diff options
Diffstat (limited to 'lib/sunaudio.py')
| -rw-r--r-- | lib/sunaudio.py | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/lib/sunaudio.py b/lib/sunaudio.py index ed1b6e4..92a6203 100644 --- a/lib/sunaudio.py +++ b/lib/sunaudio.py @@ -10,45 +10,45 @@ error = 'sunaudio sound header conversion error' # convert a 4-char value to integer def c2i(data): - if type(data) <> type('') or len(data) <> 4: - raise error, 'c2i: bad arg (not string[4])' - bytes = audio.chr2num(data) - for i in (1, 2, 3): - if bytes[i] < 0: - bytes[i] = bytes[i] + 256 - return ((bytes[0]*256 + bytes[1])*256 + bytes[2])*256 + bytes[3] + if type(data) <> type('') or len(data) <> 4: + raise error, 'c2i: bad arg (not string[4])' + bytes = audio.chr2num(data) + for i in (1, 2, 3): + if bytes[i] < 0: + bytes[i] = bytes[i] + 256 + return ((bytes[0]*256 + bytes[1])*256 + bytes[2])*256 + bytes[3] # read a sound header from an open file def gethdr(fp): - if fp.read(4) <> MAGIC: - raise error, 'gethdr: bad magic word' - hdr_size = c2i(fp.read(4)) - data_size = c2i(fp.read(4)) - encoding = c2i(fp.read(4)) - sample_rate = c2i(fp.read(4)) - channels = c2i(fp.read(4)) - excess = hdr_size - 24 - if excess < 0: - raise error, 'gethdr: bad hdr_size' - if excess > 0: - info = fp.read(excess) - else: - info = '' - return (data_size, encoding, sample_rate, channels, info) + if fp.read(4) <> MAGIC: + raise error, 'gethdr: bad magic word' + hdr_size = c2i(fp.read(4)) + data_size = c2i(fp.read(4)) + encoding = c2i(fp.read(4)) + sample_rate = c2i(fp.read(4)) + channels = c2i(fp.read(4)) + excess = hdr_size - 24 + if excess < 0: + raise error, 'gethdr: bad hdr_size' + if excess > 0: + info = fp.read(excess) + else: + info = '' + return (data_size, encoding, sample_rate, channels, info) # read and print the sound header of a named file def printhdr(file): - hdr = gethdr(open(file, 'r')) - data_size, encoding, sample_rate, channels, info = hdr - while info[-1:] = '\0': - info = info[:-1] - print 'File name: ', file - print 'Data size: ', data_size - print 'Encoding: ', encoding - print 'Sample rate:', sample_rate - print 'Channels: ', channels - print 'Info: ', `info` + hdr = gethdr(open(file, 'r')) + data_size, encoding, sample_rate, channels, info = hdr + while info[-1:] = '\0': + info = info[:-1] + print 'File name: ', file + print 'Data size: ', data_size + print 'Encoding: ', encoding + print 'Sample rate:', sample_rate + print 'Channels: ', channels + print 'Info: ', `info` |