Two important fixes:
(1) on a little-endian platform, don't byteswap;
(2) in _patchheader(), there was a missing self._file argument to a
_write_long() call.
diff --git a/Lib/wave.py b/Lib/wave.py
index 35e3b6b..c34830a 100644
--- a/Lib/wave.py
+++ b/Lib/wave.py
@@ -78,6 +78,13 @@
_array_fmts = None, 'b', 'h', None, 'l'
+# Determine endian-ness
+import struct
+if struct.pack("h", 1) == "\000\001":
+ big_endian = 1
+else:
+ big_endian = 0
+
def _read_long(file):
x = 0L
for i in range(4):
@@ -309,7 +316,8 @@
nitems = (self._data_chunk.chunksize - self._data_chunk.size_read) / self._sampwidth
data.fromfile(self._data_chunk.file, nitems)
self._data_chunk.size_read = self._data_chunk.size_read + nitems * self._sampwidth
- data.byteswap()
+ if big_endian:
+ data.byteswap()
data = data.tostring()
else:
data = self._data_chunk.read(nframes * self._framesize)
@@ -482,7 +490,8 @@
if self._sampwidth > 1:
import array
data = array.array(_array_fmts[self._sampwidth], data)
- data.byteswap()
+ if big_endian:
+ data.byteswap()
data.tofile(self._file)
self._datawritten = self._datawritten + len(data) * self._sampwidth
else:
@@ -542,7 +551,7 @@
return
curpos = self._file.tell()
self._file.seek(self._form_length_pos, 0)
- _write_long(36 + self._datawritten)
+ _write_long(self._file, 36 + self._datawritten)
self._file.seek(self._data_length_pos, 0)
_write_long(self._file, self._datawritten)
self._file.seek(curpos, 0)