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#5024: whichhdr now returns the frame count for WAV files.

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Patch by Ned Jackson Lovely based on a suggestion by Robert Pyle.
This commit is contained in:
R David Murray 2013-03-18 17:42:42 -04:00
parent 052ddb01b3
commit 1a48b9dd7d
4 changed files with 13 additions and 6 deletions
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13
Lib/sndhdr.py
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@ -137,14 +137,17 @@ tests.append(test_voc)
def test_wav(h, f):
import wave
# 'RIFF' <len> 'WAVE' 'fmt ' <len>
if not h.startswith(b'RIFF') or h[8:12] != b'WAVE' or h[12:16] != b'fmt ':
return None
style = get_short_le(h[20:22])
nchannels = get_short_le(h[22:24])
rate = get_long_le(h[24:28])
sample_bits = get_short_le(h[34:36])
return 'wav', rate, nchannels, -1, sample_bits
f.seek(0)
try:
w = wave.openfp(f, 'r')
except (EOFError, wave.Error):
return None
return ('wav', w.getframerate(), w.getnchannels(),
w.getnframes(), 8*w.getsampwidth())
tests.append(test_wav)