sndhdr
— 确定声音文件类型
¶
源代码： Lib/sndhdr.py
sndhdr
provides utility functions which attempt to determine the type of sound data which is in a file. When these functions are able to determine what type of sound data is stored in a file, they return a
namedtuple()
, containing five attributes: (
filetype
,
framerate
,
nchannels
,
nframes
,
sampwidth
). The value for
type
indicates the data type and will be one of the strings
'aifc'
,
'aiff'
,
'au'
,
'hcom'
,
'sndr'
,
'sndt'
,
'voc'
,
'wav'
,
'8svx'
,
'sb'
,
'ub'
，或
'ul'
。
sampling_rate
will be either the actual value or
0
if unknown or difficult to decode. Similarly,
channels
will be either the number of channels or
0
if it cannot be determined or if the value is difficult to decode. The value for
frames
will be either the number of frames or
-1
. The last item in the tuple,
bits_per_sample
, will either be the sample size in bits or
'A'
for A-LAW or
'U'
for u-LAW.
sndhdr.
what
(
filename
)
¶
Determines the type of sound data stored in the file
filename
使用
whathdr()
. If it succeeds, returns a namedtuple as described above, otherwise
None
被返回。
3.5 版改变： Result changed from a tuple to a namedtuple.
sndhdr.
whathdr
(
filename
)
¶
Determines the type of sound data stored in a file based on the file header. The name of the file is given by
filename
. This function returns a namedtuple as described above on success, or
None
.
3.5 版改变： Result changed from a tuple to a namedtuple.