diff options
Diffstat (limited to 'Lib/sndhdr.py')
| -rw-r--r-- | Lib/sndhdr.py | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/Lib/sndhdr.py b/Lib/sndhdr.py index 9f5dcc9..240e507 100644 --- a/Lib/sndhdr.py +++ b/Lib/sndhdr.py @@ -11,7 +11,7 @@ The return tuple contains the following items, in this order: - number of bits/sample, or 'U' for U-LAW, or 'A' for A-LAW If the file doesn't have a recognizable type, it returns None. -If the file can't be opened, IOError is raised. +If the file can't be opened, OSError is raised. To compute the total time, divide the number of frames by the sampling rate (a frame contains a sample for each channel). @@ -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) @@ -230,7 +233,7 @@ def testall(list, recursive, toplevel): sys.stdout.flush() try: print(what(filename)) - except IOError: + except OSError: print('*** not found ***') if __name__ == '__main__': |