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Closes #16461: Wave library should be able to deal with 4GB wav files, and sample rate of 44100 Hz.

This commit is contained in:
Jesus Cea 2012-11-17 03:41:54 +01:00
parent 103f17ef91
commit e4b863982c
2 changed files with 9 additions and 6 deletions
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12
Lib/wave.py
View File

@ -261,9 +261,9 @@ class Wave_read:
#
def _read_fmt_chunk(self, chunk):
wFormatTag, self._nchannels, self._framerate, dwAvgBytesPerSec, wBlockAlign = struct.unpack_from('<hhllh', chunk.read(14))
wFormatTag, self._nchannels, self._framerate, dwAvgBytesPerSec, wBlockAlign = struct.unpack_from('<HHLLH', chunk.read(14))
if wFormatTag == WAVE_FORMAT_PCM:
sampwidth = struct.unpack_from('<h', chunk.read(2))[0]
sampwidth = struct.unpack_from('<H', chunk.read(2))[0]
self._sampwidth = (sampwidth + 7) // 8
else:
raise Error('unknown format: %r' % (wFormatTag,))
@ -466,14 +466,14 @@ class Wave_write:
self._nframes = initlength // (self._nchannels * self._sampwidth)
self._datalength = self._nframes * self._nchannels * self._sampwidth
self._form_length_pos = self._file.tell()
self._file.write(struct.pack('<l4s4slhhllhh4s',
self._file.write(struct.pack('<L4s4sLHHLLHH4s',
36 + self._datalength, b'WAVE', b'fmt ', 16,
WAVE_FORMAT_PCM, self._nchannels, self._framerate,
self._nchannels * self._framerate * self._sampwidth,
self._nchannels * self._sampwidth,
self._sampwidth * 8, b'data'))
self._data_length_pos = self._file.tell()
self._file.write(struct.pack('<l', self._datalength))
self._file.write(struct.pack('<L', self._datalength))
self._headerwritten = True
def _patchheader(self):
@ -482,9 +482,9 @@ class Wave_write:
return
curpos = self._file.tell()
self._file.seek(self._form_length_pos, 0)
self._file.write(struct.pack('<l', 36 + self._datawritten))
self._file.write(struct.pack('<L', 36 + self._datawritten))
self._file.seek(self._data_length_pos, 0)
self._file.write(struct.pack('<l', self._datawritten))
self._file.write(struct.pack('<L', self._datawritten))
self._file.seek(curpos, 0)
self._datalength = self._datawritten

3
Misc/NEWS
View File

@ -222,6 +222,9 @@ Library
- Issue #16270: urllib may hang when used for retrieving files via FTP by using
a context manager. Patch by Giampaolo Rodola'.
- Issue #16461: Wave library should be able to deal with 4GB wav files,
and sample rate of 44100 Hz.
- Issue #16176: Properly identify Windows 8 via platform.platform()
- Issue #16114: The subprocess module no longer provides a misleading