like object.
>>> a = array.array('h')
>>> a.frombytes(memoryview(b'abcd'))
>>> a
array('h', [25185, 25699])
First patch fixes only a half of the issue. test_unseekable_incompleted_write() still failed because array.fromfile() fails read incomplete data. Second patch also adds unittest.expectedFailure decorators for these tests.
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| msg203252 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-11-18 08:25 | |
> array's constructor interprets its second memoryview argument as an iterable of integers. Ok so, so your fix is correct. > First patch fixes only a half of the issue. test_unseekable_incompleted_write() still failed because array.fromfile() fails read incomplete data. Why the test succeeded on little endian? |
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| msg203254 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-11-18 08:30 | |
> Why the test succeeded on little endian? Because array.fromfile() is used only to swap 16- and 32-bit samples on bigendian platform. Perhaps we need the byteswap() function in the audioop module. |
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| msg203257 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-11-18 08:38 | |
> Because array.fromfile() is used only to swap 16- and 32-bit samples on bigendian platform. If the file is truncated, why would the test suceed on little endian? The file doesn't have the same size in bytes? The test doesn't check the number of frames? |
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| msg203272 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-11-18 10:05 | |
> If the file is truncated, why would the test suceed on little endian? The > file doesn't have the same size in bytes? The test doesn't check the number > of frames? Because this code is not used on little endian. On little endian a data is read by file's read() method. |
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| msg203444 - (view) | Author: David Edelsohn (David.Edelsohn) * | Date: 2013-11-19 23:44 | |
By the way, test_wave also fails on zLinux, which also is Big Endian. |
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| msg203590 - (view) | Author: Roundup Robot (python-dev)  |
Date: 2013-11-21 09:05 | |
New changeset 7b040bc289e8 by Serhiy Storchaka in branch '3.3': Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on http://hg.python.org/cpython/rev/7b040bc289e8 New changeset 7cf7f19445ba by Serhiy Storchaka in branch 'default': Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on http://hg.python.org/cpython/rev/7cf7f19445ba New changeset 03a32ead9c7d by Serhiy Storchaka in branch '2.7': Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on http://hg.python.org/cpython/rev/03a32ead9c7d |
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| msg203638 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-11-21 15:21 | |
"PPC64 PowerLinux 3.x" buildbot is green again! I'm closing the issue. I didn't check 2.7 and 3.3 buildbots. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:53 | admin | set | github: 63832 |
| 2013-11-21 15:21:08 | vstinner | set | status: open -> closed resolution: fixed messages: + msg203638 |
| 2013-11-21 09:05:19 | python-dev | set | nosy:
+ python-dev messages: + msg203590 |
| 2013-11-19 23:44:51 | David.Edelsohn | set | messages: + msg203444 |
| 2013-11-18 10:05:23 | serhiy.storchaka | set | messages: + msg203272 |
| 2013-11-18 08:38:15 | vstinner | set | messages: + msg203257 |
| 2013-11-18 08:30:08 | serhiy.storchaka | set | messages: + msg203254 |
| 2013-11-18 08:25:00 | vstinner | set | messages: + msg203252 |
| 2013-11-18 08:15:57 | serhiy.storchaka | set | files:
+ wave_byteswap_2.patch messages: + msg203251 |
| 2013-11-18 04:29:29 | David.Edelsohn | set | nosy:
+ David.Edelsohn |
| 2013-11-17 23:21:01 | vstinner | set | messages: + msg203229 |
| 2013-11-17 23:12:55 | serhiy.storchaka | set | files:
+ wave_byteswap.patch messages: + msg203227 components: + Library (Lib), - Tests keywords: + patch type: behavior stage: patch review |
| 2013-11-17 22:26:57 | vstinner | create | |